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2017

19608680Messaging devices and methods
29576445Systems and methods for generating haptic effects associated with an envelope in audio signals
39569957Systems, devices and methods involving device identification
49569648Apparatus and methods for wireless communication using load modulation
59565026System and method for providing location based services using collaborative networks
69553992Automated emergency notification system

2016

79497704Method for scheduling wake/sleep cycles by a central device in a wireless network
89443402Vibratory alert device
99342967Motion activated off grid LED light
109247620Controlling light source(s) via a portable device

2015

119226365Lighting system
129215556System and method for determining the location of wireless sensors
139214094Methods and apparatuses for emergency notifications to the hearing impaired
149210365Methods, computer program products, and systems for providing automated video tracking via a radio frequency identification
159209988Hardware-based beacon processing
169209628Systems and methods for de-energizing battery packs
179180819Interior rearview mirror assembly with integrated indicator symbol
189177243Passive RFID transponder with powered element
199176494System and method of communication for electronic apparatuses
209155221Digital subscriber line access multiplexer enclosures having onboard power
219112957Adapting portable electrical devices to receive power wirelessly
229112707System and method for providing location based services using collaborative networks
239112579Switching VSAT transmitter with smart stand-by mode
249111427Chamber condition
259104927Using a RFID paging infrastructure
269087038Messaging with shortcut character strings
279082026Wireless tag communication device, information processing apparatus, and recording medium
289078152Programmable communicator
299070062Streamlined apparatus and methods for RFID communication
309041531Identifying the presence of an individual near medical radiation emitting equipment
319030321Cargo theft prevention using text messaging
329024748PASS-Tracker: apparatus and method for identifying and locating distressed firefighters
339007212Using a RFID paging infrastructure
349002264Antenna structure for a near-field communication device
358965299Method and system for the processing control of multiple radio frequency communication streams by an integrated circuit card
368955022Securing property
378933786RFID tag device and method of recognizing the same

2014

388922338Power management in an electromagnetic transponder
398890680Alternative billing modes for security and automation applications
408890656Mobile panic button for health monitoring system
418886759System and method for interactive marketing
428872625Bridge between security system and appliances
438872624Programmable communicator
448866589Programmable communicator
458847764RFID system with distributed read structure
468847751Line status detection apparatus, communication apparatus, and line status detection method
478841989Messaging devices and methods
488836479Alerting system using distributed notification delivery
498830033Active EMI shielding for protection of medical instruments
508816855Methods, computer program products, and systems for providing automated video tracking via radio frequency identification
518812007Control method of wireless irrigation
528810408Medication management and reporting technology
538792852Method for informing multiple mobile terminals of an emergency event
548774863Apparatus and method for controlling built-in microphone of portable terminal
558749349Method apparatus and computer program
568749348Sensor device with persistent low power beacon
578742893Filtered in-box for voice mail, e-mail, pages, web-based information, and faxes
588723667System, device and method for managing a power distribution network
598704654Circuit for communication over DC power line using high temperature electronics
608686833Control system including electronic control apparatus and sensor apparatuses bus-connected to electronic control apparatus
618659392System and method for determining the location of wireless sensors
628653943Radio frequency identification system provided for access control
638648717Programmable communicator
648648712Electronic emergency messaging system
658633802Programmable communicator
668629758System and method for transmitting messages received from a paging network on a paging device to electronic devices

2013

678620312Combined background and 20/40 coexistence scan
688618957Power management system and method for vehicle locating unit
698577395Apparatus, and associated method, for paging a mobile station utilizing an enhanced mobile-terminated connection setup
708564453Indicating errors in connection with devices
718564407Universal infrared receiving apparatus and associated method
728564406Pager with a touch-sensitive display screen and method for transmitting a message therefrom
738560024Adapting portable electrical devices to receive power wirelessly
748554386System and method for self-powered communications networks
758552853Networked power and communication receptacle devices
768543251Centralized fine grade control of device energy consumption
778542111Programmable communicator
788536998Integrated adaptive wireless mesh sensor platform and energy visualization and management system
798531286System and method for monitoring security at a premises using line card with secondary communications channel
808527018Method and apparatus for reducing power consumption in mobile terminal
818525664System and method for minimizing the amount of data being sent on a network for supervised security systems
828519843Power distribution device communications platform
838508330Adaptive filter for lighting assembly control signals
848503659Method and apparatus for ringback tone replacement with downloaded audio files
858466789Method for theft recognition on a photovoltaic unit and inverter for a photovoltaic unit
868451091Control system, electronic control unit, and communication method
878421614Reliable redundant data communication through alternating current power distribution system
888384518Illuminable latch
898378809Network with switching control unit for disconnecting terminals from network voltage
908374729Smart electrical outlets and associated networks
918373557Method for establishing a telecommunications network for patient monitoring
928368527Electronic device controlling system and control signal transmitting device
938362899Initiating emergency communication in response to detecting bio-feedback satisfying an alert condition
948354918Light, sound, and motion receiver devices
958350671Method and apparatus for controlling new message alert in portable wireless terminal
968344852Method and system for transmitting a plurality of notifications in a notification pool

2012

978299897Information processing apparatus, method, and program
988285345Mobile terminal and method for switching states thereof
998280453Adapting portable electrical devices to receive power wirelessly
1008264344Remote surveillance and intervention using wireless phone
1018258923System and method for locating objects and communicating with the same
1028238868Dynamic voltage scaling for packet-based data communication systems
1038208973System and method for variable beacon timing with wireless devices
1048203445Wireless lighting
1058194719Method and apparatus for maximizing standby time in remote stations configured to receive broadcast databurst messages
1068194550Trust-based methodology for securing vehicle-to-vehicle communications
1078193929Integrated adaptive wireless mesh sensor platform and energy visualization and management system
1088193908Pager with a touch-sensitive display screen and method for transmitting a message therefrom
1098188868Systems for activating and/or authenticating electronic devices for operation with apparel
1108183984Method and device for the power-saving operation of a plurality of RFID data carriers
1118180463Method and apparatus for a computerized integrated power bus
1128174379Networked power and communication receptacle devices
1138164421Adaptive remote verification of vehicular functions
1148149106Apparatus and method for data communication over power lines
1158145279Method of supporting operation of sleep mode in a wideband radio access system
1168138910Uninterruptible power supply unit
1178134450Content provision to subscribers via wireless transmission
1188098132Call receiving system and apparatus for selective reception of caller communication
1198094010Programmable communicator

2011

1208081066Damage-resistant vibrator assemblies and wireless communications devices incorporating same
1218072323Power-line carrier communication apparatus
1228063768Modem apparatus
1238063766Emergency alert information based upon subscriber location
1248055310Adapting portable electrical devices to receive power wirelessly
1258044772Expert system assistance for persons in danger
1268040235Relay apparatus and electric appliance
1278036703Image capture reporting based on content-associated wireless identification
1288035507Method and apparatus for stimulating power line carrier injection with reactive oscillation
1298035481Illuminable latch
1308031049Method of communicating a command for load shedding of a load control system
1318018331Multilevel inverter using cascade configuration and control method thereof
1328014798High-capacity paging method, and associated apparatus, with further reduced probability of false page match
1337999668Series interlock system with integrated ability to identify breached locations
1347995998Wireless device with integrated emergency alert notification
1357994908Vehicle and information apparatus of vehicle
1367992026Controlling broadcast content processing using display state information
1377965992Method and system for broadcasting data messages to a vehicle
1387956723Digital communication system with security features
1397956722System and method for providing user-selected information to a paging-capable device
1407953012Monitoring arrangements, having communication establishment information changed from initial communication establishment information
1417925290System and method for efficiently providing high-performance dispatch services in a wireless system
1427915997System and method for remote activation with interleaved modulation protocol
1437913246System and method for updating a software program
1447907050Power supply communication system and method
1457904122Method of supporting operation of sleep mode in a wideband radio access system
1467903598Apparatus and method for downstream power management in a cable system
1477898406Powered device with priority indicator
1487880584Lockbox key with callback feature
1497876699Mobile station and method for verifying access points thereof

2010

1507843314Paging transceivers and methods for selectively retrieving messages
1517822059Managing contention-free time allocations in a network
1527812717Situational network
1537800491Power-line carrier communication apparatus
1547796025Power line communication device and method
1557791468Power line communication system having time server
1567769415System and method for activating a communication device based on usage information
1577768390Method for transmitting sensor data in sensor network including pair node
1587768389Wireless user input device providing host link indication
1597767893Method of operating one or more individual entertainment display devices supported by spectators at a spectator event and an individual entertainment display device therefor
1607760072System and method for providing user-selected information to a paging-capable device
1617737838Method and apparatus for transmission of wireless signals in a mobile platform
1627728712Digital communication system with security features
1637701342Navigation system using RFID tags and method
1647688195Bridge system for installing electronic appliance to light source socket and bridge method thereof
1657683777Method and system for audio distribution in installations where the use of existing wiring is preferred
1667656289Apparatus for monitoring an inside of a manhole
1677652568Tracking of containers
1687648077HVAC communication system
1697643788Method and system for broadcasting data messages to a vehicle

2009

1707626497Power line communication vegetation management system and method
1717626493Methods, systems, and products for interfacing with powerline networks
1727617343Scalable bus structure
1737562177Signal protocol assembly
1747551076Object locator feature as part of a security system
1757551074Method and arrangement for monitoring a transmission medium
1767535350Broadcast receiver receiving emergency alert signal and method of processing the emergency alert signal
1777529644Method of diagnosing an operations systems
1787518999Monitoring arrangements, having communication establishment information changed from initial communication establishment information
1797518486Method for locking an electrical device to a given locale
1807515699Call handling using non-speech cues via a personal assistant
1817511603Filtered in-box for voice mail, e-mail, pages, web-based information, and faxes
1827501953RFID readers transmitting preambles denoting communication parameters and RFID tags interpreting the same and methods
1837479624Laser light actuation system
1847477887Tag reader maintaining sensitivity with adjustable tag interrogation power level
1857474887Method and system for reducing battery consumption in wireless transmit/receive units (WTRUs) employed in a wireless local area network/wireless wide area network (WLAN/WWAN)

2008

1867466225Power line communication system and method of operating the same
1877460934Power line communication system
1887450001Power line communications system and method
1897397345Method and vehicle for sending electronic advertisements
1907382227Portable computer supporting paging instructions
1917352282Communication system
1927350060Method and apparatus for sending thread-execution-state-sensitive supervisory commands to a simultaneous multi-threaded (SMT) processor
1937319384Communication apparatus and communication method

2007

1947308269Push content filtering for short range communication
1957307519Communication system and PLC network
1967266591Providing content delivery during a call hold condition
1977265664Power line communications system and method
1987262694Multifunctional, intelligent power and communication device
1997259666Method and system for displaying status indications from communications network
2007243149System and method for determining a presence state of a user
2017242308Bed status information system for hospital beds
2027227462Extremely fast polling method for determining the presence of individual electric meters on a power line
2037218242Communication system and method including communication channel mobility
2047203463Power efficient channel scheduling in a wireless network
2057183898Coupling wireless portable communications device to a base station by a second network when out of communication with a first network
2067180427Information system
2077167079Method of setting the output power of a pager to aid in the installation of a wireless system
2087158010Circuit arrangement and method for phase modulation in a backscattering transponder

2006

2097088232System and method for reducing radiation when distributing broadband communication signals over power lines
2107053753Wireless community alerting system
2117047049Radio communications device including at least one light source
2127015808Method and system for remote monitoring of processing status in computer-aided detection systems
2137005963Call receiving method and apparatus having two-way text messaging and automatic retrieval of call numbers making calls to apparatus

2005

2146952751Method and apparatus for extending legacy computer systems
2156925174Interaction between echo canceller and packet voice processing
2166917280Cradle for accepting portable communications device and coupling portable communications device to first network by way of second network
2176900726System and method for fiber optic communication with safety-related alarm systems
2186900720Vending machines with field-programmable locks
2196888925Method for testing large-scale audio conference servers
2206882716Local control of call features in a telephone system
2216879819Control and messaging during emergency calls
2226868142Voice-operated interface for DTMF-controlled systems
2236868116Universal telephony tones detector
2246850616Frequency error detection methods and systems using the same
2256847608Path management and test method for switching system
2266839412Audio file transmission method

2004

2276813529Method and apparatus for signal frequency decoding without an analog bandpass filter
2286801622Devices, software and methods for passing DTMF signals under voice compression
2296795533Intermediate voice and DTMF detector device for improved speech recognition utilization and penetration
2306792093System and method for telephone call recording and recorded call retrieval
2316782095Method and apparatus for performing spectral processing in tone detection
2326778641Telephone independent provision of speech recognition during dial tone and subsequent call progress states
2336771641DTMF digit collection and transportation for a packet network
2346765996Audio file transmission method
2356748059Apparatus and method for unified tone detection
2366728369Method and device for distinguishing among a plurality of devices and data elements with a sequence of signals
2376711540Tone detector with noise detection and dynamic thresholding for robust performance
2386707886Method and system for testing subscriber loops using touchtone telephone signals
2396697476Audio conference platform system and method for broadcasting a real-time audio conference over the internet
2406694015Universal line interface in telecommunications system
2416694011Method and system for reliably detecting voiceband signaling tones
2426687368Tone signal detecting method and tone signal detector
2436683944Voice transmitter
2446683939Method and apparatus for logging DTMF phone symbols dialed from an extension
2456681000Signal converter server network information system control methods thereof and telephone terminal
2466674855High performance multifrequency signal detection

2003

2476671252Robust signaling tone duration measurement
2486668057Apparatus for receiving tone signal, apparatus for transmitting tone signal, and apparatus for transmitting or receiving tone signal
2496661891Method and apparatus for detecting an activation tone
2506650662Method and system for transmitting a DTMF signal with compressed voice in a packet switching network
2516650627Tone detection in communication networks
2526636595Non-KSU message delivery system
2536625271Scalable audio conference platform
2546608896Efficient digital ITU-compliant zero-buffering DTMF detection using the non-uniform discrete Fourier transform
2556603836Interactive voice response apparatus capable of distinguishing between user's incoming voice and outgoing conditioned voice prompts
2566594347Speech encoding in a client server system
2576590972DTMF detection based on LPC coefficients
2586580792Signal detector with automatic gain control
2596577624System for controlling a telephony device bus in a switching system
2606575900Meter with integrated database and simplified telemedicine capability
2616560331System and method for precise DTMF signal detection
2626556674Signal detector with matched filter coefficient

2002

2636498931CID message retrieval methods and devices
2646493441Method of controlling telecommunications signalling
2656493432System for ensuring calling party privacy in a call screening system
2666459785Method of providing a dial-in function in telecommunication systems
2676453153Employing customer premises equipment in communications network maintenance
2686449286R2 multi-frequency compelled signalling using a DSP on a network termination card
2696445773DMT test method for determining ADSL capability of cables
2706438224Tone detection
2716424925Circuit and method for detecting a tone signal
2726415139Detection circuit of tone signal
2736411687Call routing based on the caller's mood
2746385585Embedded data in a coded voice channel
2756385306Audio file transmission method
2766385299Line testing in a telecommunications network
2776381330False tone detect suppression using multiple frame sweeping harmonic analysis
2786370555Method and system for improved detection of analog signals
2796370506Communication devices, methods, and computer program products for transmitting information using voice activated signaling to perform in-call functions
2806370244Efficient digital ITU-compliant zero-buffering DTMF detection using the non-uniform discrete fourier transform
2816366652Method and apparatus for using a VM tone to prevent a voice announcement in a group call

2001

2826330318Method of and system for interrupting and parking calls in a switched telecommunications network
2836320951Transfer-connect telephony services utilizing automated audio systems
2846307922Telephone transaction processing as a part of a call transport
2856269160Communications device including an improved CPE alerting signal (CAS) detection system
2866269159Conferencing with a calling party
2876259691System and method for efficiently transporting dual-tone multi-frequency/multiple frequency (DTMF/MF) tones in a telephone connection on a network-based telephone system
2886240093Transfer method of push-button signals
2896236967Tone and speech recognition in communications systems
2906229889Robust signaling tone frequency measurement
2916212265Method and apparatus for electronic mail notification
2926208966Telephone network service for converting speech to touch-tones
2936208959Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel
2946205207Telephone transaction processing as a part of a call transport
2956201853Telephone technician's remote assist apparatus and method
2966195675Tone detection using discrete fourier transform techniques
2976195415Communication line test apparatus for a mobile radio system
2986172985Automatic detection of pots line
2996169783Line testing in a telecommunications network

2000

3006157704Subscriber line test system for access network
3016154645Method and apparatus for using a MS tone to prevent a voice announcement in a group call
3026151514Method and apparatus for normalizing DTMF messages from a cellular mobile station
3036147973Signal discrimination apparatus, a method for discriminating a signal, and a signal transmitting apparatus for voiceband signals
3046128369Employing customer premises equipment in communications network maintenance
3056122652Tone and periodical signal detection
3066108343Dynamically reconfigurable DSP architecture for multi-channel telephony
3076097792Interactive method and apparatus for the generation of leads
3086078660Method and device for decoding a sequence of signals
3096072864Transfer-connect telephony services utilizing automated audio systems
3106072385Message sending system
3116046977Method and apparatus for detecting signal misalignment
3126035179Transmission of voice-frequency signals in a mobile telephone system
3136031903Method for expediting access to services on a switched communications network
3146028927Method and device for detecting the presence of a periodic signal of known period
3156021192Tone detector
3166020834System and method for transmitting coded data signals over a bandlimited bus

1999

3175995557Tone detection with aliasing bandpass filters
3185982874Transmission system with improved tone detection
3195978676Inband signal converter, and associated method, for a digital communication system
3205978388Tone generator
3215966429Telephone transaction processing as a part of a call transport
3225963885Sensing circuit
3235963643Method and system for the transfer of information between two populations of persons, one nomadic and the other sedentary
3245960062Method of recording the communication between a CPE and a SPCS/server
3255937059DTMF detector for detecting DTMF signals using a digital signal processing chip and method thereof
3265933484Method for providing a menu to a subscriber on a switched communications network
3275920623Method and apparatus for defeating a predictive telemarketing system
3285910906Digital single-frequency tone detection in presence of aliases
3295907597Method and system for the secure communication of data
3305887248Audible tone signal service apparatus and method of a digital mobile services switching center
3315883940Interactive method and apparatus for the generation of leads
3325878131Interference attenuation for acoustic-dialers
3335872833Telephone transaction processing as a part of a call transport
3345862212Method and structure for detecting a customer premises equipment alerting signal
3355859913Method and system for the high-speed generation and transmission of a sequence of characters by means of voice frequencies

1998

3365850438Transmission system with improved tone detection
3375850437Transmission system with improved tone detection
3385835574Dual-tone multi-frequency signal transfer protocol
3395825871Information storage device for storing personal identification information
3405822424Dial pulse detector and detecting method for paging service for mechanical telephone subscriber
3415818930Auto-dialer housing
3425810450Wheel assembly with lighting circuit
3435809453Methods and apparatus for detecting harmonic structure in a waveform
3445809133DTMF detector system and method which performs frequency domain energy calculations with improved performance
3455793862Information signal detection device and information signal detection method
3465790653Line-powered detection of call progress tones
3475781626Communication device capable of controlling transmission parameters of outputted DTMF signals
3485781625System and apparatus for generating within the premises a dial tone for enhanced phone services
3495765125Detection of tones while minimizing incorrect identification of other sounds as tones
3505764758Interrupted tone converter
3515757513Signal discrimination circuit
3525749067Voice activity detector
3535748711Telephone transaction processing as a part of call transport
3545748637DTMF signaling on four-wire switched 56 KBPS lines
3555745555System and method using personal identification numbers and associated prompts for controlling unauthorized use of a security device and unauthorized access to a resource
3565732133System and method for selecting and generating telephone access numbers for limiting access to a telephone service
3575729602Programmable multi-tone voice message starting system
3585719932Signal-recognition arrangement using cadence tables
3595710808Telephone dialling code processor

1997

3605699421Telephone answering device with low cost dual tone multi-frequency detector
3615694466DTMF detector system and method which performs improved twist computation and thresholding
3625687177Tone blocking using variable delay buffer
3635668858Control device for a facsimile apparatus
3645666357DTMF tone passer in a voice communication system
3655659606Programmable modular apparatus and method for processing digital signals and detecting telephone tones
3665644634System and method for dual tone multifrequency detection using variable frame widths
3675638436Voice detection
3685638435Impulse signal convertor
3695633862DTMF signal transmission method in single frequency simultaneous transmitting and receiving system and single frequency simultaneous transmitting and receiving system transceiver capable of transmitting DTMF signal
3705627539Bidirectional signalling mechanism for interfacing computing devices to the analog telephone network
3715619565Voice activity detection method and apparatus using the same
3725619564Tone detector with improved performance in the presence of speech
3735615255Method and apparatus for measuring loads in a common channel signalling link
3745612617Frequency detection circuit
3755610978Ring discriminator
3765604793Tone blocking using variable delay buffer
3775592544DTMF signal judging apparatus

1996

3785588053DTMF detector system and method which performs static and dynamic thresholding
3795588052DTMF signal judging apparatus
3805583933Method and apparatus for the secure communication of data
3815572588Method and apparatus for detecting reception of a tone signal
3825563942Digital call progress tone detection method with programmable digital call progress tone detector
3835561700Device for measuring analog telephony signals
3845553116Telephone line monitoring apparatus and method
3855535271Apparatus and method for dual tone multifrequency signal detection
3865533118Voice activity detection method and apparatus using the same
3875530950Audio data processing
3885530743Telephone exchange apparatus and tone sending method in telephone exchange apparatus
3895528663DTMF detection for voice processing equipment
3905524139System for automatic access to automated telephonic information services
3915519774Method and system for detecting at a selected station an alerting signal in the presence of speech
3925506885Method of adapting processing parameters in a call processing system
3935495526Tone-detection method for detecting at least one tone in a dual-tone multifrequency signal, call-progress method using the same
3945483593Call progress decoder for multiple cadenced tones on telephone lines

1995

3955479501Far-end disconnect detector for telephony systems
3965479498Digital line card having universal port for upgrading electronic messaging system
3975477465Multi-frequency receiver with arbitrary center frequencies
3985471507Circuit for detecting object signal from input signal
3995465287Subscriber line impedance measurement device and method
4005465256Telephone cross connect status signal pre-processor
4015459785DTMF signal receiving circuit
4025459784Dual-tone multifrequency (DTMF) signalling transparency for low-data-rate vocoders
4035459781Selectively activated dual tone multi-frequency detector
4045457690DTMF Signaling on four-wire switched 56 Kbps Lines
4055442696Method and apparatus for detecting control signals
4065442694Ring tone detection for a telephone system
4075436964Programmable call progress tones for a switching system
4085428680DTMF signal receiving apparatus equipped with a DTMF signal judging circuit
4095428662Detecting make-break clicks on a telephone line
4105426696Method of improving receiver sensitivity and speech immunity with DTMF-reception
4115422945Fast last digit detection of a dialed telephone number
4125416836Disconnect signalling detection arrangement
4135416835Automatic signaling-type indicator for use in subsequent interactive dialing
4145408529Dual tone detector operable in the presence of speech or background noise and method therefor
4155406621Telephone tone analysis system
4165400394Adaptive echo canceller for voice messaging system
4175398031DTMF signal generating circuit
4185396536Automatic processing of calls with different communication modes in a telecommunications system
4195392348DTMF detection having sample rate decimation and adaptive tone detection
4205392347Ringing tone signal detecting circuit
4215390244Method and apparatus for periodic signal detection

1994

4225375166Communication apparatus with cross-talk protection
4235369693Telephonic telemeeting system
4245363443Differing frequency sine wave generation from a look-up table
4255359652Tone receiver comprising a switch capacitor zero crossing detector
4265353346Multi-frequency signal detector and classifier
4275353345Method and apparatus for DTMF detection
4285353344Method of determining levels at given frequencies of a VF signal
4295353342Adaptive multitone signaling method
4305349254Call progress detection circuit
4315347611Apparatus and method for transparent tone passing over narrowband digital channels
4325347572Telephone line monitoring apparatus and method
4335343414Apparatus for adaptively tuning to a received periodic signal
4345339251Apparatus for adaptively tuning to a received periodic signal
4355337347Method and system for progressive database search termination and dynamic information presentation utilizing telephone keypad input
4365333191Detection of multifrequency tone signals
4375325427Apparatus and robust method for detecting tones
4385321745Adaptive efficient single/dual tone decoder apparatus and method for identifying call-progression signals
4395319703Apparatus and method for identifying speech and call-progression signals
4405311589Apparatus and method for audible signaling tone recognition
4415311588Call progress detection circuitry and method
4425311575Telephone signal classification and phone message delivery method and system
4435307404Signal detecting device
4445295223Voice/voice band data discrimination apparatus
4455287405Called party response detecting apparatus

1993

4465267305Transparent inband signaling
4475265097Data processor
4485263081Method and apparatus for providing on-hook transmission for digital loop carrier channel units
4495257309Dual tone multifrequency signal detection and identification methods and apparatus
4505255310Method of approximately matching an input character string with a key word and vocally outputting data
4515251256Independent hysteresis apparatus for tone detection
4525247574Adaptive no balance DX signalling circuit
4535241591Telephone system having a dial data changeover switch
4545241579Status management method of a signalling service device in an electric switching system
4555222129Telephone charging signalling detector suitable for central office line interface circuits
4565218636Dial pulse digit detector
4575218635Low-frequency alternating current signal detector, in particular for central office line interface circuits
4585214693Multi-frequency signal receiver and a method of detecting the multi-frequency signal
4595198992Method and apparatus for improving wideband detection of a tone
4605195128Communication system, particularly a telephone communication system
4615181236Automatic call returning method for call distributor with message record capability
4625177785Method and system for secure telecommunications
4635177781Dialing pulse signature recognizing method and device

1992

4645172406DTMF signal detection apparatus
4655163084Voice information service system and method utilizing approximately matched input character string and key word
4665163050Configurable parameter DTMF detector
4675151935Programmable universal signaling circuit for a telephone network
4685144652Device for connecting a subscriber line to a selected internal line
4695144626Data processor
4705142569Apparatus for selectively enabling subscriber device to respond to ringing signal in dependence upon ringing cadence
4715140590Telephone or data switching system with variable protocol inter-office communication
4725138569Dual tone multi-frequency detector
4735127004Tone and announcement message code generator for a telephonic switching system and method
4745119418Telephone system with several terminals on a single line
4755119322Digital DTMF tone detector
4765117369DTMF receiver
4775109409Apparatus and method to detect telephony signaling states
4785099498Method for suppressing quantization noises superimposed on a sinusoidal audible tone transmitted in a digital telecommunications exchange system
4795086462Terminal repeater having a function for repeating DC loop signal
4805086456Dial unit detachably mounted on public telephone for equal access

1991

4815077735Method and an apparatus for mutually converting different signaling systems
4825073941Multifrequency detection
4835070526Signal analyzing system
4845060259Call progress capability for a switched channel data service unit
4855047764Paging system with dynamically programmable reception frequencies
4865034978Universal channel unit switchable between two wire and four wire configurations
4875022055Trunk dialing converter
4885007000Classification of audio signals on a telephone line
4894995076Call progress capability for a switched channel data service unit
4904993063Channel unit interface circuit

1990

4914979214Method and apparatus for identifying speech in telephone signals
4924979171Announcement and tone code generator for telephonic network and method
4934972466Digital composite tone alerting
4944945555Method and means for remote testing of unused telephone lines
4954944001Rotary dial pulse receiver
4964939765Interlock circuit for preventing corruption of telephone line signals
4974937851Loop status verification system
4984932043Apparatus for controlling key telephone station set in key telephone system
4994930152Call return telephone service
5004926461Telephone answering machine having call transfer capabilities
5014924501Dial pulse selection
5024922528Circuitry for recognizing two-tone compound signals in telephone installations
5034922527Small electronic apparatus
5044920561Ring detector for telephone line
5054918719Elimination of false requests for telephone operator assistance
5064912755Line current test device
5074908825Memory organization and output sequencer for a signal processor
5084907262Method of transmitting dual tone multi-frequency during communication in a private branch exchange using keyphones
5094893332Low-powered remote sensor

1989

5104881073Paging system with dynamically programmable reception frequencies
5114878051Paging system with commands for changing functionality of a paging receiver
5124876538Paging system sublocal switch
5134868873Pulse detector for counting dial generated pulses
5144868872Telephone tone detector
5154868861Trunk dialing converter
5164868558Paging system lata switch
5174853958LPC-based DTMF receiver for secondary signalling
5184852160Channel unit interface circuit
5194852157Multi-task state machine signalling translator
5204849688Detection of single-frequency signals
5214839920Method for determining telephone dial pulse parameters independently of subscriber line length
5224839842Digital tone detection and generation
5234829562Receiver for detecting different fixed frequency signals on a telephone trunkline
5244821313Paystation transmitter ground detect circuitry
5254815126Telephone line switch
5264815124DX circuit
5274811386Called party response detecting apparatus
5284797931Audio frequency signal identification apparatus
5294796290Ground start circuit
5304796287Digital loudspeaking telephone

1988

5314792985Transmitters and systems for tone-in-band transmission
5324782523Tone detection process and device for implementing said process
5334764966Method and apparatus for voice detection having adaptive sensitivity
5344757267Telephone system for connecting a customer to a supplier of goods
5354747131Dial tone detector
5364742537Telephone line monitoring system
5374742534Telephone receiving equipment for recognizing predetermined combinations of voice-frequency signalling components
5384742251Precise call progress detector
5394737987Circuit for evaluating call signals in a telecommunication system
5404737720DTMF generation using pre-summed tables
5414731827Interswitch line circuit
5424718057Streamlined digital signal processor

1987

5434709344Programmable multifrequency digital tone receiver
5444701950Telephone answering system with line detector
5454701948Communication system having separate unidirectional information signalling
5464698769Supervisory audio tone detection in a radio channel
5474696031Signal detection and discrimination using waveform peak factor
5484694482Digital tone detector
5494689760Digital tone decoder and method of decoding tones using linear prediction coding
5504686702Signal transmission control apparatus
5514686699Call progress monitor for a computer telephone interface
5524686490Digital data modulator and digital-to-analog converter
5534683567Asynchronous signaling system for digital communication channel
5544680758Switching system having tone trunk
5554679232Method and apparatus for providing a ground reference for telephone customer special circuits powered from a floating battery feed
5564679001Adaptive stop-notch filter
5574672603Combined analog/digital CCIS data transmitter/receiver circuit
5584669114Digital tone detector
5594669110Call progress tone system
5604644476Dialing tone generation
5614644345Interleaved dual bank encoder
5624639553Call signal detecting device

1986

5634626629Digital multifrequency signal receiver
5644626628Telephone line circuit having time-shared DTMF receivers
5654617427Square root circuit
5664614909Apparatus for identifying digital multi-frequency signals
5674614840Telecommunication line circuit and associated polarity reversal circuit
5684611325DTMF receiver sense and control arrangement
5694604755Feed forward dual channel automatic level control for dual tone multi-frequency receivers
5704604713Tone detector and multifrequency receiver using said detector
5714602131Touch tone decoder
5724599700Process and device for digital frequency generation
5734599495Apparatus for multifrequency signalling tone detection
5744593156Grounded tip detector
5754592051Activation in a digital subscriber connection
5764590595Apparatus for detecting in-band single frequency signaling tones from FDM channels
5774590432Constant-percent break pulse corrector
5784574376Activation of a transmission link by code sending
5794571723Pulse code modulated digital telephony tone generator
5804570260Digital tone signal generator for telephony system
5814570235Digital receiver of multifrequency signals with frequency recognition device
5824567328Energy detection circuit for a facsimile system controller
5834563681Tone receiver for digital data communication systems

1985

5844555593Electronic telephone relay
5854554542Guard tone capture method
5864554416Low voltage two wire to four wire telephone circuit converter apparatus
5874552994Apparatus for isolating the voice frequency path from the floating battery feed during signalling
5884551670Circuit for maintaining the DC voltage on an electrically isolated telecommunication line at a reference level
5894550225AC Signal-activated switching apparatus
5904546490Single frequency detection circuit
5914541088Tone generation circuit for automatic PCM-TDM telecommunication exchange
5924540854Subscriber line interface circuit
5934539692Digital automatic gain control circuit for PCM signals
5944536614Supervision and dial pulse detection circuit for a telephone subscriber line
5954535454Multifrequency tone distribution using a conferencing arrangement
5964535201Ground start detection in telephone loop signalling circuit
5974534041Digital circuit for determining the envelope frequency of PCM encoded call progress tones in a telephone system
5984528664Call progress signal monitor and method for telephone systems
5994523056Telephone including resistive array for dialing and system for using such telephone
6004521647Tone detection system and method
6014510601Digital frequency receiver
6024502049Universal signalling tone receiver
6034498171Tone source for telephone systems

1984

6044484035Dual tone multi frequency digital detector
6054479229Arrangement for and method of detecting multi-frequency sound code signals
6064479188Digital detector for a multi-frequency code in an analog signal
6074476557Duplex signaling circuit
6084467469Circuitry for recovery of data from certain bit positions of a T1 span
6094467277Programmable detector for tone signals
6104460808Adaptive signal receiving method and apparatus
6114460806Dual tone multifrequency and dial pulse receiver
6124459435Telephone privacy apparatus
6134454477Loop current detector with threshold setting impedance
6144440979Current sink for DPT channel unit
6154439639Digital circuit and method for the detection of call progress tones in telephone systems
6164435620Dial pulse delay circuit
6174431872Telecommunication receivers

1983

6184412299Phase jitter detector
6194410982Arrangement for extending digital signaling to telephone subscribers' substations
6204403298Adaptive techniques for automatic frequency determination and measurement
6214401860Frequency signaling method and apparatus with dynamic compensation for frequency errors
6224399536Convolution filter arrangement for digital multifrequency receiver
6234399535Digital tone generator
6244395595Digital pushbutton signalling receiver
6254393496Method for feeding call progress tones into conference connections
6264392206Printer
6274390983Digital frequency sender
6284386239Multifrequency tone detector
6294385385Circuit for monitoring a digital signal generator
6304385208Multifrequency receiver
6314384175Tone detection method and arrangement for observing and classifying repetitive status signals
6324383313Tone generator for PAM/TDM telecommunication system
6334379347Receiver for PCM-encoded multifrequency dialing signals
6344375102Digital code word detection
6354375014Current sensing trigger for a telephone system

1982

6364366348Method and apparatus for decoding and processing the informational content of multi-frequency signals
6374363100Detection of tones in sampled signals
6384361875Multiple tone detector and locator
6394355405Digital signalling system
6404354248Programmable multifrequency tone receiver
6414347408Multi-frequency signal receiver
6424347406Pulse detector circuit
6434336467Voltage detector
6444334273Signal processing system using a digital technique
6454328398Digital multi-frequency receiver
6464326105Dial pulse detector
6474322686Frequency comparator circuit
6484319334Frequency sensing device for reducing non-periodic components
6494319092Current detection circuit arrangement for an automatic telephone exchange
6504319091Dial pulse restorer
6514313107Tone signal detectors
6524313038DTMF Signal receiver
6534311878Dialing interval transmission gating arrangement

1981

6544301334Telecommunication subscriber line access circuit with ground key and insulation fault indication
6554300024Technique for measuring a duration of signaling pulses in a telephone circuit
6564292473Loop supervision circuit
6574286326Digital devices for spectrum analysis
6584286221Multi-frequency signal receiving apparatus
6594279017Method and device for detecting the presence of one or more pulse code modulated multi-frequency code signals
6604278842Circuit for eliminating spurious pulses in a dial pulse stream
6614277650Single frequency tone receiver
6624273965Tone decoding circuit
6634266099Pulse rejection and duration correction circuit
6644255623Apparatus for pulse train measurement
6654245325Digital multifrequency signalling receiver

1980

6664231018Tone signal detector
6674230912Dial pulse sensor and repeater circuit
6684230908Telephone summing circuit
6694227248PCM Tone signal generator
6704227055Multifrequency receiver
6714227054Digital constant-percent break pulse corrector
6724223185Multifrequency digital signal receiver
6734223184Minimum break/make pulse corrector
6744221936Loop to ground start circuit
6754219699Telephone supervision system using DTMF signals
6764218589Method and apparatus for testing tone generators
6774216463Programmable digital tone detector
6784211897Multifrequency signal receiving system
6794207436Constant percent break type dial pulse corrector
6804206323Dual tone multifrequency signal receiver
6814205203Methods and apparatus for digitally signaling sounds and tones in a PCM multiplex system
6824204094Tone applying line circuit
6834203008Digital signalling receiver for receiving PCM tones
6844199729Variable peak detector
6854198547Pulse circuit for two wire electronic PABX stations
6864197502Digital signal detector
6874196321Loopback test system
6884194092Device for detecting a frequency in a PCM coded signal
6894191862Dual frequency tone decoder
6904187403Voice-protected, frequency-selective signal receiver
6914185172Method of and means for detecting digitized multi frequency-coded signals
6924184053Ringing signal detector

1979

6934176286Signal translator with squelch
6944174466Multi-party telephone system allowing speech connection between extensions as between extensions and an outer line
6954171466Digital wave generator for composite tone
6964169969Apparatus for detecting in-band signalling signals
6974165450Telephone signalling test system
6984153819Telephone tone signalling receiver with up-conversion of frequency of tones controlled by word instructions
6994146751Solid state pulsing apparatus for pulsing selected line relay terminals
7004145580Multi-frequency signal receiver
7014145576DTMF and rotary dial signal receiver
7024140880Hold tone scanner
7034133982AC supervisory signal detector circuit
7044133979Multifrequency sender/receiver in a multi-time slot digital data stream

1978

7054130736Telecommunication system with keyboard selection
7064129756Telephone exchange signalling unit
7074124898Programmable clock
7084119808Multi-frequency receiver circuits
7094110565Duplex telephone signalling system
7104109109Method and apparatus for detecting the presence of signal components of predetermined frequency in multifrequency PCM signal
7114107475Receiver apparatus for detection of two voice frequencies in a multifrequency tone signal
7124101733Electronic DX signaling circuit
7134099125Frequency error correction circuit
7144097812Frequency selective detector circuit
7154092499Apparatus for detecting a voice frequency signal
7164091243Multifrequency signal receiver
7174088838Voice response system
7184087649Pulse counting circuit
7194087644Dial impulse relay circuit
7204085295Multi-frequency signal receivers
7214082924Reference signal circuit in a receiver for detecting two frequencies in a multifrequency tone signal
7224080516Multi-frequency signal receiver
7234076965Universal receiver/sender
7244075569Digital method and apparatus for dynamically generating an output pulse train having a desired duty cycle from an input pulse train
7254075513Averaging and peak detection circuit
7264071879Reversible current apparatus
7274071708Dial pulse detector
7284070631Digital noise blanking circuit
7294068309Method and device for detecting two different frequency amplitude and phase signals in a combined digital signal
7304068104Interface for in band SCPC supervisory and signalling system
7314066846Combined rotary dial and touch-tone telephone decoding system

1977

7324064488Sampled signal detector
7334061885Digital tone decoder
7344060797Serial digital bit stream code detector
7354055730Circuit for detecting dial pulses
7364051385Active networks and signalling equipment
7374048450Trunk circuit traffic analyzer
7384047114Digital detector
7394045620Digital tone detector
7404044206Digital decoder for multiple frequency telephone signalling
7414042790Voice guard circuit for a tone receiver
7424042789Tone combination detector and coincidence timer circuit
7434042788Tone detector
7444042787Output processing and output coupling circuit for a digital tone receiver
7454041248Tone detection synchronizer
7464037171High speed tone decoder utilizing a phase-locked loop
7474034300Circuit arrangement for evaluating received oscillations of a predetermined frequency
7484028501Method and apparatus for translating multiple frequency signalling
7494027102Voice versus pulsed tone signal discrimination circuit
7504025730In-band signal receiver
7514021620Multifrequency signal receiver with digital tone receiver
7524019114Circuit arrangement for the ungrounded transmission of signals through testing points in communication facilities
7534018996Communication network protection system
7544018991Multifrequency signal parity detector
7554016371Frequency tone detection
7564016370Digital tone decoder
7574010328Out-of-band signaling method and apparatus to adapt payphones to telephone systems
7584009354Signalling device for key telephone systems
7594009353Analog signal detection
7604004238Method and apparatus for the removal of ringing phenomena from signal impulses
7614004105Multifrequency signal receiver for use in telephone signaling systems or the like
7624002848Toll fraud eliminator for telephone systems
7634001521Signal identification system

1976

7643999013Bi-directional signaling apparatus
7653997727Time division multiplexed digital switching apparatus
7663993875Tone receiver
7673991324Dial pulse detector
7683990006Digital tone detector using concatenated detection intervals
7693988687Step-servoed tone detector
7703988548Dial pulse correction circuit for telephone signaling system
7713988547Telecommunication system having means for converting multifrequency selection signals into digital pulse trains
7723987249System for addressed timemultiplexed telecommunication
7733986112Novel technique for frequency detection utilizing switching filters
7743985970Regeneration of signalling pulses
7753985966Method and apparatus for generating digital dual frequency signals
7763985965Digital signal generator
7773979562Decoder
7783978283Switching arrangement for receiving DC signals
7793976843MFC receiver digital signal processing
7803971899Signalling device for key telephone systems
7813971897Circuit arrangement for a selective signal receiver, particularly for use in telephone systems
7823965457Digital control processor
7833963878Signal interpreting system for frequency selective multifrequency tone dialing
7843962541Frequency sample-and-hold circuit
7853961167PCM tone receiver using optimum statistical technique
7863961143Multi-frequency signalling system
7873961141Stop time-out until after first DTMF digit dialed circuit
7883959603Dual tone multiple frequency receiver/decoder
7893949177Method for frequency-recognition in selective signal receivers for use in telecommunication, particularly telephone systems
7903944753Apparatus for distinguishing voice and other noise signals from legitimate multi-frequency tone signals present on telephone or similar communication lines
7913941944Signalling device for key telephone systems
7923941937Dial pulse receiver
7933937899Tone detector using spectrum parameter estimation
7943936801Multifrequency signal receiver timing circuit
7953936611Time compression scanner
7963935395Selective signal receiver for use in telecommunication systems
7973935392Dial pulse detection method and apparatus
7983934097Multifrequency tone detection
7993934096Multi-frequency signal receiving circuit
8003932713Induction cancellation circuit
8013932708Frequency-selective signal receiver for communication equipments, more particularly telephone equipments
8023931480Time compression receiver
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017