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2017

19602223Differential signal transmission
29559803Electromagnetic spectrum management system
39542839Low delay low complexity lossless compression system

2016

49438307Robust time shift tracking UWB receiver
59426813Interference cancellation receiving method and interference cancellation receiving terminal
69374184Controlling of code block to physical layer mapping
79374174Pulse width modulated (PWM) sensor interface using a terminated symmetrical physical layer
89332585Non-synchronized ADPCM with discontinuous transmission
99295057Method and apparatus for compressing and transmitting ultra high speed data
109231710System and method for reducing on-chip memory for frame buffer storage in WCDMA receiver

2015

119172565Signaling between master and slave components using a shared communication node of the master component
129124365Enhanced mobile device audio performance
139071844Motion estimation with motion vector penalty
148971420Method and system permitting the sequential reorganization of signals
158948799Channel quality indicator apparatus and method
168928524Method and system for enhancing data rates

2014

178902997PARCOR coefficient quantization method, PARCOR coefficient quantization apparatus, program and recording medium
188879643Data substitution scheme for oversampled data
198848810Multiple transmitter system and method
208798174Method and device for quantizing likelihood quotients
218705972Energy-efficient and fault-tolerant resonator-based modulation and wavelength division multiplexing systems
228705635Method, medium, and system compressing and/or reconstructing image information with low complexity
238705633Method and apparatus for transporting an 8B/10B coded video stream across a 64B/66B coded link
248665970Method and arrangement related to blind detection
258660195Using quantized prediction memory during fast recovery coding
268625726Low power radio frequency to digital receiver

2013

278615045Apparatus and method for playout scheduling in voice over internet protocol (VoIP) system
288593932Efficient signal transmission methods and apparatus using a shared transmission resource
298576927Encoding method, encoding device, decoding method, decoding device, program, and recording medium
308576911Method and apparatus for motion estimation
318571854Detector for use in voice communications systems
328553785Apparatus and method for transmitting and recovering encoded data streams across physical medium attachments
338553784Method, apparatus and system for random linear network coding
348542752Hierarchical coding for multicast messages
358537171Piecewise non-causal compression and subsequent decompression of quantized data for processing of decompressed data in higher precision processing space
368514950Communication apparatus, relay method thereof, and computer-readable storage medium
378498343System for MIMO equalization of multi-channel transceivers with precoding
388467623Invariant pulse latency coding systems and methods systems and methods
398462845Encoding parameter determination for a hybrid encoding scheme
408451912Method and system for optimizing quantization for noisy channels
418428153Signal and devices for wired networks
428406314Two-dimensional DPCM with PCM escape mode
438406244Base station apparatus and data retransmission method of the same
448391373Concealment of transmission error in a digital audio signal in a hierarchical decoding structure
458358707Apparatus and method for ultra wide band communication based on multi-coded bi-orthogonal pulse position modulation

2012

468340445Image encoding device, image encoding method, image encoding/decoding system
478331462Method and apparatus for selective disregard of co-channel transmissions on a medium
488311413High power efficiency optical-wireless transmitter
498311077Modulator, filter, method of controlling gain of filter, and code modulating method
508300695Image encoding apparatus and image encoding method
518290099Phase noise limiting apparatus, phase noise limiting method, receiving apparatus, receiving method, and programs
528279947Method, apparatus and system for multiple-description coding and decoding
538270488Using black detection to improve video splicing
548265173Method for compression and expansion of analogue signals
558254470Encoding and decoding of embedded data stream in analog video using copy protection pulses
568229006Precision timing pulse width communications transforming reshaped pulse stream
578218656Pulse generator for ultra-wide-band modulating systems and modulating systems using it
588203930Method of processing a signal and apparatus for processing a signal
598200500Cue-based audio coding/decoding
608199835Systems and methods for adaptive signal sampling and sample quantization for resource-constrained stream processing
618175169Method and system for optimizing quantization for noisy channels
628149928Receivers for cycle encoded signals
638149927Method of and apparatus for encoding/decoding digital signal using linear quantization by sections
648144802Digital data encoding and decoding method and system
658139652Method and apparatus for decoding transmission signals in a wireless communication system
668121201Pulse transmitter, pulse receiver, pulse transmitting method, and pulse demodulating method
678121200Multi-level LVDS data transmission with embedded word clock
688116385Method for the transmission of a data word
698107751DPCM with adaptive range and PCM escape mode
708102923Hierarchical coding for multicast messages
718098742Gain control method and apparatus
728095833Transmitting apparatus, receiving apparatus, transmission method, and reception method

2011

738045625Encoding and decoding method to control a direct current (DC) component, and data processing apparatus performing the same
748023570System and apparatus for error control codes based on layering and linear transformations
758014453Method, codebook, and base station for precoding
768004430Coding scheme for serial data communications
777986855Block noise detector and detection method, and block noise reducer and reduction method
787983346Method of and apparatus for encoding/decoding digital signal using linear quantization by sections
797970062Method for distributing high and low-bandwidth voice channels using a minimum number of timeslots
807965779Low power, wavelet-based spike detector
817941320Cue-based audio coding/decoding
827933417Encoding device and decoding device
837903745Error detection and correction for base-band wireless systems
847894536Calibration model to mitigate data conversion errors
857876836Precision timing pulse width communications
867869524Pulse generator for ultra-wide-band modulating systems and modulating systems using it
877864869Satellite communication system utilizing low density parity check codes
887864868Method for detecting an octet slip

2010

897860172Self clock generation structure for low power local clock buffering decoder
907855677Code generation apparatus
917852949Spectral distance optimizing multi-band transmission
927796694Circuit and method or encoding DSSS signals
937787544Method and apparatus for generating codewords
947787543Pulse pattern generator and communication device evaluation system utilizing the same
957751486Systems and methods for transmitting data
967751485Signal processing using pilot based coding
977746936Method and device for optimizing codebook for quantized precoder by using steepest descent algorithm
987746935Digital amplifier system for driving a capacitive load
997738565Peak detector
1007720159Receivers for cycle encoded signals
1017684498Signal processing using pilot based coding
1027684497Method and apparatus for generating M-ary CPM waveforms from a superposition of PAM waveforms
1037684496Methods and systems for digital data transmission
1047680194Method and apparatus for signal processing, encoding, and decoding
1057675977Method and apparatus for processing audio signal
1067672379Audio signal processing, encoding, and decoding
1077668244Method and apparatus for increasing data transfer rates through a communication channel
1087660358Signal processing using pilot based coding
1097656954Single-ended tri-level encoding/decoding
1107644003Cue-based audio coding/decoding
1117643562Signal processing using pilot based coding
1127643561Signal processing using pilot based coding

2009

1137639744Programmable digital bandpass filter for a codec circuit
1147630431Robust message decoder for serial bus applications
1157609770Circuit structure and signal encoding method for a serial ATA external physical layer
1167602842Digital signal transmission system
1177602697Systems and methods for reducing the peak-to-average-power ratio in an OFDM-based system
1187593468Method of interfacing a high speed signal
1197580490Apparatus and method for channel estimation in an orthogonal frequency division multiplexing cellular communication system using multiple transmit antennas
1207573951Binary arithmetic decoding apparatus and methods using a pipelined structure
1217561624Multi-interval line coding for high speed data communication
1227555029Method for decoding a plurality of standard radio waves and standard radio wave receiver
1237532671Gain control method and apparatus
1247526032Sync signal insertion that breaks a maximum bit-run and has a particular detection distance between two or more sync patterns
1257519228Method and apparatus for encrypting and compressing multimedia data
1267519119Method and apparatus of converting a series of data words into a modulated signal

2008

1277471727Integrated serial data decoder
1287436904Data recovery apparatus and method for decreasing data recovery error in a high-speed serial link
1297424332Audio signal processing apparatus and related computer program
1307418007Method and apparatus for determining a transmission bit rate in a statistical multiplexer
1317412004Method and apparatus for controlling buffer overflow in a communication system
1327391814Gain control method and apparatus
1337391813Digital wireless communications device
1347379502Method of converting digital data
1357376189Remote control signal reception circuit, remote control signal reception method, remote control signal reception program, and computer-readable storage medium storing the program
1367346113Method and circuit for stop of signals quantized using noise-shaping
1377339996Receiver codec super set constellation generator
1387339995Receiver symbol alignment for a serial point to point link
1397333546Coding apparatus and method in a CDMA mobile communication system
1407330555Coding device and method, and recording medium
1417324598Apparatus and method to reduce quantization error
1427321627Method and system for providing zero detect and auto-mute
1437321601Method and apparatus for data transfer using a time division multiple frequency scheme supplemented with polarity modulation

2007

1447283592Method and apparatus for modulating and demodulating data into a variable length code and a providing medium for implementing the method
1457283591Parallelized dynamic Huffman decoder
1467283590Signal processing approach for channel coding based on inter-symbol-interference insertion
1477277490Apparatus for converting PCM signal
1487269351Multi-channel optical loading channel transmitter
1497269222Miniaturized pulse code modulation encoder
1507266153Method and apparatus for modulating and demodulating data into a variable length code and a providing medium for implementing the method
1517260151Dual phase pulse modulation system
1527257164Class D amplifier
1537257163Method and system for reducing inter-symbol interference effects in transmission over a serial link with mapping of each word in a cluster of received words to a single transmitted word
1547251280Circuit structure and signal encoding method for a serial ATA external physical layer
1557242719Method and apparatus for space-saving-variable length encoding and decoding
1567242718Coding standard selecting method and terminal device
1577239664Method for selecting the data rate for PCM upstream transmission
1587233624Method and system for all digital gain control
1597224737Method and apparatus employing PAM-5 coding with clock embedded in data stream and having a transition when data bits remain unchanged
1607218677Variable-length encoding apparatus and method
1617203242Code rate adaptive encoding/decoding arrangement and method for a pulse code modulation system
1627203241Methods and apparatus for adaptive PCM level estimation and constellation training
1637200175Data-modulating apparatus, data-modulating method, data-demodulating apparatus, data-demodulating method, and data-providing medium
1647190727Categorization of impairments affecting a communication channel
1657190726Method and apparatus for modulating and demodulating data into a variable-length code and providing a sync signal to the train of codes
1667187715Systems and methods for providing adaptive pulse position modulated code division multiple access for ultra-wideband communication links
1677180420System and method using triangulation with RF/LF and infrared devices for tracking objects
1687167524Method of inserting sync data in modulated data and recording medium containing the sync data
1697167523Spacial derivative bus encoder and decoder
1707164719System to reduce distortion due to coding with a sample-by-sample quantizer

2006

1717139437Method and system for removing artifacts in compressed images
1727137061Method and device for signaling a transmission fault on a data line
1737136419Pulse width communications using precision timing
1747136418Scalable and perceptually ranked signal coding and decoding
1757123659Digital reception apparatus for removing distortion from received signals
1767088778Method and apparatus for measurement of channel transmission accuracy
1777085329High speed decoding apparatus and method for analog subscriber connections
1787069489Transmission apparatus, reception apparatus, transmission method, and reception method
1797065142ADSL encoder and decoder
1807054373Method and apparatus for modulating and demodulating data into a variable-length code and providing a sync signal to the train of codes
1817050506Method and apparatus for modulating and demodulating data into a variable-length code and providing a sync signal to the train of codes
1827046975Method and system for blind detection of modulation type
1837046809Device and method for scrambling/descrambling voice and data for mobile communication system
1847046736Method and apparatus for modulating and demodulating data into a variable-length code and providing a sync signal to the train of codes
1857046735Method and apparatus for modulating and demodulating data into a variable-length code and providing a sync signal to the train of codes
1867031394Communication systems conveying voice and data signals over standard telephone lines
1877023927Constellation design for PCM upstream modulation
1887020209Data transmission method, data transmission system, transmitter and receiver
1897012965High speed leading or trailing bit value detection
1907003042Communication system transmitting encoded signal using block lengths with multiple integral relationship
1917003041Device and method for decoding turbo codes
1926985094Method for coding a data stream
1936983022Method and apparatus for modulating and demodulating data into a variable-length code and providing a sync signal to the train of codes

2005

1946965596.mu.-Law-to-a-law translating equipment and a-law-to-.mu.-law translating equipment
1956914940Device for improving voice signal in quality
1966885992Efficient PCM buffer
1976876869Coding assisting equipment, decoding assisting equipment, radio transmitter, and radio receiver
1986865391Method and system for vocoder bypass using electronic serial numbers
1996851083Method for transmitting source encoded digital signals

2004

2006836739Frequency interpolating device and frequency interpolating method
2016823017Systems, methods and computer program products for filtering glitches from measured values in a sequence of code points
2026775297Computer-based conversion of digital signals
2036754258Systems, methods and computer program products for averaging learned levels in the presence of digital impairments based on patterns
2046751260Detecting superimposed information channels for modem connections
2056744819System and method for selecting a data transmission mode
2066721287Far echo canceller for PCM modems
2076714908Modified concealing device and method for a speech decoder
2086693967Detecting encoding and encoding conversion for modem connections
2096687306Constellation adjustment based on detected encoding and encoding conversion for modem connections

2003

2106661847Systems methods and computer program products for generating and optimizing signal constellations
2116647064ADPCM encoding apparatus, ADPCM decoding apparatus and delay circuit
2126647023Voice coding conversion circuit between office exchange and ISDN keyphone system
2136611563Systems, methods and computer program products for data mode refinement of modem constellation points
2146606356Asynchronous digital system, asynchronous data path circuit, asynchronous digital signal processing circuit and asynchronous digital signal processing method
2156606355Channel coding in the presence of bit robbing
2166584443Apparatus and method for audio data/audio-related information transfer
2176577683Method and device for generating signal constellations in PCM space for high speed data communication
2186570927Method for tail-biting and decoding recursive systematic codes
2196567020Method and arrangement for reducing interference
2206542551Translation table and constellation design for a PCM modem subjected to alternating robbed bit signaling
2216522695Transmitting device for transmitting a digital information signal alternately in encoded form and non-encoded form
2226512472Method and apparatus for optimizing dynamic range of a wideband analog-to-digital converter
2236510180Embedded software negotiation of PCM companding format

2002

2246502069Method and a device for coding audio signals and a method and a device for decoding a bit stream
2256501802Digital silence for a PCM data communication system
2266498833Channel check test system
2276480552Soft output metrics generation for symbol detectors
2286476745Voice codec automatic gain control
2296470470Information coding method and devices utilizing error correction and error detection
2306463556Method and apparatus for interleaving in a communication system
2316463103Frame-based sign inversion method and system for spectral shaping for pulse-coded-modulation modems
2326438252Method for encoding bits in a signal
2336421388Method and apparatus for determining PCM code translations
2346418170Method and apparatus for achieving 180.degree. phase invariant transmission in a PCM modem system
2356404780Synchronizing data transfer protocol across high voltage interface
2366370507Frequency-domain scalable coding without upsampling filters
2376366624Systems and methods for receiving a modulated signal containing encoded and unencoded bits using multi-pass demodulation
2386360200Process for reducing redundancy during the coding of multichannel signals and device for decoding redundancy-reduced multichannel signals
2396356593Data optimized codec
2406343101Frame-based sign inversion method and system for spectral shaping for pulse-coded-modulation modems

2001

2416330247Communication protocol between a communication device and an external accessory
2426329937Robust data communications using multiple spectral images
2436324260Channel check test system
2446298091Method to play audio and video clips through MPEG decoders
2456266376System and method for adjusting PCM data frames for robbed bit signaling in a telephone network
2466263087Method of encoding bits in a signal
2476247035Reduced complexity and increased flexibility modified fast convolution algorithm
2486230120Detection of speech channel back-looping
2496226616Sound quality of established low bit-rate audio coding systems without loss of decoder compatibility
2506226304Leased line optimization and voice quality improvement in bandwidth constrained communication systems
2516201842Device and method for detecting PCM upstream digital impairments in a communication network
2526195384Method and apparatus compensating for effects of digital loss insertion in signal transmission between modems
2536185249Translation table design for a PCM modem
2546181752Device and method for detecting PCM upstream digital impairments in a communication network
2556181745Process for monitoring the quantization quality in digital radio or television transmission systems
2566181737Distinguishing received A-law and .mu.-law signals in a PCM modem

2000

2576166873Audio signal transmitting apparatus and the method thereof
2586157678Probabilistic trellis/coded modulation with PCM-derived constellations
2596151364Codec supporting PCM modem communications over a universal digital loop carrier
2606144703Circuit for synthesizing multiple pulse code modulation data
2616118813Technique for effectively treating robbed bit signaling in data communcations
2626115415Mapper for high data rate signalling
2636108626Object oriented audio coding
2646104991Speech encoding and decoding system which modifies encoding and decoding characteristics based on an audio signal
2656084915Signaling method having mixed-base shell map indices
2666081556Transparent technique for Mu-law modems to detect an all-digital circuit connection
2676069921System and method for reducing quantization noise
2686069920Method and arrangement for transmitting voice in a radio system
2696064698Method and apparatus for coding
2706052412Codec supporting PCM modem communications over a universal digital loop carrier
2716038529Transmitting and receiving system compatible with data of both the silence compression and non-silence compression type
2726034994Method for controlling the point of time when bypass mode operation is begun, based on the format of PCM data
2736026360Speech transmission/reception system in which error data is replaced by speech synthesized data
2746016327Electronic memory system and method for use in system for reducing quantization noise
2756012026Variable bitrate speech transmission system

1999

2765999347Method and apparatus for higher resolution audio signal transmitting
2775986596Concise storage and expansion of signal constellations in PCM space for high speed data communication
2785946652Methods for non-linearly quantizing and non-linearly dequantizing an information signal using off-center decision levels
2795946352Method and apparatus for downmixing decoded data streams in the frequency domain prior to conversion to the time domain
2805930300Cooperative feedback system and method for a compensation system associated with a transmitter or codec
2815892746System for recording and/or reproducing a pulse code modulation digital audio signal
2825872531Signal encode/decode system
2835867529Shaping filter for high data rate signalling
2845864311Systems for enhancing frequency bandwidth
2855862184Mapper for high data rate transmission through channels subject to robbed bit signalling
2865862179Mapper for high data rate signalling
2875860060Method for left/right channel self-alignment

1998

2885854600Hidden side code channels
2895850574Apparatus for voice encoding/decoding utilizing a control to minimize a time required upon encoding/decoding each subframe of data on the basis of word transfer information
2905838274Systems for achieving enhanced amplitude resolution
2915835889Method and apparatus for detecting hangover periods in a TDMA wireless communication system using discontinuous transmission
2925822371Mapper for high data rate signalling
2935808574Systems for achieving enhanced frequency resolution
2945805469Digital audio signal processing apparatus and method for error concealment
2955793809Transparent technique for Mu-law modems to detect an all-digital circuit connection
2965787113Mitigating clipping and quantization effects in digital transmission systems
2975784457Multimedia communication apparatus and method with audio codec selection and audio mating when setting codes
2985774844Methods and apparatus for quantizing, encoding and decoding and recording media therefor
2995761218Method of and apparatus for interpolating digital signal, and apparatus for and methos of recording and/or playing back recording medium
3005754594Cooperative feedback system and method for a compensation system associated with a transmitter or codec
3015754592Method and apparatus for randomized oversampling
3025754427Data recording method
3035734677Method for compression of loss-tolerant video image data from multiple sources
3045732124Apparatus and method for detecting the status of a PCM channel
3055724393Method and apparatus compensating for effects of digital loss insertion in signal transmissions between modems
3065715364Call monitor apparatus for speech processing equipment
3075714951Method and apparatus of reproducing digital data
3085712874Noise shaper capable of generating a predetermined output pattern in no-signal condition

1997

3095694426Signal quantizer with reduced output fluctuation
3105691916Method and device for calculating the quality of transmission media containing codecs
3115687243Noise suppression apparatus and method
3125684829Digital signal processing coding and decoding system
3135651090Coding method and coder for coding input signals of plural channels using vector quantization, and decoding method and decoder therefor
3145640161Silent data conversion system with sampling during electrical silence
3155638074Method and apparatus for slew limiting
3165635938Quantizing and dequantizing circuit with reduced size
3175623513Mitigating clipping and quantization effects in digital transmission systems
3185617506Method for communicating a value over a transmission medium and for decoding same
3195606362Variable bit rate audio information transmitting apparatus, and method therefor
3205594833Rapid sound data compression in code book creation

1996

3215572681Speech codec and a method of processing a speech signal with speech codec
3225568514Signal quantizer with reduced output fluctuation
3235563912High efficiency speech coding apparatus and transit switching system employing the same
3245561609Transmission system with reconstruction of missing signal samples
3255555273Audio coder
3265553080Speech decoding apparatus comprising alarm signal generator operable on deterioration of transmission path quality
3275550950Voice transfer system with low-error voice signal regeneration
3285544233Communication processing apparatus, communication
3295511093Method for reducing data in a multi-channel data transmission
3305493296Noise shaping circuit and noise shaping method
3315487087Signal quantizer with reduced output fluctuation

1995

3325479168Compatible signal encode/decode system
3335471506Method and apparatus for pulse communication
3345444741Filtering method and device for reducing digital audio signal pre-echoes
3355436933Idle channel noise reduction in a line card having a DSP equalizer
3365430492Method of transmitting digital HDTV signals
3375425082Communication processing apparatus, communication processing system, and communication processing method
3385424739Device and method for digitally shaping the quantization noise of an N-bit digital signal, such as for digital-to-analog conversion
3395420892Stabilized noise shaper of a small scale having a suppressed quantization noise in high frequency region without deteriorating S/N ratio
3405416483Method and circuit for noise shaping
3415396248Noise shaping circuit
3425394437High-speed modem synchronized to a remote CODEC
3435381143Digital signal coding/decoding apparatus, digital signal coding apparatus, and digital signal decoding apparatus

1994

3445363384Audio signal demodulation circuit
3455341417Integrated PCM-CODEC circuit with telemetering noise elimination
3465341398Method for repeaters to adaptively digitally code received analog information
3475317672Variable bit rate speech encoder

1993

3485255202Digital signal processing method and system, electric power system signal processing system and electric power control system
3495252972Codec having controllable frame synchronizing and clocking signals
3505239558Pulse code modulation circuit
3515237591Circuit for digitally adding loss to a signal
3525231492Video and audio multiplex transmission system
3535204677Quantizing error reducer for audio signal

1992

3545172393Circuit arrangement for channel-specific processing of a multi-channel input signal
3555166981Adaptive predictive coding encoder for compression of quantized digital audio signals
3565163053Audio signal demodulation circuit
3575159611Variable rate coder
3585144308Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither
3595144306Noise shaping circuit
36051289633-mode PCM/DPCM/APCM maximizing dynamic range
3615124701Quantization device with variable digital coding rate
3625095496Digital audio signal receiver
3635084904Signal transmission device

1991

3645073778Digital to analog converter with dither using two parallel paths
3655070515Method and apparatus for processing digital signal
3665062152PCM signal coding
3675058165Speech excitation source coder with coded amplitudes multiplied by factors dependent on pulse position
3685051799Digital output transducer
3695029162Automatic gain control using root-mean-square circuitry in a digital domain conference bridge for a telephone network
3705018199Code-conversion method and apparatus for analyzing and synthesizing human speech
3715014318Apparatus for checking audio signal processing systems
3725014304Method of reconstructing an analog signal, particularly in digital telephony applications, and a circuit device implementing the method
3735007086Apparatus and method for generating low level noise signals
3745003554Apparatus for the automatic in-circuit testing of coder/decoder telecommunications circuits and method therefor

1990

3754965830Apparatus for estimating distortion resulting from compressing digital data
3764933675Audio digital/analog encoding and decoding
3774924480Codecs with suppression of multiple encoding/decodings across a connection
3784920544Delta-sigma modulator
3794916742Method of recording and reading audio information signals in digital form, and apparatus for performing same
3804903021Signal encoding/decoding employing quasi-random sampling

1989

3814862173Method and circuit for carrying out forward and inverse quantization by varying a reference step size
3824862168Audio digital/analog encoding and decoding
3834860356Adaptive extrema coding signal processing system
3844852129Data compression system using frequency band translation and intermediate sample extrapolation
3854841571Privacy signal transmission system
3864831636Coding transmission equipment for carrying out coding with adaptive quantization
3874825451Technique for transmission of voice communications and apparatus useful therein
3884819253Method for determining PCM coding law
3894815137Voiceband signal classification
3904815136Voiceband signal classification
3914812846Dither circuit using dither including signal component having frequency half of sampling frequency
3924803727Transmission system
3934800558Telephone switching system frame sync generator

1988

3944783792Apparatus for transmitting digital signal
3954750167Digital audio transmission system
3964745366Signal processing arrangement
3974734768Method for transmitting differential pulse code modulation (DPCM) values
3984726037Predictive communication system filtering arrangement
3994724420Method and apparatus for quasi-analog reconstructions of amplitude and frequency varying analog input signals

1987

4004710960Speech-adaptive predictive coding system having reflected binary encoder/decoder
4014701937Signal storage and replay system
4024689759Process and installation for the analysis and retrieval of a sampling and interpolation signal
4034685115Apparatus for transmitting digital signals
4044680797Secure digital speech communication
4054680774Method and circuit for suppression of quantitizing noise ambiguities

1986

4064630285Method for reducing group delay distortion
4074626827Method and system for data compression by variable frequency sampling
4084617676Predictive communication system filtering arrangement
4094614934Digital-to-analog converter device for processing PCM signals of different sampling frequencies
4104611323Method for transmitting digitally coded analog signals
4114598398Test apparatus for PCM/FDM transmultiplexer
4124594575Digital processor for speech signals
4134587620Noise elimination device
4144583074Expansion circuit for digital signals
4154573167Digital communication system, particularly color television transmission system
4164571736Digital communication system employing differential coding and sample robbing
4174570153Signal conversion apparatus for use in PCM signal processing system

1985

4184558361Process and system for the compression of the flow rate of data transmitted between at least a television transmitter and a television receiver
4194553250Signal transmission system
4204553129Data transmission by subrate grouping
4214550425Speech sampling and companding device
4224538269Programmable coding and decoding arrangement
4234538236Adaptive digital signal coring circuit
4244534037Method and apparatus for scrambled pulse-code modulation transmission or recording
4254521883Telephony apparatus having filter capacitor switched to undergo discrete phase jumps
4264516258Bit allocation generator for adaptive transform coder
4274513279Charge redistribution mu-law PCM decoder
4284511992System for reconstituting, by filtering, an analog signal from a pseudo-analog signal
4294507792PCM Encoder conformable to the A-law
4304507791Analog and digital signal apparatus
4314507650Charge redistribution A-law PCM decoder
4324498173Technique for digital split-channel transmission using interpolative coders and decoders
4334493091Analog and digital signal apparatus
4344492953Method and apparatus for coding pulse-amplitude modulated signals into pulse-code modulated signals in accordance with an approximated logarithmic characteristic curve
4354491953Dual mode coding
4364491869Pulse code modulation system suitable for digital recording of broadband analog signals

1984

4374481659Apparatus and method of reducing the bit rate of PCM speech
4384468790System for the quantization of signals
4394468654Charge redistribution a-law PCM decoder
4404468653Charge redistribution mu-law PCM decoder

1983

4414417102Noise and bit rate reduction arrangements
4424385286Use of single reference voltage for analog to digital or digital to analog conversion of bipolar signals
4434381428Adaptive quantizer for acoustic binary information transmission
4444375581Digital transmission error reduction
4454370643Apparatus and method for compressively approximating an analog signal
4464369512Digital transmission circuit using means for introducing a redundancy on the most significant bit
4474367456PCM and PAM Conversion circuit including signal level variation on the PCM portion of the circuit

1982

4484366439PCM Decoder
4494361893Transmission system using differential pulse code modulation
4504357674PCM Signal calculator
4514355304Digital compandor
4524349913Method and apparatus for reducing the demand on the number of transferred bits when transferring PCM information
4534348768PCM Codec using common D/A converter for encoding and decoding
4544346476A/D, D/A Converter for PCM transmission system
4554334237Adaptive amplitude averaging for weighting quantizing noise
4564328584Method and arrangement for supervising signal amplitude converters
4574323885Noise and crosstalk reduction in mid-riser biased encoders
4584323730Idle channel noise suppressor for speech encoders
4594320519(Sin X)/X correction circuit for a sampled data system
4604319360Predictor stage for a digit rate reduction system
4614313204Digital encoding circuitry with means to reduce quantization noise

1981

4624306222(b+a)-Bit D/A converter with b-bit auxiliary D/A converter
4634302631Decimator apparatus for decreasing the word rate of a digital signal of the type employed in digital telephone systems
4644288873Analogue to digital converters
4654280086Method of and circuit arrangement for discharging a storage capacitor
4664267596Digital memory system
4674245341Device for transmitting stochastically coded information

1980

4684233528Sample-and-hold circuit with current gain
4694231101Digital filter arrangement for non-uniformly quantized PCM
4704231022Interpolative PCM decoder utilized for .mu.-law and A-law
4714222008Apparatus for dividing an arbitrary waveform into equal-amplitude steps
4724204163Minimum group pulse code modem having shape and amplitude codes
4734187466Signal injection technique
4744184116Communication system having analog-to-digital-to-analog conversion means
4754184052AM/FM time division surface wave device transmitter
4764181914System for reducing transmission problems in a parallel digital data transmission system

1979

4774161627Method of and system for generating digital test signals
4784151469Apparatus equipped with a transmitting and receiving station for generating, converting and transmitting signals
4794150368Signal coding for compressed pulse code modulation system
4804150367Encoder/decoder system employing pulse code modulation
4814133976Predictive speech signal coding with reduced noise effects

1978

4824124869System for the digital clamping of periodic, binary encoded signals
4834103108Circuit and method for digitally measuring signal levels of PCM encoded signals
4844101964Digital filter for pulse code modulation signals
4854092605Phase delay simulator

1977

4864056683Audio transmitting and receiving system
4874054863Error detection and correction system
4884040049Tandem block digital processor for use with nonuniformly encoded digital data
4894034305Demodulator for signals hybrid modulated by more and less significant digit signals in succession in each clock interval
4904032914Analog to digital converter with noise suppression
4914021652Incrementally adjustable digital attenuator/amplifier
4924010422Transmitter for forming non-linear pulse code modulated samples of analog signals by timing the integral of signal samples
4934005406Digital-analog converter
4944005274Pulse-code modulation communication system

1976

4953999129Method and apparatus for error reduction in digital information transmission systems
4963991269Digital coding without additional bits to provide sign information
4973984829Circuit arrangement for converting analog signals into PCM signals and PCM signals into analog signals
4983980971Modulator for hybrid modulation by more and less significant digital signals in succession in each clock interval and counterpart demodulator
4993949170Signal transmitting system including A-D and D-A converters
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017