Patents
Patents for H03M 7 - Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits (33,242)
03/1981
03/11/1981EP0024894A1 Decoder circuit
02/1981
02/03/1981CA1095166A1 Device for transmitting digital information
01/1981
01/27/1981US4247921 Decoder
01/21/1981EP0022713A1 Device for coding and decoding a digital videophone signal
01/13/1981US4245328 Binary coded decimal correction apparatus for use in an arithmetic unit of a data processing unit
01/13/1981CA1093697A1 Digital-to-analogue converter
01/07/1981EP0021283A1 Digital data apparatus
01/06/1981US4243977 Delta sigma to PCM converter
01/06/1981CA1093211A1 Tandem block digital processor for use with nonuniformly encoded digital data
12/1980
12/23/1980US4241414 Binary adder employing a plurality of levels of individually programmed PROMS
12/16/1980CA1152182B Dc-free encoding for data transmission system
12/02/1980US4237496 Device for coding/decoding data for a medium
12/02/1980CA1152181B Decoding apparatus and method for d.c. free data transmission system
11/1980
11/26/1980EP0019261A1 Adjustable attenuator for a digital telecommunication exchange, especially a telephone exchange
11/18/1980US4234897 DC Free encoding for data transmission
11/18/1980US4234761 Method of communicating digital speech data and a memory for storing such data
11/18/1980CA1089993A1 Apparatus and method for generating a data code with a spectral null
11/18/1980CA1089770A1 Methods of a coarse-scan/fine-print character reproduction with compression
11/12/1980EP0018739A2 A decoder circuit for a semiconductor memory device
11/11/1980CA1089569A1 Binary multiplier circuit including coding circuit
11/04/1980US4232375 Data compression system and apparatus
10/1980
10/29/1980EP0017688A1 Monolithic integrated circuit
10/28/1980US4231023 Binary to ternary converter
10/14/1980US4228467 Reduced redundancy facsimile transmission installation
10/09/1980EP0016050A4 Apparatus and method for compressing data.
10/07/1980US4227204 Method and apparatus for PCM-encoding NTSC color television at sub-Nyquist rate
10/01/1980EP0016050A1 Apparatus and method for compressing data.
09/1980
09/30/1980US4225885 Method and apparatus for adaptive transform coding of picture signals
09/09/1980CA1085526A1 Complex character generator
09/09/1980CA1085510A1 Compressed refresh buffer
09/02/1980CA1152164B Dc free encoding for data transmission system
09/02/1980CA1085000A1 Dc free encoding for data transmission system
08/1980
08/26/1980US4219890 Digital signal regulation system
08/26/1980US4219851 Group coded recording data recovery system
08/19/1980US4218761 Magnetic bubble domain decoder organization
08/12/1980CA1083717A1 Signal coding for telephone communication system
08/05/1980US4216460 Transmission and/or recording of digital signals
08/05/1980US4216354 Process for compressing data relative to voice signals and device applying said process
08/05/1980CA1083260A1 Analog to digital converter
07/1980
07/15/1980CA1081790A1 Transmission system with a transmitter and a receiver for signal transmission by means of discrete output values which characterize the tansmitted signqls in time quantizationaand an at least trivalent amplitude quantization
07/08/1980US4212036 Method for coding addresses of information change picture elements in facsimile signal
06/1980
06/24/1980US4209773 Code converters
06/24/1980US4209771 Code converting method and system
06/24/1980CA1080366A1 First in - first out memory array containing special bits for replacement addressing
06/10/1980US4207599 Run length encoding and decoding process and apparatus
06/03/1980US4206447 Adaptive quantizer apparatus for differential coding of nonuniform digital signals
05/1980
05/27/1980US4205200 Digital communications system utilizing controllable field size
05/20/1980US4204163 Minimum group pulse code modem having shape and amplitude codes
05/20/1980US4204090 Process and an arrangement for reducing the redundancy of binary character sequences which describe characters or graphic patterns
05/06/1980US4201909 Data-transmission system and method using fiber-optical transmission
04/1980
04/29/1980US4200917 Quiet column decoder
04/29/1980US4200886 Method for transmitting video signals with the aid of DPC modulation and controlled quantizer
04/29/1980CA1076703A1 Digital speech communication system
04/15/1980US4198700 Column decode circuit for random access memory
04/15/1980US4198577 Loop decoder for Josephson memory arrays
04/15/1980CA1075818A1 Binary to modulo m translation
04/15/1980CA1075817A1 Sequential encoding and decoding of variable word length fixed rate data codes
03/1980
03/18/1980CA1074016A1 Data expansion apparatus
03/04/1980US4192010 Data reduction system
03/04/1980US4191858 Block digital processing system for nonuniformly encoded digital words
02/1980
02/26/1980US4190897 Binary coded decimal addressed Read-Only-Memory
02/26/1980US4190893 Modular modulo 3 module
02/19/1980US4189756 Apparatus for generating bi-phase coded characters
02/19/1980US4189715 μ-Law to floating point converter
02/12/1980US4188669 Decoder for variable-length codes
02/06/1980EP0007754A1 Decoder and method of decoding
02/05/1980CA1071332A1 Data processing system
01/1980
01/29/1980US4186375 Magnetic storage systems for coded numerical data with reversible transcoding into high density bipolar code of order n
01/29/1980US4186272 Code generator
01/24/1980WO1980000107A1 Apparatus and method for compressing data
01/22/1980US4185320 Decoder circuit
01/22/1980US4185190 Data accumulation and compression apparatus
01/01/1980US4181973 Complex character generator
12/1979
12/25/1979CA1068822A Digital to analog converter for a communication system
12/11/1979CA1068007A1 Automatic terminal data rate selection
12/04/1979US4177456 Decoder for variable-length codes
12/04/1979US4177455 Electrically configurable high-low decoder
12/04/1979CA1067621A1 Apparatus and method for composing information on a data bus
11/1979
11/27/1979US4176342 Electrical control systems for transmitting signals of different magnitudes
11/27/1979US4176287 Versatile CMOS decoder
10/1979
10/23/1979CA1065069A1 Signal coding for telephone communication system
10/16/1979CA1064618A1 Compression of gray scale imagery to less than one bit per picture element
10/02/1979CA1063719A1 Phase locked loop decoder
09/1979
09/18/1979US4168513 Regenerative decoding of binary data using minimum redundancy codes
09/18/1979US4168469 Digital data communication adapter
09/11/1979US4167731 Integrating code converter
08/1979
08/21/1979US4165504 CMOS Decoder
08/07/1979US4163967 Reversible code compressor
07/1979
07/31/1979US4163287 Binary multiplier circuit including coding circuit
07/31/1979CA1059637A1 Apparatus for cross-array correlation and compression coding between two-dimensional matrices derived from two-valued picture points
07/31/1979CA1059636A1 Apparatus and method employing modified zero modulation data code
07/26/1979WO1979000462A1 A method and an arrangement for reducing the demand on the number of transferred bits when transferring pcm information
07/17/1979US4161627 Method of and system for generating digital test signals
07/17/1979CA1058754A1 Minimum pitch mosfet decoder circuit configuration
07/11/1979EP0002998A1 Method and system for speech data compression
06/1979
06/12/1979US4158199 Decoder for identification of bacteria
06/12/1979CA1056506A1 Decoding circuit for variable length codes
05/1979
05/29/1979US4156938 MOSFET Memory chip with single decoder and bi-level interconnect lines
05/29/1979CA1055612A1 Zero suppression in pulse transmission systems
05/29/1979CA1055611A1 Uniform decoding of minimum-redundancy codes