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Class Information
Number: 341/58
Name: Coded data generation or conversion > Digital code to digital code converters > To or from minimum d.c. level codes
Description: for converting digital signals to or from other digital signals wherein the coding is arranged to minimize the direct current component present in the converted signal.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
6344807 Packet-frame generator for creating an encoded packet frame and method thereof Feb. 5, 2002
6340938 Demodulating device, demodulating method and supply medium with predetermined error length Jan. 22, 2002
6333704 Coding/decoding system of bit insertion/manipulation line code for high-speed optical transmission system Dec. 25, 2001
6323787 Data transmission method and device Nov. 27, 2001
6323789 Method and apparatus for combining a plurality of 8B/10B encoded data streams Nov. 27, 2001
6313764 Demodulating device, demodulating method and transmission medium Nov. 6, 2001
6311305 Method and system for overriding error correction Oct. 30, 2001
6304196 Disparity and transition density control system and method Oct. 16, 2001
6295010 8B/10B encoder system and method Sep. 25, 2001
6288655 Encoding and decoding techniques for data in 24 bit sequence Sep. 11, 2001
6288657 Encoding apparatus and method, decoding apparatus and method, and distribution media Sep. 11, 2001
6281815 Method of allocating RLL code having enhanced DC suppression capability, modulation method, demodulation method, and demodulation apparatus therefor Aug. 28, 2001
6278386 Method of inhibiting copying of digital data by encoding decryption date within alternative channel bit selections Aug. 21, 2001
6268810 Method of generating run length limited (RLL) code having improved DC suppression capability and modulation/demodulation method of the generated RLL code Jul. 31, 2001
6265994 Device for encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versa Jul. 24, 2001
6255967 Frame-based spectral shaping method and apparatus Jul. 3, 2001
6246346 Storage system employing high-rate code with constraint on run length between occurrences of an influential pattern Jun. 12, 2001
6241778 Methods and apparatus for implementing run-length limited and maximum transition run codes Jun. 5, 2001
6236686 Data processing equipment and method May. 22, 2001
6236340 Modulation encoders and decoders May. 22, 2001
6229458 Rate 32/34 (D=0, G=9/I=9) modulation code with parity for a recording channel May. 8, 2001
6225921 Device for encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versa May. 1, 2001
6208697 Channel code converter capable of decreasing DC component and channel coding system therefor Mar. 27, 2001
6204781 General rate N/(N+1) (0, G) code construction for data coding Mar. 20, 2001
6198413 Partitioned DC balanced (0,6) 16B/18B transmission code with error correction Mar. 6, 2001
6195025 Method and means for invertibly mapping binary sequences into rate 2/3 (1,K) run-length-limited coded sequences with maximum transition density constraints Feb. 27, 2001
6184806 Rate 32/33 (D=0, K=6) run length limited modulation code having optimized error propagation Feb. 6, 2001
6175317 Two-dimensional DC-free encoder and decoder Jan. 16, 2001
6169769 Method and apparatus for bias suppression in a VCO based FM transmission system Jan. 2, 2001
6141787 Digital modulation and demodulation Oct. 31, 2000
6127951 Modulating device, modulating device, demodulating device, demodulating device, and transmission medium run length limited coder/decoder with restricted repetition of minimum run of bit sequen Oct. 3, 2000
6121902 Optical disc recording apparatus, optical disc, and optical disc reproducing apparatus Sep. 19, 2000
6111528 Communications arrangements for network digital data processing system Aug. 29, 2000
6108149 Digital data transmitting apparatus for transmitting partial response signals Aug. 22, 2000
6104324 Coding/decoding method for reproducing data in high density and reproducing data, and apparatus therefor Aug. 15, 2000
6097320 Encoder/decoder system with suppressed error propagation Aug. 1, 2000
6091347 Device and method for modulation and transmission medium Jul. 18, 2000
6084535 System and method for generating many ones codes with hamming distance after precoding Jul. 4, 2000
6084536 Conversion of a sequence of m-bit information words into a modulated signal Jul. 4, 2000
6058087 Information recording apparatus, information recording medium and information reproducing apparatus May. 2, 2000
6054944 Data transmission method and device using 8-10 bit conversion and successive plus and minus running disparity synchronous data words Apr. 25, 2000
6054942 System and method for scaleable encoding and decoding of variable bit frames Apr. 25, 2000
6046691 Rate 16/17 (0,5) modulation code apparatus and method for partial response magnetic recording channels Apr. 4, 2000
6044053 Dc-balance-value calculation circuit and recording signal generator using the same Mar. 28, 2000
6043764 System for decoding the EFM and EFM-plus format in optical disc (CD and DVD) read units and corresponding method of decoding Mar. 28, 2000
6031472 Encoding/detection method for digital data transmitter with a signal having multiple levels Feb. 29, 2000
6023234 EFM encoder and DSV calculator Feb. 8, 2000
6018304 Method and apparatus for high-rate n/n+1 low-complexity modulation codes with adjustable codeword length and error control capability Jan. 25, 2000
6014094 DSV control system Jan. 11, 2000
6008744 Processing unit Dec. 28, 1999

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