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Class Information
Number: 375/292
Name: Pulse or digital communications > Multilevel > Disparity reduction
Description: Subject matter where the average transmitted amplitude level for a predetermined group of bits is reduced as far as possible in attempting to reduce d.c. components.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7558326 |
Method and apparatus for sending auxiliary data on a TMDS-like link |
Jul. 7, 2009 |
| 7519130 |
Front end interface for data receiver |
Apr. 14, 2009 |
| 7471737 |
Hardware efficient FSK demodulator |
Dec. 30, 2008 |
| 7339502 |
Method and device for transmitting data over a plurality of transmission lines |
Mar. 4, 2008 |
| 7260155 |
Method and apparatus for encoding and decoding digital communications data |
Aug. 21, 2007 |
| 7116678 |
High speed physical layer for CSMA/CD systems |
Oct. 3, 2006 |
| 7110681 |
Method and apparatus for optical transmission |
Sep. 19, 2006 |
| 7042957 |
Method and communication system for transmitting information with the aid of a multicarrier method |
May. 9, 2006 |
| 7039121 |
Method and system for transition-controlled selective block inversion communications |
May. 2, 2006 |
| 6956510 |
Methods, software, circuits and systems for coding information |
Oct. 18, 2005 |
| 6865231 |
High-speed interconnection adapter having automated crossed differential pair correction |
Mar. 8, 2005 |
| 6738394 |
Method, apparatus and protocol for the unidirectional and interference-safe transmission of digital data via radio waves |
May. 18, 2004 |
| 6509849 |
Method and device for digitally coding binary data with a particular transmit signal spectrum |
Jan. 21, 2003 |
| 6477209 |
Method for encoding and decoding recording codes and method for inserting synchronization signals |
Nov. 5, 2002 |
| 6430230 |
Methods of encoding payload bits for transmission |
Aug. 6, 2002 |
| 6351501 |
Apparatus and method for providing direct current balanced code |
Feb. 26, 2002 |
| 6323787 |
Data transmission method and device |
Nov. 27, 2001 |
| 6278740 |
Multi-bit (2i+2)-wire differential coding of digital signals using differential comparators and majority logic |
Aug. 21, 2001 |
| 6252913 |
Method of transmitting a frequency-modulated asynchronous NRZ signal |
Jun. 26, 2001 |
| 6208697 |
Channel code converter capable of decreasing DC component and channel coding system therefor |
Mar. 27, 2001 |
| 6054944 |
Data transmission method and device using 8-10 bit conversion and successive plus and minus running disparity synchronous data words |
Apr. 25, 2000 |
| 6049571 |
Encoding circuit with a function of zero continuous-suppression in a data transmission system |
Apr. 11, 2000 |
| 6026124 |
Transition-controlled digital encoding and signal transmission system |
Feb. 15, 2000 |
| 6002718 |
Method and apparatus for generating runlength-limited coding with DC control |
Dec. 14, 1999 |
| 5999571 |
Transition-controlled digital encoding and signal transmission system |
Dec. 7, 1999 |
| 5960041 |
Method and apparatus for generating high rate codes for recording information on a magnetic medium |
Sep. 28, 1999 |
| RE36096 |
Arrangement for recording clock run-in codewords at the beginning of a track on a magnetic record carrier |
Feb. 16, 1999 |
| 5825824 |
DC-balanced and transition-controlled encoding method and apparatus |
Oct. 20, 1998 |
| 5793262 |
Build-out network for a built-in type balanced line driver circuit |
Aug. 11, 1998 |
| 5784409 |
Encoding data |
Jul. 21, 1998 |
| 5644601 |
Method and apparatus for bias suppression in a VCO based FM transmission system |
Jul. 1, 1997 |
| 5623517 |
Transmission system with improved decoding of a block code |
Apr. 22, 1997 |
| 5602873 |
Flash NRZI infrared modem |
Feb. 11, 1997 |
| 5455719 |
Data recording method in which pilot signal period coincides with cumulative bit disparities of insert data |
Oct. 3, 1995 |
| 5454006 |
Method and apparatus for bandwidth limited binary signals |
Sep. 26, 1995 |
| 5436752 |
Receive-side circuit for a system for optically transmitting a digital signal over a dispersive optical waveguide |
Jul. 25, 1995 |
| 5425033 |
Detection of errors in a digital transmission system |
Jun. 13, 1995 |
| 5420844 |
Information recording and reproducing apparatus for reducing average DC level variation |
May. 30, 1995 |
| 5303265 |
Frequency independent encoding technique and apparatus for digital communications |
Apr. 12, 1994 |
| 5283576 |
Disparity detection circuit for a 2-bit to 4-bit coded signal decoder |
Feb. 1, 1994 |
| 5276708 |
Coding method for reducing the D.C. component in the data stream of a digital signal |
Jan. 4, 1994 |
| 5257287 |
Automatic polarity detection and correction method and apparatus employing linkpulses |
Oct. 26, 1993 |
| 5245483 |
Arrangement for recording clock run-in codewords at the beginning of a track on a magnetic record carrier |
Sep. 14, 1993 |
| 5229769 |
Method and circuit for performing running disparity measurements |
Jul. 20, 1993 |
| 5230008 |
Multi-amplitude sample generating apparatus and method |
Jul. 20, 1993 |
| 5200979 |
High speed telecommunication system using a novel line code |
Apr. 6, 1993 |
| 5166958 |
Coding apparatus with low-frequency and DC suppression |
Nov. 24, 1992 |
| 5136436 |
Apparatus for recording a digital information signal and utilizing the digital sum value thereof to record an auxiliary digital signal, and apparatus for reproducing such recorded signals |
Aug. 4, 1992 |
| 5099497 |
Polarity detector for subscriber lines |
Mar. 24, 1992 |
| 5042037 |
Digital data modulation circuit having a DC component suppression function |
Aug. 20, 1991 |
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