1
Kees Schouhamer Immink
Kornelis A Schouhamer Immink: Method of transmitting information, encoding device for use in the method, and decoding device for use in the method. U S Philips Corporation, Thomas A Briody, William J Streeter, Edward W Goodman, October 28, 1986: US04620311 (55 worldwide citation)

A method of converting n-bit information words into m-bit code words, and the other way round, is described. The code words have a limited disparity. For every information word, two code words are assigned to a group of information words, which code words can be derived from one another by inversion ...


2
Kees Schouhamer Immink
Kornelis A Schouhamer Immink: Method of transmitting information, encoding device for use in the method, and decoding device for use in the method. U S Philips Corporation, Thomas A Briody, Jack E Haken, Anne E Barschall, June 7, 1988: US04750138 (6 worldwide citation)

A method for converting m-bit information words into n-bit code words and vice versa. The code words have a limited disparity in order to obtain a d.c. free code. A reduction of the low-frequency content of the spectrum is obtained by selecting the code words in such a way that the sum ##EQU1## rema ...


3
Dariush Divsalar, Fabrizio Pollara: Hybrid concatenated codes and iterative decoding. California Institute of Technology, Fish & Richardson P C, February 8, 2000: US06023783 (399 worldwide citation)

Several improved turbo code apparatuses and methods. The invention encompasses several classes: (1) A data source is applied to two or more encoders with an interleaver between the source and each of the second and subsequent encoders. Each encoder outputs a code element which may be transmitted or ...


4
Armando Cova: Predistortion in a linear transmitter using orthogonal kernels. Glenayre Electronics, Christensen O Connor Johnson Kindness PLLC, October 31, 2000: US06141390 (176 worldwide citation)

A system for linearly transmitting an amplified output signal using predistortion is disclosed. The system uses a straight inverse modeling scheme with orthogonal predictor variables to more easily and accurately determine the inverse of the distortion caused by a power amplifier of a RF transmitter ...


5
Donald V Perino, John B Dillon: Apparatus and method for multilevel signaling. Rambus, Blakely Sokoloff Taylor & Zafman, December 21, 1999: US06005895 (140 worldwide citation)

A system for transmitting information from a source to a destination using multilevel signaling. Multiple conductors are coupled between the transmission source and the transmission destination. Multiple drivers are coupled to the conductors at the transmission source. Each driver is coupled to a pa ...


6
Robert P McNamara, Timothy P Murphy, James C Long: Modulation and demodulation system employing AM-PSK and QPSK communication system using digital signals. First Pacific Networks, Townsend and Townsend, January 28, 1992: US05084903 (131 worldwide citation)

A communication network having a first broadband communications channel or transmitting bus and a second broadband communications channel or receiving bus, wherein the first broadband communications channel passes information upstream to a head end employing an offset quadrature phase shift keyed (O ...


7
John A C Bingham: Mitigating radio frequency interference in multi-carrier transmission systems. Amati Communications Corporation, Beyer & Weaver, March 7, 2000: US06035000 (130 worldwide citation)

Methods and mechanisms for reducing the impact of radio frequency interference in multi-carrier data transmission systems are disclosed. In one aspect of the invention, dummy tones are used to suppress emissions within restricted frequency bands. In another aspect of the invention, signals received ...


8
Eric C Hannah: Serial bus communication system. Intel Corporation, Trop Pruner & Hu P C, November 23, 2004: US06823023 (123 worldwide citation)

A method includes determining a first transfer function that characterizes a distortion introduced by a serial bus. A filter is designed to substantially cancel the distortion introduced by the first transfer function, and a signal is transmitted to the serial bus through the filter.


9
Peter G Baltus, Pieter S van der Meulen: Data transmission system and apparatus providing multi-level differential signal transmission. North American Philips Corporation, Leroy Eason, November 24, 1992: US05166956 (109 worldwide citation)

A data transmission system which provides differential transmission of a multi-level interface corresponding to a binary interface formed by a plurality of binary input signals. The binary interface is encoded by an encoder into a corresponding multi-level differential interface formed by a pluralit ...


10
Tetsu Taguchi: Modulated signal transmission system compensated for nonlinear and linear distortion. NEC Corporation, Sughrue Mion Zinn Macpeak & Seas, August 16, 1994: US05339054 (107 worldwide citation)

In a modulated signal transmission system operable in response to an input digital signal of a baseband to produce a modulated signal through a nonlinear amplifier, a nonlinear converter is controlled by a control signal generator to compensate for not only a nonlinear distortion but also a linear d ...