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Class Information
Number: 341/71
Name: Coded data generation or conversion > Digital code to digital code converters > To or from nrz (nonreturn-to-zero) codes > To or from bi-phase space or mark codes (e.g., double frequency code, fm code)
Description: Subject matter for converting digital signals to or from other digital signals wherein there is a transition at the beginning of every bit cell and (a) a one is no second transition and a zero is a second transition half a bit period later, or (b) a one is a second transition half a bit period later and a zero is no second transition.










Patents under this class:

Patent Number Title Of Patent Date Issued
8605912 Biphase mark code decoder and method of operation Dec. 10, 2013
8350734 Method and apparatus for digital to analog conversion of data stream with random and low-frequency periodic jitter Jan. 8, 2013
7515074 Coding information in integrated circuits Apr. 7, 2009
7369067 Optical coupled type isolation circuit May. 6, 2008
6933866 Variable data rate receiver Aug. 23, 2005
6778108 Method and apparatus for compression of binary data Aug. 17, 2004
6757342 Data demodulation Jun. 29, 2004
6567487 Method for the sampling of biphase coded digital signals May. 20, 2003
6476743 Magnetic stripe reader Nov. 5, 2002
6400288 Method and apparatus for generating code words with shifted tribit error protection Jun. 4, 2002
6097322 Device and method for controlling the sampling of a signal conveying binary information coded according to a two-phase code Aug. 1, 2000
5754587 Method and apparatus for bias suppression in a VCO based FM transmission system May. 19, 1998
5466920 Real time decoding for card transaction terminal Nov. 14, 1995
5466920 Real time decoding for card transaction terminal Nov. 14, 1995
5446765 Apparatus for recovering data and clock information from an encoded serial data stream Aug. 29, 1995
5379037 Apparatus for decoding degraded data signals Jan. 3, 1995
5298897 Method and apparatus for decoding two frequency (f/sf) data signals Mar. 29, 1994
5168275 Method and apparatus for decoding two frequency (F/2F) data signals Dec. 1, 1992
4876697 Three-part decoder circuit Oct. 24, 1989
4757520 FM signal demodulating apparatus Jul. 12, 1988
4547764 Pulse width decoder for double frequency encoded serial data Oct. 15, 1985
4453157 Bi-phase space code data signal reproducing circuit Jun. 5, 1984
4441193 Frequency-encoding circuit for reducing distortion Apr. 3, 1984
4389636 Encoding/decoding syncronization technique Jun. 21, 1983
4017803 Data recovery system resistant to frequency deviations Apr. 12, 1977
3967062 Method and apparatus for encoding data and clock information in a self-clocking data stream Jun. 29, 1976
3967061 Method and apparatus for recovering data and clock information in a self-clocking data stream Jun. 29, 1976
3938187 System for putting an information record onto a magnetic substrate Feb. 10, 1976











 
 
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