Method of encoding a digital data stream

Details Method of encoding a digital data stream Method of encoding a digital data stream

2005-04-19

2005-04-19

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C375S244000, C375S242000

Reexamination Certificate

active

06882296

ABSTRACT:
A method of encoding a digital data stream which comprises providing a first stream of clock pulses at a first rate; deriving a second stream of clock pulses from the first stream at a second rate which is an integer sub-multiple of the first rate and less than the minimum bit rate in the data stream; monitoring the data stream for changes in level therein; counting pulses in the first stream starting with the occurrence of a pulse in the second stream; capturing the pulse count when a change in level in the data stream is detected or when the next pulse in the second stream of clock pulses occurs; and upon the occurrence of this pulse in the second stream producing a time domain descriptor of the data by combining the count obtained with information as to the direction of the change in level in the data input stream.

REFERENCES:
patent: 4358845 (1982-11-01), de Passoz
patent: 5014270 (1991-05-01), Sillere
patent: 6037884 (2000-03-01), Thornton
patent: 6559788 (2003-05-01), Murphy
patent: WO 0237723 (2001-11-01), None

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