Pulse or digital communications – Repeaters – Testing
Patent
1989-01-25
1992-10-27
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
341 50, 358141, 375 58, H03K 5156
Patent
active
051596121
ABSTRACT:
A pulse code modulation process converts an analog video signal into a digital signal to be passed through a recording or transmission channel. The digital signal includes a digital words of a given number of bits, and each digital word represents an amplitude level of the video signal. The digital words are allocated to a given set of graduated amplitude levels such that the sum ##EQU1## has a minimum value whereby
REFERENCES:
patent: 3678389 (1972-07-01), Heers
patent: 4387364 (1983-06-01), Shirota
patent: 4531153 (1985-07-01), Watanabe
patent: 4700363 (1987-10-01), Tomlinson et al.
Robert & Bosch GmbH
Safourek Benedict V.
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