Method for pulse code modulating a digital video signal

Details Method for pulse code modulating a digital video signal Method for pulse code modulating a digital video signal

1988-07-25

1990-02-13

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358135, H04N 538

Patent

active

049011391

ABSTRACT:
In a system in which a digital video signal is transmitted with differential pulse code modulation, a predetermined number of samples alternate in a horizontal line of the digital video signal are grouped, and the center sample of the grouped samples of the digital video signal is transmitted with the original number of bits, while the other samples of a group are differentially modulated with reference to the respective center sample and are transmitted with the center sample as a cluster of samples.

REFERENCES:
patent: 3403226 (1968-09-01), Wintringham
patent: 3439753 (1969-04-01), Mounts et al.
patent: 4622579 (1986-11-01), Starck
patent: 4661862 (1987-04-01), Thompson
patent: 4759038 (1988-07-01), Takahashi et al.

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