Apparatus for inserting a digital sync word, phase-synchronized

Details Apparatus for inserting a digital sync word, phase-synchronized Apparatus for inserting a digital sync word, phase-synchronized

1977-01-28

1978-10-10

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 13, 358 17, H04N 944, H04N 578, H04N 932

Patent

active

041199995

ABSTRACT:
Apparatus is disclosed for processing an analog color video information signal for recording on a magnetic media which involves stripping the horizontal synchronization pulses from the horizontal blanking intervals of the analog video information signal, sampling the video information signal at a predetermined data rate that is a multiple of the chrominance subcarrier frequency and converting the samples into a number of digital data streams having said predetermined data rate and thereafter inserting a unique digital synchronization word into the horizontal blanking interval on at least alternate ones of successive video lines so that the synchronization word is synchronized relative to the chrominance subcarrier and the phase relationship between the synchronization words and the subcarrier thereby remains constant.

REFERENCES:
patent: 3755624 (1973-08-01), Sekimoto
patent: 3795763 (1974-03-01), Golding et al.

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