Write clock pulse signal generator for digital time base correct

Details Write clock pulse signal generator for digital time base correct Write clock pulse signal generator for digital time base correct

1976-06-10

1978-01-17

Safourek, Benedict V.

Facsimile and static presentation processing

Static presentation processing

Attribute control

360 36, H04N 578

Patent

active

040694992

ABSTRACT:
In a time base corrector which converts incoming video signals to digital form and writes the digitized signals in a memory at a clocking rate varying in accordance with time base errors in the incoming signals, whereupon the signals temporarily stored in the memory are read out or fetched therefrom at a standard clocking rate and reconverted to analog form for eliminating the time base errors; the clocking rate for storing the digitized signals is determined by a write clock pulse signal generator having an automatic frequency control circuit in which the output frequency of a variable frequency oscillator is varied in dependence on the horizontal synchronizing signals in the incoming video signals, and an automatic phase control circuit in which the output of the variable frequency oscillator is phase shifted in dependence on the burst signals separated from the incoming video signals.

REFERENCES:
patent: 3749835 (1973-07-01), Arimura et al.
patent: 3820154 (1974-06-01), Faroudja et al.
patent: 3860952 (1975-01-01), Tallent

Affiliated with

Also associated with

Rating

Write clock pulse signal generator for digital time base correct does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Write clock pulse signal generator for digital time base correct, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Write clock pulse signal generator for digital time base correct will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2284403