Television synchronizing signal pattern correction circuit

Details Television synchronizing signal pattern correction circuit Television synchronizing signal pattern correction circuit

1987-04-13

1989-03-28

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358155, H04N 504

Patent

active

048169072

ABSTRACT:
A television synchronizing signal pattern correction circuit has a change-over switch (23) which can supply a vertical synchronizing signal (V') obtained from an input (13) or from an output (17) of a delay circuit (15). The change-over switch (23) is operated by a signal obtained from an output (31) of a simple measuring circuit (9). With the aid of two pairs of D-flipflops (35, 37; 39, 41), two exclusive-OR gates (43, 45), two AND-gates (47, 49) and a JK-flipflop (52) the measuring circuit (9) measures the mutual location of undelayed (at 11) and delayed (at 19) vertical synchronizing signals with respect to a signal (at 7) having a duty cycle of fifty percent and representing the horizontal synchronizing signals. As a result, unwanted irregularities in the selected vertical synchronizing signal can be avoided, thus making it usable for, inter alia, the synchronization of writing into a field memory.

REFERENCES:
patent: 4679080 (1987-07-01), Bashford et al.

Affiliated with

Also associated with

Rating

Television synchronizing signal pattern correction circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Television synchronizing signal pattern correction circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television synchronizing signal pattern correction circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1663749