Method and apparatus for synchronizing a plurality of television

Details Method and apparatus for synchronizing a plurality of television Method and apparatus for synchronizing a plurality of television

1984-03-12

1986-10-21

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358139, 358149, H04N 1704, H04N 5073

Patent

active

046188800

ABSTRACT:
When the output of a number of color television signal generators is to be combined, all of these outputs must be correctly timed with respect to one another. To accomplish this, the output of a signal generator is applied to a phase-adjusting device and then to a sync separator. Horizontal synchronization pulses and/or color bursts are separated from the signal and applied to a switcher which alternately supplies these synchronization signals and reference synchronization signals to an adder circuit. The other input of the adder receives the incoming signal without the synchronization signals to be timed. The output of the adder is thus the incoming television signal, but with reference synchronization pulses substituted for its synchronization pulses half the time. The output of the adder is then applied to a monitor. The display on the monitor has a distinct flicker when the synchronization pulses of the incoming signal are not in phase with the reference synchronization pulses. An operator then removes the flicker by adjusting the phase-adjusting device. If the switches controlled by an oscillator having a randomly varying frequency, the display on the monitor will be scrambled and the phase will be adjusted to unscramble the picture.

REFERENCES:
patent: 4388637 (1983-06-01), Blair
patent: 4454530 (1984-06-01), Yoshinaka
patent: 4532547 (1985-07-01), Bennett

Affiliated with

Also associated with

Rating

Method and apparatus for synchronizing a plurality of television does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for synchronizing a plurality of television, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for synchronizing a plurality of television will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1292542