Sync vector generator for composite vectorscopes

Details Sync vector generator for composite vectorscopes Sync vector generator for composite vectorscopes

1990-11-26

1992-12-15

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 10, 358158, H04N 1702

Patent

active

051722291

ABSTRACT:
A sync vector generator for a composite vectorscope generates a gate from the horizontal sync pulses of a video input signal as a function of a reference signal selected from either the video input signal or an external reference signal. The gate width is equal to an integer multiple of cycles of the subcarrier frequency for the video input signal. A high-Q resonant tank circuit tuned to the subcarrier frequency is activated by the gate to produce a burst signal having a frequency equal to the subcarrier frequency and having a number of cycles equal to the integer multiple. The burst signal is input together with quadrature subcarrier frequency components to the demodulators of a conventional vectorscope to produce an output display that is a measure of horizontal sync jitter and instantaneous SC/H phase.

REFERENCES:
patent: 4470064 (1984-09-01), Michener
patent: 4788585 (1988-11-01), Suzuki
patent: 4881121 (1989-11-01), Judge
patent: 5010403 (1991-04-01), Wardzala

Affiliated with

Also associated with

Rating

Sync vector generator for composite vectorscopes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sync vector generator for composite vectorscopes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sync vector generator for composite vectorscopes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2097984