Synchronous signal generator for the muse signal

Details Synchronous signal generator for the muse signal Synchronous signal generator for the muse signal

1990-11-30

1992-09-15

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358148, H04N 508, H04N 504

Patent

active

051482762

ABSTRACT:
A synchronous signal generator for use with the MUSE signal in the MUSE system which is a high definition television systems. A PLL circuit including a phase comparator and a voltage-controlled oscillator and a counter, is used to generate a system clock synchronized with an external clock. A frame synchronizing signal detected through a frame sychronization detection circuit from an inputted digital MUSE signal frame-resets the counter through a window circuit. The frame synchronization is established at an accuracy of a set range of the window circuit. Also, in this case, if the sychronization deviates on a clock by clock basis, a sampling phase error from a phase error computing circuit is monitored by a comparator circuit so that a deviation in the synchronization can be detected. When the synchronization deviates, by horizonally resetting the counter, the clock synchronization can be established. By effecting the three steps noted above, the synchronous signal generation for the digital MUSE signal can be properly achieved. Also, by combining an arrangement noted above with a conventional synchronous signal for an analog MUSE signal, a synchronous signal generator for both a digital MUSE signal and an analog MUSE signal can be provided.

REFERENCES:
patent: 4769704 (1988-09-01), Hirai et al.
patent: 4958228 (1990-09-01), Kutsuki
patent: 4974081 (1990-11-01), Yokogawa
patent: 5008751 (1991-04-01), Wischermann et al.

Affiliated with

Also associated with

Rating

Synchronous signal generator for the muse signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-740860