Vertical driving pulse generating circuit

Details Vertical driving pulse generating circuit Vertical driving pulse generating circuit

1987-06-19

1989-07-04

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358148, H04N 504

Patent

active

048455636

ABSTRACT:
A reset pulse having a desired pulse width is generated in a reset pulse generating circuit 14 in response to a vertical synchronizing signal selected and outputted from input selecting circuit 13 or a frequency-divided output signal of a vertical count down circuit 11, the vertical count down circuit 11 is reset by the reset pulse, and a vertical driving pulse .phi..sub.5 with a predetermined period is generated. Furthermore, phases of the reset pulse and the frequency-divided output signal are compared in a phase comparing circuit 19, a period of a vertical synchronizing signal is determined, and the input selecting circuit 13 and a signal selecting circuit 18 are switched to each other in accordance with the result.

REFERENCES:
patent: 4231064 (1980-10-01), Uchida

Affiliated with

Also associated with

Rating

Vertical driving pulse generating 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 Vertical driving pulse generating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vertical driving pulse generating circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-856691