Horizontal synchronous circuits

Details Horizontal synchronous circuits Horizontal synchronous circuits

1996-12-03

1998-10-20

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327155, 331 11, 331 25, H03L 708

Patent

active

058252223

ABSTRACT:
A horizontal synchronous circuit comprises a horizontal oscillator, an AFC portion operative to compare in phase a horizontal oscillation output signal from the horizontal oscillator with a horizontal synchronizing signal from the outside to produce a comparison output signal and to supply the horizontal oscillator with a control signal based on the comparison output signal for controlling a frequency of the horizontal oscillation output signal, a free-running frequency controller operative to produce a control signal corresponding to a frequency of the horizontal synchronizing signal from the outside and to supply the horizontal oscillator with the control signal for controlling a free-running frequency of the horizontal oscillator to be coincident with the frequency of the horizontal synchronizing signal from the outside, and a negative feedback control portion operative to produce an additional control signal based on the comparison output signal obtained from the AFC portion or the control signal supplied to the horizontal oscillator and to control the free-running frequency of the horizontal oscillator to vary in response to the additional control signal.

REFERENCES:
patent: 4037165 (1977-07-01), Ogita
patent: 5347233 (1994-09-01), Ishibashi et al.
patent: 5563552 (1996-10-01), Gersbach et al.
patent: 5640126 (1997-06-01), Mellot

Affiliated with

Also associated with

Rating

Horizontal synchronous circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Horizontal synchronous circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Horizontal synchronous circuits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-248532