Sync signal self-test device and method

Details Sync signal self-test device and method Sync signal self-test device and method

1997-03-28

2000-03-14

Lee, Michael H.

Television

Monitoring, testing, or measuring

Synchronization

348181, 348569, 348510, 345213, H04N 504

Patent

active

060379782

ABSTRACT:
A sync signal self-test device includes: a pre-amplifier, for pre-amplifying red, green, and blue video signals from a computer system; a microprocessor, for checking the horizontal and vertical sync signal frequencies, and for controlling production of on screen display signals when the horizontal and vertical sync signal frequencies from the computer system are outside the operating range of the monitor, and for generating horizontal and vertical sync signals; an on screen display integrated element, for outputting, under the control of the microprocessor, error message signals in synchronization with control signals from the microprocessor; a buffer, for temporarily storing output signals from the on screen display integrated element; a mixing element, for mixing outputs of the pre-amplifier and the buffer; and a main amplifier, for amplifying the output of the mixing element for the picture tube.

REFERENCES:
patent: 4991023 (1991-02-01), Nicols
patent: 5103314 (1992-04-01), Keenan
patent: 5241281 (1993-08-01), Wilkes et al.
patent: 5247229 (1993-09-01), Ngo et al.
patent: 5394171 (1995-02-01), Rabii
patent: 5493317 (1996-02-01), Kim
patent: 5670972 (1997-09-01), Kim
patent: 5673087 (1997-09-01), Choi et al.
patent: 5757366 (1998-05-01), Suzuki
patent: 5844623 (1998-12-01), Iwamura

Affiliated with

Also associated with

Rating

Sync signal self-test device and method 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 signal self-test device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sync signal self-test device and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-174496