Method and circuit for adjusting horizontal video size using a m

Details Method and circuit for adjusting horizontal video size using a m Method and circuit for adjusting horizontal video size using a m

1996-12-20

1998-11-03

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

348747, 348581, H01J 2956

Patent

active

058313982

ABSTRACT:
A horizontal size adjustment circuit and method and for use with a monitor that includes a microcomputer for receiving a horizontal size adjustment signal, a horizontal synchronizing signal and a feedback signal from a horizontal output circuit, and for producing a digital pulse width modulated signal at its output terminal; a current amplifier for amplifying the amplitude of the digital pulse width modulated signal output from the microcomputer so as to drive a switching transformer and a horizontal output circuit for generating a variably controlled horizontal size signal.

REFERENCES:
patent: 4318036 (1982-03-01), Bart et al.
patent: 4385263 (1983-05-01), Luz et al.
patent: 4633146 (1986-12-01), Babcock
patent: 4926098 (1990-05-01), Tarrillo
patent: 5021719 (1991-06-01), Arai et al.
patent: 5059874 (1991-10-01), Oliver
patent: 5113122 (1992-05-01), Bando et al.
patent: 5504521 (1996-04-01), Webb et al.

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