Control circuit for displaying the same video simultaneously...

Details Control circuit for displaying the same video simultaneously... Control circuit for displaying the same video simultaneously...

2004-11-24

2008-10-21

Nguyen, Chanh (Department: 2629)

Computer graphics processing and selective visual display system

Plural display systems

C345S099000

Reexamination Certificate

active

07439936

ABSTRACT:
A display panel control circuit includes a voltage controlled oscillator (VCO) for outputting a clock signal, a first-panel horizontal system pulse generation section, a second-panel horizontal system pulse generation section, a vertical system pulse generation section which is commonly used among the first and second panels, a phase comparator, and a smoothing element. The first-panel horizontal system pulse generation section and the second-panel horizontal system pulse generation section respectively generate a reference signal of a first-panel horizontal system output group and a reference signal of a second-panel horizontal system output group from signal VCOCLK1output from the VCO. Thus, it is possible to simultaneously drive two different panels.

REFERENCES:
patent: 5018076 (1991-05-01), Johary et al.
patent: 6107984 (2000-08-01), Naka et al.
patent: 2004/0169618 (2004-09-01), Nakai et al.
patent: 2-137586 (1990-05-01), None

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