Television – Synchronization – Locking of computer to video timebase
Patent
1997-05-09
2000-03-14
Peng, John K.
Television
Synchronization
Locking of computer to video timebase
348500, 348525, 348521, 348516, 348542, 348554, 345213, H04N 504
Patent
active
060379944
ABSTRACT:
A sync signal processing device for a combined video appliance capable of directly processing a personal computer (PC) signal through a television (TV) receiver circuit to achieve the horizontal and vertical driving and deflection. The device can prevent the vertical trembling phenomena of the displayed picture and on-screen display by compensating for the sync frequency difference between the PC signal and the TV signal. According to the devices either a TV sync signal or a PC sync signal is selected in accordance with a selected TV/PC mode after the PC sync signal is frequency-converted and the selected PC sync signal is processed through the TV sync signal processing circuit. Either the horizontal driving pulse signal form the TV sync signal processing circuit or the horizontal driving pulse signal produced from a separate horizontal oscillation circuit is selected and outputted to a horizontal output circuit in accordance with the selected TV/PC mode.
REFERENCES:
patent: 4425581 (1984-01-01), Schweppe et al.
patent: 4464679 (1984-08-01), Wargo
patent: 4554582 (1985-11-01), Wine
patent: 4631585 (1986-12-01), Wine
patent: 4670774 (1987-06-01), Tokui
patent: 4670785 (1987-06-01), Medin
patent: 4684987 (1987-08-01), Tsutsui
patent: 4896214 (1990-01-01), Dieterle et al.
patent: 5068732 (1991-11-01), Satoh
patent: 5394171 (1995-02-01), Rabii
patent: 5469220 (1995-11-01), Kumada
patent: 5486869 (1996-01-01), Cooper
patent: 5502503 (1996-03-01), Koz
patent: 5526055 (1996-06-01), Zhang et al.
patent: 5550594 (1996-08-01), Cooper et al.
patent: 5610663 (1997-03-01), Nan et al.
patent: 5754250 (1998-05-01), Cooper
patent: 5808692 (1998-09-01), Lee
patent: 5812204 (1998-09-01), Baker et al.
Desir Jean W.
LG Electronics Inc.
Peng John K.
LandOfFree
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