Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Patent
1999-01-29
2000-12-12
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
348467, 348475, 348488, G09G 500, H04N 700, H04N 708, H04N 1166
Patent
active
061605433
ABSTRACT:
A transmission device for computer video signals. Computer video signals can be inputted into the transmission device for processing and to be transmitted by only three pairs of transmission line (Category 5 UTP) to a remote terminal, while still maintain the function of horizontal and vertical synchronism. The transmission device has a converter for converting the polarity of horizontal synchronous signal (Hsync) and vertical synchronous signal (Vsync) into a state pulse (STATE). The state pulse (STATE), a negative pulse for vertical synchronous signal (V), a negative pulse for horizontal synchronous signal (H) are then carried respectively on the red video signal (R), the green video signal (G), and the blue video signal (B) for transmitting to a receiver in the remote terminal. The receiver in the remote terminal has a color signal recovering circuit, a polarity mode recovering circuit, and a synchronous signal recovering circuit for abstracting the negative pulse for vertical synchronous signal (V), the state pulse (STATE), and the negative pulse for horizontal synchronous signal (H) from the red video signal (R), the green video signal (G), and the blue video signal (B), and to be recovered into the original horizontal synchronous signal (Hsync) and vertical synchronous signal (Vsync), for being inputted with those recovered red video signal (R), green video signal (G), the blue video signal (B) into the monitor of the remote terminal.
REFERENCES:
patent: 5537145 (1996-07-01), Miseli
patent: 5565897 (1996-10-01), Kikinis et al.
patent: 5668566 (1997-09-01), Yen
patent: 6072532 (2000-06-01), Chich et al.
Aten International Patent & Trademark Office
Dinh Duc Q.
Hjerpe Richard A.
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