Optional operation control apparatus for monitor and control met

Details Optional operation control apparatus for monitor and control met Optional operation control apparatus for monitor and control met

1996-03-06

1999-09-07

Hsia, Sherrie

Television

Receiver circuitry

348705, 348706, 348734, 348565, H04N 544

Patent

active

059494972

ABSTRACT:
An improved optional operation control apparatus for a monitor and a control method thereof capable of controlling a function operation of an option card which is detected as being mounted therein after detecting whether a plurality of option cards are provided in the system, which includes a key input unit including a plurality of function keys; a microcomputer for judging whether a plurality of option cards are mounted in the system and for performing a corresponding function of an option card which is mounted therein in accordance with an input signal of the key input unit; a first and second switch unit, switched in accordance with a control of the microcomputer, for outputting a combined video signal outputted from an option card, of which its corresponding operation is performed, and a combined video signal inputted thereto through an external input terminal in accordance with a control of the microcomputer; and a signal processing unit for processing a combined video signal outputted from the first and second switch unit in accordance with a control of the microcomputer, outputting an audio signal to a speaker, and displaying a video signal on a color picture tube.

REFERENCES:
patent: 4337480 (1982-06-01), Bourassin et al.
patent: 5341175 (1994-08-01), Koz
patent: 5402183 (1995-03-01), Tanaka
patent: 5557675 (1996-09-01), Schupak
patent: 5563665 (1996-10-01), Chang

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