The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 02, 1998

Filed:

Oct. 03, 1996
Applicant:
Inventor:

Bong-Soon Kang, Seoul, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348558 ; 348604 ; 348663 ;
Abstract

An apparatus and method for converting a video signal output from a composite video instrument, by which the operating state of a system or the manufacturing state of a system board can be easily recognized, is disclosed. When a normal video signal is not input, a monochrome/color signal component is output to be displayed on a screen. The monochrome/color signal component has either a value internally set by a system, or a value set in accordance with externally supplied data to then be displayed on a screen. The apparatus includes a monochrome/color signal separator for receiving a quantized composite video signal and separating a monochrome signal component and a color signal component, a color signal demodulator for separating a color component from the color signal component output from the monochrome/color signal separator, a lock detector for detecting whether a signal input to the color signal demodulator or a signal output therefrom is normal, a color signal controller for multiplexing the color signal component output from the color signal demodulator and the variably set color signal component, and a monochrome signal controller for multiplexing the monochrome signal component output from the monochrome/color signal separator and the variably set monochrome signal component.


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