Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1992-01-29
1993-11-02
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 29, 358 27, 358 10, 358 41, H04N 964
Patent
active
052588270
ABSTRACT:
An apparatus for adjusting video signal gain includes a comparator receiving G color signals on a first input terminal and a selected one or R color and B color signals on a second input terminal, a microcomputer receiving the output of the comparator for generating control and indication signals and a display device for receiving the indication signals from the microcomputer for providing pedestal level and gain adjustment status indications. According to one aspect of the invention, a lens is opened or closed based on control signals generated by the microcomputer so as to prepare the apparatus for pedestal level and gain adjustment. A method for performing preparatory and adjusting steps for each of the R color and B color signals is also disclosed. According to the present invention, the gain adjustment can be carried out simply and conveniently without requiring a separate apparatus.
REFERENCES:
patent: 4499488 (1985-02-01), White
patent: 4608593 (1986-08-01), Miyaji
patent: 4712187 (1987-12-01), Tamura
patent: 5200813 (1993-04-01), Jeon
Groody James J.
Hsia Sherrie
Samsung Electronics Co,. Ltd.
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