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. 04, 1991

Filed:

Jul. 05, 1989
Applicant:
Inventor:

Kwang-Seok Kim, Suwon, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358168 ; 358169 ;
Abstract

The invention provides an automatic brightness limiter having an amplification means to amplify the video signal and applying the image signal at the next stage and a contrast adjustment means to adjust the contrast of a screen through active components, the device comprising; control means which controls automatically the image signal level and the contrast of the CRT by controlling the outputs of the amplification means and the contrast adjustment means using a high voltage applied to an anode through control components, and lied between the amplification means and the contrast adjustment means. Improving the capacity of the brightness adjustment for the screen of the automatic brightness limiter may be attained according to the present invention.


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