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.
Patent No.:
Date of Patent:
May. 24, 1994
Filed:
Nov. 03, 1992
Hiroaki Satou, Minoo, JP;
Tsutomu Muraji, Ikoma, JP;
Matsushita Electric Industrial Co. Ltd., Osaka, JP;
Abstract
A gamma correction and white balance adjustment device has a calculator for calculating brightness target values expected to produce on a screen in response to calculated input signals to be applied to a CRT. The calculated input signals are actually applied to the CRT and the actual brightness values observed on the screen are measured. A table of a list of the calculated input signals expected to produce the brightness target values and a corresponding list of measured input signals which actually produced the calculated brightness target values is formed. An amplitude conversion circuit is provided for converting the amplitude of the input signal, which is equal to the calculated input signal, to that of the measured input signal in accordance with the obtained table.