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:
Aug. 16, 1994
Filed:
Feb. 17, 1993
Shigekatsu Tagami, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A tone correcting apparatus for an image display apparatus is disclosed. The apparatus includes a test signal generating circuit for generating a test signal, a memory for outputting tone correction data depending upon the test signal, a modulating circuit for modulating the light from a light source depending upon the tone correction data, a detecting circuit for detecting the modulated light from the modulated circuit, and a control circuit for calculating correction data depending upon a detected signal output from the detecting circuit. The correction data is stored in memory. Also disclosed is a laser display apparatus in which a laser beam is modulated according to a video signal before being displayed. An synchronizing separating circuit separates a synchronizing signal from the video signal. A selecting circuit selects between a test signal generated by a test signal generating circuit and the video signal depending upon the synchronization signal. A memory outputs corresponding tone correction data depending upon the signal selected.