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:
Oct. 25, 1994
Filed:
Apr. 03, 1992
Applicant:
Inventor:
Il K Na, Anyang, KR;
Assignee:
Samsung Electronics Co., Ltd., Kyunggi, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ; H04N / ;
U.S. Cl.
CPC ...
364550 ; 348178 ; 348189 ;
Abstract
A test pattern generating apparatus and method of a frequency converter in a VCR, in which an on-screen display (OSD) circuit is used to output a test pattern instead of using an internal test pattern generator. The apparatus includes a microprocessor for outputting data, clock, and strobe signals to the OSD circuit in response to the operation of a test switch, video and audio muting circuits for muting the video and audio signals input signals to the frequency converter in response to the operation of the test switch, and the OSD circuit for generating the test pattern in accordance with an output of the microprocessor.