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. 01, 1996
Filed:
May. 03, 1994
Susumu Shimoyanagida, Kyoto-fu, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention tests the operation of a CRT X-ray protector circuit without applying an abnormally high voltage to the CRT. In addition to a first reference voltage corresponding to the detected voltage which is the standard for the operation of the X-ray protector for use in a display device with the CRT, a second reference voltage set at a value lower than the first reference voltage and higher than 0 V is provided to enable the operation of the X-ray protector circuit by comparing the detected voltage with the second reference voltage at the time of testing the X-ray protector circuit's operation. A third reference voltage, higher than the first reference voltage, is compared to the detected voltage during channel switching or external input switching to prevent erroneous activation of the x-ray protector.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile