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:
Sep. 18, 1990
Filed:
Aug. 28, 1985
Hiroshi Ushiki, Yokohama, JP;
Tetsuaki Iwasaki, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Tosbac Computer System Company Limited, Tokyo, JP;
Abstract
In an integrated circuit for arithmetic operation and display control connected to a power source (46) and a liquid crystal display device (45), and energized by the power source, including an arithmetic operation circuit (42) for performing a designated artithmetic operation, wherein the result of the arithmetic operation is displayed by the display device, a boosting circuit (43) receives and boosts the voltage from the power source (46), a drive circuit (44) is powered by the boosting circuit (43) to drive the liquid crystal display device (45), and a control circuit (41) causes interruption of the driving of the display device when the arithmetic operation circuit (42) is carrying out the arithmetic operation.