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. 23, 1990
Filed:
Nov. 25, 1988
Masao Kawamura, Tokyo, JP;
Minoru Usui, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
In a signal electrode drive circuit of an image display apparatus, the latch pulses are sequentially shifted for a plurality of latch circuits so as to sequentially latch the digital image data, and the signal electrode of the dot-matrix type display panel is driven by the signal having a plurality of gradation, based upon the digital image data latched in the latch circuits. The image input data are alternately read out via the buffer circuits by two-phase clock pulses, the input data are transferred to the latch circuits in response to the two-phase clock pulses, and, as a consequence, image data of higher transfer frequency can be satisfactorily processed.