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:
Dec. 16, 1986
Filed:
Jul. 24, 1984
Applicant:
Inventors:
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
377 81 ; 377 72 ; 377 73 ; 377 75 ; 377 76 ; 377 80 ; 377107 ;
Abstract
A serial input/output device includes a CMOS shift register having a plurality of D-type flip-flops. A detection circuit is associated with the CMOS shift register in order to detect whether the transfer data exists in the CMOS shift register. A gate circuit is provided for applying a transfer clock signal to the CMOS shift register only when the transfer data exists in the CMOS shift register, thereby minimizing the power consumption.