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.

Date of Patent:
Jul. 09, 2002

Filed:

Jan. 28, 1999
Applicant:
Inventors:

Noriaki Suyama, Kanagawa, JP;

Yasunori Okimura, Kanagawa, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 1/900 ;
U.S. Cl.
CPC ...
G11C 1/900 ;
Abstract

A bi-directional shift register comprises flip-flops connected to first switches and second switches. Third switches are connected in sequence and between the respective flip-flops. The third switches are on-off controlled in accordance with a CLK signal in order to periodically transition from low to high or from high to low. The shift register opens the second switches during the low duration of the REV signal and opens and closes the first switches in accordance with clocking of the CLK signal to shift data in the forward direction. The shift register opens the first switches during the high duration of the REV signal and opens and closes the second switches in accordance with the clocking of the CLK signal to shift data in the reverse direction.


Find Patent Forward Citations

Suyama, Noriaki. (2002). Bi-directional shift register having bi-directional shift function without deteriorating data with a reduced number of elements (U.S. Patent No. 6418182). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6418182

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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