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:
Jan. 10, 2006

Filed:

Sep. 27, 2002
Applicants:

Anthony M. Hill, Dallas, TX (US);

Richard D. Simpson, Bedford, GB;

Inventors:

Anthony M. Hill, Dallas, TX (US);

Richard D. Simpson, Bedford, GB;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/28 (2006.01); G06F 13/38 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a scannable D master-slave flip-flop circuit with synchronous preset or clear capability, the output of the slave latch is gated with the scan-enable signal to form the scan-data-output signal. This output gating of the scan-output data that allows for considerable simplification of the input logic. This simplification also provides for the reduction in both the size and the number of transistors in the input logic. This in turn is multiplied many tens of thousands of times in a complex processor chip, resulting in a substantial reduction in chip power and silicon area usage.


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