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:
Apr. 23, 2002
Filed:
Apr. 21, 2000
Applicant:
Inventor:
Chris J. Rebeor, Fairfax, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 3/356 ;
U.S. Cl.
CPC ...
H03K 3/356 ;
Abstract
A latch device having a selectable feedback path includes a retaining device and system isolation device. The retaining device retains within the feedback path a logical value to be written out. The logical value is latched during an active clock signal. The system isolation device disconnects the retaining device from the feedback path during a write operation. Then, when the logical value is written out, the system isolation device reconnects the retaining device. Thus, the feedback path of the latch device may be disconnected to allow for a change in the latch state without overdriving a feedback inverter.