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:
Mar. 11, 1986
Filed:
Jul. 08, 1983
Gerard J Ashton, Hopewell Junction, NY (US);
Emilio Colao, Poughkeepsie, NY (US);
Joseph R Cavaliere, Hopewell Junction, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A network composed of a plurality of compensated current switch emitter-follower logic circuits and a generator of a current source control potential for the current sources of the logic circuits in which a symmetrical relationship between UP and DOWN logic levels is maintained at all times. A logic level tracking signal which tracks changes in the UP and DOWN logic levels in the logic circuits is produced by simulating at least a portion of one of the logic circuits. The logic level tracking signal is compared with the reference potential used for the logic levels, preferably ground, by a differential amplifier. The output of the differential amplifier is buffered and suitably level shifted to produce the current source control potential. The current source control potential is applied from the single control potential generator to each of the logic circuits. The control potential is also applied to the control input of a current source portion of the simulating circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile