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. 28, 1993
Filed:
Sep. 01, 1992
David W Boerstler, Millbrook, NY (US);
Edward B Eichelberger, Hyde Park, NY (US);
Gary T Hendrickson, Kingston, NY (US);
Charles B Winn, Hyde Park, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A compensating upshift circuit providing low signal degradation and operating at high speed and at low power. Capacitor shunted diodes cross-couple the collectors and bases of two transistors. The cross-coupling eliminates signal swing degradation in the upshift circuit and controls current through the two collector resistors. Equalized collector resistor current eliminates signal swing degradation while providing an upshift circuit with short delays. The capacitor shunted diodes can be replaced by diode connected transistors configured to provide the necessary collector-base capacitance.