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. 28, 1992
Filed:
Apr. 30, 1990
Ronald L Coburn, Fuquay-Varina, NC (US);
Charles R Hoffman, Raleigh, NC (US);
Philip H Sutterlin, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A high current CMOS circuit including a raised cosine signal generator for generating a raised cosine signal waveform and an input circuit arrangement for controlling the raised cosine signal generator is described. The raised cosine signal generator includes an output node to which a controlled chain of CMOS inverters are connected. The input circuit arrangement accepts an input signal, converts it into appropriate signals which drive respective inverters so that simultaneous conduction of inverter pairs is prevented. The off chip driver (OCD) minimizes ground bounce, electrical noise and radiation problems caused by large current transients or spikes (di/dt) that usually accompany such circuits.