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. 03, 1996
Filed:
Jun. 02, 1995
Floyd W Olsen, St. Athens, PA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A pulse width measurement circuit is provided, comprising (i) a comparator circuit for receiving a pulse, the time duration of which is to be measured, and for activating a pulse present signal in response to the received pulse; (ii) a counter for counting in response to the pulse present signal and for outputting a pulse count representing the duration of the received pulse; and (iii) a reset circuit for issuing a reset signal in response to a leading edge of the pulse present signal and for automatically resetting the counter to a base count in response to the leading edge of the pulse present signal. The comparator circuit is implemented in ECL circuitry and the counter is implemented in TTL circuitry. An ECL-to-TTL conversion circuit is disposed between the comparator circuit and the counter. The reset circuit includes a counter delay circuit for delaying the resetting of the counter for a predetermined time in response to the leading edge of the pulse present signal. A latch is clocked to store the contents of the counter in response to the trailing edge of the pulse present signal.