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:
Sep. 21, 1982
Filed:
Oct. 29, 1979
Kamilo Feher, Ottawa, CA;
Canadian Patents & Dev. Limited, Ontario, CA;
Abstract
The jitter determining apparatus uses only a jittery clock signal of period T.sub.b recovered from the received data signal to determine peak to peak jitter J.sub.pp and jitter distribution. The apparatus includes an AND gate having a pair of inputs. The inputs are coupled to a first signal which is the jittery clock signal delayed by a fixed amount nT.sub.b where n is preferably greater than 5, and to a second signal which is a jittery pulse signal generated from the jittery clock signal. The second signal is also controllably delayed by a factor greater than twice the jitter J.sub.pp. The AND gate produces output pulses when coincidence occurs between the two signals as the delay of the second signal is selectively varied. A counter counts the pulses for each selected delay position and thus provides the peak to peak time jitter J.sub.pp of the clock signal.