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:
Jan. 10, 1978
Filed:
Oct. 22, 1976
William B Nelligan, Danbury, CT (US);
Schlumberger Technology Corporation, New York, NY (US);
Abstract
Methods and apparatus are disclosed for selecting, among input signals, those which are time-spaced from each other by more than a predetermined time interval. Clock pulses are continuously applied to a pulse counter, and a predetermined count signal is produced each time the counter reaches a predetermined count. The counter is reset upon occurrence of either an input signal or a predetermined count signal. The order of occurrence of the input signals and of the predetermined count signals is memorized, and a validation signal is produced for each input signal which is directly preceded and followed by a predetermined count signal. Signals distorted by pile-up effect can thus be rejected.