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:
Jun. 28, 1977
Filed:
Aug. 14, 1975
Maurice Leon Jezo, Cedar Grove, NJ (US);
International Telephone and Telegraph Corporation, Nutley, NJ (US);
Abstract
This relates to a method and apparatus for extracting identity information from a Tacan signal which occurs during a 5 second interval every 37.5 seconds. The identity information consists of marks and spaces wherein a mark comprises a predetermined number of adjacent group reference signals, each having therebetween a plurality of regularly spaced Tacan pulse pairs. The Tacan signal is sampled at regular intervals following each group reference signals by means of a gating arrangement. A first counter counts the number of coincidences between pulse pairs and gates generated by the gating arrangement. A second counter counts the total number of gates generated and when the ratio of the number of coincidences to the total number of gates reaches a preset threshold, a mark counter is incremented. When the ratio of the contents of the mark counter to the total number of group reference signals reaches a preset value, a mark is declared. If a preset number of intervals between group reference signals occur which do not meet the requirements of a mark, a space is declared.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile