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:
Mar. 19, 1985
Filed:
Jul. 15, 1982
Ian A Vance, Newport, GB;
Colin Jeffrey, Stansted Mountfitchet, GB;
Brian A Bidwell, Luton, GB;
David F Leevers, Harlow, GB;
Michael J Woodley, Hitchin, GB;
International Standard Electric Corporation, New York, NY (US);
Abstract
A method of synchronizing a digital radio pager receiver with incoming digital data signals. At switch-on the receiver first attains a 'course' bit synch during the first quarter-word period and then a 'fine' bit synch during the next half-word period. The receiver then examines incoming data bits to determine simultaneously (a) whether valid data is being received and (b) whether the incoming data contains a preamble sequence. If either determination is successful the incoming data is then examined to determine whether it contains a synchronizing word or an address word. The synchronization and address word determination is also carried out while bit synch is obtained and the valid data/preamble determination is effected.