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. 31, 1985
Filed:
Apr. 09, 1984
Nippon Telegraph & Telephone Public Corporation, Tokyo, JP;
Abstract
In an apparatus for receiving a burst signal intensity-modulated by a signal obtained by Manchester-code converting each code of an input signal into a pair of codes, the received burst signal is converted by a partial response circuit into an AC signal and then AC-amplified. From the received burst signal is extracted a timing signal of the same frequency as the clock frequency of the Manchester-coded signal. In a decision circuit, the AC-amplified output is decided by the timing signal, through using a decision level close to zero, at the timing of each of former and latter codes of the Manchester-coded pair codes. A coding rule violation is detected in a plurality of successive decision output codes to detect a reception abnormality such as asynchronism and a signal collision. The decision output is decided at the timing of the latter one of the Manchester-coded pair codes, thereby regenerating transmitted information.