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:
Aug. 01, 1989
Filed:
Feb. 16, 1988
Peter G Laws, Wiltshire, GB;
Plessey Overseas Limited, Iflord, GB;
Abstract
A Manchester code clock and data recovery system comprises an input means which receives an encoded input signal. Data integration and error integration devices are provided which receive modified versions of the input signal and produce signals for presentation to an error modulator. The modulator generates an error signal for controlling a phase lock loop circuit having a voltage controlled oscillator. A first output of the oscillator generates signals for controlling the data integration device over a full bit period, and for controlling the error integration device over a half bit period, in a manner that permits the clock signal to be recovered from the first output of the oscillator, and the data to be recovered from the data integration device which is arranged to generate a Manchester biphase coded signal.