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. 28, 1999
Filed:
Nov. 13, 1996
William A White, Garland, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
According to a broad aspect of the invention, an apparatus (34) for decoding a Manchester encoded data stream is provided. The apparatus includes a transition detector (45) for receiving the Manchester encoded data stream to produce a transition indicating output when a transition of the Manchester encoded data stream is detected. Also, a circuit (105) is provided to generate an output control pulse a predetermined time after the transition indicating output is produced. A sampling flip-flop (120) receives the Manchester encoded data stream, and is controlled by the output control pulse to output a state of the Manchester encoded data to an output control circuit (125) when the output control pulse is generated. In a preferred embodiment, the sampling flip-flop (125) operates to generate a binary NRZ form of the Manchester encoded data stream. The transition detector (45) may be configured to synchronize the transition indicating output with a pulse of a clock pulse stream, and also may include a phase selector to select either the first or second symbol of the Manchester data to the output of the apparatus.