Bi-phase decoder apparatus and method
US4167760A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1978 |
| Grant date | Sep 11, 1979 |
| Priority date | — |
| Expiry date | Mar 28, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1419
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The apparatus and method of this invention provides an improved decoder capable of decoding data that has been encoded in accordance with the Bi-phase or Manchester encoding rules, which encoded data may be transmitted over a data channel at varying and various rates. A phase-locked loop circuit, including a phase locked oscillator, phase comparator and missing signal level transition detector, forms an integral part of the decoder apparatus that functions to sample the incoming data at the proper time regardless of the rate of data transmission, and decode the data from the encoded data. Also, a clock signal indicative of the data transmission rate is decoded from the encoded data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.