Digital data detecting and synchronizing circuit
US5349610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1991 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Aug 6, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0331
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A circuit for detecting digital data has a data-changing point detecting circuit for detecting a changing point of the digital data at which a value indicative of the digital data is changed from value 1 to value 0, or value 0 to value 1; an asynchronous detecting circuit for judging whether or not the changing point is caused at a timing synchronized with the timing of the internal clock signal; an asynchronous counter for counting the number of asynchronizations; a synchronous signal generating counter for generating a synchronous signal by the internal clock signal; and a reset control circuit for controlling the timing of a reset operation of the synchronous signal generating counter in accordance with outputs of the data-changing point detecting circuit and the asynchronous counter. Another digital data detecting circuit and a method for detecting digital data are also shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.