Synchronizing signal detecting circuit in a digital signal transmitting system
US4596981A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1984 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | May 29, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/048
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A synchronizing signal detecting circuit is used in a digital signal transmitting system which transmits a digital signal in which signals are time-sequentially multiplexed in terms of blocks, where each of the blocks are made up of digital data which are information signals subjected to a digital modulation, a synchronizing signal having a fixed pattern, and an error checking code arranged at a location separated from a location of the synchronizing signal by a predetermined number of bits. The synchronizing signal detecting circuit comprises a counter which is reset when a synchronizing signal detection output which has been discriminated as being correct by use of the error checking code is continuously obtained for N times, where N is a natural number greater than or equal to two.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.