Synchronizing signal detecting circuit in a digital signal trans

Details Synchronizing signal detecting circuit in a digital signal trans Synchronizing signal detecting circuit in a digital signal trans

1984-05-29

1986-06-24

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

370100, 375106, 375113, 375116, H04L 700

Patent

active

045969817

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.

REFERENCES:
patent: 3586776 (1971-06-01), Salava
patent: 4214124 (1980-07-01), Jarus
patent: 4356566 (1982-10-01), Wada et al.
patent: 4414677 (1983-11-01), Ive et al.

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