Burst signal receiving apparatus

Details Burst signal receiving apparatus Burst signal receiving apparatus

1984-04-09

1985-12-31

Bookbinder, Marc E.

Pulse or digital communications

Repeaters

Testing

375 18, 375 55, 375110, 455608, 455617, 455619, H04B 900, H04B 162

Patent

active

045625824

ABSTRACT:
In an apparatus for receiving a burst signal intensity-modulated by a signal obtained by Manchester-code converting each code of an input signal into a pair of codes, the received burst signal is converted by a partial response circuit into an AC signal and then AC-amplified. From the received burst signal is extracted a timing signal of the same frequency as the clock frequency of the Manchester-coded signal. In a decision circuit, the AC-amplified output is decided by the timing signal, through using a decision level close to zero, at the timing of each of former and latter codes of the Manchester-coded pair codes. A coding rule violation is detected in a plurality of successive decision output codes to detect a reception abnormality such as asynchronism and a signal collision. The decision output is decided at the timing of the latter one of the Manchester-coded pair codes, thereby regenerating transmitted information.

REFERENCES:
patent: 3241067 (1961-04-01), James et al.
patent: 3829779 (1974-08-01), Fujimoto
patent: 4276656 (1981-06-01), Petryk, Jr.
patent: 4355423 (1982-10-01), Theall

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