Manchester code decoding apparatus

Details Manchester code decoding apparatus Manchester code decoding apparatus

1980-06-02

1982-02-23

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

329104, 360 40, 360 44, H03K 13175

Patent

active

043172113

ABSTRACT:
An apparatus for decoding a Manchester encoded waveform is described in wh a gating circuit responds to the mid-cell transitions in the encoded waveform to produce an enabling signal which causes a clock circuit to generate high frequency clock pulses. A programmable counter accumulates the generated clock pulses. If the counter exceeds a clock count threshold set by a multiposition switch before the beginning of the following enabling signal, it causes a storage element to sample the encoded waveform and store the sample to provide an output signal representing decoded data. A second, substantially equivalent circuit decodes timing from the encoded waveform. The multiposition switch provides the apparatus with the capability to decode encoded waveforms of varying frequency.

REFERENCES:
patent: 4167760 (1979-09-01), Decker
patent: 4260952 (1981-04-01), Thomas

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