Accession Number:

ADD009400

Title:

Manchester Code Decoding Apparatus.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1982-02-23

Pagination or Media Count:

9.0

Abstract:

An apparatus for decoding a Manchester encoded waveform is described in which 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.

Subject Categories:

  • Electrical and Electronic Equipment
  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE