Phase decoder

Details Phase decoder Phase decoder

1978-11-09

1980-02-12

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

360 42, H03K 1324

Patent

active

041886208

ABSTRACT:
The binary value of coded signals having opposite going transitions normally in the center of a bit cell, wherein the direction of the transition determines the binary value of the bit cell, is detected. The repetition rate of bit cells of a coded signal control the rate which a signal to be integrated is accumulated by an integrator. The integration duration is controlled by the length of the bit cell. The direction of integration is controlled by the direction of the center transition of each bit cell. In response to the amplitude of the accumulated signal at the end of the integration duration being greater or less than a reference amplitude, the binary value of the bit in the bit cell is determined. Integration is performed by first and second integrators respectively activated to accumulate the signal to be integrated during odd and even numbered bit cells. The first and second integrators are reset to zero during even and odd numbered bit cells, respectively. The accumulated signals of the first and second integrators are sensed prior to resetting thereof to indicate the binary values of the odd and even numbered bit cells.

REFERENCES:
patent: 3361978 (1968-01-01), Fiorini
patent: 3699554 (1972-10-01), Jones
patent: 3789207 (1974-01-01), Jones
patent: 3818501 (1974-06-01), Fiorino
patent: 3864583 (1975-02-01), Fiorino
patent: 3877027 (1975-04-01), Marino

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