Method and apparatus for converting frequency signals representi

Details Method and apparatus for converting frequency signals representi Method and apparatus for converting frequency signals representi

1984-12-31

1987-01-13

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Signal receiver

34082573, 340347AD, 379 97, H04M 126

Patent

active

046365907

ABSTRACT:
A frequency analyzing circuit for converting multifrequencies representing characters into selected signals for writing data into a plurality of channels adapted to effect enabling and disabling signals to a counter having an output code in binary form. Each of the channels is connected to a corresponding selected signal output of the frequency analyzing circuit from which the channel records a signal corresponding to a selected character.
A plurality of gates is provided in each channel. The selected data signal read by a channel produces a logic in the gates which activate an enabling output voltage from the channel circuitry which is responsive to the enabling voltage to generate the selected character in binary code and to latch when the binary code character is generated. The enabling output voltage from the actuated channel also generates a sequential pulsing to said channels which when applied to activated channel produces a logic in the gates which deactivates the output voltage and results in the latching of the selected character in binary code.

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patent: 4469915 (1984-09-01), Lax

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