Pulse width modulation circuit of programmable subframe system

Details Pulse width modulation circuit of programmable subframe system Pulse width modulation circuit of programmable subframe system

1990-08-29

1991-12-03

Mis, David

Modulators

Pulse or interrupted continuous wave modulator

Pulse width modulator

332106, H03K 708

Patent

active

050703129

ABSTRACT:
A PWM circuit of programmable subframe system includes a control circuit 20 for generating control signals Cm-CO according to the number of subframes, a PWM data register 60 for storing PWM data, a comparison/correction circuit 40 for determining the sequence of connections of the counter and then comparing the value of a counter 30 with the value of the register 60 to generator overflows under the control of the control signals and also simultaneously generate correction signals, a counter 30 for determining the seqence of connections by the circuit 40 and counting-up to return th e overflows to the circuit 40, a CMP OR Gate 70 for OR operating the correction signals generated in the circuit 40, a modulator 50 for setting and resetting the output and giving correction output.

REFERENCES:
patent: 4567468 (1986-01-01), Tanaka

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