Circuit for controlling the time duration of a signal

Details Circuit for controlling the time duration of a signal Circuit for controlling the time duration of a signal

2007-10-09

2007-10-09

Tan, Vibol (Department: 2819)

Oscillators

Ring oscillators

C331S034000, C331S074000, C331S075000, C331S17700V

Reexamination Certificate

active

11082136

ABSTRACT:
A circuit controls the pulse width of an output signal from a voltage controlled oscillator. The voltage controlled oscillator includes a ring oscillator comprising a plurality of series-connected inverters. In one embodiment a selector selects at least one output signal from an inverter in the plurality of series-connected inverters. An output circuit receives the selected output signal and a reference signal to provide a final output signal having a time duration proportional to the number of inverters between the inverters providing the reference signal and the output signal to the selection circuit.

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