Light-controlled oscillator

Details Light-controlled oscillator Light-controlled oscillator

2006-06-06

2006-06-06

Kinkead, Arnold (Department: 2817)

Oscillators

With device responsive to external physical condition

Temperature or light responsive

C331S17700V, C331S034000, C331S179000, C332S117000, C332S119000

Reexamination Certificate

active

07057467

ABSTRACT:
A light-controlled oscillator includes a circuit device, a detection circuit and a control circuit. The circuit device changes its characteristics when light is applied, so that a frequency of the oscillation shifts. The detection circuit detects a change of the characteristics caused according to the applied light. The control circuit controls an operation of the oscillator to increase a shift of the frequency of the oscillation according to the change of the characteristics. The oscillation frequency can be shifted by a desired amount only by detecting a change of characteristics based on a condition of the light, even when the intensity of the light is small.

REFERENCES:
patent: 5821825 (1998-10-01), Kobayashi
patent: A-H11-298034 (1999-10-01), None
patent: A-2001-111498 (2001-04-01), None

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