Image pick-up apparatus

Details Image pick-up apparatus Image pick-up apparatus

2005-02-15

2005-02-15

Ho, Tuan (Department: 2615)

Television

Camera, system and detail

Solid-state image sensor

C348S372000

Reexamination Certificate

active

06856352

ABSTRACT:
An image pick-up apparatus including a CCD1generating an image signal, a timing generator6generating various kinds of timing signals for controlling operation timings of CCD, a V driver30generating various kinds of driving signals for driving CCU in response to the timing signals, a power supply circuit31generating a power supply voltage VDDapplied to the timing generator and V driver, and a CPU8controlling an application of the power supply voltage to the timing generator6and V driver30and controlling the operation of the timing generator. The CPU8has a first operation mode, in which the timing generator is set into a standby mode such that a leak current from the timing generator to the V driver is avoided when the power supply Voltage is not applied to the V driver, and a second operation mode, in which the timing generator is set into a normal operating condition after the power supply voltage has been applied to the V driver. It is no longer necessary to provide a buffer at an input of the V driver30, and the leak current can be effectively avoided without increasing a cost of the apparatus.

REFERENCES:
patent: 5748340 (1998-05-01), Shimizu
patent: 5767904 (1998-06-01), Miyake
patent: 3-195331 (1991-08-01), None

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