Drive apparatus for CCD image sensor
AssigneeSanyo Electric Co., Ltd.
InventorTakashi Tanimoto
Life of this patent
Estimating the term…
Abstract
A drive apparatus that guarantees the stable operation of a CCD image sensor. The drive apparatus includes a drive circuit for supplying a pulse signal to the CCD image sensor. A power supply circuit is connected to the drive circuit to supply the drive circuit with a voltage for generating the pulse signal. The power supply circuit includes an over-boosting circuit for temporarily over-boosting the voltage supplied to the drive circuit to generate an over-boosted voltage, prior to the charge transfer operation of the CCD image sensor.
Claims11
An apparatus for driving a CCD image sensor which performs charge transfer operation in accordance with a pulse signal, comprising:
- a drive circuit for supplying a pulse signal to the CCD image sensor;
- and
- a power supply circuit, connected to the drive circuit, for supplying the drive circuit with a voltage for generating the pulse signal, wherein the power supply circuit includes an over-boosting circuit for temporarily over-boosting the voltage supplied to the drive circuit to generate an over-boosted voltage exceeding a target control voltage for a predetermined time, prior to the charge transfer operation of the CCD image sensor.
An apparatus for driving a CCD image sensor which performs charge transfer operation in accordance with a pulse signal, comprising:
- a drive circuit for supplying a pulse signal to the CCD image sensor, and
- a power supply circuit, connected to the drive circuit, for supplying the drive circuit with a voltage for generating the pulse signal;
- and wherein the drive circuit and the power supply circuit are formed on a single semiconductor integrated circuit substrate, wherein the CCD image sensor generates an image sensor output signal every predetermined period in accordance with charges, and the power supply circuit is enabled when the image sensor stops generating image sensor output signals.
An apparatus for driving a CCD image sensor which performs charge transfer operation in accordance with a pulse signal, comprising:
- a drive circuit for supplying a pulse signal to the CCD image sensor, and
- a power supply circuit, connected to the drive circuit, for supplying the drive circuit with a voltage for generating the pulse signal;
- and
- a control circuit connected to the power supply circuit, for controlling the power supply circuit, wherein the drive circuit, the power supply circuit and the control circuit are formed on a single semiconductor integrated circuit substrate, wherein the CCD image sensor generates an image sensor output signal every predetermined period in accordance with charges, and wherein the control circuit enables the power supply circuit when the image sensor stops generating image sensor output signals.
Dependencies are inferred from the claim text.