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Special three-level drive circuit for CCD

A drive circuit, three-level technology, applied in the direction of logic circuit coupling/interface, logic circuit connection/interface layout using field effect transistors, etc. Effect

Inactive Publication Date: 2014-01-29
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a special three-level driving circuit for CCD, which can generate a three-level signal of a CCD sensor with a stable amplitude, so as to solve the problem that the existing three-level signal driving design scheme of a CCD image sensor is relatively complicated.

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Embodiment Construction

[0024] The present invention provides a special three-level driving circuit for CCD, including a first driver, a second driver, and a triode; both the first driver and the second driver include a VDD terminal, a GND terminal, a signal input terminal and a signal output terminal; the The driving circuit has two input terminals and one output terminal, the two input terminals of the driving circuit are respectively the first input terminal and the second input terminal, the first input terminal is connected to the signal input terminal of the first driver, and the second input terminal is connected to the signal input terminal of the first driver. The bases of the transistors are connected, and the signal output terminal of the second driver is used as the output terminal of the driving circuit.

[0025] The VDD end of the first driver is connected to the positive pole of the first power supply, the GND end of the first driver is grounded, and the signal output end of the first d...

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Abstract

The invention provides a special three-level drive circuit for a CCD. The special three-level drive circuit for the CCD solves the problem that an existing three-level signal drive design scheme of a CCD image sensor is complex. The drive circuit comprises a first driver, a second driver and a triode. Both the first driver and the second driver comprise VDD ends, GND ends, signal input ends and signal output ends. The drive circuit is provided with two input ends and one output end. The two input ends of the drive circuit are the first input end and the second input end respectively. The first input end is connected with the signal input end of the first driver, and the second input end is connected with the base electrode of the triode. The signal output end of the second driver serves as the output end of the drive circuit. The special three-level drive circuit for the CCD can generate CCD sensor three-level signals of which the amplitude is stable.

Description

technical field [0001] The invention is used to generate a frame transfer signal of a CCD image sensor, relates to a design of a three-level driving circuit based on a CCD image sensor, and in particular relates to a special three-level driving circuit for a CCD. Background technique [0002] Some CCD image sensors require frame transfer signals such as figure 1 As shown, but there is no dedicated driver chip for generating three-level signals on the market, which needs to be designed by the user. At present, engineers who design driving circuits for three-level signals have designed many excellent schemes, but these design schemes are relatively complicated, so a simple three-level driving circuit design scheme is needed. Contents of the invention [0003] The invention provides a special three-level driving circuit for CCD, which can generate a three-level signal of a CCD sensor with stable amplitude, so as to solve the problem that the existing three-level signal drivi...

Claims

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Application Information

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IPC IPC(8): H03K19/0185
Inventor 李大伟井峰杨晓许韩俊锋魏宇张欣
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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