System for realizing drive of EMCCD signal by transformer

A signal-driven, transformer technology, applied in the components of TV systems, image communication, color TV components, etc., can solve problems such as difficulty in implementation and high power consumption, reduce power consumption, reduce requirements, and achieve closed-loop control. Effect

Inactive Publication Date: 2012-01-11
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the existing driving method consumes a lot of power and is difficult to realize, the present invention provides a system for realizing EMCCD signal driving by a transformer

Method used

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  • System for realizing drive of EMCCD signal by transformer
  • System for realizing drive of EMCCD signal by transformer
  • System for realizing drive of EMCCD signal by transformer

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specific Embodiment approach 1

[0016] Specific implementation mode 1. Combination figure 1 and figure 2 Describe this embodiment mode, a transformer realizes the EMCCD signal driving system, the system includes a controller, an analog-to-digital conversion circuit, a MOSFET, an integrated driver, a first adjustable voltage regulator, a second adjustable voltage transformer, an amplitude calculation circuit, AC component extraction circuit, DC component extraction circuit, voltage division sampling circuit, DC level clamping circuit, high frequency transformer, adjustable inductance and adjustable resistance; the output end of the controller and the input end of the integrated driver, the first adjustable The input terminal of the voltage regulator and the input terminal of the second adjustable voltage regulator are connected, and the controller inputs the timing drive signal to the integrated driver, and according to the current gain requirement, respectively sends the first adjustable voltage regulator a...

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Abstract

The invention relates to the CCD driving technology, more particularly to a system for realizing drive of an EMCCD signal by a transformer. According to the invention, problems that a current driving method has high power and is difficult to be realized can be solved. An amplitude adjustment of an output signal of the system is carried out by changing a resistance value of a digital potentiometerin a first adjustable voltage transformer, so that an output voltage of the first adjustable voltage transformer is changed and thus a primary coil voltage of a high frequency transformer; therefore,a digital control on the output signal amplitude is realized; according to a digital parameter value received by the second adjustable transformer, a resistance value of a digital potentiometer in the second adjustable transformer is changed, thereby changing an output voltage value in a DC-DC boosted circuit; and a direct current polarization is provided for an RLC resonant circuit through a direct current level clamped circuit, so that the high and low levels of the output signal are still in a normal working range after the change of the amplitude value of the output signal each time. According to the invention, circuit power consumption and dependence on a high speed and high power device are substantially reduced.

Description

technical field [0001] The invention relates to a driving technology of a CCD, in particular to a system for realizing a high-speed and high-voltage driving signal of an EMCCD. Background technique [0002] When imaging a darker target, if the noise of the CCD's readout amplifier is relatively large, it will often cover up the useful signal, especially when the readout speed is high, and the readout noise will increase with the increase of the readout speed . With the continuous development of CCD manufacturing technology, the advent of EMCCD enables tiny signals to overcome the noise of the readout amplifier, and this type of CCD can obtain image quality similar to that of ICCD without any additional structure; EMCCD's The basic structure is roughly the same as the traditional frame transfer CCD, but hundreds of gain registers are added between the readout register and the sense amplifier. Its electrode structure is different from the transfer register, and the signal is g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/372H04N5/357
Inventor 余达徐东臧佳赵莹孔德柱刘金国郭永飞
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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