Image display system based on triode common emitter symmetrical amplification circuit
A technique for amplifying circuits and image display, which is applied to components of TV systems, image communication, and color TV components, etc. It can solve problems such as unclear image display, and achieve stable display frequency, high security, and clear image display Effect
Inactive Publication Date: 2015-09-02
CHENGDU CHUANGTU TECH
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the defect of unclear image display in the current image display system and provide an image display system based on triode common emitter symmetrical amplifier circuit
Method used
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[0018] Such as figure 1 As shown, the present invention includes an image acquisition module, a signal processing circuit connected to the image acquisition module, a constant current source circuit connected to the signal processing circuit, a phase-locked loop circuit connected to the constant current source circuit, and a phase-locked loop The image recognition circuit connected with the circuit, in order to achieve the purpose of the present invention, the present invention also has a triode common-emitter symmetrical amplifier circuit connected in series between the constant current source circuit and the image recognition circuit.
[0019] Wherein, the triode common-emitter symmetrical amplifier circuit is the key point of the present invention, and it is composed of triode Q6, triode Q7, diode D1, diode D2, diode D3, diode D4, diode D5, polar capacitor C9, polar capacitor C10, Composed of resistor R17, resistor R18, resistor R19 and resistor R20.
[0020] The N pole of...
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The invention discloses a stable-frequency image display system. The system mainly comprises an image acquiring module, a signal processing circuit connected with the image acquiring module, a constant current source circuit connected with the signal processing circuit and an image recognizing circuit and is characterized by further comprising a phase-locked loop circuit arranged between the constant current source circuit and the image recognizing circuit, wherein the phase-locked loop circuit is composed of a triode Q2, a triode Q3, a triode Q4, a capacitor C4, a resistor R6, a capacitor C5 and the like, the positive electrode of the capacitor C4 is connected with the constant current source circuit, the negative electrode of the capacitor C4 is connected with the base of the triode Q2, one end of the resistor R6 is connected with the collector of the triode Q2, the other end of the resistor R6 is connected with the collector of the triode Q2 through a resistor R7 and a resistor R8, the negative electrode of the capacitor C5 is connected with the collector of the triode Q3 through a resistor R10 and a resistor R9 and the positive electrode of the capacitor C5 is connected with the emitter of the triode Q2. The system is provided with the lock-phased loop circuit which can make the display frequency of the image display system be more stable.
Description
technical field [0001] The invention relates to an image display system, in particular to an image display system based on a triode common-emitter symmetrical amplifying circuit. Background technique [0002] With the vigorous development of high technology, the face recognition system has been widely used as a human body password because of its convenience. In addition, intelligent management has entered people's social life now, and intelligent buildings have sprung up one after another to meet the needs of the information age. As a noble building and office environment, it must meet the current and future development needs functionally. Become a base for cultural and economic development. Therefore, the face recognition system has been applied to Daxia's access control recognition system, but the current face recognition system has the defect that the image display is not clear, which affects the recognition accuracy. Contents of the invention [0003] The object of t...
Claims
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IPC IPC(8): G06K9/00H04N5/14
CPCH04N5/148G06V40/166G06V10/12
Inventor 周云扬
Owner CHENGDU CHUANGTU TECH