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Signal drive circuit

A signal drive and circuit technology, applied in instruments, static indicators, etc., can solve the problems of constraints, single drive voltage range, difficult procurement, etc., and achieve the effect of improving accuracy and stability, and convenient and reliable signal drive control.

Active Publication Date: 2013-04-24
中航华东光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic AMLCD drive circuits use packaged chips provided by foreign countries. This method is severely restricted by foreign countries, and it is difficult to purchase. Moreover, the driving voltage range is a single fixed value, which is only suitable for a single AMLCD.

Method used

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  • Signal drive circuit

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0014] like figure 1 As shown, a signal driving circuit includes a video acquisition module 1 and a conversion module 2 , and the video acquisition module 1 is connected to the AMLCD display module 4 through the conversion module 2 and the voltage regulation driving module 3 .

[0015] The video acquisition module 1 has two digital signal output ports.

[0016] The conversion module adopts 2 DA conversion chips, and the model of the conversion chip is AD9763.

[0017] The voltage regulating drive module 3 is composed of two operational amplifier chips U1 and U2 and resistors R3, R4, R5, R6, R7, R8, R9, R10. The model of the chip U1 and the chip U2 is AD858, so Pin 1 of the aforementioned chip U1 is connected to the AMLCD display module 4 through a resistor R9,

[0018] Pin 2 of the chip U1 is connected to the conversion module 2 through a resistor R5, pin 1 and pin 2 of the chip U1 are also connected through a resistor R7, pin 3 of the chip U1 is connected to a reference vol...

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Abstract

The invention discloses a signal drive circuit which comprises a video collecting module and a conversion module. The video collecting module is connected with an active matrix liquid crystal display (AMLCD) display module through the conversion module and a pressure regulating drive module, an upper bound and a lower bound of an analog voltage which is output are enabled to be controllable, thus drive voltages needed by different AMLCDs are satisfied, and the purpose of driving the different AMLCDs is achieved. Therefore, the signal drive circuit improves accuracy and stability of the drive voltages, and enables drive control of signals of the AMLCDs to be convenient and reliable.

Description

technical field [0001] The invention relates to a signal driving circuit applied to an airborne helmet display system. Background technique [0002] The helmet-mounted display is a small display device that is fixed on the helmet and generates visual images for the user. Because the helmet-mounted display system has the ability to guide radar, laser, forward-looking infrared and other detection equipment to quickly align with the target, it has become an advanced equipment for various arms. At present, there are many methods and theories related to the design and manufacture of head-mounted displays, and major developed countries in the world are also conducting similar research work, and their design and manufacturing technologies are becoming more and more mature and modern. [0003] Most of the currently developed helmet display systems use monochrome AMLCD displays. Due to their small size and high resolution, their peripheral drive circuits have become a difficult poin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 朱标刘波章小兵祝祥武王珊
Owner 中航华东光电有限公司