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Starting-up control circuit

一种开机控制、电路的技术，应用在数据处理电源、电数字数据处理、测量装置等方向，能够解决不是很方便等问题

Inactive Publication Date: 2014-05-28
HONG FU JIN PRECISION IND WUHAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you need to turn it on, you have to bend down, which is not very convenient

Method used

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  • Starting-up control circuit

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:

[0018] The start-up control circuit of the present invention is arranged inside the display, and uses the VGA connector 1 of the display to realize the purpose of controlling start-up. The following will first briefly describe the VGA connector:

[0019] Please refer to figure 1 , the VGA connector 1 includes fifteen pins, and the boot control circuit of the present invention only needs to use the twelfth pin P12 of the VGA connector 1 ( figure 1 Only the twelfth pin P12 is identified in ). The twelfth pin P12 is an address code pin. According to the VGA specification, when the power button of the display is pressed, the twelfth pin P12 outputs a high level signal; Pin P12 outputs a low level signal.

[0020] Please continue to refer figure 1 , A preferred implementation of the start-up control circuit includes triodes Q1-Q5 and a 555 time...

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Abstract

A starting-up control circuit is connected between a VGA (video graphics array) connector of a display and a super input and output chip on a mainboard and comprises a first electronic switch, a second electronic switch, a third electronic switch, a fourth electronic switch, a fifth electronic switch and a 555 timer, wherein when a power key of the display is pressed down, an address code pin of the VGA connector outputs a high level signal; a first end and a second end of the first electronic switch are connected with each other; a first end and a second end of the second electronic switch are connected with each other; a first end and a second end of the fourth electronic switch are also connected with each other; an output pin of the 555 timer outputs periodic pulse level; and when the output pin of the 555 timer outputs a high level signal, a first end and a second end of the third electronic switch are connected with each other, so that the super input and output chip receives a low level signal, and the mainboard is started. By using the starting-up control circuit, the mainboard can be started through the power key of the display.

Description

technical field [0001] The invention relates to a start-up control circuit. Background technique [0002] Present desktop computer is all provided with a start button, and this start button is generally arranged on the front panel of casing, and computer casing is generally all placed under the computer table. If you need to turn it on, you have to bend over, which is not very convenient. Contents of the invention [0003] In view of the above, it is necessary to provide a power-on control circuit that can control the power-on through the keys of the display. [0004] A kind of start-up control circuit, is connected between the VGA connector of display and the super input and output chip that is arranged on the main board, described start-up control circuit comprises: [0005] A first electronic switch, the control terminal of the first electronic switch is connected to the address code pin of the VGA connector, the first terminal is grounded, and the second terminal is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/26
CPCG06F1/26G06F3/0481G06F3/04842
Inventor 熊金良黄永兆
Owner HONG FU JIN PRECISION IND WUHAN CO LTD
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