Method and apparatus for inspecting connection status between display device and peripheral equipment

A technology for display devices and external devices, which is applied in the multimedia field to achieve the effect of convenient connection

Active Publication Date: 2007-11-21
SHENZHEN TCL NEW-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method and device for detecting the connection state between a display device and an external device, so as to solve the problem that the user simply and quickly connects the display device and the external device

Method used

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  • Method and apparatus for inspecting connection status between display device and peripheral equipment
  • Method and apparatus for inspecting connection status between display device and peripheral equipment
  • Method and apparatus for inspecting connection status between display device and peripheral equipment

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Embodiment Construction

[0028] The basic principle of the present invention is to detect the input impedance of the input port when judging whether the TV is connected to the external device, and to judge whether the device is connected through the change of the input impedance and display it on the screen.

[0029] The principle diagram of the present invention is shown in Figure 1, wherein the impedance detector is connected to the input port through a switch, used to detect the impedance value of the input port and compare it with a predetermined impedance value and then feed it back to the MCU of the display device, and the MCU judges the display device The connection status with the external device will be displayed on the display device.

[0030] A detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0031] The display device in the embodiment of the present invention takes TV as an example, and the circuit diagram is as shown in Fig...

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Abstract

A device used for detecting connection state between display unit and externally connected unit consists of input port of display unit, microprocessor MCU and impedance detector connected with said input port. It is featured as using said impedance detector to detect impedance value of said input port and using said MCU to judge connection state between display unit and externally connected unit according to detected impedance value.

Description

technical field [0001] The invention relates to multimedia technology, in particular to a detection technology for detecting the state of communication between a display device and an audio and video input device. Background technique [0002] With the development of multimedia technology, there are more and more external devices for various display devices, and the connection between display devices and external devices is often connected through signal lines, so that there are more and more input ports for display devices. [0003] Take TV as an example, in addition to watching TV programs, many families also use it to play audio and video programs such as CD, CD, DVD, etc. Therefore, TVs generally have more than 10 RCA ports for connecting these external devices. use. Usually, the input ports of the TV are mostly arranged at the back of the TV casing, so as to prevent a large number of signal lines from being exposed to the viewer's sight and affecting the perception. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
CPCG06F13/4072
Inventor 黄凯华
Owner SHENZHEN TCL NEW-TECH CO LTD
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