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Electronic apparatus with video play processing function

A technology for electronic devices and video playback, which is applied to parts of color TVs, parts of TV systems, TVs, etc., can solve problems such as video signal distortion, and achieve the effect of preventing distortion.

Inactive Publication Date: 2013-10-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the electronic device 100' only transmits signals to the display device, the video signal is distorted to a certain extent because the coupling capacitor C1 filters out the DC amount.

Method used

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  • Electronic apparatus with video play processing function
  • Electronic apparatus with video play processing function

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Experimental program
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Embodiment Construction

[0012] see figure 1 , is a schematic diagram of an electronic device 100 with a video function (hereinafter referred to as the electronic device 100 ). Compared with the prior art, the electronic device 100 further includes a switch K1 connected in parallel with the coupling capacitor C1 , and the switch K1 includes a first conduction terminal 101 , a second conduction terminal 102 and a controlled terminal 103 . The first conduction terminal 101 and the second conduction terminal 102 are connected to both ends of the coupling capacitor C1. The decoding chip 10 also includes a control terminal CP, and the controlled terminal 103 is connected to the control terminal CP.

[0013] When the video interface 40 of the electronic device 100 is connected to other electronic devices, the decoding chip 10 outputs a first signal through the control terminal CP to control the switch K1 to be turned off. Therefore, the video signal of the electronic device 100 is output to other electron...

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Abstract

An electronic device includes a video port, a codec chip, a Pi type filter, a coupling capacitor, and a path switch. The codec chip outputs video signals. The Pi type filter filters noise from the video signals. The coupling capacitor and the path switch are connected in parallel between the Pi type filter and the video port. When the electronic device is connected to another electronic device, the codec chip turns off the path switch, and the coupling capacitor filters direct current from the video signals from which any noise has been filtered and transmits the video signals to the another electronic device. When the electronic device is connected to a display device, the codec chip turns on the path switch, the video signals from which only noise has been filtered are directly transmitted to the display device via the path switch.

Description

technical field [0001] The invention relates to an electronic device, in particular to an electronic device with a video playback processing function. Background technique [0002] Currently, electronic devices such as mobile phones, digital cameras, and e-books all have video playback processing functions. Such as figure 1 As shown, the current electronic device 100 ′ (hereinafter referred to as the electronic device 100 ′) with video playback processing function includes a decoding chip 10 , a π-type filter 20 , a video switch 30 and a video interface 40 . The decoding chip 10 includes an output terminal OP for outputting the decoded video signal, which is filtered by a π-type filter 20, and connected to a video interface 40 through a video switch 30. The video interface 40 is used to connect to a display device. The display device displays the video signal. As we all know, the video signals of different electronic devices have different DC amounts. When video signals a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/10H04N5/765
CPCH04N5/765H04N5/775G11B20/10
Inventor 汪涛
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD