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Detection circuit of video transmission cable and video output chip

A detection circuit, video transmission technology, applied in the direction of TV, electrical components, image communication, etc., can solve the problem of inaccurate detection of cable type

Active Publication Date: 2015-03-25
ANALOGIX CHINA SEMICON +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The main purpose of the present invention is to provide a detection circuit and a video output chip of a video transmission cable to solve the problem of inaccurate detection of the cable type for video transmission in the prior art

Method used

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  • Detection circuit of video transmission cable and video output chip
  • Detection circuit of video transmission cable and video output chip
  • Detection circuit of video transmission cable and video output chip

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0025]It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate c...

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Abstract

The invention discloses a detection circuit of a video transmission cable and a video output chip. The detection circuit of the video transmission cable comprises a direct current power source, a first switching group, a first resistor, a second resistor, a third resistor, a second switching group and a first comparator. The first switching group comprises a first switch and a second switch. The first end of the first resistor is connected with the direct current power source, and the second end of the first resistor is connected to a detection opening through the first switch. The second switching group comprises a third switch, the first end of the third switch is used for being connected with an application processor of a mobile device, and the second end of the third switch is connected to a first node. The first input end of the first comparator is connected to the first node, and the second input end of the first comparator is connected to a second node. The detection circuit solves the problem that cable type detection is inaccurate for video transmission in the prior art, and the effect of improving the detection precision of the video transmission cable is achieved.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a detection circuit of a video transmission cable and a video output chip. Background technique [0002] Slimport is a digital mobile HD interface standard compatible with the MyDP standard. The full name of MyDP is Mobility DisplayPort, which was launched by the Video Electronics Standards Association (VESA) in 2011. Mobile devices built using this standard can output 1080P high-definition video, high-quality audio and even 3D through the Micro USB interface. stereoscopic image to the corresponding display device. Slimport is fully compatible with MyDP, and performs the same function as MyDP, that is, the video on mobile devices (such as mobile phones, tablets, etc.) is output to large display devices (such as TVs, monitors, etc.) through Micro USB interface and slimport cable. [0003] When a cable is plugged into an interface of a mobile device, the mobile device must firs...

Claims

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Application Information

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IPC IPC(8): H04N17/00
Inventor 黄维柱
Owner ANALOGIX CHINA SEMICON
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