Electronic equipment, MHL (mobile high-definition link) connector, MHL system and connector detection method

A technology of electronic equipment and connectors, which is applied in the electronic field, can solve the problems of poor audio and video signal quality and unstable work, and achieve the effect of good signal transmission quality

Active Publication Date: 2013-08-07
XIAOMI INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of unstable operation and poor quality of output audio and video signals that may occur when electronic devices use MHL connectors casually, an embodiment of the present invention provides an electronic device, an MHL connector, an MHL system, and a connector detection method

Method used

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  • Electronic equipment, MHL (mobile high-definition link) connector, MHL system and connector detection method
  • Electronic equipment, MHL (mobile high-definition link) connector, MHL system and connector detection method
  • Electronic equipment, MHL (mobile high-definition link) connector, MHL system and connector detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Please refer to figure 2 , which shows a schematic structural diagram of the electronic device provided by Embodiment 1 of the present invention. The electronic equipment, including:

[0077] Processor 201 , MHL chip 202 , USB switch 203 , USB interface 204 , power supply unit 205 , first switch S1 controlled by MHL chip 202 and second switch S2 controlled by processor 201 .

[0078] One end of the first switch S1 is electrically connected to the processor 201, and the other end of the first switch S1 is electrically connected to the detection terminal ID in the USB interface 204. The first switch S1 is used for connecting the USB interface 204 to the non-MHL connector. When other devices are connected, make the processor 201 obtain the identification signal on the detection terminal ID;

[0079] One end of the second switch S2 is electrically connected to the processor 201, and the other end of the second switch S2 is electrically connected to the detection terminal...

Embodiment 2

[0082] Please refer to image 3 , which shows a schematic structural diagram of the MHL connector provided in Embodiment 2 of the present invention. The MHL connector includes:

[0083] MHL chip 301 , USB interface 302 , third switch S3 , grounding resistor R1 and encryption chip 303 .

[0084] The control end of the third switch S3 is electrically connected to the power terminal VBUS in the USB interface 302, one end of the third switch S3 is electrically connected to the detection terminal ID in the USB interface 302, and the other end of the third switch S3 is at the first When in the switching state, it is electrically connected to one end of the grounding resistor R1; the other end of the third switch S3 is electrically connected to the encryption chip 303 in the second switching state. The other end of the grounding resistor R1 is grounded.

[0085] The encryption chip 303 is electrically connected to the power supply terminal VBUS in the USB interface 302, and the en...

Embodiment 3

[0088] Please refer to Figure 4, which shows a schematic structural diagram of the MHL system provided by Embodiment 3 of the present invention. The MHL system includes: an electronic device 420 , an MHL connector 440 and a playback device 460 .

[0089] The electronic device 420 includes: a processor 421 , an MHL chip 422 , a USB switch 423 , a USB interface 424 , a power supply unit 425 , a first switch S1 controlled by the MHL chip 422 and a second switch S2 controlled by the processor 421 . in:

[0090] The processor 421 is electrically connected to the MHL chip 422, and the processor 421 is also electrically connected to the first data terminal D+ and the second data terminal D- in the USB interface 424 through the USB switch 423 in the first conducting state, respectively, The processor 421 is also electrically connected to the power unit 425 .

[0091] The MHL chip 422 is electrically connected to the control terminal of the USB switch 423, and the MHL chip 422 is a...

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Abstract

The invention discloses electronic equipment, an MHL (mobile high-definition link) connector, an MHL system and a connector detection method, and belongs to the electronic technical field. The electronic equipment further comprises a first switch controlled by an MHL chip and a second switch controlled by a processor; one end of the first switch is electrically connected with the processor, and the other end of the first switch is electrically connected with a detecting terminal ID (identity) in a USB (universal serial bus) interface; and one end of the second switch is electrically connected with the processor, and the other end of the second switch is electrically connected with the detecting terminal ID in the USB interface. Recognition signals are acquired from the detecting terminal ID according to the first switch and/or the second switch of the electronic equipment, and the MHL method is selected according to the acquired recognition signals to be allowed or forbidden to output audio/video signals, so that the problem that the outputted audio/video signals in poor quality caused by casually using the MHL connector by the electronic equipment is solved, and the audio/video signals are outputted to guarantee signal output quality under the condition that the preset MHL connector is detected.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an electronic device, an MHL connector, an MHL system and a connector detection method. Background technique [0002] MHL (Mobile High-Definition Link, mobile terminal high-definition audio-visual standard interface) is an audio-visual standard interface for connecting portable consumer electronic devices. MHL only uses the existing Micro USB interface to combine HDMI interface, USB interface and charging interface. First, the number of interfaces on the device is effectively reduced. [0003] When using MHL, the mobile phone can be connected to the MHL connector first, and then the MHL connector is connected to another electronic device such as a TV, so that the signal on the mobile phone can be directly output to another electronic device. But different MHL connectors are different. For example, some MHL connectors need electronic equipment to supply power when they are co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/765H01R13/66G06F13/38
Inventor 孙伟熊鑫雷振飞
Owner XIAOMI INC
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