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Mixed digital interface

A technology of digital interface and USB interface, applied in the interface field, can solve the problem of incompatibility between HDMI interface and USB interface, and achieve the effect of saving space, reducing cost and being convenient to use.

Active Publication Date: 2009-06-24
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a hybrid digital interface, which aims to solve the problem that the HDMI interface and the USB interface in the prior art are not compatible

Method used

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] The functional block diagram of the hybrid digital interface provided by the embodiment of the present invention is as follows figure 1 As shown, it includes a controller 11, a multiplexer 14 connected to the controller, an HDMI interface circuit 12 and a USB interface circuit 13 connected to the multiplexer 14, and the HDMI interface circuit 12 and USB The HDMI interface 15 embedded with the USB interface connected to the interface circuit 13 . The HDMI interface circuit 12 includes an HDMI impedance matching circuit 122 and an HDMI interface controller 121 , and the USB interface circuit ...

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Abstract

The invention provides a mixed digital interface, which comprises a controller, a multipath selector connected with the controller, an HDMI interface circuit and a USB interface circuit connected with the multipath selector, and an HDMI interface with an embedded USB interface connected with the HDMI interface circuit and the USB interface circuit. The controller is used to control the multipath selector to choose the HDMI interface circuit and realize the transmission of HDMI signals, or choose the USB interface circuit to realize the data transmission of USB. The technical scheme provided by the invention combines the HDMI interface and the USB interface together, and only one digital interface is adopted to realize HDMI protocol and USB protocol, thereby facilitating use, saving space and at the same time reducing cost, and automatically realizing the selection between the HDMI interface circuit and the USB interface circuit.

Description

technical field [0001] The invention belongs to the field of interface technology, in particular to the technology of HDMI (High-Definition Multimedia Interface) interface and USB (Universal Serial Bus) interface. Background technique [0002] The USB interface is a bus interface widely used in existing electronic equipment, and is generally used in various products, such as computers, televisions, set-top boxes, digital cameras, and the like. USB devices have become an indispensable part of people's daily life. [0003] With the vigorous development of audio-visual technology, people have higher and higher requirements for image resolution, color depth, and chromaticity. As a result, high-definition digital video interfaces have also developed, and applications such as HDMI interfaces have become more and more extensive. [0004] There are currently three types of HDMI interfaces: Type A, Type B, and Type C. Among them, Type A has 4 pairs of differential channels, 2 contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40H04N5/765
Inventor 庞维
Owner TCL CORPORATION
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