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A multiplexing circuit of lvds interface and dsi interface

An interface multiplexing and circuit technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problem of resource waste of LVDS interface and DSI interface

Active Publication Date: 2019-07-23
ACTIONS ZHUHAI TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of LVDS interface and DSI interface multiplexing circuit, to solve the problem of interface resource waste caused by LVDS interface and DSI interface can not be multiplexed

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  • A multiplexing circuit of lvds interface and dsi interface
  • A multiplexing circuit of lvds interface and dsi interface
  • A multiplexing circuit of lvds interface and dsi interface

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0052] For DSI and LVDS channels, usually figure 2 The structure shown is realized. It mainly includes two modules, namely data processing circuit and driving circuit, among which:

[0053] The data processing circuit mainly realizes the parallel-to-serial processing of input data, and converts n+1 bit parallel data into 1 bit serial data. Usually, the serial data is differential. For LVDS channels, Data[n:0] is 7bit, that is, 7bit parallel data is...

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Abstract

The invention discloses a LVDS (Low Voltage Differential Signaling) interface and DSI (Display Serial Interface) multiplexing circuit, and is used for solving the problem of interface resource waste caused in a way that the LVDS interface and the DSI can not be multiplexed. The circuit comprises a data clock selection circuit, a data clock synchronization circuit, a mode control circuit, a data conversion circuit and a driving circuit, wherein the data clock selection circuit selects a current interface mode, receives a data signal and a clock signal input from outside, and provides the data signal and the clock signal to the data clock synchronization circuit; the data clock synchronization circuit carries out synchronization on the data signal and the clock signal, provided the synchronized data signal and clock signal for the data conversion circuit; the data conversion circuit converts the synchronized data signal to be serial from parallel, and outputs a differential data signal to the driving circuit; and the driving circuit utilizes the differential data signal to control the range of the output signal so as to realize the multiplexing of the LVDS interface and the DSI and reduce resource waste.

Description

Technical field [0001] The invention relates to the field of display interfaces, in particular to a method and circuit for multiplexing LVDS interface and DSI interface. Background technique [0002] Low Voltage Differential Signaling (LVDS) transmission, as a mature signal transmission technology, is widely used in the field of display interfaces, especially liquid crystal displays. However, with the rapid development of mobile terminals, higher requirements are placed on the bandwidth of the display interface. Therefore, the (Mobile Industry Processor Interface, MIPI) Alliance has proposed a Display Serial Interface (DSI) interface specification to meet the demand for higher resolution displays. For mobile consumer electronic terminals, in order to meet broader market needs, both display interface technologies will appear in the mobile processor interface to meet different customer needs, and customers will only choose to use them according to the actual plan An interface. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38
CPCG06F13/385G06F2213/3852
Inventor 杨秋平李儒陈文杰熊江
Owner ACTIONS ZHUHAI TECH CO
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