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Digital-to-analog signal conversion integrated circuit

A signal conversion and integrated circuit technology, applied in the direction of video signal spatial resolution conversion, standard conversion, television, etc., can solve the problems of insufficient number or types of interfaces, inconvenient use, etc., and achieve the effect of increasing richness

Active Publication Date: 2020-11-27
深圳市研盛芯控电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the problem of inconvenient use caused by insufficient number or types of original CPU interfaces in the design of existing motherboards, the application provides a digital-to-analog signal conversion integrated circuit

Method used

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  • Digital-to-analog signal conversion integrated circuit

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Embodiment Construction

[0037] In order to make the purpose, technical solutions and advantages of this application clearer, the following in conjunction with the attached Figure 1-2 And embodiment, this application is described in further detail. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0038] The embodiment of the present application discloses a digital-to-analog signal conversion integrated circuit, which is applied to a display. The integrated circuit includes: CPU, CPU native LVDS interface, CPU native VGA interface, LVDS signal input module 1 , LVDS signal output module 2 , digital-to-analog conversion module 3 and VGA output interface 4 .

[0039] refer to figure 1 , the LVDS signal input module 1 includes an LVDS input interface and an LVDS receiver 11 connected to the LVDS input interface, wherein the LVDS input interface is connected to the original LVDS interface of the ...

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Abstract

The invention relates to a digital-to-analog signal conversion integrated circuit, and the integrated circuit comprises: an LVDS signal input module which is used for receiving an LVDS signal from theoutside; a LVDS signal output module which is connected to the LVDS signal input module and is used for outputting LVDS signals to drive a display; a digital-to-analog conversion module which is connected to the LVDS signal input module and is used for converting the LVDS signal into a VGA signal; a VGA output interface which is connected to the digital-to-analog conversion module and is used foroutputting a VGA signal, wherein the digital-to-analog conversion module comprises a digital-to-analog conversion unit and a video processing unit, the video processing unit is used for finely adjusting an input LVDS signal so as to zoom an output video and adjust the display resolution, the video processing unit is connected to the LVDS signal input module, the digital-to-analog conversion unitis connected to the video processing unit, and the VGA output interface is connected to the digital-to-analog conversion unit. According to the invention, two paths of VGA signal output are supported,one path of DDI data signal input is also supported, AV and TV signals are output, and different interface requirements are met.

Description

technical field [0001] The present application relates to the technical field of integrated circuits, in particular to a digital-to-analog signal conversion integrated circuit. Background technique [0002] When designing the main board applied to the LCD display, usually, because the CPU only supports one native VGA (analog signal display interface) and one LVDS (digital signal display interface), when the product design requires two VGA plus one LVDS, because the CPU It only supports one native VGA and one LVDS display interface, lacks native analog signal display interface, and is limited by the number or types of native interfaces of the CPU, so it has to obtain the required interface through the peripheral digital-to-analog conversion scheme, that is, the external interface It is inconvenient to import the required digital-to-analog conversion equipment to obtain the interface and then adapt the display. Contents of the invention [0003] In order to improve the prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N5/765
CPCH04N7/01H04N7/0117H04N5/765
Inventor 钟煌
Owner 深圳市研盛芯控电子技术有限公司