Video conversion device

A video conversion and conversion technology, applied in the direction of TV, color TV, color TV parts, etc., can solve the problem that the video interface of low-voltage differential signal can only be connected to LVDS display screen, etc.

Inactive Publication Date: 2012-07-11
深圳市英康仕电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the low-voltage differential signal (LVDS) video interface can only be connected to the LVDS display screen, the purp...

Method used

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Embodiment 1

[0025] This embodiment discloses a video conversion device, which is used to convert the video signal of one of the display signal interfaces of the Menlow platform: LVDS video interface 7, into video signals of other formats, so as to meet the requirements of multiple format dual-screen display technologies.

[0026] Such as figure 1 As shown, the video conversion device includes: LVDS signal input port 1, A / D conversion unit 2, TTL video signal output port 3, D / A conversion unit 4, VGA video signal output port 5; wherein, the LVDS signal input Port 1 is connected on LVDS interface 7, the input end of A / D conversion unit 2 is connected with LVDS signal input port 1, and the output end of described A / D conversion unit 2 is connected with TTL video signal output port 3; Wherein, the The input end of the D / A conversion unit 4 is connected to the output end of the A / D conversion unit 2 , and the output end of the D / A conversion unit 4 is connected to the VGA video signal output p...

Embodiment 2

[0030] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 lies in that a TV video signal output port 6 is also connected to the output end of the D / A conversion unit 4 .

[0031] In this embodiment, the LVDS differential signal output by the LVDS interface 7 is converted into the TTL interface R, G, and B digital signals required by the LCD screen through the A / D conversion chip 2, and then converted into analog signals through the corresponding D / A conversion chip. Composite video broadcast signal (CVBS) and Svideo signal are sent to TV video signal output port 6 for output, supporting TV display.

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Abstract

The invention relates to a video signal conversion technology, and particularly discloses a video conversion device which is used for converting LVDS (Low Voltage Differential Signaling) into video signals of various other types. The video conversion device comprises an A/D (analog-to-digital) conversion unit and a D/A (digital-to-analog) conversion unit. According to the invention, through the A/D conversion unit, the LVDS video signals output by the LVDS video interface of a Menlow platform are converted into transistor-transistor logic level digital signals required by an LCD, and then converted into simulating signals supporting VGA (Video Graphics Array) display through the D/A conversion unit. Through the Menlow platform added in the invention, the double-screen display is flexibly realized; and more than nine display combinations are realized, such as LVDS display, CRT (Cathode Ray Tube) display and TV display which are converted based on LVDS interface of the Menlow platform, as well as VGA display, HDMI (High-Definition Multimedia Interface) display, and TV display which are converted based on SDVO (Serial Digital Video Output).

Description

technical field [0001] The invention relates to a video signal conversion technology, in particular to a video conversion device for converting a low-voltage differential signal (LVDS) into multiple video signals in other formats. Background technique [0002] Manu (Menlow) platform is the processor giant Intel designed processors for portable computers (UMPC), including Silverthorne processor + Poulsbo chipset. [0003] At present, Menlow's platform is more and more widely used in industries such as industrial control, military aerospace equipment, medical electronics, vehicle-mounted computers, and human-machine interfaces. [0004] The existing Menlow platform has only two display signal interfaces: low voltage differential signal (LVDS) video interface + serial digital video output (SDVO) interface, SDVO signal can be transferred to VGA (standard video transmission) display, HDMI (high definition Multimedia interface) display, TV (television) display, and LVDS video int...

Claims

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Application Information

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IPC IPC(8): H04N5/14H04N5/765
Inventor 李振
Owner 深圳市英康仕电子有限公司
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