CN204697188U

CN204697188U - HDMI ultra high-definition image signal source

Info

Publication number: CN204697188U
Application number: CN201520411584.1U
Authority: CN
Inventors: 许伟凤; 殷乐生
Original assignee: BEIJING AGESI TECHNOLOGY Co Ltd
Current assignee: BEIJING AGESI TECHNOLOGY Co Ltd
Priority date: 2015-06-15
Filing date: 2015-06-15
Publication date: 2015-10-07
Anticipated expiration: 2025-06-15

Abstract

HDMI ultra high-definition image signal source, exports 2 road HDMI signals, measures the HDMI of television set for TV production line.After signal source powers on by ARM by picture material from SD card read and be loaded into DDR3 memory bar by FPGA, read the image in DDR3 memory bar by FPGA again and output on the LVDS port of FPGA, then turning HDMI chip by LVDS and convert HDMI signal to and output in HDMI.

Description

HDMI ultra high-definition image signal source

Technical field

The utility model relates to the HDMI Display Technique in LCD TV field, be specifically related to a kind of by ARM picture material read from SD card and be loaded into DDR3 memory bar by FPGA, then by the image in FPGA reading DDR3 memory bar and the image signal generator outputted in HDMI.

Background technology

In the past during the decade, TV tech experienced by unthinkable fast development, simulative display technology substitute by digital technology, full HD (FHD, 1920 x 1080 resolution) theory of TV is rooted in the hearts of the people, impayablely experience is viewed and admired for user brings, along with popularizing of liquid crystal flat-plate television comprehensively, its screen size increases day by day, picture element density (PPI) is constantly declined, and full HD resolution cannot meet the requirement of user Geng Gao audiovisual experience, ultra high-definition (UHD, 3840 x 2160), be namely commonly called as 4K2K TV and just popularize gradually.

Within 2013, HDMI forum has held the news conference of new criteria in Beijing, has formally issued HDMI specification towards China, compared with previous generation 1.4b, new HDMI version complies with current market, greatly improve transmission bandwidth and speed, and support more new features, the transmission bandwidth of HDMI specification maximum support 18Gbps, version before being far longer than, thus the image data transmission realizing 4K2K 50/60Hz.

Because the TV configuring HDMI is just popularized, corresponding detecting instrument equipment is not also caught up with, and therefore, is badly in need of a kind of HDMI ultra high-definition image signal source of high efficient and reliable, measures the HDMI of television set for TV production line.

Summary of the invention

The utility model aims to provide a kind of HDMI ultra high-definition picture signal source apparatus, in order to realize the HDMI of test television set.

To achieve these goals, basic ideas of the present utility model are: by ARM by picture material from SD card read and be loaded into DDR3 memory bar by FPGA, read the image in DDR3 memory bar by FPGA again and output on the LVDS port of FPGA, then turning HDMI chip by LVDS and convert HDMI signal to and output in HDMI.

HDMI ultra high-definition image signal source, this picture signal source apparatus comprises: ARM module, FPGA module, HDMI output module, DDR3 memory bar module, SD card module, OLED module, KEY module form; It is characterized in that, the output of described HDMI output module is provided with HDMI, and input is controlled by described FPGA module; Described DDR3 memory bar module is controlled by described FPGA module; Described FPGA module is by described ARM module controls; Described SD card module is by described ARM module controls; Described OLED module by described ARM module controls, described ARM module by described KEY module controls.

The utility model tool has the following advantages:

1, the ultra high-definition picture signal of 2 tunnel HDMI is provided to export, every road HDMI maximum support 3840 x 2160 60Hz;

2, the picture format that HDMI output interface exports comprises: 1080P60Hz, 2160P30Hz, YUV420 2160P60Hz, RGB444 2160P60Hz;

3, the audio format that HDMI output interface exports is 48K sample rate, frequency is 0 ~ 20KHz, sine waveform;

4, HDMI output interface supports HDCP1.4, HDCP2.2 image encryption;

5, HDMI output interface supports EDID verification;

6, the image that the image support 24 that HDMI exports is produced by FPGA algorithm and the BMP image being arranged in SD card;

Accompanying drawing explanation

Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a application's part, does not form and not only limit of the present utility model, in the accompanying drawings:

Fig. 1 is global design structure chart of the present utility model.

Fig. 2 is FPGA module internal design structures figure of the present utility model.

Embodiment

Should be appreciated that concrete enforcement described herein is only in order to explain the present invention, is not intended to limit the present invention.

Shown in Figure 1, the novel HDMI ultra high-definition picture signal source apparatus that the utility model proposes, comprises ARM module, FPGA module, HDMI output module, DDR3 memory bar module, SD card module, OLED module, KEY module; By ARM module picture material read from SD card module when powering on and be loaded in DDR3 memory bar module by FPGA module, read the image in DDR3 memory bar module by FPGA module again and output in HDMI module by LVDS, last convert HDMI signal to by HDMI module and output in HDMI, after powering on ARM module real-time reception KEY module KEY order and control ARM module carries out the switching of HDMI picture format, picture material switches, output image HDCP encrypts setting and output audio set of frequency.

Shown in Figure 2, the FPGA module of the novel HDMI ultra high-definition picture signal source apparatus that the utility model proposes, comprises ArmCtrl module, Ddr3Ctrl module, IntImageGen module, VdoTimeGen module, VdoDataGen module, 2 8CH LVDS modules, ArmCtrl module communicates with ARM module in Fig. 1, the work of other module in control chart 2, Ddr3Ctrl module is for reading and writing DDR3 memory bar module in Fig. 1, IntImageGen module is for generation of Built-in Image and write in the DDR3 memory bar module of Fig. 1 by Ddr3Ctrl module, the video time sequence parameter output video clock signal that VdoTimeGen module provides according to ArmCtrl module is to VdoDataGen module, the video sequential that VdoDataGen module provides according to VdoTimeGen module exports to VdoDataGen module by Ddr3Ctrl module reading images from the DDR3 memory bar module of Fig. 1, view data is converted to LVDS signal and outputs in 2 8CH LVDS modules by VdoDataGen.

Claims

1.HDMI interface ultra high-definition image signal source, is made up of ARM module, FPGA module, HDMI output module, DDR3 memory bar module, SD card module, OLED module, KEY module; It is characterized in that, the output of described HDMI output module is provided with HDMI, and input is controlled by described FPGA module; Described DDR3 memory bar module is controlled by described FPGA module; Described FPGA module is by described ARM module controls; Described SD card module is by described ARM module controls; Described OLED module by described ARM module controls, described ARM module by described KEY module controls.

2. HDMI ultra high-definition image signal source according to claim 1, is characterized in that, the LVDS signal that FPGA module exports converts HDMI signal to through HDMI module and outputs in HDMI.

3. HDMI ultra high-definition image signal source according to claim 1, it is characterized in that, FPGA module inside is made up of ArmCtrl module, Ddr3Ctrl module, IntImageGen module, VdoTimeGen module, VdoDataGen module, 2 8CH LVDS modules; Described ArmCtrl module is used for and described ARM module communication; Described Ddr3Ctrl module is for reading and writing described DDR3 memory bar module; Described VdoTimeGen module produces video clock signal by described ArmCtrl module controls; Described VdoDataGen module is by described ArmCtrl module controls, and the video clock signal produced according to described VdoTimeGen module produces view data; The video data that described VdoDataGen module exports is exported by described 2 8CH LVDS modules; Described IntImageGen module produces Built-in Image by described ArmCtrl module controls and writes described DDR3 memory bar module.

4. HDMI ultra high-definition image signal source according to claim 1, it is characterized in that, by the KEY order of ARM module real-time reception KEY module and control ARM module carries out the switching of HDMI picture format, picture material switches, output image HDCP encrypts and arranges and output audio set of frequency.