PG signal transmission control device and method based on PCIe and HDMI

A signal transmission and control device technology, applied in image communication, color TV parts, TV system parts, etc., can solve problems such as limited bandwidth, large number of signals, and long time for transmitting large data, so as to improve the decoding efficiency Efficiency and quality, reduced workload, effect of low number of signals

Active Publication Date: 2018-01-09
WUHAN JINGCE ELECTRONICS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) For single-ended signals, the signal rate should not be too high;
[0004] 2) The large number of signals is not conducive to board-level design;
[0005] 3) Bandwidth is limited, and it takes a long time to transmit large data

Method used

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  • PG signal transmission control device and method based on PCIe and HDMI
  • PG signal transmission control device and method based on PCIe and HDMI
  • PG signal transmission control device and method based on PCIe and HDMI

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Currently, you need to use PG to order a 1080p resolution screen, the effective pixels of the image used to order the screen are 1920x1080, and the size of a picture is 1920*1080*32 / 1024 / 1021=63.3M.

[0063] If EBI (bandwidth is about 1G) is used for transmission, 1000 / 63.3=15 sheets can be transmitted in 1 second.

[0064] If the pictures of the same size are transmitted, but if the device of the present invention transmits, then 5000 / 63.3=78 sheets can be transmitted in 1 second, and the time of using this device is about 1 / 5 of the transmission time using EBI, which greatly saves transmission time .

Embodiment 2

[0066] Now the customer needs a high-bandwidth PG that can support video playback, and requires support for 1080@30 video playback.

[0067] PG using traditional EBI communication, the effective bandwidth of EBI only supports 1080@15, which does not include other communication data of ARM and FPGA, which obviously cannot meet the requirements.

[0068] With the device of the present invention, except that the interactive signal between ARM and FPGA is transmitted through PCIe without occupying the bandwidth of video transmission, HDMI can support a resolution up to 2160@30, fully meeting customer needs.

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Abstract

The invention discloses a PG signal transmission control device and a PG signal transmission control method based on a PCIe and an HDMI. The device comprises a PC, a PHY, an ARM, an FPGA and a displayconnected in sequence, wherein the ARM and the FPGA communicate with each other via the HDMI and the PCIe, the HDMI is used for transmitting video data, and the PCIe is used for transmitting image data and control signals. Compared with the traditional PG, the device has different points: the PCIe and the HDMI, on a physical channel, and meanwhile the PC no longer decodes videos. The traditionalPGARM does not have a video hard decoding function, so that decoding work can only be executed by the PC, and then the decoded data is transferred to the FPGA from an EBI or an EMIF through the ARM via a network, the EBI and the EMIF have bandwidth limitation, so that the PG cannot play high-definition videos; after the HDMI is added, the video data from the ARM to the FPGA is transmitted via theHDMI which is a special video transmission interface with high bandwidth, so that the device is suitable for transmitting the videos with various kinds of definition.

Description

technical field [0001] The invention relates to LED / LCM screen testing technology, in particular to a PCIe and HDMI-based PG signal transmission control device and method. Background technique [0002] At present, the PG (Pattern Generator) of LED / LCM dot screen on the market is usually ARM+FPGA architecture, such as figure 2 As shown, the communication between ARM and FPGA is physically realized through the EBI (External Bus Interface) interface or both EMIF (External Memory Interface) interfaces. EBI and EMIF interfaces have the following disadvantages: [0003] 1) For single-ended signals, the signal rate should not be too high; [0004] 2) The large number of signals is not conducive to board-level design; [0005] 3) The bandwidth is limited, and it takes a long time to transmit large data. Contents of the invention [0006] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a PG signal transmission control device and me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/765
Inventor 余广德
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD
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