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FPGA-based Camera-Link-to-SD/HD-SDI device

A technology of data acquisition module, which is applied in the field of camera data transmission and conversion, and can solve problems such as limited, inability of CameraLink interface cameras, display transmission distance, etc.

Inactive Publication Date: 2014-08-20
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the technical problem that the Camera Link interface camera in the prior art cannot be displayed on the monitor and the transmission distance is limited, and provides a device based on FPGA-based Camera Link to SD / HD-SDI

Method used

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the drawings.

[0025] The FPGA-based Camera Link to SD / HD-SDI device of the present invention includes a Camera Link acquisition module, FPGA, SDRAM memory and SD / HD-SDI module. The Camera Link module collects several sub-image data to the FPGA, and buffers one frame from the FPGA to the SDRAM memory. Then the FPGA reads the data in the SDRAM and encodes it according to the SMPTE standard, and outputs the encoded data to SD / HD-SDI The module can display the converted image through the SDI monitor.

[0026] Here, the Camera Link acquisition module uses the DS90CR286 chip from National Semiconductor, which can convert the LVDS signal output by the Camera Link camera into a CMOS / TTL signal that the FPGA can handle; The acquisition module reads data, reads and writes data to SDRAM, transforms the color space of image data, provides first-in-first-out (FIFO) buffer unit and output image encoding; SDRAM ...

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Abstract

The invention relates to an FPGA-based Camera-Link-to-SD / HD-SDI device which includes a Camera Link acquisition module, an FPGA, SDRAM storages and an SD / HD-SDI module. The Camera Link acquisition module is capable of acquiring a plurality of sub-image data to the FPGA and one frame is cached in the SDRAM storages via the FPGA and then the data in the SDRAMs are read by the FPGA and coded according to an SMPTE standard. The coded data can be output to the SD / HD-SDI module and converted images can be displayed through an SDI monitor. The Camera Link camera has a resolution which is lower than 1920*1080 and the field period is absolutely equal to or slightly smaller than the field period of a corresponding SDI standard video. A standard resolution is selected according to a video resolution input by the Camera Link so that conversion can be carried out.

Description

Technical field [0001] The invention relates to the technical field of camera data transmission and conversion, in particular to an FPGA-based Camera Link to SD / HD-SDI device. Background technique [0002] At present, SD / HD-SDI related video equipment is produced in accordance with international standards and can only output and capture videos that meet fixed standards. SDI capture cards and monitors can only capture or display video in standard formats, including those that meet PAL, NTSC, and SMPTE125M. , SMPTE259M, SMPTE274M, SMPTE292M, SMPTE296M and other standard videos, mainly including resolutions of 720×480, 720×576, 1280×720, 1920×1080 and other standard format resolution videos. The Camera Link camera is a kind of camera that is widely used in engineering. However, due to the particularity of the interface, it is troublesome to collect and display the camera output image, and the video signal transmission distance is limited, and the camera output image of the Camera Li...

Claims

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Application Information

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IPC IPC(8): H04N5/77H04N7/18
Inventor 朱明陈东成
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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