Camera image transmission device based PCI-E (Peripheral Component Interconnected Express) interface and transmission control method thereof

Abstract

The invention discloses a camera image transmission device based on a PCI-E (Peripheral Component Interconnected Express) interface. The camera image transmission device comprises a first mainboard and a second mainboard, wherein the first mainboard is connected with a to-be-tested camera by virtue of a camera parallel interface and is provided with a first FPGA (Field Programmable Gate Array) with a first programming configuration chip, a storage and a level conversion circuit; the second mainboard is connected with a computer host provided with testing software by virtue of the PCI-E interface; the second mainboard is provided with a clock module, a second FPGA provided with a second programming configuration chip and a PCI-E bridging chip provided with a local configuration chip; the PCI-E bridging chip exchanges data with the computer host by virtue of a PCI-E transport protocol and exchanges data with the second FPGA by virtue of a local bus transport protocol; the second FPGA on the second mainboard is connected with the first FPGA on the first main board by virtue of an LVDS (Low-Voltage Differential Signaling) interface. The camera image transmission device disclosed by the invention can be used for realizing image data transmission based on the PCI-E interface, greatly improving the test rate of the camera with high pixels and improving the production efficiency.

Description

technical field [0001] The invention relates to a camera image transmission device for connecting test software of a host computer and a camera to be tested to transmit image data, in particular to a camera image transmission device based on a PCI-E interface and a transmission control method thereof. Background technique [0002] With the advancement of science and technology, the pixels of digital cameras are getting higher and higher, and have been upgraded to tens of millions of pixels, which requires higher transmission rates of image data in production and testing. At present, the camera image transmission device is used to connect the camera to be tested and the PC test software, and the PC test software starts and controls the work of the camera through the camera image transmission device; the camera image transmission device obtains the configuration information of the camera from the PC test software, and The image data information of the camera is transmitted to ...

AI Technical Summary

Problems solved by technology

However, at present, the connection between the camera image transmission device and the host computer software is based on the USB2.0 interface, and the transmission rate based on the USB2.0 interface can no longer meet the requirements of image data transmission and test requirements.

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