System and method for long-distance transmission of MIPI camera signals

Abstract

The invention relates to a system and a method for long-distance transmission of MIPI (Mobile Industry Processor Interface) camera signals. A transmission device is arranged between a camera test device and a camera under test. The camera test device is connected with the transmission device through a high-speed connecting line. The camera under test is connected with a signal separation circuit and a signal conversion circuit in sequence. The camera under test is connected with the power signal of the camera test device through a power connecting line, and transmits the control signal of the camera test device through a control connecting line. The control signal is used to configure the parameters of the camera under test. The signal offset, jitter, attenuation and distortion problem caused by long transmission distance and the weak anti-interference ability of MIPI image signals during signal transmission between the camera under test and the camera test device is solved. The camera test device can detect a high-performance MIPI camera over a long distance under large data volume and high frame rate. Industrial inspection of cameras is facilitated.

Description

technical field [0001] The invention relates to the fields of data transmission and data processing, in particular to a system and method for long-distance transmission of MIPI camera signals. Background technique [0002] Smart products such as mobile phones, tablet computers, drones, etc. have higher and higher performance requirements for cameras used for taking pictures and video recordings, and have MIPI (Mobil Industry Processor Interface for short MIPI) with fast speed, large amount of transmitted data, and low power consumption. The camera module with interface is very popular, and its usage is also growing rapidly. [0003] The MIPI image signal protocol is divided into low-power LP (Low-Power) mode and high-speed HS (High-Speed) mode during transmission. When transmitting image and video data, the signal is transmitted as a data stream in HS mode. The typical value of the signal voltage swing in HS mode is only 0.2V, and the signal is susceptible to interference, ...

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Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention proposes a MIPI camera signal long-distance transmission system and method, which can improve the signal integrity of the MIPI image signal during long-distance transmission, and solve the problem of high-performance MIPI cameras with large data and low frame rate. The problem that long-distance detection cannot be performed when the rate is high

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