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Multi-channel image data transmission system, method and equipment

A technology of image data and transmission system, which is applied in the computer field, can solve the problems of 2-channel camera data complexity, difficult frame rate guarantee, time-consuming, etc., and achieve the effect of saving memory overhead, saving time consumption, and frame rate without loss

Active Publication Date: 2021-08-03
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]If the original image data is transmitted uncompressed, the image transfer protocol is usually used to convert the chip. First, the camera image data is input into the conversion chip, and then the conversion chip is output to the transmission chip. On the target system, but usually one conversion chip can only access one camera image data and output it to the target system. If it is necessary to realize the transmission of two camera image data, the conventional solution usually selects multiple image transmission protocol conversion chips, and there is also a single The FPGA chip interleaves the 2-way camera data by row and then transmits them through the BT656 protocol. The process of merging, splitting, and restoring the 2-way camera data in this solution is complicated and time-consuming, and the frame rate is difficult to guarantee. Transmission BT656 protocol, it is difficult to achieve high-speed transmission with large resolution and high frame rate

Method used

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  • Multi-channel image data transmission system, method and equipment
  • Multi-channel image data transmission system, method and equipment
  • Multi-channel image data transmission system, method and equipment

Examples

Experimental program
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example 1

[0064] Example 1. The marking rule is: the specified position is the same, but the Y value is different

[0065] The first system chip is configured to mark the Y value of the first designated position in the YUV frame data collected by the first camera as a first designated value based on the marking rule corresponding to the first camera, and mark the Y value of the first designated position in the YUV frame data collected by the first camera. The Y value at the first specified position in the YUV frame data collected by the second camera is marked as the second specified value.

example 2

[0066] Example 2. The marking rule is: the specified position is different, and the Y value is the same

[0067] The first system chip is configured to mark the Y value of the first designated position in the YUV frame data collected by the first camera as a first designated value based on the marking rule corresponding to the first camera, and mark the Y value of the first designated position in the YUV frame data collected by the first camera. The Y value at the second specified position in the YUV frame data collected by the second camera is marked as the first specified value.

example 3

[0068] Example 3. The marking rule is: the specified position is different, and the Y value is different

[0069] The first system chip is configured to mark the Y value of the first designated position in the YUV frame data collected by the first camera as a first designated value based on the marking rule corresponding to the first camera, and mark the Y value of the first designated position in the YUV frame data collected by the first camera. The Y value at the second specified position in the YUV frame data collected by the second camera is marked as the second specified value.

[0070] It can be seen from this that this embodiment aims at the problem of how to accurately distinguish whether a certain frame of data belongs to camera1 or camera2 at the SOC B side, by configuring different marking rules for each camera, and the first system chip according to the marking rules. The frame data collected by the camera is marked to accurately distinguish which camera a certain ...

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Abstract

An embodiment of the invention provides a multi-channel image data transmission system, method and equipment. The system comprises a first system chip which is used for collecting frame data of original images of a plurality of cameras and sending the frame data to the same conversion chip through an HDMI, and correspondingly marking the frame data of different cameras according to agreement before the frame data is sent to the conversion chip; a conversion chip which is used for converting the HDMI signal output by the first system chip into an MIPI signal and transmitting the MIPI signal to a second system chip; and the second system chip which is used for analyzing the mark of each frame of data according to an agreed marking rule, determining the camera to which each frame of data belongs, and acquiring image data corresponding to each camera. Therefore, a scheme that a single conversion chip transmits multi-channel camera data can be realized, the second system chip can acquire the multi-channel camera data by using a single ISP, the camera to which the frame data belongs can be accurately distinguished, and the method has the advantages of saving time consumption and memory overhead and having no loss of frame rate.

Description

technical field [0001] This document relates to the field of computer technology, in particular to a multi-channel image data transmission system, method and device. Background technique [0002] In existing camera image data transmission between dual operating systems, image resolution, frame rate, compression rate and transmission speed are strongly related. The usual method is to reduce the image resolution, or reduce the image frame rate, or increase the lossy compression rate of the image, or use a combination to reduce the transmission amount of image data per unit time, so that the target system cannot obtain high resolution and high resolution. Uncompressed raw image data. [0003] If the original image data is transmitted uncompressed, the image transfer protocol is usually used to convert the chip. First, the camera image data is input into the conversion chip, and then the conversion chip outputs it to the target system for transmission. However, usually one conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N7/08H04N5/14
CPCH04N7/01H04N7/0806H04N5/14
Inventor 徐朝庆何胜远王梁
Owner HANGZHOU HIKVISION DIGITAL TECH