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Method for improving image data acquisition rate of processor

A technology for image acquisition and data rate, which is applied in the field of increasing the image data rate of the processor, can solve the problem of wasting bus acquisition rate, etc., and achieve the effect of increasing the effective data transmission rate, reducing the amount of data, and increasing the effective data rate

Pending Publication Date: 2021-11-12
北京君正集成电路股份有限公司
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Problems solved by technology

[0004] Although the two-dimensional code scanning equipment uses a color sensor, the actual two-dimensional code is black and white data. The main thing to be collected is grayscale data rather than color. When the data format YUV4:2:2 data format is used for transmission, half of the data It is unnecessary U data and V data, which wastes the acquisition rate of the bus

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  • Method for improving image data acquisition rate of processor
  • Method for improving image data acquisition rate of processor
  • Method for improving image data acquisition rate of processor

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Embodiment Construction

[0030] In order to understand the technical content and advantages of the present invention more clearly, the present invention will be further described in detail in conjunction with the accompanying drawings.

[0031] The invention relates to a method for increasing the rate of image data collected by a processor. Before the processor collects image data, the method utilizes the two-frequency sampling of the pixel clock PCLK transmitted by the sensor to only sample the Y data, and not sample the U data and V data. , that is, the U data and V data are removed before the processor collects the data, and the processor will process it after receiving all the data, and extract the Y data, that is, grayscale data, as image data.

[0032] Such as Figure 4 As shown, the method further includes the following steps:

[0033] S1, using the logic truth table of the D flip-flop as a two-frequency divider circuit, pulled high all the time, the Connected to D, that is, the level of M...

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Abstract

The invention provides a method for improving the image data acquisition rate of a processor, which comprises the following steps of: before the processor acquires image data, only sampling Y data and not sampling U data and V data by utilizing two-frequency-division sampling of a sensor transmission pixel clock PCLK, namely, removing the U data and the V data before the processor acquires the data; and enabling the processor to process all the data after receiving the data, and extract Y data, namely gray data, as image data. The method is simple and easy to operate, the logic circuit is used for controlling the sampling clock so as to control and collect the effective data Y, the data volume to a processor interface is reduced, and the effective data transmission rate is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent video processing, in particular to a method for increasing the rate at which a processor collects image data. Background technique [0002] At present, there are devices for collecting image data on the market, and the processing of the collected image data is usually performed by a processor inside the device, such as a two-dimensional code scanning device. The scanning device uses a color sensor (sensor) and a black and white sensor, most of which use the YUV color coding method. The two-dimensional code uses a specific geometric figure to record data symbol information in black and white graphics distributed on a plane according to certain rules. Therefore, the receiving end, that is, the processor of the two-dimensional code scanning device will process all the data after receiving it, and extract the Y data, that is, the grayscale data, as the image data of the two-dimensional code. [0...

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Application Information

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IPC IPC(8): G06K7/10
CPCG06K7/10821
Inventor 魏芳芳
Owner 北京君正集成电路股份有限公司
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