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Virtual active image acquisition equipment, data transmission method thereof, storage medium and terminal

A technology of image acquisition equipment and data transmission method, applied in image communication, TV, color TV components and other directions, can solve problems affecting host data reading efficiency, long delay, etc., to reduce internal cache resources and read response. Time, the effect of optimizing pin resources

Pending Publication Date: 2022-05-06
GALAXYCORE SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a data transmission mechanism leads to a relatively long delay after each valid data block is read or the data interval of each frame, which seriously affects the data reading efficiency of the host.

Method used

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  • Virtual active image acquisition equipment, data transmission method thereof, storage medium and terminal
  • Virtual active image acquisition equipment, data transmission method thereof, storage medium and terminal
  • Virtual active image acquisition equipment, data transmission method thereof, storage medium and terminal

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Embodiment Construction

[0030] As mentioned in the background technology, the data transmission mechanism of the existing passive image acquisition device has a relatively long delay after each valid data block is read or the data interval of each frame, which seriously affects the data reading efficiency of the host.

[0031] The inventors of the present application found through analysis that one of the reasons for the above problems is that the read bandwidth of the external host and the write bandwidth of the passive image acquisition device usually do not match in practical applications. This mismatch results in that the host may not be able to respond in time to the read control of the passive image acquisition device. In order to match the read bandwidth of the host, the passive image acquisition device also needs to increase the capacity of its own cache unit as much as possible, resulting in an increase in cost.

[0032] In order to solve the above technical problems, an embodiment of the pr...

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Abstract

The invention discloses virtual active image acquisition equipment and a data transmission method thereof, a storage medium and a terminal. The method comprises the following steps: acquiring a reading bandwidth and a writing bandwidth within a row effective time; and when the read bandwidth in the row valid time is not matched with the write-in bandwidth, inserting invalid data into the transmitted valid data, or continuing to perform data transmission in the row blanking time. Through the scheme of the invention, the external device can be ensured to obtain the required data in time, passive transmission is converted into virtual active transmission, internal cache resources and reading response time of the image acquisition equipment are reduced, and pin resources of the image acquisition equipment are optimized.

Description

technical field [0001] The invention relates to the technical field of image acquisition, in particular to a virtual active image acquisition device, a data transmission method, a storage medium, and a terminal. Background technique [0002] Traditional image acquisition devices can be roughly classified into active image acquisition devices and passive image acquisition devices. Among them, the passive image acquisition device is externally controlled to read data from the pixel array, that is, the host triggers data reading and output. [0003] Since the data reading speed depends on the transmission environment of the external host, the passive image acquisition device is usually equipped with a buffer first-in-first-out queue (First Input First Output, FIFO for short). After the data sampling of the pixel array is processed, there is a buffer FIFO, and the host reads data from the buffer FIFO. [0004] In the data transmission mechanism of the existing passive image ac...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/374H04N5/341
CPCH04N25/40H04N25/76
Inventor 冯挺马小妹
Owner GALAXYCORE SHANGHAI