A method of receiving and displaying images with different frame rates
An image and frame rate technology, applied in the field of image processing, can solve problems such as incorrect image display, read and write conflicts, and waste of cache space
Active Publication Date: 2021-03-05
四川长九光电科技有限责任公司
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Problems solved by technology
The commonly used ping-pong operation is suitable for receiving and displaying at the same frequency, and the general asynchronous method either wastes a lot of buffer space, or has read and write conflicts or incorrect image display.
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[0019]All features disclosed in this specification, or the steps in all methods or processes disclosed, in addition to the features and / or steps of mutual rejection, can be combined in any manner.
[0020]Any of the features disclosed in this specification unless otherwise specified, it can be replaced by other equivalent or similar purposes. That is, unless specifically described, each feature is only an example of a series of equivalents or similar features.
[0021]In order to make the objectives, technical solutions and advantages of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the controller here will be FPGA, and the memory can be inside the FPGA, or an plug-in memory, which is an external DDR3. DETAILED DESCRIPTION OF THE INVENTION The present invention is not intended to limit the invention.
[0022]A method of receiving different frame rate images in thi...
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The invention relates to the field of image processing, and discloses a method for receiving images with different frame rates for display. Including: step 1, the receiving unit receives the data packet, and parses the data packet according to the agreed format, decomposes the image data and status data, and writes the image data into the asynchronous RxFIFO; step 2, according to the receiving unit data frequency and memory Read and write speed, use the IP core to generate asynchronous RxFIFO; step 3, the memory control unit performs read and write operations on the memory: during the write operation, the memory control unit reads data from the previous asynchronous RxFIFO, and writes it into the corresponding address space of the memory; read operation When, the memory control unit reads data from the corresponding address space and writes it into the asynchronous TxFIFO of the latter stage; Step 4, according to the reading and writing speed of the memory and the display unit display frame rate, use the IP core to generate the asynchronous TxFIFO; Step 5, display control The unit outputs image data according to display requirements. The frame image display method of this scheme is suitable for various transmission modes and transmission protocols.
Description
Technical field[0001]The present invention relates to the field of image processing, in particular a method of receiving different frame rate images.Background technique[0002]Receiving different frame rate images, display belonging to the image processing display, now multiple images, such as CameralLink, USB, SRIO, etc., and the frame rate can be changed as needed, such as 50 Hz is 150 Hz, and display The frame frequency is unchanged, in order to adapt to the display of different occasions, how to be reasonable cache becoming the key. Commonly used ping-pong operations apply to the case where the frequency of display frame rate is received, and the general asynchronous mode is not a large wasting cache space, which is where the read and write conflict or the image display is incorrect. The present invention aims to reduce waste of storage spaces through scientific caching design, and do not cause read and write conflicts to achieve the correct display of the image.Inventive content...
Claims
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IPC IPC(8): G06F3/14G06T1/00G06T1/60
CPCG06F3/1407G06T1/0007G06T1/60
Inventor 蒋艳玲徐国涛刘波
Owner 四川长九光电科技有限责任公司