FPGA-based video frame buffer controller and control method thereof
A controller and video frame technology, applied in the field of image processing, can solve the problems of high power consumption of the video frame buffer controller and inconvenient design for users, and achieve the goals of improving energy utilization, increasing clock frequency and memory bandwidth, and reducing power consumption Effect
Active Publication Date: 2021-06-22
上海先基半导体科技有限公司
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Problems solved by technology
[0005] The object of the present invention is to provide a kind of FPGA-based video frame buffer controller and its control method, to solve the excessive problem of the power consumption of the video frame buffer controller
[0006] Another object of the present invention is to provide a kind of FPGA-based video frame buffer controller and its control method, to solve the need to modify the memory interface and internal control circuit when using different memories as video frame buffer and bring great inconvenience to user design big inconvenience
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[0069] An FPGA-based video frame buffer controller and its control method of the present invention will be further described in detail below. The invention will now be described in more detail with reference to the accompanying drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention described herein and still achieve the advantageous effects of the invention. Therefore, the following description should be understood as the broad knowledge of those skilled in the art, but not as a limitation of the present invention.
[0070] In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions and constructions are not described in detail since they would obscure the invention with unnecessary detail. It should be appreciated that in the development of any actual embodiment, numerous implementation details must be worked ...
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The invention provides an FPGA-based video frame buffer controller and a control method thereof, and the video frame buffer controller comprises a detection configuration control module, a memory control module and a data interaction module. The detection configuration control module is used for obtaining an instant reference clock frequency according to video data received each time, and the memory control module is used for adjusting the clock frequency of the memory connected with the memory control module in real time according to the instant reference clock frequency. And the data interaction module is used for performing video data interaction with the memory through the memory control module. The clock frequency of the memory is adjusted in real time through the memory control module when the low-bit-rate video stream is received, so that the power consumption of the video frame buffer controller is reduced, and the energy utilization rate is improved.
Description
technical field [0001] The invention relates to the field of image processing, in particular to an FPGA-based video frame buffer controller and a control method thereof. Background technique [0002] In the field of image processing, due to the huge amount of data in one frame of image, a special memory is required to cache the image data of each frame. The controller used to control video input, output and storage is called Video Framebuffer (Video Framebuffer) controller. . [0003] There are many types of existing video formats, such as standard definition (720x480), high definition (1280x720), full high definition (1920x1080), 4K ultra high definition (3840x2160) and 8K (7680x4320). Bandwidth is getting higher and higher, resulting in a larger amount of data transmitted per second. Therefore, in order to receive high-resolution, high-bandwidth video data, it is necessary to increase the clock frequency and memory bandwidth of the memory and use more FPGA on-chip RAM (R...
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IPC IPC(8): H04N21/44H04N5/14H04N5/04
CPCH04N21/44004H04N5/14H04N5/04
Inventor 曹捷
Owner 上海先基半导体科技有限公司