Low-memory video frame rate adjusting method

An adjustment method and video image technology, applied in the direction of selective content distribution, standard conversion, electrical components, etc., to save storage space and ensure system stability

Inactive Publication Date: 2016-01-27
宏晶微电子科技股份有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

But when the video conversion is less than the usual storage space, the image will release a large area of ​​image flicker or line flicker

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] The method of the present invention comprises the following steps:

[0027] Step 1, set a storage space of size M in the memory, which is reserved for video frame rate adjustment, and M is slightly larger than the pixel storage capacity of one frame of image. The M value can be obtained by referring to the calculation of delay and storage space;

[0028] Step 2, generate the driving clock of the output image, the output image and the input image need to be obtained from the same source clock, or the output clock is generated from the input clock through the PLL. With the same source of clo...

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Abstract

The present invention discloses a low-memory video frame rate adjusting method, relates to the field of video signal processing in the microelectronics design field, especially relates to a method for converting a source image frame frequency into a target image frame frequency under the condition of saving memory spaces, and aims to solve the technical problem of providing a video transmission method which saves memory spaces through strict sequential control and data storage delay without any image quality sacrifice and under the condition of ensuring system stability. Through strict sequential control and data storage delay and spatial calculation, the memory space is saved by half without any image quality sacrifice and under the condition of ensuring system stability.

Description

technical field [0001] The invention relates to the field of video signal processing in the field of microelectronic design, in particular to a method for converting the source image frame rate into the target image frame rate under the condition of saving storage space. Background technique [0002] There are multiple standards and frame rates for video transmission. In theory, one frame of image storage space can just complete the frequency frame conversion, but in actual situations, there will be many reasons why the theoretical relationship cannot be realized, including data reading, caching, control and interface, etc., which will cause delays in data transmission, resulting in There is no guarantee that data writing is faster than data reading. When video transmission needs to span different standards, video frame rate conversion becomes an essential step. In the current video conversion method, at least 2 frames of storage space are required for saving the image no ...

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Application Information

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IPC IPC(8): H04N21/44H04N21/438H04N7/01
Inventor 王军刘江
Owner 宏晶微电子科技股份有限公司
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