Refresh rate conversion device, method and display device
A conversion device and refresh rate technology, applied to static indicators, instruments, etc., can solve problems such as data overflow, data loss, and LCD panel display differences, and achieve the effect of reducing abnormalities and preventing data overflow
Active Publication Date: 2020-04-14
KUSN INFOVISION OPTOELECTRONICS
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Problems solved by technology
The refresh rate conversion device 20 receives video signals in real time and converts the output, which is suitable for the processing of various dynamic videos and static images. However, with the continuous improvement of the resolution of liquid crystal panels today, it is limited by the data throughput rate of external high-speed memory. When the data stream is written into the first-in-first-out buffer 202, it is easy to cause a data overflow situation, that is, the input video signal is too late to be written into the external high-speed memory 204 through the first-in-first-out buffer 202, so that the data written into the external high-speed memory 204 is lost ,like figure 1 , so that the output video signal is abnormal and the display of the LCD panel is abnormal.
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[0026] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present disclosure.
[0027] The flow charts and block diagrams in the accompanying drawings illustrate the possible system framework, functions and operations of the methods, systems, and devices of the embodiments of the present invention, and the blocks on the flow charts and block diagrams can represent a module, program segment or just a segment Code, said modules, program segments and codes are all executable instructions for implementing prescribed logical functions. It should also be noted that th...
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The invention discloses a refresh rate conversion device and method and a display device, the refresh rate conversion device comprising: a first conversion module, a first storage module, a filter module, a storage control module, a second storage module, a read module and a second conversion module, wherein the first storage module is used for caching image data across a clock domain and giving a full indication when a predetermined amount of the image data is cached, the filter module is connected between the first conversion module and the first storage module and used for writing the image data from the first conversion module into the first storage module and stopping writing the image data into the first storage module when receiving the full indication from the first storage module. The refresh rate conversion device and method and the display device write a frame of image into a frame buffer within multi-frame time, thereby effectively preventing the loss of the data written into the frame buffer.
Description
technical field [0001] Embodiments of the present invention relate to liquid crystal display technology, and more specifically, to a refresh rate conversion device, method and display device. Background technique [0002] This situation is often encountered in the field of LCD panel testing. A certain LCD panel needs to be driven with a high refresh rate. However, the output capability of the test signal source is limited and cannot meet the expected refresh rate output requirements. At this time, the current signal refresh rate is required. improvement. In the existing solution, such a refresh rate conversion device is realized by a control chip and an external high-speed memory. [0003] However, with the continuous improvement of the resolution of LCD panels nowadays, limited by the data throughput rate of the external high-speed memory, the data stream is likely to cause data overflow when the data stream is written into the first-in-first-out buffer, resulting in the i...
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IPC IPC(8): G09G3/00G09G3/36
CPCG09G3/006G09G3/36
Inventor 施骏周永超刘胜利
Owner KUSN INFOVISION OPTOELECTRONICS