Backlight multi-partition brightness statistical method and device based on FPGA

Abstract

The invention relates to a backlight multi-partition brightness statistical method and device based on an FPGA. The statistical method comprises the following steps: acquiring V-By-One signal input; recovering line and field synchronization according to the V-By-One signal, recovering a data effective signal and recovering pixel data; processing the line-field synchronization, the data effective signal and the pixel data to obtain a brightness result; carrying out pixel data compensation correction and brightness result processing according to the brightness result; packaging the pixel data after line and field synchronization and compensation, and outputting a V-By-One signal; and sending the processed brightness result to a backlight control panel to realize backlight brightness control. According to the invention, the logic resource consumption of the FPGA on the partition backlight control mainboard can be greatly reduced, and tens of thousands of partition backlight processing can be effectively met; in addition, according to the method, the overall cost of the multi-partition backlight television is reduced, software upgrading is flexible, the interface universality is high, and the multi-partition backlight television can be in adaptive butt joint with different types of 4K / 8K mainboards.

Description

technical field [0001] The present invention relates to the technical field of backlight multi-region luminance statistics, in particular to an FPGA-based method and device for backlight multi-region luminance statistics. Background technique [0002] At present, high resolution / high frame rate and high dynamic range (HDR) have become the performance indicators that manufacturers in the field of video display are scrambling to chase. Backlight is an important part of the LCD display principle. For the most part, Local Dimming can achieve precise control of the backlight of each frame image area, reduce TV power consumption, greatly improve the contrast of TV display images, and achieve shocking terminal HDR display effects. The number of partitions has increased from dozens of before When it develops to mini LED, it can be used in large-size 4K / 8K TVs ranging from hundreds to tens of thousands of partitions. Such a large number of partitioned backlights poses a very high ch...

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Problems solved by technology

[0004] At present, almost all FPGA solutions are adopted for high partition backlight algorithm control in the market, mainly because of the high cost of chip tape-out, but the current demand for high-end models in the market has not yet reached the million-level consumption, which is in a state of high investment and low return. At the same time, the high chip price also hinders the promotion of the product; however, FPGA has high flexibility and strong parallel processing ability to adapt to different partition scenarios, and at the same time, it uses the built-in Transceiver high-speed serial transceiver in FPGA to realize V-By-One image transmission , so as to realize the perfect docking and interconnection with the TV motherboard and TCON board

[0005] As the number of backlight partitions increases, the traditional backlight multi-partition statistical method takes up more and more resources. It must be implemented with a larger FPGA, which is not conducive to cost control.

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