Data compression and decompression method and device, equipment and medium

A data compression and decompression technology, which can be used in digital video signal modification, electrical components, code conversion, etc., and can solve problems such as loss of accuracy

Pending Publication Date: 2021-12-03
SHANGHAI SANSI ELECTRONICS ENG +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The image data or video data displayed by LED has the characteristics of retaining details when the gray value is small, and can lose some precision when the gray value is large. Therefore,

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  • Data compression and decompression method and device, equipment and medium
  • Data compression and decompression method and device, equipment and medium
  • Data compression and decompression method and device, equipment and medium

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Embodiment Construction

[0022] Embodiments of the present application are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0023] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic idea of ​​the application, although only the components related to the application are shown in the drawings rather than the number, shape and shape of the com...

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Abstract

The invention provides a data compression and decompression method and device, equipment and a medium. The data compression and decompression method comprises the following steps: determining the digit of an initial bit of a data gray value and the digit of a to-be-compressed compression bit; the compression bits are divided into multiple bits of high bits and basic bits of low bits, and the bits of the basic bits are determined according to the compression precision requirement and a compression bit numerical calculation formula; compressing the data of the initial bit into the data of the compression bit according to the bit number of the basic bit; and/or decompressing the data of the compression bit into the data of the original initial bit according to a compression bit numerical calculation formula. The method is suitable for compressing and decompressing gray data to be displayed by an LED according to the characteristics that human eyes are very sensitive to details of a dark part of an image displayed by the LED and details of a bright part are not easy to perceive; according to the method, some precision can be lost when the gray value is large, normal display is not affected, and all details are reserved when the gray value is small.

Description

technical field [0001] The invention relates to the field of gray value data compression and decompression technology and LED display technology, in particular to a data compression and decompression method, device, equipment and medium. Background technique [0002] As a new type of display technology, LED display has gradually been accepted by the market due to its advantages of energy saving, environmental protection, and high brightness, and has been widely used in urban media, urban traffic electronic signage and other fields. [0003] At present, there is a bandwidth bottleneck in the communication between the core board and the LED display module. Generally speaking, the gray value of the pixel color signal of each LED display module is 16 bits, and each pixel has RGB three color signals, and the amount of data transmission at one time is too large. The image data or video data displayed by LED has the characteristics of retaining details when the gray value is small...

Claims

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Application Information

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IPC IPC(8): H03M7/30H04N19/42H04N19/44
CPCH03M7/55H04N19/42H04N19/44
Inventor 陈鸣郑剑李应启刘正强
Owner SHANGHAI SANSI ELECTRONICS ENG
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