Scanning LED display screen drive and control device and method

A technology of LED display and preset mode, which is applied in the direction of static indicators, instruments, etc., and can solve the problem of darkening the first scan of the scanning LED display

Active Publication Date: 2014-04-23
XIAN NOVASTAR TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, in order to overcome the problem that the first scan of the LED display screen is dark in the p

Method used

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  • Scanning LED display screen drive and control device and method
  • Scanning LED display screen drive and control device and method
  • Scanning LED display screen drive and control device and method

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Embodiment Construction

[0018] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Figure 4 It is a schematic diagram of functional modules of a scanning LED display drive control device according to an embodiment of the present invention. Such as Figure 4 As shown, the scanning LED display drive control device 10 implements the gray scale of the gray scale data of the input video signal through the subfield method, which includes: a subfield part arrangement module 11 and a subfield part realization sequence arrangement module 13 .

[0020] Wherein, the subfield part arrangement module 11 is used to arrange and divide the total number of subfields required for each grayscale realization corresponding to the plurality of grayscale data into a plurality of subfield parts. Assuming that different subfields a...

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Abstract

The invention relates to a scanning LED display screen drive and control device and method. The drive and control device is suitable for being applied in an M-scanning LED display screen. The drive and control device comprises: a sub-field portion arrangement module for arranging and dividing the total sub-field number required by realizing each gray corresponding to multiple gray data into N sub-field portions; and a sub-field portion implementation sequence permutation module for determining the implementation sequence for each gray corresponding to the multiple gray data to realize the corresponding N sub-field portions according to the default permutation mode, the N sub-field portions are assumed to be characterized by N different arrangement numbers separately, and the sub-field portion including partial or all sub-fields occupied by same data bits in the corresponding gray data are characterized by a same arrangement number, then the default permutation mode is that M sub-field portions realized in each M scanning process at least in part have different arrangement numbers. Thus, the device and method of the invention can be used to effectively solve the problem that the first scanning is dark when a low-gray picture is displayed in the prior art.

Description

technical field [0001] The invention relates to the technical field of display control, in particular to a scanning LED display drive control device and method. Background technique [0002] The traditional scanning LED display using on-off driver chips can see the problem of darkening the first scan when displaying low grayscale images, and the increase in the number of scans or the refresh rate of the LED display will aggravate this problem. The reason for this problem is as follows: [0003] At present, the grayscale display of the scanning LED display is realized through subfields. Each subfield sends a certain 1bit (bit) of grayscale data, and then realizes the corresponding weight of the bit by controlling the opening time of the output channel of the driver chip. Usually, in order to improve the refresh rate of the scanning LED display, it is not to achieve the gray level of a certain line before realizing the gray level of the next line, but to divide the total numb...

Claims

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Application Information

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IPC IPC(8): G09G3/32
Inventor 梁伟
Owner XIAN NOVASTAR TECH
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