Scanning type display device control circuit

A display device and control circuit technology, applied in the field of circuits, can solve problems such as longer time and lower refresh frequency, and achieve the effects of reducing bandwidth, increasing refresh frequency, and avoiding repeated transmission

Active Publication Date: 2011-05-04
MACROBLOCK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, because the time required to display a complete screen

Method used

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  • Scanning type display device control circuit
  • Scanning type display device control circuit
  • Scanning type display device control circuit

Examples

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[0045] The detailed features and advantages of the present invention are described in detail in the following embodiments, and the content is sufficient to enable anyone familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and based on the content disclosed in this specification, the scope of patent application and the drawings Anyone who is familiar with related art can easily understand the related purpose and advantages of the present invention. The following examples further illustrate the viewpoint of the present invention in detail, but do not limit the scope of the present invention by any viewpoint.

[0046] Please refer to figure 1 , Is a structural diagram of the light emitting diode display device 90. The light emitting diode display device 90 is a line scanning type display screen. The LED display device 90 needs to use a switch 92 in conjunction. For example, the light emitting diodes on the light...

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Abstract

The invention provides a scanning type display device control circuit which is suitable for receiving successive frame data and driving a light-emitting diode display device according to the successive frame data. The scanning type display device control circuit comprises a ping-pong storage area, a data storage controller, a row scanning controller, a buffer module and a scattered type pulse width modulation signal generating device. The scanning type display device control circuit can repeatedly and circularly utilize the frame data so as to avoid repeated transmission of mass data. Therefore, the bandwidth required for inputting the data can be greatly reduced. In addition, the scattered type pulse width modulation signal generating device can scatter a pulse width modulation signal with longer cycle into a plurality of scattered type pulse width modulation signal with a shorter cycle, thus refreshing frequency can be effectively improved under the condition of not altering the bandwidth of the input data.

Description

technical field [0001] The present invention relates to a circuit, in particular to a control circuit for a scanning display device. Background technique [0002] In recent years, the manufacturing cost of light-emitting diodes (Light-Emitting Diode, LED) has dropped significantly. Therefore, LED displays have been widely used in various occasions, such as gymnasiums, outdoor billboards, and the like. [0003] Light-emitting diode display devices usually use thousands of light-emitting diodes as display pixels. Pixels showing different brightness respectively can form a picture, and multiple pictures can be presented sequentially in time to form a dynamic image. [0004] These pixels are respectively controlled via the controller. According to the input data, the controller sends on or off signals to the LED driver to control the brightness of the pixels. [0005] Generally speaking, the dynamic image switches about 60 frames per second, that is to say, the switching fre...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/20
Inventor 吴肯唐史富洋
Owner MACROBLOCK INC
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