Driving device and driving method for automatically generating internal latch signals in counting
A technology for automatically generating and driving devices, applied in the direction of instruments, static indicators, etc., to achieve the effect of saving the cost of connecting lines and reducing the space for line wiring design
Inactive Publication Date: 2010-10-06
杰能电子股份有限公司
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[0006] However, the above method of automatically generating the latch signal by using a specific data pattern and frequency signal requires the display panel controller 10 to output a data signal 100 of a specific data pattern so that the driving element 12 can generate the latch signal accordingly.
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[0066] Please refer to figure 2 , is the structure diagram of the display system of the present invention. The system of the present invention can be a serial LED display system, and the display system includes at least one display controller 20 and at least one driving device 22 . The display controller 20 has a frequency signal pin 200, a serial data output 204 and a latch signal pin 206; the driving device 22 has at least a frequency signal pin 200, a serial data input 202, a serial data The output 204 , a latch signal pin 206 and at least one driving current output 208 . In the present invention, the latch signal pin 206 of the driving device 22 can be connected to a high level voltage (Vcc) or a latch signal pin 206 of the display controller 20 .
[0067] Please refer to image 3 , is a schematic block diagram of the internal circuit of the driving device 22 of the present invention. The driving device 22 of the present invention can automatically generate an interna...
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The invention relates to a driving device and a driving method for automatically generating internal latch signals in counting. The driving device for automatically generating internal latch signals in counting comprises a counting cache generating unit, an automatic latch sensing unit, at least one counting cache unit, an automatic latch generating unit and a multiplexer, wherein the counting cache generating unit receives an exterior latch signal and a frequency signal to generate an internal counting cache enabling signal; the counting cache units receive the internal counting cache enabling signal to store amount data of the driving device connected in series and output a counting cache data signal to the automatic latch generating unit; the automatic latch generating unit receives the frequency signal, the internal counting cache enabling signal and the counting cache data signals to generate an internal latch signal; and finally, the multiplexer selects the exterior latch signal or the internal latch signal according to a mode signal.
Description
technical field [0001] The invention relates to a driving device and a driving method, in particular to a driving device and a driving method for counting and automatically generating internal latch signals. Background technique [0002] The driving elements of the traditional display panel are usually arranged in a square array to display the overall planar image, image and video visual information, and each display element represents an independent pixel in the visual information. [0003] In order to save the pin and packaging cost of the drive components, such as Figure 1A as shown, Figure 1A It is a schematic diagram of a control circuit of an existing LED device. Only the data signal 100 and the frequency signal 102 are used between the display panel controller 10 and the drive element 12, and the drive element 12 includes at least one latch signal generator 120, one latch signal 122, and at least one latch register 124 inside. , at least one shift register 126 , a ...
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Inventor 黄启峰王柏跃
Owner 杰能电子股份有限公司