Display control circuit and time pulse generator
A display control and generator technology, applied in static indicators, instruments, etc., can solve the problems of increasing circuit area and cost, and achieve the effect of reducing occupied space and area
Active Publication Date: 2010-02-17
PRINCETON TECH CORP
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Problems solved by technology
[0006] In the traditional vacuum fluorescent display control circuit, since the display units in different areas need different clock signals to control the brightness, it is necessary to use multiple clock controllers in the circuit design to output multiple different clock signals, which increases the The area and cost of the circuit, therefore, how to effectively reduce the area and cost of the circuit has become an important topic in the design of the vacuum fluorescent display control circuit
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[0021] see figure 1 , figure 1 A display control circuit applied to a vacuum fluorescent display of a preferred embodiment of the present invention, such as figure 1 As shown, the display control circuit 1 is used to control the display unit (not shown) of the vacuum fluorescent display, including a data generation circuit 11, an image signal generator 12, a control signal generator group 13 and a clock signal generator 14, wherein the control In this embodiment, the signal generator group 13 includes 8 control signal generators 131 - 138 , which are respectively used to control 8 groups of different display units.
[0022] The data generation circuit 11 is coupled to the image signal generator 12 for outputting image data 111, and the image signal generator 12 is coupled to each control signal generator 131-138 in the control signal generator group 13 for receiving the image After the data 111 is processed, a plurality of image signals 121-128 are correspondingly output to ...
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The present invention relates to a display control circuit and a clock pulse generator for the display control circuit; the display control circuit is applicable to vacuum fluorescent display screensto control a plurality of display units, and comprises: an image signal generator, designed to produce a plurality of image signals; a clock pulse signal generator, designed to generate a clock pulsesignal, wherein, the clock pulse signal generator comprises a plurality of cascaded triggers and a plurality of logical gates; and a plurality of control signal generators, designed to output a control signal respectively according to the received image signal and the clock pulse signal; wherein, the control signals generated by the control signal generators have different duty ratios. The displaycontrol circuit and the clock pulse generator described in the present invention can reduce the number of clock pulse generators and thereby reduce the cost, and can reduce the footprint of circuit components and effectively reduce the footprint of the chip.
Description
technical field [0001] The invention relates to a display control circuit, especially a display control circuit for a vacuum fluorescent display. Background technique [0002] With the development of the information society, more and more communication or living tools include display devices to facilitate human life. [0003] At present, the most common display device is Liquid Crystal Display (LCD), which is commonly used in mobile phones, home TVs, computer screens and various electronic appliances. The scope of application of liquid crystal displays is getting wider and wider, but due to the characteristics of the backlight of liquid crystal displays, the liquid crystal display will have the problem of unclear identification in high-brightness environments, such as under the sun, so for some For the screen used, LCD is not a good choice. [0004] Compared with liquid crystal displays, vacuum fluorescent displays (Vacuum Fluorescent Display) have the characteristics of h...
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IPC IPC(8): G09G3/22
Inventor 周彦云
Owner PRINCETON TECH CORP