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Control method for multi-digit LED nixie tubes

A technology of LED digital tube and control method, which is applied in the direction of instruments, static indicators, etc., can solve the problems of not being able to apply multi-bit customized LED display screens, and achieve the effects of simplifying design difficulty, simplifying circuit composition, and reducing manufacturing costs

Active Publication Date: 2012-11-28
CRM ICBG (WUXI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this circuit structure is only applicable to a single LED digital tube, and cannot be applied to a multi-digit customized LED display in which segments (seg) are connected in parallel.

Method used

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  • Control method for multi-digit LED nixie tubes
  • Control method for multi-digit LED nixie tubes
  • Control method for multi-digit LED nixie tubes

Examples

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Embodiment Construction

[0015] This embodiment is an example in which three single chips and four "day."-shaped devices are used in combination to form an 8-segment (seg) 12-bit display device. If 8 output drive port control segments (seg) and 12 output drive port control common ports (com) are required according to the traditional technology, then at least 8seg+12com=20 ​​display drive output ports are required; and figure 2 The existing technology using time-division multiplexing cannot be applied to the above-mentioned multi-digit LED digital tubes connected in parallel.

[0016] By adopting the method of the present invention, a non-fixed common terminal (com) is designed so that a certain number of output drive ports become the common terminal (com) in turn. In this embodiment, since there are 4 display units on a single device, the total number of output drive ports required is the number of units 4 + the number of display segments 8 = 12 output drive ports. Compared with traditional technolo...

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Abstract

The invention discloses a control method for multi-digit LED nixie tubes, and relates to the electronic technology. The LED nixie tubes control segments (seg) and a common end (com) through a time division multiplex drive port; the segments (seg) are lightened circularly under the control of the common end (com) to display different contents; the multi-digit LED nixie tubes are N-digit L-segment parallelly-connected LED nixie tubes, including N nixie tubes; and each of the nixie tubes has the same segment number L. The control method is characterized in that S output drive ports are arranged; while N is a base number of a cycle, the N output drive ports sequentially control the common end (port), and the other output drive ports control the segments (seg); and N is the digit number of the nixie tubes, and S=N+L. The control method for the multi-digit LED nixie tubes can reduce the number of function output ports of the common end for the multi-digit LED nixie tubes, simplify circuit composition and reduce the design difficulty in control integrated circuits.

Description

technical field [0001] The invention relates to a display control technology of LED digital tubes, in particular to a control method for parallel multi-bit LED digital tubes. Background technique [0002] LED digital tube (also known as digital light-emitting tube, light-emitting diode display) is a display device that uses "segment (seg)" as the light-emitting unit to light up and combine. According to different lighting combinations, different content is displayed. The most typical ones are as 8-segment digital display, including the combination of "day" and a decimal point, a total of 8 display units, that is, 8 segments. Although there are fewer display combinations, it can display numbers from 0 to 9, and multiple parallel connections can display multiple digits, which can meet the needs within a certain range. At present, this kind of low-cost LED display solution is often used in the display of VCD, DVD, induction cooker, microwave oven and other small household appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/14
Inventor 丁增伟徐栋叶青朱立群罗先才牛征奚辛茹
Owner CRM ICBG (WUXI) CO LTD
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