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Multi-digit digital pipe control circuit and method thereof

A technology for controlling circuits and digital tubes, applied to instruments, static indicators, etc., can solve problems such as cost and hardware resources

Inactive Publication Date: 2009-04-08
李舒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-digit digital tube control circuit and method thereof, which can solve the problems of cost and hardware resources when driving multi-digit digital tubes in the prior art

Method used

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  • Multi-digit digital pipe control circuit and method thereof
  • Multi-digit digital pipe control circuit and method thereof
  • Multi-digit digital pipe control circuit and method thereof

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Embodiment Construction

[0037] Below in conjunction with accompanying drawing, the present invention is further described.

[0038] figure 1 As shown, it is a circuit schematic diagram of the segment and bit latches of the present invention where the data input ends are independently separated and the data transmission allowable ends are connected in parallel with digital tubes. It includes digital tube (1), digital tube drive circuit (2), latch drive circuit (3), communication interface (4), transceiver interface circuit (5), microprocessor (6), watchdog circuit (7), memory (8); nixie tube drive circuit (2) comprises segment drive circuit Q1 and bit drive circuit Q2, and it can be made up of triode or other power integrated circuits. The latch drive circuit (3) adopts two latch integrated circuits U1 and U2 as a segment and bit drive interface of a control unit, as shown by the dotted circle; the latch U1 is used as the segment drive input interface of the digital tube , the latch U2 is used as th...

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PUM

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Abstract

The present invention discloses a multi-bit nixietube control circuit and a method thereof. The control circuit comprises a nixietube, the drive circuit of the nixietube, latch drive circuits, a microprocessor and a decoding circuit. The present invention is characterized in that an eight-bit nixietube is used as a control unit of a section or a bit; two latch circuits are respectively used for section drive and bit drive of the nixietube. The method (1) comprises: the data input terminals of section latches and bit latches are independent and separate and are connected with the data transmission permission terminals in parallel, the data transmission permission terminals are directly connected with the microprocessor or connected the microprocessor by the decoding circuit. The method (2) comprises: the data input terminals of the section latches and the bit latches are connected in parallel, and the data transmission permission terminals are independent and separate; the independent and separate data transmission permission terminals of the sections and the bits are respectively connected with the microprocessor; the data signals of the section latches and bit latches of each control unit respectively drive the corresponding nixietube by the drive circuit of the nixietube. The method solves the problem of high cost when the multi-bit nixietube is driven or a plurality of LEDs are used for imaging.

Description

Technical field [0001] The present invention relates to a method for controlling the instruction of variable information, more specifically, relates to a multi-bit nixie tube control circuit and its method. Background technique [0002] At present, the display method of controlling the digital tube is generally dynamic display or static display; the driving method: some are directly driven by a single-chip microcomputer, but it takes up a large amount of communication input / output interface I / O, and the number of bits driven is not many; some use The digital tube decoding circuit is combined with the single-chip microcomputer drive, but the number of bits driven is also very small; there is also a more advanced control method that is driven by a dedicated chip for the digital tube with a serial communication interface. This method occupies less interface I / O, and a piece of this This kind of chip can generally drive 4-8 digital tubes, such as the special chip of model SAA106...

Claims

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Application Information

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IPC IPC(8): G09G3/14
Inventor 李舒
Owner 李舒
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