CN1080757A

CN1080757A - Electronic code device

Info

Publication number: CN1080757A
Application number: CN 92109255
Authority: CN
Inventors: 徐祖武; 黄国兰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-06
Filing date: 1992-08-06
Publication date: 1994-01-12

Abstract

The present invention is a kind of electronic code device that can be used as product marking.It is made up of password sign and Discr..Its password sign selects the ROM (read-only memory) of circuit, output circuit and given predetermined character code to constitute by the unit, and Discr. is made of microprocessor, LCD and the Chinese character base that stores the standard Chinese character graphic code.This device is because the password sign adopts integrated circuit, and, thereby be difficult for copying the security performance height with the Discr. cooperating, and volume is little, in light weight, cost is low, can intuitively show, thereby can be widely used in product, certificate sign or other place that need tell truth from falsehood.

Description

Electronic code device

The present invention is product marking, is specially a kind of electronic code device.

Existing product all is with pattern as a token of, generally is to distinguish manufacturer or to distinguish its true and false by pattern (shape and color and luster).Because the pattern sign is easy to copy, and human eye its small differences that intuitively is not easily distinguishable, difficulty brought thereby give to tell truth from falsehood.

The objective of the invention is to overcome the shortcoming of prior art, a kind of novel product sign-electronic code device of copying, being easy to discern of being difficult to is provided.

Electronic code device is made up of password sign and Discr..Its password sign selects circuit, output circuit and the given ROM (read-only memory) of deciding character code of giving to constitute by the unit, and is integrated among the circuit; Its Discr. constitutes by storing with microprocessor, the LCD of the given character code memory address of ROM (read-only memory) dependent instruction and the Chinese character base that stores the standard Chinese character graphic code.The A1 end of password sign can be connected with the A2 end of Discr., and the B1 end can be connected with the B2 end.

In such scheme, its unit selects circuit can adopt counter commonly used or shift-register circuit; Its ROM (read-only memory) can adopt ROM commonly used or EPROM circuit; Output circuit can adopt shift register commonly used or data selector circuit; Microprocessor can adopt 48 or 51 series monolithics commonly used, and Chinese character base can adopt ROM commonly used or EPROM circuit.

Adopt the electronic code device of such scheme, its characteristics are:

1. because the password sign adopts integrated integrated circuit, and with the Discr. cooperating, so be difficult for copying strong security.

2. according to the electronic code device of same technical scheme design, its Discr. can be general.

3. little, in light weight, the directly perceived demonstration of this device volume, cost are low, so be easy to promote the use of.

This electronic code device both can be used as product marking, also can be used for various certificates or other place that need discern the false from the genuine.

Description of drawings:

Fig. 1 forms block scheme for the password sign.

Fig. 2 forms block scheme for Discr..

Below in conjunction with accompanying drawing this device working condition is made brief description:

The password sign selects circuit, output circuit and the given ROM (read-only memory) of deciding character code of giving to constitute by the unit; Discr. is made of microprocessor, LCD and the Chinese character base that stores the standard Chinese character graphic code.Its password sign Pasting is (for preventing to reuse, Pasting is at the damageable zone of product) on product.

When differentiating work, A1～A2, B1～B2 end can be connected.The corresponding pumping signal in word address is decided in given the giving of ROM (read-only memory) in microprocessor output at this moment and the password sign, transport to the unit by A2～A1 end and select circuit, the corresponding signal controlling ROM (read-only memory) of selecting of circuit output is selected in the unit, make it to give and decide the character code data and transport to microprocessor by output circuit and through B1～B2 end, through the microprocessor decoding processing, drive Chinese character base corresponding Chinese character graphic code is shown on LCD.Such as, giving of ROM (read-only memory) decided the code that character code is " Xifeng " in the password sign, then will show " Xifeng " Chinese character image on the LCD of Discr..Be easy to distinguish its true and false when obviously, utilizing this device or to sell in the commodity warehouse entry inspection.

Experiment shows that the unit in this device password sign selects circuit to adopt counter or shift-register circuit; ROM (read-only memory) adopts ROM circuit or EPROM circuit; Output circuit adopts shift register or data selector circuit; Microprocessor adopts 48 or 51 series monolithics; Chinese character base adopts ROM or EPROM circuit, all can realize foregoing effect.

On the basis of above-mentioned design proposal,, then can further improve the security performance of this device if partly add the pseudo-code generator that constitutes by combinational logic circuit at its password sign.

Claims

1, a kind of electronic code device as product marking, it is characterized in that: it is made up of password sign and Discr., its password sign part selects circuit, output circuit and the given ROM (read-only memory) of deciding character code of giving to form by the unit, and is integrated on the circuit; Discr. gives microprocessor, the LCD of deciding character code memory address dependent instruction and the Chinese character base that stores the standard Chinese character graphic code formed by storing with ROM (read-only memory) is given; The A1 end of password sign can be connected with the A2 end of Discr., and the B1 end can be connected with the B2 end.