Printed circuit board for information safety protection

A printed circuit board and information security technology, which is applied to printed circuit components and other directions, can solve problems such as attack, high cost, and complex processing technology, and achieve the effect of reducing manufacturing cost and difficulty and improving space utilization

CN103917038AInactive Publication Date: 2014-07-09HUANDA COMPUTER (SHANGHAI) CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-07-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a printed circuit board for information safety protection. The printed circuit board includes a top layer, a plurality of conductive inner layers, a plurality of dielectric layers, a vertical snakelike winding, a first horizontal snakelike winding, a second horizontal snakelike winding, a bottom layer and a hollow part. The first horizontal snakelike winding and the second horizontal snakelike winding are arranged horizontally at two adjacent conductive inner layers and are mutually vertical in extending directions. The vertical snakelike winding is vertically located between two adjacent conductive inner layers in the plurality of conductive inner layers so that a vertical protection network is formed. A horizontal protection network is formed through the two mutually vertical horizontal snakelike windings and the vertical protection network and the horizontal protection network form a network mask which encloses important areas of a core circuit board so that a multi-directional protection function is realized.
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Description

[0001]

Technical field

[0002] The invention relates to a printed circuit board, in particular to an information security protection printed circuit board for multi-directional protection of a core circuit board against illegal attacks.

Background technique

[0003] With the development of technology, it has become more and more popular for people to use POS machines for consumption. However, while the use of POS machines brings convenience to consumers, it also brings risks. The biggest loss is the phenomenon of bank cards being stolen. At present, there are many POS anti-theft technologies on the market, mainly in the way of encryption and decryption on some software. However, pure encryption and decryption measures are easy to be cracked by external attacks. Therefore, a flexible circuit board with serpentine windings has been developed to further achieve the purpose of anti-theft. By covering this flexible circuit board on the core circuit, when an illegal attack...

Examples

Embodiment Construction

[0018] Figure 1-6 Shown is a preferred embodiment of the information security protection circuit board 1 of the present invention. Such as Figure 1-3 As shown, the information security protection circuit board of the present invention includes a top layer 11, a first dielectric layer 21, a first conductive inner layer 12, a second dielectric layer 22, a second conductive inner layer 13, and a third dielectric layer Layer 23, a fourth conductive inner layer 14, a fourth dielectric layer 24, a bottom layer 16 and a hollow portion 30.

[0019] Such as figure 1 As shown, several pads 110 are provided on the upper surface of the top layer 11 for connection with the core circuit board to be protected, so that interference signals from the core circuit board can be transmitted to the safety protection circuit of the present invention through the pads 110 plate. In this embodiment, the core circuit board to be protected is taken as an example of a main board of a POS machine.

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