A frequency mixing recording shielding device and its realization method

A technology of shielding device and implementation method, which is applied in the direction of communication interference, electrical components, etc., can solve the problems of few types, poor shielding effect, and poor practicability, and achieve good confidentiality, high coverage, and reduced electromagnetic radiation volume effect

Active Publication Date: 2018-04-06
TOEC ANCHEN INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a frequency mixing recording shielding device and its implementation method. In order to overcome the shortcomings of the existing white noise interference technology and single electromagnetic radiation interference technology, the invention adopts a more effective and advanced frequency mixing technology to realize In order to shield all kinds of recording equipment, it solves the problems that the existing recording shielding equipment covers few types of equipment, poor shielding effect, and poor practicability. See the following description for details:

Method used

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  • A frequency mixing recording shielding device and its realization method
  • A frequency mixing recording shielding device and its realization method
  • A frequency mixing recording shielding device and its realization method

Examples

Experimental program
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Effect test

Embodiment 1

[0061] A recording shielding device for frequency mixing, see figure 2 , image 3 and Figure 4 , the recording shielding device includes: a baseband control module 1, a baseband generation module 2, a password application module 3, a signal shaping and amplifying module 4, a transmitting module 5 and a power supply module 6.

[0062] Baseband control module 1 comprises: baseband control chip 11, first power supply chip 12 and second power supply chip 13; Baseband generation module 2 comprises: baseband generator 21 and baseband amplifier 22; Password application module 3 comprises: random number generation Unit 31 and encryption unit 32; signal shaping and amplifying module 4 includes: filter shaping unit 41, power secondary amplifier 42 and impedance gain adjuster 43; transmitting module 5 includes: low frequency transmitter 51 and high frequency transmitter 52.

[0063] The base frequency generator 21 includes: a low frequency DDS (Direct Digital Synthesis) generator 211...

Embodiment 2

[0077] A kind of realization method of the recording shielding device of frequency mixing, see Figure 5 and Figure 7 , the realization method of this recording shielding device comprises: the realization method of low-frequency shielding signal emission,

[0078] The implementation method of the low-frequency shielding signal transmission specifically includes the following steps:

[0079] (1) The recording shielding device is powered on, and the baseband control chip 11 detects the power-on process to complete the selection of configuration and working mode;

[0080] (2) The baseband control chip 11 judges the power supply mode, if it is an external power supply, then perform step (4), if it is a lithium battery power supply, then perform power detection, and perform step (3);

[0081] (3) If the power is higher than the threshold, then perform step (4), otherwise enter battery protection processing, and the process ends;

[0082] (4) The baseband control chip 11 control...

Embodiment 3

[0092] A kind of realization method of the recording shielding device of frequency mixing, see Figure 6 and Figure 8 The implementation method of the recording shielding device specifically includes: the implementation method of high-frequency shielding signal transmission, the implementation method of this high-frequency shielding signal transmission includes the following steps:

[0093] (1) The recording shielding device is powered on, and the baseband control chip 11 detects the power-on process to complete the selection of configuration and working mode;

[0094] (2) The baseband control chip 11 judges the power supply mode, if it is an external power supply, then perform step (4), if it is a lithium battery power supply, then perform power detection, and perform step (3);

[0095] (3) If the power is higher than the threshold, then perform step (4), otherwise enter battery protection processing, and the process ends;

[0096] (4) The baseband control chip 11 controls...

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PUM

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Abstract

The invention discloses a mixing-based recording shielding device and a realizing method thereof. The mixing-based recording shielding device comprises a base band control module, a base frequency generator module, a cryptoraphic application module, a signal shaping amplifier module and a transmitter module and further includes that a base band control chip is connected with a low-frequency DDS generator and a low-frequency amplifier, the base band control chip is connected with a high-frequency surface acoustic wave filter and a high-frequency amplifier, the base band control chip is connected with a random number generation unit, the base control chip is connected with an encrypting unit, the low-frequency amplifier and the high-frequency amplifier are respectively connected with a filtering shaping unit, the shaping filter unit is sequentially connected with a secondary power amplifier and an impedance gain adjusting device, and the impedance gain adjusting device is respectively connected with a low-frequency transmitter and a high-frequency transmitter. The device can transmit signals through the low-frequency transmitter or the high-frequency transmitter to form mixing interference so as to interfere an audio device. The mixing-based recording shielding device has the advantages of a wide application range, high shielding effect, high security and high practicability and is capable of meeting multiple use purposes.

Description

technical field [0001] The invention belongs to the technical field of recording shielding, and in particular relates to a frequency mixing recording shielding device and a realization method thereof. Background technique [0002] Information security is the lifeline of an enterprise, a department and even the entire country. If confidential information is leaked, no matter the country, government department, enterprise or even individual will suffer immeasurable losses. At present, with the increasingly advanced recording technology and the increasingly powerful functions of recording equipment, more and more people use voice recording equipment to carry out illegal activities. At present, there is no effective solution for voice recording leaks at home and abroad. How to intercept various recordings equipment, an effective voice shielding device is urgently needed to solve this problem and protect the security of voice information. [0003] Recording shielding device, al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04K3/00
Inventor 吕前进高友胡双喜姚嘉杨才山李一良刘建贞
Owner TOEC ANCHEN INFORMATION TECH
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