CN214154860U - Encryption device for wireless microphone channel - Google Patents
Encryption device for wireless microphone channel Download PDFInfo
- Publication number
- CN214154860U CN214154860U CN202120310439.XU CN202120310439U CN214154860U CN 214154860 U CN214154860 U CN 214154860U CN 202120310439 U CN202120310439 U CN 202120310439U CN 214154860 U CN214154860 U CN 214154860U
- Authority
- CN
- China
- Prior art keywords
- unit
- encryption
- wireless
- transmitting
- ciphertext
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides an encryption device of a wireless microphone channel, which comprises a transmitting encryption end and a receiving decryption end which are wirelessly connected through UHF frequency band, wherein the transmitting encryption end comprises a sound taking unit, an encryption unit and a wireless transmitting unit which are sequentially connected, and the receiving decryption end comprises a wireless receiving unit, a matching unit and a decryption unit which are sequentially connected; the sound-taking unit transmits the analog audio signal to the encryption unit; the encryption unit generates a cipher text and transmits the cipher text to the wireless transmitting unit; the wireless transmitting unit transmits the ciphertext to the wireless receiving unit; the wireless receiving unit receives the ciphertext and sends the ciphertext to the matching unit; the matching unit demodulates the ciphertext and transmits the ciphertext to the decryption unit; the decryption unit receives the ciphertext and parses out the analog audio signal. The encryption device of the wireless microphone channel provided by the utility model can prevent same frequency interference or series frequency, enhance the anti-interference capability of the wireless microphone and improve the user experience; the safety of analog signal transmission is improved to protect the safety of user information.
Description
Technical Field
The utility model relates to a wireless encryption communication field, in particular to encryption device of wireless microphone passageway.
Background
The existing wireless microphone often transmits audio through a direct transmission mode, and the direct audio transmission mode is too simple and does not perform encryption processing, so that the condition that audio signals are illegally stolen easily occurs, information leakage is caused, and the information safety of users is seriously threatened. Meanwhile, the audio signal which is not encrypted is easily interfered by products of the same frequency and different types, even by products of the same frequency and the same type, so that the stability and the reliability of the signal transmission performance of the wireless microphone are influenced, and the user experience is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an encryption device for wireless microphone channel to improve the above problems.
In a first aspect, the utility model provides an encryption device of wireless microphone passageway, encryption device includes transmission encryption end and receiving decryption end, the transmission encryption end includes the unit of getting sound, encryption unit, the wireless transmitting unit that links to each other in proper order, the receiving decryption end includes the wireless receiving unit, matching unit, the decryption unit that link to each other in proper order, through UHF frequency channel wireless connection between wireless transmitting unit and the wireless receiving unit;
a sound obtaining unit: the system comprises an encryption unit, a sound source extraction unit and a sound source output unit, wherein the encryption unit is used for extracting a sound source and transmitting an analog audio signal to the encryption unit;
an encryption unit: the analog audio signal and the encryption information are combined to form combined information, and the encryption unit is used for encrypting the combined information to generate a ciphertext and transmitting the ciphertext to the wireless transmitting unit;
a wireless transmitting unit: sending the ciphertext to a wireless receiving unit through a circulation mode;
a wireless receiving unit: the device is used for receiving the ciphertext sent by the wireless transmitting unit and sending the ciphertext to the matching unit;
a matching unit: the decryption key is used for ciphertext demodulation, matching with the encryption information and transmitting the ciphertext which is successfully matched to the decryption unit;
a decryption unit: and receiving the ciphertext sent by the matching unit and analyzing an analog audio signal.
Preferably, the encryption device further comprises an output unit connected to the decryption unit, and the output unit is configured to receive the analog audio signal analyzed by the decryption unit and restore and output the analog audio signal.
Preferably, the sound-taking unit comprises a pre-emphasis circuit, a first compression chip, a LINE-IN port and a MIC-IN port which are respectively connected with the pre-emphasis circuit, and a first amplifier is connected between the MIC-IN port and the pre-emphasis circuit.
Preferably, the encryption unit is composed of a first MCU module, the first MCU module is connected to the wireless transmission unit through an IIC communication port, and the first MCU module is of a NUC505 type.
Preferably, the wireless transmitting unit includes an IC transmitting module, a first balun, a first low-pass filter, and a transmitting antenna, which are connected in sequence.
More preferably, the model of the IC transmitting module is KT 0646M.
Preferably, the wireless receiving unit includes a receiving antenna, a second low-pass filter, a second balun, and an IC receiving module, which are connected in sequence.
More preferably, the model of the IC receiving module is KT 0656M.
Preferably, the matching unit and the decryption unit are formed by a second MCU module, the second MCU module is in IIC communication connection with the wireless receiving unit, and the second MCU module is of a NUC505 type.
Preferably, the output unit includes a second amplifier, a second compression chip, a de-emphasis circuit, a third amplifier and an output interface, which are connected in sequence.
The technical effects of the utility model are that: the utility model provides an encryption device of a wireless microphone channel, which can prevent same frequency interference or cross frequency in the transmission process and enhance the anti-interference capability of the wireless microphone, thereby improving the stability and the reliability of the performance of the wireless microphone, enlarging the application range and improving the user experience; the safety of analog signal transmission is improved to protect the safety of user information.
Drawings
Fig. 1 is a logic block diagram of an encryption apparatus for a wireless microphone channel according to the present invention;
fig. 2 is a block diagram of a transmitting encryption terminal according to the present invention;
fig. 3 is a block diagram of a receiving decryption end according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides an encryption device of a wireless microphone channel, as shown in figure 1, comprising a transmitting encryption end and a receiving decryption end, wherein the transmitting encryption end comprises a sound taking unit, an encryption unit and a wireless transmitting unit which are sequentially connected, the receiving decryption end comprises a wireless receiving unit, a matching unit and a decryption unit which are sequentially connected, and the wireless transmitting unit is wirelessly connected with the wireless receiving unit through a UHF frequency band;
a sound obtaining unit: the system comprises an encryption unit, a sound source extraction unit and a sound source output unit, wherein the encryption unit is used for extracting a sound source and transmitting an analog audio signal to the encryption unit; the voice fetching unit comprises a pre-emphasis circuit and a first compression chip connected with the pre-emphasis circuit, wherein the first compression chip is an audio compression and expansion chip, and specifically, the model of the first compression chip is NE575 DK; the first compression chip is connected with the first MCU module through the IC transmitting module, and the IC transmitting module is in IIC communication connection with the first MCU module; the sound taking unit further comprises a LINE-IN port and a MIC-IN port which are respectively connected with the pre-emphasis circuit, the MIC-IN port is externally connected with a 1.8V microphone bias voltage and used for supplying power to a microphone, a first amplifier is further connected between the MIC-IN port and the pre-emphasis circuit, and specifically, the first amplifier (a first LNA) is a low noise amplifier.
An encryption unit: the analog audio signal and the encryption information are combined to form combined information, the combined information comprises the encryption information added in front of and behind the analog audio signal at the same time or a plurality of sections of encryption information added after the analog audio signal is sliced, and the units to be decrypted are further transmitted to subsequent equipment after being decrypted. The encryption unit is used for encrypting the combined information to generate a ciphertext and transmitting the ciphertext to the wireless transmitting unit, and specifically, the ciphertext and a carrier wave with the fixed frequency of 30.72KHz are transmitted to the wireless transmitting unit; the encryption unit is composed of a first MCU module, the first MCU module is in IIC communication connection with the wireless transmission unit, and the first MCU module is NUC505 in model.
A wireless transmitting unit: sending the ciphertext to a wireless receiving unit through a circulation mode; the wireless transmitting unit comprises an IC transmitting module, a first balun converter, a first low-pass filter and a transmitting antenna which are connected in sequence, wherein the transmitting antenna is in wireless connection with the receiving antenna through a UHF frequency band; specifically, the IC transmission module has a model number of KT 0646M, as shown in fig. 2.
A wireless receiving unit: receiving a ciphertext transmitted by the wireless transmitting unit, and transmitting the ciphertext to the matching unit; the wireless receiving unit comprises a receiving antenna, a second low-pass filter, a second balun converter and an IC receiving module which are sequentially connected, and the IC receiving module is in communication connection with the second MCU module through IIC. The receiving and decrypting end comprises two wireless receiving units and two output units which are respectively connected with the second MCU module and the output interface, and the two paths of wireless receiving units simultaneously receive signals transmitted by the wireless transmitting unit to realize a one-to-two mode, as shown in fig. 3.
A matching unit: the decryption key is used for ciphertext demodulation, matching with the encryption information and transmitting the ciphertext which is successfully matched to the decryption unit; the matching unit demodulates the encrypted signals, matches the decryption key with the encrypted information, transmits the decryption key to the decryption unit and analyzes the analog audio signals contained before the information encryption so as to transmit the analog audio signals to subsequent equipment if the decryption key is matched, and does not transmit the information to the decryption unit if the decryption key is not matched.
A decryption unit: and receiving the ciphertext sent by the matching unit and analyzing the analog audio signal, specifically, after receiving the ciphertext successfully matched by the decryption unit, removing the encrypted information header and analyzing the analog audio signal. The matching unit with the decryption unit comprises the second MCU module, the second MCU module with connect through the IIC communication between the wireless receiving unit, specifically, the model of second MCU module is NUC505, IC receiving module's model is KT 0656M.
The encryption device also comprises an output unit connected with the decryption unit, and the output unit is used for receiving the analog audio signal analyzed by the decryption unit and outputting the analog audio signal after restoring the analog audio signal. The output unit comprises a second amplifier, a second compression chip, a de-emphasis circuit, a third amplifier and an output interface which are sequentially connected, wherein the second amplifier (a second LNA) and the third amplifier (a third LNA) are specifically low-noise amplifiers; the second compression chip is an audio compression and expansion chip, and particularly, the model of the second compression chip is NE575 DK.
In summary, the utility model provides an encryption device of wireless microphone channel, which can prevent same frequency interference or cross frequency in the transmission process by the setting of encryption unit, matching unit and decryption unit, and enhance the anti-interference ability of wireless microphone, thereby improving the performance stability and reliability of wireless microphone, enlarging the application range and improving the user experience; the safety of analog signal transmission is improved to protect the safety of user information.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The encryption device for the wireless microphone channel is characterized by comprising a transmitting encryption end and a receiving decryption end, wherein the transmitting encryption end comprises a sound taking unit, an encryption unit and a wireless transmitting unit which are sequentially connected;
a sound obtaining unit: the system comprises an encryption unit, a sound source extraction unit and a sound source output unit, wherein the encryption unit is used for extracting a sound source and transmitting an analog audio signal to the encryption unit;
an encryption unit: the analog audio signal and the encryption information are combined to form combined information, and the encryption unit is used for encrypting the combined information to generate a ciphertext and transmitting the ciphertext to the wireless transmitting unit;
a wireless transmitting unit: sending the ciphertext to a wireless receiving unit through a circulation mode;
a wireless receiving unit: the device is used for receiving the ciphertext sent by the wireless transmitting unit and sending the ciphertext to the matching unit;
a matching unit: the decryption key is used for ciphertext demodulation, matching with the encryption information and transmitting the ciphertext which is successfully matched to the decryption unit;
a decryption unit: and receiving the ciphertext sent by the matching unit and analyzing an analog audio signal.
2. The encryption device for the wireless microphone channel according to claim 1, further comprising an output unit connected to the decryption unit, wherein the output unit is configured to receive the analog audio signal analyzed by the decryption unit and output the analog audio signal after restoring the analog audio signal.
3. The encryption apparatus for wireless microphone channel according to claim 1, wherein the sound-fetching unit comprises a pre-emphasis circuit, a first compression chip, a LINE-IN port and a MIC-IN port respectively connected to the pre-emphasis circuit, and a first amplifier is connected between the MIC-IN port and the pre-emphasis circuit.
4. The encryption device for the wireless microphone channel according to claim 1, wherein the encryption unit is composed of a first MCU module, the first MCU module is connected with the wireless transmission unit through an IIC communication port, and the first MCU module is NUC505 in model.
5. The encryption device for the wireless microphone channel according to claim 1, wherein the wireless transmitting unit comprises an IC transmitting module, a first balun, a first low-pass filter, and a transmitting antenna, which are connected in sequence.
6. The encryption apparatus of wireless microphone channel of claim 5, wherein the IC transmission module is KT 0646M.
7. The encryption device for the wireless microphone channel according to claim 1, wherein the wireless receiving unit comprises a receiving antenna, a second low pass filter, a second balun and an IC receiving module which are connected in sequence.
8. The encryption apparatus of wireless microphone channel of claim 7, wherein the IC receiving module has model number KT 0656M.
9. The encryption device for the wireless microphone channel according to claim 1, wherein the matching unit and the decryption unit are formed by a second MCU module, the second MCU module is in IIC communication connection with the wireless receiving unit, and the second MCU module has a model number of NUC 505.
10. The encryption apparatus for wireless microphone channel according to claim 2, wherein the output unit includes a second amplifier, a second compression chip, a de-emphasis circuit, a third amplifier, and an output interface, which are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120310439.XU CN214154860U (en) | 2021-02-03 | 2021-02-03 | Encryption device for wireless microphone channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120310439.XU CN214154860U (en) | 2021-02-03 | 2021-02-03 | Encryption device for wireless microphone channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214154860U true CN214154860U (en) | 2021-09-07 |
Family
ID=77554281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120310439.XU Active CN214154860U (en) | 2021-02-03 | 2021-02-03 | Encryption device for wireless microphone channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214154860U (en) |
-
2021
- 2021-02-03 CN CN202120310439.XU patent/CN214154860U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104602364B (en) | The method and wireless device, intelligent terminal of wireless device connection wireless access point | |
| US10142141B2 (en) | Method and apparatus of transmitting signal | |
| CN102843677A (en) | Voice communication method, device and system | |
| KR20060022739A (en) | The communication apparatus using the human body with the medium and method for the same | |
| KR920704485A (en) | Signal information communication device and method | |
| CN207234973U (en) | Video conferencing system based on quantum cryptography | |
| CN116366347A (en) | Secure transmission method and device for signaling and SE chip | |
| KR20090128305A (en) | Human body communication apparatus allowing noncontact and human body communication method allowing noncontact in the apparatus using frequency selective baseband | |
| CN107797122B (en) | Beidou national security terminal module and security encryption method | |
| CN214154860U (en) | Encryption device for wireless microphone channel | |
| CN105120457B (en) | A kind of Mobile Communication Circuit domain audio processing apparatus and method | |
| Mondal et al. | Application of Advanced Encryption Standard on Real Time Secured Voice Communication using FPGA | |
| US7522730B2 (en) | Universal microphone for secure radio communication | |
| CN204615904U (en) | A kind of audio signal transmission encryption system and mobile terminal | |
| CN112954673A (en) | Encryption method for wireless microphone channel | |
| CN208924218U (en) | A kind of intercom based on block chain technology | |
| CN202818616U (en) | Voice communication device and system | |
| CN112600799A (en) | Encryption system and operation mode for data transmission | |
| CN214959530U (en) | Encryption air radio station with grouping function | |
| WO2001022643A2 (en) | Card device for wireless data communication | |
| CN108551386A (en) | A kind of method and device by voice channel transmitting digital signals | |
| CN105933893A (en) | Data encryption system for bluetooth headset intercom system | |
| CN112887336B (en) | Communication safety protection method and device | |
| TWI387294B (en) | Wireless data security transmission system with zigbee chips | |
| CN116300653A (en) | Mobile terminal data acquisition module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |