CN2794067Y - Enciphering device of key signal in phonetic telecommunication tool - Google Patents
Enciphering device of key signal in phonetic telecommunication tool Download PDFInfo
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- CN2794067Y CN2794067Y CN 200520108764 CN200520108764U CN2794067Y CN 2794067 Y CN2794067 Y CN 2794067Y CN 200520108764 CN200520108764 CN 200520108764 CN 200520108764 U CN200520108764 U CN 200520108764U CN 2794067 Y CN2794067 Y CN 2794067Y
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Abstract
The utility model relates to an enciphering apparatus for the key signal in a phonetic telecommunication tool and comprises a telephone main controlling chip, a keyboard matrix and an enciphering chip, wherein the telephone main controlling chip is respectively connected with the keyboard matrix and the enciphering chip. When the phonetic telecommunication tool is a simulation telephone, the main controlling chip abstracts the key information of the keyboard matrix after receiving the enciphering controlling command generated by the keyboard matrix to deliver the key information converted into the digital signal to the enciphering chip. After the enciphering chip enciphers the digital signal, the digital signal is delivered to the main controlling chip. The enciphering signal after the modulation and demodulation is exported by a telephone conversation circuit. The enciphering apparatus for the key signal in a phonetic telecommunication tool can simultaneously carry out the enciphering transmission of the key signal of the telephone in the normal conversation. The enciphering chip is only increased in the telephone circuit. The enciphering apparatus for the key signal in a phonetic telecommunication tool has the advantages of simple structure and good confidential effect.
Description
Technical field
The utility model relates to a kind of device that non-speech audio in the speech communication instrument is encrypted, and relates in particular to the encryption device of the push button signalling of telephone bank's dedicated telephone set.
Background technology
General communication tool (analogue-key and digital keys) also has the transfer function of push button signalling except that basic call function, but the signal transmission all is not pass through deformation process, can both reduce as long as intercept, so these signal transmission all are unsafe.And special data encryptor does not have voice call function.
The utility model content
The purpose of this utility model provides the encryption device of push button signalling in a kind of speech communication instrument, transmits through encryption after push button signalling extracts again in the speech communication function that keeps traditional communication tool again.After signal is transferred to the equipment that the other end has corresponding function, be decrypted reduction, transmit with the safety that reaches push button signalling.
It is as follows that the technical solution of the utility model provides:
The encryption device of push button signalling in a kind of speech communication instrument, this device comprises the phone main control chip, keyboard matrix and encryption chip, described phone main control chip is connected with keyboard matrix and encryption chip respectively.
Wherein, after the encryption control command that described main control chip reception keyboard matrix sends, extract the key information of keyboard matrix, be sent to encryption chip after key information is converted to digital signal, described encryption chip is sent to main control chip after this digital signal is encrypted, and described coded signal is exported by telephone communicating circuit after modulation again.
Wherein, described speech communication instrument is a digital subset; After the encryption control command that described main control chip reception keyboard matrix sends, extract the key information of keyboard matrix, be sent to encryption chip, described encryption chip is sent to main control chip after this digital signal is encrypted, and exports by telephone communicating circuit.
By adopting above technical scheme, can carry out encrypted transmission in normal talking, for the phone push button signalling, and only increase by an encryption chip in the phone circuit, simple in structure, and have good secret effect.
Description of drawings
Fig. 1 is the module diagram of button encryption device;
Fig. 2 is the module diagram of decryption device
The circuit connection diagram of Fig. 3 encryption chip and main control chip;
The software flow pattern of Fig. 4 encrypting and decrypting device.
Embodiment
First embodiment of the present utility model is the encryption device of Telephone set push button signalling, sees also shown in Figure 1ly, and comprising phone main control chip 1 and keyboard matrix 3, and an encryption chip 2, it links to each other with main control chip 1 by 232 serial ports, as shown in Figure 2.
See also Fig. 3, be the software flow pattern of encrypting and decrypting device.The ciphering process of present embodiment is achieved in that we have defined a function key in keyboard matrix 3.When user's off-hook and after pressing this function key, main control chip is a digital signal with the key pulse conversion of signals of extracting, and digital signal is sent to encryption chip 2 by 232 serial ports, encryption chip is passed main control chip 1 back after described digital signal is encrypted, and described coded signal is sent to the other side's receiving equipment by telephone communicating circuit after modulation.Present embodiment adopts the modulation of CCITTU.23FSK agreement to send enciphered message, yet this device is not limited to this kind agreement.When the user did not press function key, this device can be used as general button and uses, and main control chip 1 extracts the key information of keyboard matrix 3, and exported the other side's receiving equipment to by telephone communicating circuit.General keypress function comprises systemic-function setting when not sending a telegram here and off-hook, hands-free processing, the off-hook during incoming call, hands-free processing, the dialing tone processing behind the off-hook, on-hook processing etc.
See also Fig. 2, be the module diagram of decryption device.Comprising main control chip 1 and coupled encryption chip 2.
The decrypting process of this decryption device is as shown in Figure 4: main control chip 1 is behind off-hook, to detect incoming telephone signal, if detecting is the information of CCITTU.23FSK agreement modulation, then think active data, and will being sent to encryption chip 1 after this data modem, encryption chip 2 exports main control chip 1 to after data decryption is reduced to digital signal, main control chip is again with this digital signal reduction, to reach the purpose that safety transmits key information.
Second embodiment of the present utility model is the encryption device of mobile phone key signal, and its module connection layout is identical with the encryption device of Telephone set push button signalling, as shown in Figure 1.And encryption chip is also identical with first embodiment with the circuit connection of main control chip, as shown in Figure 2.
The ciphering process of mobile phone key signal is achieved in that when user's off-hook and after pressing this function key, main control chip extracts the key information of keyboard matrix, be sent to encryption chip by 232 serial ports, described encryption chip is sent to main control chip after this digital signal is encrypted, and exports by telephone communicating circuit.
The decrypting process of mobile phone key signal is sent to encryption chip by main control chip and is decrypted reduction after being achieved in that main control chip 1 is received the coded signal that the other side sends, and outputs to (as LCD display) on the relevant device by the main control chip conversion again.
Among the above embodiment, the model of encryption chip is SSX11, certainly, if select for use the encryption chip of other model also can implement the present invention.In addition, encryption chip and main control chip also can adopt other connected mode.This device is mainly used in the button of telephone bank's dedicated telephone set and encrypts, deciphers, and it is applicable to the various speech communication instruments that have button.Be that its button that not only can be used for analog telephone is encrypted, be applicable to the numeric phone keys encryption too.
It more than is preferred embodiment of the present utility model.But, allly do not break away from equalization that the utility model scope of patent protection done and revise and change, all should be considered as the utility model and further implement situation.
Claims (3)
1, the encryption device of push button signalling in a kind of speech communication instrument is characterized in that this device comprises the phone main control chip, keyboard matrix and encryption chip, and described phone main control chip is connected with keyboard matrix and encryption chip respectively.
2, encryption device according to claim 1 is characterized in that, described speech communication instrument is an analog station; After the encryption control command that described main control chip reception keyboard matrix sends, extract the key information of keyboard matrix, be sent to encryption chip after key information is converted to digital signal, described encryption chip is sent to main control chip after this digital signal is encrypted, and described coded signal is exported by telephone communicating circuit after modulation again.
3, encryption device according to claim 1 is characterized in that, described speech communication instrument is a digital subset; After the encryption control command that described main control chip reception keyboard matrix sends, extract the key information of keyboard matrix, be sent to encryption chip, described encryption chip is sent to main control chip after this digital signal is encrypted, and exports by telephone communicating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520108764 CN2794067Y (en) | 2005-06-06 | 2005-06-06 | Enciphering device of key signal in phonetic telecommunication tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520108764 CN2794067Y (en) | 2005-06-06 | 2005-06-06 | Enciphering device of key signal in phonetic telecommunication tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2794067Y true CN2794067Y (en) | 2006-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520108764 Expired - Fee Related CN2794067Y (en) | 2005-06-06 | 2005-06-06 | Enciphering device of key signal in phonetic telecommunication tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2794067Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009018684A1 (en) * | 2007-08-08 | 2009-02-12 | Kamfu Wong | The keyboard for encrypting and authenticating against trojan horse with one time key |
| CN103297399A (en) * | 2012-03-01 | 2013-09-11 | 董建飞 | Method and system for improving safety of intelligent secret key equipment |
-
2005
- 2005-06-06 CN CN 200520108764 patent/CN2794067Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009018684A1 (en) * | 2007-08-08 | 2009-02-12 | Kamfu Wong | The keyboard for encrypting and authenticating against trojan horse with one time key |
| CN101933315B (en) * | 2007-08-08 | 2014-03-26 | 黄金富 | The keyboard for encrypting and authenticating against trojan horse with one time key |
| CN103297399A (en) * | 2012-03-01 | 2013-09-11 | 董建飞 | Method and system for improving safety of intelligent secret key equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060705 Termination date: 20110606 |