CN104715532A - Electronic coded lock system based on visible light communication technique and encryption method of system - Google Patents
Electronic coded lock system based on visible light communication technique and encryption method of system Download PDFInfo
- Publication number
- CN104715532A CN104715532A CN201510161226.4A CN201510161226A CN104715532A CN 104715532 A CN104715532 A CN 104715532A CN 201510161226 A CN201510161226 A CN 201510161226A CN 104715532 A CN104715532 A CN 104715532A
- Authority
- CN
- China
- Prior art keywords
- information
- signal
- control center
- module
- password
- 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.)
- Granted
Links
Landscapes
- Lock And Its Accessories (AREA)
- Input From Keyboards Or The Like (AREA)
- Storage Device Security (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses an electronic coded lock system based on the visible light communication technique and an encryption method of the system, belonging to the technical field of electronic coded locks. According to the method, encrypted messages are transmitted through a free space optical channel by adopting an LED array. The system of the method is designed into two parts of an electronic lock module and an optical key module, wherein an information storage center of the optical key module is used for storing ciphers and ID information, and encoded ciphers and ID information are transmitted in a manner of optical signals through the LED array; the electronic lock module is used for setting and changing ciphers and receiving the optical signals sent by the optical key module through a PIN array so as to realize signal processing, cryptographic checking, an alarming function or unlocking operation. The electronic lock encryption is realized through the method, and the method not only has the advantage of higher security classification of encryption, but also has the characteristics of no radiofrequency radiation, strong antijamming capacity and strong reliability.
Description
Technical field
The invention belongs to electronic password lock technical field, relate to a kind of based on the electronic coding lock system of visible light communication technology and the encryption method of this system, LED array and special encryption method namely can be utilized to realize the electronic lock encryption method that level of confidentiality is high, anti-theft good, stability is strong.
Technical background
Electronic password lock a kind of comes control circuit or chip operation (access control system) by Password Input, thus control the closed of mechanical switch, complete unblank, the electronic product of locking task.Electronic password lock is core with single-chip microcomputer, is equipped with corresponding hardware circuit, completes the setting of password, storage, identification and display, driving electromagnetic actuator detect its driving current value, alerting signal that receiving sensor is sent here, send the functions such as data.At security technology area, electronic password lock becomes main flow already, almost instead of traditional mechanical code lock.Because the electronic password lock with anti-theft alarm function overcomes, mechanical code lock number of password is few, the shortcoming of poor safety performance, makes coded lock all greatly improve a step technically or in performance.
Current known electronic password lock form of authentication mainly contains 4 kinds:
1, direct cipher authentication, uses this coded lock must input correct code.This lock generally provides a keyboard, and each input password all can have response voice, and the pattern length of password is generally 4-6 position.This authentication mode security is low, and anti-theft capability is poor.
2, digital scanning certification, this authentication mode needs to scan, and as smart card or similar " swiping the card ", but traditional magnetic stripe card magnetic track information is easily replicated, and there are major safety risks.
3, biometric authentication, bio-identification use in the security system gets more and more.Some new electronic locks utilize biotechnology, as finger scan, retina scanning, iris scan, Application on Voiceprint Recognition, carry out authentication to user.Although bio-identification strong security, have the feature of uniqueness, its requirement condition is general stricter.Such as fingerprint recognition, the humidity of opponent requires relatively tighter, also more stiff to the identification pointing the position of putting; Just same finger at last, if the position of putting during input is different, just likely can recognition failures.
4, radio frequency identification (RFID), also known as radio frequency identification, reads and writes related data by radio signals identification specific objective, and without the need to setting up machinery or optical contact between recognition system and specific objective.This technology is also used in modern electronic password lock.But some radio-frequency (RF) tag is attached on clothing, personal effects, this just may read personal information when permitting without me, and therefore this technology also can invasion of privacy.
Summary of the invention
Due to the feature that visible light communication technology has without radio-frequency radiation as a kind of wireless light communication technology with high traffic rate, antijamming capability is strong, security is high, reliability is strong, in view of these characteristics and advantages of visible light communication technology, visible communication technology is applied in electronic lock encryption, not only can improve encryption level of confidentiality, and good concealment.Adopt the mode certification of hiding password, effectively can avoid the shortcoming of four kinds of authentication modes in prior art, therefore the object of the invention is the deficiency in order to overcome existing electronic lock authentication mode, a kind of electronic lock encryption method based on visible light communication technology is provided.
In order to achieve the above object, the technical solution used in the present invention is:
Based on an electronic coding lock system for visible light communication technology, this system comprises electronic lock module and optical key module two parts;
Electronic lock module, comprise optical signal detecting circuit, signal processing circuit, tripper, touch screen module, LED drive circuit, information memory cell and control center seven part, control center is for controlling optical signal detecting circuit, signal processing circuit, touch screen module and tripper co-ordination; Information memory cell is for storing password and the id information of user's setting; Optical signal detecting circuit, comprises PIN pipe array and signal amplifier circuit, for the light signal sent from LED array in optical key module received is converted to electric signal; Signal processing circuit, comprise decision circuit and coding-decoding circuit, decision circuit is " 1 " or " 0 " for adjudicating the current signal of optical signal detecting circuit transmission, and the electric signal that can supply coding-decoding circuit process is reverted to by filter and amplification, the coded portion of coding-decoding circuit is used for password and id information coding, and decoded portion is used for electric signal to be decoded into ID or encrypted message; Tripper, comprises electromagnetic lock and warning horn two parts, and the electromagnetic lock in the controlling heart realizes electromagnetism unblock under controlling, warning horn is used for the warning of illegal unblock behavior; Touch screen module realizes the mutual of user and electronic coding lock system, enables the self-defined password of user and id information; Information memory cell is used for the storage of the new data produced in original password that user arranges and id information and system;
Optical key module, comprise LED array, data line and electric source line interface and information storage center, can realize optical information to send after being connected with electronic lock module, the LED drive circuit in electronic lock module controls the visible light signal that LED array sends high speed scintillation; Information storage center is for depositing password and the id information of user's setting.
The encryption method of above-described electronic coding lock system, specifically comprises the following steps:
1st, optical key module be combined by data and power interface with electronic password lock, LED array is aimed at PIN pipe array;
2nd, user realizes the self-defined of encrypted message and ID by touch screen operation, and the password of user and id information are preserved by control center; Meanwhile, the information storage center that password and id information are sent to optical key module via data-interface is preserved by control center;
3rd, control center controls LED drive circuit, scrambler co-ordination, and the id information of recalls information storage center, be binary data by coder transitions, and the form that these data change with LED array light intensity is sent, the light intensity signal of PIN pipe array received LED array, be translated into electric signal, control center's control signal treatment circuit changes out id information, and the decoding id information of ID original in comparison information storage unit and new write, if both are inconsistent, then control center calls warning horn and to give the alarm sound; If both are identical, then control center reads the encrypted message being present in information storage center in module in optical key;
4th, control center controls LED drive circuit, scrambler co-ordination, and the encrypted message of recalls information storage center, be binary data by coder transitions, and the form that these data change by force with each LED light in LED array is sent, each encrypted message is sent by a corresponding LED, the light intensity signal of PIN pipe array received LED array, each PIN pipe receives only the light signal that the LED corresponding with it launches, and be translated into electric signal, code signal is recovered again through signal transacting, the code data of password original in information control center comparison information storage unit and new write, if both are inconsistent, then control center calls warning horn and to give the alarm sound, if both are identical, then the electromagnetic lock that control center calls in tripper realizes unlocking operation.
The invention has the beneficial effects as follows:
1, visible light communication technology has higher traffic rate, realizes the method for electronic password lock encryption, has without radio-frequency radiation, antijamming capability is strong, security is high, reliability is strong feature based on this technology.
2, the present invention adopts LED array to improve security.For the LED array of 3*3, namely have 9 LED lamp bead, each lamp pearl, by binary for transmission one 8 passwords, is namely equivalent to optional 9 numerals between 0 to 127 and combines as final password, always have 128
9plant password combination, and LED array is larger, password combination is more, and decryption is also more difficult.
3, each optical key has unique ID.ID can be letter and number combinatorics on words, and length can set arbitrarily.After system verification ID authority, just can continue next step cryptographic verification, disabled user is authorized owing to not having, even if there is correct password also cannot open electronic password lock.This just improves the safe level of confidentiality of system further.
4, adopt touch screen to realize the mutual of user and electronic coding lock system, there is good functions expanding and ease for use.
Accompanying drawing explanation
Fig. 1 is entire system schematic diagram.
Fig. 2 is electronic lock module schematic diagram of the present invention.
In figure: 1. optical key module, 2. electronic lock module, 3. optical signal detecting circuit, 4. signal processing circuit, 5. touch screen module, 6. unlock dress.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
The electronic coding lock system based on visible light communication technology as shown in Figure 1 comprises optical key module 1 and electronic lock module 2, and in releasing process, both are connected with electric source line interface by data line.Wherein the data line of optical key module 1 and electronic lock module 2 is for being bi-directionally connected, and power lead is unidirectional connection.
Optical key module 1 as shown in Figure 1 comprises data line and electric source line interface and the information storage center be bi-directionally connected with it and LED array;
Electronic lock module 2 as shown in Figure 1 comprises optical signal detecting circuit 3, signal processing circuit 4, touch screen module 5, tripper 6, LED drive circuit, information memory cell, data line and electric source line interface, control center.Control center and other various pieces are and are bi-directionally connected.
In electronic lock module schematic diagram as shown in Figure 2, optical signal detecting circuit 3 comprises the amplifier of PIN array and unidirectional connection with it.Signal processing circuit 4 comprises the codec of decision circuit and unidirectional connection with it.Touch screen module 5 comprises the touch screen of touch screen driving circuit and unidirectional connection with it.Tripper 6 comprises electromagnetic lock and warning horn.Control center is bi-directionally connected PIN array, decision circuit, codec, touch screen driving circuit, electromagnetic lock, warning horn, LED drive circuit, information memory cell, data line and electric source line interface respectively.Amplifier is unidirectional connection decision circuit simultaneously; LED drive circuit is bi-directionally connected data line and electric source line interface simultaneously.
Control center coordinates the work of electronic coding lock system each several part under program.
After optical key module is combined with electronic lock module, both data lines are connected with electric source line interface, and optical key module is energized, and can carry out data communication with electronic lock module.Meanwhile, LED array is aimed at PIN pipe array, can transmit visible ray information by optical channel as shown in Figure 1;
During initialization, optical key module is combined with electronic lock module, and user arranges the initial password of optical key and unique ID by touch screen.The electronic lock of tripper and warning horn by password and the id information information storage center of writing light key module and the information memory cell of electronic lock module respectively, and are carried out corresponding condition restriction by control center.Namely in unlocking operation, if optical key module ED information unauthorized or code error, then control center calls warning horn and to give the alarm sound.If optical key module ED information and password are all correct, then control center calls electromagnetic lock and realizes unlocking operation.For the LED array of 3*3, namely have 9 LED lamp bead, each lamp pearl, by binary coded for transmission one 8, be namely equivalent to optional 9 numerals between 0 to 127 and combine as final password, ID can be letter and number combinatorics on words, and length can set arbitrarily.After initialization completes, optical key module is separated with electronic lock module, password and the id information information storage center persistence in optical key module.If change password or id information, only initialization operation need be repeated.
When performing unlocking operation, optical key module and electromagnetically locked mold agllutination are closed, now, optical key module is energized, and can carry out data communication with electronic lock module.Meanwhile, LED array is aimed at PIN pipe array, can transmit information, and PIN pipe array is energized by control center by optical channel as shown in Figure 1.Control center reads the id information being stored in information storage center in optical key module, and is encoded by id information by the coded portion calling codec.Id information after coding is as the input signal of LED drive circuit.Adopt general modulation system, as OOK (On-Off Keying) modulates id information.After modulation, id information is a string time dependent binaryzation strength of current amplitude.With time become the input signal that binaryzation strength of current amplitude is LED drive circuit.Because the luminous intensity of LED affects by input current signal, therefore LED array will produce time dependent binaryzation light intensity signal.When being energized, PIN pipe array can detect that LED array produces time become binaryzation light intensity signal, and be converted into synchronous time dependent binaryzation electric current or voltage signal.After carrying out signal amplification process via amplifier, control center calls decision circuit and electric signal is carried out filter shape process.Electric signal after process is sent to the decoded portion of codec through signal wire, and the heart realizes signal decoding under controlling in the controlling.Simultaneously control center by decoded information stored in the information memory cell of electronic lock module.The decoded data of ID original in last control center comparison information storage unit and new write, if both are inconsistent, then control center calls warning horn and to give the alarm sound; If both are identical, then control center reads the encrypted message being present in information storage center in optical key module.
After ID checking is correct, control center reads the encrypted message being present in information storage center in optical key module.Because the present invention uses LED array, for the LED array of 3*3, namely 9 LED lamp bead are had, each lamp pearl is by binary coded for transmission one 8, namely being equivalent to optional 9 numerals between 0 to 127 combines as final password, through coding, LED drive circuit realizes each LED and sends a password, and 9 LED send 9 passwords altogether.Equally, through coding, LED drive circuit converts electrical signals to light signal, realizes LED to the point-to-point signal transmission with PIN photoelectric tube by optical channel.Namely each PIN photoelectric tube receives the light signal of a corresponding LED, obtains a corresponding password.Light signal is become electric signal by PIN photoelectric tube, then realizes signal recuperation through signal amplification, signal processing circuit.Control center is by the data write signal storage unit after recovery, and the code data of original password and new write in comparison information storage unit.If both are inconsistent, then control center calls warning horn and to give the alarm sound; If both are identical, then the electronic lock that control center calls in tripper realizes unlocking operation.
Claims (2)
1. based on an electronic coding lock system for visible light communication technology, it is characterized in that: this system comprises electronic lock module and optical key module two parts;
Electronic lock module, comprise optical signal detecting circuit, signal processing circuit, tripper, touch screen module, LED drive circuit, information memory cell and control center seven part, control center is for controlling optical signal detecting circuit, signal processing circuit, touch screen module and tripper co-ordination; Information memory cell is for storing password and the id information of user's setting; Optical signal detecting circuit, comprises PIN pipe array and signal amplifier circuit, for the light signal sent from LED array in optical key module received is converted to electric signal; Signal processing circuit, comprise decision circuit and coding-decoding circuit, decision circuit is " 1 " or " 0 " for adjudicating the current signal of optical signal detecting circuit transmission, and the electric signal that can supply coding-decoding circuit process is reverted to by filter and amplification, the coded portion of coding-decoding circuit is used for password and id information coding, and decoded portion is used for electric signal to be decoded into ID or encrypted message; Tripper, comprises electromagnetic lock and warning horn two parts, and the electromagnetic lock in the controlling heart realizes electromagnetism unblock under controlling, warning horn is used for the warning of illegal unblock behavior; Touch screen module realizes the mutual of user and electronic coding lock system, enables the self-defined password of user and id information; Information memory cell is used for the storage of the new data produced in original password that user arranges and id information and system;
Optical key module, comprise LED array, data line and electric source line interface and information storage center, can realize optical information to send after being connected with electronic lock module, the LED drive circuit in electronic lock module controls the visible light signal that LED array sends high speed scintillation; Information storage center is for depositing password and the id information of user's setting.
2. the encryption method of electronic coding lock system as claimed in claim 1, is characterized in that specifically comprising the following steps:
1st, optical key module be combined by data and power interface with electronic password lock, LED array is aimed at PIN pipe array;
2nd, user realizes the self-defined of encrypted message and ID by touch screen operation, and the password of user and id information are preserved by control center; Meanwhile, the information storage center that password and id information are sent to optical key module via data-interface is preserved by control center;
3rd, control center controls LED drive circuit, scrambler co-ordination, and the id information of recalls information storage center, be binary data by coder transitions, and the form that these data change with LED array light intensity is sent, the light intensity signal of PIN pipe array received LED array, be translated into electric signal, control center's control signal treatment circuit changes out id information, and the decoding id information of ID original in comparison information storage unit and new write, if both are inconsistent, then control center calls warning horn and to give the alarm sound; If both are identical, then control center reads the encrypted message being present in information storage center in module in optical key;
4th, control center controls LED drive circuit, scrambler co-ordination, and the encrypted message of recalls information storage center, be binary data by coder transitions, and the form that these data change by force with each LED light in LED array is sent, each encrypted message is sent by a corresponding LED, the light intensity signal of PIN pipe array received LED array, each PIN pipe receives only the light signal that the LED corresponding with it launches, and be translated into electric signal, code signal is recovered again through signal transacting, the code data of password original in information control center comparison information storage unit and new write, if both are inconsistent, then control center calls warning horn and to give the alarm sound, if both are identical, then the electromagnetic lock that control center calls in tripper realizes unlocking operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161226.4A CN104715532B (en) | 2015-04-07 | 2015-04-07 | A kind of encryption method based on the electronic coding lock system of visible light communication technology and the system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161226.4A CN104715532B (en) | 2015-04-07 | 2015-04-07 | A kind of encryption method based on the electronic coding lock system of visible light communication technology and the system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104715532A true CN104715532A (en) | 2015-06-17 |
| CN104715532B CN104715532B (en) | 2017-06-30 |
Family
ID=53414822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510161226.4A Active CN104715532B (en) | 2015-04-07 | 2015-04-07 | A kind of encryption method based on the electronic coding lock system of visible light communication technology and the system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104715532B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061011A (en) * | 2016-06-02 | 2016-10-26 | 北京印刷学院 | Light emitting diode (LED) constant current remote lighting communication system |
| CN108915381A (en) * | 2018-07-02 | 2018-11-30 | 潘世辰 | A kind of electromagnetism coded lock |
| CN110300995A (en) * | 2017-01-03 | 2019-10-01 | 品谱股份有限公司 | Slow-witted lock assembly with visual feedback |
| CN110855362A (en) * | 2019-11-18 | 2020-02-28 | 南京工程学院 | Secret communication method and system based on visible light LED matrix |
| CN110996443A (en) * | 2019-12-06 | 2020-04-10 | 吴苑 | Burning method and device for address codes of LED lamp beads |
| CN114189336A (en) * | 2021-11-18 | 2022-03-15 | 广西师范大学 | Identity recognition method based on time sequence spectrum |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006188887A (en) * | 2005-01-06 | 2006-07-20 | Miwa Lock Co Ltd | Certifying system in optical communication |
| JP2011208387A (en) * | 2010-03-29 | 2011-10-20 | Miwa Lock Co Ltd | Visible light communication power-generating system |
| CN102790645A (en) * | 2012-06-29 | 2012-11-21 | 深圳光启创新技术有限公司 | Multi-path visible light communication based scrambling and descrambling system and method |
| CN103291138A (en) * | 2012-03-02 | 2013-09-11 | 深圳光启创新技术有限公司 | Light-control door lock system and control method thereof |
| CN103291136A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Intelligent lock system |
| CN103426222A (en) * | 2013-09-09 | 2013-12-04 | 桂林理工大学 | Light-dependent control door guard device |
| CN203982471U (en) * | 2014-07-30 | 2014-12-03 | 许加庆 | Bluetooth both-way communication smart lock |
-
2015
- 2015-04-07 CN CN201510161226.4A patent/CN104715532B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006188887A (en) * | 2005-01-06 | 2006-07-20 | Miwa Lock Co Ltd | Certifying system in optical communication |
| JP2011208387A (en) * | 2010-03-29 | 2011-10-20 | Miwa Lock Co Ltd | Visible light communication power-generating system |
| CN103291136A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Intelligent lock system |
| CN103291138A (en) * | 2012-03-02 | 2013-09-11 | 深圳光启创新技术有限公司 | Light-control door lock system and control method thereof |
| CN102790645A (en) * | 2012-06-29 | 2012-11-21 | 深圳光启创新技术有限公司 | Multi-path visible light communication based scrambling and descrambling system and method |
| CN103426222A (en) * | 2013-09-09 | 2013-12-04 | 桂林理工大学 | Light-dependent control door guard device |
| CN203982471U (en) * | 2014-07-30 | 2014-12-03 | 许加庆 | Bluetooth both-way communication smart lock |
Non-Patent Citations (2)
| Title |
|---|
| 可见光通信技术发展趋势;迟楠;《LED可见光通信技术》;清华大学出版社;20131130;第140-146页 * |
| 迟楠: "《LED可见光通信技术》", 30 November 2013 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106061011A (en) * | 2016-06-02 | 2016-10-26 | 北京印刷学院 | Light emitting diode (LED) constant current remote lighting communication system |
| CN110300995A (en) * | 2017-01-03 | 2019-10-01 | 品谱股份有限公司 | Slow-witted lock assembly with visual feedback |
| CN108915381A (en) * | 2018-07-02 | 2018-11-30 | 潘世辰 | A kind of electromagnetism coded lock |
| CN110855362A (en) * | 2019-11-18 | 2020-02-28 | 南京工程学院 | Secret communication method and system based on visible light LED matrix |
| CN110855362B (en) * | 2019-11-18 | 2021-08-03 | 南京工程学院 | Secret communication method and system based on visible light LED matrix |
| CN110996443A (en) * | 2019-12-06 | 2020-04-10 | 吴苑 | Burning method and device for address codes of LED lamp beads |
| CN110996443B (en) * | 2019-12-06 | 2022-01-11 | 吴苑 | Burning method and device for address codes of LED lamp beads |
| CN114189336A (en) * | 2021-11-18 | 2022-03-15 | 广西师范大学 | Identity recognition method based on time sequence spectrum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104715532B (en) | 2017-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104715532A (en) | Electronic coded lock system based on visible light communication technique and encryption method of system | |
| US10552645B2 (en) | Method for secure communications using NFC cryptographic security module | |
| US20180196973A1 (en) | Security Certification Method for Hiding Ultra-High Frequency Electronic Tag Identifier | |
| KR20160146672A (en) | Portable biometric-based identity device | |
| JPH086520B2 (en) | Remote access system | |
| CN103281299B (en) | A kind of ciphering and deciphering device and information processing method and system | |
| CN105976473A (en) | Photoelectric cloud lock system and unlocking method thereof | |
| CN105894633B (en) | A kind of method of access control system and access control system unlock | |
| CN101333892A (en) | Safety processing method of RFID system for door lock | |
| Chafia et al. | A biometric crypto-system for authentication | |
| CN103810780A (en) | Coded lock based on brain-computer switching technique and encryption and decryption method of coded lock | |
| Govindraj et al. | Smart door using biometric NFC band and OTP based methods | |
| CN106780897B (en) | Intelligent safety lock based on laser identification technology | |
| US20050127172A1 (en) | Access system | |
| CN101436342A (en) | Automobile fingerprint encipher remote controller | |
| CN104700125A (en) | AES encryption and verification of ultra high frequency radio identification system | |
| CN108086806A (en) | A kind of multi-functional antitheft door photoelectric cipher lock system | |
| CN106056726B (en) | It is a kind of can two-way authentication CPU card access-control card reader safety certifying method | |
| CN109979043A (en) | A kind of lockset working method, lockset and key system | |
| CN108843145B (en) | A kind of method for unlocking based on optic communication, electronic lock and electron key | |
| CN109754501A (en) | Method for unlocking and smart lock, the computer readable storage medium of smart lock | |
| KR20160088342A (en) | Method and device for transmitting and receiving instruction information | |
| Ansari et al. | Mechanism to Identify Legitimate Vehicle User in Remote Keyless Entry System | |
| CN104184591B (en) | A kind of TTF authentication methods | |
| CN106846587A (en) | A kind of wireless split intelligent invisible safety-protection system and its implementation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230914 Address after: 300192 Huike Building 1-1-2401-1, Intersection of Anshan West Road and Baidi Road, Nankai District, Tianjin City Patentee after: Tianjin LINGJI Technology Co.,Ltd. Address before: 300071 Tianjin City, Nankai District Wei Jin Road No. 94 Patentee before: NANKAI University |