CN105634529A - Intelligent interphone with Bluetooth automatic adaption frequency - Google Patents
Intelligent interphone with Bluetooth automatic adaption frequency Download PDFInfo
- Publication number
- CN105634529A CN105634529A CN201610069997.5A CN201610069997A CN105634529A CN 105634529 A CN105634529 A CN 105634529A CN 201610069997 A CN201610069997 A CN 201610069997A CN 105634529 A CN105634529 A CN 105634529A
- Authority
- CN
- China
- Prior art keywords
- frequency
- bluetooth
- module
- demand
- transmitter receiver
- 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
- 238000004891 communication Methods 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000006978 adaptation Effects 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000006870 function Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 230000005465 channeling Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephone Function (AREA)
Abstract
The invention relates to an intelligent interphone with Bluetooth automatic adaption frequencies. The intelligent interphone comprises an interphone shell; a keyboard and a liquid crystal display screen are arranged on the interphone shell; a main circuit board is mounted in the interphone shell; a main processor is arranged on the main circuit board; the main processor is equipped with an asynchronous communication interface, an input/output interface and a serial peripheral interface; the main processor is in communication connection with an interphone module through the asynchronous communication interface; the main processor is in data connection with external memory through the serial peripheral interface; the main processor is in communication connection with a Bluetooth data module through the asynchronous communication interface; and the main processor outputs audio with a Bluetooth audio module through the input/output interface. The intelligent interphone with Bluetooth automatic adaption frequencies provided by the invention is applicable to the interphone and is advantaged by that the anti-interference capability is strong, particularly, the interferences of interference signals to a relay station can be effectively prevented in a relay communication system, frequency multiplexing can be realized in a small area, and the frequency utilization rate can be improved.
Description
Technical field
The invention belongs to a kind of communication apparatus, particularly a kind of intelligent transmitter receiver with Bluetooth function.
Background technology
Conventional wireless electricity transmitter receiver basic functional principle is divided into three parts. One, emitting portion, voice converts, by modulating signal and modulation circuit, the radio-frequency carrier signal that audio signal produces through phaselocked loop and voltage controlled oscillator (VCO) to launch to, through Hyblid Buffer Amplifier, excitation is amplified, power amplifier, produce specified radio-frequency power, through antenna low pass filter, it is suppressed that harmonic wave, then pass through antenna and launch; Two, receiving part, the signal that amplifies from radio frequency is mixed and generates the first intermediate-freuqncy signal with the first local oscillation signal from phase-locked loop frequency synthesizer circuit at the first frequency mixer place by reception part. First intermediate-freuqncy signal eliminates the noise signal of neighboring trace further by crystal filter. Filtered first intermediate-freuqncy signal enters IF process chip, is again mixed generation the second intermediate-freuqncy signal with the second local oscillation signal, after the second intermediate-freuqncy signal filters useless spurious signal by a ceramic filter, is exaggerated and frequency discrimination, produces audio signal. Audio signal by amplifications, band filter, the circuit such as postemphasis, enter volume control circuit and power amplifier amplify, driving speaker, just can obtain the sound launched; Three, signaling processes, and transmitter receiver micro-control unit (MCU) produces CTCSS/CDCSS signal and adjusts through amplifying, and enters voltage controlled oscillator and is modulated. The low frequency signal obtained after receiving frequency discrimination, a part is filtered shaping through amplifying with infrasonic band filter, enters micro-control unit (MCU), compares with preset value, by the output of its output control audio frequency power amplifier and speaker. If namely identical with preset frequency and infrasonic value, then open speaker, if it is different, then mute speaker. Above-mentioned three parts are the ultimate principles of tradition transmitter receiver, one to one or the premise that can set up of cluster conversation is that the transmitter receiver participating in call needs to arrange on the same frequency, and it is identical with launching subsonics parameter to receive subsonics, what this just brought loaded down with trivial details arranges operation element, easily producing mistake and waste time, transmitter receiver of the present invention is exactly can frequency and reception subsonics are completed with the parameter automatic adaptation launching subsonics by smart bluetooth system.
Summary of the invention
The invention aims to solve the problems referred to above, a kind of intelligent transmitter receiver with bluetooth automatic adaptation frequency is proposed, it is strong that this intelligent transmitter receiver with bluetooth automatic adaptation frequency has capacity of resisting disturbance, the interference of interference signal pair turntable can be effectively prevented especially in transfer communication system, realize channeling in zonule, put forward the feature of high-frequency utilization rate.
It is an object of the invention to be achieved through the following technical solutions: there is the intelligent transmitter receiver of bluetooth automatic adaptation frequency, it is provided with casing, it is characterized in that: described casing is provided with keyboard, LCDs, described casing is built with main circuit board, described main circuit board is provided with primary processor, described primary processor is provided with asynchronous communication interface, input/output interface, Serial Peripheral Interface (SPI), described primary processor is connected with intercommunication module communication by asynchronous communication interface, described primary processor is connected with external memory data by Serial Peripheral Interface (SPI), described primary processor is connected with blue-teeth data module communication by asynchronous communication interface, described primary processor is by input/output interface and the output of Bluetooth audio frequency module audio, described primary processor is connected with keyboard data by input/output interface, described Bluetooth audio frequency module is by the first Audio conversion switch, second Audio conversion switch controls to be connected with intercommunication module, described first Audio conversion switch is circumscribed with mike, described second Audio conversion switch is circumscribed with speaker, described Bluetooth audio frequency module, intercommunication module, blue-teeth data module is circumscribed with antenna, described primary processor, Bluetooth audio frequency module, intercommunication module, blue-teeth data module supplies electrical connection by power module.
Described primary processor adds smart bluetooth system, Bluetooth system has perfect frequency configuration, reception subsonics is arranged, launch the parameter database that subsonics is arranged, one to one or cluster transmitter receiver has only to just can be automatically performed frequency by Bluetooth system, receive subsonics, transmitting subsonics is arranged, when frequency adaptation one to one, any one transmitter receiver can serve as originating end and initiate frequency adaptation demand, another transmitter receiver is then as receiving terminal, originating end send join frequency demand just have prompting at receiving terminal, can select to accept this demand at receiving terminal and still refuse this demand, thus quickly finishing the frequency adaptation work of intercommunication one to one.
Described main circuit board frequency adaptation demand under the cluster environment of one-to-many, any one transmitter receiver can serve as originating end and initiate frequency adaptation demand, all transmitter receivers except secondary are then all as receiving terminal, originating end send join frequency demand just have prompting at receiving terminal, may be selected by accepting this demand at receiving terminal and still refuse this demand, thus being rapidly completed the frequency adaptation work of the cluster intercommunication of one-to-many.
Described main circuit board is furnished with the related application of Android and IOS system, after being matched by bluetooth and mobile phone terminal, can in simple and quick the arranging channel number, transmitting power, tranmitting frequency, reception frequency, launch coding, receive the parameter informations such as decoding of mobile phone application end.
Described main circuit board is provided with bluetooth earphone function and can be answered hung up the telephone by Bluetooth transmission, supports HFP, HSP, PBAP agreement.
Described main circuit board is provided with Baffle Box of Bluetooth function, by Bluetooth transmission can put the cell phone outward on music, support A2DP, AVRCP, OPP agreement.
The present invention adopts subsonics can prevent user in non-group from usurping channel; Capacity of resisting disturbance is strong, can be effectively prevented the interference of interference signal pair turntable especially in transfer communication system; Realize channeling in zonule, put forward high-frequency utilization rate, reach frequency sharing; The selective calling functions such as the group that can realize different group exhales, generally call, simple, convenient and practical, intercommunication function of the present invention completes above-mentioned etc. responsibility operation, particularly subsonics fast and accurately and arranges, and subsonics can prevent user in non-group from usurping channel; Capacity of resisting disturbance is strong, can be effectively prevented the interference of interference signal pair turntable especially in transfer communication system; Realize channeling in zonule, put forward high-frequency utilization rate, reach frequency sharing; The selective calling functions such as the group that can realize different group exhales, generally call, simple, convenient and practical, intercommunication function of the present invention completes above-mentioned etc. responsibility operation fast and accurately.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated:
Embodiment: referring to accompanying drawing 1, there is the intelligent transmitter receiver of bluetooth automatic adaptation frequency, it is provided with casing, described casing is provided with keyboard, LCDs, described casing is built with main circuit board, described main circuit board is provided with primary processor, described primary processor is provided with asynchronous communication interface, input/output interface, Serial Peripheral Interface (SPI), described primary processor is connected with intercommunication module communication by asynchronous communication interface, described primary processor is connected with external memory data by Serial Peripheral Interface (SPI), described primary processor is connected with blue-teeth data module communication by asynchronous communication interface, described primary processor is by input/output interface and the output of Bluetooth audio frequency module audio, described primary processor is connected with keyboard data by input/output interface, described Bluetooth audio frequency module is by the first Audio conversion switch, second Audio conversion switch controls to be connected with intercommunication module, described first Audio conversion switch is circumscribed with mike, described second Audio conversion switch is circumscribed with speaker, described Bluetooth audio frequency module, intercommunication module, blue-teeth data module is circumscribed with antenna, described primary processor, Bluetooth audio frequency module, intercommunication module, blue-teeth data module supplies electrical connection by power module, described primary processor adds smart bluetooth system, Bluetooth system has perfect frequency configuration, reception subsonics is arranged, launch the parameter database that subsonics is arranged, one to one or cluster transmitter receiver has only to just can be automatically performed frequency by Bluetooth system, receive subsonics, transmitting subsonics is arranged, when frequency adaptation one to one, any one transmitter receiver can serve as originating end and initiate frequency adaptation demand, another transmitter receiver is then as receiving terminal, originating end send join frequency demand just have prompting at receiving terminal, can select to accept this demand at receiving terminal and still refuse this demand, thus quickly finishing the frequency adaptation work of intercommunication one to one, described main circuit board frequency adaptation demand under the cluster environment of one-to-many, any one transmitter receiver can serve as originating end and initiate frequency adaptation demand, all transmitter receivers except secondary are then all as receiving terminal, originating end send join frequency demand just have prompting at receiving terminal, may be selected by accepting this demand at receiving terminal and still refuse this demand, thus being rapidly completed the frequency adaptation work of the cluster intercommunication of one-to-many, described main circuit board is furnished with the related application of Android and IOS system, after being matched by bluetooth and mobile phone terminal, can in simple and quick the arranging channel number, transmitting power, tranmitting frequency, reception frequency, launch coding, receive the parameter informations such as decoding of mobile phone application end, described main circuit board is provided with bluetooth earphone function and can be answered hung up the telephone by Bluetooth transmission, supports HFP, HSP, PBAP agreement, described main circuit board is provided with Baffle Box of Bluetooth function, by Bluetooth transmission can put the cell phone outward on music, support A2DP, AVRCP, OPP agreement.
Last it is noted that obvious, above-described embodiment is only for clearly demonstrating example of the present invention, and is not the restriction to embodiment. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without also cannot all of embodiment be given exhaustive. And the apparent change thus extended out or variation are still among protection scope of the present invention.
Claims (6)
1. an intelligent transmitter receiver with bluetooth automatic adaptation frequency, it is provided with casing, it is characterized in that: described casing is provided with keyboard, LCDs, described casing is built with main circuit board, described main circuit board is provided with primary processor, described primary processor is provided with asynchronous communication interface, input/output interface, Serial Peripheral Interface (SPI), described primary processor is connected with intercommunication module communication by asynchronous communication interface, described primary processor is connected with external memory data by Serial Peripheral Interface (SPI), described primary processor is connected with blue-teeth data module communication by asynchronous communication interface, described primary processor is by input/output interface and the output of Bluetooth audio frequency module audio, described primary processor is connected with keyboard data by input/output interface, described Bluetooth audio frequency module is by the first Audio conversion switch, second Audio conversion switch controls to be connected with intercommunication module, described first Audio conversion switch is circumscribed with mike, described second Audio conversion switch is circumscribed with speaker, described Bluetooth audio frequency module, intercommunication module, blue-teeth data module is circumscribed with antenna, described primary processor, Bluetooth audio frequency module, intercommunication module, blue-teeth data module supplies electrical connection by power module.
2. the intelligent transmitter receiver with bluetooth automatic adaptation frequency according to claim 1, it is characterized in that: described primary processor adds smart bluetooth system, Bluetooth system has perfect frequency configuration, reception subsonics is arranged, launch the parameter database that subsonics is arranged, one to one or cluster transmitter receiver has only to just can be automatically performed frequency by Bluetooth system, receive subsonics, transmitting subsonics is arranged, when frequency adaptation one to one, any one transmitter receiver can serve as originating end and initiate frequency adaptation demand, another transmitter receiver is then as receiving terminal, originating end send join frequency demand just have prompting at receiving terminal, can select to accept this demand at receiving terminal and still refuse this demand, thus quickly finishing the frequency adaptation work of intercommunication one to one.
3. the intelligent transmitter receiver with bluetooth automatic adaptation frequency according to claim 1, it is characterized in that: described main circuit board frequency adaptation demand under the cluster environment of one-to-many, any one transmitter receiver can serve as originating end and initiate frequency adaptation demand, all transmitter receivers except secondary are then all as receiving terminal, originating end send join frequency demand just have prompting at receiving terminal, may be selected by accepting this demand at receiving terminal and still refuse this demand, thus being rapidly completed the frequency adaptation work of the cluster intercommunication of one-to-many.
4. the intelligent transmitter receiver with bluetooth automatic adaptation frequency according to claim 1, it is characterized in that: described main circuit board is furnished with the related application of Android and IOS system, after being matched by bluetooth and mobile phone terminal, can in simple and quick the arranging channel number, transmitting power, tranmitting frequency, reception frequency, launch coding, receive the parameter informations such as decoding of mobile phone application end.
5. the intelligent transmitter receiver with bluetooth automatic adaptation frequency according to claim 1, it is characterised in that: described main circuit board is provided with bluetooth earphone function and can be answered hung up the telephone by Bluetooth transmission, supports HFP, HSP, PBAP agreement.
6. the intelligent transmitter receiver with bluetooth automatic adaptation frequency according to claim 1, it is characterised in that: described main circuit board is provided with Baffle Box of Bluetooth function, by Bluetooth transmission can put the cell phone outward on music, support A2DP, AVRCP, OPP agreement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610069997.5A CN105634529B (en) | 2016-02-01 | 2016-02-01 | Intelligent intercom with bluetooth automatic adaptation frequency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610069997.5A CN105634529B (en) | 2016-02-01 | 2016-02-01 | Intelligent intercom with bluetooth automatic adaptation frequency |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105634529A true CN105634529A (en) | 2016-06-01 |
CN105634529B CN105634529B (en) | 2018-09-21 |
Family
ID=56049133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610069997.5A Active CN105634529B (en) | 2016-02-01 | 2016-02-01 | Intelligent intercom with bluetooth automatic adaptation frequency |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105634529B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107959924A (en) * | 2017-11-17 | 2018-04-24 | 西安蜂语信息科技有限公司 | Intercom method for parameter configuration and device |
CN108833999A (en) * | 2018-07-06 | 2018-11-16 | 西安蜂语信息科技有限公司 | Intercom organizing method and device |
CN109787661A (en) * | 2019-03-21 | 2019-05-21 | 达铭实业(宿州)股份有限公司 | A kind of Bluetooth signal high-speed transfer device |
CN110191421A (en) * | 2019-06-13 | 2019-08-30 | 宁波长江电力能源服务有限公司 | A kind of intelligence talkback system |
CN113225720A (en) * | 2021-05-08 | 2021-08-06 | 深圳市威尔健科技发展有限公司 | Bluetooth intercom system |
CN114339712A (en) * | 2021-12-29 | 2022-04-12 | 广州艾美网络科技有限公司 | Wireless microphone pairing method and device and wireless microphone management system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1248489A1 (en) * | 2001-04-06 | 2002-10-09 | Bticino S.P.A. | Concentrator device for consumption remote management systems |
CN201266933Y (en) * | 2008-10-15 | 2009-07-01 | 杨宏星 | Interphone Bluetooth adapter |
CN203968111U (en) * | 2014-05-20 | 2014-11-26 | 成碧天 | A kind of anti-lost intercom based on Bluetooth technology |
CN105227200A (en) * | 2014-07-03 | 2016-01-06 | 杨绪柳 | A kind of anti-lost intercom based on Bluetooth technology |
CN204967900U (en) * | 2015-09-06 | 2016-01-13 | 深圳广目科技有限公司 | Connect to mobile's hands -free intercom of phone |
CN105516839A (en) * | 2014-09-25 | 2016-04-20 | 上海炯歌电子科技有限公司 | Wireless microphone based on Bluetooth transmission technology |
-
2016
- 2016-02-01 CN CN201610069997.5A patent/CN105634529B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1248489A1 (en) * | 2001-04-06 | 2002-10-09 | Bticino S.P.A. | Concentrator device for consumption remote management systems |
CN201266933Y (en) * | 2008-10-15 | 2009-07-01 | 杨宏星 | Interphone Bluetooth adapter |
CN203968111U (en) * | 2014-05-20 | 2014-11-26 | 成碧天 | A kind of anti-lost intercom based on Bluetooth technology |
CN105227200A (en) * | 2014-07-03 | 2016-01-06 | 杨绪柳 | A kind of anti-lost intercom based on Bluetooth technology |
CN105516839A (en) * | 2014-09-25 | 2016-04-20 | 上海炯歌电子科技有限公司 | Wireless microphone based on Bluetooth transmission technology |
CN204967900U (en) * | 2015-09-06 | 2016-01-13 | 深圳广目科技有限公司 | Connect to mobile's hands -free intercom of phone |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107959924A (en) * | 2017-11-17 | 2018-04-24 | 西安蜂语信息科技有限公司 | Intercom method for parameter configuration and device |
CN108833999A (en) * | 2018-07-06 | 2018-11-16 | 西安蜂语信息科技有限公司 | Intercom organizing method and device |
CN109787661A (en) * | 2019-03-21 | 2019-05-21 | 达铭实业(宿州)股份有限公司 | A kind of Bluetooth signal high-speed transfer device |
CN110191421A (en) * | 2019-06-13 | 2019-08-30 | 宁波长江电力能源服务有限公司 | A kind of intelligence talkback system |
CN113225720A (en) * | 2021-05-08 | 2021-08-06 | 深圳市威尔健科技发展有限公司 | Bluetooth intercom system |
CN114339712A (en) * | 2021-12-29 | 2022-04-12 | 广州艾美网络科技有限公司 | Wireless microphone pairing method and device and wireless microphone management system |
CN114339712B (en) * | 2021-12-29 | 2024-05-07 | 广州艾美网络科技有限公司 | Pairing method and device of wireless microphone and wireless microphone management system |
Also Published As
Publication number | Publication date |
---|---|
CN105634529B (en) | 2018-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105634529A (en) | Intelligent interphone with Bluetooth automatic adaption frequency | |
US8249650B2 (en) | Method and system for bluetooth, near field communication and simultaneous FM transmission and reception functions | |
CN204272108U (en) | A kind ofly can support the communicator of ultrashort wave relaying with short-wave radio set intercommunication | |
CN101938284B (en) | Communication device and communication method thereof | |
CN204616044U (en) | Based on the music share system of Bluetooth technology | |
CN103716459A (en) | Audio system having mobile phone and intercom call functions | |
US6085109A (en) | Wireless telephone equipment operating as a cordless and cellular telephone | |
CN201336735Y (en) | Mobile phone with talkback function | |
CN201114029Y (en) | Bluetooth earphone possessing wireless broadcasting receiving function | |
US20080096484A1 (en) | Short range wireless communications using FM band communication links and related systems | |
CN201123090Y (en) | Mobile phone monitoring system | |
CN107786688A (en) | Mobile terminal with intercom function | |
CN201708793U (en) | Vehicular wireless frequency modulation interphone circuit | |
KR960012983B1 (en) | Offset down conversion for a two-hand set cordless telephone system | |
CN104602367A (en) | Vehicle earphone radio frequency wireless system | |
CN101083808A (en) | Wireless playing method and system for handset audio | |
CN201774577U (en) | Phone with talkback function | |
CN101312564A (en) | Apparatus realizing music play sharing on mobile device and method thereof | |
CN202586958U (en) | Frequency modulation handheld station provided with automatic power control | |
CN205029660U (en) | Intercom control system for cell -phone | |
CN212875785U (en) | Emergency interphone based on same-frequency relay technology for accident rescue | |
FI81932C (en) | TVAODELAD RADIO TELEPHONE. | |
CN218446400U (en) | Watch capable of short-distance communication | |
RU2804517C1 (en) | Portable wideband radio | |
KR200415707Y1 (en) | FM Transmitter |
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: 20200918 Address after: Room 936, 9 / F, via building, 29 Suzhou street, Haidian District, Beijing 100080 Patentee after: Beijing zhongxunchi Technology Co.,Ltd. Address before: 100035, Xicheng District iron lion Road, Beijing, No. 15, building 5, 1-502 Patentee before: Li Lan |