CN100428264C - Portable radio frequency recognizing read-write machine - Google Patents
Portable radio frequency recognizing read-write machine Download PDFInfo
- Publication number
- CN100428264C CN100428264C CNB2007100985253A CN200710098525A CN100428264C CN 100428264 C CN100428264 C CN 100428264C CN B2007100985253 A CNB2007100985253 A CN B2007100985253A CN 200710098525 A CN200710098525 A CN 200710098525A CN 100428264 C CN100428264 C CN 100428264C
- Authority
- CN
- China
- Prior art keywords
- radio
- frequency
- signal
- processing module
- baseband processing
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Near-Field Transmission Systems (AREA)
Abstract
This invention relates to one portable radio identification reader in radio identification technique field, which comprises radio receive and send module and its connected digital base process module, wherein, the radio receive module adopts double antenna structure machine and radio receiver and the radio emission machine is connected to the emission antenna and the radio receiver machine and receive antenna; the digital base band process module output end is connected to the radio emission machine signal input end and the digital base band process module and radio frequency receiver double connection.
Description
Technical field
The invention belongs to radio-frequency (RF) identification (RFID) technical field, the particularly design of ultrahigh frequency radio frequency identification (RFID) reader.
Background technology
Radio-frequency (RF) identification (RFID) technology is a kind of contactless automatic identification technology, and its ultimate principle is to utilize radiofrequency signal and space coupling and transport property, realizes the automatic identification to static or mobile object.A radio-frequency recognition system generally comprises several sections such as radio-frequency (RF) tag, read write line and main frame.System at first by specific interrogating signal of read write line emission, after radio-frequency (RF) tag is sensed this signal, will provide corresponding answer signal when work; Read write line receives this answer signal and it is handled, and returns to external host or carries out corresponding operating.So just, can obtain being stored in the information in the label, as card number etc.If be loaded with sensor on the label, can also obtain the ambient condition information of label thus, as temperature, pressure, speed etc.And read write line can also carry out write operation to label under the control of main frame, rewrites the information that is stored in the label.
The rfid interrogator that is applied to ultrahigh frequency at present is less, and the price of complete machine costliness, and is bulky, be not easy to carry, and can not unit work.The disclosed read write line of Chinese patent (application number is 200610007966.3) that is entitled as modular type UHF reading writer comprises radio-frequency (RF) receiving and transmission module and control and management module, and radio-frequency (RF) receiving and transmission module comprises rf modulations radiating circuit, radio frequency receiving processing circuit, PLL phase-locked loop circuit, transmitting-receiving buffer circuit, multichannel antenna interface circuit; The control and management module comprises control signal generation circuit, reception A/D convertor circuit, AGC control circuit, RS232 and RS485 and TCP/IP interface circuit and high-speed dsp of control radio circuit work.This read write line need add a upper PC when using.This requires application easy to carry or that only need unit to use for some, such as card sender etc., just seems extremely inconvenient.
Summary of the invention
The objective of the invention is to propose a kind of portable radio frequency recognizing read-write machine, not only have advantages such as cost is low, volume is little, easy to use, and can finish the single-set operation that existing read write line can not be finished for overcoming the weak point of prior art.
The portable radio frequency recognizing read-write machine that the present invention proposes, this read write line comprises radio-frequency (RF) receiving and transmission module and coupled digital baseband processing module, it is characterized in that, described radio-frequency (RF) receiving and transmission module adopts the radio frequency sending set and the radio-frequency transmitter of double-antenna structure, this radio frequency sending set links to each other with emitting antenna, and radio-frequency transmitter links to each other with receiving antenna; The output terminal of this digital baseband processing module links to each other with the signal input part of radio frequency sending set, and the digital baseband processing module is connected with radio-frequency transmitter is two-way simultaneously; Wherein, this radio frequency sending set is used for that read write line need be converted into radiofrequency signal to the command signal that radio-frequency (RF) tag sends and sends; The answer signal that this radio-frequency transmitter is used for radio-frequency (RF) tag is returned to read write line receives, and is handled, and makes it to become the manageable digital signal of digital baseband processing module; This digital baseband processing module is used to produce control signal, and read write line need be to the command signal of radio-frequency (RF) tag transmission, and the signal that receives after handling through radio-frequency transmitter that radio-frequency (RF) tag is returned is further processed, and is uniting when using and to communicate with external host with external host.
Characteristics of the present invention and effect:
But both unit work of read write line of the present invention also can be united use with external host.And structure is simpler, comprise radio-frequency (RF) receiving and transmission module and digital baseband processing module, radio-frequency (RF) receiving and transmission module does not adopt the transmitting-receiving buffer circuit and the multichannel antenna interface circuit of similar above-mentioned modular type UHF reading writer, but adopted double-antenna structure, be that antenna is penetrated in the transmitter sending and receiving, receiver connects receiving antenna.This read write line does not adopt A/D convertor circuit and AGC control circuit yet, but has adopted the structure of operational amplifier and comparer, and cost has reduced a lot.This read write line has adopted the core of single-chip microcomputer as the digital baseband processing module, and does not adopt high-speed dsp, has reduced cost equally.This read write line is RS232 serial ports and USB port with the interface of outside.
Complete machine of the present invention is no more than 200 grams.Can finish and read functions such as card number and read write tag data field at the anti-collision of uhf band, and can in the frequency range of 800MHz～960MHz, carry out the frequency hopping operation, can also use online upgrading during programming (IAP) function realizes using in the application in addition.
This read write line can have two kinds of working methods: a kind of is unit work, and another kind is externally to work under the host computer control.
Description of drawings
Fig. 1 is an one-piece construction block diagram of the present invention.
Fig. 2 is a radio frequency sending set structured flowchart of the present invention.
Fig. 3 is a radio frequency receiver structure block diagram of the present invention.
Fig. 4 is a digital baseband processing module structured flowchart of the present invention.
Fig. 5 is a single-chip microcomputer main program flow block diagram of the present invention.
Embodiment
Below technical scheme of the present invention reached embodiment in conjunction with the accompanying drawings be elaborated:
The one-piece construction of portable radio frequency recognizing read-write machine of the present invention as shown in Figure 1, comprise radio-frequency (RF) receiving and transmission module and coupled digital baseband processing module, described radio-frequency (RF) receiving and transmission module adopts the radio frequency sending set and the radio-frequency transmitter of double-antenna structure, this radio frequency sending set links to each other with emitting antenna, and radio-frequency transmitter links to each other with receiving antenna; The output terminal of this digital baseband processing module links to each other with the signal input part of radio frequency sending set, and the digital baseband processing module is connected with radio-frequency transmitter is two-way simultaneously.Wherein, the function of radio frequency sending set is the signal that the needs that produce in the digital baseband processing module are launched, and promptly read write line need be converted into radiofrequency signal to the command signal that radio-frequency (RF) tag sends and sends.The function of radio-frequency transmitter is that the answer signal that radio-frequency (RF) tag returns to read write line is received, and is handled, and makes it to become the manageable digital signal of digital baseband processing module.The function of digital baseband processing module is the control signal that produces the read write line each several part, and read write line need be to the command signal of radio-frequency (RF) tag transmission, and the signal that receives after handling through radio-frequency transmitter that radio-frequency (RF) tag is returned is further processed, also is included in external host and unites when using and to communicate with external host.
Below the concrete composition embodiment and the function of each module of the present invention further described.
1, radio frequency sending set
Radio frequency sending set structure of the present invention comprises crystal oscillator, frequency synthesizer, power splitter, ASK modulator, power amplifier (PA) and emitting antenna as shown in Figure 2.Its annexation is: the reference frequency input port of the output of crystal oscillator and frequency synthesizer joins, for frequency synthesizer provides reference frequency.The radio frequency output of frequency synthesizer connects the single-ended input port of power splitter.One of two output port of power splitter meet the local oscillator input port LO of radio-frequency transmitter, and another connects the carrier wave input port of ASK modulator.Another input port of ASK modulator is the modulation signal input port, connects the digital signal that the digital baseband processing module is sent here, and its output terminal is received the input port of power amplifier PA.The output port of power amplifier PA is received emitting antenna.
In the present embodiment, crystal oscillator adopts the active crystal oscillator of 13MHz, and frequency synthesizer adopts integrated chip SI4133, and by digital programmable control output frequency, the realization system is in the frequency hopping operation of 800MHz～960MHz.Power splitter has adopted LDB31900M05C-417, and the ASK modulator has adopted HMC195; Power amplifier has adopted a buffer amplifier chip AG503; The dipole antenna that emitting antenna has adopted pcb to print.The operating distance of read write line can reach 80cm.
2, radio-frequency transmitter
Radio-frequency transmitter of the present invention has adopted the quadrature demodulation structure of zero intermediate frequency, comprises receiving antenna, coherent demodulator, operational amplifier and comparer, as shown in Figure 3.Its annexation is: the signal input part and the receiving antenna of coherent demodulator join, and its local oscillator input end LO connects an output terminal of the power splitter of above-mentioned radio frequency sending set, and its output terminal is received the input end of operational amplifier.The input end of the output termination comparer of operational amplifier.The single-chip microcomputer of the output termination digital baseband processing module of comparer.
In the present embodiment, coherent demodulator adopts integrated chip LT5516, does not adopt low noise amplifier (LNA) at its front end.The signal input port of LTS516 and local oscillator input port all adopt the difference input, and the input impedance of two input ports is 200 Ω.The transformer that has respectively met a 1:4 at its two input port places has also been realized the impedance conversion from 50 Ω to 200 Ω as balanced-unbalanced transformer (Balun) (not shown in FIG.) when realizing the conversion from the single-ended signal to the differential signal.The I of LT5516 output orthogonal, the Q two paths of signals, and export with difference form respectively.Its output impedance is 60 Ω, at the ground capacitance of output termination 270pF, thereby obtains the RC low-pass filter that a cutoff frequency is positioned at 10MHz, leaches high frequency interference with this.
The operational amplifier of present embodiment and comparer adopt integrated chip LT6207, and it contains 4 operational amplifiers.The output differential signal of LT5516 adopts the input end that is ac-coupled to first order operational amplifier through low-pass filtering, output single-ended signal after amplifying, and then through the inverting input of DC coupling to second level operational amplifier.Second level amplifier adopts open loop structure, realizes a voltage comparator, and its in-phase input end connects comparative level.Output terminal in second level amplifier obtains digital signal, and this signal will be sent to the digital baseband processing module and be further processed.
3. digital baseband processing module
External interface and hummer and LED that digital baseband processing module of the present invention comprises a single-chip microcomputer, two conversion chips, is made up of RS232 serial ports and USB port, its agent structure as shown in Figure 4, hummer and LED (not illustrating in the drawings).Its annexation is: single-chip microcomputer and two conversion chips, hummer and LEDs join, and two conversion chips connect RS232 serial ports and USB port respectively.
Single-chip microcomputer provides the control signal of total system, comprises initializing signal, enable signal, the frequency hopping command signal of radio frequency transceiver medium frequency synthesizer, the digital input signals of the enable signal of coherent demodulator and ASK modulator; In addition, the answer signal of label need deliver to also after radio-frequency transmitter receive to be handled that single-chip microcomputer is decoded, verification, is judged by single-chip microcomputer then, provides information such as corresponding card number.
In the present embodiment, single-chip microcomputer adopts the P89LPC932A1 single-chip microcomputer of Philips, and the external clock frequency is 12MHz.The workflow of single-chip microcomputer as shown in Figure 5.May further comprise the steps: at first carry out reset operation after powering on, then frequency synthesizer is carried out initialization, this moment, read write line can carry out unit work.If be connected to external host (PC), this moment, PC can be issued an order to read write line, and single-chip microcomputer is judged this order.The order of PC can be divided into two big classes, one class is that read write line is operated, comprise read version information, antenna be set, control power amplifier, IAP software upgrading and frequency of operation pattern (fixed frequency 915MHz or the jump frequency in 800MHz～960MHz frequency range) is set, after finishing dealing with information is returned to main frame; Another kind of is to tag operational, comprise that anti-collision reads card number, reads label data district and writing labels data field, after this operational order sends single-chip microcomputer in the read write line to, single-chip microcomputer sends to radio frequency sending set after encoding by Manchester (Manchester), launch by radio frequency sending set, wait for return signal then; Radio-frequency (RF) tag after receiving this command signal is returned corresponding information, radio-frequency transmitter receives to handle behind this signal that returns and returns to single-chip microcomputer then, single-chip microcomputer carries out the FMO decoding to it, carries out CRC check then, and data correctly then return to PC with it.At work, PC can send IAP upgrading order at any time, and the program in the online rewriting single-chip microcomputer realizes read write line online upgrading in use.Above-mentioned workflow is solidificated in the single-chip microcomputer after can being compiled into computer program by this area routine techniques.
In the present embodiment, under the situation of unit work, when corresponding radio-frequency (RF) tag entered the card-reading zone of this read write line, read write line will be read the card number of this label, put hummer simultaneously and rang, and lighted light emitting diode (LED).That adopt in the present embodiment is common hummer and LED.
In the present embodiment from the single-chip microcomputer to the corresponding interface the conversion of signals of (RS232 serial ports and USB port), adopt two conversion chip MAX3232 and PL2303 to realize, realize communicating by letter of read write line and external host with this.So both can control read write line, also can the label information that read be returned to main frame by read write line by external host.
Above-mentioned all circuit of the present invention can realize on a circuit board that antenna adopts the printed antenna on the circuit board.Have advantages such as cost is low, volume is little, easy to use.
Read write line of the present invention has two kinds of mode of operations: a kind of is unit work, and under this mode of operation, read write line powers on and promptly works, circulation sends the Card Reader instruction, in case there is corresponding radio-frequency (RF) tag to enter the place, just read its card number, provide warning by hummer or LED simultaneously.
Another kind of mode of operation is externally to work under the host computer control.Under this working method, operation is divided into two big classes.One class is to read write line operation, comprise read version information, antenna be set, control power amplifier, IAP software upgrading and frequency of operation pattern (fixed frequency and jump frequency) etc. is set, after finishing dealing with information returned to main frame; Another kind of is to tag operational, read card number, read label and writing labels etc. comprising anti-collision, this operational order sends by Manchester coding back, waits for echo then, enter the Echo Processing module after return data is decoded by FMO and carry out CRC check, data correctly then return to main frame.
Claims (3)
1, a kind of portable radio frequency recognizing read-write machine, this read write line comprises radio-frequency (RF) receiving and transmission module and coupled digital baseband processing module, it is characterized in that, described radio-frequency (RF) receiving and transmission module adopts the radio frequency sending set and the radio-frequency transmitter of double-antenna structure, this radio frequency sending set links to each other with emitting antenna, and radio-frequency transmitter links to each other with receiving antenna; The output terminal of this digital baseband processing module links to each other with the signal input part of radio frequency sending set, and the digital baseband processing module is connected with radio-frequency transmitter is two-way simultaneously; Wherein, this radio frequency sending set is used for that read write line need be converted into radiofrequency signal to the command signal that radio-frequency (RF) tag sends and sends; The answer signal that this radio-frequency transmitter is used for radio-frequency (RF) tag is returned to read write line receives, and is handled, and makes it to become the manageable digital signal of digital baseband processing module; This digital baseband processing module is used to produce control signal, and read write line need be to the command signal of radio-frequency (RF) tag transmission, and the signal that receives after handling through radio-frequency transmitter that radio-frequency (RF) tag is returned is further processed, and is uniting when using and to communicate with external host with external host; Described radio frequency sending set comprises: crystal oscillator, frequency synthesizer, power splitter, ASK modulator, power amplifier and emitting antenna, its annexation is: the reference frequency input port of the output of crystal oscillator and frequency synthesizer joins, for frequency synthesizer provides reference frequency; The radio-frequency (RF) output end of frequency synthesizer connects the single-ended input port of power splitter; One of two output port of power splitter connect the local oscillator input port of radio-frequency transmitter, and another connects the carrier wave input port of ASK modulator; Another input port of ASK modulator is the modulation signal input port, connects the digital signal that the digital baseband processing module is sent here, and the output terminal of ASK modulator is received the input port of power amplifier (PA); The output port of power amplifier is received emitting antenna; Described radio frequency sending set comprises: receiving antenna, coherent demodulator, operational amplifier and comparer, its annexation is: the signal input part and the receiving antenna of coherent demodulator join, an output terminal of the power splitter of the described radio frequency sending set of local oscillator input termination of coherent demodulator, the output terminal of coherent demodulator is received the input end of operational amplifier; The input end of the output termination comparer of operational amplifier, the described digital baseband processing module of the output termination of comparer; External interface and hummer and light emitting diode that described digital baseband processing module comprises two conversion chips of a single-chip microcomputer, is made up of RS232 serial ports and USB port, its annexation is: single-chip microcomputer and two conversion chips, hummer and light emitting diodes join, and two conversion chips connect RS232 serial ports and USB port respectively; Described single-chip microcomputer provides the control signal of total system, and this control signal comprises initializing signal, enable signal, the frequency hopping command signal of radio frequency transceiver medium frequency synthesizer, the digital input signals of the enable signal of coherent demodulator and ASK modulator; The answer signal of label delivers to after radio-frequency transmitter receive to be handled that single-chip microcomputer is decoded, verification, is judged by single-chip microcomputer then, provides corresponding information.
2, read write line as claimed in claim 1 is characterized in that, described coherent demodulator adopts integrated chip LT5516, and described operational amplifier and comparer adopt integrated chip LT6207.
3, read write line as claimed in claim 1 is characterized in that, described radio-frequency (RF) receiving and transmission module and coupled digital baseband processing module are arranged on the circuit board, and described antenna adopts the printed antenna on the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100985253A CN100428264C (en) | 2007-04-20 | 2007-04-20 | Portable radio frequency recognizing read-write machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100985253A CN100428264C (en) | 2007-04-20 | 2007-04-20 | Portable radio frequency recognizing read-write machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101042728A CN101042728A (en) | 2007-09-26 |
| CN100428264C true CN100428264C (en) | 2008-10-22 |
Family
ID=38808229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100985253A Expired - Fee Related CN100428264C (en) | 2007-04-20 | 2007-04-20 | Portable radio frequency recognizing read-write machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100428264C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626252B (en) * | 2009-08-11 | 2013-01-09 | 武汉凡谷电子技术股份有限公司 | AISG tower mounted amplifier OOK MODEM circuit |
| CN101662289B (en) * | 2009-09-11 | 2013-09-25 | 西安电子科技大学 | Passive ultrahigh-frequency radio-frequency identification chip decoder and decoding method |
| CN101944173A (en) * | 2010-09-21 | 2011-01-12 | 时晓明 | Radio frequency identification system adopting signal transceiver division type card reading device for roll calling and card reading |
| CN102622620A (en) * | 2012-01-10 | 2012-08-01 | 上海交通大学 | Wireless identification read-write device |
| CN102609657A (en) * | 2012-02-11 | 2012-07-25 | 林福泉 | Login method and device for user identified by radio frequency |
| CN103106382A (en) * | 2013-01-31 | 2013-05-15 | 广州梦龙科技有限公司 | Peripheral intelligent reader with radio frequency identification (RFID) recognition function |
| CN104881694A (en) * | 2015-05-30 | 2015-09-02 | 宁波慧豪信息产业有限公司 | Data read-write method, terminal and system based on RFID double protocols |
| CN105809222A (en) * | 2016-03-30 | 2016-07-27 | 上海复亚电子科技有限公司 | Ultrahigh frequency radio frequency identification reader-writer transmitter framework based on power amplifier switching mechanism |
| CN107358136A (en) * | 2017-06-05 | 2017-11-17 | 广西荣中科技有限责任公司 | A kind of RFID reader |
| CN108154059A (en) * | 2017-11-17 | 2018-06-12 | 北京计算机技术及应用研究所 | A kind of portable radio-frequency identification terminal |
| CN107818281A (en) * | 2017-11-20 | 2018-03-20 | 深圳市鸿陆技术有限公司 | A kind of handhold RFID read write line and its control method |
| CN108256599A (en) * | 2018-01-04 | 2018-07-06 | 南京信息工程大学 | A kind of home furnishings intelligent searcher |
| CN111987994B (en) * | 2019-05-23 | 2023-12-01 | 中国工程物理研究院电子工程研究所 | High-performance miniaturized monolithic integrated harmonic mixer |
| CN112968656B (en) * | 2021-02-01 | 2023-03-24 | 珠海格力电器股份有限公司 | Control device and method of motor controller and motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2454823Y (en) * | 2000-10-26 | 2001-10-17 | 深圳市世纪潮智能科技有限公司 | Long distance radiofrequency recognization device |
| US20060120495A1 (en) * | 2004-11-12 | 2006-06-08 | Thomas Barber | Timing system and method for a wireless transceiver system |
| CN2800292Y (en) * | 2003-12-22 | 2006-07-26 | 李剑 | Terminal client for BeiDou navigation positioning system |
-
2007
- 2007-04-20 CN CNB2007100985253A patent/CN100428264C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2454823Y (en) * | 2000-10-26 | 2001-10-17 | 深圳市世纪潮智能科技有限公司 | Long distance radiofrequency recognization device |
| CN2800292Y (en) * | 2003-12-22 | 2006-07-26 | 李剑 | Terminal client for BeiDou navigation positioning system |
| US20060120495A1 (en) * | 2004-11-12 | 2006-06-08 | Thomas Barber | Timing system and method for a wireless transceiver system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101042728A (en) | 2007-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100428264C (en) | Portable radio frequency recognizing read-write machine | |
| CN101320419A (en) | Ultrahigh frequency RFID label reader-writer | |
| CN100587710C (en) | Ultrahigh frequency miniature RFID reader/writer module | |
| US8115632B1 (en) | RFID tag capable of modifying internal operations for a sensed environment | |
| WO2009127158A1 (en) | Signal enhancer chip for radio frequency identification system and signal enhancer | |
| CN203217596U (en) | Passive all-frequency RFID reader/writer | |
| CN101714206A (en) | Rfid tag communication system and rfid tag communication apparatus | |
| CN201716739U (en) | Small ultra-high frequency integral RFID reader | |
| CN109815759A (en) | A kind of telecommunication group network system and network-building method based on ultrahigh frequency RFID | |
| CN102142100A (en) | High-frequency passive RFID (Radio Frequency Identification) analog front end circuit | |
| CN103971145A (en) | Handheld type Internet of Things terminal | |
| CN201429849Y (en) | Radio frequency identification reader-writer | |
| CN201111095Y (en) | UHF radio frequency recognizing read-write machine | |
| CN101388082B (en) | Super high frequency electronic label recognizer | |
| CN102622645B (en) | Radio frequency front end of radio frequency identification (RFID) electronic tag | |
| CN201903894U (en) | Ultra-high frequency RFID reading and writing device module | |
| CN102256018B (en) | Mobile phone with integrated RFID (Radio Frequency Identification) function and communication method thereof | |
| CN205540822U (en) | RFID read -write system is handed to hyperfrequency | |
| CN208156678U (en) | A kind of hyperfrequency module for reading and writing based on R2000 chip | |
| CN203838734U (en) | Hand-held type internet of things terminal | |
| CN201993781U (en) | Ultrahigh frequency radio frequency identification reader-writer module | |
| CN201212999Y (en) | Ultra-high frequency RFID label reader/writer | |
| CN101079097B (en) | Small-sized modular type UHF radio frequency identification read-write equipment | |
| CN204406445U (en) | A kind of 125K low frequency activation device | |
| CN202110567U (en) | Ultrahigh-frequency RFID (Radio Frequency Identification) reader-writer and corresponding mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20170420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |