CN101599133B - Wireless radio frequency identification tag and running method thereof - Google Patents
Wireless radio frequency identification tag and running method thereof Download PDFInfo
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Abstract
The invention discloses a wireless radio frequency identification tag and a running method thereof, which can greatly save costs and placing spaces needed by additionally arranging a wireless radio frequency identification interfering emitter and solve the problem that the wireless radio frequency identification interfering emitter has destructive interference. The wireless radio frequency identification tag comprises a receiving module, a judging module and an interference generating module, wherein the judging module comprises a first judging unit and a second judging unit. When the interference function of the radio frequency identification tag is started, the first judging unit judges whether a signal received by the receiving module comprises a reading instruction or not. If the signal received by the receiving module comprises the reading instruction, the second judging unit judges whether an identifying code of the read instruction is right or not. If the signal received by the receiving module does not comprise the reading instruction or the identifying code of the read instruction is not right, the judging module controls the interference generating module to generate a wireless radio frequency interference signal.
Description
Technical field
The present invention relates to a kind of radio frequency identification, and especially, the invention relates to a kind of wireless radio frequency identification mark and How It Works thereof that produces radio frequency identification interference signal function that have.
Background technology
In general wireless system, the existence of victim emitter (jammer) will be upset the normal operation of this wireless system.But under some special occasions, victim emitter but has the value of its practicality.For example, the victim emitter that is applied to the Mobile Communications system will be launched one and disturb signal, makes near all Mobile Communications systems that are positioned at it all can't normal operation.By this, this victim emitter can reach the effect that prevents the mobile phone noise, so applicable to the extremely quiet place of needs.
Common radio frequency identification victim emitter is a special victim emitter at present; it is in default band limits; continue scanning and produce to disturb signal, make that all the RFID labels (tag) in its radio-frequency (RF) signal scope all can't be read, with protection RFID label.Even yet under this situation legal proper RFID reader (reader) also can't be normally and the RFID label link up, the destructive interference that this kind caused by the radio frequency identification victim emitter is also often brought the inconvenience in the practicality.
Therefore, main category of the present invention is to provide a kind of wireless radio frequency identification mark and How It Works thereof that produces radio frequency identification interference signal function that have, to address the above problem.
Summary of the invention
Technical matters to be solved by this invention provides a kind of wireless radio frequency identification mark, a kind of method that operates wireless radio frequency identification mark also is provided in addition, they can significantly save required cost and the placement space of extra increase radio frequency identification victim emitter, and have overcome the destructive interference problem that the radio frequency identification victim emitter is had.
In order to solve above technical matters, the invention provides following technical scheme.
A specific embodiment according to the present invention is a kind of wireless radio frequency identification mark.This wireless radio frequency identification mark has the function that produces radio frequency identification interference signal.This wireless radio frequency identification mark comprises a radio frequency identification respond module, a judge module, disturbs a generation module and an antenna.Wherein this radio frequency identification respond module comprises a transmission/receiver module, a control module and an internal memory.This judge module comprises one first judging unit and one second judging unit.
After this transmission/receiver module received a signal, this signal will be transferred into this judge module through after this control module decipher.When an interference function of this wireless radio frequency identification mark is activated, this first judging unit will judge whether this signal comprises a reading command.If the judged result of this first judging unit is for being that this second judging unit will judge whether an identifying code of this reading command is correct.If the judged result of this first judging unit or this second judging unit is not, this judge module is controlled this interference generation module and is produced less radio-frequency interference signal.
Another specific embodiment according to the present invention is a kind of method of running one wireless radio frequency identification mark, comprises the following step: (a) receive a signal; (b) interference function when this frequency identification tag is activated, and judges whether this signal comprises a reading command; (c) if the judged result of step (b) is for being to judge whether an identifying code of this reading command is correct; And (d) if the judged result of step (b) or step (c) for not, produces a less radio-frequency and disturbs signal.
Another specific embodiment according to the present invention is for also being a kind of wireless radio frequency identification mark.This wireless radio frequency identification mark comprises an antenna, a radio frequency identification respond module, is disturbed a generation module and a judge module.This judge module is coupled to this antenna, this radio frequency identification respond module and this interference generation module.This judge module determines whether controlling this interference generation module according to the signal that this antenna received and produces less radio-frequency interference signal.
After being activated according to the interference function of wireless radio frequency identification mark of the present invention, this wireless radio frequency identification mark can produce a radio frequency identification and disturb signal, is read by unwarranted reader to prevent all wireless radio frequency identification marks in this interference signal institute covering scope.By this, the security that is stored in the information in these wireless radio frequency identification marks can obtain full guarantee.Compared to prior art, can significantly save required cost and the placement space of extra increase radio frequency identification victim emitter according to wireless radio frequency identification mark of the present invention and How It Works thereof, and when interference function is not activated, this wireless radio frequency identification mark just is as good as with general wireless radio frequency identification mark, therefore wireless radio frequency identification mark of the present invention system produces passively and disturbs signal, does not have the problem of the destructive interference that known radio frequency identification victim emitter had.
Can be about the advantages and spirit of the present invention by following detailed Description Of The Invention and appended graphic being further understood.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the functional block diagram of the wireless radio frequency identification mark of first specific embodiment of the present invention.
Fig. 2 is the process flow diagram of the wireless radio frequency identification mark How It Works of second specific embodiment of the present invention.
Fig. 3 A and 3B are the functional block diagram of the wireless radio frequency identification mark of the 3rd specific embodiment of the present invention.
[primary clustering symbol description]
S10 ~ S22: process step
1,3: wireless radio frequency identification mark 12: transmission/receiver module
14,38: judge module 16,39: internal memory
18,36: disturb generation module 13,33: control module
20,32: antenna 346,362: modulation unit
142,382: the first judging units 144,384: the second judging units
342: demodulation unit 344: interpretation unit
10,34: the radio frequency identification respond module
Embodiment
First specific embodiment according to the present invention is a wireless radio frequency identification mark.This wireless radio frequency identification mark has the function that produces radio frequency identification interference signal, and this radio frequency identification disturbs signal to produce noise on a certain frequency band, to disturb the data transmission on this frequency band.Please refer to Fig. 1, Fig. 1 is the functional block diagram of wireless radio frequency identification mark of the present invention.As shown in Figure 1, wireless radio frequency identification mark 1 comprises radio frequency identification respond module 10, judge module 14, disturbs generation module 18 and antenna 20.Radio frequency identification respond module 10 comprises transmission/receiver module 12, control module 13 and internal memory 16.Judge module 14 comprises first judging unit 142 and second judging unit 144.Transmission/receiver module 12 is coupled to antenna 20.
The function of transmission/receiver module 12 is to transmit and receive a signal.In fact, the signal that received of transmission/receiver module 1 can be the radio-frequency (RF) signal of being launched by a wireless radio frequency identification mark reading device (RFID reader).After transmission/receiver module 12 received this signal, this signal will be transferred into control module 13.But this signal of control module 13 deciphers is to produce an instruction signal.
Because after in case the interference function of wireless radio frequency identification mark 1 is activated, all wireless radio frequency identification mark reading devices can't read wireless radio frequency identification mark 1 and other contiguous wireless radio frequency identification mark, therefore, if the wireless radio frequency identification mark reading device desires to close the interference function of wireless radio frequency identification mark 1, the wireless radio frequency identification mark reading device must send a reading command so that the wireless radio frequency identification mark 1 that the script interference function has been activated can temporarily allow reading of wireless radio frequency identification mark reading device.This reading command can be comprised in the signal (or this instruction signal).
For example, this reading command of being sent of wireless radio frequency identification mark reading device can be following form:
CMD＝{JAMMER，auth_code}。
In above-mentioned reading command, the parameter JAMMER that lists in the front is a temporary transient instruction of removing interference, the parameter auth_code of back then is an identifying code, have only when this is temporary transient and remove that the instruction of disturbing (being parameter JAMMER) is set effectively and this identifying code (being parameter auth_code) is judged as when correct, what wireless radio frequency identification mark 1 just can temporary transient permission wireless radio frequency identification mark reading device reads.It should be noted that this reading command can't influence the controlling value of disturbing the startup variable, just makes wireless radio frequency identification mark 1 can temporarily allow reading of wireless radio frequency identification mark reading device.
From the above mentioned, if setting, control module 13 disturb the controlling value that starts variable that the interference function of wireless radio frequency identification mark 1 is closed, then wireless radio frequency identification mark 1 just is as good as with general wireless radio frequency identification mark, when receiving this signal (instruction signal), can produce response signal according to this signal (instruction signal).Disturb the controlling value that starts variable that the interference function of wireless radio frequency identification mark 1 is activated if control module 13 is set, then first judging unit 142 of judge module 14 will judge whether this signal comprises reading command.
The judged result of first judging unit 142 has following two kinds of situations.If on behalf of this signal, the judged result of first judging unit 142 do not comprise this reading command for not, therefore, judge module 14 will be controlled and disturb generation module 18 generations one less radio-frequency to disturb signal.Because the function of wireless radio frequency identification mark 1 is as the radio frequency identification interference unit, so the wireless radio frequency identification mark reading device can't read wireless radio frequency identification mark 1 and other contiguous wireless radio frequency identification mark at this moment.If the judged result of first judging unit 142 is for being, that is this signal comprises this reading command, and second judging unit 144 will judge whether the identifying code that this reading command comprises is correct.
The judged result of second judging unit 144 has following two kinds of situations.If the judged result of second judging unit 144 is not, represent the identifying code of this reading command also incorrect, therefore, judge module 14 will be controlled and disturb generation module 18 to produce less radio-frequency interference signal.If the judged result of second judging unit 144 is for being, that is the identifying code of this reading command is correct, judge module 14 meeting controls this moment are disturbed generation module 18 temporarily stop to send radio frequency identification and are disturbed signal, make the wireless radio frequency identification mark reading device can read wireless radio frequency identification mark 1.
From the above, if the judged result of first judging unit 142 or second judging unit 144 is not, judge module 14 will be controlled and disturb generation module 18 generation less radio-frequencies to disturb signal to make the wireless radio frequency identification mark reading device can't read wireless radio frequency identification mark 1.
As shown in Figure 1, transmission/receiver module 12 is coupled to and disturbs generation module 18, disturbs signal to wireless radio frequency identification mark 1 particular range on every side in order to transmit this less radio-frequency that disturbs generation module 18 to be produced.In actual applications, the size of this particular range may be several centimeters, also may be several meters, and end relies the kind of wireless radio frequency identification mark 1 and decides.By this, all are positioned at this less radio-frequency and disturb the wireless radio frequency identification mark of signal institute covering scope all can be subjected to the protection that this less radio-frequency disturbs signal, in order to avoid read by the reading device of unauthenticated.
Second specific embodiment according to the present invention is a kind of wireless radio frequency identification mark How It Works.This method has makes wireless radio frequency identification mark produce the function that radio frequency identification is disturbed signal.Please refer to figure two, figure two is the process flow diagram that illustrates this wireless radio frequency identification mark How It Works.
As shown in Figure 2, this method at first receives a signal (step S10).In fact, this signal can be the radio-frequency (RF) signal of being launched by a wireless radio frequency identification mark reading device.Whether an interference function of then judging this frequency identification tag is activated (step S12).
The judged result of step S12 has following two kinds of possible cases.If the judged result of step S12 is not for, that is this interference function is not activated, and then allows radio frequency identification reading device to read this wireless radio frequency identification mark (step S20).If the judged result of step S12 is for being, that is this interference function is activated, judges then whether this signal comprises a reading command (step S14).
The judged result of step S14 also has following two kinds of possible cases.If the judged result of step S14 is not for, that is this signal do not comprise this reading command, then produces less radio-frequency and disturbs signal (step S18).If the judged result of step S14 is for being, that is this signal comprises this reading command, and correctly whether an identifying code of then judging this reading command (step S16).
The judged result of step S16 also has following two kinds of possible cases.If the judged result of step S16 is not, that is the identifying code of this reading command and incorrect, then produces less radio-frequency and disturb signal (step S18).If the judged result of step S16 is for being, that is the identifying code of this reading command is correct, then allows radio frequency identification reading device to read this wireless radio frequency identification mark (step S20).
In actual applications, after this method produced this less radio-frequency interference signal (step S18), this method can transmit this less radio-frequency and disturb the particular ambient (step S22) of signal to this wireless radio frequency identification mark.By this, all wireless radio frequency identification marks in this less radio-frequency disturbs this scope that signal contains all can be subjected to the protection that this less radio-frequency disturbs signal, are read by the reading device of unauthenticated avoiding.
The 3rd specific embodiment according to the present invention is a wireless radio frequency identification mark.This wireless radio frequency identification mark has the function that produces radio frequency identification interference signal.Please refer to Fig. 3 A, Fig. 3 A is the functional block diagram of wireless radio frequency identification mark of the present invention.Wireless radio frequency identification mark 3 comprises antenna 32, radio frequency identification respond module 34, disturbs generation module 36 and judge module 38.Radio frequency identification respond module 34 comprises demodulation unit 342, interpretation unit 344, modulation unit 346, control module 33 and internal memory 39.Judge module 38 comprises first judging unit 382 and second judging unit 384.Demodulation unit 342 and modulation unit 346 all are coupled to antenna 32.Judge module 38 is coupled to control module 33 and disturbs generation module 36.
The function of antenna 32 is to receive and transmit signal, and this signal may come from the wireless radio frequency identification mark reading device.Demodulation unit 342 is coupled to antenna 32, and its function is that the program of this signal being separated modulation separates the modulation signal to produce one.Interpretation unit 344 is coupled to demodulation unit 342, and this that is used for demodulation unit 342 is produced separated the modulation signal and carried out the program of decipher to produce an instruction signal and this instruction signal is sent to control module 33.
Some controlling values that start variable of disturbing are set to closing state, then the function of wireless radio frequency identification mark 3 is identical with general wireless radio frequency identification mark, when it receives signal via antenna 32, can produce response signal according to the requirement of this signal (instruction signal), this wireless radio frequency identification mark reading device can read wireless radio frequency identification mark 3; If yet disturb the controlling value that starts variable to be set to the state of unlatching, the interference function of expression wireless radio frequency identification mark 3 is activated, then wireless radio frequency identification mark 3 can produce less radio-frequency according to this signal (instruction signal) and disturb signal or response signal, and its detailed action specification is as follows.
After the interference function of wireless radio frequency identification mark 3 was activated, when receiving this signal (instruction signal), first judging unit 382 of judge module 38 will judge whether this signal (instruction signal) comprises a reading command.The judged result of first judging unit 382 has following two kinds of situations.If the judged result of first judging unit 382 is for denying, represent this signal (instruction signal) not comprise this reading command, therefore, judge module 38 will be controlled and disturb generation module 36 to make it produce less radio-frequency interference signal, that is, disturb generation module 36 to produce a less radio-frequency and disturb signal, make the wireless radio frequency identification mark reading device can't read wireless radio frequency identification mark 3 and other contiguous wireless radio frequency identification mark in response to this signal (instruction signal).Whether if on behalf of this signal (instruction signal), the judged result of first judging unit 382 for being, comprise this reading command, it is correct to follow the identifying code that second judging unit 384 will judge that this reading command comprises.
The judged result of second judging unit 384 has following two kinds of situations.If the judged result of second judging unit 384 is not, represent the identifying code of this reading command also incorrect, therefore, judge module 38 will be controlled and disturb generation module 36 to make it produce less radio-frequency interference signal; At this moment, disturb generation module 36 to produce less radio-frequency and disturb signal in response to this signal, after this less radio-frequency disturbs signal to be sent to wireless radio frequency identification mark 3 particular range on every side via antenna 32, with other wireless radio frequency identification mark that makes that the wireless radio frequency identification mark reading device can't read wireless radio frequency identification mark 3 and be positioned at this particular range.
If the judged result of second judging unit 384 is for being, that is the identifying code of this reading command is correct, this moment, judge module 38 can not start, and this radio frequency identification respond module 34 will produce response signal in response to this signal (instruction signal), and this wireless radio frequency identification mark reading device can read wireless radio frequency identification mark 3.At this moment, the function that had of wireless radio frequency identification mark 3 promptly is as good as with general wireless radio frequency identification mark.It should be noted that above-mentioned reading command can't influence the controlling value that this interference starts variable.
As shown in Figure 3A, the modulation unit 346 of radio frequency identification respond module 34 is coupled to antenna 32, control module 33 and disturbs generation module 36.In this example, disturb generation module 36 and radio frequency identification respond module 34 to share modulation unit 346.That is to say that this less radio-frequency that disturbs generation module 36 to be produced disturbs this response signal that signal or control module 33 produced all can be via behind modulation unit 346 modulations, see through antenna 32 again it is sent out.
In actual applications, another kind of possible case then is except the modulation unit 346 that radio frequency identification respond module 34 comprises, and disturbs generation module 36 also to comprise modulation unit 362.Shown in Fig. 3 B, after this less radio-frequency that disturbs generation module 36 to be produced disturbs signal system to carry out the program of modulation by modulation unit 362, see through antenna 32 again it is sent out.After this response signal that is produced as for radio frequency identification respond module 34 then still carries out the program of modulation by modulation unit 346, see through antenna 32 again it is sent out.
In addition, wireless radio frequency identification mark 3 also can further comprise an electric adjustment module (not illustrating), and the function of this power adjustment module is to provide electrical power to each module of wireless radio frequency identification mark 3 or assembly so that it can normal operation.As for this power supply is that external power source or internal electric source are then decided on the kind of wireless radio frequency identification mark 3 actually.If wireless radio frequency identification mark 3 is an active wireless radio frequency identification label, then wireless radio frequency identification mark 3 itself also comprises power supply.If wireless radio frequency identification mark 3 is a passive type wireless radio frequency identification mark, then wireless radio frequency identification mark 3 itself does not comprise power supply, but by conversion from this signal that radio frequency identification reading device received to obtain electric power.
As mentioned above, can produce a radio frequency identification according to wireless radio frequency identification mark of the present invention disturbs signal to be read by unwarranted reader to prevent all wireless radio frequency identification marks in this interference signal institute covering scope.By this, the information that is stored in these wireless radio frequency identification marks can obtain to adequately protect.Compared to prior art, wireless radio frequency identification mark of the present invention system produces passively and disturbs signal, does not have the problem of the destructive interference that known radio frequency identification victim emitter had.And whether wireless radio frequency identification mark of the present invention can be detected and have illegal radio frequency identification reading device to attempt reading itself or wireless radio frequency identification mark on every side; if detect the signal that this illegally reads, just send and disturb signal to protect wireless radio frequency identification mark own or on every side.
By the above detailed description of preferred embodiments, be that hope can be known description feature of the present invention and spirit more, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention desire application.Therefore, the category of the claim that the present invention applied for should be done the broadest explanation according to above-mentioned explanation, contains the arrangement of all possible change and tool equality to cause it.
Claims (12)
1. wireless radio frequency identification mark is characterized in that it comprises:
One receiver module is in order to receive a signal;
One judge module comprises:
One first judging unit is coupled to this receiver module, disturbs signal when this wireless radio frequency identification mark sends a radio frequency identification, and whether the signal that this receiver module of this first judgment unit judges receives comprises a reading command; And
One second judging unit is coupled to this first judging unit, if the judged result of this first judging unit is for being whether an identifying code of this this reading command of second judgment unit judges is correct; And
One disturbs generation module, be coupled to this judge module, if the judged result of this first judging unit and this second judging unit is for being, this judge module is controlled this interference generation module and is temporarily stopped to send this less radio-frequency interference signal and be performed up to this reading command and finish.
2. wireless radio frequency identification mark as claimed in claim 1 is characterized in that, the signal that described receiver module receives is to be received from a wireless radio frequency identification mark reading device.
3. wireless radio frequency identification mark as claimed in claim 2 is characterized in that, if the judged result of this second judging unit is for being that this judge module allows this wireless radio frequency identification mark reading device to read this wireless radio frequency identification mark.
4. wireless radio frequency identification mark as claimed in claim 1 is characterized in that it further comprises:
One delivery module is coupled to this interference generation module, disturbs signal to this wireless radio frequency identification mark particular range on every side in order to transmit this less radio-frequency.
5. method that operates wireless radio frequency identification mark comprises the following step:
(a) receive a signal;
(b) disturb signal when this wireless radio frequency identification mark sends a radio frequency identification, judge whether the signal of this reception comprises a reading command;
(c) if the judged result of step (b) is for being to judge whether an identifying code of this reading command is correct; And
(d) if the judged result of step (b) and step (c) is for being temporarily to stop to send this less radio-frequency interference signal and be read to allow this wireless radio frequency identification mark.
6. running wireless radio frequency identification mark method as claimed in claim 5 is characterized in that, the signal of described reception is to be received from a wireless radio frequency identification mark reading device.
7. running wireless radio frequency identification mark method as claimed in claim 6 is characterized in that it further comprises the following step:
If the judged result of step (c) is for being to allow this wireless radio frequency identification mark reading device to read this wireless radio frequency identification mark.
8. wireless radio frequency identification mark is characterized in that it comprises:
One antenna is in order to receive a signal;
One radio frequency identification respond module is coupled to this antenna;
One disturbs generation module, is coupled to this antenna; And
One judge module, be coupled to this antenna, this radio frequency identification respond module and this interference generation module, described judge module also comprises one first judging unit, when sending a radio frequency identification, this wireless radio frequency identification mark disturbs signal, whether this signal that this first judgment unit judges receives comprises a reading command, if the judged result of this first judging unit is for being, whether one identifying code of this this reading command of second judgment unit judges is correct, if the result of second judgment unit judges is for being that this wireless radio frequency identification mark allows to be read.
9. wireless radio frequency identification mark as claimed in claim 8, it is characterized in that, stop to send this less radio-frequency interference signal if described judge module is controlled this interference generation module, then this radio frequency identification respond module produces a response signal in response to the signal of this reception.
10. wireless radio frequency identification mark as claimed in claim 8 is characterized in that, if the judged result of described first judging unit or this second judging unit is not, this judge module is controlled this interference generation module and produced this less radio-frequency interference signal.
11. wireless radio frequency identification mark as claimed in claim 8 is characterized in that, described radio frequency identification respond module comprises:
One modulation unit is coupled to this antenna and this interference generation module, sees through this antenna after this less radio-frequency disturbs signal via this modulation unit modulation and transmits.
12. wireless radio frequency identification mark as claimed in claim 8 is characterized in that, described interference generation module comprises:
One modulation unit is coupled to this antenna, sees through this antenna after this less radio-frequency disturbs signal via this modulation unit modulation and transmits.
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| CN 200810110480 CN101599133B (en) | 2008-06-05 | 2008-06-05 | Wireless radio frequency identification tag and running method thereof |
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| CN 200810110480 CN101599133B (en) | 2008-06-05 | 2008-06-05 | Wireless radio frequency identification tag and running method thereof |
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| CN101599133B true CN101599133B (en) | 2011-07-20 |
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| CN105069500B (en) * | 2015-07-06 | 2018-05-15 | 东莞电子科技大学电子信息工程研究院 | A kind of high security RFID label antenna, RFID tag and radio frequency method |
| CN106919875A (en) * | 2015-12-24 | 2017-07-04 | 北京奇虎科技有限公司 | A kind of method and apparatus of data protection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1886750A (en) * | 2003-11-27 | 2006-12-27 | 皇家飞利浦电子股份有限公司 | Jammer for tags and smart cards |
| CN1930577A (en) * | 2004-03-24 | 2007-03-14 | 艾利丹尼森公司 | System and method for selectively reading RFID devices |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1886750A (en) * | 2003-11-27 | 2006-12-27 | 皇家飞利浦电子股份有限公司 | Jammer for tags and smart cards |
| CN1930577A (en) * | 2004-03-24 | 2007-03-14 | 艾利丹尼森公司 | System and method for selectively reading RFID devices |
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Effective date of registration: 20201023 Address after: No. 1, Xingzhu Road, Hsinchu Science Park, Taiwan, China Patentee after: MEDIATEK Inc. Address before: 4 building 518057, block C, Institute of international technology innovation, South tech ten road, Shenzhen hi tech Zone, Guangdong Patentee before: Mstar Semiconductor,Inc. Patentee before: MEDIATEK Inc. Effective date of registration: 20201023 Address after: 4th Floor, Block C, International Institute of Technology Innovation, Nanshi Road, Shenzhen High-tech Zone, Guangdong Province Patentee after: Mstar Semiconductor,Inc. Patentee after: MEDIATEK Inc. Address before: 4 building 518057, block C, Institute of international technology innovation, South tech ten road, Shenzhen hi tech Zone, Guangdong Patentee before: Mstar Semiconductor,Inc. Patentee before: MSTAR SEMICONDUCTOR Inc. |