CN104001976B - The manufacture method of double-interface card, card base groove milling method and apparatus - Google Patents
The manufacture method of double-interface card, card base groove milling method and apparatus Download PDFInfo
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- CN104001976B CN104001976B CN201410253672.3A CN201410253672A CN104001976B CN 104001976 B CN104001976 B CN 104001976B CN 201410253672 A CN201410253672 A CN 201410253672A CN 104001976 B CN104001976 B CN 104001976B
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- 238000003801 milling Methods 0.000 title claims abstract description 183
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 230000006698 induction Effects 0.000 claims description 16
- 230000005672 electromagnetic field Effects 0.000 claims description 13
- 230000001052 transient effect Effects 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 11
- 238000005538 encapsulation Methods 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 238000002594 fluoroscopy Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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Abstract
The invention discloses the card base groove milling equipment of a kind of manufacture method of double-interface card, the card base groove milling method of double-interface card and double-interface card.Wherein, the card base groove milling method, comprises the following steps：S1, to the card base of double-interface card, detection card lubber ring determines depth of milled groove to the distance of card base front surface；S2, groove milling operation is performed according to the depth of milled groove.It is too deep present invention, avoiding groove milling and the end of a thread mill off or groove milling is not deep enough and do not find out the end of a thread using such scheme, there is very high market application value.
Description
Technical field
The present invention relates to the manufacture of double-interface card, more particularly to, a kind of manufacture method of double-interface card, double-interface card
Card base groove milling method and double-interface card card base groove milling equipment.
Background technology
Double-interface card is based on single-chip, integrates contact and the smart card of non-contact interface, and it has two
Mode of operation：Chip contact and radio frequency induction formula.The Ka Jinei of double-interface card is provided with antenna and chip, and antenna is sandwiched in card base
Interior, chip is embedded in card primary surface and contact is exposed outside, and the both ends of antenna are connected with chip welding spot, and Card Reader is received by antenna
The electromagnetic wave of device transmitting realizes non-contact Card Reader, is realized by chip contacts with card reader contact and contacts Card Reader.
Double-interface card production process includes groove milling, take-up, welding and encapsulation, and inlaying chip position in card base carries out groove milling, will
Antenna the end of a thread, which exposes, to be come, and is pressed from both sides by take-up and is chosen the end of a thread, is connected with chip welding spot, then be packaged.
The weight of a groove milling can be related to when groove milling.On old-fashioned double interface groove milling take-up machines, all it is
By manually setting a depth of milled groove, but this is irrational, because the depth of card base card lubber ring when line lamination is planted
It is influenced by many factors, so its coil depth is unfixed.
So groove milling to be present too deep and the end of a thread mill off and groove milling is not deep enough and choose not for old-fashioned double interface groove milling take-up machines
The first-class destabilizing factor of outlet.
Therefore, the prior art is defective, it is necessary to improve.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of manufacture method of new double-interface card, the card of double-interface card
The card base groove milling equipment of base groove milling method and double-interface card.
Technical scheme is as follows：A kind of card base groove milling method of double-interface card, it comprises the following steps：S1 is right
The card base of double-interface card, detection card lubber ring determine depth of milled groove to the distance of card base front surface；S2 is deep according to the groove milling
Degree performs groove milling operation.
Preferably, in the card base groove milling method, in step S1, the distance is detected by having an X-rayed.
Preferably, in the card base groove milling method, in step S1, milling card base simultaneously detects the distance.
Preferably, in the card base groove milling method, before step S1, following steps S0 is performed：The card base is placed in friendship
In Electromagnetic Field；Step S1 comprises the following steps：S101, using the milling tool card base of high speed rotation；S102, the milling cutter
When blade touches card lubber ring, the blade periodically touches two rear line heads of the card lubber ring simultaneously, produces wink
When electric current；S103, the transient current produce periodic card lubber ring electromagnetic field, and alternation induced electricity is produced at induction coil
Stream；S104, when detecting the alternation induced-current, control the milling cutter to stop milling card base, calculate the distance, determine milling
Groove depth.
Preferably, in the card base groove milling method, step S1 comprises the following steps：S111, using the milling cutter of high speed rotation
Milling card base；S112, when positive pole blade and the negative pole blade of the milling cutter are respectively contacted two rear line head of card lubber ring, conducting
Sensor circuit, output termination signal；S113, when receiving the termination signal, control the milling cutter to stop, calculating it is described away from
From determining depth of milled groove.
Preferably, in the card base groove milling method, before step S1, preliminary milling depth is determined by having an X-rayed；Step S1
In, according to the preliminary milling depth, direct milling card base to the preliminary milling depth, then proceed to milling card base and detect
The distance.
The another technical scheme of the present invention is as follows：A kind of manufacture method of double-interface card, including groove milling, take-up, welding with
Encapsulation step, in the groove milling step, including any above-mentioned card base groove milling method.
Another technical scheme of the present invention is as follows：A kind of card base groove milling equipment of double-interface card, it includes what is be linked in sequence
Detection means, computing device and slotting attachment；The detection means is used to detect the card base of double-interface card, obtains card base
Coil is transferred to the computing device to the distance of card base front surface；The computing device is used to calculate milling according to the distance
Groove depth；The slotting attachment is used to perform groove milling operation according to the depth of milled groove.
Preferably, in the card base groove milling equipment, the detection means sets fluoroscopy units, and it is by having an X-rayed described in detection
Distance.
Preferably, in the card base groove milling equipment, the detection means also sets up induction coil and its current inductor, with
And the AC coil of external AC power supply；The slotting attachment sets milling cutter and its rotary unit and control unit；The rotation
Unit is used to rotate the milling cutter at a high speed；The AC coil is used to produce alternating electromagnetic field；The milling cutter is used for milling card base,
When its blade touches card lubber ring to be detected, the blade periodically touches the both ends of the card lubber ring simultaneously
The end of a thread, produce transient current；The induction coil is used to produce periodic card lubber ring electromagnetic field according to the transient current,
And produce alternation induced-current；Described control unit is used to, according to the alternation induced-current, control the milling cutter to stop milling
Card base, the detection means is notified, the distance is calculated by it.
Using such scheme, the card lubber ring of present invention detection double-interface card determines groove milling to the distance of card base front surface
Groove milling operation is performed further according to the depth of milled groove after depth, it is too deep and the end of a thread mill off or groove milling is not deep enough to avoid groove milling
And do not find out the end of a thread, there is very high market application value.
Brief description of the drawings
Fig. 1 is the double-interface card structural representation of one embodiment of the present of invention；
Fig. 2 is the perspective detects schematic diagram of one embodiment of the inventive method；
Fig. 3 is the electromagnetic induction detects schematic diagram of one embodiment of the inventive method；
Fig. 4 is Fig. 3 G-G enlarged schematic partial views；
Fig. 5 is the contact induction detects schematic diagram of one embodiment of the present of invention；
Fig. 6 is Fig. 5 J-J enlarged schematic partial views；
Fig. 7 is Fig. 5 contact induction circuit diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
One embodiment of the present of invention is that a kind of card base groove milling method of double-interface card, it comprises the following steps.
S1, to the card base of double-interface card, detection card lubber ring determines depth of milled groove to the distance of card base front surface；Such as
Using perspective detection, electromagnetic induction detection and/or milling cutter both positive and negative polarity contact detecting method, detection card lubber ring to card base front surface
Distance.As shown in figure 1, double-interface card includes card base 2, some circle card lubber rings 3 are provided with, the both ends of card lubber ring 3 connect
Chip 25 is connect, antenna is sandwiched in Ka Jinei, and chip is embedded in card primary surface and contact is exposed outside, the both ends of antenna and chip welding spot
Connection, the electromagnetic wave that card reader transmitting is received by antenna are realized non-contact Card Reader, connect by chip contacts and card reader contact
Touch and realize contact Card Reader.Preferably, determine that depth of milled groove is not more than the distance；For example, card lubber ring is detected to the positive table of card base
The distance in face is 0.3 millimeter, it is determined that depth of milled groove is 0.28 millimeter or 0.3 millimeter；And for example, detect card lubber ring to card base just
The distance on surface is 0.38 millimeter, it is determined that depth of milled groove is 0.32 millimeter, 0.34 millimeter or 0.36 millimeter；Preferably, it is described
Depth of milled groove is than described apart from small 0.1 to 0.2 millimeter.The card base front surface, it is that double-interface card operates relative to follow-up groove milling
In step, the one side of the blade of milling cutter is used towards groove milling operation.
S2, groove milling operation is performed according to the depth of milled groove.For example, depth of milled groove is 0.28 to 0.55 millimeter；For example, milling
Groove depth be 0.3,0.35,0.4 or 0.5 millimeter, directly inlay the groove milling of chip position in card base, avoid groove milling it is too deep and the end of a thread
Mill off or groove milling not enough do not find out the end of a thread deeply, quickly can expose to come antenna the end of a thread, then perform follow-up step,
Such as pressed from both sides by take-up and choose the end of a thread, it is connected with chip welding spot, then be packaged.
Preferably, in step S1, the distance is detected by having an X-rayed.As shown in Fig. 2 perspective camera lens 4 launches perspective ray,
The front of double-interface card is irradiated, perspective ray at least partly penetrates card base 2, because Ka Ji and the material of card lubber ring 3 are different, worn
Permeability is also different, so can see the line between shallow dark phase on screen 1 is received, khaki coil 3 is measured by data processor
To the distance 5 in card face, i.e. S, so that it is determined that depth of milled groove.Preferably, using arrangement for perspective, perspective is penetrated by its photoscope hair
Ray；Preferably, the arrangement for perspective sets the reception screen 1.
Preferably, in step S1, milling card base simultaneously detects the distance.For example, one side milling card base, while described in detection
Distance.And for example, milling card base, the distance is then detected.And for example, first high-speed milling card base milling card base at a slow speed again.Preferably,
In step S1, in milling card base, the distance is detected in real time and determines the depth of milled groove.
Preferably, before step S1, following steps S0 is performed：The card base is placed in alternating electromagnetic field, now, card base
Interior card lubber ring is changed by this alternating electromagnetism field action, wherein magnetic flux, so as to produce electromotive force；Need what is illustrated
It is, it will be appreciated by those skilled in the art that each related embodiment of the present invention does not limit the specific implementation sum of the alternating electromagnetic field
Value, it need to can only produce related detectable electromotive force, available for next step.
For example, using electromagnetic induction detection method, step S1 comprises the following steps：S101, using the milling cutter of high speed rotation
Milling card base；Each related embodiment of the present invention does not limit the rotary speed of the milling cutter, it will be appreciated by those skilled in the art that only needing
It can reach milling card base and non-destructively influence the operation of subsequent step；Step S101 can be combined in step S2
The common application of groove milling operation, as groove milling operation a part or referred to as preamble operates.S102, the blade of the milling cutter connect
When contacting card lubber ring, the blade periodically touches two rear line heads of the card lubber ring simultaneously, produces transient current；
Preferably, the milling cutter has circular arc, Y-shaped, U-shaped or V-shaped blade, i.e., with two arms；Card lubber ring
Two rear line heads separate, and for a rear line head, it first contacts an arm of blade, then contacts another arm, with this loop cycle,
So as to produce transient current in the card lubber ring, the cycle is determined by the rotating speed of milling cutter, and the present invention is not limited additionally this.
S103, the transient current produce periodic card lubber ring electromagnetic field, and alternation induced-current is produced at induction coil；Sensing
Coil and the neighbouring setting of card lubber ring, for producing detectable alternation induced-current.S104, detect the alternation induced electricity
During stream, control the milling cutter to stop milling card base, calculate the distance, determine depth of milled groove.For example, detected by indicating circuit
During to the alternation induced-current, control system controls the milling cutter to stop milling card base, calculates the distance, determines groove milling depth
Degree, then performs next step.
For example, as shown in Figure 3 and Figure 4, to the connection of AC coil 6 24V alternating current, the card lubber ring 3 in card base 2 is in
In the magnetic field of one change, the magnetic flux in card lubber ring is also ceaselessly changing, and at this moment Ka Jinei card lubber ring both ends will
Produce an electromotive force.Milling cutter 11 is in climb milling card base, when simultaneously the blade of milling cutter touches two rear line heads of card lubber ring
12 and 13, card lubber ring will form a closed-loop path, produce a transient current, and this electric current produces a magnetic field, and milling
Knife is to rotate at a high speed, so this magnetic field is to whether there is alternately to change.At this moment induction coil 9 is also at the magnetic field of a change
In, the magnetic flux through induction coil 9 is also alternately change, and an alternating current, electric current will be produced inside induction coil 9
Inductor will sense this electric current, and climb milling card base will be stopped by outwards transmitting a termination signal milling cutter, pass through data
Depth of milled groove is calculated in processor.Preferably, indicating circuit 10 is also set up in induction coil 9, for example, it includes a LED
Indicator lamp, for indicating the alternating current.
And for example, comprised the following steps using milling cutter both positive and negative polarity contact detecting method, step S1：S111, rotated using high speed
Milling tool card base；The milling cutter has two blades, and insulation set between described two blades, a blade is as positive pole
Blade, another blade are as negative pole blade.Preferably, the milling cutter has circular arc, Y-shaped, U-shaped or V-shaped knife
Sword, i.e., with two arms, each arm or its end are as the blade；Also, insulation set between two arm.
S112, when positive pole blade and the negative pole blade of the milling cutter are respectively contacted two rear line head of card lubber ring, sensor circuit is turned on,
Output termination signal；S113, when receiving the termination signal, control the milling cutter to stop, calculating the distance, determine groove milling
Depth.
For example, the contact detection of milling cutter both positive and negative polarity, as shown in Fig. 5, Fig. 6 and Fig. 7, milling cutter used is special, including mutual
Positive pole blade 18, the negative pole blade 20 of insulation.Each blade is embedded on insulation handle of a knife 16, between having necessarily between both positive and negative polarity blade
Gap, it is connected mainly by the first brush 17, the second brush 19 with external circuit 21.Milling cutter rotates at a high speed climb milling card base 2, when two
When individual blade is respectively contacted first the end of a thread 23 of card lubber ring 3, second the end of a thread 24, external circuit is connected, and sensor 22 works,
A termination signal is exported, milling cutter stops climb milling, depth of milled groove is calculated by data processor.
Preferably, with the various embodiments described above connected applications, in the card base groove milling method, before step S1, by saturating
Depending on determining preliminary milling depth；In step S1, according to the preliminary milling depth, direct milling card base is deep to the preliminary milling
Degree, then proceedes to milling card base and detects the distance.So, it can quickly realize and substantially position, then direct high-speed milling
To the preliminary milling depth, then slow down and continue milling card base and detect the distance, improve production efficiency.
A kind of manufacture method of double-interface card, including groove milling, take-up, welding and encapsulation step, in the groove milling step, bag
Card base groove milling method described in any of the above-described embodiment is included, then performs follow-up take-up, welding and encapsulation step.
A kind of card base groove milling equipment of double-interface card, including detection means, computing device and the slotting attachment being linked in sequence；
The detection means is used to detect the card base of double-interface card, obtains card lubber ring to the distance of card base front surface, transmission
To the computing device；The computing device is used to calculate depth of milled groove according to the distance；The slotting attachment is used for basis
The depth of milled groove performs groove milling operation.Preferably, the slotting attachment sets milling cutter and its rotary unit and control unit；Institute
State control unit and connect the rotary unit, for controlling the rotary unit to rotate the milling cutter at a high speed.
Preferably, the card base groove milling equipment also includes frame, the detection means, the computing device and the groove milling
Device is individually fixed in the frame.Preferably, the frame sets roller group and its fixed part, and roller group is used to move institute
Frame is stated, fixed part is used for the limitation roller group when it is enabled and rolled.Preferably, each roller is set respectively in the roller group
A quick release valve is put, for releasing the air inside its corresponding roller.
Preferably, in the card base groove milling equipment, the frame sets card fixing device；For example, card fixing device
A fixed part and a movable part including rectangular shaped, by the combination of fixed part and movable part, are limited pending
The position of double-interface card.Preferably, the card fixing device is a groove.Pending double-interface card is arranged at the groove
In.Preferably, the shape of the groove is similar to the shape of the double-interface card, and the length and width of the groove are respectively than institute
Length and the width for stating double-interface card are more 0.6 to 1.3 millimeter.
Preferably, in the card base groove milling equipment, the frame also sets up card mount, and it carries stacked double-interface card.
Preferably, the card mount sets the first transmission belt and control module, and the bottom of the groove sets magnetic part, sensing unit,
The frame also sets up the second transmission belt, and the groove only sets two parallel raised lines；Do not have described in sensing units sense on groove
There is double-interface card, send an electric signal to the control module, control module control card horse, which is opened, exports and push a pair of
Interface snaps into the first transmission belt, and the double-interface card is transferred to the centre of two parallel raised lines by the first transmission belt, by milling cutter according to institute
State depth of milled groove and perform groove milling operation, the groove is then conveyed out by the second transmission belt, continue cycling through the lower a pair of of processing
Interface card.Preferably, the frame also sets up take-up folder, for when antenna the end of a thread exposes next, being pressed from both sides by take-up and choosing the end of a thread
Go out.
Preferably, in the card base groove milling equipment, the detection means sets fluoroscopy units, and it is by having an X-rayed described in detection
Distance.For example, fluoroscopy units include a perspective camera lens and its drive device, display device, drive device is used to drive photoscope
Hair penetrates perspective ray, and display device is used for the pivoting results for showing perspective ray.
Preferably, in the card base groove milling equipment, the detection means also sets up induction coil and its current inductor, with
And the AC coil of external AC power supply；The slotting attachment sets milling cutter and its rotary unit and control unit；The rotation
Unit is used to rotate the milling cutter at a high speed；The AC coil is used to produce alternating electromagnetic field；The milling cutter is used for milling card base,
When its blade touches card lubber ring to be detected, the blade periodically touches the both ends of the card lubber ring simultaneously
The end of a thread, produce transient current；The induction coil is used to produce periodic card lubber ring electromagnetic field according to the transient current,
And produce alternation induced-current；Described control unit is used to, according to the alternation induced-current, control the milling cutter to stop milling
Card base, the detection means is notified, the distance is calculated by it.
Preferably, in the card base groove milling equipment, the milling cutter mutually insulated sets positive pole blade and negative pole blade；It is described
Milling cutter is used for milling card base, when its positive pole blade and negative pole blade are respectively contacted two rear line head of card lubber ring, conducting sense
Answer circuit, output termination signal；Described control unit is used to, according to the termination signal, control the milling cutter to stop milling card
Base, the detection means is notified, the distance is calculated by it.
Any of the above-described embodiment of connected applications, another embodiment of the present invention are as follows：A kind of manufacturing equipment of double-interface card,
It includes any card base groove milling equipment as described above, and card base groove milling equipment is linked in sequence take-up equipment, welding equipment and sealed in unit,
So as to realize pipelining, groove milling step, and follow-up take-up, welding and encapsulation step are integrally realized.
For example, card base groove milling method described in various embodiments of the present invention, should as double-interface card lubber ring depth detection method
With on the automatic take-up machine of double interface groove millings, before two stations of groove milling and take-up.Its effect be the groove milling of card base it
Before measure card lubber ring to the positive distance of card base, determine a depth of milled groove, avoid when groove milling milling to card lubber ring,
Take-up is caused to fail.
Further, embodiments of the invention also include, and each technical characteristic of the various embodiments described above, are mutually combined what is formed
The card base groove milling equipment of the manufacture method of double-interface card, the card base groove milling method of double-interface card and double-interface card.So, Ke Yiyou
The solution groove milling of effect is too deep and the end of a thread mill off and groove milling is not deep enough and the problems such as do not find out the end of a thread, greatly improve double interface millings
Groove take-up machine or the stability of double interface groove milling take-up production procedures.
It should be noted that above-mentioned each technical characteristic continues to be mutually combined, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the scope of description of the invention record；Also, for those of ordinary skills, it can add according to the above description
To improve or convert, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (3)
1. a kind of card base groove milling method of double-interface card, it is characterised in that comprise the following steps：
S0, the card base is placed in alternating electromagnetic field；
S1, to the card base of double-interface card, detection card lubber ring determines depth of milled groove to the distance of card base front surface；Step S1 it
Before, determine preliminary milling depth by having an X-rayed；Also, in step S1, according to the preliminary milling depth, direct milling card base arrives
The preliminary milling depth, then proceed to milling card base and detect the distance；
Step S1 is further comprising the steps of：
S101, using the milling tool card base of high speed rotation；
S102, when the blade of the milling cutter touches card lubber ring, the blade periodically touches the inner wire simultaneously
Two rear line heads of circle, produce transient current；
S103, the transient current produce periodic card lubber ring electromagnetic field, and alternation induced-current is produced at induction coil；
S104, when detecting the alternation induced-current, control the milling cutter to stop milling card base, calculate the distance, it is determined that
Depth of milled groove；
S2, groove milling operation is performed according to the depth of milled groove.
2. a kind of manufacture method of double-interface card, including groove milling, take-up, welding and encapsulation step, it is characterised in that the groove milling
In step, including card base groove milling method as claimed in claim 1.
A kind of 3. card base groove milling equipment of double-interface card, it is characterised in that including be linked in sequence detection means, computing device with
Slotting attachment；
The detection means is used to detect the card base of double-interface card, the distance of acquisition card lubber ring to card base front surface,
It is transferred to the computing device；
The computing device is used to calculate depth of milled groove according to the distance；
The slotting attachment is used to perform groove milling operation according to the depth of milled groove；
The detection means sets fluoroscopy units, and it detects the distance by having an X-rayed；
The detection means also sets up induction coil and its current inductor, and the AC coil of external AC power supply；
The slotting attachment sets milling cutter and its rotary unit and control unit；
The rotary unit is used to rotate the milling cutter at a high speed；
The AC coil is used to produce alternating electromagnetic field；
The milling cutter is used for milling card base, and when its blade touches card lubber ring to be detected, the blade is periodically same
When touch two rear line heads of the Inside coil, produce transient current；
The induction coil is used to produce periodic card lubber ring electromagnetic field according to the transient current, and produces alternation sensing
Electric current；
Described control unit is used to, according to the alternation induced-current, control the milling cutter to stop milling card base, notify the inspection
Device is surveyed, the distance is calculated by it.
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| CN201410253672.3A CN104001976B (en) | 2014-06-10 | 2014-06-10 | The manufacture method of double-interface card, card base groove milling method and apparatus |
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| CN201410253672.3A CN104001976B (en) | 2014-06-10 | 2014-06-10 | The manufacture method of double-interface card, card base groove milling method and apparatus |
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| KR100846546B1 (en) * | 2006-12-29 | 2008-07-15 | 임인호 | IC terminal connection method of a combi card and its connection device |
| KR20120019729A (en) * | 2010-08-26 | 2012-03-07 | (주)바이오스마트 | Ic card constructed by using spot welding and method the same |
| CN102737273B (en) * | 2012-06-25 | 2014-12-03 | 广州市明森机电设备有限公司 | Groove milling and wire pickup method for dual-interface card, and automatic wire pickup equipment |
| CN103164739A (en) * | 2013-03-05 | 2013-06-19 | 江苏远洋数据股份有限公司 | Double-interface card production process |
| CN103474749A (en) * | 2013-09-30 | 2013-12-25 | 盛华金卡智能科技（深圳）有限公司 | Dual-interface card and manufacturing technique thereof |
| CN103776361B (en) * | 2014-01-15 | 2017-01-04 | 中钞信用卡产业发展有限公司 | The depth detection apparatus of a kind of double-interface card internal antenna and detection method |
| CN103791808B (en) * | 2014-02-26 | 2017-02-15 | 广州明森科技股份有限公司 | Depth detecting device and method for antenna in double-interface card |
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2014
- 2014-06-10 CN CN201410253672.3A patent/CN104001976B/en not_active Expired - Fee Related
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