JP5397488B2 - Watches - Google Patents

Description

  The present invention relates to a wristwatch.

Magnetic cards have become widespread as telephone cards, various credit cards, point cards issued by each retail store, highway highway cards, and other various uses. However, the danger of being easily counterfeited became a social problem. For this reason, IC cards are becoming popular for the purpose of preventing forgery, retaining personal confidential information, and increasing storage capacity.

However, even with an IC card, it is necessary to contact the reader / writer to exchange data, so the IC card can be transferred to the other party or the reader / writer at the time of transaction, that is, when reading / writing the IC card data. Because it was necessary to pass, it was not safe for counterfeiting or confidentiality.

On the other hand, the non-contact IC card that has recently appeared can exchange data without contact with a reader / writer, so that the simplicity and safety of the read / write operation has been improved. Therefore, there is still a risk of loss, and there is a complicated aspect that it is necessary to take it out from a pocket or the like every time it is used.

For this reason, recently, products in which the above contactless IC card function is incorporated in a wristwatch that is always carried by a user have been put into practical use. This watch has a structure built in a non-contact IC card, that is, a non-contact data communication unit including an antenna and a transmission / reception means for performing non-contact data communication with the outside through the antenna is incorporated in the case body of the watch. It is a thing.

FIG. 14 shows the structure of the wristwatch 10 configured as described above. The wristwatch 10 is provided with a one-piece type case body 1 that is integrally formed of a synthetic resin and includes a case portion 1A corresponding to the trunk of a wristwatch with a back cover and a bottom portion 1B corresponding to the back cover. Bottom 1 of body 1
On the inner surface of B, a loop-shaped antenna 11 configured on a flexible wiring board is arranged. This flexible wiring board has a communication module 10 incorporating a transmission / reception circuit and the like.
IC is mounted. In the wristwatch 10, the display window 2 is attached to the case body 1, and a movement 4 that is a time information display processing unit for displaying time information is disposed in the case body 1, and the front surface of the movement 4. A dial 7 is attached to the side, and a second hand 61, a minute hand 62 and an hour hand 63 are attached to the movement 4 via the dial 7. A winding stem (operation shaft) 5 is connected to the movement 4, and a crown (external operation member) 6 disposed outside the case body 1 is connected to the tip of the winding stem 5.

However, in the wristwatch incorporating the above conventional non-contact IC card function, since the antenna is arranged inside the case body, the case body must be made of an insulating material. Since conductive materials such as metal materials that are frequently used cannot be used, there are significant restrictions on the appearance design, and in particular, there is a problem that it is not possible to wipe off an inexpensive image lacking in a high-class feeling. .

In addition, even when an insulating material is used for the case body, when a conductive member is attached to the inside or outside of the case body, an eddy current (into the conductive member due to a radio wave emitted from the outside or a radio wave emitted from the watch itself) Loop current) may occur, and the energy loss due to the eddy current causes deterioration of communication characteristics (for example, reduction of communication distance). For this reason, there has been a problem that an annular conductive member such as a rotating bezel and a decorative edge attached to the outside of the case body or a dial plate and an inner frame attached to the inside of the case body cannot be used. .

Furthermore, in a wearable electronic device such as the above-mentioned wristwatch, there is no risk of loss or intricacies such as taking in and out like a non-contact IC card, but it is brought into contact with or sufficiently close to the receiving position of the external transmitting / receiving device. It is necessary to extend the communication distance as compared with the non-contact IC card, but if the size is easy to carry and attach as a wearable electronic device, the plane size becomes smaller than that of the non-contact IC card. Therefore, there is a dilemma that the communication distance decreases.

Therefore, the present invention solves the above problems, and the problem is a wearable electronic device having a non-contact data communication function, and even if a conductive member is used for the case body and other parts, the communication function can be achieved. The object is to provide a structure capable of suppressing the decrease.

In order to solve the above problems, a wearable electronic device having a non-contact data communication function of the present invention,
A non-contact communication unit including an antenna and a transmission / reception means for performing non-contact data communication, a case body that accommodates the non-contact communication unit, and disposed inside the case body or configured as a part of the case body A magnetic member made of soft magnetic material, and the magnetic member focuses the magnetic field fluctuation component of the electromagnetic wave used for the non-contact data communication in the vicinity of the antenna inside the case body. It is configured.

According to the present invention, the magnetic component composed of the soft magnetic material causes the magnetic field fluctuation component accompanying the electromagnetic wave used for non-contact data communication to be focused in the vicinity of the antenna inside the case body. It is possible to reduce the influence on the communication due to the presence of the conductive material, and it is possible to suppress the decrease in the communication sensitivity and the communication distance due to the presence of the conductive material. Therefore, at least a part of the case body can be made of a conductive material, or other conductive members can be used, the degree of freedom in appearance design can be increased, and a sense of quality can be produced. In addition, the degree of freedom in overall device design can be expanded by expanding the range of selection of internal structural component materials. Furthermore, since it is possible to enhance the communication function without increasing the size of the device, the communication distance can be increased and the device can be easily used while ensuring the portability of the device.

Here, the wearable electronic device includes a wristwatch, a diving computer, a wristwatch-type stopwatch, a wristwatch-type communication device (for example, a device without a timekeeping function), a pocket watch, and the like.

In addition, a wearable electronic device having another contactless data communication function according to the present invention includes a contactless communication unit including an antenna and a transmission / reception means for performing contactless data communication, and a case for housing the contactless communication unit And a magnetic member made of a soft magnetic material having a higher magnetic permeability than the case body is disposed between the antenna and the case body.

According to the present invention, a magnetic member made of a soft magnetic material having a higher magnetic permeability than the case body is disposed between the antenna and the case body, thereby accompanying electromagnetic waves during non-contact data communication. Since the variable magnetic field component passes through the inside of the magnetic member more easily than the case body, it is possible to reduce the influence of the case body on the communication state, and by appropriately setting the shape and position of the magnetic member, Communication sensitivity and communication output can be increased, and a communication distance can be secured.

In the present invention, it is preferable that at least a part of the case body is made of a conductive material. According to the present invention, when at least a part of the case body is made of a conductive material, an eddy current is generated in the case body due to an electromagnetic field variation during non-contact data communication, and communication sensitivity and communication are accordingly increased. Although the distance is reduced, in the case of the present invention, a magnetic member having a higher magnetic permeability than the case body is disposed between the antenna and the case body, thereby reducing the variable magnetic field passing through the case body. Therefore, since the eddy current loss is also reduced accordingly, it is possible to suppress a decrease in communication sensitivity and communication distance due to the configuration of the conductive material. In this case,
It is desirable that at least the peripheral part (front side part) of the display part in the case body is made of metal.
By being made of metal, it is possible to give a sense of rigidity and luxury.

In the present invention, it is preferable that an insulating member is disposed between the magnetic member and the case body. According to this invention, since the insulating member is disposed between the magnetic member and the case body, it is possible to further reduce the influence of the portion made of the conductive material of the case body. In addition, by using an insulating member as a cushioning material, it is possible to improve the impact resistance of the equipment because it is possible to reduce the possibility that each part will be damaged by an impact caused by dropping, such as preventing damage to the magnetic member in particular. become. In order for the insulating member to function as a buffer material, it is desirable to use an elastic material such as soft synthetic resin or rubber.

In this invention, it is preferable that the said magnetic member is comprised so that it may extend along the extending direction of the said antenna. According to this invention, since the magnetic member is configured to extend in the extending direction of the antenna, the fluctuation magnetic field component of the electromagnetic wave can be concentrated near the antenna while suppressing the increase in size of the device. The influence by the part comprised with the electroconductive raw material among case bodies can further be reduced.

In this invention, it is preferable that the said magnetic member is comprised by the substantially cyclic | annular form so that the said antenna may be surrounded. According to the present invention, since the magnetic member is configured in a substantially annular shape so as to surround the antenna, the communication sensitivity and communication output of the antenna can be ensured even if the surrounding case body is formed of a conductive material. Can do. In particular, when the antenna has a loop-shaped conductive wire (when it is a so-called loop antenna or a coil-shaped antenna).
Since the magnetic member is formed in an annular shape along the loop shape of the conductive wire, the degree of correlation between the magnetic field fluctuation of the electromagnetic wave in the surrounding space and the potential difference (induced electromotive force) generated in the conductive wire can be increased. The communication sensitivity and the communication distance can be improved efficiently.

Next, a wearable electronic device having another contactless data communication function according to the present invention includes a contactless communication unit including an antenna and a transmission / reception means for performing contactless data communication, and the contactless communication unit. And a display unit configured to be able to propagate electromagnetic waves used for the non-contact data communication inside the case body, and the antenna includes a conductive wire configured in a loop shape, A wire loop axis is installed so as to pass through the display unit, and a magnetic member made of a soft magnetic material having a magnetic permeability higher than that of the case body is disposed adjacent to at least a part of the periphery of the conductive line. It is characterized by being.

According to the present invention, an electromagnetic wave can be propagated in and out of the case body via the display unit, and an antenna having a loop-shaped conductive wire is installed so that the loop axis passes through the display unit. Thus, by arranging a magnetic member made of a soft magnetic material having a magnetic permeability higher than that of the case body in at least a part around the conductive wire, the variable magnetic field component accompanying the electromagnetic wave can be focused in the vicinity of the antenna. Therefore, the influence by the case body and other members of the device can be reduced, and the communication sensitivity and the communication distance can be improved.

Here, the antenna including a loop-shaped conductive wire is not limited to a so-called loop antenna but also includes an antenna having a coil-shaped conductive wire. The loop axis refers to an axis (virtual line) of the loop shape (coil shape) of the conductive wire.

In the present invention, it is preferable that at least a part of the case body is made of a conductive material. According to this invention, even if at least a part of the case body is made of a conductive material, the magnetic field variation component is concentrated in the vicinity of the antenna by the magnetic member as described above. Loss due to the generated eddy current can be reduced, and a decrease in communication sensitivity and communication distance can be suppressed.

In the present invention, the magnetic member is preferably disposed in a range of at least 180 degrees around the conductive wire. According to this invention, the magnetic member is at least 18 around the conductive wire.
By being arranged in the range of 0 degrees, the magnetic field fluctuation component accompanying the electromagnetic wave at the time of non-contact data communication can be greatly concentrated around the conductive wire, so that the conductive material exists in a wider range. The influence on the communication state can be reduced, and the communication sensitivity and communication distance can be further improved. In this case, as a magnetic member, the cross-sectional shape when cut along a plane orthogonal to the extending direction of the conductive wire exceeds 180 degrees around the conductive wire, such as a U shape, a U shape, or a V shape. It is desirable that they are integrally configured in the range. As a result, it is possible to reduce the number of parts and downsize the device.

In the present invention, the magnetic member has a shape opened on the display portion side (for example, an opening having a cross-sectional shape such as the U-shape, U-shape, or V-shape is provided on the display portion side. Is preferred). According to the present invention, since the magnetic member is disposed in the direction excluding the display portion side of the antenna, the directivity of the antenna radiation characteristic and the antenna reception characteristic to the display portion side can be improved, and the antenna display It is possible to reduce the influence of the case body that exists in the peripheral position other than the part more effectively, and since there is no magnetic member on the display part side of the antenna, it is possible to reduce the thickness of the internal structure Thus, it becomes possible to reduce the thickness of the device.

In the present invention, an insulating member is preferably disposed between the magnetic member and the surrounding members. According to the present invention, the insulating member is disposed between the magnetic member and the surrounding members (components included in the internal structure other than the case body and the antenna), so that the conductive member is formed of the surrounding conductive material. It is possible to further reduce the influence of the existing portion. In addition, by using an insulating member as a cushioning material, it is possible to improve the impact resistance of the equipment because it is possible to reduce the possibility that each part will be damaged by an impact caused by dropping, such as preventing damage to the magnetic member in particular. become. In order for the insulating member to function as a buffer material, it is desirable to use an elastic material such as soft synthetic resin or rubber.

In this invention, it is preferable that the said magnetic member is comprised so that it may extend along the extension direction of the said conductive wire. According to the present invention, since the magnetic member is configured to extend in the extending direction of the antenna, it is possible to reduce the influence of the portion made of the surrounding conductive material while suppressing the increase in size of the device. Can do.

In this invention, it is preferable that the said magnetic member is comprised by the substantially cyclic | annular form along the loop shape of the said conductive wire. According to the present invention, since the magnetic member is configured in a substantially annular shape so as to surround the antenna along the loop shape of the conductive wire, even if the surrounding case body is formed of the conductive material, the influence is exerted. This can be sufficiently reduced, and the communication sensitivity and communication output of the antenna can be ensured.

In the present invention, it is preferable that an information display processing unit for displaying information on the display unit is provided, and the magnetic member positions the information display processing unit in the case body. According to the present invention, an information display processing unit (a movement for controlling and driving a pointer in the case of an analog timepiece, a control for controlling and driving a display body such as a liquid crystal panel in the case of a digital timepiece by a magnetic member.・ Equivalent to the drive circuit.) Is positioned in the case body, so there is no need for other positioning structures and positioning parts (inner frame, etc.), the increase in the number of parts can be suppressed, and the structure can be simplified. Cost reduction and device downsizing can be achieved.

In the present invention, it is preferable that an information display processing unit for displaying information on the display unit is provided, and the antenna is configured in a substantially annular shape so as to surround the information display processing unit in the case body. The loop antenna has a large loop diameter, and the communication sensitivity and communication output are affected by the opening area surrounded by the loop. Therefore, it is preferable to increase the loop diameter or the opening area as much as possible in order to improve the communication sensitivity and the communication distance. According to the present invention, since the antenna is configured to surround the information display processing unit, it is possible to increase the loop diameter and the opening area while suppressing the increase in size of the device, and to improve the communication sensitivity and the communication distance. It becomes possible to improve.

In the present invention, the case body includes a back cover part disposed on the opposite side of the display part, and a case part to which the display part and the back cover part are attached, and the back cover part is made of an insulating material. It is preferable to be configured. Since the back cover is made of an insulating material, electromagnetic waves are not shielded by both the front display and the back cover through which the loop axis of the antenna passes, thereby further improving communication sensitivity and communication distance. Can do.

In the present invention, the case body includes a back cover part disposed on the opposite side of the display part, and a case part to which the display part and the back cover part are attached, and the back cover part is the magnetic member. It is preferable to constitute at least a part of According to this invention, since the back cover part constitutes a part of the magnetic member, the volume of the magnetic member arranged inside the case part can be reduced accordingly, so that the device can be downsized. Can do.

Next, a contactless data communication system according to the present invention includes a wearable electronic device having any one of the contactless data communication functions described above, and an external transmission / reception device that performs contactless data communication with the contactless communication unit. It is characterized by having.

According to the present invention, even when a case body or other parts (particularly an annular conductive member) at least part of which is made of a conductive material such as a metal in a wearable electronic device is used, contact with an external transmitting / receiving device is prevented. Data communication can be performed without any problem. In addition, since the communication range can be expanded, an easy-to-use system can be configured.

Note that the wearable electronic device preferably includes display means for displaying a communication state, communication content, communication result, and the like of non-contact data communication. The display means is preferably configured to be able to display time information display, call state display, and the like.

As described above, according to the present invention, the influence on the non-contact data communication function can be reduced even when a conductive material such as a metal is used for a structural part such as a case body, and the appearance design and texture of the wearable electronic device. As well as a feeling of use during non-contact data communication.

It is a schematic explanatory drawing which shows the usage condition of 1st Embodiment of the communication system provided with the electronic device provided with the non-contact data communication function based on this invention. It is a block diagram which shows schematic structure of the external transmission / reception apparatus in a communication system. It is a block diagram which shows schematic structure of the non-contact data communication part of the wristwatch of 1st Embodiment. It is explanatory drawing which shows typically schematic structure of the time information display process part of 1st Embodiment. It is a schematic longitudinal cross-sectional view which shows typically the main body structure of 1st Embodiment. It is a schematic perspective view which shows typically the internal structure of 1st Embodiment. It is a schematic longitudinal cross-sectional view which shows typically the main body structure of the electronic device of 2nd Embodiment which concerns on this invention. It is a schematic longitudinal cross-sectional view which shows typically the main body structure of the electronic device of 3rd Embodiment which concerns on this invention. It is a schematic longitudinal cross-sectional view which shows typically the main body structure of the electronic device of 4th Embodiment which concerns on this invention. It is a schematic longitudinal cross-sectional view which shows typically the main body structure of the electronic device of 5th Embodiment concerning this invention. It is a sequence diagram which shows the communication procedure of a communication system. It is a schematic perspective view which shows the antenna structure in 1st Embodiment. It is a schematic perspective view which shows the antenna structure in 3rd Embodiment. It is a schematic longitudinal cross-sectional view which shows typically the structure of the timepiece provided with the conventional non-contact data communication function.

Next, an embodiment of a wearable electronic device having a non-contact data communication function according to the present invention will be described in detail with reference to the accompanying drawings. Each embodiment described below shows a wristwatch as a specific configuration of a wearable electronic device having a non-contact data communication function. However, the present invention is not limited to wristwatches, but includes various wearable electronic devices such as diving computers, arm-mounted stopwatches, and arm-mounted devices that do not have a timekeeping function. It can be applied to any device as long as it can be worn on the body, such as a watch.

[First Embodiment]
FIG. 1 is a perspective view showing an overall configuration of a non-contact data communication system targeting the wristwatch type electronic device 100 of the present embodiment. This non-contact data communication system includes a wristwatch type electronic device 1
00 and an external transmission / reception device 510 capable of performing contactless data communication with the wristwatch type electronic device 100. In the illustrated example, the external transmission / reception device 510 is incorporated in a gate device 500 installed at a gate position (such as a ticket gate) that should pass when boarding a train or a lift.

The contactless data communication between the wristwatch type electronic device 100 and the external transmission / reception device 510 generally uses a carrier wave (carrier signal) of 13.56 [MHz] or 125 [kHz], and the transmission output of both devices. Is weak wireless communication performed with a low limit. Accordingly, a range of a distance of about several centimeters from the external transmission / reception device 510 is a communicable range. Must be close to the antenna.

(Configuration of external transceiver)
FIG. 2 is a block diagram showing a configuration of the external transmission / reception device 510 incorporated in the gate device 500. In this external transmission / reception device 510, the control device 511 is connected to the external transmission / reception device 51.
Control all zeros. The transmission circuit 512 generates and outputs a transmission control signal under the control of the control device 511. The reception circuit 513 receives the reception signal of the antenna 515 via the high frequency circuit 514, demodulates the reception data from this reception signal, and outputs it to the control device 511. The high-frequency circuit 514 generates a transmission signal based on the transmission control signal and transmits the transmission signal to the wristwatch-type electronic device 100 via the antenna 515 and receives a reception signal from the wristwatch-type electronic device 100 received by the antenna 511. Output to the circuit 513.

2 shows a wristwatch type electronic device 200 according to a second embodiment to be described later together with the wristwatch type electronic device 100. The wristwatch type electronic device 200 will be described later.

(Configuration of non-contact communication unit)
FIG. 3 shows a contactless communication unit 110 having a contactless data communication function of the wristwatch-type electronic device 100.
It is a block diagram which shows the structure of these. In the non-contact communication unit 110 of the wristwatch-type electronic device 10, the antenna 111 and the transmission / reception means 110RF that performs communication via the antenna 111 are used.
And have. The antenna 111 is configured in a loop shape having a loop shaft 111s oriented in a predetermined direction. The non-contact communication unit 110 can be configured using a non-contact IC card standard such as ISO 14443, for example.

The transmission / reception means 110RF includes a tuning capacitor 1 connected to both ends of the antenna 111.
12 and a part (transmission / reception circuit portion) of a communication module 110IC composed of an integrated circuit (IC) or the like.

The communication module 110IC is connected to the rectifier circuit 113 connected to the antenna 111, the reception circuit 114 connected to the antenna 111, which demodulates the reception signal received by the antenna 111 and outputs reception data, and the antenna 111. A transmission circuit 115 that modulates transmission data to generate a transmission signal and sends it to the antenna 111; a reference signal generation circuit 116 that generates a predetermined reference signal based on a clock signal output from an oscillation circuit or the like; and a reference signal Generation circuit 11
6 receives the reference signal sent from the receiver 6 and extracts the received data content from the data string of the received data, and receives the received data content from the conversion processing circuit 117 that receives the transmitted data content and forms the transmitted data. In addition, a central control circuit 118 that outputs transmission data contents to the conversion processing circuit 117, an encryption processing circuit 119 that encrypts transmission data and decrypts received data under the control of the central control circuit 118, and an ID number and data contents And a memory 110M composed of a non-volatile memory or the like.

Here, the rectifier circuit 113 is configured to extract electric power from a carrier wave (carrier signal) received by the antenna 111 and send the electric power to each circuit through a power supply line. In addition, you may comprise so that electric power may be supplied from power supplies, such as a battery incorporated in the apparatus, instead of the electric power supply form which supplies the electric power produced | generated from such a received signal. The memory 110M is preferably a rewritable memory such as an EEPROM or a flash memory. Also,
A removable medium such as a memory card may be provided instead of, or in addition to, the memory fixed in the wristwatch type electronic device. Also, the cryptographic processing circuit 11
9 is DES (Data Encryption Standard), RSA (RL Riverst, A. Shamir, LA
delman) and other cryptographic processing functions.

(Configuration of time information display processing function part)
FIG. 4 is a schematic block diagram illustrating a structure (time information display processing display unit) for realizing the main body function of the wristwatch-type electronic device 100. The wristwatch type electronic device 100 may have only the non-contact data communication function as described above, but in the case of this embodiment, the wristwatch type electronic device 100 also has a time information display function inherent to the wristwatch type electronic device. . The configuration that realizes this function includes the watch C
The PU 14 and the pointer driving unit 18 are included.

The watch CPU 14 controls the entire clock function (time information display function). For example, the display mode and the internal state according to the operation control of the time information display means such as hands, the operation by the external operation means such as winding stem described later, and the like. Control time, etc.

The pointer driving unit 18 includes a driving circuit 18A and a driving mechanism 18B. Drive mechanism 18B
The stepping motor 310, the drive coil 311 that generates magnetic force by the drive pulse supplied from the drive circuit 18A, the stator 312 excited by the drive coil 311, and the magnetic field excited inside the stator 312 are rotated. And a rotor 313. In the stator 312, the magnetic saturation portion 3 is formed such that different magnetic poles are generated in the facing portions 315 and 316 around the rotor 313 due to the magnetic force generated in the drive coil 311.
17 is provided. Further, in order to regulate the rotation direction of the rotor 313, the stator 31.
An inner notch 318 is provided at an appropriate position on the inner circumference of the two. In this configuration, when the stator 312 is excited by the drive coil 311, cogging torque is generated in the rotor 313, and the rotor 313 stops at an appropriate position. Rotor 313 of stepping motor 310
Are rotated by a wheel train 350 having a fifth wheel 351, a fourth wheel 352, a third wheel 353, a second wheel 354, a minute wheel 355, and a hour wheel 356 engaged with the rotor 313 through the kana. Is communicated to the guidelines.

The second hand 361 is connected to the shaft of the fourth wheel 352, the minute hand 362 is connected to the second wheel 354, and the hour hand 363 is connected to the hour wheel 356, and in conjunction with the rotation of the rotor 313. The time (time information) is displayed by these hands.

The drive circuit 18A is provided with a stepping motor 3 according to a drive command from the watch CPU 14.
10 is a circuit for supplying drive pulses having various waveforms. The drive circuit 18A includes a bridge circuit including a p-channel MOS transistor 333a, an n-channel MOS transistor 332a, a p-channel MOS transistor 333b, and an n-channel MOS transistor 332b. The driving coil 311 of the stepping motor 310 includes a p-channel MOS transistor 333a and an n-channel MOS transistor 332.
It is inserted between the connection point of a and the connection point of the p-channel MOS transistor 333b and the n-channel MOS transistor 332b. These MOS transistors 332a
, 332b, 333a, and 333b are applied with a control pulse from the watch CPU 14, whereby a drive pulse is supplied to the drive coil 311 and the rotor 313 is driven.

(Structure of wristwatch type electronic equipment)
Next, the structure of the wristwatch type electronic device 100 of the present embodiment will be described with reference to FIGS. FIG. 5 is a schematic cross-sectional view schematically showing the main body structure of the wristwatch-type electronic device 100.
FIG. 6 is a schematic perspective view schematically showing the antenna 111, the magnetic member 108, the insulating member 109, and the movement 104 in the internal structure of the wristwatch type electronic device 100.

The wristwatch type electronic device 100 includes a case unit 101, a display window 102 attached to the front side opening of the case unit 101, a back cover 103 attached to the rear side opening of the case unit 101, a case unit Movement (clock information display processing unit) 104 arranged in 101
A winding stem (operation shaft) 105 connected to the movement 104, a crown (external operation member) 106 attached to the outer end of the winding stem 105, and a dial 107 disposed inside the display window 102. An annular antenna 111 arranged on the back side of the dial 107, and the antenna 11
1, an annular magnetic member 108 configured to surround 1, a magnetic member 108, and a case portion 101
And an insulating member 109 interposed between the inner surface of the rear cover 103 and the inner surface of the back cover 103.

Here, the movement (time information display processing unit) 104 incorporates the watch CPU 14, the driving circuit 18A, and the driving mechanism 18B described with reference to FIG. The movement 104 may incorporate a power source such as a battery or a large-capacity capacitor as necessary. Further, a display portion is constituted by the indicator window 102, the dial 107, and the pointer portions such as the second hand 361, the minute hand 362, and the hour hand 363.

The magnetic member 108 is made of a magnetic material having a high magnetic permeability and a relatively low coercive force, such as pure iron, electromagnetic soft iron, silicon steel, permalloy, ferrite, and other various alloys.
The magnetic member is formed in a substantially annular shape as a whole, and a cross-sectional shape cut along a plane orthogonal to the circumferential direction is formed in a U-shape opened on the front side (the dial (display plate) 107 side). However, the cross-sectional shape is arbitrary such as a U shape or a V shape as long as it exists on the inner side, the outer side, and the bottom side of the antenna 111 and has an opening shape on the front side.
An antenna 111 is disposed in the annular groove 108a formed by this cross-sectional shape. In addition, the magnetic member 108 is provided with a notch 108b at a predetermined position in the circumferential direction, and the winding stem 105 passes through the notch 108b.

As shown in FIG. 12, the antenna 111 is formed of a coil body in which a conductive wire 111a is wound. Both ends of the conductive line 111a of the antenna 111 are conductively connected to the communication module 110IC mounted on the substrate 110SB by being joined to connection pads 110BP provided in a wiring pattern on the substrate 110SB. Also, the substrate 110S
A tuning capacitor 112 is also mounted on the wiring pattern on B.

The insulating member 109 has an L-shaped cross section so as to cover the outer peripheral surface and the bottom surface of the magnetic member 108, and the outer peripheral surface and the bottom surface opposite to the surface in contact with the magnetic member 108 are the inner surface and back cover of the case unit 101. 103 is in contact with the inner surface. The insulating member 109 is preferably made of an elastic material such as soft synthetic resin or rubber having elasticity.

In this embodiment, the magnetic member 108 is configured to cover the antenna 111 from three sides, the inner circumference side, the outer circumference side, and the bottom side. Further, the magnetic member 108 is positioned in the plane direction by the inner surface of the case portion 101 through the insulating member 109, and is also positioned in the vertical direction (thickness direction) by the inner surface of the back cover 103 through the insulating member 109 as well. Yes. And
The movement 104 is positioned by the inner peripheral surface of the magnetic member 108. That is,
The magnetic member 108 has a function as a member (such as an inner frame) for positioning the movement 104 inside the case body.

The antenna 111 is configured in a coil shape wound many times in the figure,
It may be formed in the shape of a loop wound several times, and the number of turns and the shape of the loop-shaped antenna are arbitrary. More specifically, when the frequency of the carrier wave is 13.56 [MHz], a loop antenna of 2 to 3 turns may be used, and when the frequency is 125 [kHz], several hundreds of turns are required. Become.

Since the antenna gain of the loop-shaped antenna increases as the loop diameter and the opening area increase, the antenna 111 is preferably formed on the outer periphery side of the case body 101 as much as possible. In the present embodiment, the annular magnetic member 108 is disposed on the outer peripheral side of the movement 104.
1 is formed along the inner surface of the antenna 111, and the antenna 111 is formed in the annular groove 108a of the magnetic member 108.
The loop is formed. Therefore, the antenna 111 has a loop diameter substantially close to the outer diameter of the case portion 101.

As shown in FIG. 5, the tuning capacitor 112 connected to both ends of the conductive line 111 a of the antenna 111 and the substrate 110 SB on which the communication module 110 IC is mounted are arranged at appropriate positions in the movement 104.

In the present embodiment, the dial 107 is made of an insulator such as synthetic resin or ceramics in order to enable propagation of electromagnetic waves between the antenna 111 and the outside of the case body. As a result, the display unit disposed on the front surface of the case body serves as an electromagnetic opening, thereby enabling non-contact data communication. The case portion 101 and the back cover 103 are also preferably made of an insulating material. However, as will be described later, the case portion 101 and the back cover 103 are made of metal or the like by providing the magnetic member 108. It can also be made of a conductive material.
Here, only a part of the case portion 101 and the back cover 103 may be made of a conductive material.

As will be described later, when displaying the communication contents during non-contact data communication, as shown by a two-dot chain line in FIGS. 5 and 6, a display body 110D made of a liquid crystal display panel or the like on the substrate 108.
P is preferably mounted and an opening for exposing the display surface of the display body 110DP is preferably provided in the dial plate 107. Thereby, it becomes possible to visually recognize the display content displayed on the display surface of the display body 110DP exposed from the opening of the dial plate 107.

(Operation of wristwatch type electronic device 100)
Next, the operation of the wristwatch type electronic device 100 will be described. FIG. 11 is a sequence diagram illustrating a procedure of contactless data communication between the wristwatch-type electronic device 100 and the external transmission / reception device 510.

As shown in FIG. 11, the external transmission / reception device 510 normally transmits a polling signal (communication request) repeatedly (with a predetermined period) using an asynchronous protocol (step S101).
More specifically, the control device 511 of the external transmission / reception device 510 causes the transmission circuit 512 to generate a polling signal and continues to transmit the polling signal via the high-frequency circuit 514 and the antenna 515. When the wristwatch type electronic device 100 enters the communication range of the external transmission / reception device 510 and receives the polling signal, the wristwatch type electronic device 100 starts communication. At the time of communication, first, data for mutual authentication is sent to the external transmission / reception device 510 (step S102), thereby shifting to the mutual authentication period T01. The external transmission / reception device 510 detects that the wristwatch type electronic device 100 has entered the communication range of itself and transmits data for mutual authentication to the wristwatch type electronic device 100 (step S103). The wristwatch-type electronic device 100 that has received this data transmits response data to the effect that mutual authentication has been completed to the external transmission / reception device 510 (step S104).

When the mutual authentication is completed as described above, the process proceeds to a reading period T02, and the external transmission / reception device 510 transmits read request data to read data from the wristwatch type electronic device 100 (step S105). As a result, the wristwatch-type electronic device 100 reads the corresponding data from the memory address in the memory 110M (see FIG. 3) corresponding to the read request data, and transmits it to the external transmission / reception device 510 (step S106).

As described above, the memory data from the wristwatch-type electronic device 100 is transferred to the external transmission / reception device 510.
Is received, the process proceeds to the determination period T03. In this determination period T03, the external transmission / reception device 510 recognizes the data type and expiration date of the ticket, prepaid card, etc. from the received data, and determines whether or not the content is acceptable (step S10).
7).

When the determination is completed, the external transmission / reception device 510 proceeds to a writing period T04, and transmits data such as the presence / absence of a ride and a payout amount to the wristwatch-type electronic device 100 (step S108).
). Thereby, the wristwatch-type electronic device 100 transmits response data for notifying that the data has been received to the external transmitting / receiving device 510 (step S109).

Communication is completed by the above procedure, and the wristwatch-type electronic device 100 shifts to the internal processing period T05. In this period T05, the data content sent in step S108 is written to the corresponding memory address of the memory 110M, and necessary information is recorded (boarding record).
And update (balance data, etc.). On the other hand, the external transmission / reception device 510 confirms the response data transmitted from the wristwatch-type electronic device 100 in step S109 in the period T05, and then prepares for the next polling process (step S110).

In the mutual processing period T10 including the mutual recognition period T01, the reading period T02, the determination period T03, the writing period T04, and the internal processing period T05, for example, the display body indicated by a two-dot chain line in FIGS. When 110DP is provided, the display body 110DP may display a communication state, a communication processing stage, or communication processing contents (records such as boarding records, balance data or payout data). Further, when a display body such as a liquid crystal display panel is configured to display time information as in the second embodiment described later, the display of time information is temporarily stopped in the mutual processing period T10. May be. At this time,
Instead of the time information, the communication state, the communication processing stage, or the communication processing content may be displayed.

In the embodiment described above, as shown in FIGS. 5 and 6, since the magnetic member 108 is disposed inside the case body, electromagnetic waves propagating between the inside and outside of the case body via the display unit are not generated. It is configured so as not to be easily influenced by the case unit 101 and the back cover 103. That is, even when at least a part of the case portion 101 and the back cover 103 is made of a conductive material, the variable magnetic field components accompanying electromagnetic waves used for non-contact data communication are concentrated in the vicinity of the antenna 111. It becomes difficult to be affected by. This is because the magnetic member 108 forms a part of a magnetic circuit around the conductive wire 111a of the antenna 111, and the magnetic member 10
8 is provided with a magnetic permeability higher than that of the case portion 101, so that the magnetic flux of the variable magnetic field component passes through the magnetic member 108 more. In particular, in this embodiment, the antenna 1
11 loop-shaped conductive wires 111a, a case portion 101, a back cover 103, and a movement 10
4, even if the case portion 101, the back cover 103, and the movement 104 are made of a conductive material, the influence can be sufficiently reduced. For example,
The magnetic flux of the variable magnetic field component passes through the magnetic member 108, and the case portion 101 and the back cover 10 correspondingly.
3 is less likely to pass through the case 101 and the back cover 1 due to the varying magnetic field component.
03 is less likely to generate eddy currents, and as a result, it is possible to suppress a decrease in communication sensitivity and communication distance due to eddy current loss.

Further, the magnetic member 108 causes the antenna 111 to be rotated 180 around the loop-shaped conductive wire 111a.
By covering over an angular range exceeding the degree, the magnetic flux caused by the variable magnetic field component is easily concentrated in the magnetic member 108. That is, since the magnetic resistance of the magnetic circuit passing through the magnetic member 108 around the conductive wire 111a is configured to be lower than the surroundings, the magnetic flux caused by the variable magnetic field component easily passes through the magnetic member 108. As a result, the magnetic flux is concentrated in the magnetic member 108.

In particular, in the present embodiment, the movement 1 between the antenna 111 and the side (outer peripheral) case 101, between the antenna 111 and the lower back cover 103, and between the antenna 111 and the inner movement 1.
Since the magnetic members 108 are respectively disposed between the case portion 101 and the back cover 10.
3 or the movement 104 is made of a conductive material, the variable magnetic field component distributed to the side, below or inside of the antenna is converged in the magnetic member 108.
And the influence of the back cover 103 can be further reduced.

In the present embodiment, it is necessary to dispose basically no conductive member on the side of the display unit where the electromagnetic wave propagates and the electromagnetic wave propagates. For example, in this embodiment, the dial 107 is made of an insulator. In addition, the magnetic member 108 is configured to open to the display unit side, and since the magnetic member 108 is not disposed on the display unit side of the antenna 111,
In the electromagnetic wave radiation characteristic and electromagnetic wave reception characteristic of the antenna 111, it becomes possible to give stronger directivity to the display unit side. Further, the magnetic member 108 is provided on the display portion side of the antenna 111.
Is not arranged, the antenna 111 can be arranged close to the display side, which is more advantageous in terms of communication sensitivity and communication distance, reduces the thickness of the case body, The main body of the device 100 can be thinned.

Further, in the case of the present embodiment, since the insulating member 109 is interposed between the magnetic member 108 and the case portion 101 and the back cover 103, the influence of the case portion and the back cover can be further reduced, and this insulation can be achieved. Since the member 109 also functions as a buffer material, the magnetic member 108 and the like are prevented from being damaged, and the impact resistance of the device can be improved. In particular, since the magnetic member 108 is often made of a brittle material such as a sintered material such as high permeability ferrite, the insulating member 109 is used to prevent damage to the magnetic member 108 made of such a brittle material. Is very effective.

The magnetic member 108 of the present embodiment is arranged such that the movement 104 (and the dial plate 107 in the case body).
) Is configured to function as a member (inner frame) for positioning, so that the number of parts is hardly increased and the size of the main body structure is not increased compared to the conventional wristwatch structure. can do. In other words, in the conventional wristwatch, the inner frame is made of a magnetic member, and the antenna is arranged in the inner frame, so that the conventional electronic structure is equipped with a contactless data communication function with almost no change. Equipment can be configured.

[Second Embodiment]
Next, a second embodiment of the wearable electronic device according to the present invention will be described with reference to FIG.
Here, in the second embodiment, the wristwatch-type electronic device 200 is only slightly different from the wristwatch-type electronic device 100 of the first embodiment, and the configuration of the external transmission / reception device 510 of the communication partner is exactly the same. Description of is omitted.

As shown in FIG. 7, the wristwatch-type electronic device 200 according to the second embodiment is basically similar to the first embodiment in a case portion 201, a display window 202, a back cover 203, a movement 204, a winding stem 205, It has a crown 206 and a dial 207. However, in this embodiment, the back cover 20
3 is comprised with insulating materials, such as a synthetic resin.

Inside the case body, an annular antenna 211 including a coiled conductive wire, which is configured in substantially the same manner as in the first embodiment, is disposed, and this antenna 211 and the case portion 201 outside thereof are arranged.
An outer ring portion 208A of the magnetic member 208 is disposed between the antenna 211 and the movement 204 inside thereof, and an inner ring portion 208B of the magnetic member 208 is disposed between the antenna 211 and the movement 204 inside thereof. Both the outer ring portion 208A and the inner ring portion 208B are formed in an annular shape, and are provided with both notches 208b through which the winding stem 205 can pass. An insulating member 209 similar to that in the first embodiment is disposed between the magnetic member 208 and the case portion 201 and the back cover 203.

On the other hand, the loop axis of the conductive wire of the antenna 211 (the loop axis coincides with the coil axis since this antenna has a coiled conductive wire) is provided on the display portion including the display window 202 and the dial 207. In this embodiment, since the back cover 203 is made of an insulating material, the loop shaft is configured to pass through an insulating member on both sides. . For this reason, even if the whole case part 201 is comprised with the electroconductive material, it can communicate comparatively favorable.

In this embodiment, the magnetic member 208 is not disposed on the back cover 203 side of the antenna 211. However, since the back cover 203 is made of an insulating material, the influence on communication is small. In this structure, an outer ring portion 208A is disposed between the antenna 211 and the case portion 201, and an inner ring portion 208B is disposed between the antenna 211 and the movement 204. The variable magnetic field component associated with is configured such that magnetic flux passes intensively through the outer ring portion 208A and the inner ring portion 208B disposed on both sides of the antenna 211, so that at least a part of the case portion 201 and the movement 204 Even if it is made of a conductive material, communication can be performed without being greatly affected.

[Third Embodiment]
Next, a third embodiment of the wearable electronic device according to the present invention will be described with reference to FIG. Here, in the third embodiment, the wristwatch-type electronic device 300 is only slightly different from the wristwatch-type electronic devices 100 and 200 of the first and second embodiments, and the external transmission / reception apparatus 510 of the communication partner.
Since the configuration is completely the same, description thereof will be omitted.

As shown in FIG. 8, the wristwatch-type electronic device 300 of the third embodiment is basically the same as the first embodiment, the case portion 301, the display window 302, the back cover 303, the movement 304, the winding stem 305, A crown 306 and a dial 307 are provided.

In the wristwatch-type electronic device 300, an antenna 321 having a loop-shaped conductive wire is formed on the outer peripheral side of the movement 304, and an annular magnetic member 30 is provided so as to surround the antenna 321.
8 is arranged. The magnetic member 308 has an L-shaped cross section so as to be disposed between the antenna 321 and the case portion 301 and between the antenna 321 and the back cover 303. An annular insulating member 309 having an L-shaped cross section is disposed between the magnetic member 308 and the case portion 301 and the back cover 303.

As shown in FIG. 13, the antenna 321 includes a loop-shaped conductive wire 321a made of a conductive pattern formed on an annular substrate 321SB. In the illustrated example, the conductive wire 321a is configured to be wound two rounds on both the front and back surfaces of the substrate 321SB. Here, the conductive line 321a formed on the back surface of the substrate 321SB is connected to the substrate 321S.
Although conductively connected to the one formed on the surface of B through the through hole 321TH, it does not appear in the figure. Both ends of the conductive line 321a are connected to the tuning capacitor 322 and to the communication module 320IC.

The substrate 321SB configured as described above has a cross section L of the magnetic member 308 as shown in FIG.
The magnetic member 308 is disposed between the antenna 321 and the case body 301, and at the same time, the magnetic member 308 is disposed between the antenna 321 and the back cover 303.
Will be placed. For this reason, similarly to each of the above embodiments, the variable magnetic field component accompanying the electromagnetic wave used for communication can be concentrated in the vicinity of the antenna 321. Therefore, the case portion 301 and the back cover 303 are made of a conductive material. However, these effects can be reduced and communication can be performed without any trouble.

[Fourth Embodiment]
Next, a fourth embodiment of the wearable electronic device according to the present invention will be described with reference to FIG. Here, in the fourth embodiment, the wristwatch-type electronic device 400 is only slightly different from the wristwatch-type electronic devices 100 and 200 of the first and second embodiments, and the external transmission / reception device 510 of the communication partner is used.
Since the configuration is completely the same, description thereof will be omitted.

As shown in FIG. 9, the wristwatch-type electronic device 400 of the fourth embodiment is basically the same as the first embodiment in the case unit 401, the display window 402, the back cover 403, the movement 404, the winding stem 405, A crown 406 and a dial 407 are provided.

In this embodiment, an annular substrate 421SB similar to that of the third embodiment is disposed on the outer periphery side of the movement 404, and an antenna provided with a loop-shaped conductive wire 421a similar to that of the third embodiment on this substrate 421SB. 421 is formed. A tuning capacitor and a communication module similar to those described above are also mounted on the substrate 421SB.

An annular magnetic member 408 is disposed between the antenna 421 and the case portion 401, and an annular insulating member 409 is disposed between the magnetic member 408 and the case portion 401. In this embodiment, the magnetic member 408 is disposed only between the antenna 421 and the case portion 401.

Further, in this embodiment, the back cover 403 includes a lid frame portion 403A and a magnetic material portion 40 having a higher magnetic permeability than the magnetic member 408 with respect to the lid frame portion 403A and the case portion 401.
3B. The end surface on the back side of the magnetic member 408 and the inner surface of the magnetic material portion 403B are in contact with each other.

In the present embodiment, the magnetic member 408 and the magnetic material portion 40 of the back cover 403 around the antenna 421.
3B and a magnetic circuit with high permeability constituted adjacent to each other.
Even if 01 is made of a conductive material, its influence on communication is reduced.

In this embodiment, the back cover 403 may be made of a nonmagnetic member such as synthetic resin and an insulating material. In this case, since the presence of the back cover 403 can be ignored electromagnetically, only the effect of the magnetic member 408 can be obtained, and communication can be performed without any trouble even if a conductive material is used for the case portion 401.

[Fifth Embodiment]
Next, with reference to FIG. 10, a wristwatch type electronic apparatus 600 according to a fifth embodiment of the present invention will be described. Since this embodiment is also configured to perform non-contact data communication with the external transmission / reception device 510 illustrated in FIGS. 1 and 2, description of the configuration of the external transmission / reception device 510 is omitted.

The wristwatch-type electronic device 600 includes a case portion 601 made of a conductive member such as metal, a display window 602 attached to the front-side opening of the case portion 601, and a rear-side opening of the case portion 601. A back cover 603 made of an insulator and a circuit board 604 disposed inside the case portion 601 are provided. On the circuit board 604, a watch IC 605,
A display body 606 made of a liquid crystal panel or the like and a crystal oscillator 607 for generating a clock are mounted, and a storage battery 608 made of a chemical secondary battery or a capacitor is mounted. That is, the wristwatch type electronic device 600 is a digital display type wristwatch type electronic device including the display body 606.

An antenna 621 provided with a loop-shaped conductive wire 621a is formed on the surface of the circuit board 604, and the communication module 620 similar to that of the first embodiment is formed on the back surface of the circuit board 604.
IC is mounted.

In this embodiment, an annular magnetic member 628 made of a soft magnetic material having a higher magnetic permeability than the case portion 601 is fixed to the front side of the case portion 601 via an insulator 609. A display unit including a display window 602 and a display body 606 is disposed inside. The magnetic member 628 has a U-shaped cross section, and the circuit board 604 is disposed inside the U-shaped.
The antenna 621 formed above is arranged. Therefore, the magnetic member 628 is disposed between the antenna 621 and the case portion 601, and the magnetic member 628 has a shape that opens toward the display portion (inside) when viewed from the antenna 621.

In this embodiment, even when a conductive material is used for the case portion 601, non-contact data communication performed via the antenna 621 is affected by the case portion 601 due to the magnetic member 628 being arranged. It has become difficult.

At this time, the back cover 603 may be made of a conductive material. However, in order to further improve communication sensitivity and communication distance, it is preferable that the back cover 603 is made of an insulating material such as a synthetic resin.

In this embodiment, the magnetic member 628 is exposed on the outer peripheral surface of the display unit. However, similarly to the first to fourth embodiments, the magnetic member 628 may be arranged inside the case body. Further, the shape and arrangement of the magnetic member 628 of the present embodiment (that is, a structure that constitutes a part of the case body) may be used in the device structure of the first to fourth embodiments.
Furthermore, the shape and arrangement of the magnetic members of the first to fourth embodiments may be used for the electronic apparatus (for example, digital display type electronic apparatus) of the present embodiment.

The wearable electronic device having the non-contact data communication function according to the present invention is not limited to the illustrated example described above, and various modifications can be made without departing from the scope of the present invention. is there. For example, all the electronic devices of the above embodiments have a wristwatch function, but the present invention is similarly applied to a divers computer, a stopwatch, and even an electronic device that does not have a timekeeping function. Can do.

DESCRIPTION OF SYMBOLS 100 Wristwatch-type electronic device 101 Case part 102 Display window 103 Back cover 104 Movement 105 Winding stem 106 Crown 107 Dial 108 Magnetic member 109 Insulating member 1
10 Non-contact communication part 110IC Communication module 111 Antenna 111a Conductive wire.

Claims (4)

An antenna for receiving electromagnetic waves, a magnetic member, and a case body that houses the antenna and the magnetic member;
A back cover attached to one opening side of the case body;
A dial plate made of an insulating material disposed on the other opening side of the case body;
A movement including a pointer driving unit made of a conductive material that drives a pointer that performs time display ;
The case body and the back cover are made of a conductive material,
An insulating member for positioning the magnetic member and the magnetic member is disposed between the case body and the antenna,
The magnetic member is
Provided with higher magnetic permeability than the case body and the back cover, between the antenna and the back cover
And is also arranged between the antenna and the pointer drive unit,
The received magnetic field fluctuation component is focused on the antenna inside the case body, and the electromagnetic wave received by the antenna propagates between the inside and outside of the case body via the dial. Wristwatch characterized by doing. It has a display part which is arranged on the other end side of the case body and displays information,
The wristwatch according to claim 1, wherein the magnetic member is not disposed on the display portion side of the antenna.   The wristwatch according to any one of claims 1 and 2, wherein the magnetic member is disposed between a conductive wire of the antenna and the case body.   The wristwatch according to any one of claims 1 to 3, wherein the magnetic member is disposed between a coiled conductive wire of the antenna and a case body.

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