JP2003324396A - Data communication equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide data communication equipment which has a clocking means and a clock display means and whose cost can be reduced. <P>SOLUTION: This data communication equipment is formed in a watch type shape as a whole, and is provided with a communication unit 1, the external shape of the case 1a of which is circular and which communicates with the opposite side communication equipment, a clock unit 2, the external shape of the case 2a of which is circular and which is attached freely attachably and detachably to/from the case 1a of the communication unit 1 so as to overlap the case 1a of the communication unit 1, a frame-shaped housing 3 for holding the communication unit 1, and a band 4 for wearing attached to the housing 3 in a freely attachable and detachable way. A pair of electrodes for communication is provided exposedly side by side on the rear face of the case 1a of the communication unit 1 in the width direction of the band 4, and a user wearing the data communication equipment touches a contact electrode for the opposite party side communication equipment to perform data communication with the opposite party side communication equipment. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
When the user touches the contact electrode provided on the other party's communication device, which is equipped with two communication electrodes, a part of the user's body is used for the transmission path to communicate with the other party's communication device. The present invention relates to a data communication device for performing data communication in.

[0002]

2. Description of the Related Art Conventionally, as this type of data communication apparatus, there has been proposed a data communication apparatus having a wristwatch-shaped appearance and having a clock means for clocking the current time and a display means for displaying the current time clocked by the clock means. ing.

[0003]

However, since the clock function and the display function are not necessarily required for some users, the data communication device with the clock means and the display means and the data without the clock means and the display means are required. When designing and producing a communication device separately,
There was a problem that production efficiency was poor and costs such as manufacturing costs and management costs were high. Further, even when the number of designs such as display means is increased, there is a problem that production efficiency is poor and costs such as manufacturing cost and management cost become high.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a data communication device having a clock means and a clock display means and capable of reducing the cost.

[0005]

In order to achieve the above object, a user contacts two communication electrodes facing a user and a contact electrode provided on a partner communication device. At this time, a data communication unit that performs data communication with the other communication device by using at least a part of the user's body as a transmission path through each communication electrode, and data connected to the data communication unit A case of a clock unit, which is equipped with a communication unit having a data storage unit for storing and has a time measuring means for measuring the current time and a display means for displaying the current time measured by the time measuring means, is detachably attached to the case of the communication unit. The communication unit and the timepiece unit can be designed and manufactured separately, so even if the specifications of the timepiece unit are increased, the communication unit can be By Tonghua, production efficiency is improved, thereby the because cost can be reduced and manufacturing cost and management cost cost. Further, since the timepiece unit can be appropriately removed, the communication unit can be shared when manufacturing products that do not require the timepiece unit, and products that require the timepiece unit and products that do not require the timepiece unit are produced. Even in such a case, the production efficiency can be improved and the manufacturing cost and the management cost can be reduced, so that the cost can be reduced. Moreover, it becomes possible to prepare a member that can be replaced with the timepiece unit and replace it with the timepiece unit.

According to a second aspect of the present invention, in the first aspect of the present invention, since the communication unit is integrated with a mounting means to be mounted on a user's arm, the communication unit should be mounted on the user's arm for use. And the usability is improved.

According to a third aspect of the present invention, in the second aspect of the present invention, the mounting means has a casing for holding the communication unit and a mounting band detachably attached to the casing. It is possible to replace only the band in the mounting means. Therefore, when the band is consumed, only the band needs to be exchanged, and the choice of materials and design of the band can be expanded.

According to a fourth aspect of the invention, in the third aspect of the invention, the communication unit is mounted on a user's arm because the communication electrodes are arranged side by side along the width direction of the band. In this case, if the communication electrode located on the fingertip side is used as a signal electrode and the communication electrode located on the shoulder side is used as a ground electrode (electrode having a reference potential), the user's fingertip or hand is the other side communication device. When the contact electrode is contacted, a loop-shaped path having a relatively small impedance is formed between the communication unit and the partner communication device, and therefore data communication with the partner communication device is performed with a relatively small energy. Can be done stably.

According to a fifth aspect of the present invention, in the first to fourth aspects of the invention, the case of the communication unit has a built-in power source for a circuit section including the data communication section and the data storage section, and a power source. Is provided with a power supply output terminal connected to the output end of the clock unit, and the timepiece unit has a power supply input terminal for supplying power to a circuit unit including the timing means and the display means, and the power supply input terminal is the communication terminal. Since the timepiece unit is arranged in a position to be electrically connected to the power supply output terminal of the communication unit when the case of the timepiece unit is attached to the case of the unit, the power supply output terminal and the timepiece are separated from the power supply of the communication unit. Since power can be supplied to the circuit section of the timepiece unit via the power input terminal of the unit, it is not necessary to incorporate a power source in the case of the timepiece unit. It is possible to reduce the cost and thickness of the timepiece unit. Further, it is possible to reduce the weight of the entire device as compared with the case where a power source is provided for each of the communication unit and the timepiece unit.

According to a sixth aspect of the present invention, in the first to fourth aspects of the invention, the case of the communication unit has a power input terminal for supplying power to a circuit section including the data communication section and the data storage section. The case of the timepiece unit is provided with a power supply for a circuit section including the timekeeping means and the display means, and has a power output terminal connected to an output end of the power supply. Since it is arranged at a position electrically connected to the power input terminal of the communication unit when the case of the timepiece unit is attached to the case of the communication unit, the power supply output terminal and the power output terminal of the timepiece unit are Since power can be supplied to the circuit section of the communication unit via the power input terminal of the communication unit, it is necessary to incorporate a power supply in the case of the communication unit. Ku, it is possible to reduce the cost and thickness of the communication unit. Further, it is possible to reduce the weight of the entire device as compared with the case where a power source is provided for each of the communication unit and the timepiece unit.

According to a seventh aspect of the present invention, in the fourth aspect of the invention, the communication unit is provided with a power input terminal for supplying power to a circuit section including the data communication section and the data storage section, and the timepiece unit is provided. A power supply input terminal for supplying power to a circuit section including the time measuring means and the display means is provided, and the housing has a power supply output terminal connected to the power supply for incorporating a power supply for supplying power to each circuit section. Since the power supply output terminal is provided at a position electrically connected to each of the power supply input terminals, it is necessary to incorporate a power supply such as a battery in the case of the communication unit and the case of the timepiece unit. Therefore, the cost can be reduced, and the power source can be replaced regardless of the circuit units of the communication unit and the timepiece unit. Further, it is possible to reduce the weight of the entire device as compared with the case where a power source is provided for each of the communication unit and the timepiece unit.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) As shown in FIGS. 1 to 3, a data communication apparatus of this embodiment is formed in a wristwatch shape as a whole, and a case 1a has a circular outer shape. In addition, the communication unit 1 that communicates with the communication device on the other side and the communication unit 1 having a circular outer shape of the case 2a and overlapping the case 1a of the communication unit 1
Clock unit 2 detachably attached to the case 1a
And a frame-shaped housing 3 for holding the communication unit 1, and a housing 3
And a wearing band 4 that is detachably attached. In the present embodiment, the housing 3 and the band 4 constitute a mounting means for mounting the communication unit 1 on the arm of the user.

As the band 4, for example, a band having the same shape as a band of a general wristwatch may be used.
The pair of band mounting portions 31, 31 provided on the housing 3 are detachably attached using rod-shaped spring rods 5, 5. Therefore, the band 4 can be replaced like a general wristwatch. In addition, in the band 4 according to the present embodiment, one end of each of the bands 4 is attached to the band mounting parts 31 and 31.
5 is composed of a pair of band pieces 4a, 4a attached by using a pin 5 of a buckle (not shown) attached to the other end of one band piece 4a and the other band piece 4a.
It can be attached to the user's arm by engaging with any one of a plurality of engaging holes (not shown) arranged in the longitudinal direction of the band piece 4a at the other end thereof.

On the back surface of the case 1a of the communication unit 1,
A pair of communication electrodes 11 and 11 (see FIGS. 4 and 18C) arranged side by side along the width direction of the band 4 are exposed. Therefore, when the data communication device is attached to the user's arm by the attaching means, the pair of communication electrodes 11 and 11 face the user's arm and are aligned in the longitudinal direction of the user's arm ( One communication electrode 11 is on the fingertip side, and the other communication electrode 11 is on the shoulder side).

As shown in FIG. 4, the communication unit 1 includes the above-described two communication electrodes 11 and 11 and a communication electrode when a user makes contact with a contact electrode provided on a partner communication device (not shown). A data communication unit 13 that communicates data with a partner communication device by using a part of the user's body as a transmission path via 11, 11, and is handled by the data communication unit 13 connected to the data communication unit 13. Data storage unit 14 for storing data
It has and. In the present embodiment, the communication unit 1 includes the data communication unit 13 and the data storage unit 14.
Of the circuit unit C1 (see FIG. 5), and the case 1a of the communication unit 1 includes the circuit unit C1 in addition to the circuit unit C1.
A power source 16 (see FIG. 5) including a battery for supplying power to is also incorporated.

As shown in FIG. 6, the timepiece unit 2 has a timekeeping means 21a for counting the current time and a timekeeping means 2 for measuring the current time.
The display unit 21b is composed of a liquid crystal display for displaying the current time measured by 1a. In the present embodiment, the circuit section C2 of the timepiece unit 2 is configured by the time measuring means 21a and the display means 21b, and the case 2a of the timepiece unit 2 has the circuit section C2 in addition to the circuit section C2.
A power source 23 (see FIG. 7) including a battery for supplying power to is also incorporated.

Hereinafter, the data communication device of this embodiment is used as an electronic key in which identification data is registered, and the communication device on the other side is
An electronic key system as an electronic lock device that receives identification data from an electronic key will be illustrated.

In this electronic key system, as shown in FIG. 8, an electronic key A in which identification data is registered is attached to a user M, and a user M is attached to an object Ob to which a lock mechanism 59 such as a house is attached. A contact electrode 51 that can be contacted with is provided. The contact electrode 51 is attached to the electronic lock device 50 that receives the identification data from the electronic key A, and when the user M touches the contact electrode 51, the body of the user M is separated between the electronic key A and the electronic lock device 50. A transmission line through
The identification data is transmitted from the electronic key A to the electronic lock device 50 through the user M. Here, the identification data is for each object O
Different for each b.

In the present embodiment, the data transmitted between the electronic key A and the electronic lock device 50 is modulated, and the ASK modulation system using an AC signal as a carrier is adopted as the modulation system. The electronic key A is the same as that shown in FIGS.
As described above, since the wristwatch-like shape is formed as a whole, the two communication electrodes 11, 11 provided on the back surface of the case 1a of the communication unit 1 when the user M wears the electronic key A on his arm. Directly contacts the user M. Here, both communication electrodes 11 and 11 are connected to the data transmission unit 13a. The electronic key A is provided with an identification data setting unit 14 which is a nonvolatile memory capable of storing a plurality of identification data as the above-mentioned data storage unit 14, and the identification data stored in the identification data setting unit 14 is a micro data. The identification data setting unit 14 in the arithmetic control unit 15 including a computer
Read out from the device, modulated by the data transmission unit 13a by the ASK modulation method, and then applied to both communication electrodes 11 and 11.

Since the power source of the electronic key A is the battery 16 and the power capacity is relatively small, the electronic key A is provided with a normal mode in which it operates normally and a standby mode in which it consumes less power than usual. Thus, while the user M is not in contact with the contact electrode 51 provided on the electronic lock device 50, the standby mode is set to suppress power consumption. That is, the calculation control unit 1 is provided in the power supply path from the battery 13 to the data transmission unit 13a and the identification data setting unit 14.
The switch elements SW1 and SW2 whose opening and closing are controlled by 5 are inserted, and in the standby mode, the arithmetic control unit 15 turns off the switch elements SW1 and SW2, and the arithmetic control unit 15
Becomes a so-called sleep mode, and the functions other than those required for activation are stopped in the arithmetic and control unit 15. Note that FIG. 9 and FIG.
In 0, a broken line indicates a power supply path.

In the standby mode, the power is not supplied to the data transmitting section 13a and the arithmetic control section 15 is also in the sleep mode. Therefore, the start signal detecting section for detecting that the user M touches the contact electrode 51. 17 is provided separately from the data transmission unit 13a. The start signal detector 17 is connected to the communication electrode 11 and the circuit ground of the electronic key A so that the user M wearing the electronic key A can use the electronic lock device 50.
When the contact electrode 51 of the start signal is contacted, a start signal described later is received from the electronic lock device 50, and the start signal detection unit 1
7 receives the start signal and activates the arithmetic control unit 15. When the arithmetic control unit 15 is activated, it shifts to the normal mode,
The arithmetic control unit 15 supplies power from the battery 16 to the data transmission unit 13a and the identification data setting unit 14 by turning on the switch elements SW1 and SW2. here,
The arithmetic control unit 15 has a built-in timer. When the normal mode is started, the timer starts a timed operation, and when the timed operation of the timer ends, the arithmetic control unit 15 is configured to return to the standby mode again. is there. The time limit by the timer, that is, one operation time in the normal mode is set to the time required for the electronic key A to receive the identification data from the electronic lock device 50. In the electronic key A, the data transmission unit 13a, the arithmetic control unit 15, and the start signal detection unit 17 configure the above-described data communication unit 13.

On the other hand, as shown in FIG. 10, the electronic lock device 50 is provided with a contact electrode 51 and a ground terminal 52 connected to the circuit ground. The contact electrode 51 is connected to the data receiving section 53. The data receiving unit 53 extracts only the frequency component component corresponding to the carrier of the modulated signal from the voltage applied between the contact electrode 51 and the ground terminal 52 by the band filter, and then divides the output of the band filter into two systems. However, a noise removing unit is provided which delays one phase of the equally divided signal by 180 degrees with respect to the other and adds a non-delayed signal and a delayed signal to remove a noise component. That is, in this embodiment, since the modulation signal from the electronic key A is modulated by the ASK modulation method, the contact electrode 51 and the ground terminal 5 are
As shown in FIG. 11 (a), the voltage applied between 2 and 2 has a period with a large amplitude (hereinafter referred to as H period) Sh and a period with a small amplitude (hereinafter referred to as L period) Sl. (The illustrated example assumes the waveform after passing through the bandpass filter). Since the signal component in the L period Sl is a noise component, it is necessary to remove the noise component and extract the signal component in order to extract the identification data from the modulated signal.

As a technique for removing the noise component, it is conceivable to set a threshold value with respect to the voltage applied between the contact electrode 51 and the ground terminal 52. However, the noise component has various conditions (degree of sweating, Since it largely varies depending on the material and arrangement of members around the person, it is difficult to completely separate the signal component from the noise component even if a constant value is set as the threshold value. Therefore, in the present embodiment, the signal applied between the contact electrode 51 and the ground terminal 52 is equally divided into two systems, and the phase of one signal is changed to the other signal (that is, as shown in FIG. 11B). A signal having the same phase as in FIG. 11A is delayed by 180 degrees, and both signals are added to generate a signal as shown in FIG. 11C. In short, FIG. 11 (a) and FIG. 11 (b)
As can be seen by comparing the amplitudes of the signals shown in and in each half cycle, the absolute values of the amplitudes differ between the half cycle located at the start time of the H period Sh and the half cycle located at the start time of the L period Sl. It becomes a cycle. That is, H period Sh
At the start of the signal, the non-delayed signal has a larger amplitude than the half cycle of the delayed signal, and at the start of the L period Sl, the delayed signal has a larger amplitude than the half cycle of the undelayed signal. If it is prescribed here that the H period Sh starts in a positive half cycle (that is, the upper half cycle in FIG. 11) and ends in a negative half cycle (that is, the lower half cycle in FIG. 11). , Fig. 11
As in (c), a positive signal can be taken out at the start of the H period Sh, and a negative signal can be taken out at the start of the L period Sl. To get a similar signal,
A configuration may be adopted in which the envelope of the voltage between the contact electrode 51 and the ground terminal 52 is detected and then differentiated. The positive and negative signs may be reversed, and the delayed signal and the undelayed signal may be subtracted instead of being added.

As described above, the H period Sh and the L period Sl
If the start time point of and is extracted, an H level signal is generated in response to the signal indicating the start of the H period Sh, and an L level signal is generated in response to the signal indicating the start of the L period Sl.
This means that the identification data transmitted from the electronic key A has been extracted.

As described above, the electronic key A receives the start signal when the user M touches the contact electrode 51 and shifts from the standby mode to the normal mode. It is necessary to send a start signal from the contact electrode 51 when it contacts 51. The electronic lock device 50 according to the present embodiment detects the contact of the user M with the contact electrode 51 in order to detect the contact electrode 51.
A contact detection unit 56 is connected to the contact detection unit 56. The contact detection unit 56 is configured to function like a well-known touch switch and notify the calculation control unit 55 when the contact of the user M with the contact electrode 51 is detected. is there. A well-known technique as a touch sensor is used for the contact detection unit 56 of this type. As this kind of technique, for example, an outer peripheral electrode is formed around the contact electrode 51, a planar capacitor is formed by the contact electrode 51 and the outer peripheral electrode, and the capacitance of the planar capacitor changes due to the proximity of the human body to the contact electrode 51. A configuration for detecting the contact of the user M is known. When the contact detector 56 detects the contact of the user M with the contact electrode 51, the calculation controller 5
5, the start signal generator 5 connected to the contact electrode 51
7 is operated and the electronic key A attached to the user M who is in contact with the contact electrode 51 through the start signal generator 57.
The start signal is transmitted to. A sine wave signal having a constant amplitude is used as the start signal.

The electronic lock device 50 is equipped with a power supply circuit 58. The power supply circuit 58 is connected to a commercial power supply when it is installed in a house or the like, and the power supply circuit 58 is connected to a battery when it is installed in an automobile or the like. Switch elements SW3 and SW4 are inserted in power supply paths from the power supply circuit 58 to the data receiving section 53 and the start signal generating section 57, respectively. The switch elements SW3 and SW4 are opened and closed by the arithmetic control unit 55. The calculation control unit 55 has a sleep mode in which the functions are stopped except for the portion that is activated when the contact M of the user M is detected by the contact detection unit 56. When the contact of the user M with the electrode 51 is detected, the sleep mode is released. Further, the arithmetic and control unit 55 has a built-in timer for starting a time period when the sleep mode is released, generates the start signal by turning on the switch elements SW3, SW4 only during the time period operation of the timer, and is received thereafter. The modulated signal is demodulated in the data receiving section 53. The time limit of the timer is set to the time required to receive the identification data.

As shown in FIG. 8, the electronic key A and the electronic lock device 50 are the same as the electronic key A and the communication electrode 11.
The user M is attached so that one side is located on the fingertip side and the other side is located on the shoulder side, and when the contact electrode 51 provided on the electronic lock device 50 comes into contact with the fingertip or hand of the user M, the fingertip The user M between the side communication electrode 11 and the contact electrode 51 functions as a transmission path, and the impedance Zx including the user M between the shoulder side communication electrode 11 and the ground terminal 52 (shoulder side Impedance Z1 at interface between communication electrode 11 and user M + impedance Z2 of user M + impedance Z3 between user M and ground terminal 52 (capacitance component C
x)). That is, a loop-shaped path having a relatively small impedance Zx is formed between the electronic key A and the electronic lock device 50, and the modulated signal transmitted from the electronic key A can be received by the electronic lock device 50. Become. The capacitance component Cx greatly varies depending on the distance between the ground terminal 52 and the user M and the surrounding environment, and the impedance Zx of the transmission line greatly changes not only according to the magnitude of the capacitance component Cx but also the degree of sweating by the user M. Therefore, the upper limit of the current flowing through the user M is, for example, 50.
It is designed to be smaller than 0 μA.

Here, since the user M is used as one electrode of the capacitance component Cx, if the area of the conductor connected to the shoulder side communication electrode 11 is constant, the shoulder side communication electrode 11 is used. Compared with the case where the electrode 11 is not in direct contact with the user M, the impedance Z1 at the interface between the shoulder-side communication electrode 11 and the user M becomes smaller, so that the shoulder-side communication electrode 11 and the ground terminal 52 are connected. The impedance Zx between them becomes small, and as a result, the electronic key A can transmit the identification data to the electronic lock device 50 with relatively small energy. The ground terminal 52 of the electronic lock device 50 is grounded at an appropriate place on the object Ob.

The electronic lock device 50 is provided with a lock mechanism 59 for locking and unlocking the object Ob. As the lock mechanism 59, for example, a lock mechanism having a dead bolt is used to lock and unlock the object Ob by advancing and retracting the dead bolt by a motor or a solenoid. This type of locking mechanism 59 is used in electric locks. By the way, the arithmetic control unit 55 is provided with a key data storage unit 54 in which identification data transmitted from the electronic key A and key data having a relationship satisfying a predetermined condition are registered. Here, the identification data and the relationship satisfying the predetermined condition mean not only the case where the identification data matches the identification data, but also the relationship such that a specified value is obtained when combined with the identification data according to a predetermined rule. Then, the arithmetic control unit 55 locks and unlocks the lock mechanism 59 when the identification data transmitted from the electronic key A and the key data stored in the key data storage unit 54 satisfy the predetermined condition. Whether to lock or unlock the lock mechanism 59 depends on the locked / unlocked state of the lock mechanism 59 at the time when the key data is input, and unlocks in the locked state and locks in the unlocked state. Further, as described above, since a plurality of identification data can be registered in the electronic key A,
When any of the identification data registered in the electronic key A and the key data satisfy the predetermined condition, the lock mechanism 59 is locked and unlocked. The key data storage unit 54 stores the mask R
The key data can be made unchangeable using an OM, a DIP switch, a jumper switch, a circuit pattern, or the like, but a non-volatile memory may be used to make the key data changeable.

The operation of locking and unlocking the electronic lock device 50 described above will be briefly described together. First, when the user M wearing the electronic key A contacts the contact electrode 51, the contact detection unit 56 releases the sleep mode of the arithmetic control unit 55 provided in the electronic lock device 50, and the data reception unit 53 and the start signal generation. Power is supplied to the unit 57 from the power supply circuit 58.
When power is supplied to the start signal generator 57, the start signal is sent from the contact electrode 51, and the start signal is input to the communication electrode 11 in the electronic key A. In the electronic key A, when the start signal detection unit 17 detects the start signal, the sleep mode of the arithmetic and control unit 15 is released, and the battery 1 is stored in the data transmission unit 13a and the identification data setting unit 14.
Power is supplied from 6. Further, the timer built in the arithmetic control unit 15 starts the timed operation. Identification data setting section 1
When the power is supplied to 4, the identification data is read from the identification data setting unit 14, the identification data is input to the data transmission unit 13a through the operation control unit 15, and the data transmission unit 1
At 3a, a modulation signal obtained by modulating the identification data is transmitted through the communication electrode 11.

In the electronic lock device 50, after the start signal is transmitted, the timer built in the arithmetic control unit 55 starts the timed operation, and the data receiving unit 53 waits for the reception of the modulation signal. That is, the electronic lock device 50 is in a state of waiting for reception of the modulated signal after sending the start signal, and when the modulated signal is received, the data receiving section 53 demodulates the demodulated identification data and collates the key data. When the identification data and the key data satisfy the predetermined conditions as described above, the arithmetic control unit 55
The locking / unlocking of the locking mechanism 59 is instructed by the lock mechanism 59, and the locking / unlocking of the locking mechanism 59 is not performed unless the predetermined condition is satisfied.

The operation control units 15 and 55 of the electronic key A and the electronic lock device 50 both start the timed operation by the timer after the start signal is input, and the timed operation of the timer after the transmission of the identification data is completed. Ends and shifts to sleep mode again.

In the above example, the electronic key A and the electronic lock device 5 are used.
Since the data transmission direction between 0 and 0 is one-way from the electronic key A to the electronic lock device 50, the confirmation response cannot be returned from the electronic key A to the electronic lock device 50. Therefore, it is desirable to adopt the data in which no error is detected in the electronic lock device 50 by transmitting the modulated signal of the same content from the electronic key A to the electronic lock device 50 a plurality of times.

In the data communication device (electronic key A) of this embodiment, as described above, the case 2a of the timepiece unit 2 is detachably connected so as to overlap the case 1a of the communication unit 1. Here, the case 1a of the communication unit 1 and the case 2a of the timepiece unit 2 are, as shown in FIG. 2, a plurality of couplings protruding from the surface of the case 1a of the communication unit 1 facing the case 2a of the timepiece unit 2. The protrusion 101 and the plurality of coupling concave portions 201 formed on the surface of the case 2a of the timepiece unit 2 facing the case 1a of the communication unit 1 are integrally combined by the concave-convex coupling and are attached to the housing 3. ing. Here, in the case 1a of the communication unit 1, as shown in FIG. 12, a pair of mounting pieces 102 are provided so as to project from the outer peripheral surface, and on the back surface of the housing 3, as shown in FIG. An insertion groove 33 that is inserted from the side is formed, and the communication unit 1
The mounting piece 102 projecting from the case 1a of FIG.
13 (a) so that the mounting piece 102 is engaged with the mounting groove 34 communicating with the insertion groove 33.
It is attached by rotating in the direction of the arrow inside. Therefore, in order to remove the timepiece unit 2 from the communication unit 1, the communication unit 1 is rotated in the direction opposite to the arrow in FIG. 33 to mounting piece 1
02 should be pulled out.

A step portion 202 is formed over the entire circumference on the surface (front surface) of the case 2a of the timepiece unit 2 opposite to the surface facing the case 1a of the communication unit 1.
The communication unit 1 in which the clock unit 2 is coupled to the housing 3
An inner flange portion 32 (see FIG. 2) is formed that abuts the step portion 202 of the timepiece unit 2 in the attached state.

In this embodiment, however, since the case 2a of the timepiece unit 2 is detachably attached to the case 1a of the communication unit 1, the communication unit 1 and the timepiece unit 2 are designed and manufactured separately. Therefore, even if the design specifications of the timepiece unit 2 are increased, by making the communication unit 1 common, the production efficiency can be improved and the manufacturing cost and the management cost can be reduced, so that the cost can be reduced. In addition, since the timepiece unit 2 can be removed as appropriate, when manufacturing a product that does not require the timepiece unit 2, if the communication unit 1 is shared, a product that requires the timepiece unit 2 and a product that does not require the timepiece unit 2 can be provided. Also in the case of producing the, the production efficiency is improved and the costs such as the manufacturing cost and the management cost can be reduced, so that the cost can be reduced. It is also possible to prepare a member that can be replaced with the timepiece unit 2 and replace it with the timepiece unit 2. The connection structure of the communication unit 1 and the timepiece unit 2 is not limited to the structure described above, and any structure may be used as long as the case 1a of the communication unit 1 and the case 2a of the timepiece unit 2 can be attached to and detached from each other.

Further, since the mounting means has the housing 3 for holding the communication unit 1 and the mounting band 4 detachably mounted on the housing 3, only the band 4 is exchanged in the mounting means. When the band 4 is consumed, only the band 4 needs to be replaced, and the choice of materials and design of the band 4 can be expanded.

Further, the communication unit 1 includes each communication electrode 1
Since 1 and 11 are juxtaposed along the width direction of the band 4, the user's fingertip or hand is the other party's communication device (electronic lock device 5).
When the contact electrode 51 of 0) is contacted, a loop-shaped path having a relatively small impedance is formed between the communication unit 1 and the partner communication device. The data communication can be performed stably.

The structure for attaching the communication unit 1 to the housing 3 is not limited to the structure described above, and for example, as shown in FIG.
As shown in FIG. 15, two fitting protrusions 35 are provided on the inner peripheral surface of the housing 3, and a fitting groove 103 into which the fitting protrusion 35 is fitted is provided on the back surface of the communication unit 1 as shown in FIG. You may

(Embodiment 2) The basic configuration of the data communication apparatus of this embodiment is substantially the same as that of Embodiment 1, and as shown in FIGS. 16 to 18, the case 1a of the communication unit 1 is used.
It also serves as the housing 3 described in the first embodiment, and is characterized in that the band 4 is detachably attached to the communication unit 1. Here, the case 2a of the clock unit 2
A step portion 205 is formed at the rear portion and a pair of mounting pieces 206 are provided so as to project laterally. The case 1a of the communication unit 1 has a storage recess 105 for receiving the rear portion of the case 2a of the timepiece unit 2 and the mounting piece. A pair of insertion grooves 106 into which 206 is inserted, and a mounting groove 1 that communicates with each insertion groove 106.
07 are formed. Therefore, to attach the timepiece unit 2 to the communication unit 1, the case 2 of the timepiece unit 2 is inserted so that the attachment piece 206 is inserted into the insertion groove 106.
a The rear part of the communication unit 1 is inserted into the housing recess 105 from the front of the case 1a, and the case 2a of the timepiece unit 2 is rotated in the direction of the arrow in FIG. 16 so that the mounting piece 206 engages with the mounting groove 107. Just do it. Therefore, in order to remove the timepiece unit 2 from the communication unit 1, the timepiece unit 2 is rotated in the direction opposite to the arrow in FIG.
6 may be moved to the position of the insertion groove 106 and the attachment piece 206 may be pulled out from the insertion groove 106. Other configurations and operations are similar to those of the first embodiment.

Therefore, in the present embodiment, the number of parts can be reduced and the assembling work is facilitated as compared with the case where the communication unit 1 and the housing 3 are separate bodies as in the first embodiment.

Further, as in the first embodiment, the timepiece unit 2 can be properly removed from the communication unit 1. Then, for example, when the clock unit 2 is not necessary for adopting the electronic lock device 50 in the electronic key system described in the first embodiment as a locker in a facility such as a fitness club, communication is performed regardless of the presence or absence of the clock unit 2. A protection function member 6 (see FIG. 19) that is common to the unit 1 and is replaceable with the timepiece unit 2 and protects the communication unit 1 is prepared in advance, and the protection function member 6 may be attached to the communication unit 1. Watch unit 2
Even in the case of producing a product that requires the product and a product that does not require the timepiece unit 2, the production efficiency is improved and the cost such as the manufacturing cost and the management cost can be reduced, so that the cost can be reduced. Here, since the protection function member 6 only needs to have a function of protecting the communication unit 1, the entire surface can be designed.

The structure for attaching the case 2a of the timepiece unit 2 to the case 1a of the communication unit 1 is not limited to the above-mentioned structure. For example, as shown in FIG. 20, the case 2a is provided at the rear of the case 2a of the timepiece unit 2. Two engaging grooves 208 formed of a vertical groove 208a formed along the thickness direction of the case and a peripheral groove 208b continuous with the vertical groove 208 and formed along the circumferential direction of the case 2a are formed. An engaging protrusion (not shown) capable of engaging with the circumferential groove 208b of the engaging groove 208 may be provided on the first side.

(Embodiment 3) By the way, Embodiments 1 and 2
In this data communication device, since the power supplies 16 and 23 are built in each of the units 1 and 2, respectively, the weight of the entire device becomes relatively heavy and the cost becomes high.

On the other hand, in the data communication device of this embodiment, as shown in FIG. 21, the power supply for supplying power to the circuit section C1 is provided on the surface of the case 1a of the communication unit 1 facing the case 2a of the timepiece unit 2. A pair of power supply output terminals T1 and T1 connected to a pair of output terminals of 16 are exposed, and power is supplied to the circuit section C2 on the surface of the case 2a of the timepiece unit 2 facing the case 1a of the communication unit 1. Pair of power input terminals T2. T2 is exposed,
The power input terminals T2 and T2 are the case 1 of the communication unit 1.
It is characterized in that it is exposed at a position where it is electrically connected to the power supply output terminals T1, T1 when the case 2a of the timepiece unit 2 is attached to a. The other configurations and operations are the same as those in the first and second embodiments.

Therefore, in the data communication apparatus of this embodiment, the power supply 16 of the communication unit 1 is connected to the power supply output terminals T1 and T1.
Since power can be supplied to the circuit section C2 of the timepiece unit 2 via the power input terminals T2 and T2 of T1 and the timepiece unit 2, it is not necessary to incorporate a power source in the case 2a of the timepiece unit 2, and the low temperature of the timepiece unit 2 can be reduced. The cost and the thickness can be reduced. In addition, as in the first embodiment, the communication unit 1 and the timepiece unit 2 are provided with power supplies 16,
The weight of the entire data communication device can be reduced as compared with the case where 23 is provided.

(Fourth Embodiment) By the way, as described above, in the data communication apparatus of the first and second embodiments, each unit 1, 2 is
Since the power supplies 16 and 23 are built in each, the weight of the entire apparatus becomes relatively heavy and the cost becomes high.

On the other hand, in the data communication apparatus of this embodiment, as shown in FIG. 22, the power supply to the circuit portion C1 is provided on the surface of the case 1a of the communication unit 1 facing the case 2a of the timepiece unit 2. Pair of power input terminals T4
T4 is exposed, and the case 2a of the timepiece unit 2 has the power supply 23 for the circuit section C2 built therein and is connected to the pair of output ends of the power supply 23 on the surface facing the case 1a of the communication unit 1. A pair of power supply output terminals T3 and T3 are exposed, and the power supply output terminals T3 and T3 are connected to the power supply input terminals T4 and T4 when the case 2a of the timepiece unit 2 is attached to the case 1a of the communication unit 1. It is characterized in that it is exposed to the position where it is electrically connected.

In the data communication apparatus of this embodiment, however, the power supply 23 of the timepiece unit 2 is connected to the power supply output terminals T3 and T3.
Since power can be supplied to the circuit section C1 of the communication unit 1 via T3 and the power input terminals T4 and T4 of the communication unit 1, it is not necessary to incorporate a power source in the case 1a of the communication unit 1, and the power consumption of the communication unit 1 can be reduced. The cost and the thickness can be reduced. In addition, as in the first embodiment, the communication unit 1 and the timepiece unit 2 are provided with power supplies 16,
The weight of the entire data communication device can be reduced as compared with the case where 23 is provided. In the data communication device of the present embodiment, when the timepiece unit 2 is unnecessary, the protective function member 6 replaceable with the timepiece unit 2 may be provided, for example, as shown in FIG.
A power source 61 including a button-shaped battery as shown in FIG. 3 is built in, and a power source output terminal 62 connected to an output end of the power source 61 may be exposed on a surface facing the case 1a of the communication unit 1. .

Further, the communication unit 1 and the timepiece unit 2 do not have a built-in power source, but the communication unit 1 is provided with a pair of power supply input terminals for supplying power to the circuit portion C1, and the timepiece unit 2 is connected to the circuit portion C2. A pair of power supply input terminals for power supply is provided, and as shown in FIG. 24, a power supply 71 for supplying power to each circuit portion C1 and C2 is built in the housing 3 and a power supply output connected to the power supply 71. You may make it arrange | position the terminal part 72 in the position electrically connected with each power supply input terminal. If such a configuration is adopted, it is not necessary to incorporate a power source such as a battery in the communication unit 1 and the timepiece unit 2, and the cost can be reduced, and the circuit units C1 and C2 of the communication unit 1 and the timepiece unit 2 can be provided. It becomes possible to replace the power supply regardless. Further, it is possible to reduce the weight of the entire data communication device as compared with the case where the power supply is provided to each of the communication unit 1 and the timepiece unit 2.

[0051]

According to the first aspect of the present invention, the two communication electrodes facing the user and the contact electrode provided on the communication device on the other side are contacted by the user via the respective communication electrodes. A communication unit having a data communication unit for performing data communication with a communication device on the other side using at least a part of the body of the communication unit, and a data storage unit connected to the data communication unit for storing data, A case of a timepiece unit having a timekeeping means for measuring the present time and a display means for displaying the present time measured by the timekeeping means is detachably attached to the case of the communication unit. Since the unit and the unit can be designed and manufactured separately, even if the design specifications of the clock unit are increased, the communication unit is made common and the production efficiency is improved.
Since the manufacturing cost and the management cost can be reduced, the cost can be reduced. Further, since the timepiece unit can be appropriately removed, the communication unit can be shared when manufacturing products that do not require the timepiece unit, and products that require the timepiece unit and products that do not require the timepiece unit are produced. Even in such a case, there is an effect that the production efficiency is improved and the costs such as the manufacturing cost and the management cost can be reduced, so that the cost can be reduced. Moreover, it becomes possible to prepare a member that can be replaced with the timepiece unit and replace it with the timepiece unit.

According to a second aspect of the present invention, in the first aspect of the present invention, since the communication unit is integrated with a mounting means to be mounted on a user's arm, the communication unit should be mounted on the user's arm for use. This has the effect of improving the usability.

According to a third aspect of the present invention, in the second aspect of the present invention, the mounting means has a casing for holding the communication unit and a mounting band detachably attached to the casing. There is an effect that only the band can be exchanged in the mounting means. Therefore, when the band is consumed, only the band needs to be exchanged, and the choice of materials and design of the band can be expanded.

According to a fourth aspect of the present invention, in the third aspect of the invention, the communication unit is mounted on a user's arm because the communication electrodes are arranged in parallel along the width direction of the band. In this case, if the communication electrode located on the fingertip side is used as a signal electrode and the communication electrode located on the shoulder side is used as a ground electrode (electrode having a reference potential), the user's fingertip or hand is the other side communication device. When the contact electrode is contacted, a loop-shaped path having a relatively small impedance is formed between the communication unit and the partner communication device, and therefore data communication with the partner communication device is performed with a relatively small energy. The effect is that it can be performed stably.

According to a fifth aspect of the present invention, in the first to fourth aspects of the invention, the case of the communication unit has a built-in power source for a circuit section including the data communication section and the data storage section, and a power source. Is provided with a power supply output terminal connected to the output end of the clock unit, and the timepiece unit has a power supply input terminal for supplying power to a circuit unit including the timing means and the display means, and the power supply input terminal is the communication terminal. Since the timepiece unit is arranged in a position to be electrically connected to the power supply output terminal of the communication unit when the case of the timepiece unit is attached to the case of the unit, the power supply output terminal and the timepiece are separated from the power supply of the communication unit. Since power can be supplied to the circuit section of the timepiece unit via the power input terminal of the unit, it is not necessary to incorporate a power source in the case of the timepiece unit. It is possible to reduce the cost and thickness of the timepiece unit. Further, there is an effect that the weight of the entire device can be reduced as compared with the case where a power source is provided for each of the communication unit and the timepiece unit.

According to a sixth aspect of the present invention, in the first to fourth aspects of the invention, the case of the communication unit has a power input terminal for supplying power to a circuit section including the data communication section and the data storage section. The case of the timepiece unit is provided with a power supply for a circuit section including the timekeeping means and the display means, and has a power output terminal connected to an output end of the power supply. Since it is arranged at a position electrically connected to the power input terminal of the communication unit when the case of the timepiece unit is attached to the case of the communication unit, the power supply output terminal and the power output terminal of the timepiece unit are Since power can be supplied to the circuit section of the communication unit via the power input terminal of the communication unit, it is necessary to incorporate a power supply in the case of the communication unit. Ku, it is possible to reduce the cost and thickness of the communication unit. Further, there is an effect that the weight of the entire device can be reduced as compared with the case where a power source is provided for each of the communication unit and the timepiece unit.

According to a seventh aspect of the present invention, in the fourth aspect of the invention, the communication unit is provided with a power input terminal for supplying power to a circuit section including the data communication section and the data storage section, and the timepiece unit is provided. A power supply input terminal for supplying power to a circuit section including the time measuring means and the display means is provided, and the housing has a power supply output terminal connected to the power supply for incorporating a power supply for supplying power to each circuit section. Since the power supply output terminal is provided at a position electrically connected to each of the power supply input terminals, it is necessary to incorporate a power supply such as a battery in the case of the communication unit and the case of the timepiece unit. Therefore, there is an effect that the cost can be reduced, and the power source can be exchanged regardless of the circuit units of the communication unit and the timepiece unit. Further, there is an effect that the weight of the entire device can be reduced as compared with the case where a power source is provided for each of the communication unit and the timepiece unit.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view showing a first embodiment.

FIG. 2 is a schematic sectional view of the above.

FIG. 3 is a schematic perspective view of the above.

FIG. 4 is an explanatory view of a main part of the communication unit of the above.

FIG. 5 is an explanatory view of a main part of the communication unit of the above.

FIG. 6 is an explanatory view of a main part of the timepiece unit in the above.

FIG. 7 is an explanatory view of a main part of the timepiece unit in the above.

FIG. 8 is a schematic configuration diagram of a usage example of the above.

FIG. 9 is a block diagram of an electronic key in a usage example of the above.

FIG. 10 is a block diagram of an electronic key device in a usage example of the above.

FIG. 11 is an operation explanatory diagram of the above-described usage example.

FIG. 12 shows a communication unit used in the above, wherein (a) is a schematic front view and (b) is a schematic side view.

13A and 13B show mounting means used in the same as above, wherein FIG. 13A is a schematic front view, FIG. 13B is a schematic side view, and FIG. 13C is a schematic rear view.

FIG. 14 shows another configuration example of the mounting means used in the above,
(A) is a schematic front view, (b) is a schematic side view, and (c) is a schematic rear view.

FIG. 15 shows another configuration example of the communication unit used in the above, (a) is a schematic front view, and (b) is a schematic side view.

FIG. 16 is a schematic exploded perspective view showing a second embodiment.

FIG. 17 is a schematic perspective view of the above.

FIG. 18 shows the same as above, (a) is a schematic front view, (b) is a schematic left side view, (c) is a schematic rear view, and (d) is a schematic sectional view.

FIG. 19 is a schematic front view of an example in which a protection function member that can be replaced with the above watch unit is replaced.

FIG. 20 is a schematic perspective view of another configuration example of the timepiece unit used in the above.

FIG. 21 is a block diagram showing a third embodiment.

FIG. 22 is a block diagram showing a fourth embodiment.

23A and 23B show a protective function member that is replaceable with the same timepiece unit, wherein FIG. 23A is a schematic front view and FIG.

FIG. 24 is a schematic front view and FIG. 24B is a schematic side view showing another configuration example of the above.

[Explanation of symbols]

1 communication unit 1a case 2 clock unit 2a case 3 housing 4 bands

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masaru Hashimoto             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Takeyuki Suzuki             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Yoshiko Tsuji             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F term (reference) 2E250 AA02 AA03 BB09 BB21 BB36                       BB65 CC11 CC20 DD06 FF42                       FF53                 2F002 AA01 AA02 AB02 AB05 AB06                       AC01 AE00 BB02 GA06

Claims (7)

[Claims] 1. Two communication electrodes facing a user, and at least a part of the user's body through each communication electrode when the user contacts a contact electrode provided on a partner communication device. A timekeeping means for counting the current time, including a communication unit having a data communication unit for communicating data with a communication device on the other side using a transmission path, and a data storage unit connected to the data communication unit for storing data A data communication device, wherein a case of a timepiece unit having a display means for displaying the current time measured by the timekeeping means is detachably attached to the case of the communication unit. 2. The data communication device according to claim 1, wherein the communication unit is integrated with a mounting means to be mounted on a user's arm. 3. The data communication device according to claim 2, wherein the mounting means has a housing for holding the communication unit and a mounting band detachably attached to the housing. . 4. The data communication device according to claim 3, wherein in the communication unit, the communication electrodes are arranged in parallel along the width direction of the band. 5. The case of the communication unit has a built-in power supply for a circuit section including the data communication section and the data storage section, and a power supply output terminal connected to an output end of the power supply. The unit has a power supply input terminal for supplying power to a circuit section including the time measuring means and the display means, and the power supply input terminal is the above-mentioned when the case of the timepiece unit is attached to the case of the communication unit. The data communication device according to any one of claims 1 to 4, wherein the data communication device is provided at a position electrically connected to a power output terminal of the communication unit. 6. The case of the communication unit is provided with a power input terminal for supplying power to a circuit section including the data communication section and the data storage section, and the case of the timepiece unit includes the timekeeping means and the display. When the power supply of the circuit unit including the means is built in, and the power supply output terminal is connected to the output end of the power supply, and the power supply output terminal attaches the case of the timepiece unit to the case of the communication unit. The power supply input terminal of the communication unit is disposed at a position electrically connected to the communication unit.
The data communication device according to claim 4. 7. The communication unit is provided with a power supply input terminal for supplying power to a circuit unit including the data communication unit and the data storage unit, and the clock unit is connected to a circuit unit including the time measuring unit and the display unit. A power source input terminal for power feeding, the housing has a power source output terminal connected to a power source, which has a power source for power feeding to each of the circuit units, and the power source output terminal is the power source output terminal. The data communication device according to claim 4, wherein the data communication device is arranged at a position electrically connected to the input terminal.