JPH03197196A - Bracelet-shaped non-contact recording medium - Google Patents

Abstract

PURPOSE:To obtain the title recording medium extremely enhanced in portability by providing a power coil and a communication coil to a belt part and providing a memory, a communication control means and a power supply means to the main body part of a bracelet-shaped case. CONSTITUTION:A display part 12 is provided to the upper surface of a main body 1 having a control circuit 3 incorporated therein. Sheet like coils 4a, 4b respectively composed of flexible printed wiring boards are embedded in the belts 2a, 2b respectively mounted to the main body 1 to be connected to the control circuit 3 in the main body 1. The CPU 6 of a control part executes the program preliminarily written in an ROM 7 to control the whole of the control part and a memory 8 is composed of a writable non-volatile memory or a programmable ROM. A power supply part 9 receives the energy supplied from an external part in a non-contact state through the coils 4 to supply power supply voltage to the respective parts of the control part and a transmitting circuit 10 and a receiving circuit 11 perform the data communication with the external apparatus through the coils in a non-contact state.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a bracelet-type contact recording medium that is worn directly on the hand and performs contact data communication with an external device.

(b) Conventional Technology ID cards with personal identification data recorded thereon, commuter passes recorded with expiration dates, and the like have been used as devices for automatically managing entrance/exit and passage. For example, in the case of a device that manages entry and exit to a room, an ID card league provided at the entrance and exit door unlocks the entrance and exit door only when an ID card on which a pre-authorized ID code is recorded is read.

Furthermore, in recent years, so-called prepaid cards (prepaid cards) have been widely used. A prepaid card is a magnetic card on which the remaining usable power is written, and the device that accepts and processes this prepaid card updates the data with the value obtained by subtracting the used power from the remaining power as the new remaining power. Means are provided.

In this way, magnetic cards are generally used as recording media in devices that automatically manage the use of specific facilities and specific devices.

(C) Problems to be Solved by the Invention However, with devices in which the ID code and remaining power are written by magnetic recording, it is difficult to use them with force, -
There was a problem in that it took time and effort to attach the card to the card reader/writer. For example, when using it for ski lift management at a ski resort, the user usually wears gloves and has a ski cart, so he uses the lift game to take out car 1.
Attaching and removing the card reader/like is an extremely time-consuming operation.

2. Ability to perform contactless data communication with devices. If it is a λ medium, the above problem will be solved, but
Just by approaching the device you are using, you can establish a J1 connection with that device.
To perform data communication through contact, a relatively large amount of power is required, and the recording medium itself becomes large.

In addition, since a battery must be installed within the recording medium to cover the power required for data communication, not only is it difficult to downsize, but it is also difficult to manage battery replacement and its operation.
ζ must be present.

The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide an extremely portable bracelet-type non-contact recording medium that only needs to be worn directly on the body and brought close to the device to be used. It is something.

(Means for Solving the d1 Problems) In order to achieve such an object, the present invention provides a power coil that receives power from an external device by close electromagnetic field coupling, and a power coil that transmits and/or receives data. A communication coil is provided on the belt portion of the press-slot throat type case, and a memory for storing data and a memory for storing data received from the communication coil and/or transmitting data to the communication coil (a data) are provided. communication control means for generating;
A power supply means for supplying the electromotive force generated by the power coil to each part as a power source was provided in the main body of the bracelet-type case.

(8) Effects According to the bracelet-type non-contact recording medium of the present invention, the memory stores predetermined data in a Mabl manner, and the communication control means controls the storage of data received from the communication coil and/or
Alternatively, it generates fε data to be sent to the communication coil. Further, the power supply means uses the electromotive force generated by the power coil as a power source to supply power to each part. The memory, communication control means, and power supply means are provided in the main body of the bracelet-shaped case, and further include a power coil that receives power through close electromagnetic field coupling with an external device, and data transmission and/or reception. A communication coil is provided on the belt portion of the bracelet-type case, thus forming a bracelet-type non-contact recording medium as a whole. Since the whole body is bracelet-shaped, the hand C1
By using it while attached to the camera, it can be easily brought close to external devices. Moreover, since the communication coil is installed in the belt, the area of the communication coil can be increased even though the overall size is small, and reliable data can be exchanged with external devices even in the presence of a weak nearby electromagnetic field. Communication becomes possible. Furthermore, since the power receiving coil is provided in the belt portion, sufficient power can be received in a non-contact manner using the wide-area power coil, without the need for a built-in battery as a power source.

(fl Example) The appearance and internal structure of a bracelet-type non-contact recording medium which is an example of the present invention are shown in FIGS. 1 and 2.

In FIG. 1, reference numeral 1 denotes a main body in which a control circuit is incorporated, a display section 12 is provided on its top surface, and input sections such as push button switches 13a and i35 are provided on its side surfaces. Reference numbers 7a' 2a and 2b are belts respectively attached to the main body l, and coils 4a and 4b are provided inside the belts, respectively.

In FIG. 2, reference numeral 5 indicates a resin case (case main body portion) of the main body l. A control circuit 3 consisting of several electronic components mounted on a circuit board is built into the resin case 5. Further, a display section 12 consisting of a liquid crystal display panel or the like is incorporated in the upper part of the resin case 5. Further, sheet-shaped coils 4a and 4b made of flexible wiring boards are embedded in the belts 2a and 2b, respectively, and are connected to the control circuit 3 in the main body.

Next, a schematic diagram of the control section and a circuit diagram of the main parts are shown in FIGS. 3 and 11.

FIG. 3 is a schematic diagram of the control unit. In the figure, reference numeral 6 indicates a program stored in the ROM 7 in advance.

L! CP which executes graph 1 and supervises the entire control section.
(J8 is a memory consisting of a non-volatile 1ψI memory or a programmable ROM that can be written in 3 times.The above-mentioned I/month 1? memory can also be used when the power is cut off)! -Keep the evening 1
, 1 type of memory, or C-Mo5 type memory backed up by a battery for a long time can be used. In addition, as a programmer sol ROM, it is a programmer full ROM (Fi
, E I) ROM) can be used. The power supply section 9 receives energy non-contactly supplied from the outside via the coil coil 4 and supplies a power supply voltage to each section of the control section. Further, a secondary battery and a circuit for charging it may be provided as necessary.

The transmitting circuit 10 and the receiving circuit 11 perform contactless data communication with an external device via the coil 4. Also,
The CPU 6 outputs predetermined display data to the display section 12 and reads the operation of the input section 13 consisting of push buttons and switches.

FIG. 4 is a circuit diagram of the control section of the bracelet type non-contact recording medium. , 20 is an l-chip microprocessor which includes the C II U 6 shown in FIG. 3, an R0M 7 and optionally a memory 8. Further, in FIG. 4, reference numerals 4a and 4b are sheet-shaped coils provided in the belt section, and the voltage induced in these coils 4a and 4b is detected by diodes DI and D2 and claw resistor R1, and the data of the microprocessor 20 is detected. given to the terminal. Further, this detection signal No. 13 is charged into a capacitor C1 through a diode D3, and is made into a constant voltage by a grinding resistor R2 and a Zener diode ZD, and is provided as a power supply VDD to the microprocessor 20. In addition, in the figure, VD is the capacitor C1
The charging voltage is detected, and when the voltage is less than a certain voltage, a reset signal is given to the microprocessor 20, and when the voltage is higher than the certain voltage, the setting is released.

Next, FIG. 5 shows a detailed diagram of the control circuit provided in the I/1 section device.

As shown in Figure 5, the oscillation circuit +7331 is always, for example, IMI.
A modulation circuit 32 modulates the amplitude of the oscillation output by microprocessor circuit 31 and supplies power to coil 33. The coil 33 generates an electromagnetic field based on this signal. - On the other hand, the change extraction circuit 34 is the coil 33
The data demodulation circuit 35 detects a change in the voltage or current signal level induced in the
\give.

When receiving a signal from a bracelet-type non-contact recording medium, the modulation circuit 32 always sends a signal to the coil 33 such as IM.
Provides a continuous signal of II z. The bracelet-type non-contact recording medium shown in FIG. 4 changes the input impedance of the data terminal of the microprocessor 20 so that the coil 33 of the external device and the coils 4a, 4b of the non-contact recording medium can be connected to each other. change the coupling coefficient of Therefore, the variation extraction circuit 34 and data demodulation circuit 35 shown in FIG. 5 turn on/off the data terminal of the microprocessor 20 in the bracelet type non-contact recording medium.
It can be detected and demodulated as a change in the supply voltage or current to the coil 33.

Next, other embodiments with different coil configurations are shown in FIGS. 6 and 7.

6 and 7 show the external appearance and internal structure of a bracelet-type non-contact recording medium. In both figures, the reference numeral l denotes the main body with a built-in control circuit, and 2 indicates the spring-type structure attached to the main body 1. Bell I. This belt 2
A loop-shaped coil 4 is built inside.

In the embodiment, data can be received from an external device and a writable memory is used, but for example, data can be fixed in a ROM in advance, and the data can be sent only when needed or all the time. The present invention can also be applied to devices having the following functions.

Further, in the embodiment, the power coil and the communication coil are used as both, but the coil may be used as an independent coil having an optimal structure for each.

(Effects of the Invention According to this invention, a bracelet-type non-contact recording medium can be transferred between the two by simply passing an external device that writes data to or reads data from the recording medium.) This eliminates the hassle of reading or writing recorded contents, and since it is bracelet-shaped and used on the wrist, it is easy to connect to external devices. Moreover, since the coil is installed in the root section, the coil area is wide enough to ensure reliable data communication with external devices using weak radio waves. and power transfer is possible.

[Brief explanation of drawings]

FIGS. 1 and 2 are diagrams showing the external appearance and internal structure of a bracelet-type non-contact recording medium according to an embodiment of the present invention. FIGS. 3 and 4 are a block diagram of the control section and a circuit diagram of the main parts of the bracelet-type non-contact recording medium. FIG. 5 is a block diagram of the main parts provided in the external device. FIG. 6 and FIG. 7 are diagrams showing the external appearance and internal structure of a bracelet-type non-contact recording medium according to another embodiment. 1-main body, 2.2a, 2b-belt, 3-control circuit, 4.4a, 4b-coil, 5-resin case (case main part).

Claims (1)

[Claims] (1) A power coil that receives power from an external device through close electromagnetic field coupling and a communication coil that sends and/or receives data are installed on the belt part of the bracelet-shaped case, and the data is stored. a memory for storing data received from the communication coil and/or generating data to be transmitted to the communication coil; and a power source for supplying each part with the electromotive force generated by the power coil as a power source. A bracelet-type non-contact recording medium characterized in that a supply means is provided in a main body of a bracelet-type case.