JPH0935028A - Noncontact information recording medium with auxiliary power source - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noncontact information recording medium which can operate for attached functions for data processing, display, etc., even when a communication with a terminal device is not made. SOLUTION: This noncontact information recording medium is provided with at least, an antenna coil 120 which sends and receives signals to and from the terminal device 180, a main power source part 160 which generates electric power to be supplied to respective circuits according to the signals received by the antenna coil 120, an interface part 130 which demodulates received data from the antenna coil 120 and modulates sent data to the antenna coil 120, a memory part 150, and control part 140 which controls the operation of the interface 130, memory part 150, etc., and is equipped with an auxiliary power source 110 which performs data processing by enabling the control part 140 and memory part 150 to operate unless a communication with the terminal device 180 is made in addition to the main power source part 160 which is supplied with the electric power from the terminal device 180 when communicating with the terminal device 180.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contactless information recording medium which is contactlessly supplied with power when communicating with a terminal device, and more particularly to a contactless IC card.

[0002]

2. Description of the Related Art Conventionally, a contactless IC card, which is a contactless information recording medium to which power is supplied from a terminal device in a contactless manner, has a functional configuration as shown in FIG. One or a plurality of antenna coils (320A, 320B) for receiving power supply, an interface section 330 for modulating / demodulating transmitted / received data, and a power supply section 360 for generating electric power from the transmitted electromagnetic wave and supplying the electric power to other circuits. The control unit 34 includes a control unit 340 that controls the above circuits, and the control unit 34 is controlled by a power supply unit 360 that receives electric power in a contactless manner only during communication with the terminal device 380.
0, the memory unit 350 is operable and data processing is performed. Even when the non-contact IC card has an accessory function such as a display, the power supply unit 360 enables the accessory function such as a display only during communication with the terminal device. The antenna coil 320A is used for transmitting and receiving data, and the antenna coil 3
20B is for power supply, and one antenna coil may share both. A display unit 370 for displaying data is composed of an LCD panel or the like. Such a conventional non-contact IC card does not have a power supply unit for power supply in addition to the power supply unit 360 which receives electric power from the terminal device 380 in a non-contact manner. Therefore, when not communicating with the terminal device, The internal circuits such as the control unit 340 and the memory unit 350 cannot be operated, and as a result, data processing cannot be performed, which is a problem. And a non-contact IC with attached functions such as display
In the case of a card, the terminal device 380 also has ancillary functions such as display.
It was a problem because it could not work except when communicating with. For example, when you try to use a contactless information recording medium that is contactlessly supplied with power from a terminal device for a commuter pass or prepaid card, etc. There is an inconvenience that you cannot do it. Further, in the above-mentioned conventional non-contact information recording medium to which power is supplied from the terminal device in a non-contact manner, a failure occurs in the power supply unit (circuit) 360 during communication with the terminal device and the power supply is abruptly supplied. If you stop
Since data cannot be backed up and recovery processing cannot be performed, there was a problem in terms of data safety and reliability.

[0003]

As described above, in the conventional non-contact information recording medium to which power is supplied from the terminal device in a non-contact manner, data processing and display are performed at times other than communication with the terminal device. If the auxiliary functions such as the above cannot be operated and the supply of power is suddenly stopped, a problem also occurs in terms of data safety (reliability), and it has been required to respond. Under such circumstances, the present invention aims to provide a non-contact information recording medium capable of operating auxiliary functions such as data processing and display even when not communicating with a terminal device. .

[0004]

A contactless information recording medium with an auxiliary power supply according to the present invention is for supplying at least an antenna coil for transmitting and receiving a signal from a terminal device to each circuit based on a signal received by the antenna coil. A main power supply unit that creates a power supply, an interface unit that demodulates reception data from the antenna coil and modulation of transmission data to the antenna coil, a memory unit, and a control unit that controls operations of the interface unit, the memory unit, and the like. A non-contact information recording medium that receives power from the terminal device in a contactless manner during communication with the terminal device, and that receives power in a contactless manner during communication with the terminal device. In addition, the control unit and the memory unit can be operated when not communicating with the terminal device, and an auxiliary power source for data processing is provided. Further, in the above, it is characterized in that it has an auxiliary function such as a display, and the auxiliary function such as a display is operated by an auxiliary power source except during communication with the terminal device. The auxiliary power source in the above is a solar cell.

[0005]

The non-contact information recording medium with an auxiliary power source of the present invention is
With the above configuration, the internal circuits such as the control unit and the memory unit can be operated and the data processing can be performed even when the communication with the terminal device is not performed. And
Even when the auxiliary function such as the display is provided, the auxiliary function such as the display can operate the auxiliary function such as the display at the time other than the communication with the terminal device. Specifically, the control unit and the memory unit can be operated even when not communicating with the terminal device, and the auxiliary power supply for performing data processing is provided, so that the data processing and the data processing can be performed even when not communicating with the terminal device. It is also possible to operate auxiliary functions such as display. Further, by using a solar cell as an auxiliary power source, the thickness of the auxiliary power source can be reduced, and the limitation of the usage period can be eliminated. As a result, a thin, long-life non-contact information recording medium is provided. Is possible.

[0006]

EXAMPLE An example of a non-contact information recording medium with an auxiliary power source of the present invention will be described with reference to the drawings. First, the first embodiment will be described with reference to FIGS. FIG. 1 is a functional block diagram of this embodiment, and FIG. 2 is a schematic plan view of a non-contact information recording medium with an auxiliary power supply of this embodiment. In FIGS. 1 and 2, 100 is a contactless information recording medium with an auxiliary power supply, 110 is an auxiliary power supply, 120 is an antenna coil, 130 interface, 140 is a control unit (CP).
U), 150 is a memory unit, 160 is a main power supply unit, 170 is a display unit, and 180 (communication) terminal device. The antenna coil 120 includes the interface 130 and the main power supply unit 16.
0 from the terminal device 180 to the interface 1
An electromagnetic wave for signal communication to 30 and power supply is received and transmitted from the interface 130 to the terminal 180. Although one antenna coil is used here, a plurality of antenna coils may be provided. For example, in the conventional non-contact information recording medium 300 shown in FIG. 3, two antenna coils 320A and 320B are provided, and 320A is connected to an interface 330 that performs signal demodulation and modulation processing.
0B is a power supply unit 3 that smoothes and rectifies a signal to create a power supply for supply.
Although it is connected to 60, this may be done. The interface 130 is connected to the control unit (CPU) 140 and the antenna coil 120, and controls the control unit (CP).
U) 140 is a communication interface circuit that performs communication between the communication terminal device 180 on the base unit side and the antenna coil 120. The control unit (CPU) 140, based on the command data transmitted from the communication terminal device 180 on the base unit side through the antenna coil 120 and the interface 130, read / write of the memory, display of the display unit 170,
Performs processing such as output of reply data. Memory unit 150
Is a non-volatile memory composed of an EEPROM, and reads / writes stored data under the control of a control unit (CPU). The display unit 170 includes an LCD panel and is controlled by the control unit (CPU) to display data. The main power supply unit 160 supplies power to each circuit based on the electromagnetic waves received by the antenna coil 120 during communication with the communication terminal device 180. The auxiliary power source 110 includes a solar cell, and is used when the main power source unit 160 does not supply power, except for the control unit (CPU) 140 and the memory (EEP).
Power is supplied to the ROM) 150 and the display unit (LCD panel) 170.

FIG. 2 shows an example of a schematic plan view of a non-contact information recording medium with an auxiliary power source according to this embodiment, and this arrangement is not particularly limited.

Further, the operation of the non-contact information recording medium with the auxiliary power supply of this embodiment will be described. When the contactless information recording medium 100 with an auxiliary power source is brought close to the communication terminal device 180 on the master side, the electromagnetic waves emitted from the terminal device 180 side are received by the antenna coil 120, and the current generated in the coil is supplied to the main power source section. It is rectified and smoothed by 160 and used as a power supply for supplying to each circuit. With the power supply for supply created by the main power supply section 160,
Circuits such as the interface 130 and the control unit (CPU) 140 operate to perform modulation / demodulation of transmission / reception signals, data processing, memory read / write, display of the display unit (LCD panel) 170, and the like. The transmission of the command code (command) from the terminal device 180 to the contactless information recording medium 100 is performed by demodulating the data through the interface through the antenna coil and processing the data. The response to the device 180 is performed by modulating the response code with the interface and transmitting it to the terminal device 180 side through the antenna coil. The non-contact information recording medium 100 with an auxiliary power source is used in the terminal device 18
The main power supply 16
The power supply from 0 is stopped. When the power supply from the main power supply is stopped, the control unit (CPU) 140, the memory (EEP) from the solar battery which is the auxiliary power supply 110.
Power can be supplied to the ROM) 150 and the display unit (LCD panel) 170, and data processing and memory reading / reading can be performed.
It is possible to display the lights and the display unit (LCD panel) 170. The power supply from the main power supply unit 160 can be stopped and the auxiliary power supply 110 can be operated continuously, or the auxiliary power supply 110 can be operated as needed during the stop of the power supply from the main power supply unit 160. It is also possible to deal with power supply stoppage due to occurrence, etc., and it is also possible to confirm the storage of status other than during communication with the terminal device 180. For example, when the contactless information recording medium 100 with an auxiliary power source is used as a commuter pass or prepaid card, data such as the period of use of the commuter pass, the used section, and the remaining amount of the prepaid card is not only passed through the gate (terminal device). It will be possible to display and confirm. In addition, when a failure occurs in the main power supply unit (circuit) 160 during communication with the terminal device and the supply of power is suddenly stopped, the auxiliary power supply 110 supplies power to each circuit, and Backup can be performed and recovery processing can be performed. As a result, the safety and reliability of the stored data will be improved.

[0009]

As described above, according to the present invention, by providing the auxiliary power source as described above, when the communication is not performed with the terminal device,
It is possible to provide a non-contact information recording medium capable of data processing even when the power supply from the main power supply is suddenly interrupted. Further, in the case of the non-contact information recording medium having an accessory function such as a display unit, the accessory function such as data display can be operated other than during communication with the terminal. If the power supply from the main power supply is interrupted during communication with the terminal device or if any abnormality occurs after the end of communication, the abnormal status can be saved and the data can be backed up. Moreover, the reliability of the stored data is improved.

[Brief description of drawings]

FIG. 1 is a functional schematic configuration diagram of a non-contact information recording medium according to a first embodiment.

FIG. 2 is a schematic plan view of a non-contact information recording medium of Example 1.

FIG. 3 is a functional schematic configuration diagram of a conventional non-contact information recording medium.

[Explanation of symbols]

100, 300 Non-contact information recording medium with auxiliary power supply 110 Auxiliary power supply 120, 320A, 320B Antenna coil 130, 330 Interface 140, 340 Control unit (CPU) 150, 350 Memory unit 160, 360 Main power supply unit 170, 370 Display unit 180 380 (communication) terminal device

Claims (3)

[Claims] 1. At least an antenna coil for transmitting and receiving a signal from a terminal device, a main power supply unit for generating a power supply for each circuit based on a signal received by the antenna coil, and demodulation of data received from the antenna coil. , Has an interface unit that modulates the transmission data to the antenna coil, a memory unit, and a control unit that controls the operation of the interface unit, the memory unit, etc., and does not contact the terminal device when communicating with the terminal device. A non-contact information recording medium that is supplied with power by a main power supply unit that receives power in a non-contact manner during communication with the terminal device, and a control unit and a memory when not communicating with the terminal device. A non-contact information recording medium with an auxiliary power source, which is equipped with an auxiliary power source for enabling data processing and data processing. 2. The auxiliary power supply according to claim 1, wherein the auxiliary power supply has an auxiliary function such as a display, and the auxiliary function such as a display is operated by an auxiliary power supply except when communicating with the terminal device. Contactless information recording medium. 3. A non-contact information recording medium with an auxiliary power supply, wherein the auxiliary power supply according to claim 1 is a solar cell.