JPH10261053A - Radio card adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily increase the communication distance of a no-battery type radio card and to provide a radio card adapter, which is conveniently carried. SOLUTION: One surface of the adapter main body 301 is a contact fixation part 302 for a radio card 200, which is fixed to this contact fixation part 302 in contact with it and held by a holding part 303. A battery 306 is stored in a battery storage part 305 provided at an end part of an adapter main body 301. The contact fixation part 302 is provided with a power transmission terminal 308 which is connected to a power reception terminal 203 provided to the radio card 200 when the radio card 200 is held, and the electric power of the battery 306 is transmitted to the radio card 200 through those terminals 308 and 203.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a wireless communication function for wirelessly transmitting / receiving a wireless card reader / writer as a communication device, and converting radio waves from the wireless card reader / writer into electric power. The present invention also relates to a wireless card adapter for extending the communication distance of a battery-less wireless card having a power generation function for generating power used in the wireless card.

[0002]

2. Description of the Related Art In a wireless card system, a wireless card reader / writer and a wireless card perform wireless data communication, and are used in security systems and automatic ticket gate systems. The power required for the operation of the internal circuit (IC chip) of the wireless card is obtained by supplying a battery with a built-in battery or by rectifying and smoothing radio waves from a wireless card reader / writer. There are battery-less ways to supply it. In recent years, batteryless wireless cards that do not require disposal or replacement of batteries due to battery life are becoming mainstream.

[0003]

However, the battery-less wireless card obtains its operating power from the radio wave transmitted from the wireless card reader / writer as described above. The received electric field strength is reduced, the received power necessary for the normal operation of the IC chip in the wireless card cannot be obtained, the received signal is small, normal data processing cannot be performed, and the processed data is transferred to a wireless card reader / writer. In the worst case, communication becomes impossible.

Therefore, a method of increasing the radiated electric field intensity of the wireless card reader / writer has been considered. The amount of attenuation of the radiated electric field intensity of the wireless card reader / writer is determined by the used frequency f of the transmission radio wave and the distance r. For example, when a carrier wave in the medium wave band is used, the reception level is proportional to 1 / r ³ within a normal communication distance of 1 m. Here, when the distance r is twice, to receive the same reception level, the wireless card reader / writer needs to transmit 2 ³ = 8 times the electric field strength.

[0005] In general, many remote-type wireless card systems output to the limit of the Radio Law in order to extend the communication distance, and it is difficult to increase the radiated electric field strength due to the influence of surrounding devices and regulations. Many. Therefore, an object of the present invention is to provide a wireless card adapter that can easily extend the communication distance of a battery-less wireless card and is convenient to carry.

[0006]

SUMMARY OF THE INVENTION A wireless card adapter according to the present invention has an antenna, a wireless communication function of wirelessly transmitting and receiving to and from an external communication device via the antenna, and Holding means for detachably holding a wireless card having a power generation function of converting radio waves into electric power and generating a power supply used in the wireless card, a battery, and the power held by the holding means. A power transmission unit for transmitting data to the wireless card, a holding unit, a battery, and a portable adapter body equipped with the power transmission unit are provided.

Further, the wireless card adapter of the present invention has an antenna, a wireless communication function of wirelessly transmitting and receiving to and from an external communication device via the antenna, and a radio wave from the communication device for power. Holding means for detachably holding a wireless card having a power generation function for converting and generating power used in the wireless card; a receiving antenna for receiving a radio wave transmitted from the communication device; Amplifying means for amplifying the amplified radio wave, a transmitting antenna for transmitting the radio wave amplified by the amplifying means to the wireless card held by the holding means, and supplying operating power to the amplifying means The battery includes a battery, a holding unit, a receiving antenna, an amplifying unit, a transmitting antenna, and a portable adapter body on which the battery is mounted.

Further, the wireless card adapter of the present invention has an antenna, a wireless communication function of wirelessly transmitting and receiving to and from an external communication device via the antenna, and a radio wave from the communication device for power. Holding means for detachably holding a wireless card having a power generation function for converting and generating power used in the wireless card; and receiving radio waves transmitted from an antenna of the wireless card held by the holding means. A receiving antenna, amplifying means for amplifying radio waves received by the receiving antenna, a transmitting antenna for transmitting the radio waves amplified by the amplifying means to the communication device, and operating power for the amplifying means. It comprises a battery to be supplied, a holding unit, a receiving antenna, an amplifying unit, a transmitting antenna, and a portable adapter body on which the battery is mounted. .

Further, the wireless card adapter according to the present invention comprises:
A wireless communication function having an antenna for wirelessly transmitting and receiving to and from an external communication device via the antenna, and generating a power supply used in the wireless card by converting radio waves from the communication device into electric power Holding means for detachably holding a wireless card having a power generation function, and receiving radio waves transmitted from an antenna of the wireless card held by the holding means or receiving radio waves transmitted from the communication device. An antenna, amplifying means for amplifying radio waves received by the receiving antenna, and a transmitting antenna for transmitting the radio waves amplified by the amplifying means to the communication device, or to the wireless card held by the holding means; ,
A battery that supplies operating power to the amplifying unit;
A portable adapter body equipped with these holding means, a receiving antenna, an amplifying means, a transmitting antenna, and a battery is provided.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment will be described. In the first embodiment, the communication distance of the wireless card is extended by fixing the batteryless wireless card to a wireless card adapter with a built-in battery, and supplying power of the battery of the wireless card adapter to the wireless card. This will be described in detail below.

FIG. 1 schematically shows an external configuration of a wireless card system according to a first embodiment. FIG.
In the figure, 100 is a wireless card reader / writer as a communication device, 200 is a batteryless wireless card, and 300 is a wireless card adapter according to the present invention.

The wireless card reader / writer 100 includes, for example, a main unit 101 and an antenna unit 102. The antenna unit 102 includes a transmitting antenna 103 for transmitting a radio wave to the wireless card 200, and a wireless card 20.
A receiving antenna 104 for receiving radio waves from 0 is provided.

The wireless card 200 is a wireless card reader.
Antenna 2 for transmitting and receiving to and from writer 100
01, an IC chip 202 in which various circuits described below are integrated into an IC (integrated circuit).

On one surface of the wireless card 200, there is provided a power receiving terminal 203 for connecting (contacting) with the power transmission terminal 308 of the wireless card adapter 300 when the wireless card 200 is held by the wireless card adapter 300.

The wireless card adapter 300 is configured as follows. That is, one surface of the adapter main body 301 formed in a card shape corresponding to the wireless card 200 is the close contact fixing portion 302 of the wireless card 200. As shown in FIG. 2, the wireless card 200 is placed on the contact fixing portion 302, moved in the direction of the arrow in the drawing, and one end of the wireless card 200 is inserted into the holding portion 303 provided at the end of the adapter body 301. By doing so, the holding unit 303
The one end of the wireless card 200 is sandwiched and held by a holding piece 304 formed of a spring member provided in the wireless card 200.

An end of the adapter body 301 has a holding portion 3
A battery storage unit 305 is formed integrally with the battery pack 03, and a battery 306 as a power supply is stored in the battery storage unit 305. A power transmission circuit 307 formed as an IC chip is built in the adapter body 301.

A power transmission terminal 308 connected (contacted) to the power receiving terminal 203 of the wireless card 200 when the wireless card 200 is held in the close contact fixing portion 302 of the adapter body 301.
Is provided.

The holding portion 303 of the adapter body 301
As shown in FIG. 2, when one end of the wireless card 200 is inserted, a power switch (for example, a push switch) 30 that is pressed at the end of the wireless card 200 to turn on.
9 are provided. The power switch 309 is normally off when the wireless card 200 is not inserted. That is, the power switch 309 is turned on / off in conjunction with the attachment / detachment of the wireless card 200 to / from the holding unit 303, thereby turning on / off the power from the battery 306.

In such a configuration, a radio wave transmitted from the wireless card reader / writer 100 is transmitted from the transmitting antenna 103 and received by the antenna 201 of the wireless card 200. Using the received radio waves, the IC chip 202 of the wireless card 200 extracts communication data, generates power for operation, and the like.

At this time, the received power is supplied as auxiliary power from a wireless card adapter 300 with a built-in battery holding the wireless card 200. That is, the power of the battery 306 in the wireless card adapter 300 is
08 and the power receiving terminal 203 of the wireless card 200
And the wireless card 200 receives power. Thereby, the communication distance can be extended in a distance where communication is impossible due to insufficient power.

The wireless card 200 can communicate with the wireless card reader / writer 100 as a wireless card even when it is not held by the wireless card adapter 300.

FIG. 3 is a block diagram showing a wireless card system using the wireless card adapter 300 with a power transmission terminal shown in FIG. This wireless card system is roughly divided into a wireless card reader / writer 100, a wireless card 200, a wireless card adapter 300 for increasing the communication distance, a system control device (for example, a railway ticket gate) 400, a system control It comprises a host computer 500 that controls the device 400.

The wireless card reader / writer 100 includes an interface circuit (I / F) 105 for connecting to the host computer 500, a data processing circuit 106 for performing various data processing, a transmission circuit 107, a reception circuit 108, a transmission antenna 103, And a receiving antenna 104.

The wireless card 200 includes an antenna 201, a power receiving terminal 203, a rectifying / smoothing circuit 204 for rectifying and smoothing a received power wave, a power supply circuit 205 for generating power (power) used in the card, and a received radio wave. Clock extraction circuit 206 for extracting clock pulses, reception circuit 20
7, a transmission circuit 208, a data processing circuit 209 for performing various data processing, and a memory 210 used for storing various data.

The wireless card adapter 300 is connected to the battery 30
6, a power transmission circuit 307, a power transmission terminal 308, and a power switch 309. Next, the respective operations when the wireless card adapter 300 is not used and when it is used will be described.

First, a case where the wireless card adapter 300 is not used will be described. The wireless card reader / writer 100 receives a command from the host computer 500 through the interface circuit 105,
In step 6, the command is determined. In accordance with the result of the determination, the transmission circuit 107 arbitrarily modulates and amplifies the read command, the write command, and the write data for transmission to the wireless card 200, and radiates it as a radio wave from the transmission antenna 103.

Radio waves radiated from transmitting antenna 103 are received by antenna 201 of wireless card 200.
The received radio waves are rectified and smoothed by the rectification / smoothing circuit 204 and sent to the power supply circuit 205. The power supply circuit 205 generates electric power from the output of the rectification / smoothing circuit 204,
The necessary power is sent to each part of the wireless card 200.

The radio wave received by the antenna 201 is sent to a clock extraction circuit 206, and a clock pulse used for demodulation and modulation is extracted. In addition, antenna 2
The radio wave received at 01 is sent to the receiving circuit 207.
The receiving circuit 207 amplifies the received signal and then demodulates it.
The data is converted into digital data and the demodulated data is sent to the data processing circuit 209. Data processing circuit 209
Analyzes commands and data from demodulated data.

When the command is data reading, the data processing circuit 209 reads data from the memory 210 and sends the data to the transmission circuit 208. When the command is data write, the received write data is written to a predetermined address of the memory 210. When transmitting data, the transmission circuit 208 arbitrarily modulates the data transmitted from the data processing circuit 209, amplifies the power, and transmits the data from the antenna 201 to the wireless card reader / writer 100.

The radio wave transmitted from the wireless card 200 is
Receiving antenna 104 of wireless card reader / writer 100
The modulated signal is amplified by the receiving circuit 108 and demodulated. The demodulated data is confirmed by the data processing circuit 106, passes through the interface circuit 105, is sent to the host computer 500, and is processed.
0 or an instruction is sent to the wireless card reader / writer 100.

Next, the case where the wireless card adapter 300 is used will be described. Wireless card adapter 300
Sends the power of the battery 306 to the power transmission circuit 307 via the power switch 309. The power transmission circuit 307 transmits power by a specific DC voltage from the power transmission terminal 308 to the power receiving terminal 203 of the wireless card 200 that is tightly attached and fixed.

As described above, by supplying power from the wireless card adapter 300, when the communication distance between the wireless card 200 and the wireless card reader / writer 100 is long and communication is limited, the shortage of the receiving power of the wireless card 200 can be reduced. It is possible to assist and increase the communicable distance.

Next, a second embodiment will be described. The second embodiment is different from the first embodiment in that the power transmission from the wireless card adapter 300 is transmitted by a non-contact method using an antenna, instead of a contact method using terminals as in the first embodiment. The other components are the same as those of the first embodiment.

That is, as shown in FIG. 4, a power receiving antenna 211 is built in the wireless card 200 instead of the power receiving terminal 203, and
0 instead of the power transmission terminal 308
10 built-in.

When the communication distance is to be increased, the wireless card 200 is held by the wireless card adapter 300. Then, the power switch 309 is turned on, and the battery 306 is turned on.
Is passed through the power transmission circuit 307 and radiated from the power transmission antenna 310 as radio waves.

Radio waves radiated from the power transmission antenna 310 are received in a non-contact manner by the power receiving antenna 211 of the wireless card 200, which is closely attached to and fixed to the wireless card adapter 300, and sent to the power supply circuit of the wireless card 200. Accordingly, when the reception power from the transmission radio wave of the wireless card reader / writer 100 is insufficient, the power can be assisted to extend the communication distance.

FIG. 5 is a block diagram showing a wireless card system using the wireless card adapter 300 of FIG. Note that the power transmission terminal 308 is replaced with the power transmission antenna 310, the power reception terminal 203 is replaced with the power reception antenna 211, and a rectifying / smoothing circuit 212 is newly added, which is different from the first embodiment (FIG. 3). ,
Others are the same as the first embodiment. Further, the communication between the wireless card reader / writer 100 and the wireless card 200 is the same as that in the first embodiment (FIG. 3), and the description is omitted.

In the wireless card adapter 300, the power of the battery 306 is sent to the power transmission circuit 307 via the power switch 309. The power transmission circuit 307 generates a carrier wave of frequency f for transmitting power, and transmits the carrier wave from the power transmission antenna 310 as a radio wave. Note that the frequency f
Is a wireless card reader / writer 100 and a wireless card 20
0 uses a frequency different from the frequency used for communication.

The power transmission wave from the wireless card adapter 300 is received by the power receiving antenna 211 of the wireless card 200, rectified and smoothed by the rectification / smoothing circuit 212, and sent to the power supply circuit 205.

Thus, when the communication distance between the wireless card 200 and the wireless card reader / writer 100 is increased, it is possible to avoid shortage of the receiving power of the wireless card 200 and increase the communicable distance.

Next, a third embodiment will be described. In the third embodiment, a wireless card is closely attached to a wireless card adapter containing a battery, an amplifier circuit, and an antenna.
The wireless card adapter receives the transmission wave from the wireless card reader / writer, amplifies it, and then transmits the amplified signal to the wireless card to extend the communication distance of the wireless card. Plays the role of a relay station. The transmission radio wave from the wireless card is directly sent back to the wireless card reader / writer.

FIG. 6 is a block diagram of a wireless card system using the wireless card adapter 300 with an amplification circuit as described above. The functions of the wireless card reader / writer 100 and the wireless card 200 are different from the first embodiment in that the power receiving terminal 203 is deleted in the wireless card 200, and the other functions are the same as those in the first embodiment. Yes, the configuration of the wireless card adapter 300 is different.

That is, the wireless card adapter 300
Battery 306, power switch 309, receiving antenna 31
1, an amplification circuit 312 and a transmission antenna 313.

The operation of the wireless card adapter 300 in such a configuration will be described. The transmission radio wave of the frequency f1 transmitted from the wireless card reader / writer 100 is received by the reception antenna 311. The received radio wave is amplified by the amplifier circuit 312. The operating power of the amplifier circuit 312 is supplied from the battery 306 via the power switch 309. The signal of the frequency f1 amplified by the amplifier circuit 312 is radiated from the transmission antenna 313 as a radio wave.

The radio wave of the frequency f 1 radiated from the transmitting antenna 313 is received by the antenna 201 of the wireless card 200 which is closely attached to and fixed to the wireless card adapter 300. The level of this received radio wave is
It is larger than the received radio wave directly received from the wireless card reader / writer 100 without using 0. Therefore, the power is rectified and smoothed by the rectification / smoothing circuit 204, and the received power of the power supply circuit 205 is also increased. This power is supplied to each unit as operating power, as described above. Further, since the level of the received radio wave received by the antenna 201 is large, the data can be demodulated by the receiving circuit 207 without error.

As described above, the wireless card 200 is brought into close contact with the wireless card adapter 300 having an amplification circuit as described above.
By fixing, even if the communication distance between the wireless card 200 and the wireless card reader / writer 100 is long, it is possible to avoid shortage of the receiving power of the wireless card 200 and sufficiently receive the received data, thereby increasing the communicable distance. can do.

Next, a fourth embodiment will be described. In the fourth embodiment, a wireless card is closely attached to a wireless card adapter containing a battery, an amplifier circuit, and an antenna.
The wireless card adapter receives and amplifies the transmission wave from the wireless card, amplifies the signal, and transmits the amplified signal to the wireless card reader / writer, thereby extending the communication distance of the wireless card. As in the embodiment, the wireless card adapter plays the role of a relay station. The transmission radio wave from the wireless card reader / writer is directly sent back to the wireless card.

FIG. 7 is a block diagram of a wireless card system using the wireless card adapter 300 with an amplification circuit as described above. The functions of the wireless card reader / writer 100 and the wireless card 200 are different from the first embodiment in that the power receiving terminal 203 is deleted in the wireless card 200, and the other functions are the same as those in the first embodiment. Yes, the configuration of the wireless card adapter 300 is different.

That is, the wireless card adapter 300
Battery 306, power switch 309, receiving antenna 31
4, an amplification circuit 315, and a transmission antenna 316.

The operation of the wireless card adapter 300 in such a configuration will be described. The transmission radio wave from the radio card reader / writer 100 is directly received by the antenna 201 of the radio card 200 fixed and adhered to the radio card adapter 300, processed, and then transmitted from the antenna 201 at the frequency f2.

Frequency f2 radiated from antenna 201
Is transmitted to the receiving antenna 3 of the wireless card adapter 300.
Received at 14. The received radio waves are amplified by the amplifier circuit 315. The operating power of the amplifier circuit 315 is supplied from the battery 306 via the power switch 309. Amplifier circuit 3
The signal of the frequency f2 amplified by the transmission antenna 3
16 radiates as radio waves.

The radio wave of the frequency f 2 radiated from the transmitting antenna 316 is received by the receiving antenna 104 of the wireless card reader / writer 100. The level of the received radio wave is higher than the received radio wave directly received from the wireless card 200 without using the wireless card adapter 300. Therefore, errors in the demodulation result are reduced, and the communication distance can be increased.

Next, a fifth embodiment will be described. In the fifth embodiment, a wireless card is closely attached to a wireless card adapter containing a battery, an amplifier circuit, and an antenna.
After being fixed, the transmission wave from the wireless card reader / writer is received by the wireless card adapter, amplified, and then transmitted to the wireless card. Further, the transmission wave from the wireless card is received by the wireless card adapter, amplified, and then transmitted to the wireless card reader / writer, thereby extending the communication distance of the wireless card. As in the fourth embodiment, the wireless card adapter plays the role of a relay station.

FIG. 8 is a block diagram of a wireless card system using the wireless card adapter 300 with an amplification circuit as described above. The functions of the wireless card reader / writer 100 and the wireless card 200 are different from the first embodiment in that the power receiving terminal 203 is deleted in the wireless card 200, and the other functions are the same as those in the first embodiment. Yes, the configuration of the wireless card adapter 300 is different.

That is, the wireless card adapter 300
Battery 306, power switch 309, receiving antenna 31
7, an amplifier circuit 318, and a transmission antenna 319.

The operation of the wireless card adapter 300 in such a configuration will be described. The transmission radio wave of the frequency f1 transmitted from the wireless card reader / writer 100 is received by the reception antenna 317. The received radio wave is amplified by the amplifier circuit 318. The operating power of the amplifier circuit 318 is supplied from the battery 306 via the power switch 309. The signal of the frequency f1 amplified by the amplifier circuit 318 is radiated from the transmission antenna 319 as a radio wave.

The radio wave of the frequency f 1 radiated from the transmitting antenna 319 is received by the antenna 201 of the wireless card 200 which is closely attached to and fixed to the wireless card adapter 300. After the received signal is processed, a transmission radio wave having a frequency f2 is radiated from the antenna 201.

Frequency f2 radiated from antenna 201
Is transmitted to the receiving antenna 3 of the wireless card adapter 300.
Receive at 17. The received radio wave is amplified by the amplifier circuit 318. The signal of the frequency f2 amplified by the amplifier circuit 318 is radiated from the transmission antenna 319 as a radio wave.
The radio wave of frequency f2 radiated from the transmitting antenna 319 is transmitted to the receiving antenna 1 of the wireless card reader / writer 100.
04.

According to this system, the wireless card 200
The received radio wave is also strong, and the radio wave sent back from the wireless card 200 to the wireless card reader / writer 100 is also strong, so that the communication distance can be increased.

The frequencies f1 and f2 may be different from each other or may be the same frequency. Next, a sixth embodiment will be described.

In the sixth embodiment, the reception level detecting function is provided in the wireless card adapter with an amplification circuit according to the third to fifth embodiments. The wireless card adapter 300 includes a battery 306, a receiving antenna 32
0 (corresponding to the reception antennas 311, 314, and 317), a reception level detection circuit 321, and a power switch 32
2. Amplifying circuit 323 (the amplifying circuits 312, 315, 3
18) and a transmitting antenna 324 (corresponding to the transmitting antennas 313, 316 and 319).

In such a configuration, the receiving antenna 3
The reception radio wave received by the reception level detection circuit 321
And the reception level is detected. As a result, when the reception level exceeds a predetermined value, the power switch 322 is turned on, and the power of the battery 306 is supplied to the amplifier circuit 323. When the reception level becomes equal to or lower than the predetermined value, the power switch 322 is turned off, and the power supply to the amplifier circuit 323 is stopped. Thus, useless power consumption of the wireless card adapter 300 can be suppressed.

As described above, according to the above embodiment, the communication distance of the wireless card can be easily extended by closely attaching and fixing the wireless card to the wireless card adapter having a built-in battery.

In general, a wireless card with a built-in battery cannot be used if the power of the battery is suddenly exhausted. However, in this embodiment, even when the battery of the wireless card adapter is exhausted, the ID and information are not stored in the battery. Since the data is written in the wireless card of the formula, the communication distance is shortened, but it can always correspond to the application.

Further, it is possible to cope with applications of various communication distances by using a wireless card and a wireless card adapter, which is convenient to carry. In addition, the shape of the wireless card adapter allows the wireless card to be fixed to a shirt, a suit pocket, or the like, which is convenient to carry when using.

Further, according to the wireless card adapter with a power transmission terminal, the power transmission system from the wireless card adapter to the wireless card is wired, so that the power loss is small and the power consumption of the wireless card adapter is small.

According to the wireless card adapter for non-contact power transmission, since both the wireless card and the wireless card adapter do not have external contact terminals, there is no fear of malfunction due to wear and the reliability is excellent. .

Further, according to the wireless card adapter with an amplification circuit, the wireless card adapter plays the role of a relay amplifier and increases the communication distance. Further, since the transmission wave is amplified, the received signal becomes large, and the demodulation of data becomes easy. Also, a large amount of received power obtained from radio waves can be obtained, and the communication distance can be increased. Furthermore, since the wireless card side does not need to be modified, it can be easily spread and can be manufactured at low cost.

In the above-described embodiment, the power switch 309 is turned on and off in accordance with the attachment / detachment of the wireless card 200 to / from the holding section 303.
It is not necessary to do so, and for example, it may be manually turned on and off.

[0070]

As described above in detail, according to the present invention, it is possible to provide a wireless card adapter which can easily extend the communication distance of a batteryless wireless card and is portable.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an external configuration of a wireless card system according to a first embodiment of the present invention.

FIG. 2 is a side view of the wireless card adapter.

FIG. 3 is a block diagram of a wireless card system using a wireless card adapter with a power transmission terminal.

FIG. 4 is a perspective view schematically showing an external configuration of a wireless card system according to a second embodiment of the present invention.

FIG. 5 is a block diagram of a wireless card system using a wireless power transfer wireless card adapter;

FIG. 6 is a block diagram of a wireless card system using a wireless card adapter with an amplification circuit according to a third embodiment of the present invention.

FIG. 7 is a block diagram of a wireless card system using a wireless card adapter with an amplification circuit according to a fourth embodiment of the present invention.

FIG. 8 is a block diagram of a wireless card system using a wireless card adapter with an amplification circuit according to a fifth embodiment of the present invention.

FIG. 9 is a block diagram of a wireless card adapter with a reception level detection function according to a sixth embodiment of the present invention.

[Explanation of symbols]

100 wireless card reader / writer (communication device), 1
01 body part, 102 antenna part, 103 transmission antenna, 104 reception antenna, 106 data processing circuit, 107 transmission circuit, 108 reception circuit, 200 wireless card, 201 ... antenna, 20
2 IC chip, 203 power receiving terminal, 204
Rectifier / smoothing circuit 205 power supply circuit 206 clock extraction circuit 207 reception circuit 208 transmission circuit 209 data processing circuit 210 memory
211: power receiving antenna, 212: rectifying / smoothing circuit, 300: wireless card adapter, 301: adapter body, 302: close contact fixing portion, 303: holding portion, 3
04 holding piece, 305: battery storage section, 306: battery,
307: power transmission circuit, 308: power transmission terminal, 3
09 power switch, 310 power transmitting antenna,
311, 314, 317, 320..., Receiving antenna, 3
12, 315, 318, 323... Amplifying circuit, 313,
316, 319, 324: transmission antenna, 321 ...
Reception level detection circuit, 322... Power switch.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroshi Koike 1-1-1, Shibaura, Minato-ku, Tokyo Inside Toshiba head office

Claims (12)

[Claims] A wireless communication function of wirelessly transmitting and receiving to and from an external communication device via the antenna; and converting a radio wave from the communication device to electric power to convert the radio wave from the communication device into power. Holding means for detachably holding a wireless card having a power generation function for generating a power supply used in the battery; a battery; and power transmission means for transmitting the power of the battery to the wireless card held by the holding means. And a portable adapter body on which the holding means, the battery, and the power transmission means are mounted. 2. The power transmission unit has a power transmission terminal connected to a power reception terminal provided on the wireless card when the wireless card is held by the holding unit. The wireless card adapter according to claim 1, wherein the power of the battery is transmitted through the power receiving terminal. 3. The power transmission means has a power transmission antenna for outputting the electric power of the battery as a radio wave. When the wireless card is held by the holding means, the power wave from the power transmission antenna is transmitted to the power transmission antenna. The wireless card adapter according to claim 1, wherein the power of the battery is transmitted by transmitting to a power receiving antenna provided on the wireless card. 4. The wireless card adapter according to claim 3, wherein a frequency of a power wave transmitted from the power transmission antenna is different from a frequency of a radio wave transmitted and received between the wireless card and the communication device. 5. The wireless card adapter according to claim 1, further comprising a power switch for turning on and off the power from the battery. 6. The wireless card adapter according to claim 5, wherein said power switch is turned on and off in conjunction with attachment and detachment of said wireless card to and from said holding means. 7. A wireless communication function having an antenna, and wirelessly transmitting and receiving to and from an external communication device via the antenna, and converting a radio wave from the communication device into electric power to convert the radio wave into electric power. Holding means for detachably holding a wireless card having a power generation function for generating a power supply used in the communication apparatus; a reception antenna for receiving a radio wave transmitted from the communication device; and an amplification means for amplifying a radio wave received by the reception antenna. A transmitting antenna for transmitting the radio wave amplified by the amplifying means to the wireless card held by the holding means; a battery for supplying operating power to the amplifying means; A wireless card adapter, comprising: a receiving antenna, an amplifying unit, a transmitting antenna, and a portable adapter body on which a battery is mounted. 8. A wireless communication function that has an antenna and wirelessly transmits and receives to and from an external communication device via the antenna, and converts a radio wave from the communication device into electric power to convert the electric wave into electric power in the wireless card. Holding means for detachably holding a wireless card having a power supply generating function for generating a power supply used in the wireless communication apparatus; a receiving antenna for receiving a radio wave transmitted from an antenna of the wireless card held by the holding means; Amplifying means for amplifying the radio wave received by the transmitting means; a transmitting antenna for transmitting the radio wave amplified by the amplifying means to the communication device; a battery for supplying power for operation to the amplifying means; Wireless adapter, comprising: a portable adapter body on which is mounted means, a receiving antenna, an amplifying means, a transmitting antenna, and a battery. Ta. 9. A wireless communication function that has an antenna and wirelessly transmits and receives to and from an external communication device via the antenna, and converts a radio wave from the communication device into electric power to convert the radio wave into electric power. Holding means for detachably holding a wireless card having a power generation function for generating a power supply used in the wireless communication apparatus; and a radio wave transmitted from an antenna of the wireless card held by the holding means, or transmitted from the communication device. A receiving antenna that receives a radio wave; an amplifying unit that amplifies a radio wave received by the receiving antenna; and a radio wave that is amplified by the amplifying unit is transmitted to the communication device or the wireless card held by the holding unit. A transmitting antenna for transmitting; a battery for supplying operating power to the amplifying means; a holding means, a receiving antenna, an amplifying means, and a transmitting antenna; , And a wireless card adapter which is characterized by comprising a portable adapter body for mounting the battery, the. 10. A power switch for turning on and off the power from the battery.
10. The wireless card adapter according to any one of items 9 to 9. 11. The wireless card adapter according to claim 10, wherein said power switch is turned on and off in conjunction with attachment and detachment of said wireless card to and from said holding means. 12. A receiving level detecting means for detecting a level of a radio wave received by the receiving antenna, wherein on / off control of the power switch is performed in accordance with the receiving level detected by the receiving level detecting means. The wireless card adapter according to any one of claims 7 to 9, wherein: