JP2000020648A - Wireless card processing device - Google Patents

Abstract

(57) Abstract: The present invention provides a wireless card processing device capable of suppressing generation of unnecessary radio waves, reducing power consumption, and preventing the information processing equipment in the vicinity from being adversely affected. It is intended to be. In a reader / writer for performing wireless data communication with a wireless card, control means for permitting or stopping transmission of radio waves to the wireless card.
c, 11e and 11f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a wireless card processing device for performing data communication with a wireless card.

[0002]

2. Description of the Related Art As is well known, a wireless card processing device such as the one mentioned above is often used in, for example, an access control system. In this entry / exit management system, when a person carrying a wireless card approaches the gate, the wireless card processing device performs data communication with the wireless card to perform authentication processing, and controls opening and closing of the gate based on the authentication result. I am trying to do it.

[0003]

By the way, such a conventional wireless card processing device always emits radio waves when the power is turned on to prepare for data communication with the wireless card. For this reason, there is a problem that the power consumption is increased and the surrounding information processing devices are adversely affected.

Accordingly, the present invention has been made in view of the above circumstances, and can suppress the generation of unnecessary radio waves, reduce the power consumption, and also prevent the surrounding information processing equipment from being adversely affected. It is an object of the present invention to provide a very good wireless card processing device.

[0005]

SUMMARY OF THE INVENTION A wireless card processing device according to the present invention is directed to a device for performing data communication with a wireless card. Further, a control means for permitting or stopping transmission of radio waves to the wireless card is provided.

[0006] According to the above configuration, since the control means for permitting or stopping the transmission of the radio wave to the wireless card is provided, the generation of the unnecessary radio wave can be suppressed and the power consumption can be reduced. At the same time, it is possible to prevent adverse effects on surrounding information processing devices.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. That is, FIG.
Is a reader / writer 11 that constitutes the wireless card processing device described in this embodiment;
And a wireless card 12 for performing wireless data communication.

The reader / writer 11 includes an interface 11 a for connecting to an external device (not shown) and a display unit 1.
1b, operation unit 11c, power supply unit 11d, control circuit 11e,
A sensor 11f, a modulation circuit 11g, a transmission driver 11h,
Transmitting antenna 11i, receiving antenna 11j, input circuit 1
1k, a differential amplifier 111, a demodulation circuit 11m, and a clock generation circuit 11n are main components.

The control circuit 11e generates a command to be given to the wireless card 12 and data DATA for writing, generates a carrier signal f1 of a predetermined frequency, and supplies it to the modulation circuit 11g. Then, the modulation circuit 11g modulates the carrier signal based on the data DATA, and transmits the modulated signal via the transmission driver 11h and the transmission antenna 11i.

On the other hand, the wireless card 12
a, power generation circuit 12b, modulation circuit 12c, demodulation circuit 1
2d, clock generation circuit 12e, control logic circuit 12
f and the nonvolatile memory 12g are main components.

In the wireless card 12, the reader / writer 11
The antenna 12a receives a radio wave transmitted from the antenna, and the power generation circuit 12b generates operation power from the received signal.

The received signal is demodulated by a demodulation circuit 12d and written to a nonvolatile memory 12g via a control logic circuit 12f. Furthermore, a non-volatile memory 12g
Is read by the modulation circuit 12c via the control logic circuit 12f and transmitted from the antenna 12a.

The radio wave transmitted from the wireless card 12 is received by a receiving antenna 11j of the reader / writer 11, and the received signal is transmitted through a differential amplifier 11l to a demodulation circuit 11m.
After demodulation, the data is supplied to the control circuit 11e and processed.

Here, the sensor 11 of the reader / writer 11
“f” detects in a non-contact manner whether or not there is a person near the reader / writer 11, and the detection result is a control circuit 11e.
Is supplied to When the sensor 11f reports a detection result indicating that there is no person, the control circuit 11 stops the generation of the carrier signal f1 and prevents the transmission antenna 11i from transmitting radio waves. That is, the control circuit 11
When the sensor 11f reports a detection result indicating that a person is present, a carrier signal f1 is generated and the transmission antenna 11i is generated.
To transmit radio waves.

The operation unit 11c of the reader / writer 11
Is provided with a radio transmission request switch (not shown). When this switch is off,
The control circuit 11e controls generation of the carrier signal f1 based on the detection result of the sensor 11f. However, when the radio wave transmission request switch is turned on, the control circuit 11e operates to generate the carrier signal f1 regardless of the detection result of the sensor 11f.

FIG. 2 shows an example in which the reader / writer 11 is applied to a gate opening / closing system. That is, the reader / writer 11 transmits radio waves from the transmission antenna 11i when the sensor 11f detects a person or when the radio wave transmission request switch 11c1 provided on the operation unit 11c is turned on, and Data communication is performed with the wireless card 12 possessed by a person.

Then, based on the result of the data communication with the wireless card 12, the reader / writer 11
Is released, and then a radio wave transmission end command is sent from the transmitting antenna 11i to the wireless card 12, where
The process ends.

According to the above configuration, the sensor 11f
Has detected a person, or a radio wave transmission request switch 1
Only when 1c1 is turned on, reader / writer 1
Since the radio wave 1 is transmitted, generation of unnecessary radio waves can be suppressed, power consumption can be reduced, and adverse effects on surrounding information processing devices can be prevented.

FIG. 3 shows the reader / writer 1 described above.
1 shows another example in which No. 1 is applied to a gate opening / closing system. That is, in this gate opening / closing system, the gate door 17 is installed so as to close the passage 16 sandwiched between the opposing partition walls 14 and 15. And one partition wall 1
5, a sensor 11 separated from the reader / writer 11
The reader / writer 11 is installed at a position closer to the gate door 17 than the sensor 11f.

A person crosses the sensor 11f and the gate door 17
, The reader / writer 11 transmits radio waves based on the detection result of the sensor 11f, and performs data communication with the wireless card 12 owned by the person. And the leader
The writer 11 unlocks the gate door 17 based on the result of the data communication with the wireless card 12, and thereafter sends a radio wave transmission end command to the wireless card 12, where the processing is ended.

During the data communication with the wireless card 12, that is, during the authentication process for unlocking the key of the gate door 17, the reader / writer 11 uses another sensor 11f by the sensor 11f. When it is detected that a person has entered, or when it is detected that a person who has entered first has returned, the certification process is immediately stopped to stop the generation of radio waves.

According to the above configuration, the sensor 11f for determining whether or not it is necessary to transmit a radio wave is installed separately from the reader / writer 11, so that a person can use the reader / writer 11. , The presence or absence of a person can be detected at an early stage before reaching, and quick response is possible.

FIG. 4 shows the reader / writer 1 described above.
1 shows still another example in which No. 1 is applied to a gate opening / closing system. That is, in this gate opening / closing system, the gate door 21 is installed on one of the partition walls 19 facing the passage 20 sandwiched between the opposing partition walls 18 and 19. The reader / writer 11 is installed near the gate door 21 of the one partition wall 19. Sensors 11f1 and 11f2 separated from the reader / writer 11 are provided on both sides of the gate door 21 of the one partition wall 19.

The operation of the gate opening / closing system shown in FIG. 4 will be described with reference to the flowchart shown in FIG. First, when one of the sensors 11f1 or 11f2 detects the passage of a person (step S1).
1), the reader / writer 11 transmits a radio wave (step S)
12), perform authentication processing by performing data communication with the wireless card 12 (step S13).

When an authentication result permitting the passage of the gate door 21 is obtained (OK in step S13), the reader / writer 11 releases the key of the gate door 21 (step S14), and thereafter, transmits the radio wave. The transmission is stopped (step S15). If an authentication result that does not permit the passage of the gate door 21 is obtained (NG in step S13), the reader / writer 11 sends the information to one of the sensors 11f1 or 1f1.
After 1f2 detects the passage of a person (step S16), transmission of radio waves is stopped (step S15).

As shown in FIG. 5B, one of the sensors 11f1 or 11f2 detects the passage of a person (step S21), the reader / writer 11 transmits a radio wave (step S22), and If any of the sensors 11f1 or 11f2 detects the passage of a person (Step S24) during the execution of the authentication process of Step 12 (Step S23), the authentication process is interrupted (Step S25), Stop transmitting radio waves (step S2
6).

According to the above configuration, the state where only one person is around the reader / writer 11 is detected by the two sensors 11f1 and 11f2, and the authentication process is executed in the detected state. Therefore, it is possible to prevent a problem that own data is written to another person's wireless card 12 due to the presence of a plurality of wireless cards 12 in the same area.

FIG. 6 shows the reader / writer 1 described above.
1 shows still another example in which No. 1 is applied to a gate opening / closing system. That is, in this gate opening / closing system, the gate door 25 is installed so as to close the passage 24 sandwiched between the opposing partition walls 22 and 23. On the passage 24, an entry prohibition gate 26 is provided.

Then, the two sensors 11f3, 1 separated from the reader / writer 11
1f4 is installed, and the reader / writer 11 is installed at a position closer to the gate door 25 than the sensors 11f3 and 11f4.

By the two sensors 11f3 and 11f4,
When it is detected that one person is moving along the path 24 toward the gate door 25, the reader / writer 11 transmits a radio wave, performs data communication with the wireless card 12, and executes an authentication process. During this authentication process, the reader / writer 11
Closes the entry prohibition gate 26 to prevent the second person from approaching the gate door 25. Then, after the key of the gate door 25 is released, a radio wave transmission end command is sent to the wireless card 12, and the process is ended here.

According to the above configuration, the two sensors 11f3 and 11f4 and the entry prohibition gate 26 enable
Since it is possible to more reliably create a state where there is only one person around the reader / writer 11, security can be further enhanced.

FIG. 7 shows the reader / writer 1 described above.
1 shows an example in which No. 1 is applied to a wireless card public telephone fee settlement system. That is, the reader / writer 11 built in the wireless card public telephone 27 transmits data when the sensor 11f detects a person or when the radio wave transmission request switch 11c1 provided on the operation unit 11c is turned on. Radio waves are transmitted from the antenna 11i, and data communication with the wireless card 12 possessed by the person is started.

Then, the reader / writer 11 sends the charge settlement result to the wireless card 12 after the end of the call, and then sends a radio wave transmission end command to the wireless card 12, where the processing is ended.

According to the above configuration, the sensor 11f
Has detected a person, or a radio wave transmission request switch 1
Only when 1c1 is turned on, reader / writer 1
Since the radio wave 1 is transmitted, generation of unnecessary radio waves can be suppressed, power consumption can be reduced, and adverse effects on surrounding information processing devices can be prevented. It should be noted that the present invention is not limited to the above-described embodiment, and can be variously modified and implemented without departing from the scope of the invention.

[0035]

As described in detail above, according to the present invention,
It is possible to provide an extremely good wireless card processing device that can suppress the generation of unnecessary radio waves, reduce the power consumption, and prevent the information processing devices in the vicinity from being adversely affected.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a wireless card processing device according to the present invention.

FIG. 2 is a diagram illustrating an example in which the reader / writer described in the embodiment is applied to a gate opening / closing system.

FIG. 3 is a view for explaining another example in which the reader / writer is applied to a gate opening / closing system.

FIG. 4 is a view for explaining still another example in which the reader / writer is applied to a gate opening / closing system.

FIG. 5 is a flowchart for explaining the operation of the example shown in FIG. 4;

FIG. 6 is a view for explaining still another example in which the reader / writer is applied to a gate opening / closing system.

FIG. 7 is a view for explaining an example in which the reader / writer is applied to a wireless card public telephone fee settlement system.

[Explanation of symbols]

 11: Reader / writer, 12: Wireless card, 13: Gate door, 14, 15: Partition wall, 16: Passage, 17: Gate door, 18, 19: Partition wall, 20: Passage, 21: Gate door, 22, 23: Partition wall, 24: Passageway, 25: Gate door, 26: Entry gate, 27: Wireless card public telephone.

Claims (8)

[Claims] 1. A wireless card processing device for performing data communication with a wireless card, comprising a control means for permitting or stopping transmission of radio waves to the wireless card. 2. The wireless communication system according to claim 1, wherein the control unit stops transmitting a radio wave to the wireless card by preventing a carrier signal from being supplied to an antenna.
A wireless card processing device according to claim 1. 3. The control device according to claim 2, wherein the control unit has a sensor for detecting the presence or absence of a human body in a non-contact manner, and permits or stops transmission of a radio wave to the wireless card based on a detection result of the sensor. Item 2. The wireless card processing device according to Item 1. 4. The wireless card according to claim 1, wherein said control means has an externally operable switch, and permits or stops transmission of radio waves to said wireless card in accordance with an operation of said switch. Processing equipment. 5. The wireless communication system according to claim 1, wherein the control unit includes a switch for permitting or stopping transmission of radio waves to the wireless card by an external operation, and a non-contact switch in a state where the switch is in an operation position for permitting transmission of radio waves to the wireless card. 2. The wireless card processing device according to claim 1, further comprising: a sensor for detecting presence or absence of a human body, and permitting or stopping transmission of radio waves to the wireless card based on the detection result. 6. The wireless card processing according to claim 3, wherein the control unit stops transmitting radio waves to the wireless card when the sensor detects a human body during data communication with the wireless card. apparatus. 7. The wireless card processing device according to claim 3, wherein the sensor is installed at a position separated from a main body of the wireless card processing device. 8. The wireless card processing device according to claim 7, wherein a plurality of the sensors are arranged around the main body of the wireless card processing device so that it can detect that there is only one person around the main body. A wireless card processing device according to claim 1.