JPH10222622A - Radio card system, radio card system communicating method, information processing system and information processing system communicating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a communication time in radio communication with plural transmission-system radio cards in a communication area and also to reduce the collision of response data. SOLUTION: The control circuit 2 of a card reader/writer 1 controlled by a host computer 100 recognizes a timer 5 with respect to the radio card 10 which enters into the communication area, successively transmits card address requests including a reception start time and a reception time section number in every communication transmission-system and starts reception from the designated reception start time. Then, the control circuit 13 of the radio card 10 generates a random number by a random number generator 15 with a numerical value peculiar to the card and the reception times of the card address requests as parameter based on the reception time section number included in the received card address requests so as to select one time section and executes the response of the peculiar card address to the card reader/writer 1 to the selected section time through the use of the timer 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless card system which comprises an information processing device such as a card reader / writer and a wireless card for performing wireless communication, and performs wireless communication using a plurality of communication transmission systems. The present invention relates to a communication method of a wireless card system, an information processing system, and a communication method of an information processing system.

[0002]

2. Description of the Related Art Conventionally, when wireless cards of a plurality of communication transmission systems coexist in one wireless card system, a reader / writer as an information processing device alternately calls and receives sequentially in different communication transmission systems. To communicate with wireless cards of a plurality of communication transmission schemes. Alternatively, the card responds unconditionally without depending on the command.

However, when wireless cards of a plurality of communication transmission systems coexist in a single system, communication takes time because calling and receiving are sequentially performed in different systems. Also, if there are multiple cards in the communication area, regardless of the method, multiple cards respond at once,
Receiving became impossible due to data collision.

[0004]

As described above, when wireless cards of a plurality of communication transmission systems coexist in a single system, it takes time to perform communication because calls and receptions are sequentially performed in different systems. However, when a plurality of cards exist in the communication area, there is a problem that the plurality of cards respond at once regardless of the communication transmission method, and a collision of data occurs to make it impossible to receive.

Accordingly, the present invention provides a wireless card system and a wireless card system capable of shortening the communication time in wireless communication with wireless cards of a plurality of communication transmission systems in a communication area and reducing collision of response data. It is an object of the present invention to provide a communication method, an information processing system, and a communication method of the information processing system.

[0006]

An information processing system according to the present invention comprises a plurality of non-contact information recording media on which various types of information are recorded, and information reading and writing to and from the plurality of non-contact information recording media in a non-contact manner. In the information processing system configured from the non-contact information recording device, the non-contact information processing device, when starting the non-contact information recording medium, from the non-contact information recording medium according to the start information to be transmitted Encoding means for encoding a reception start time at which reception of transmitted response information is started, and transmission means for transmitting start information including the reception start time encoded by the encoding means to the contacted information recording medium It is composed of

A wireless card system according to the present invention comprises: a plurality of wireless cards in which a plurality of different communication transmission systems are mixed; reading of information by wireless communication with the plurality of wireless cards;
In a wireless card system including an information processing device that performs writing, when the information processing device activates the wireless card, a transmitting unit that sequentially transmits an activation signal for each of the different communication transmission schemes, And a receiving means for sequentially transmitting a start signal for each of the different communication transmission schemes and then simultaneously receiving response signals from wireless cards of the respective communication transmission schemes.

The wireless card system according to the present invention is a wireless card system comprising a plurality of wireless cards and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards. However, when activating the wireless card, a reception start time to start receiving a response signal from the wireless card in response to a start signal to be transmitted, and a division number obtained by dividing a predetermined reception time from the reception start time into a plurality. Encoding means for encoding, and a first transmission means for transmitting to the wireless card an activation signal including the reception start time and the number of divisions of the predetermined reception time encoded by the encoding means, The wireless card is the first
When the start signal transmitted from the transmitting means is received, one of the divided reception times is selected from the encoded reception start time and the division number of the predetermined reception time included in the start signal. Selecting means for transmitting a response signal to the information processing apparatus at the reception time selected by the selecting means;
Transmission means.

A wireless card system according to the present invention is a wireless card system comprising a plurality of wireless cards and an information processing apparatus for reading and writing information by wireless communication with the plurality of wireless cards. However, when the wireless card is activated, a dividing unit that divides a predetermined reception time from a reception start time to start receiving a response signal from the wireless card according to the activation signal to be transmitted into a plurality of units, Encoding means for encoding the divided number of the predetermined reception time and the reception start time, and an activation signal including the division number and the reception start time of the predetermined reception time encoded by the encoding means. First transmitting means for transmitting to the wireless card; and a response signal transmitted from the plurality of wireless cards in response to the activation signal transmitted by the first transmitting means. And control means for performing control to change the number of divisions of the predetermined reception time divided by the division means according to the number of reception times at which the plurality of response signals are received when the plurality of response signals are received at one reception time. When the wireless card receives the start signal transmitted from the first transmitting means, the wireless card receives the start signal divided from the encoded reception start time and the division number of the predetermined reception time included in the start signal. The information processing apparatus includes a selection unit that selects one of the reception times from the time period, and a second transmission unit that transmits a response signal to the information processing apparatus at the reception time selected by the selection unit.

A wireless card system according to the present invention comprises: a plurality of wireless cards in which a plurality of different communication transmission systems are mixed; reading of information by wireless communication with the plurality of wireless cards;
In a wireless card system including an information processing device that performs writing, when the information processing device activates the wireless card, a reception start that starts receiving a response signal from the wireless card in response to an activation signal to be transmitted. A dividing unit that divides a predetermined reception time from a time into a plurality of pieces; an encoding unit that encodes the number of divisions of the predetermined reception time divided by the division unit and the reception start time; First transmitting means for sequentially transmitting an activation signal including the number of divisions of the predetermined reception time and the reception start time for each of the different communication transmission schemes, and the first transmission means transmitting an activation signal for each of the different communication transmission schemes After sequentially transmitting, the receiving means for simultaneously receiving response signals from the wireless cards of the respective communication transmission systems from the reception start time, and the wireless card is transmitted from the first transmitting means. Selecting means for selecting one of the reception times divided from the encoded reception start time and the number of divisions of the predetermined reception time included in the start signal when receiving the start signal; And a second transmitting means for transmitting a response signal to the information processing apparatus in a communication transmission method specific to the reception time selected in the step (a).

[0011] A communication method of an information processing system according to the present invention includes a plurality of non-contact information recording media on which various kinds of information are recorded, and a non-contact information reading and writing method for reading and writing information to and from the plurality of non-contact information recording media. A communication method of an information processing system including a contact information processing device, wherein the non-contact information processing device activates the non-contact information recording medium,
Encode a reception start time at which reception of response information transmitted from the non-contact information recording medium is started in accordance with the activation information to be transmitted, and transmit the activation information including the encoded reception start time to the contacted information recording medium. It is characterized in that it is transmitted.

A communication method of a wireless card system according to the present invention includes a plurality of wireless cards in which a plurality of different communication transmission systems are mixed, and an information processing apparatus which reads and writes information by wireless communication with the plurality of wireless cards. A communication method for a wireless card system, comprising: when the information processing device activates the wireless card, sequentially transmits an activation signal for each of the different communication transmission methods, and transmits an activation signal for each of the different communication transmission methods. After transmitting sequentially, response signals from wireless cards of each communication transmission method are simultaneously received.

A communication method for a wireless card system according to the present invention is a communication method for a wireless card system comprising a plurality of wireless cards and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards. When the information processing device activates the wireless card,
Encoding a reception start time to start receiving a response signal from the wireless card according to the start signal to be transmitted, and a division number obtained by dividing a predetermined reception time from the reception start time into a plurality,
A start signal including the encoded reception start time and the division number of the predetermined reception time is transmitted to the wireless card, and when the wireless card receives the start signal transmitted from the information processing device, One of the divided reception times is selected from the coded reception start time and the number of divisions of the predetermined reception time, and a response signal is transmitted to the information processing device at the selected reception time. It is characterized by doing.

A communication method for a wireless card system according to the present invention is a communication method for a wireless card system comprising a plurality of wireless cards and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards. When the information processing device activates the wireless card,
A predetermined reception time from a reception start time to start receiving a response signal from the wireless card according to a start signal to be transmitted is divided into a plurality of pieces, and the number of divisions of the divided predetermined reception time and the reception start time are encoded. And transmits an activation signal including the encoded division number of the predetermined reception time and the reception start time to the wireless card, and responds from the plurality of wireless cards in response to the transmitted activation signal. When a plurality of signals are received in one of the divided reception times, control is performed to change the number of divisions of the predetermined reception time in accordance with the number of reception times in which the plurality of response signals are received, and When receiving the activation signal transmitted from the information processing device, one of the reception times divided from the encoded reception start time included in the activation signal and the number of divisions of the predetermined reception time is set to one reception time. -Option, and is characterized in that the response signal to the information processing apparatus to the selected reception time to the transmission.

A communication method of a wireless card system according to the present invention includes a plurality of wireless cards in which a plurality of different communication transmission systems are mixed, and an information processing apparatus for reading and writing information by wireless communication with the plurality of wireless cards. A communication method for a wireless card system, comprising: when the information processing device activates the wireless card, a predetermined time from a reception start time to start receiving a response signal from the wireless card in response to an activation signal to be transmitted. The reception time is divided into a plurality of parts, the division number of the divided predetermined reception time and the reception start time are encoded, and the activation signal including the encoded division number of the predetermined reception time and the reception start time is different from the start signal. After sequentially transmitting for each communication transmission method, and sequentially transmitting a start signal for each of the different communication transmission methods, from the reception start time, the wireless card of each communication transmission method Upon receiving the response signal at the same time, when the wireless card receives the activation signal transmitted from the information processing device, the wireless card is divided from the encoded reception start time and the division number of the predetermined reception time included in the activation signal. One of the reception times is selected, and a response signal is transmitted to the information processing apparatus by a communication transmission method specific to the selected reception time.

[0016]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a wireless card system according to the present invention. That is, the card reader / writer 1 controlled by the host computer 100 includes a control circuit 2 that controls the entire control, a transmission circuit 3 that is controlled by the control circuit 2, a reception circuit 4,
And a timer 5. These transmission circuits 3
And the receiving circuit 4 are connected to a loop-shaped transmitting antenna coil 6 and a receiving antenna coil 8, respectively.

On the other hand, as a non-contact information recording medium, a non-contact I
The wireless card 10 including a C card and the like includes a transmission / reception antenna coil 11, a modulation / demodulation circuit 12, a control circuit 13, and a memory 14. The control circuit 13
Is provided with a random number generator 15 for generating random numbers and a timer 16. The wireless card 10 has a number unique to the card in the memory 14 (hereinafter referred to as a card address).

The card reader / writer 1 as a non-contact information processing device issues a call (card address request) to the wireless card 10 entering the communication area and receives a card address. When the card address is successfully received, the card reader / writer 1 performs wireless communication with a specific wireless card 10 using the received card address.

The control circuit 2 of the card reader / writer 1 transmits a card address request to the wireless cards 10,... In the communication area. FIG. 2 shows a configuration example of a card address request according to the present invention.
It consists of a reception start time and the number of reception time segments.
That is, the card address request generated by the control circuit 2 includes a command sequence indicating a card address request corresponding to the communication transmission method, a time to start receiving data from the wireless card 10 after the transmission of the card address request, and a time to receive the data. And the number of sections encoded. In addition,
The encoding referred to here is a number representing a time.

Upon receiving the card address request, the control circuit 13 of the wireless card 10 sends a unique card address to the card reader / writer 1 after a predetermined time specified by the card address request using the timer 16 has elapsed. Send.

The card reader / writer 1 of the present invention comprises:
In order to be able to use wireless cards 10,... Of a plurality of different communication transmission methods and transmission protocols in one wireless card system, card addresses are sequentially requested for the wireless cards 10,. Send

For example, communication transmission method 1 and communication transmission method 2
When there is a wireless card 10 of either of the two systems, the control circuit 2 of the card reader / writer 1 first transmits a card address request by the communication transmission system 1, and then transmits the card address request by the communication transmission system 2. Submit the request. The card reader / writer 1 receives the response signal from the wireless card 10 at the same time for the two communication transmission methods after the completion of the card address request of the communication transmission method 2.

Therefore, the control circuit 2 determines the time from when the respective communication transmission systems are transmitted using the timer 5 until the card reader / writer 1 receives the response signal from the wireless card 10,. By encoding (reception start time, reception time division number) in the card address request of each communication transmission method, the wireless card 10 of each method can be used.
.. Can respond using the timer 16 in accordance with the time that the card reader / writer 1 can receive.

The card reader / writer 1 starts wireless communication with the individual wireless card 10 using the card address that has been normally received. Next, an operation in which the card reader / writer 1 receives a card address from a plurality of wireless cards 10 using a plurality of communication transmission methods in such a configuration will be described with reference to a timing chart of FIG. In the communication area of the card reader / writer 1, a plurality of wireless cards 10, which may have different communication transmission methods,
.. Exist, and the communication transmission method at this time is the communication transmission method 1
It is assumed that one of the two systems, namely, and the communication transmission system 2 exists.

First, the control circuit 2 of the card reader / writer 1
Transmits a card address request (card address request communication transmission method 1, reception start time 1, reception time division number) in communication transmission method 1, and then transmits a card address request (card address request communication transmission) in communication transmission method 2. Method 2,
(Reception start time 2, reception time division number). The card reader / writer 1 receives the response signal from the wireless card 10 at the same time for the two communication transmission methods 1 and 2 after the card address request of the communication transmission method 2 is completed.

The control circuit 2 includes a plurality of wireless cards 1
In order to be able to receive the response signal from 0, the time for receiving the response signal from the wireless card 10 is divided into a plurality of times.
Here, this time is divided into four time divisions, which are referred to as time division 1, time division 2, time division 3, and time division 4. When transmitting the card address request in each of the communication transmission methods (1, 2), the control circuit 2 sets the card reader / writer 1 to the wireless card 10 from the time when the respective communication transmission methods are transmitted using the timer 5. , The time until time segment 1 which is the first time segment to start receiving the response signal from, and "4" (four) which is the number of time segments are encoded and transmitted.

When each of the wireless cards 10 receives the card address request, the random number generator 15 uses the random number generator 15 as a parameter in the designated reception time interval with the card-specific numerical value and the number of times the card address request has been received as parameters. Select one time segment that occurred and respond with the card address.

If the time section selected for each wireless card 10 is different, the control circuit 2 of the card reader / writer 1 can normally receive the card address. For example, the card address of the card 4 in the reception time section 1 and the card address of the card 1 in the reception time section 2 in FIG.

However, the control circuit 2 of the card reader / writer 1 cannot normally receive the card address when different wireless cards 10,... Select the same time section at the same time. For example, the card address of the card 2 and the card address of the card 3 in the reception time section 4 in FIG. At this time, the control circuit 2 performs the card address request operation of the communication transmission method 1 and the communication transmission method 2 again.

Therefore, when the card address is transmitted simultaneously from a plurality of wireless cards 10 and it is impossible to read data from the wireless card 10 in many time segments, the control circuit 2 sets a time for encoding into the card address request. By performing the card address request by increasing the number of sections and the number of time sections for receiving the card address, the probability of collision of the card addresses can be reduced.

When the card reader / writer 1 is
, A signal for designating a card address to stop the response operation of the wireless card 10 is transmitted, and when the wireless card 10 having the designated card address normally receives the signal, the wireless card 10 Then, the response of the card address to the card address request is stopped. As a result, the number of wireless cards 10 responding to the card address is reduced to avoid collision.

In each time section, the control circuit 2
Receives the communication transmission method 1 and the communication transmission method 2 at the same time, and selects a response signal that has been successfully received. When transmitted simultaneously from wireless cards 10 having different communication transmission methods,
Although it can be treated as a collision, the probability of a collision is reduced when reception is normally performed at the same time, and the time until all wireless cards 10 are read can be reduced. For example, when the card address of the card 2 in the reception time section 4 in FIG. 3 is the communication transmission method 1 and the card address of the card 3 is the communication transmission method 2, that is, the communication transmission methods of the card 2 and the card 3 are different. Otherwise, normal reception is possible.

After successfully receiving the card address, the control circuit 2 of the card reader / writer 1 performs wireless communication with the wireless card 10 specified by the card address, and uses a temporary number shorter in length than the card address. By assigning a certain node address to the wireless card 10, the communication time with the wireless card 10 is reduced.

As described above, according to the embodiment of the present invention, it is possible to shorten the communication time by performing only the interrogation in a plurality of communication transmission schemes sequentially and receiving them simultaneously.

Further, it is possible to specify the time of reception after the interrogation and to make an interrogation only by any necessary communication transmission method, thereby shortening the communication time. Further, when it is assumed that there are a plurality of wireless cards in the communication area, the time for receiving a response to the call is divided into a plurality of parts, and the number of divisions is notified so that a plurality of wireless cards can be read simultaneously. Even in such a case, it is possible to reduce the possibility of data collision by preventing unnecessary communication time according to the scale of the system.

Further, the number of divisions of the time for receiving the response is changed according to the collision rate of the received data, and the communication time can be reduced by setting the optimal number of time divisions.

[0037]

As described in detail above, according to the present invention,
Wireless card system, wireless card communication method, information processing system, and information capable of shortening communication time and reducing collision of response data in wireless communication with wireless cards of a plurality of communication transmission schemes in a communication area A communication method for a processing system can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a wireless card system according to the present invention.

FIG. 2 is a diagram showing a configuration example of a card address request according to the present invention.

FIG. 3 is a timing chart for explaining an operation of receiving a card address.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Card reader / writer 2, 13 ... Control circuit 3 ... Transmission circuit 4 ... Receiving circuit 5, 16 ... Timer 6 ... Transmission antenna coil 8 ... Receiving antenna coil 10 ... Wireless card 11 ... Transmission / reception antenna coil 12 ... Modulation / demodulation circuit 14 ... Memory 15 Random number generator 100 Host computer

Claims (10)

[Claims] 1. A non-contact information recording medium on which various types of information are recorded, and a non-contact information processing apparatus for reading and writing information from and to the non-contact information recording medium in a non-contact manner. In the information processing system, when the non-contact information recording device starts the non-contact information recording medium, reception start for starting reception of response information transmitted from the non-contact information recording medium in accordance with activation information to be transmitted An information processing apparatus comprising: encoding means for encoding time; and transmitting means for transmitting activation information including the reception start time encoded by the encoding means to the contacted information recording medium. system. 2. A wireless card system comprising: a plurality of wireless cards in which a plurality of different communication transmission systems coexist; and an information processing apparatus for reading and writing information by wireless communication with the plurality of wireless cards. When the information processing apparatus activates the wireless card, the transmitting unit sequentially transmits an activation signal for each of the different communication transmission schemes. The transmission unit sequentially transmits the activation signal for each of the different communication transmission schemes. A receiving means for simultaneously receiving a response signal from a transmission-type wireless card, the wireless card system comprising: 3. A wireless card system comprising: a plurality of wireless cards; and an information processing device that reads and writes information by wireless communication with the plurality of wireless cards, wherein the information processing device includes: At the time of activation, encoding for encoding a reception start time at which reception of a response signal from the wireless card according to an activation signal to be transmitted is started, and a division number obtained by dividing a predetermined reception time from the reception start time into a plurality of divisions. Means, and first transmitting means for transmitting an activation signal including the reception start time encoded by the encoding means and the number of divisions of the predetermined reception time to the wireless card, the wireless card comprising: When the activation signal transmitted from the first transmission means is received, one of the reception times divided from the encoded reception start time and the division number of the predetermined reception time included in the activation signal is one of the reception times.
A wireless card system comprising: a selection unit that selects one of the reception times; and a second transmission unit that transmits a response signal to the information processing apparatus at the reception time selected by the selection unit. 4. A wireless card system comprising: a plurality of wireless cards; and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards, wherein the information processing device includes: At the time of activation, a division unit that divides a predetermined reception time from a reception start time at which reception of a response signal from the wireless card according to the activation signal to be transmitted is started into a plurality of divisions, and a predetermined reception time divided by the division unit. Encoding means for encoding the number of divisions and the reception start time; transmitting an activation signal including the number of divisions of the predetermined reception time and the reception start time encoded by the encoding means to the wireless card; And a plurality of response signals transmitted from the plurality of wireless cards in response to the activation signal transmitted by the first transmitting means in one of the divided reception times. Control means for controlling the number of divisions of the predetermined reception time to be divided by the division means according to the number of reception times during which the plurality of response signals are received. When receiving the activation signal transmitted from the first transmitting means, one of the reception times divided from the encoded reception start time and the division number of the predetermined reception time included in the activation signal is included.
A wireless card system comprising: a selection unit that selects one of the reception times; and a second transmission unit that transmits a response signal to the information processing apparatus at the reception time selected by the selection unit. 5. A wireless card system comprising: a plurality of wireless cards in which a plurality of different communication transmission methods are mixed; and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards. When the information processing apparatus activates the wireless card, dividing means divides a predetermined reception time from a reception start time at which reception of a response signal from the wireless card according to the activation signal to be transmitted is started into a plurality of pieces, Encoding means for encoding the number of divisions of the predetermined reception time divided by the means and the reception start time; and an activation signal including the number of divisions of the predetermined reception time and the reception start time encoded by the encoding means. A first transmitting means for sequentially transmitting each of the different communication transmission methods; and a starting signal for sequentially transmitting the activation signal for each of the different communication transmission methods by the first transmitting means. Receiving means for simultaneously receiving a response signal from a wireless card of each communication transmission method, and when the wireless card receives the activation signal transmitted from the first transmitting means, the encoded signal included in the activation signal Of the reception time divided from the reception start time and the division number of the predetermined reception time
Selecting means for selecting one of the receiving times, and second transmitting means for transmitting a response signal to the information processing apparatus by a communication transmission method specific to the receiving time selected by the selecting means. Wireless card system. 6. A non-contact information recording medium on which various types of information are recorded, and a non-contact information processing apparatus for reading and writing information from and to the plurality of non-contact information recording media in a non-contact manner. A communication method for an information processing system, comprising: when the non-contact information processing device starts up the non-contact information recording medium, receiving response information transmitted from the non-contact information recording medium in accordance with start information to be transmitted. A communication method for an information processing system, wherein a reception start time to start is encoded, and start information including the encoded reception start time is transmitted to the contacted information recording medium. 7. A communication method for a wireless card system comprising: a plurality of wireless cards in which a plurality of different communication transmission methods are mixed; and an information processing apparatus for reading and writing information by wireless communication with the plurality of wireless cards. When the information processing device activates the wireless card, the activation signal is sequentially transmitted for each of the different communication transmission methods, and after sequentially transmitting the activation signal for each of the different communication transmission methods, A communication method for a wireless card system, wherein response signals from wireless cards are simultaneously received. 8. A communication method for a wireless card system including a plurality of wireless cards and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards, wherein the information processing device is When activating the wireless card, a reception start time at which reception of a response signal from the wireless card according to a start signal to be transmitted is started, and a division number obtained by dividing a predetermined reception time from the reception start time into a plurality are described. And transmitting an activation signal including the encoded reception start time and the number of divisions of the predetermined reception time to the wireless card. When the wireless card receives the activation signal transmitted from the information processing device, the activation is performed. One of the divided reception times is selected from the encoded reception start time and the number of divisions of the predetermined reception time included in the signal, and the selected reception time is set to the selected reception time. Communication method for a radio card system is characterized in that so as to transmit a response signal to the broadcast processing apparatus. 9. A communication method for a wireless card system comprising a plurality of wireless cards and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards, wherein the information processing device is When activating the wireless card, a predetermined reception time from a reception start time at which reception of a response signal from the wireless card according to an activation signal to be transmitted is divided into a plurality of divisions, and the number of divisions of the divided predetermined reception time And the reception start time, and transmits an activation signal including the encoded number of divisions of the predetermined reception time and the reception start time to the wireless card, and according to the transmitted activation signal, When a plurality of response signals transmitted from the wireless card are received in one of the divided reception times, the predetermined reception time is determined according to the number of reception times during which the plurality of response signals are received. When the wireless card receives the start signal transmitted from the information processing device, the wireless card receives the start signal transmitted from the information processing apparatus, and performs division based on the encoded reception start time included in the start signal and the division number of the predetermined reception time. A communication method for a wireless card system, wherein one of the selected reception times is selected, and a response signal is transmitted to the information processing apparatus at the selected reception time. 10. A communication method for a wireless card system including a plurality of wireless cards in which a plurality of different communication transmission schemes coexist, and an information processing device for reading and writing information by wireless communication with the plurality of wireless cards. When the information processing device activates the wireless card, a predetermined reception time from a reception start time to start receiving a response signal from the wireless card in accordance with the activation signal to be transmitted is divided into a plurality of reception times. Encoding the number of divisions of the divided predetermined reception time and the reception start time, sequentially transmits a start signal including the encoded number of divisions of the predetermined reception time and the reception start time for each of the different communication transmission schemes, After sequentially transmitting start signals for each of the different communication transmission methods, response signals from wireless cards of each communication transmission method are simultaneously received from the reception start time, When receiving the start signal transmitted from the information processing device, when the reception time is one of the reception times divided from the encoded reception start time and the division number of the predetermined reception time included in the start signal, A communication method for a wireless card system, comprising selecting and transmitting a response signal to the information processing device in a communication transmission method specific to the selected reception time.