Contactless storage medium and processing unit for contactless storage medium

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Industrial application field]

The present invention relates to a non-contact storage medium and a non-contact storage medium processing device that are used for ticket gate processing of electric railway stations, component discrimination processing in factory automation, and wirelessly transmit and receive data to and from each other by a command / response method.

【0002】

[Conventional technology]

When data is transmitted / received between a non-contact storage medium that stores data for passability determination and a non-contact storage medium processing device that performs passability determination processing, as shown in FIG. 10, the medium and the processing device Some of them send and receive data by command / response method. That is, a communication reception command is transmitted from the processing device (n101), a communication request response is transmitted from the non-contact storage medium to this communication reception command (n122), and a data read command is sent from the processing device that has received the communication request response. Is sent (n104). The medium that receives this data read command transmits the communication data stored in its own memory, and the processing device executes processing based on the received data (n108). Furthermore, if there is data to be written on the medium, a write command is sent (n109), and the medium that receives this sends the write completion response after writing the write data to the memory (n126 to n128). The processing device receives the write completion response transmitted from the medium and terminates the communication.

【0003】

By the way, the size of the communicable range between the non-contact storage medium and the non-contact storage medium processing device is determined by the size of the electromagnetic coupling of each antenna coil. When this antenna coil is horizontally fixed in the non-contact storage medium processing device, a communication area 32 called a side lobe is generated in addition to the original communication area 31 as shown in FIG. When the non-contact storage medium passes through the communication area thus generated in the direction indicated by the arrow X in the figure, the direction of the magnetic field is reversed between the side lobe 32 and the original communication area 31, so that communication is performed. Communication is lost when passing between area 31 and side lobe 32. Further, when the power supply of the non-contact storage medium is supplied from the processing device by electromagnetic induction, the supply of this power supply is also interrupted. As described above, if communication becomes impossible or the supply of power to the medium is interrupted after the data transmission / reception is started once, the communication is interrupted and the processing device cannot process the medium.

【0004】

Therefore, in the conventional processing device, when the read data and the write completion response are not received for more than a certain period of time (t2, t3) after the read command is transmitted and the write command is transmitted in the above processing procedure. The read command is sent and the write command is sent three times in succession (n107, n112). In this way, when the data or response to be transmitted from the medium is not received, the interrupted communication can be resumed by continuously transmitting the corresponding command a predetermined number of times.

【0005】

If the communication is not restored even by retransmitting the command data after the interruption, the communication process is restarted from the beginning after waiting for the transmission of the communication reception command. This is because the medium moves to the processing device installed at the fixed position, so that the medium does not always exist in the communication area until the communication processing is completed, and the communication is interrupted. This is because it is not guaranteed that the used medium returns to the communication area of the same processing device and continues the communication processing. Therefore, in the non-contact storage medium that receives power from the processing device, even if the power is interrupted during communication, the communication processing is restarted from the beginning when the power is turned on again.

【0006】

[Problems to be Solved by the Invention]

However, in the conventional non-contact storage medium, the processing device may perform the above-mentioned command data retransmission processing even when the medium is in a state of waiting for a communication reception command after the communication is interrupted. In such a case, the communication reception command is not transmitted from the processing device until the predetermined number of retransmission processes are completed, and as shown in FIG. 11, the medium must wait for the transmission of the reception command for a long time. In the meantime (n135 to n141), the data transmission / reception processing is not restarted during this period, and the processing operation may not be completed before the non-contact storage medium passes through the communicable range of the processing device. During this period, it is not possible to perform communication processing with other non-contact storage media, and there is a problem that the processing operation cannot be performed efficiently.

【0007】

An object of the present invention is to be able to quickly resume the communication related to the interruption without retransmitting the command from the processing device when the communication is interrupted, and to execute the communication processing with another non-contact storage medium. It is an object of the present invention to provide a non-contact storage medium and a non-contact storage medium processing apparatus capable of producing the same.

【0008】

[Means for solving problems]

The non-contact storage medium according to the invention according to claim 1 transmits a communication request response when receiving a communication reception command transmitted from the non-contact storage medium processing device, and when receiving a data reading command, communication data. In the non-contact storage medium that transmits the data and executes the communication operation, the identification data determination means for determining whether or not the identification data included in the received communication reception command matches the own identification data, and the identification data determination means. It is characterized in that a communication operation restarting means for starting a communication operation based on the status data included in the communication reception command when the identification data matches is provided.

【0009】

The non-contact storage medium processing device according to claim 2 transmits a communication reception command, transmits a data read command when receiving a communication request response transmitted from the non-contact storage medium, and is based on the received communication data. In the non-contact storage medium processing device that executes the processing operation, when the communication with the non-contact storage medium is interrupted, the identification data for identifying the non-contact storage medium related to the interrupted communication and the status for specifying the state at the time of interruption are specified. When a communication request response from a non-contact storage medium is received for a specific communication reception means that sends a communication reception command containing data and a communication reception command sent by the specific communication reception means, the processing operation is performed from the state at the time of interruption. It is characterized in that a processing operation restarting means for restarting is provided.

【0010】

The non-contact storage medium according to claim 3 transmits a communication request response when receiving a communication reception command transmitted from the non-contact storage medium processing device, and transmits communication data when receiving a data read command. In the non-contact storage medium that executes the communication operation, the identification data determination means for determining whether or not the identification data included in the received communication reception command is the identification data for identifying the interrupted communication process, and the identification data determination means. When the identification data included in the received communication reception command is the identification data that identifies the interrupted communication process, the communication operation restart means for starting the communication operation based on the status data included in the communication reception command is provided. It is characterized by that.

【0011】

The non-contact storage medium processing device according to claim 4 transmits a communication reception command, transmits a data read command when receiving a communication request response transmitted from the non-contact storage medium, and is based on the received communication data. In the non-contact storage medium processing device that executes the processing operation, when the communication with the non-contact storage medium is interrupted, the communication reception including the identification data that identifies the interrupted communication process and the status data that identifies the state at the time of interruption. When a communication request response from a non-contact storage medium is received for a specific communication reception means for transmitting a command and a communication reception command transmitted by the specific communication reception means, the processing operation is restarted from the interrupted state. It is characterized by providing means and.

【0012】

The non-contact storage medium processing device according to the invention according to claim 5 is such that the specific communication receiving means transmits a communication receiving command at a certain time after the communication is interrupted.

【0013】

The non-contact storage medium processing device according to the invention according to claim 6 has a communication reception command until the specific communication reception means receives a communication request response from another non-contact storage medium after the communication is interrupted. Is sent.

【0014】

The non-contact storage medium according to claim 7 transmits a communication request response when receiving a communication reception command transmitted from the non-contact storage medium processing device, and transmits communication data when receiving a data read command. In the non-contact storage medium that executes the communication operation, the timer means that starts when the communication with the non-contact storage medium processing device is interrupted to measure a fixed time, and while the timer means measures a fixed time. It is characterized in that a communication operation restarting means for starting a communication operation based on the status data included in the communication reception command when the communication reception command is received is provided.

【0015】

The non-contact storage medium processing device according to the invention according to claim 8 transmits a communication reception command, transmits a data read command when receiving a communication request response transmitted from the non-contact storage medium, and receives communication. In the non-contact storage medium processing device that executes the processing operation based on the data, the identification code included in the communication request response received after the communication with the non-contact storage medium is interrupted identifies the non-contact storage medium related to the interrupted communication. An identification code discriminating means for determining whether or not the code matches the code, and a processing operation continuation means for continuously executing the processing operation related to the interrupted communication when both identification codes match in the identification code discriminating means are provided. It is characterized by that.

【0016】

The non-contact storage medium processing device according to the invention according to claim 9 is such that the identification code discriminating means discriminates the matching of the identification codes at a predetermined time after the communication is interrupted.

【0017】

The non-contact storage medium processing device according to claim 10 determines that the identification code discriminating means matches the identification code between the time when the communication is interrupted and the time when the communication request response from another non-contact storage medium is received. It is something that I tried to do.

【0018】

[Action]

In the non-contact storage medium of the invention according to claim 1, when the identification data included in the communication reception command transmitted from the non-contact storage medium processing device matches its own identification data, it is included in the communication reception command. Communication operation is started based on the status data. Therefore, when the communication operation is interrupted, the communication operation is restarted from the interrupted state according to the instruction of the communication reception command received next.

【0019】

In the non-contact storage medium processing device of the invention according to claim 2, when communication is interrupted, a communication reception command including identification data for identifying the non-contact storage medium related to the communication and status data for specifying the state at the time of interruption is issued. When it is transmitted and a communication request response from the non-contact storage medium for this communication reception command is received, the processing operation is restarted from the state at the time of interruption. Therefore, when the non-contact storage medium related to the interrupted communication exists in the communicable range, the communication with the non-contact storage medium is restarted, and the processing operation executed before the interruption is continuously executed.

【0020】

In the non-contact storage medium of the invention described in claim 3, when the identification data included in the communication reception command transmitted from the non-contact storage medium processing device is the identification data that identifies the interrupted communication process, the communication reception is performed. Communication operation is started based on the status data included in the command. Therefore, when the communication operation is interrupted, the communication operation is restarted from the interrupted state according to the instruction of the communication reception command received next.

【0021】

In the non-contact storage medium processing apparatus of the invention according to claim 4, when communication is interrupted, a communication reception command including identification data for identifying the communication process and status data for specifying the state at the time of interruption is transmitted, and this communication is performed. When a communication request response from the non-contact storage medium for the reception command is received, the processing operation is restarted from the state at the time of interruption. Therefore, when the non-contact storage medium related to the interrupted communication exists in the communicable range, the communication with the non-contact storage medium is restarted, and the processing operation executed before the interruption is continuously executed.

【0022】

In the non-contact storage medium processing apparatus of the invention according to claim 5, a communication reception command including identification data and status data is transmitted within a certain period of time after the communication is interrupted. Therefore, after a lapse of a certain period of time, a normal communication reception command is transmitted, and the communication operation and the processing operation are executed from the beginning regardless of whether or not the communication is a non-contact storage medium related to the interrupted communication.

【0023】

The non-contact storage medium processing device according to the invention according to claim 6 is a non-contact storage medium related to the interrupted communication until a communication request response from another non-contact storage medium is received after the communication is interrupted. A communication reception command is sent to. Therefore, when another non-contact storage medium invades the communicable range after the communication is interrupted, the processing operation for this non-contact storage medium is preferentially performed.

【0024】

In the non-contact storage medium according to the invention described in claim 7, when a communication reception command is received within a certain period of time after the communication is interrupted, communication is performed based on the status data included in the communication reception command. Start operation. Therefore, when a communication reception command transmitted from the non-contact storage medium processing device is received within a certain period of time from the time of interruption, the interrupted communication operation is resumed from the state instructed by the communication reception command, and the interrupted communication is resumed. An identification code for identifying the non-contact storage medium involved in the processing becomes unnecessary.

【0025】

The non-contact storage medium processing device according to the invention according to claim 8 is when the identification code included in the communication request response received after the interruption of communication matches the identification code of the non-contact storage medium related to the interrupted communication. , The processing operation related to the interrupted communication is continuously executed. Therefore, when the non-contact storage medium that transmitted the communication request response to the communication reception command transmitted after the interruption is related to the interrupted communication, the processing operation executed before the interruption is continuously executed.

【0026】

The non-contact storage medium processing device according to the invention according to claim 9 determines whether or not the identification code included in the communication request response matches the identification code of the non-contact storage medium related to the interrupted communication after the interruption. It is executed only within the specified time of. Therefore, after a lapse of a predetermined time, communication with another non-contact storage medium becomes possible.

【0027】

The non-contact storage medium processing device according to the invention according to claim 10 determines whether or not the identification code included in the communication request response matches the identification code of the non-contact storage medium related to the interrupted communication after the interruption. It is executed only until the identification data of the other non-contact storage medium is received. Therefore, when another non-contact storage medium invades the communicable range, communication with the non-contact storage medium is prioritized.

【0028】

[Example]

FIG. 1 is a block diagram of a control unit of a non-contact storage medium according to an embodiment of the present invention. The non-contact storage medium 21 is, for example, a commuter pass carried by a user passing through an automatic ticket gate. A transmission / reception circuit 27 is connected to the CPU 20 provided with the ROM 23 and the RAM 24 via the interface circuit 25. The transmission / reception circuit 27 includes an antenna 29, and wirelessly transmits / receives data to / from the non-contact storage medium processing device 1 described later via the antenna 29. The non-contact storage medium 21 is composed of an IC card, and each circuit of the IC card is supplied with electric power by a power carrier wave transmitted from the non-contact storage medium processing device 1. Therefore, the power supply circuit 28 is connected to the transmission / reception circuit 27, and the power component of the power carrier wave received by the antenna 29 is supplied to the power supply circuit 28.

【0029】

The CPU 22 executes communication processing according to a program written in advance in the ROM 23. The data input / output during this period is stored in the RAM 24, and some data is written in the EEPROM 26. The data written to the FFP ROM 26 includes identification data unique to the card, passability determination data such as a passable section and an expiration date, and the like.

【0030】

FIG. 2 is a block diagram of a control unit for non-contact storage medium processing according to an embodiment of the present invention. The non-contact storage medium processing device 1 is provided in, for example, an automatic ticket gate. The CPU 2, which constitutes the control unit of the non-contact storage medium processing device 1, includes ROM 3 and RAM 4. The CPU 2 is connected to a main CPU such as an automatic ticket gate that constitutes a passgate system via an interface circuit 5 and a communication control circuit 9.

【0031】

Further, the transmission / reception control circuit 10 is connected to the CPU 2 via the interface circuit 6. The transmission / reception control circuit 10 includes an antenna 14, and wirelessly transmits / receives data to / from the non-contact storage medium 21 via the antenna 14. A program that regulates the processing operation of CPU2 related to wireless transmission / reception of this data is written in ROM3 in advance. The CPU 2 transmits / receives data by the transmission / reception control circuit 10 according to this program. The data input / output in this data transmission / reception process is temporarily stored in a predetermined memory area of the RAM 4.

【0032】

3 and 4 are flowcharts showing a processing procedure of the non-contact storage medium processing device and the control unit of the non-contact storage medium according to the first embodiment of the present invention. CPU2 of the non-contact storage medium processing device 1 transmits a reception command at intervals of t1 for a certain period of time in a standby state, and waits for transmission of a communication request response from the non-contact storage medium 21 (n1 to n3). When the non-contact storage medium 21 invades the communicable area of the antenna 14 and the non-contact storage medium 21 that has received the reception command sends a communication request response, the CPU 2 receives this and sends a read command ( n4).

【0033】

After that, when the read data transmitted from the non-contact storage medium 21 is received within t2 for a certain period of time, data processing based on the read data is performed (n6, n7). This data processing is, for example, a passability determination process in a passgate system. Then, if necessary, a write command including write data is transmitted (n8), and when a write completion response is received within t3 for a certain period of time, the state returns to the standby state (n8 to n10). The above processing of n1 to n10 shows a case where the data communication processing by the command / response method with the non-contact storage medium 21 is properly performed without interruption.

【0034】

On the other hand, if the data communication process with the non-contact storage medium 21 is interrupted after the transmission of the read command, the CPU 2 of the non-contact storage medium processing device 1 cannot receive the read data within t2 for a certain period of time. The reception command C4 shown in 5 is continuously transmitted within t2 for a certain period of time (n11 to n15). As shown in FIG. 5, as attached data to the reception command C4, the ID number which is the identification data of the non-contact storage medium 21 related to the interrupted communication process, the status data indicating the read process executed when the communication is interrupted, and the read. Contains data that represents the type of data.

【0035】

The CPU 22 of the non-contact storage medium 21 that has received this reception command C4 determines whether or not the ID number and status data included in the reception command C4 match its own ID number and the processing content that was being executed at the time of interruption. (N42, n50). If the communication process is interrupted while receiving the read command transmitted from the non-contact storage medium processing device 1, the status data included in the reception command C4 represents the read process, and the CPU 22 proceeds to n45. The normal processing operation is executed from reading the data from the EEPROM 26 and transmitting the data (n45 to n49).

【0036】

If an interruption occurs during the writing process from the non-contact storage medium processing device 1, the CPU 2 of the non-contact storage medium processing device 1 continuously transmits the reception command C5 within t3 for a certain period of time (n17 to n21). ). As shown in FIG. 5, the reception command C5 includes the ID number of the non-contact storage medium 21 related to the interrupted communication process, the status data representing the write process, and the write data as attached data. When the non-contact storage medium 21 receives the reception command C5, it checks the ID number and status data, and then performs the writing process of the writing data (n51, n53 n48).

【0037】

The communication request response transmitted from the non-contact storage medium 21 in n52 and n53 is the response R4 shown in FIG. 5, and is a flag indicating that the writing process is continued together with the ID number of the non-contact storage medium 21 as attached data. Is included.

【0038】

As described above, in this embodiment, the non-contact storage medium processing device 1 transmits a reception command according to the processing operation at the time of interruption together with the ID number of the non-contact storage medium 21 related to the interrupted communication processing. The non-contact storage medium 21 related to the interrupted communication process can be specified by the reception command including this ID number, and the communication process can be continuously performed from the interrupted processing operation.

【0039】

If an interruption occurs during the writing process, the reception command transmitted by n18 in the non-contact storage medium processing device 1 does not include the write data and is transmitted from the non-contact storage medium 21 that has received this reception command. The write data may be transmitted after receiving the communication request response R4 (see FIG. 5) including the write continuation flag. By separating the communication request response and the write command in this way, it is possible to shorten the transmission interval of the reception command when the write processing time becomes long due to a large amount of write data or the like. When a medium other than the non-contact storage medium 21 related to the interrupted communication processing invades the communicable area, the processing for this medium is not delayed.

【0040】

Further, the identification data exchanged between the non-contact storage medium processing device 1 and the non-contact storage medium 21 is not limited to the ID number of the non-contact storage medium 21. For example, as in the reception command C11 shown in FIG. 6, a reception command including the device number assigned to the processing device and the transmission time of the reception command as identification data is transmitted.

【0041】

This device number is assigned different contents for each non-contact storage medium processing device 1. The time consists of the date (year, month, day) and time (hour, minute, second) at the time of transmission. The ID numbers included in the reception commands C12 and C13 (see Fig. 6) transmitted after the communication is interrupted are also configured in the same manner. The non-contact storage medium 21 stores the ID number included in the reception command and compares it with the ID number included in the reception command transmitted after the interruption. In this comparison, when the device numbers constituting the ID numbers are the same and the transmission times have a predetermined time difference, it is determined that the ID numbers match.

【0042】

By doing so, when the passing speed of the non-contact storage medium 21 with respect to the communication area is relatively low and there is no problem even if it takes some time for the communication process, the identification data of the non-contact storage medium 21 can be stored. Transmission and reception can be eliminated, and communication processing can be simplified. In addition, by including the ID number set in the non-contact storage medium 21 in the reception commands C12 and C13 after the communication is interrupted, continuous processing is ensured only for the non-contact storage medium 21 related to the communication processing in which the interruption occurs. Can be done.

【0043】

Further, when the communication is interrupted, the non-contact storage medium processing device 1 accepts the communication processing from both the non-contact storage medium related to the communication processing interrupted within a predetermined time and another non-contact storage medium. The non-contact storage medium 21 may perform the continuation process only when the reception command is received within the predetermined time after the interruption, and may restart the communication process from the beginning after the predetermined time has elapsed. By doing so, it is not necessary to send and receive the ID number, and the communication processing time can be shortened. In this case, the non-contact storage medium 21 is provided with the timer circuit shown in FIG. 7 so that power can be supplied to each internal device for a certain period of time even after the power supply from the non-contact storage medium processing device 1 is cut off. Need to be. However, as shown in FIG. 8, the processing of the CPU 22 of the non-contact storage medium 21 is to send a communication request (n64), read and send data (n65, n66), and write data and write data according to the received command. It is only necessary to execute the transmission of the write completion response (n67, n68), and it is not necessary to send / receive the ID code and perform the match determination, and the communication process can be extremely simplified.

【0044】

[Effect of the invention]

According to the first and second aspects of the invention, after the communication processing is interrupted, the non-contact storage medium related to the interrupted communication is based on the identification data included in the communication reception command transmitted from the non-contact storage medium processing device. Can be specified, and the status at the time of interruption can be specified by the status data also included in the communication reception command, the interrupted communication processing can be continued accurately, and the read command and write command can be specified at the time of interruption. There is an advantage that it is possible to eliminate the process of transmitting command data such as, etc. multiple times, and it is possible to improve the lengthening of communication processing and the resulting decrease in communication processing efficiency.

【0045】

According to the third and fourth aspects of the invention, after the communication processing is interrupted, the interrupted communication processing can be identified by the identification data included in the communication reception command transmitted from the non-contact storage medium processing device. At the same time, the status data included in the communication reception command can be used to identify the state at the time of interruption, the interrupted communication process can be continued accurately, and command data such as read command and write command can be output at the time of interruption. There is an advantage that the process of transmitting a plurality of times can be eliminated, and the communication process can be lengthened and the communication process efficiency can be improved.

【0046】

According to the invention described in claim 5, since the communication reception command relating to the resumption of the interrupted communication is transmitted only for a certain period of time after the interruption of the communication, the communication process does not become unnecessarily long. Subsequently, new communication processing can be performed on another non-contact storage medium that has invaded the communicable range, and there is an advantage that the communication processing efficiency can be improved.

【0047】

According to the invention of claim 6, since the communication reception command relating to the resumption of the interrupted communication is transmitted only until the communication request response from the other non-contact storage medium is received, the communicable range If another non-contact storage medium intrudes into the media, the communication processing is preferentially performed with the media, so that there is an advantage that the communication processing efficiency can be improved.

【0048】

According to the invention described in claim 7, the communication reception command is received at a certain time after the interruption, and the communication operation is started based on the status data included in the communication reception command. It is possible to simplify the transmission / reception processing and shorten the time by eliminating the need for transmission / reception of identification data for identifying the contact storage medium and its suitability determination processing.

【0049】

According to the invention described in claim 8, the non-contact storage medium related to the interrupted communication is specified by the identification code included in the communication request response transmitted from the non-contact storage medium, and the processing operation related to the interrupted communication is performed. It can be done continuously. Therefore, the non-contact storage medium does not need to perform a special processing operation in order to resume the interrupted communication, and has an advantage that the processing procedure of the non-contact storage medium can be simplified.

【0050】

According to the invention of claim 9, since the interrupted communication is resumed by specifying the non-contact storage medium only at a predetermined time after the communication is interrupted, another non-contact that subsequently invades the communicable range. Communication to the storage medium can be performed normally from the beginning of the processing operation.

【0051】

According to the invention described in claim 10, since the interrupted communication is resumed after the communication is interrupted until the other non-contact storage medium enters the communicable range, the other non-contact storage medium is prioritized. Can be processed.

[Simple explanation of drawings]

[Figure 1]

It is a block diagram which shows the structure of the control part of the non-contact storage medium which is an Example of this invention.

[Figure 2]

It is a block diagram which shows the structure of the control part of the non-contact storage medium processing apparatus which is an Example of this invention.

[Fig. 3]

It is a flowchart which shows the processing procedure of the control part of the non-contact storage medium processing apparatus.

[Fig. 4]

It is a flowchart which shows the processing procedure of the control part of the non-contact storage medium.

[Fig. 5]

It is a figure which shows the structure of the command data and the response data which are transmitted and received in the non-contact storage medium and the non-contact storage medium processing apparatus.

[Fig. 6]

It is a figure which shows the structure of the command data and the response data which are transmitted and received in the non-contact storage medium and the non-contact storage medium processing apparatus which concerns on another Example of this invention.

[Fig. 7]

It is a figure which shows the structure of the timer circuit provided in the non-contact storage medium which concerns on still another Example of this invention.

[Fig. 8]

It is a flowchart which shows the processing procedure of the control part of the non-contact storage medium.

[Fig. 9]

It is a figure which shows the passing state of the non-contact storage medium with respect to the communicable range of a general non-contact storage medium processing apparatus.

[Fig. 10]

It is a flowchart which shows the processing procedure in the conventional non-contact storage medium and non-contact storage medium processing apparatus.

[Fig. 11]

It is a flowchart which shows the processing procedure at the time of communication interruption in the conventional non-contact storage medium.

[Explanation of symbols]

1-Non-contact storage medium processing device 14-Antenna 21-Non-contact storage medium 29-Antenna