JPH0676121A - Information processor using data carrier - Google Patents

Abstract

PURPOSE:To provide an information processor which uses a data carrier used as a coupon ticket, etc., and can attain the correct data processing in the next time even if an error occurs in a rewriting state of a flag area showing the valid one of both data. CONSTITUTION:A memory 23 of a data carrier 20 includes two data areas 30 and 40 and a flag area 24 which stores the pointer information 25 including a check point 26 showing the valid one of both areas 30 and 40. Receiving an access request, a flag area reading part 13 of a reader/writer 10 reads the area 24. When a checking part 14 decides that an error is caused by the rewriting of the area 24 in the precedent time, a data correcting part 16 reads the data A and B out of both areas 30 and 40 and decides the valid one of both data. Then the part 16 corrects the data on the area 24 based on the decided valid data and then instructs a data reading/writing means 15 to carry out the ordinary processing of the valid data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device using a data carrier used as a coupon.

[0002]

2. Description of the Related Art In recent years, it has been considered to use a data carrier known as a portable and small-sized storage device capable of reading and writing information in a non-contact manner as a coupon ticket for entering a pay facility. FIG. 3 shows a conventional device, in which the reader / writer 10 is installed on the entrance gate system side, and when the user sets the data carrier 20 in the accessible area of the reader / writer 10, non-contact coupling such as electromagnetic induction is performed. Thus, the process from the reader / writer 10 to the data carrier 20 is performed.

The reader / writer 10 is provided with a control unit 11 and a transmission unit 12, and the data carrier 20 is provided with a control unit 21, a transmission unit 22 and a memory 23.
The memory 23 of the data carrier 20 is provided with two data areas 30 and 40, and further provided with a flag area 24. The flag data stored in the flag area 24 is stored in the data areas 30 and 40 by the final bit, for example. It indicates which of the data A and B that is currently valid data.

FIG. 4 shows the processing operation of the conventional apparatus. When the access request is discriminated in step S1, the flag area 24 is first read in step S2, and then step S3.
Check whether the last bit of the flag data is 0 or not.
The last bit 0 indicates that the data A is valid. Therefore, the data A is read in step S4 and the arithmetic processing is performed in step S5.
Then, the other data B is written, and finally the flag last bit is changed from 0 to 1.

When the flag final bit 1 is determined in step S3, the data B is read in step S8 and the arithmetic processing is performed in step S9. The calculation result is written in the other data A in step S10, and the final result is written. Then, the flag last bit is changed from 1 to 0. Memory 23
Data A and B alternately in different data areas 30 and 40
The reason why the processing result is stored as is is that even if the data processing fails, the correct data before that remains so that the data can be restored and the reliability is improved.

[0006]

However, in such a conventional apparatus, when an error occurs in the data A or the data B, correct data can be restored, but which of the data A and B is effective. If an error occurs when rewriting the flag area 4 indicating whether there is any, correct data cannot be processed with a probability of 1/2 in the next process.

That is, when the data carrier is used as a coupon, the error in the flag area is calculated with a probability of ½ with the probability that the number of remaining entrances stored in the memory is calculated correctly, or one error is calculated incorrectly. Will be done. Therefore, regarding a rewriting error in the flag area, it is conceivable to close the gate once and issue an alarm or the like to prompt the user to re-enter the entrance.

However, if many people are lined up and re-entering by closing the gate, it will cause more congestion. However, there is a problem that the loss due to the error occurrence in the flag area must be expected in advance when using the data carrier.

The present invention has been made in view of such conventional problems, and even if an error occurs when rewriting a flag area indicating which of the two data areas is valid, the error is corrected next time. An object of the present invention is to provide an information processing device using a data carrier capable of data processing.

[0010]

To achieve this object, the present invention is constructed as follows. First, the present invention is directed to an information processing device using a data carrier including a data carrier 20 having a writable and readable memory 23 and a reader / writer 10 for reading and writing the memory 23 of the data carrier 20.

With respect to such a device, the present invention first describes two data areas 3 in the memory 23 of the data carrier 20.
0, 40 are provided, and two data areas 30, 4 are provided.
A flag area 24 is provided which stores pointer information 25 indicating which one of 0 is valid and an inspection point 26 indicating the presence or absence of a data error. Also the data carrier 20
Includes a flag area reading means 13 for reading the flag area 24 of the memory 23 when an access request is received, an inspection means 14 for determining a flag data error from an inspection point 26 of the read flag area 24, and an inspection means 14. If it is determined that there is no error, the data read / write means 15 for reading the data area 30 or 40 designated by the pointer information 25 and processing it and then writing the processing result to the other data area, and the check means 14 are set to indicate that there is an error When it is determined, the data A and B in the two data areas 30 and 40 are read to determine valid data, the data in the flag area 25 is restored based on the valid data, and then the data read / write means 15 processes the valid data. And a data restoration means 16 for taking over the data.

Here, when the processing by the data read / write means 15 is the subtraction processing, the data restoration means 16 determines that the smaller one of the data A and B read from the two data areas 30 and 40 is the valid data. Repair process.

[0013]

According to the information processing apparatus using the data carrier of the present invention having such a configuration, even if an error occurs when rewriting the flag area indicating which of the two data areas is effective, the next time When the flag area is read, the error that occurred last time can be known from the inspection point, the pointer information can be restored to the correct pointer information, and the processing can proceed to the data area having valid data.

Therefore, for example, when a data carrier is used as a coupon ticket, even if an error occurs during rewriting of the flag area, re-entry due to gate closing, re-entry,
It is possible to improve the reliability of the entrance system using the data carrier without causing a loss for one time.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of an embodiment showing one embodiment of the present invention. In FIG. 1, a reader / writer 10 is installed at an entrance gate of a pay facility such as a ski lift or an amusement park play facility. When a user sets a data carrier 20 used as a coupon ticket within an accessible range, Execute the required coupon processing business.

The reader / writer 10 includes a control unit 11 using an MPU or the like, a transmission unit 12 for performing non-contact coupling with a data carrier 20, a flag area reading unit 13, an inspection unit 14, a data reading / writing unit and data restoration. The unit 16 is provided. The data carrier 20 also has a control unit 21, a transmission unit 22, and a memory 23. 2 in the memory 23 of the data carrier 20
One data area 30 and 40 are provided, the data stored in the data area 30 is shown as data A, and the data stored in the data area 40 is shown as data B.

A flag area 24 is provided to indicate which of the data A and B in the data areas 30 and 40 is valid. In the present invention, a pointer 25 and an inspection point 26 are provided as flag data in the flag area 24. The pointer 25 indicates the start address of the data area 30 or 40 that is currently valid. Inspection point 26
Stores information indicating whether or not an error has occurred when the flag area 24 was rewritten. For example, parity data of the address stored as the pointer 25 is stored as the check point 26.

The non-contact coupling by the transmission section 12 of the reader / writer 10 and the transmission section 22 of the data carrier 20 uses, for example, electromagnetic induction coupling. Further, the FSK modulation method is adopted as the data transmission from the reader / writer 10 to the data carrier 20, while the data transmission from the data carrier 20 to the reader / writer 10 is a spread spectrum communication method because the transmission power of the data carrier 20 is small. It is desirable to do.

Although a non-volatile memory is desirable as the memory 23 of the data carrier 20, a battery-backed RAM may be used for the one having a built-in battery. Further, the data carrier 20 may have a built-in battery, or may not have a built-in battery that rectifies a transmission signal from the reader / writer 10 to generate an operating power supply.

FIG. 2 is a flow chart showing the processing operation of the embodiment of FIG. In FIG. 2, when a user having a data carrier 20 used as a coupon ticket sets the data carrier 20 in the accessible area of the reader / writer 10 installed at the entrance gate, communication is started between the two, In S1, the reader / writer 10 side determines that there is an access request. Then, in step S2, the control unit 1
1 activates the flag area reading unit 13, and the flag area 24 of the memory 23 of the data carrier 20 is read.

The read data in the flag area is inspected by the inspection unit 14.
The inspection point 26 is decoded and it is determined whether or not an error has occurred in the previous rewriting of the flag area 24.
If there is no error, the process proceeds to step S5 and the flag area 2
In step S5, the pointer 25 obtained from 4 is decrypted,
It is determined whether the data A in the data area 30 is valid or the data B in the data 40 is valid.

When it is determined in step S6 that the data A is valid, the data read / write unit 15 reads the data A in the data area 30 in step S7, and the data A is the current remaining number of entrances in the control unit 11. Therefore, in step S8, subtraction is performed by subtracting one, and in step S9, the subtraction result is overwritten on the data B in the data area 40 and rewritten.

Subsequently, in step S3, a data area 4 indicating that the data B is valid for the flag area 24
The pointer 25 indicating the start address of 0 is changed with the inspection point 26. On the other hand, when the data B is determined to be valid data in step S6 from the pointer 25 of the flag area 24, the data B is read and subtracted by the processing of steps S10, S11, and S12, and the result is written in the data A, In step S13, the data in the flag area 24 is changed to data indicating that the data A is valid data by the pointer 25 with the inspection point 26.

On the other hand, in step S13, the flag area 24
If an error occurs due to some cause when the rewriting is performed, the process returns to step S1 and the next data carrier 20
Wait for use. When the data carrier 20 is used again after the rewriting error of the flag area 24 occurs, when the inspection point 26 is analyzed by reading the flag area 24, it is found that the rewriting error of the flag area 24 occurred last time. Yes is determined in step S4. In this case, the data recovery unit 16 of the reader / writer 10 is activated, and in step S14, the data area 30 of the memory 23,
Both data A and B of 40 are read, and step S15
To determine which is valid data.

In this embodiment, steps S8 and S
As shown in FIG. 11, since the valid data A or B read from the data carrier 20 is subtracted by one, the smaller one of the data A and B is the valid data in step S15. To determine. Then, in step S16, the pointer 25 and the inspection point 26 of the flag area 24 are generated based on the determination result of the valid data to restore the flag area 24 to correct data, and the data read / write unit 15 is subjected to normal processing. To take over. That is, in step S17, it is determined whether or not the valid data is the data A. If the data is data A, the process proceeds to step S7. If the data is data B, the process proceeds to step S10.

Of course, after the flag area has been repaired in step S16, the process may return to step S2 to perform the normal processing after repair.

[0027]

As described above, according to the present invention, when the data carrier is used as a coupon in an automatic entrance machine or an automatic ticket gate, a flag area indicating which of the two data areas is valid data. Even if the rewriting fails, if the rewriting fails, you can pass it through without closing the gate, and when you enter the next, you can know the previous error and perform the repair process to perform the correct data processing. The reliability of the entrance system using carriers can be greatly improved.

Further, since the gate is not closed when an error occurs, even if many people are lined up, the entrance can be smoothly proceeded without further congestion.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a flowchart showing the processing operation of the present invention.

FIG. 3 is an explanatory view of a conventional device.

FIG. 4 is a flowchart showing a processing operation of a conventional device.

[Explanation of symbols]

 10: reader / writer 11, 21: control unit 12, 22: transmission unit 13: flag area reading unit 14: inspection unit 15: data reading / writing unit 16: data restoration unit 20: data carrier 23: memory 24: flag area 25: pointer 26: Inspection point 30, 40: Data area

Claims (2)

[Claims] 1. An information processing apparatus using a data carrier comprising a data carrier having a writable and readable memory and a reader / writer for reading and writing the memory of the data carrier. One data area is provided, and a flag area that stores pointer information indicating whether one of the two data areas is valid and an inspection point indicating whether or not there is a data error is provided. , A flag area reading means for reading the flag area of the memory when an access request is received, an inspection means for determining a fractal data error from an inspection point of the read flag area, and the inspection means for determining no error If the data area specified by the pointer information is read and processed, the other data Data read / write means for writing a processing result to the rear, and when the inspection means determines that there is an error, the two data areas are read to determine valid data, and the data in the flag area is determined based on the valid data. An information processing apparatus using a data carrier, characterized in that the data read / write means is provided with a data restoration means for taking over the processing for valid data after restoration. 2. The information processing device using the data carrier according to claim 1, wherein the data restoration means, when the processing by the data read / write means is subtraction processing, of the data read from the two data areas, An information processing apparatus using a data carrier, characterized in that one having a smaller value is determined to be valid data and restoration processing is performed.