JP2862600B2 - Information management method for optical card - Google Patents

Description

The present invention relates to an information management method for an optical card, and more particularly to an information management method for transaction information of a prepaid card or the like.

[Conventional technology]

As a conventional information management method for an optical card, for example, as disclosed in JP-A-63-193394, a management track is provided on an optical card, and pits are recorded on the management track every time transaction information is recorded. In some cases, where the latest transaction information is recorded is managed.

[Problems to be solved by the invention]

However, in the above-mentioned conventional information management method, it is not possible to know which track the transaction information is located on which track, so that there is a problem that it takes time to search for past transaction information, and the management track is damaged. , There is a problem that it takes time to search for the latest transaction information.

As a method of managing information in a write-once medium such as an optical disk, a method of recording management information on a floppy disk, a hard disk, or the like to manage the information is known. However, in an optical card, a use place and a use device are not specified. Therefore, it is hard to apply. A method is also known in which transaction information is recorded from one of the inner and outer circumferences of an optical disk, and management information is sequentially recorded from the other one for each recording. The number of sectors is small, and information is read by reciprocating the optical card, so that it takes a long time to search.

The present invention has been made in view of the above-mentioned conventional problems, and provides an information management method for an optical card that can search for desired transaction information in a short time even if the management information recording unit is damaged. The purpose is to do.

[Means and actions for solving the problem]

In order to achieve the above object, the present invention provides a method for recording a plurality of transaction information corresponding to a plurality of transaction information recorded in a transaction information recording section of an optical card in a management information recording section of the optical card. In managing information, the plurality of management information is hierarchized, and between the two adjacent upper and lower layers, after recording the plurality of management information in the lower layer, the lower layer is stored in the upper layer. A plurality of pieces of search information extracted from each of a plurality of pieces of management information recorded in a hierarchy are recorded.

For this reason, in the preferred embodiment of the present invention, a plurality of sectors constituting the track of the optical card are provided as the same sector size in the same track, and a track having a relatively small sector size is combined with the management information recording section. In the first hierarchy lower than the management information recording unit, management information including transaction information search information recorded in the transaction information recording unit and representative information of the transaction information is recorded.
In order to manage the track of the immediately preceding layer for every predetermined number of tracks, search information of the track of the immediately preceding layer and each of the information recorded on that track are stored in the upper layers of the second and subsequent layers. The management information is hierarchized by recording management information having representative information of the management information of
Manage transaction information. The sector size is, for example, 16 bytes, 32 bytes, 64 bytes, 128 bytes, 256 bytes, 512 bytes, 1024 bytes, and the like.

With this configuration, it is possible to know which track of the immediately preceding layer should be read from the management information read from the upper layer, and thus it is possible to obtain the target information by sequentially reading the preceding layer. it can. That is, the target information can be obtained by reading the number of layers. Also,
Even when the management information of a certain layer is lost due to a scratch or the like, the management information can be recovered by reading out a predetermined number of tracks of the previous layer managed by that track.

Further, if a plurality of pieces of management information belonging to a lower hierarchy are divided by a predetermined number of pieces, for example, a track unit, and a plurality of pieces of search information are extracted from each of the plurality of pieces of management information for each section, the search can be performed. The number of tracks that have to be read for is reduced.

〔Example〕

FIG. 1 shows a configuration of an example of an optical card used in the present invention. The optical card 1 is used as a prepaid card. The optical recording section 2 is provided with a transaction information recording section 3 and a management information recording section 4, and the management information recording section 4 has first to fourth hierarchical management information recording sections. Parts 4-1 to 4-4
Is provided.

Hereinafter, the case where the transaction information is recorded as 128 bytes / sector (5 sectors / track) will be described.

As shown in FIG. 2, the transaction information recording unit 3 sets 128 bytes / sector at 5 sectors / track, sets the first to fourth sectors of each track as transaction information recording sectors, and sets the remaining fifth sector to write failure. Is a replacement sector in the case of occurrence of. The transaction information recording unit 3 determines that the total number of tracks of the optical card 1 is, for example,
In the case of 2500, 1800 of them are allocated, and each time one transaction occurs, the transaction information is sequentially written into the first to fourth sectors of the sequential tracks of the transaction information recording unit 3 and the management is performed. The information is stored in the first hierarchical management information recording section 4- of the management information recording section 4.
Record and register in one sector. As the transaction information, the date of purchase, time, item details, amount details, store name, and the like are written.

As shown in FIG. 3, the first hierarchy management information recording section 4-1 records 16 sectors / track into 16 bytes / sector, and records the first hierarchy management information in the successive sector of the sequential track. As the first hierarchy management information, as shown in FIG. 4, the track sector number (2 bytes) in which the transaction information is written, the date when the transaction occurred (3 bytes), and whether the deposit or withdrawal was made. The discrimination information (1 byte), the total amount of money generated in one transaction (4 bytes), the balance after the transaction (4 bytes), and when the sector in which the transaction information is written is defective and the replacement process is performed. And the track sector number (2 bytes) of the replacement destination.

Since the first hierarchical management information recording unit 4-1 manages 16 sectors / track, that is, 16 transactions in one track, all the transactions (7200) in the transaction information recording unit 3 including 1800 tracks are performed.
In order to manage the transaction, a 16-sector / track track is used as the first layer management information track.
Prepare 450 bottles.

After writing one track in the first hierarchical management information recording unit 4-1, the management information of the track is written to the second hierarchical management information recording unit 4-2 at that time (when the management information is written in the 16th sector). Record and register in the sector.

As shown in FIG. 5, the second layer management information recording section 4-2 records 64 bytes / sector with 8 sectors / track, and records the second layer management information in the successive sector of the track. As shown in FIG. 6, the track information of the first layer (2 bytes), the first transaction date to be managed (3 bytes),
-Th to 16th transaction dates (3 bytes each)
And the balance before the first managed transaction (4 bytes), the balance after the last managed transaction (4 bytes), and the replacement track information (6 bytes) on the replacement track.

The second layer management information recording section 4-2 stores 8 sectors / track, that is, 8 tracks / track of the first layer.
In order to manage 450 tracks on the first layer, 57 tracks of 8 sectors / track are prepared as second layer management information tracks.

After writing one track in the second hierarchical management information recording unit 4-2, at that time (when the management information is written in the eighth sector), the management information of the track is transferred to the third hierarchical management information recording unit 4-3. Record and register in the sector.

As shown in FIG. 7, the third layer management information recording section 4-3 records 8 sectors / track at 64 bytes / sector, and records the third layer management information in the successive sectors of the track. As shown in FIG. 8, the third layer management information includes the track number (2 bytes) of the second layer and the first transaction date (3 bytes) of the first sector of the track of the second layer to be managed. And the last transaction date of the first sector (3 bytes), and the second to eighth sectors
Last transaction date for each of the sectors (3 bytes each), balance before the first transaction in the first sector (4 bytes), balance after the last transaction in the eighth sector (4 bytes), replacement tracks, etc. Information (27 bytes).

The third layer management information recording section 4-3 stores 8 sectors / track, that is, 8 tracks / track of the second layer.
In order to manage 57 tracks in the second layer, 8 tracks are required as tracks for the third layer management information.
Eight tracks of sector / track are prepared.

After writing one track in the third hierarchical management information recording unit 4-3, at that time (when the management information is written in the eighth sector), the management information of the track is transferred to the fourth hierarchical management information recording unit 4-4. Record and register in the sector.

As shown in FIG. 9, the fourth hierarchy management information recording section 4-4 records 8 sectors / track at 64 bytes / sector, and records the third hierarchy management information in the sequential sectors of the track. As shown in FIG. 10, the third layer management information includes the track number (2 bytes) of the third layer and the first transaction date (first byte) managed in the first sector of the track of the third layer to be managed. 3 bytes), the last transaction date managed in the first sector (3 bytes),
Last transaction date managed in each of the second to eighth sectors (3 bytes each), and balance before the first transaction managed in the first sector (4 bytes)
And the balance (4 bytes) after the last transaction managed by the eighth sector, and information (27 bytes) on the replacement track and the like.

The fourth layer management information recording section 4-4 stores 8 sectors / track, that is, 8 tracks / track of the third layer.
One track is prepared for the management of the tracks.

As described above, the transaction information is managed in a hierarchical structure.

Hereinafter, a method of searching for transaction information will be described.

(1) Retrieval of Last Transaction Information In the retrieval of the last transaction information, first, the first sector that has not been written, in order from the fourth tier management information recording unit 4-4 to the second tier management information recording unit 4-2. By reading the track of the management information recording unit of the immediately preceding hierarchy corresponding to the second hierarchy management information recording unit 4-
The track of the first hierarchical management information recording unit 4-1 corresponding to the first sector in which No. 2 has not been written is searched. next,
By reading the track of the first hierarchy management information recording section 4-1, the transaction information corresponding to the last sector on which the track has been written is searched as the last transaction information.

If all the sectors of the track of the fourth hierarchy management information recording section 4-4 have been written, it means that the transaction information has been written to the end. In this case, the first hierarchy management information recording section 4-4 has been completed. The transaction information of the transaction information recording unit 3 corresponding to the last sector of the last track of -1 is searched as the last transaction information.

(2) Search for past transaction information In this search for past transaction information,
First, the track of the fourth hierarchical management information recording section 4-4 is read, and it is checked whether or not there is a track indicating a range including the target date. The track of the third hierarchy management information recording unit 4-3 is read, and it is similarly checked whether or not there is a track indicating a range including the target date. If there is no track indicating the range including the target date in the track of the third hierarchical management information recording unit 4-3, the second hierarchical management information recording corresponding to the first sector on which this track has not been written is performed next. The track of the section 4-2 is read, and similarly, it is checked whether or not there is a track indicating the range including the target date. If there is no track, the first hierarchical management information corresponding to the first sector which has not been written The track of the recording unit 4-1 is read. If there is no target date on the track of the first hierarchical management information recording unit 4-1, it means that the target transaction information has not been written to the optical card 1.

In the above-described reading of each layer, if there is one indicating a range including the target date, the track of the first layer management information recording unit 4 is searched by following the tracks of the younger layers one by one corresponding to the sector. The corresponding transaction track is read to search for the target transaction information.

As described above, the management information of the transaction information is hierarchized, and the transaction information recording unit 3 is provided in the first hierarchy.
And management information having transaction information search information and representative information of the transaction information recorded in the first and second layers. In order to perform management for each number, management information including search information of the track of the immediately preceding layer and representative information of each management information recorded on the track is recorded. For example, even if one of the management information, for example, one track of the third layer becomes unreadable, it can be compensated by reading the track of the second layer corresponding to the track, so that the risk level can be effectively distributed. Therefore, even if the management information recording unit 4 is damaged or the like, desired transaction information can be searched in a short time.

〔The invention's effect〕

As described above, according to the present invention, a plurality of management information corresponding to the transaction information is hierarchized, and between the two adjacent upper and lower layers, after the plurality of management information is recorded in the lower layer, The plurality of search information extracted from each of the plurality of management information recorded in the lower hierarchy is recorded in the lower hierarchy, so that even if the management information belonging to the lower hierarchy cannot be read for any reason, for example, By searching the management information from the upper hierarchy, it is possible to search for the desired transaction information in a short time.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an example of an optical card used in the present invention, FIG. 2 is a diagram showing a configuration of an example of a transaction information recording unit shown in FIG. 1, and FIG. FIG. 4 shows an example of the sector format of the first hierarchy management information recorded in the first hierarchy management information recording unit, and FIG. 5 shows the second hierarchy management shown in FIG. FIG. 6 is a diagram showing an example of the configuration of an information recording unit, FIG. 6 is a diagram showing an example of a sector format of the second hierarchy management information recorded in the second hierarchy management information recording unit, and FIG. 7 is a third diagram shown in FIG. FIG. 8 is a diagram showing an example of the configuration of a layer management information recording unit. FIG. 8 is a diagram showing an example of a sector format of the third layer management information recorded in the third layer management information recording unit. FIG. 9 is a diagram shown in FIG. FIG. 10 is a diagram showing an example of the configuration of a fourth hierarchy management information recording unit. Is a diagram illustrating an example of a sector format of the fourth hierarchical management information recorded in the layer management information recording unit. 1 optical card 2 optical recording unit 3 transaction information recording unit 4 management information recording unit 4-1 first layer management information recording unit 4-2 second layer management information recording unit 4-3... Third hierarchical management information recording unit 4-4... Fourth hierarchical management information recording unit

Continuation of front page (56) References JP-A-3-137740 (JP, A) JP-A-1-116819 (JP, A) JP-A-64-17134 (JP, A) JP-A-63-233424 (JP) JP-A-63-234480 (JP, A) JP-A-1-243285 (JP, A) JP-A-62-145590 (JP, A) JP-A-1-292690 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) G11B 27/00 G06F 17/30 G06F 12/00

Claims (3)

(57) [Claims] When managing a plurality of transaction information by recording a plurality of management information corresponding to a plurality of transaction information recorded in a transaction information recording section of the optical card in the management information recording section of the optical card, The plurality of management information is hierarchized, and between the two adjacent upper and lower hierarchies, after the plurality of management information is recorded in the lower hierarchy, the plurality of management information is recorded in the lower hierarchy in the upper hierarchy. An information management method for an optical card, comprising recording a plurality of search information extracted from each of the management information. 2. The method according to claim 1, wherein the plurality of pieces of management information belonging to the lower hierarchy are divided into a plurality of pieces by a predetermined number, and the plurality of pieces of search information are extracted from each piece of the plurality of pieces of management information. The information management method for an optical card according to claim 1. 3. The information management method according to claim 2, wherein the unit of the division is a track unit.