JPH03168890A - Memory card and memory card processor - Google Patents

Abstract

PURPOSE:To obtain interchangeability with other card processors by constituting a memory code of a directory area for storing directory information and a data area for storing data corresponding to the directory information. CONSTITUTION:The memory card processor is constituted of a built-in RAM 45 consisting of a directory part 10 and a data part 11 and a memory card 51 consisting of a directory part 20 and a data part 21. Each of the data parts 11, 21 is constituted of one or plural files and these files are accessed based on directory information stored in the directory parts 10, 20. Since data stored in the data area of the memory card 51 are stored correspondingly to the directory information, the memory card having interchangeability with other card processors can be constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a memory card and a memory card processing device that transfer data based on stored directory information. [Prior Art] The memory configuration of a conventional memory card and card processing device is shown in FIG. In the figure, 1 is a card processing device;
2 is a built-in memory section in this card processing device 1, and 3 is a memory section of a memory card. As shown in the figure, the memory section 3 of the conventional memory card is allocated to an expansion area provided continuously in the built-in memory section 2 of the card processing device l.

[Problems to be Solved by the Invention] The conventional memory card and card processing device described above have the following problems:
Since the memory section 3 of the memory card is allocated to the expansion area of the built-in memory section 2 of the card processing device 1, there is a problem that even if this memory card is connected to another card processing device, it will not work and there will be no compatibility. Ta. [Means for Solving the Problems] In order to solve such problems, a first invention of a card and memory card processing device according to the present invention provides a memory card with a directory area for storing directory information, and a directory area for storing directory information. and a data area for storing data corresponding to the data area.

In a second aspect of the invention, the memory card processing device is provided with reading means for reading data from a data area corresponding to directory information on the memory card based on directory information on the memory card.

In a third aspect of the invention, the memory card processing device is provided with a writing means for writing data into a data area corresponding to directory information on the memory card based on directory information on the memory card.

[Operation] Data stored in the data area of the memory card is stored in correspondence with directory information.

Furthermore, the memory card processing device reads data from the data area corresponding to the directory information on the memory card. Further, the memory card processing device writes data to a data area corresponding to the directory information on the memory card.

[Example] Next, the present invention will be explained with reference to the drawings.

FIG. 3 is a memory configuration diagram showing an embodiment of a memory card and a memory card processing device according to the present invention. In the figure, 10.20 is a directory section where directory information is stored, 11.21 is a data section where file data is stored, 45 is a built-in RAM consisting of a directory section 0 and a data section l1, and 5l is a directory section 20. and a data section 2l. Both data sections 11.21 are composed of one or more files, and these files are accessed based on the directory information stored in the directory section 10.20. ing. Also, the built-in RAM 45 and memory card 5l have different drive units, and each built-in RAM 45 and memory card 5l have different drive units.
The M45 is driven by the A drive, and the memory card 51 is driven by the B drive.

Next, in FIG. 2(a), the directory section lO, 20
details of the directory information stored within. In the figure, 30 is a flag section storing flags for managing file status, etc., 31 is a write/read record pointer section, 32 is a file name section, BOE is a starting address section of the file area, and E O E is a file area. The final address part of the area, EOD, is the start address part of the unused area of the file. Further, FIG. 11B shows details of the files stored in the data section 11.21. In the same figure, #l
~#3 is a record, #4 is a final record, and #5 is an unused record. Then, when a file read or file write command is input, the file status stored in the flag section 30 is detected, and if it is in a state where reading or writing of this file can be performed, the start address of the file area is detected. File data is sequentially read or written from record #1 corresponding to the first address stored in the section BOE to final record #4 corresponding to the final address stored in the final address section EOE of the file area. ing.

Next, FIG. 3 is a block diagram of the memory card and card processing device of the present invention. In the figure, 40 is the main body of the memory card processing device, 4 is a CPU that inputs command signals and controls reading and writing of file data based on directory information stored in the directory section;
2 is an LCD that is a display device for displaying file data that has been read or written; 43 is a keyboard that sends command signals for reading or writing file data; 44 is a ROM; 46 is a clock; 50 is a memory card. This is a memory card unit to which 51 is connected.

Then, when a read command is sent to the CPU 41 by operating the keyboard 43, the CPU 41 inputs it and selects the data section 11 or the data section based on the directory information stored in the directory section IO or the directory section 20. The file data stored in 21 is read out. In addition, data part 1
If only one file data is stored in each file data section 1.21, reading is performed from each start address of the data section 11.21 corresponding to the directory information, and multiple file data are stored in each data section 11.21. If a file is stored, reading is performed from the first address of the file corresponding to the directory information. Also, when the CPU 4■ inputs a write command,
Data is written to the same memory area as described above.

Next, the operation of the memory card and memory card processing device configured as described above will be explained based on the flowcharts shown in FIGS. 4 to 7.

FIGS. 4 and 5 are flowcharts illustrating the operation of the CPU 41 when the data portions 11 and 21 each consist of two files. First, explanation will be given starting from FIG. When the keyboard 43 is operated and a read command signal is sent out, this read command signal is input in step 60, and then in step 61, the data section is read based on the directory information stored in the directory section 0 and 20. 11, 2] is recognized, and in step 62, the data from the first address to the final address of this file is read 111W times, and the process ends.

Next, FIG. 5 will be explained. When the keyboard 43 is operated to send out a write command signal, this write command signal is inputted in step 70, and then in step 71 the data section 11 is input based on the directory information stored in the directory section 10.20. The start address of the file in .21 is recognized, and in step 72 data is sequentially written from this start address to the end address, and the process ends.

Next, FIGS. 6 and 7 show the CPU 4 when the data sections 11 and 21 each consist of a plurality of files.
1 is a flowchart illustrating the operation of FIG. First, the 6th
Let's explain from the diagram. When the keyboard 43 is operated and a read command signal is sent out, this read command signal is input in step 80, and then in step 81 this read command signal is input based on the directory information stored in the directory section 10.20. The starting address of the file corresponding to the command signal is recognized, and in step 82, the data from the starting address to the final address of this file is sequentially read out, and the process ends.

Next, FIG. 5 will be explained. When the keyboard 43 is operated and a write command signal is sent, this write command signal is input in step 90, and then this write command is inputted in step 9l based on the directory information stored in the directory section 10.20. Recognize the start address of the file corresponding to the signal and proceed to step 9
In step 2, data is sequentially written from the first address to the last address of this file, and the process ends.

As described above, the memory card and memory card processing device of the present invention can transfer file data between each data section and each file based on directory information. Transfer certain file data in data section 1■ to data section 2■
It can also be transferred to a certain file area.

[Effects of the Invention] As is clear from the above description, the memory card and memory card processing device according to the present invention have a memory card that has a directory area for storing directory information, and a memory card that has a directory area that stores directory information. Since it is configured with a data area where data is stored, if similar directory information is provided in another card processing device that processes this memory card, it can be connected to and operated. Therefore, it is possible to use memory cards that are compatible with other card processing devices.

Furthermore, since the memory card processing device is designed to read data from the data area corresponding to the directory information on the memory card, there is an effect that data can be easily read from the data area of the memory card.

Furthermore, since the memory card processing device is configured to write data to a data area corresponding to directory information on the memory card, there is an effect that data can be easily written to the data area of the memory card.

[Brief explanation of the drawing]

FIG. 1 is a memory configuration diagram of a memory card and memory card processing device according to the present invention, FIG. 2 (a) is a detailed yI diagram of directory information, and FIG. , FIG. 3 is a block diagram of this memory card and memory card processing device, FIGS. 4 to 7 are flowcharts explaining the operation of the above embodiment, and FIG. 8 is a memory configuration diagram of a conventional card processing device. . 10.20... Directory section, l1, 21-...
・Data part, 30...Flag part, 3l...Write/read record pointer part, 32...File name part, 40...Body part, 4l...CPU
, 43...Keyboard, 44...ROM, 45
...Built-in RAM, 50...Memory card unit, 51...Memory card, BOE...Start address part of file area, EOE...Final address part of file head area, EOD -・1・Start address part of file unused area, #I to #3...Record, #4
...Final record, #5...Unused record.

Claims (3)

[Claims] (1) A memory card comprising a directory area for storing directory information and a data area for storing data corresponding to the directory information. (2) A memory card processing device comprising reading means for reading data from a data area corresponding to the directory information on the memory card according to claim (1). (3) A memory card processing device comprising a writing means for writing data into a data area corresponding to the directory information on the memory card according to the directory information according to claim (1).