JPH0251727A - Access system for optical recording medium - Google Patents

Abstract

PURPOSE:To realize an access to an optical recording medium like other existing media with use of a command, etc., of a computer main body and at the same time to reduce the load of the computer main body by using a control board containing a directory evolving process part, etc. CONSTITUTION:A directory evolving process part 10 of a control board 3 reads the directory of an optical card and converts the directory into a format subject to the operating system of a personal computer 1 to evolve it onto a memory part. While a retrieving process part 11 receives the read data to check whether this data is stored in the memory part or not or receives the write data to search an idle area of the memory part for the data. Then the data are processed via a data transmission/reception part 12, a directory updating process part 13, a data I/O process part 14, a personal computer interface process part 15, and an I/O interface process part 16. Thus it is possible to give an access to an optical recording medium like other existing media with a command of the computer 1 and at the same time to reduce the processing load of the computer main body.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optical recording medium access method that allows a special recording medium device called an optical recording medium to be accessed as if it were an existing device such as a magnetic disk. .

[Prior Art] Normally, personal computers and the like use recording media such as magnetic disks to access data. In this case, input/output control of the magnetic disk device is performed by O3 (operating system) stored in the personal computer.

When accessing an optical recording medium device, which is a special recording medium, using such a burner computer, access is achieved by incorporating special software different from the O5 mentioned above to control the input/output of the optical recording medium. ing.

[Problems to be Solved by the Invention] The conventional system described above has the following problems when attempting to access an optical recording medium.

(1) The above software for accessing optical recording media is very large, so if it were to be incorporated into a personal computer for processing, it would be difficult to use a personal computer in terms of memory size, processing time, etc. This places a heavy burden on the main body.

(2) Unlike conventional recording media that are erasable, optical recording media are often non-erasable and cannot be handled like conventional recording media from personal computers.

(3) Special I10 functions and commands must be used from the personal computer to access the optical recording medium.

(4) One hour is lost because the optical recording medium is accessed every time there is an access request from a personal computer.

(5) Error countermeasures must be taken for a special recording medium called an optical recording medium.

(6) A file system that takes advantage of the characteristics of optical recording media must be constructed.

[Means for Solving the Problems 1] The optical recording medium access method of the present invention that solves the above-mentioned conventional problems includes: connecting an optical recording medium reading/writing device to a computer main body;
In a system in which an optical recording medium is accessed from a computer main body using the optical recording medium reading/writing device, the computer main body is provided with an island that controls the optical recording medium reading/writing device and has the same configuration as an existing magnetic disk device. The feature is that a control board is connected to enable access.

In a preferred embodiment, the control board can be installed in a slot in the computer main body.

The control board also includes a directory expansion processing section, various interface processing sections, a search processing section, a data transfer/reception processing section, a data input/output processing section, and a directory update processing section.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 3 show an optical recording medium access system according to an embodiment of the present invention. In this embodiment, a case where an optical card is accessed as an optical recording medium will be described.

In FIG. 1, the system of this embodiment is comprised of a personal computer (hereinafter referred to as a personal computer) 1, an optical card reading/writing device 2, and a control board 3.

The above-mentioned personal computer l has a floppy disk device δ that serves as an auxiliary storage device for reading and writing data and programs.
7 is built-in.

The optical card reading/writing device 2 is a device that reads and writes data to and from an optical card using an optical head using laser light. Further, an optical card is a card-shaped storage medium formed by forming a storage layer on a business card-sized substrate on which digital values can be stored using laser light.

The UW board 3 is used to control access to the optical card read/write device 2 by the personal computer 1, and is used by being attached to a slot of the personal computer 1.

As shown in FIG. 1, the personal computer 1 and the control board 3 are connected by a bus, and the control board 3 and the optical card read/write device 2 are connected via a parallel interface bus.

The configuration of the control board 3 is shown in FIG.
Consisting of a directory expansion processing section 10, a search processing section 11, a data transfer receiving section 12, a directory update processing section 3, a data I10 processing section 14, a personal computer interface processing section 15, and an I10 interface processing section 16. has been done.

The directory expansion processing unit IO reads the directory on the optical card, converts it into a format compliant with the O5 of the personal computer 1, and expands it on the storage unit (for example, RAM) of the control board 3.

The search processing section 11 receives data related to read data and checks whether the data exists in the storage section of the control board 3, or receives data related to read data and checks whether the data exists in the storage section of the control board 3. Part F
Find an empty area.

The data transfer receiving section 12 transfers the data on the storage section of the M control board 3 to the personal computer 1, and also receives data from the personal computer 1 and stores it in the storage section of the control board 3.

The directory update processing unit 13 adds a new directory entry, writes the added entry to the optical card, and sends the updated directory to the personal computer l.

In addition, 1 the above data 710 processing section 14, personal computer interface processing section 15 and I10 interface processing section 1
6 controls the exchange of data and commands between the personal computer 1 and the optical card read/write device 2.

Next, the operation of reading data from the optical card reading device 2 to the personal computer 1 will be explained using the flowcharts of FIGS. 2 and 3.

First, the directory expansion processing unit lO of the control board 3
10 interface processing section 16 reads the directory of the optical card, converts it into a format compliant with O5 of the personal computer 1, develops it on the storage section of the control board 3, and sends it to the personal computer 1.

v! regarding the read data issued from the personal computer 1. The search processing unit 11 receives the information and checks whether the data exists in the storage unit of the control board 3. If the data exists, the data is transferred to the computer by the data transfer receiving unit 12.
sent to.

If the data does not exist, the data is read from the optical card through the data I10 processing unit 14, and stored in the storage unit of the control board 3 by the data transfer receiving unit I2 so that the same data does not need to be accessed from the optical card later. from there to PC 1. The arrows in figure f52 indicate the flow of commands and data at that time.

The operation of writing data from the personal computer 1 to the optical card read/write device 2 will be explained using FIGS. 4 and 5.

As in the case of reading, first the directory expansion processing section 1
Directory expansion processing using 0 is performed. after that,
The search processing unit 11 receives information regarding the written data,
Searching for an empty area to occupy the write data on the storage section of the control board 3, the data transfer receiving section 12 transfers the data to the personal computer 1.
The fill data from is stored in the empty area.

The stored data is written to the optical card through the data I10 processing unit 14, and finally the directory is updated by the directory update processing unit 13. That is, a new directory entry is added, the added entry is written to the optical card, and the updated directory is sent to the personal computer l.

In the above explanation, the directory expansion processing unit 10 is always processed first, but this only occurs when the system is started or when the optical card is replaced. Once the head directory is transferred once, the process is not performed thereafter and the search process is executed first.

In the above embodiment, a case has been described in which an optical card is accessed as an optical recording medium, but it is also possible to apply the present invention to accessing an Asahi optical disk or the like.

[Effects of the Invention] As explained above, according to the optical recording medium access method of the present invention, an optical recording medium reading/writing device is connected to the computer main body, and the optical recording medium reading/writing device reads and writes optical data from the computer main body. In a system that accesses a medium, a control board that controls the optical recording medium reading/writing device and enables access in the same state as an existing magnetic disk device, etc. is connected to the computer main body. It can be accessed in the same way as other existing media using the main unit's commands and 10 functions.

Furthermore, the burden on the computer body in terms of memory size and processing time can be reduced compared to accessing the optical recording medium reading/writing device using only software installed on the computer body.

[Brief explanation of the drawing]

Figure 1 is an external view showing the hardware configuration of the optical recording medium access method according to the present invention, Figures 2 and 4 are block diagrams showing the configuration of the control board, and Figure 3 is from the optical card read/write device to the personal computer. Flowchart for reading data FIG. 5 is a flowchart for writing data from a personal computer to an optical card read/write device. l: Personal computer 2: Optical card read/write device 3: Control board 7: Floppy disk device IO = directory expansion processing section 11: Search processing section 12: Data transfer receiving section 13: Directory update processing section 14: Data I10 processing section 15 :PC interface processing unit 16: I10 interface processing unit Applicant: CSK Co., Ltd.

Claims (3)

[Claims] (1) In a system in which an optical recording medium reading/writing device is connected to a computer main body, and the optical recording medium is accessed from the computer main body by the optical recording medium reading/writing device, the optical recording medium reading/writing device is connected to the computer main body. 1. An optical recording medium access method characterized by connecting a control board that controls a loading device and enables access in the same state as an existing magnetic disk device. (2) The optical recording medium access method according to claim 1, wherein the control board can be installed in a slot of a computer main body. (3) A claim characterized in that the control board includes a directory expansion processing section, various interface processing sections, a search processing section, a data transfer reception processing section, a data input/output processing section, and a directory update processing section. The optical recording medium access method according to item 1.