JPS6389922A - Optical disk managing device - Google Patents

Abstract

PURPOSE:To input and output data to an optical disk device connected to a GP-IB bus by a simple application program by providing a command converting means and a switching means in an operating system OS. CONSTITUTION:When a user process 11A outputs data input/output request to the switch 14 of OS 60 to perform the input/output of data to an optical disk device 4-1, the switch 14 outputs the request to a switch 15 based on a predetermined priority order. When inputted input/output request is that of the device 4-1, data input/output request is outputted to corresponding converting section 16-1 and converted to the command of the device 4-1. The command is inputted to a GP-IB controller 2 through a GP-IB processing section 13, and the device 4-1 is designated by the controller 2 while waiting the termination of processing and the interruption of corresponding device 4-1 to start an operation. Thus, data can be inputted and outputted to the device 4-1 connected to a GP-IB bus 3 by a simple application program.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an optical disk management device that manages data input/output to a plurality of optical disk devices connected on a GP-IB bus.

(Prior Art) FIG. 2 is a block diagram showing an example of a conventional optical disc management device. The user process 11A or 11B in the application program 50 inputs and outputs data to the optical disk device 4 based on the device number of the optical disk device 4, block number for data input/output, data input/output size, read or write command, etc. The data input/output request at the application program level is passed to the optical disk management section 12 within the application program 50. The optical disk management unit 12 converts the passed input/output request into an optical disk device command, further converts this command into a GP-IB command, and converts this GP-18 command into an operating system (hereinafter referred to as O8). The control is passed to the GP-IB processing unit 13 of O8. As a result, the GP-IB processing unit 13
sends the GP-IB command to the GP-IS controller 2.
Output to. GP-IB Sicon roller 2 is given G
Processing such as reading data from a specified block of the optical disk device with the specified device number based on the P-IB command and storing it in the memory 5, or reading data from the memory 5 and writing data to the block is performed. conduct.

As described above, since the optical disk device 4 is connected and managed on the GP-IB bus, the data input/output program to the optical disk device 4 in the application program 50 recognizes both the GP-IB bus and the optical disk 884 commands. This has the disadvantage that the design of the optical disk management section 12 is particularly complicated. In addition, when the optical disk device 4 is made into a multi-deck system as shown in FIG. Therefore, data input/output to and from the optical disk device 4 must be comprehensively managed, which has the disadvantage that the design of the application program 50 becomes extremely complicated and takes time and effort to create.

(Problems to be Solved by the Invention) As mentioned above, in the conventional optical disk management device, the optical disk device and GP-IB are connected at the application program level.
There is a drawback that the input/output program must be created keeping in mind both the Babasu commands, making the application program complex and requiring time and effort to create. SUMMARY OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks, and aims to provide an optical disk management device that can input and output data to and from an optical disk device connected to a GP-IB bus using a simple application program. .

[Structure of the Invention] (Means for Solving the Problems) The present invention provides input/output requests to an optical disk device issued from a user process of an application program to GP-
After converting it into an IB command, the optical disk management device performs data input/output processing to the corresponding optical disk device based on this GP-IB command. A first switch means for outputting data input/output requests in a predetermined order, and a process for converting passed data input/output requests into optical disk device commands and further converting them into GP-I8 commands are connected to the GP-IB bus. a command converter comprising a plurality of command converters that independently perform the command conversion for each of the plurality of optical disk devices, and a data input/output request output from the first switch means, which passes the data input/output request to the command converter corresponding to the corresponding optical disk device; a second switch means;
A GP-IB that controls data input/output to the optical disk device based on the GP-IB command passed from the command conversion means.
The operating system is provided with a GP-I B9!1 processor that outputs the GP-IB command to the controller and executes the GP-IB command.

(Function) In the optical disk management device of the present invention, the first switch means once receives data input/output requests issued from a plurality of user processes, and then outputs these data input/output requests to the second switch means in a predetermined order. do. The second switch means passes the passed data input/output request to the corresponding command conversion section of the command conversion means that converts the passed data input/output request into a GP-IB command to the related optical disk device.

The command conversion means converts the passed data input/output request into a command for the corresponding optical disk device, and further converts this into a G
After converting into a P-IB command, this is passed to the GP-IB processing means. The GP-IB processing means receives the passed GP.
-IB command is output to the GP-■B controller to execute data input/output operation to the corresponding optical disk device.

(Example) An example of the present invention will be described below with reference to the drawings, in which the same parts as those of the conventional example are denoted by the same reference numerals. FIG. 1 is a block diagram showing an embodiment of an optical disc management device of the present invention.

1 is a CPU with memory (not shown) and an application program 50. The operating system 60 controls data input/output to the optical disk device 4 . 2 is C
A GP-IB that performs data input/output operations to any one of the optical disk devices 4-1 to 4-3 via the GP-IBB2S3 in response to a GP-IB command received from the PLll.
A controller 3 is a GP to IB bus that connects a plurality of optical disk devices 4, 4-1 to 4-3 are optical disk devices that read and write data to and from optical disks via laser light, and 5
11A to 11o are user processes within the application program 50; 13 is a GP-IB that outputs GP-IB commands to the GP-IB controller 2; The processing unit 14 is a switch that, after accepting data input/output requests from the user processes 11A to 11c, passes the data input/output requests of each user process one by one to the switch 15 based on the order of reception or a predetermined priority order. , 15 are switches that pass the data input/output request passed from the switch 14 to the conversion unit corresponding to the corresponding optical disk device; 16-1 to 15;
1 and 3 are conversion units that convert passed data input/output requests into GP-IB commands, and conversion units 16-1 to 16-3 correspond one-to-one to optical disk devices @4-1 to 4-3. are doing.

Further, the above-mentioned 13 to 16-1.16-2.1B-3 are in the operating system 60.

Next, the operation of this embodiment will be explained. For example, when the user process 11A issues a data input/output request consisting of a device number, block number, input/output size, read/write command, etc. to the switch 14 of the 0860 in order to input/output data to the optical disk device 4-1, the switch 14 will once accept this data input/output request. The switch 14 passes the data input/output requests to the switch 15 based on the order of reception of the received data input/output requests or a predetermined priority order.

If the passed data input/output request is for, for example, the optical disk 8@4-1, the switch 15 passes the data input/output request to the corresponding converter 16-1.

The conversion unit 16-1 converts the passed data input/output request into a command for the optical disk device 4-1, further converts this command into a GP-IB command, and sends this GP-IB command to the GP-IB processing unit 13. hand over. GP-IB processing section 13
actually outputs the passed GP-IB command to the GP-IB controller 2, and generates a processing end interrupt for the corresponding optical disk device (here, the optical disk device 4-1). Meanwhile G
The P-IB controller 2 designates the optical disc device of the designated device number, here the optical disc device 4-1, based on the given GP-IB command, and thereby starts the operation of the optical disc device 4-1.

After that, the GP-IB controller 2
It controls processing such as reading data from a designated block 1 and storing it in the memory 5, or reading data from the memory 5 and writing data into the block. When the output of data to the optical disk device @4-1 is completed, the optical disk device 4-1 generates an interrupt and outputs this interrupt to the GP-IB controller 2. When the GP-IB controller 2 receives the interrupt, control is transferred to the GP-IB processing unit 13, and the status of the interrupt is passed to the user process 11A via the switch 14.

Thereafter, the switch 14 passes the next data input/output request to the switch 15, and the same process as above is repeated.

According to this embodiment, since the user processes 11A to 11° only need to issue data input/output requests at the application program level, the application program 5
GP-IBB2S3 optical disk device 4 by simplifying 0.
The application program sim can be created without being aware of the commands from -1 to 4-3. In addition, the switch 14 of 0860 causes the user processes 11A to
Even if data input/output requests are issued from 11c at the same time,
In order to organize this and sequentially pass input/output requests to the next stage for processing, the application program 50 level can send data input/output requests to an optical disk device from among the multiple optical disk devices that you want to use without being aware of it. Each optical disk device can be freely accessed as if it were its own private device, and the application program does not become complicated because of this.

[Effects of the Invention] As described above, the optical disc management device of the present invention has the advantage that a simple application program can issue data input/output commands to an optical disc device connected to a GP-IB bus.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an optical disc management device of the present invention, and FIG. 2 is a block diagram showing an example of a conventional optical disc management device. 1... CPU 2... GP-IB controller 3... GP-IB bus-1 to 4-3... Optical disk device 11A to 11c... User process 13... GP-IB processing unit 14 .15...Switches 16-1 to 16-3...Conversion Department Agent Patent Attorney Nori Chika Ken Ken Shu Sanno -

Claims (1)

[Claims] An optical disk management device that converts an input/output request to an optical disk device issued by a user process of an application program into a GP-IB command, and then performs data input/output processing to the corresponding optical disk device based on this GP-IB command. , a first switch means for once accepting data input/output requests issued from a plurality of user processes and then outputting these data input/output requests in a predetermined order; and converting the passed data input/output requests into commands for an optical disk device. command converting means comprising a plurality of command converting sections that independently convert the command into a GP-IB command for each of the plurality of optical disk devices connected to the GP-IB bus, and output from the first switch means. a second switch means for passing a data input/output request to the command converter corresponding to the corresponding optical disk device; and a GP-IB command for controlling data input/output to the optical disk device, for controlling the input/output of data to the optical disk device, and a GP-IB command passed from the command conversion means. GP-IB that outputs to the IB controller and executes this GP-IB instruction
An optical disc management device characterized in that an operating system is provided with processing means.