JPS6297022A - Optical disk control system - Google Patents

Abstract

PURPOSE:To minimize the resetting time to the initial state for an optical disk when an abnormal state occurs by providing a matrix deciding device at the side of an external computer to decided the procedure number to reset the optical disk to a normal state from the present procedure number and state of the optical disk. CONSTITUTION:An optical disk 2 is controlled by an external computer 5 via an optical disk driver 1. The computer 5 incorporates an operation controller 18 which decided the next operating procedure after deciding the normal or abnormal state of the driver 1 from the contents of a state register 14. Then the controller 18 delivers a command to processed the procedure to the next state when a normal state of the driver 1 is confirmed. The controller 18 contains a matrix deciding device that decides the next optimum procedure number from the contents of the register 14 and a procedure number register 11. Thus the controller 18 is reset to it initial state by said optimum procedure when the result of said decision shows the presence of abnormality. In such a way, it is possible to reset the disk 2 to its original operating procedure in the shortest time when the disk 2 has an abnormal action.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an optical disc control method, and more particularly to a method for controlling an optical disc drive device from an external computer via a data transmission circuit.

[Background of the invention]

Manual operation of the optical disc drive device.

When a problem occurs on the optical disc side or an operational error occurs on the human side during operation.

The human side decides what operation to do next,
It's back to normal.

When controlling from an external computer, it is necessary to constantly monitor the state of the optical disk and, if an abnormality is detected, to restore the normal state optimally and in the shortest possible time.

Optical discs have similar functions as video tape recorders, such as playback and recording, but compared to video tape recorders,
Instant playback of the desired image is possible, and even when recording,
By using write-once optical discs, general users can
Recording is now possible.

Since optical discs record using digital values, the image quality is clear and has various advantages.While video tape recorders are mainly operated manually, optical discs are controlled by an external computer. This will enable the company to make even more use of its features. For this reason, it is important not only to provide reliable instructions on the operating procedures for playback and recording.

Even if the state of the optical disc becomes abnormal during operation, a means for returning to the normal state is required, rather than completely canceling the operation.

[Purpose of the invention]

An object of the present invention is to, when controlling an optical disk drive device from an external computer, store operating procedures on the external computer side and constantly monitor the state of the optical disk side, so that when an abnormal state occurs, each time point The object of the present invention is to provide a system that performs the return side in the optimum shortest time every time.

[Summary of the invention]

According to the present invention, the operating procedure for the optical disc is stored on the external computer side.1. When a command (operation instruction) is given to the optical disc drive according to this operating procedure, a response is sent from the optical disc drive to the external computer. The external computer analyzes this response and determines whether it is a normal response corresponding to the command. If the response is abnormal, the external computer determines which command should be given as the primary to restore the optical disk to a normal state. ,
This is an optical disc control system characterized by having a matrix determination device for determining the matrix.

[Embodiments of the invention]

An embodiment of the present invention will be explained below with reference to FIGS. 1 to 4. In FIG. 1, the optical disc drive value [1 is connected by the control edge 6 to control the optical disc 2. In addition, a monitor device &3 for reproducing the information on the optical disc 2 is provided.
There is also an input device xt4 etc. for inputting information to the optical disc 2, and these are the basic configuration for playing back and recording the optical disc 2, and it is also possible for a human to manually operate the optical disc drive device 1. be. On the other hand, the present invention provides an external computer 5 to these basic configurations,
A control system using this external computer 5 is provided.

FIG. 2 shows a state transition diagram of the optical disc drive value fItl. For example, when playing, ij, 5top -e 5ta
ndby-* 5till-e 5earch 5t
A predetermined video is reproduced by performing a state transition of andby-*Beach-e 5till. In Figure 2, the characters inside the circles are state names, and the characters next to the arrows mean commands. In other words, external computer 5
In this process, the state of the optical disc drive device 1 is monitored, and it is determined which command to give to the optical disc drive device 1 to which state it will transition to, and if a predetermined response to the command is not returned, the optical disc drive device 1 , it is necessary to determine that a problem has occurred, and to which position on the state transition diagram to return to and re-execute.

Returning to FIG. 1 again, the external computer 5 has a register group 10 built therein. The register group 10 is a procedure register 1
1. Command register 12. response register 13,
It consists of a status register 14 and a re-execution counter 15. In addition, the optical disk drive system fll and the external computer 5
are connected by control lines. That is, the command control line 7 from the command register 12 to the optical disk drive device 1t1 and the response control line fRH13 from the optical disk drive device 1 in the opposite direction to the response register 13.
Consists of. The command control device 16 takes in the contents of the procedure register 11, determines the command, and inputs the command into the command register 12.

A state determiner 17 that takes in the contents of the response register 13 and determines the state of the optical disk drive 1 inputs the state into the state register 14. The operation controller 18 is a device that determines whether the optical disk drive device 1 is normal or abnormal based on the status of the status register 14 and determines the next operating procedure. When the judgment result of the operation side device 18 is determined to be normal, the intended operation procedure shop is registered in the procedure shop register 11.
, and issues a command to advance the state of the optical disk drive device 1 to the next state. When the judgment result of the operating side device 18 is determined to be abnormal, the current procedure specialist will be asked to
It is necessary to determine the situation and return to normal conditions in the shortest possible time by taking the optimal route. The operation suppressor 18 includes a matrix determiner [
There are 30 (Figure 3).

Perform the above process. The matrix determiner [30 is a device that takes in the contents of the 1-procedure register 11 and the status register 14 and determines the next procedure. That is, it is arranged in a matrix, the vertical axis represents the current procedure, and the horizontal axis represents the status of the optical disk drive device l.

The contents of the matrix, for example F(i, j), are such that when the current procedure is 1, the latest state of the optical disk drive 1 is j
If this is the case, the optimal operating procedure to be performed in the second stage at this time is set. Next, the re-execution counter 15 in FIGS. 1 and 3 is structurally the same as the matrix determination device 30. (See Figures 3 and 4)
The re-execution counter 15 is determined by the judgment result of the operating anatomical device 18.
When an error occurs, the corresponding counter in a matrix is updated.

An upper limit value is set for each counter, and when the number of re-executions exceeds a certain value, all processing is stopped and returned to the initial state. The re-execution counter generator 19 controls the re-execution counter 15 in accordance with the command from the operation controller 18 and notifies the procedure register 11 of the next operation procedure.

〔Effect of the invention〕

According to the present invention, when the optical disc device is controlled from an external computer, when the optical disc device enters various states, there is a process for returning to the original operating procedure in response to the various states.
It allows determining and directing the optimal, shortest time procedure. Also, measures are taken to prevent the same loop from being re-executed an infinite number of times.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a state transition diagram. 3 and 4 are partial detailed views of FIG. 1. l... Optical disc drive device, 2... Optical disc, 3
... Monitor device, 4... Input device, 5... External computer, 10... Register group, 11... Procedure store register, 12... Command register, 13... Response register, 14 ...Status register, 15...
・Rerun Callan Filling 1st 2nd time

Claims (1)

[Claims] 1. In a system that controls an optical disc drive device from an external computer via a data transmission circuit, the response from the optical disc to a command from the external computer is captured, and the next operation is performed based on the current command and the corresponding response. is an optical disc control method characterized by arranging which commands should be used in a matrix.