JPH09305974A - Write-once optical disc producing/reproducing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the logic matching between the data of the newest user data managing part and the user data of a user data part and set in the state capable of writing-once to prevent the frequent occurrence of unusable write-once optical discs. SOLUTION: A keyboard 1, a mouse 2, a written data storage device, a RAM 4, a CD-R image storage unit 5, a CD-R writing/reading device 6, a program storage unit 9, a display controller 10, a display 11, a CPU 12 and a bus-line 13 are provided. After the data of the user data managing part is written first, if the writing of the user data in a user data part is interrupted by a system trouble, the effective user data portion of the already written user data portion is automatically decided and a user data managing part which manages the effective user data portion and the user data of a previous session is produced. Only the newly produced user data managing part is added automatically to the next session.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a write-once optical disc creating / reproducing system which performs mastering for writing data on an write-once optical disc to create it, and reads and reproduces the written data.

[0002]

2. Description of the Related Art Recently, a write-once type for writing (mastering) data to a compact disk (CD) for audio and a CD-ROM for storing various data and reading and reproducing the written data. An optical disc (CD-R) is used.

In the write-once type optical disk producing / reproducing system for writing / reading data to / from this write-once type optical disk, devices stored in a floppy disk, a magneto-optical disk and a hard disk are selected and the data is written. In this case, after writing the data in the user data management section, the user data is written in the user data section. If a trouble occurs during the writing of the user data portion and the writing of the user data is interrupted, the writing is finished at this point.

[0006] In this case, a write-once optical disc which cannot be read (reproduced) by the operation system (OS) is created because a logical contradiction occurs between the user data management section data and the user data section user data. Will end up. Therefore, when the writing is interrupted after writing a very small amount of user data in the user data section, the write-once optical disc becomes unusable although a large amount of user data can be written thereafter.

[0005]

As described above, in the above-described write-once optical disc creating / reproducing system of the conventional example, when a trouble occurs during writing of user data in the user data section and the writing is interrupted, the write-once optical disc is written. However, there is a drawback that the write-once optical disc is often wasted because it becomes unusable.

The present invention solves the problems in the prior art as described above. When the writing of user data is interrupted, the written user data and the user data management unit up to the previous session are provided. It is possible to automatically add to the next session, maintain the logical matching between the latest user data management section and the user data section, and set it to the write-once state, thereby increasing the number of unusable write-once optical disks. It is an object of the present invention to provide a write-once optical disc creation / reproduction system that can be avoided.

[0008]

In order to achieve the above object, a write-once type optical disk producing / reproducing system of the present invention according to claim 1 has a plurality of write data storing write data for writing on the write-once type optical disk. Device selecting means for selecting an embedded data storage device, write data selecting means for selecting write data from a plurality of write data storing devices selected by the device selecting means, and write data selected by the write data selecting means A formatter for formatting the write-once type optical disc based on the above, a writing unit for writing the write data selected by the write data selecting unit on the write-once type optical disc formatted by the formatter, and a user data management unit. After writing the write data first, while writing the user data in the user data section, Interrupt determination means for determining whether or not writing has been interrupted by a block, and automatic determination means for automatically determining the valid user data portion of the already written user data portion when the interrupt determination means determines that writing has been interrupted. And with.

According to another aspect of the write-once type optical disk producing / reproducing system of the present invention, after the writing is interrupted, the effective user data part of the already written user data part is automatically judged by the automatic judging means, It is provided with a creating means for creating a user data management unit for managing user data up to the previous session.

According to another aspect of the write-once type optical disk producing / reproducing system of the present invention, after the producing means produces the user data managing section, the additionally producing means additionally writes only the produced user data managing section to the next session. .

According to another aspect of the write-once type optical disc production / reproduction system, when the interruption judging means judges that the writing is interrupted, only the user data management section of the previous session is additionally recorded in the next session and copied. It is provided with a session additional recording means. Claim 1 having such a configuration
The write-once optical disc creation / reproduction system of the described invention is such that if the writing is interrupted due to a system trouble during writing of the user data section after the user data management section is written first, the valid user of the already written user data section is written. The data part is automatically judged. Therefore, only the valid user data section is reflected in the user data management section.

The write-once type optical disk producing / reproducing system according to a second aspect is such that, after the writing is interrupted according to the first aspect, the valid user data portion of the already written user data portion is automatically determined, and the valid user data portion is then detected. And a user data management unit that manages user data up to the previous session is created. Therefore, it becomes possible to refer to valid user data of the entire write-once optical disc until the writing is interrupted.

Since the write-once type optical disk creation / playback system according to claim 3 creates the user data management section according to claim 2, only the created user data management section is added to the next session. The logical matching between the data in the user data management section and the user data in the user data section is maintained, and the write-once optical disc readable by the operation system can be created.

Since the write-once type optical disk production / reproduction system according to claim 4 additionally writes a copy of only the user data management section of the previous session to the next session when the writing according to claim 1 is interrupted. , It becomes possible to logically return to the state before the writing in which the system trouble has occurred, and it is set to the additionally writable state.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a write-once type optical disk producing / reproducing system of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of a write-once optical disc creating / reproducing system of the present invention. In FIG. 1, this write-once optical disc creation / playback system has a keyboard 1 and a mouse 2 for performing operations for writing (creating, mastering) data on the write-once optical disc and reading (playing) the written data. ing. In addition, it has a write data storage device 3 such as a floppy disk, a magneto-optical disk, and a hard disk that stores write data necessary for mastering, reproduction, and system control.

Further, a RAM 4 for carrying out a working process for temporarily storing processed data, a CD-R image storage section 5 for storing a CD-R image, and a CD for writing or reading data to or from the CD-R. -R writing / reading device 6 is included. Further, a program storage unit 9 for storing a control program and a CD-R writing / reading program, and a display control device for controlling display of data stored in the RAM 4 and data such as windows and icons corresponding to various functions. 10 and 10.

A display 11 for displaying a screen on a CRT or the like under the display control of the display control device 10, a control program stored in the program storage unit 9 and a CD-R writing / writing stored in the program storage unit 9 It has a CPU 12 that performs control based on a reading program, and a bus line 13 that connects each unit to exchange data.

Next, the operation of this embodiment will be described. An input operation for selecting the write data storage device 3 required for CD-R creation, reproduction and system control is performed from the keyboard 1 and the mouse 2, and an operation for selecting write data from the selected device is performed. The write data storage device 3 stores the actual write data used for creating the CDR and is selected by the keyboard 1 or the mouse 2. The RAM 4 stores the write data of the selected write data storage device 3, which is necessary for creating the CDR, and further writes to the CD-R writing / reading device 6, and when reading is instructed by the control of the CPU 12, A working process for partially creating a CD-R image to be stored in the CD-R image storage unit 5 is performed. The CD-R writing / reading device 6 has a built-in CPU and RAM.
Under the control of No. 2, data transfer, writing (creation) and reading (reproduction) on the CD-R are performed.

The display control device 10 controls the display of a display 11 such as a CRT. By this display control, the data stored in the RAM 4 and the data such as windows and icons corresponding to various functions are displayed on the display 11. it's shown. The CPU 12 receives a keyboard 1, mouse 2, R connected to the bus line 13 according to an input instruction from the keyboard 1 and the mouse 2 and a control program stored in the program storage unit 9 corresponding to the instruction.
The AM 4, the display control device 10 and the CD-R writing / reading device 6 are controlled and their operations are executed.

2 and 3 are flowcharts showing the processing procedure in the operation of the embodiment. 2 and 3, in this routine, with the keyboard 1 and the mouse 2,
The write data storage device 3 is selected, the write data is read, and CD-R format data is created based on the selected write data (steps S1, S2, S3).
S4, S5, S6). Next, a CD-R image file in which the user data management unit and the user data unit are integrated is created and stored in the CD-R image storage unit 5 (step S7).

This CD-R image file is a CD-R
The keyboard 1 and the mouse 2 give an instruction to write through the writing device (CD-R writing / reading device 6) (step S8). If a system trouble occurs during the writing of the user data section after the user data management section is first written and the writing is interrupted (step S9: Yes), the user data of the already written user data section is written. The effective portion of is automatically discriminated (step S10). The closing of this writing session is instructed to the CD-R writing device (CD-R writing / reading device 6) with the keyboard 1 and the mouse 2 (step S11).

After creating a user data management section for managing this valid user data section and user data up to the previous session (step S12), it is instructed to write only the user data management section to the next session ( Step S13). Next, the CD-R writing device (CD-R writing / reading device 6) is instructed to close the writing session by operating the keyboard 1 and the mouse 2 (step S14).

The CD-R image file in this flowchart is a data file after being converted to the CD-R format, and the user data management section is arranged at the top of this file, and the user data is stored after this. It is arranged.

4 and 5 are flowcharts showing another processing procedure in the operation of the embodiment. 4 and 5, this routine performs the same processing up to step S9 in the routines shown in FIGS. 2 and 3 (steps S31, S32, S33, S34, S35, S36, S).
37, S38, S39). After writing the user data management section for the first time in step S39, if a system trouble occurs during the writing of the user data section and the writing is interrupted (Yes), the CD-R is to close this writing session. Writing device (CD-R writing,
The reading device 6) is instructed by the keyboard 1 and the mouse 2 (step S40).

Next, the data of the user data management section of the previous session is read (step S41). The data of the user data management part of the previous session that has been read is written to the next session. That is, only the user data management part of the previous session is duplicated (step S42). Then, the keyboard 1 and the mouse 2 are used to instruct the CD-R writing device (CD-R writing / reading device 6) to close this writing session (step S43). If it is determined in step S39 that the writing has not been interrupted (No), the writing of the user data in the user data section is continued and the process proceeds to steps S44 and S43.

[0026]

As is apparent from the above description, according to the write-once type optical disc producing / reproducing system of the invention described in claim 1, when the writing is interrupted during the writing of the user data portion, the already written user data is written. Since the valid user data part of the department is automatically determined, only the valid user data part is reflected in the user data management part, and the logical consistency between the latest user data management part and the user data part is maintained. Then, the write-once state can be set so that the write-once type optical disk which cannot be used frequently can be prevented.

According to the write-once type optical disk producing / reproducing system of the second aspect, after the writing is interrupted, the valid user data portion of the already written user data portion is automatically determined, and then the valid user data portion and the previous A user data management unit that manages user data up to the session is created. Therefore, it becomes possible to refer to valid user data of the entire write-once optical disc until the writing is interrupted.

According to the write-once type optical disc creation / playback system of claim 3, after the writing is interrupted and the user data management section is created, only the created user data management section is added to the next session. The logical matching between the latest data in the user data management section and the user data in the user data section is maintained, and it becomes possible to create a write-once optical disc that can be read by the operation system.

According to the write-once type optical disc production / reproduction system of the fourth aspect, when the writing is interrupted, the copy of only the user data management section of the previous session is additionally written to the next session. It becomes possible to logically return to the state before the writing in which the trouble occurred, and it becomes possible to set the state in which additional recording is possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a write-once optical disc creating / reproducing system of the present invention.

FIG. 2 is a flowchart (part 1) showing a processing procedure in the operation of the embodiment.

FIG. 3 is a flowchart (part 2) showing a processing procedure in the operation of the embodiment.

FIG. 4 is a flowchart (part 1) showing another processing procedure in the operation of the embodiment.

FIG. 5 is a flowchart (part 2) showing another processing procedure in the operation of the embodiment.

[Explanation of reference symbols] 1 keyboard 2 mouse 3 write data storage device 4 RAM 5 CD-R image storage unit 6 CD-R writing / reading device 9 program storage unit 10 display control device 11 display 12 CPU 13 bus line

Claims (4)

[Claims] 1. A device selection unit for selecting a plurality of write data storage devices storing write data for writing on a write-once optical disc, and a plurality of write data storage devices selected by the device selection unit. Write data selection means for selecting write data, format means for formatting the write-once optical disc based on the write data selected by the write data selection means, and write-once formatted by the format means Writing means for writing the write data selected by the write data selecting means on the optical disc, and after writing the write data in the user data management section first, while writing the user data in the user data section, Interruption determination means for determining whether or not writing has been interrupted due to system trouble, and the interruption determination means When the writing is determined to be interrupted, already written write-once optical disc created playback system characterized in that it comprises an automatic determining automatic judgment means a valid user data portion of the user data portion. 2. The write-once type optical disc creation / reproduction system according to claim 1, wherein after the writing is interrupted, the valid user data portion of the already written user data portion is automatically determined by the automatic determination means, and thereafter the valid user A write-once optical disc creation / playback system comprising a creating means for creating a user data management unit for managing a data part and user data up to the previous session. 3. The write-once type optical disc creation / playback system according to claim 2, further comprising: an add-on means for adding only the created user data management section to a next session after the creation means creates the user data management section. A write-once optical disc production / playback system characterized by the above. 4. In the write-once type optical disc production / reproduction system according to claim 1, when the interruption judging means judges that the writing is interrupted, only the user data management section of the previous session is additionally recorded in the next session. A write-once optical disc creation / playback system comprising a session write-once unit for duplicating and then duplicating.