JP3484294B2 - Optical disc creation and playback system - Google Patents

Description

BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention performs mastering to create writing data to an optical disc, and an optical disk creation reproducing system that reads out and reproduces the written data About. 2. Description of the Related Art Recently, data has been written (mastered) on a conventional compact disk (CD) for audio or a CD-ROM storing various data, and the written data has been read and reproduced. A write-once optical disc (CD-R) is used. In a write-once optical disc creation / playback system for writing and reading data on a write-once optical disc, a device stored in a floppy disk, a magneto-optical disk, or a hard disk is selected and the data is written. In this case, after writing the data in the user data management unit, the user data is written in the user data unit. When a trouble occurs during the writing of the user data portion and the writing of the user data is interrupted, the writing is terminated at this point. In this case, a logical inconsistency occurs between the data in the user data management section and the user data in the user data section, and a write-once optical disc which cannot be read (reproduced) by the operation system (OS) is created. Would. Therefore, when writing is interrupted after writing very little user data in the user data section, the write-once optical disc becomes unusable even though a large amount of user data can be written thereafter. [0005] As described above, in the above-mentioned conventional write-once type optical disc producing / reproducing system, when a trouble occurs during the writing of the user data in the user data section and the writing is interrupted, the problem is solved. The write-once optical disc becomes unusable, and there is a disadvantage that the write-once optical disc is frequently wasted. The present invention solves such a problem in the prior art. When the writing of user data is interrupted, the written user data and the user data management unit up to the previous session are managed. It is possible to automatically append to the next session, maintain logical consistency between the latest user data management unit and the user data unit, and set it to a recordable state. It is an object of the present invention to provide a write-once optical disc creation / playback system that can be avoided. Next, an embodiment of a write-once type optical disc producing / reproducing system according to the present invention will be described with reference to the accompanying drawings. And will be described in detail. FIG. 1 is a block diagram showing a configuration of an embodiment of a write-once optical disc creation / playback system of the present invention. In FIG. 1, the write-once optical disc creation / playback system includes a keyboard 1 and a mouse 2 for performing operations for writing (creating, mastering) data on a write-once optical disc and reading (playing back) the written data. ing. It also has a write data storage device 3 for storing write data necessary for mastering, reproduction and system control, such as a floppy disk, a magneto-optical disk, and a hard disk. Further, a RAM 4 for performing a working process for temporarily storing processing data, a CD-R image storage unit 5 for storing a CD-R image, and a CD for writing or reading data to or from a CD-R. -R writing / reading device 6. 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 are provided. A display 11 for displaying a screen on a CRT or the like under the display control of the display controller 10, a control program stored in the program storage unit 9, and a CD-R writing / reading stored in the program storage unit 9. It has a CPU 12 for performing control based on a reading program, and a bus line 13 for connecting various parts and exchanging data. Next, the operation of this embodiment will be described. An input operation for selecting a write data storage device 3 necessary for CD-R creation, reproduction, and system control from the keyboard 1 and the mouse 2 is performed, and an operation for selecting write data from the selected device is performed. The write data storage device 3 stores actual write data used for CDR creation, 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 necessary for CDR creation, and further writes the data in the CD-R writing / reading device 6, and when the reading is instructed under 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.
Data transfer, writing (creation) to CD-R, and reading (reproduction) are performed under the control of 2. The display control device 10 controls the display of the display 11 such as a CRT. The display control causes the data stored in the RAM 4 and the data such as windows and icons corresponding to various functions to be displayed on the display 11. it's shown. The CPU 12 inputs an 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 keyboard 1, the mouse 2, and the R connected to the bus line 13.
The AM 4, the display control device 10, and the CD-R writing / reading device 6 are controlled and their calculations are executed. FIGS. 2 and 3 are flowcharts showing the processing procedure in the operation of the reference example . 2 and 3,
In this routine, the write data storage device 3 is selected by the keyboard 1 and the mouse 2 to read out the write data, and CD-R format data is created based on the selected write data (steps S1, S2, S2). S3, S
4, S5, S6). Next, a CD-R image file in which the user data management unit and the user data unit are combined into one is created and stored in the CD-R image storage unit 5 (step S7). This CD-R image file is stored in a CD-R
An instruction to write through the writing device (CD-R writing / reading device 6) is issued by the keyboard 1 and the mouse 2 (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 user data section already written Is automatically determined (step S10). The CD-R writing device (CD-R writing / reading device 6) is instructed by the keyboard 1 and the mouse 2 to close this writing session (step S11). After creating the effective user data portion and the user data management section for managing the user data up to the previous session (step S12), it is instructed to write only the user data management section in the next session (step S12). Step S13). Next, the user instructs the CD-R writing device (CD-R writing / reading device 6) to operate the keyboard 1 and the mouse 2 to close the writing session (step S14). The CD-R image file in the flowchart is a data file after being converted to the CD-R format. In this file, a user data management unit is arranged at the head, and after this, the user data is stored. Are located. FIG. 4, FIG. 5 is a flowchart illustrating a processing procedure that put the operation of the embodiment. 4 and 5, this routine 2, the same processing until step S 8 in the routine shown in FIG. 3 is performed (step S
31, S32, S33, S34, S35, S36, S3
7, S3 8). In step S39, the user data management unit
The in write-out writing, system failure occurs, when the interrupt the write (Yes), CD-R writing device to close the writing session (CD-R writing and
An instruction is given to the reading device 6) with 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 unit of the session before the reading is written to the next session. That is, only the user data management unit of the previous session is copied (step S42). Then, the keyboard 1 and the mouse 2 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. Advantageous Effects of the Invention

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of an embodiment of a write-once optical disc creation / playback system of the present invention. FIG. 2 is a flowchart (1) showing a processing procedure in the operation of the reference example . FIG. 3 is a flowchart (part 2) illustrating a processing procedure in the operation of the reference example . 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. [Description of Signs] 1 keyboard 2 mouse 3 write data storage device 4 RAM 5 CD-R image storage 6 CD-R writing / reading device 9 program storage 10 display control device 11 display 12 CPU 13 bus line

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B ^7/ 00-7/0013 G11B 20/12

Claims (1)

(57) [Claim 1] Device selecting means for selecting a plurality of write data storage devices storing write data for writing on an optical disk, and a plurality of devices selected by the device selecting means Write data selecting means for selecting write data from the write data storage device, a user data portion actually written on the optical disk based on the write data selected by the write data selecting device, and the user data portion An image file creating means for creating an image file in which a user data managing section that manages the image data is integrated into one, and the optical disk in the order of the user data managing section and the user data section for the image file created by the image file creating means Writing means for writing data to the user data management unit; Interruption determining means for determining whether or not the writing has been interrupted; when the interruption determining means determines that the writing has been interrupted, a session closing means for closing the session in which the writing has been interrupted; and the session is closed by the session closing means. In this case, the user data management unit reading means for reading the data of the user data management unit of the session before the session in which the writing was interrupted, and the writing of the user data management unit data read by the user data management unit reading means is interrupted. And a user data management unit duplicating means for writing in a session subsequent to the session.