JPH02216621A - Data recording method for recordable optical disk - Google Patents

Abstract

PURPOSE:To eliminate a need for read-in information update operation and to easily and surely perform additional recording by preliminarily determining read-in information. CONSTITUTION:A tracking guide groove 2 having a prescribed depth is spirally formed on a read-after-write optical disk 1, and the disk 1 is provided with a read-in area 4 on the inner peripheral side of a data area 3 where music data or the like is recorded. Read-in information corresponding to initial data and read-in information corresponding to additional recording data are recorded in the read-in area 4 before recording of initial data, and initial data is recorded after recording of all read-in information, and read-out information is recorded, thus terminating the initial recording operation. At the time of recording additional recording data, start and end positions of the read-out information area are positioned to delete read-out information, and this data is additionally recorded. Thus, additional recording is easily and surely performed.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to data recording on optical discs that can be additionally recorded by the user (hereinafter simply referred to as recordable optical discs), such as so-called write-once optical discs and rewritable optical discs. It is about the method.

(Prior Art) In recent years, optical disks (optical disc-shaped recording media) have attracted attention as a medium that can record high-density and large-capacity information. In order to be able to play all of the desired recorded data from among the large amount of recorded data recorded on such optical discs when randomly accessed by players manufactured by different manufacturers, it is necessary to have the recorded data and its corresponding It is necessary that the read-in information (address data) is recorded in a so-called compatible format.

For example, a playback-only compact disc (hereinafter simply abbreviated as CD) in an optical disc for digital audio.
Now, a lead-in area is provided at the innermost circumference of a spiral track formed on a CD, and a data area is provided next to this lead-in area. Recorded data A, B, C, and D such as music data are recorded in this data area, and lead-in information such as time information and frame numbers for each of these recorded data A, B, C, and D is stored in the lead-in area. a,
Record as b, c, d.

(Problem to be Solved by the Invention) However, with conventional CDs, the user does not have to add recorded data (the recorded data to be recorded on the CD and the corresponding lead-in information are all determined at the time of cutting the master disc by the manufacturer). Therefore, there were no particular problems with recording in a compatible format.

However, when attempting to use a CD on which additional data can be recorded by the user (ie, a recordable CD) instead of the above-mentioned CD as a recording medium, the following problem arises.

In other words, when the user records multiple types of music data on one CD in several parts, for example, the first song is Mozart's music as the first song, and the second day and month is Beethoven's music as the second song. When additionally recording the music of... A problem arises in that lead-in information cannot be recorded until after all songs have been recorded on the CD.

As a method to solve this problem, for example, as disclosed in Japanese Unexamined Patent Publication No. 63-78343, lead-in information is temporarily saved in a special storage area on the disk, and the lead-in information is stored after all data has been recorded. A method is known in which area information is transferred to a lead-in area.

However, this conventional method does not solve the problem that the format is not compatible with a CD until the recording in the lead-in area is completed, and therefore data cannot be played back on a normal CD player until the final recording is completed. , the operation was troublesome.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a method for simply and reliably recording record data and corresponding lead-in information on a recordable optical disc in a compatible format.

(Means for Solving the Problems) A data recording method for a recordable optical disc according to the present invention has a lead-in area and a data area, and irradiates a recording beam to record music, image data, etc. as appropriate on a predetermined track. A recording method for a recordable optical disc that forms recording pits, the method comprising: prior to recording initial data, lead-in information corresponding to the initial data and lead-in information corresponding to additional recording data are recorded in a lead-in area; If you record all lead-in information, then record initial data, then record lead-out information to complete the initial recording operation, and then record additional data, the beginning and end of the lead-out information area Position the end position and delete that information, then perform additional recording of that data, record lead-out information after the additional recording is completed, complete the additional recording operation, and repeat the additional recording operation as necessary. It is characterized by this.

(Example) Hereinafter, a data recording method for a recordable optical disc according to an example of the present invention will be described in detail with reference to the drawings.

In this embodiment, as shown in FIG. 2, the write-once optical disc 1 has a depth of λ/8n (λ is the wavelength of the laser beam of the recording/reproducing optical head, and n is the refractive index of the groove filling material). The tracking guide 2 is formed in a spiral shape. Further, the write-once optical disc 1 is provided with a lead-in area 4 on the inner circumferential side of the data area 3 where music data etc. are recorded, and a lead-in area (TOC) indicating the recording position of the data area 3. Table or Con
tents) information is recorded in the lead-in area 4.

Here, the write-once optical disc 1 has the data area 3.
For example, if it is music information, it has a capacity that can record 60 minutes, and the first song starts playing from 00 minutes 00 seconds and ends at 05 minutes.
The performance ends at minute 57 seconds, the second song starts playing at 06 minutes 00 seconds and ends at 11 minutes 57 seconds, and the third song starts at 12 minutes 00 seconds and ends at 18 minutes 57 seconds. The procedure for recording data) in this data area 3 will be described below.

The lead-in information is determined so that the start and end times of the music information of the first to third songs are absolute addresses of the data area. Furthermore, in order to be able to additionally record new data after the recording of the music information is finished, start and end times are registered in advance at fixed time intervals (here, 1 minute intervals). In other words, you will have to make a reservation. To summarize the above, the first
It will look like a table.

Table 1: Contents of lead-in information Next, the recording procedure will be explained using FIGS. 1, 2, and 3. As shown in the flowchart in Figure 1,
The write-once optical disc 1 is loaded into a recording/reproducing device (Sl
), first record the information shown in Table 1 in the inner lead-in area 4 (S3)L, then record the first to third songs of the above music information from the beginning of the data area 3. (S4).

Furthermore, the lead-out information indicating the end of data area 3 is added to the magic 4 block (19 minutes 00 seconds to 19 minutes 57 seconds).
The series of recording operations ends after approximately 1 minute of recording (S
6).

Next, when adding new data, first read all the lead-in information (S7), and then
Accurately measure the positions of the recorded end of the area, that is, the start and end of the area where lead-out information is recorded (S8).
. Note that a method for determining whether an area is a lead-out information area can be realized by checking while reproducing a knob, for example, whether or not it is specified data as lead-out information. Next, in order to delete (invalidate) this lead-out information, the lead-out information area is overwritten with invalid data so that the data cannot be played back (S9).
). This invalid data is a data pattern in which the tracking servo does not come off after overwriting, but the data cannot be decoded (reproduced). Furthermore, new data is subsequently recorded in the reserved block N (L5 (unrecorded area). If necessary, data may also be recorded after the block No. 6. After that, the series of recording operations is completed by recording lead-out information indicating the end of data area 3 in the next block of all data-recorded blocks for about 1 minute.For example, if the last recorded block is block 6, , Magic 7 block (22 minutes 00 seconds to 22 minutes 5
7 seconds), the lead-out information will be recorded. Note that in this case, new data is added to two blocks.

After that, if new data is to be added, the above procedure will be repeated. That is, following the deletion of lead-out information, new data and new lead-out information are recorded. Although blocks of a fixed length are reserved here, it is also possible to reserve blocks of different lengths. In such a case, it is desirable to know the time length of the data scheduled to be recorded in advance.

Furthermore, it is desirable to record lead-out information also on the outermost periphery of the data area during initial data recording, as this can double prevent unexpected playback. Note that it is more desirable to form this information using pre-pits, since this allows the recording operation to be omitted.

Next, as an example of the present invention, the present invention was applied to a still image recording and reproducing system that allows additional recording, and its effects were confirmed. That is,
Patent application No. 1982-259119 has already been filed by the applicant.
Using the still image recording and reproducing device described in the specification of the issue, the above new data includes header code data indicating the beginning of one screen and still image data (for two screens) output from the frame memory. When I recorded this in blocks No. 5 and Nα6 and played it back, I was able to reproduce the still image without any problems. The recording optical disk drive used at this time was 0MS-100 manufactured by Nakamichi ■.
0, and the CD player for playback is Sony C
They were DP-333ESD and Yamaha CDX-800.

In this way, it is the most effective method when the data block length is fixed, such as still image data. Furthermore, although still image data is used in the above embodiment,
Needless to say, any digital data can be applied.

Note that if a rewritable optical disc is used as the recordable optical disc, the old lead-out information recording area can be effectively used again as a data recording area when additional recording is performed. This is convenient because the lead-in information corresponding to the data can also be changed as appropriate depending on the situation.

(Effects of the Invention) As described above, in the data recording method for a recordable optical disc according to the present invention, the lead-in information is determined in advance, so there is no need to update the lead-in information, and as a result, There is no need to create a compatible format until all data has been recorded.
Additional recording can be performed easily and reliably. Furthermore, since lead-out information is always recorded at the end of recording, there is no need to worry about the playback-only CD player running out of control. That is, a compatible format can be realized regardless of whether data is additionally recorded or not, and playback on a playback-only CD player is always possible.

[Brief explanation of the drawing]

FIG. 1 is a flowchart for explaining the procedure of the recording method of the present invention, FIG. 2 is a schematic diagram showing an example of the recording state of each area on the disk, and FIG. FIG. 2 is a schematic diagram for explaining the recording format of the recordable optical disc used. l...Writable optical disc 3...Data area 4.
...Lead-in area special liver agency director 1. Display of the case February 1999, J1 Mei's name Furuta Bunki-dono \\ Patent application No. 035.570 Data recording method for recordable optical disc 3, Person making the amendment Relationship with the case Patent applicant Location Kanagawa Prefecture 210 Nakanuma, Minamiashigara City Name
520) Fuji Photo Film Co., Ltd. 4, Agent Address: 6, 7th Floor, Hauraiya Building, 5-2-1 Roppongi, Minato-ku, Tokyo, Subject of Amendment: "Detailed Description of the Invention" column 7 of the specification, Amendment: Contents 1) On page 8, line 6 of the specification, "the above-mentioned first through" is amended to "the above-mentioned first through". 2) On page 9, line 6, "the above music" is corrected to "the above music." 3) On page 11, line 9, "the above procedure" is amended to read "the above procedure." 4) On page 12, line 6, "above new" is amended to "above new". 5) In the 17th line of the same page, amend "cases in which it is fixed" to "cases in which it is fixed and long." spontaneous correction

Claims (1)

[Scope of Claims] In a recording method for a recordable optical disc, which has a lead-in area and a data area, and in which information is appropriately recorded on a predetermined track by irradiating a recording beam, the lead-in area is Lead-in information corresponding to the initial data is recorded in the area, and the start and end ends of each additional data area that may be recorded during additional recording are positioned in advance, and the lead-in information corresponding to these positions is recorded. is recorded in the lead-in area, then the initial data is recorded next to this lead-in area, and lead-out information is further recorded next to this initial data, the initial recording operation is completed, and additional data is then recorded. When recording the lead-out information, locate the start and end positions of the area where the lead-out information is recorded, delete that information, then record the additional data, and then record the lead-out information. 1. A data recording method for a recordable optical disc, characterized in that the additional recording operation is terminated after the additional recording operation is completed, and the additional recording operation is repeated as necessary.