JP4059424B2 - Disc data continuous recording / editing device and disc data continuous recording / editing program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disc-shaped recording medium such as an optical disc, and a disc data continuous recording / editing device and a disc data continuous recording / editing program for recording and editing data such as video data that require continuity in reproduction. About.
[0002]
[Prior art]
In general, recording media such as an optical disk for recording and reproduction using a semiconductor laser are widely used. Conventionally, in these recording media, spiral land tracks and groove tracks are provided on a disk, and these tracks are divided into a plurality of sectors, and data such as video and audio is sequentially recorded for each sector. Yes.
[0003]
[Problems to be solved by the invention]
However, in conventional recording media such as optical disks, data such as video and audio are sequentially recorded. Therefore, when relocating (editing) these data, there is no appropriate place to relocate, and the data is relocated. There is a problem that it takes a long time to arrange.
[0004]
In particular, when video data that is originally continuous is randomly arranged on the disk, if the seek time of the semiconductor laser is not sufficiently fast, the semiconductor laser randomly accesses the disk and continuously video data. There is a problem that cannot be played.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a disc data continuous recording / editing apparatus and disc data continuous recording / editing program capable of solving the above-described problems of the prior art and continuously reproducing data requiring editing after data recording. It is in.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a disk data continuous recording / editing device for continuously recording and editing data on a disk having a track divided into a plurality of sectors, wherein the sector or A data recording means for recording the data while providing an area for storing the edit data of the track, and a specific place on the disc as a reference when editing the data after adding the additional data to the data set the editing point, characterized in that and a data editing means for editing and copying the data in the editing point blank track renewable blank sector some have within a predetermined time after the editing points The present invention relates to a disc data continuous recording / editing apparatus.
[0007]
According to this configuration, when data is recorded by the data recording means, an area for storing edit data used for editing is provided in advance, and editing is performed in this area when editing is performed by the data editing means. Data is copied.
[0008]
According to the second aspect of the present invention, in order to record and edit data on a disk , the computer is provided with a disk capacity grasping means for grasping a disk recording capacity, and a sector size grasping means for grasping a sector size which is a divided area for storing data. A data size grasping means for grasping a data size to be recorded; when the data is stored as divided data in one sector, an empty area which is an area in which the data is not stored is set in the sector; Data division size processing means for processing the data by setting the division size of the divided data and the size of the empty area according to the capacity, the sector size, and the data size, and recording the divided data in the sector Editing means for editing using the empty area when editing the divided data It means, to a disk data continuous recording editing program to function as a.
[0009]
According to such a configuration, when the data is recorded on the disk by the data division size processing means, an empty area is provided in advance in the sector used for editing, and when the data is edited by the editing means, this sector is provided. Data is edited using the empty area.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
(Disc overview)
First, the outline of the disc will be described. FIG. 1 schematically shows the disk surface from the viewpoint of a recording format system. FIG. 1A shows a CAV (Constant Angular Velocity) system, and FIG. 1B shows a CLV (Constant Linear Velocity). : Shows the sector structure in the (linear speed constant) system. As shown in FIG. 1, the disk 1 is an optical disk, and on the surface thereof, a portion called a land that hits a convex portion and a portion called a groove that hits a concave portion are formed when viewed from the cross section of the disk 1. The land portion and the groove portion form spiral tracks when viewed from the disk surface. Each track is referred to as a land track 3 and a groove track 5. The land track 3 and the groove track 5 form a double spiral.
[0011]
The land track 3 and the groove track 5 are divided into a plurality of sectors which are areas for storing data. The number of sectors differs depending on the type of disk 1. The types of the number of sectors of the disk are, for example, DVD-RAM, DVD-ROM, CD, CD-R, CD-RW and the like.
[0012]
A set of data is stored for each sector of the land track 3 and the groove track 5. A group of data is data in which address data and information data are integrated. Hereinafter, a set of data is simply referred to as data D. A plurality of the data D are collected to form video data and music data. Data D is numbered as data D1 to data DN, and a collection of a plurality of data D is referred to as data AD (All Data).
[0013]
The data D is digital information of 0 and 1, and is composed of pits formed so that each sector can be distinguished from 0 and 1 by a semiconductor laser or the like. The pit is a depression having a minute length and a minute depth, and is generally schematically drawn as an elliptical black dot on the drawing. FIG. 2 shows the state of the disk surface in the case of CAV.
[0014]
A general disk 1 is a circle having a diameter of 12 cm, a thickness of 1.2 mm, a track pitch of 0.74 μm, and a pit length (shortest pit length) of 0.4 μm.
[0015]
In this embodiment, as shown in FIG. 2 (a), when data AD is recorded on the disk 1, data D1, data D2, data, etc. every other sector, such as sector A, sector C, sector E, etc. D3 is stored.
[0016]
Further, as shown in FIGS. 2B and 2C, data AD is stored only in the land track 3. Of course, the data AD may be stored only in the groove track 5.
[0017]
Alternatively, as shown in FIG. 3, the data AD is stored by dividing a sector in which the data AD is stored (used sector) and a sector not to be stored in one sector. For example, in the default (initial stage), the data AD is not stored for a half area in one sector. In other words, as shown in the figure, data is conventionally stored using all of one sector, but the area for storing data and the area not stored (sector empty area) are appropriately changed by software. It may be.
[0018]
The software in this case corresponds to one embodiment of the disc data continuous recording / editing program described in claim 2. An embodiment of this program will be described later.
[0019]
(Disc data continuous recording and editing device)
Next, the disk data continuous recording / editing apparatus will be described.
As shown in FIG. 4, the disc data continuous recording / editing device 7 includes a disc recording device 9, a data arrangement management device 11, a reproduction time calculation device 13, and an editing device 15, which are connected by a bus line. ing. The data recording means described in claim 1 corresponds to a combination of the disk recording device 9, the data arrangement management device 11, and the editing device 15. The data editing means includes the data arrangement management device 11, the reproduction time, and the like. This corresponds to a combination of the calculation device 13 and the editing device 15.
[0020]
The disk recording device 9 is composed of a RAM or HDD that can be read and written at high speed, and accumulates data AD to be recorded on the disk 1.
[0021]
The data arrangement management device 11 manages the arrangement of data D on the disk 1. At the time of editing, the editing point P is detected and the editing point P is set. The data arrangement management device 11 includes recording means for recording the address information of the data D and the position information of the sector in association with each other.
[0022]
The reproduction time calculation device 13 calculates the time (reproduction time) required for the data D at the editing point P set by the editing device 15 to access from the sector in which the data D immediately before the data D is stored. It is to calculate. If the reproduction time is shorter than the set reproduction unit time, it is determined that the data D is in a sector that is continuously reproduced (accessed) with the immediately preceding data D.
[0023]
The editing device 15 includes a disk rotation driving unit, a semiconductor laser driving unit, and a semiconductor laser irradiation unit, and the disk 1 receives each data D1, D2, D3,. At the time of editing, the data D at the editing point P is copied in accordance with an instruction from the data arrangement management device 11, and the data D is written in the designated sector. The semiconductor laser irradiation unit (head) seeks (horizontal movement) the portion surrounded by the broken line B shown in FIG.
[0024]
The editing device 15 controls the disk data continuous recording / editing device 7 and is connected to a personal computer (PC) 17 having a display means (monitor) via a data line.
[0025]
(Operations during recording using a disk data continuous recording and editing device)
Next, the recording operation using the disc data continuous recording / editing apparatus will be described.
When the disk 1 is a blank disk, the disk data continuous recording / editing apparatus 7 manages how the data AD stored in the disk recording apparatus 9 is recorded on the disk 1 via the bus line. The data AD is sent to the editing device 15 while being transmitted to the device 11. The editing device 15 rotates the disk 1 with the disk rotation driving unit, and the semiconductor laser irradiation unit causes the semiconductor laser irradiation unit to linearly move across the disk 1 with respect to the rotation direction of the disk 1, while the semiconductor laser irradiation unit The surface of the disk 1 is irradiated with laser light.
[0026]
When irradiating this laser beam, as shown in FIG. 2, each data D1, D2, D3... DN of the data AD is sent from a sector close to the outer periphery of the land track 3 or the groove track 5 or a sector close to the inner periphery. Irradiate (record) every other sector. That is, when numbers are assigned to the sectors along the circumferential direction, the data D is recorded by irradiating the odd-numbered sector or even-numbered sector only with the laser.
[0027]
If there is additional data d, the additional data d is randomly recorded in an empty sector in consideration of the case where the additional data d occurs frequently.
[0028]
(Operation during editing using a disk data continuous recording and editing device)
Next, the editing operation using the disc data continuous recording / editing apparatus will be described with reference to the flowchart of FIG.
[0029]
A user of the PC 17 sets the disc 1 in the disc data continuous recording / editing apparatus 7 and designates data D to be read (data D to be reproduced). Then, the time (ms) for reading the designated data D is presented on the display means (monitor) of the PC 17. If the presented time is longer than the predetermined time, the data D is rearranged (edited). Here, the predetermined time is a product of the reproduction unit time and the number of data D to be read. That is, when the reproduction unit time is 1/40 sec and the number of data D to be read is 80, the predetermined time is 2 sec (2 seconds).
[0030]
Alternatively, an instruction for optimally arranging the data AD to continuously reproduce all the data AD on the disc 1 is input to the disc data continuous recording / editing device 7 via the PC 17 (see FIG. 4).
[0031]
Then, the disk data continuous recording / editing apparatus 7 first detects the editing point P by the data arrangement management apparatus 11 and sets the editing point P (sector) (S1). The data D is detected in order from the smallest address data included in the data D, it is confirmed whether the data D is continuously arranged in the order of the address data, and the non-continuous (sector) becomes the editing point P.
[0032]
Next, the user of the PC 17 inputs the playback unit time to the playback time calculation device 13 of the disc data continuous recording / editing device 7 (S2), and the playback time calculation device 13 stores the playback unit time in the sector of the edit point P. The reproduction time is calculated from the sector in which the data D immediately before the data D is stored (S3).
[0033]
Then, it is determined whether or not the calculated playback time is within the input playback unit time (S4). If the playback time is within the playback unit time, the data D stored in the sector at the edit point P is used as it is. No change is made (S5).
[0034]
If the calculated playback time is not within the input playback unit time in S3, the playback unit time is within the playback unit time from the sector in which the data D immediately before the data D stored in the sector at the edit point P is stored. A position (sector) that can be reproduced is searched (S6).
[0035]
As a result of the search, it is determined whether or not there is a position (sector) that can be reproduced within the reproduction unit time (S7). If there is no position (sector) that can be reproduced within the reproduction unit time, delete (erase) is performed. It is determined whether there is any data D that can be accepted (S8). Data D that may be deleted (erased) is data D that has been copied to another sector, and is data D that is the copy source. If there is no data D that can be deleted (erased), the reproduction unit time is re-input (return to S2).
[0036]
If there is data D that can be deleted, the data D is erased (S9).
[0037]
If there is an empty sector at a position that can be reproduced within the playback unit time in S7, if the empty sector is deleted at a position that can be reproduced within the playback unit time after deletion, the data D at the editing point is stored. It is written in a position (sector) where copying and reproduction are possible (S10).
[0038]
Then, it is confirmed that there are two copies of the data D on the disk 1 (S11).
[0039]
Since the data D1 to DN are continuously reproduced, the above operations are sequentially and repeatedly performed on the data D1 to DN.
[0040]
According to this, when the data D is recorded by the data recording means (the disk recording device 9, the data arrangement management device 11, and the editing device 15), an empty sector used for editing is provided in advance. When data is edited by the data editing means (data arrangement management device 11, reproduction time calculation device 13, and editing device 15), the data D (additional data d) to be edited is copied to this empty sector. Even when there is additional data d that needs to be edited after recording the data AD on the disk 1, continuous reproduction can be performed when reproducing the data D or data AD to be read.
[0041]
That is, the continuity of data D is guaranteed. The continuity of the data D means that it can be surely read out in a time shorter than a predetermined time. In this embodiment, the predetermined time is calculated by the product of the reproduction unit time and the number of data D to be read out. It is time to
[0042]
As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this.
[0043]
For example, as shown in FIG. 6, data D may be recorded in every other sector of the land track 3 and every other sector of the groove track 5. Alternatively, as shown in FIG. 7, data (hatched portions) may be recorded in every other sector of only the land track 3, or as shown in FIG. (Hatching part) may be recorded.
[0044]
According to this, when recording data, empty tracks and sectors to be used for editing are provided in advance, and when editing, the data to be edited is copied to these empty tracks and sectors. Even if there is additional data that needs to be edited after recording the data, the data to be read or all of the data can be reproduced continuously.
[0045]
(Disc data continuous recording and editing program)
This disc data continuous recording / editing program is not the one described above, that is, the sector or track for storing the data D on the disc 1 is clearly divided in advance, and the location for storing the data D is not divided by hardware. In one sector, an empty area (an area in which no data is stored) is preset in software.
[0046]
The disc data continuous recording / editing program described below is developed in a main control device (not shown) of a personal computer (PC) 19 shown in FIG. In FIG. 9, reference numeral 107 denotes a conventional disk data recording / editing apparatus, in which a PC 19 and a disk data recording apparatus are connected via a data line.
[0047]
The disc data continuous recording / editing program includes disc capacity grasping means 19a, sector size grasping means 19b, data size grasping means 19c, data division size processing means 19d, recording means 19e, and editing means 19f. Has been.
[0048]
The disk capacity grasping means 19a is a program for grasping the total disk recording capacity of the disk 1 or the recordable capacity excluding the data amount of the accumulated data when some data is accumulated in the disk 1. .
[0049]
The sector size grasping means 19b is a program for grasping the sector size which is a divided area for storing the data D.
[0050]
The data size grasping means 19c is a program for grasping the data size of the data D to be recorded.
[0051]
When the data division size processing means 19d stores the data D as divided data in one sector, the data division size processing means 19d sets an empty area which is an area in which the data D is not stored in the sector, and sets the disk recording capacity, sector size and data size. According to the program, the division size of the divided data and the size of the empty area are set and the data is processed.
[0052]
The recording means 19e is a program for recording the divided data in the sector.
[0053]
The editing means 19f is a program for editing using the empty area when editing the divided data.
[0054]
According to this, when the data D is recorded on the disk 1 by the data division size processing means 19d, an empty area of a sector to be used for editing is provided in advance, and when the editing means 19f edits this data Since editing is performed using an empty area of the sector, continuity is guaranteed when data D is reproduced. Further, the conventional disk data recording / editing apparatus 107 can be used as it is.
[0055]
【The invention's effect】
According to the first aspect of the present invention, an area for storing edited data is provided in advance when data is recorded by the data recording means, and this area for storing edited data is provided when editing is performed by the data editing means. Since the data to be edited is copied to the disk, even if there is additional data that needs to be edited after recording the data on the disk, continuous reproduction can be performed when reproducing the data to be read or all the data.
[0056]
According to the second aspect of the present invention, when data is recorded on the disk by the data division size processing means, an empty area of the sector used for editing is provided in advance, and when editing by the editing means, Since editing is performed using the empty area of this sector, continuous reproduction can be performed when data is reproduced.
[Brief description of the drawings]
FIG. 1A is an explanatory view of a disc recorded by a CAV method as viewed from above in an embodiment of the present invention.
(B) In embodiment of this invention, it is explanatory drawing which looked at the disk recorded by the CLV system from the upper part.
FIG. 2A is a schematic explanatory diagram when data is written on a disk.
(B) It is explanatory drawing which expanded the principal part at the time of recording data only to a land track.
(C) It is explanatory drawing which looked at FIG.2 (b) from the side surface.
FIG. 3 is an explanatory diagram comparing a method of recording data with a conventional method.
FIG. 4 is a block diagram showing a configuration of an apparatus according to the embodiment of the present invention.
FIG. 5 is a flowchart showing the operation of the apparatus.
FIG. 6 is an explanatory view of a disc according to another embodiment as viewed from above.
FIG. 7 is an explanatory view of a disc according to another embodiment as viewed from above.
FIG. 8 is an explanatory view of a disc according to another embodiment as viewed from above.
FIG. 9 is an explanatory diagram of a disc data continuous recording / editing program;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disc 3 Land track 5 Groove track 7 Disc data continuous recording / editing device 9 Disc recording device 11 Data arrangement management device 13 Playback time calculation device 15 Editing device 17, 19 Personal computer 19a Disk capacity grasping means 19b Sector size grasping means 19c Data size Grasping means 19d Data division size processing means 19e Recording means 19f Editing means

Claims (2)

A disk data continuous recording and editing device for continuously recording and editing data on a disk having tracks divided into a plurality of sectors,
A data recording means for recording the data while providing an area for storing edit data of the sector or the track for recording the data;
After adding additional data to the data, set the editing point as a specific location on the disk as a reference when editing the data, blank sector some have playable within a predetermined time after the editing point is empty Data editing means for copying and editing the data at the editing point on the white track;
A disc data continuous recording / editing apparatus comprising: In order to record edit the data to disk, the computer,
Disk capacity grasping means to grasp the disk recording capacity,
Sector size grasping means for grasping the sector size which is a divided area for storing data;
Data size grasping means to grasp the data size to record,
When storing the data as divided data in one sector, set an empty area that is an area not storing the data in the sector, according to the disk recording capacity and the sector size and the data size, A data division size processing means for processing the data by setting a division size of the divided data and a size of the empty area;
Recording means for recording the divided data in the sector,
Editing means for editing using the empty area when editing the divided data,
Disc data continuous recording and editing program to function as.

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