KR19990069203A - Storage medium recording management information for editing function and management information recording method - Google Patents

Abstract

A storage medium in which management information for an editing function is recorded and a management information recording method are disclosed. In order to perform the editing function without modifying the actual physical data recorded on the storage medium, management information consisting of title information, logical program information, and physical program information for managing physical data is rewritable and random access to the recorded data is performed. Can be stored in a storage medium. Therefore, the present invention can perform a quick and simple editing function by changing and updating only management information separate from the physical data without rewriting the actual physical data.

Description

Storage medium in which management information for editing function is recorded and management information recording method

The present invention relates to a storage medium in which management information for an editing function is recorded and a management information recording method in a rewritable and randomly accessible storage medium. In particular, only the management information is updated so that editing can be performed without rewriting recorded physical data. And a storage medium on which the management information to be updated is recorded.

In an image recording apparatus such as a video cassette recorder, in order to edit the image data, the data data has to be re-created and recorded in the final edited form. This is because the playback order is related to the order in which they were physically recorded, so that the physical structure must be changed for editing. That is, since the playback order is a structure combined with the physical structure, the physical structure must be changed according to the result of editing.

Therefore, in order to edit a desired form in a conventional video recording apparatus, there is a problem in that the data recorded on one tape is read and the read data is corrected in the playback order and recorded again on another tape.

In order to solve the above problems, an object of the present invention is to manage the actual physical data in order to perform editing functions such as deleting, merging, dividing, adding the program without changing the physical structure of the recorded data. It is to provide a storage medium that is recorded.

Another object of the present invention is to provide a recording method capable of performing an editing function by updating only management information without directly modifying recorded physical data.

In order to achieve the above object, a storage medium according to the present invention is a storage medium capable of randomly accessing rewritable and recorded data, for performing an editing function without modification of actual physical data recorded on the storage medium. And management information consisting of title information, logical program information, and physical program information for managing physical data is recorded.

In order to achieve the above another object, the management information recording method according to the present invention records information for managing physical data for a desired title recorded on a storage medium capable of random access to rewritable and recorded data. A method, comprising: recording information on a title recorded on a storage medium in title information block units, allocating one logical program for one title, and one logical program allocating one or more logical program blocks. Recording logical program information in units of logical program information blocks, and recording physical program information in units of physical program information blocks for linking logical program blocks forming a logical program with specific physical program blocks in a specific physical program. Including special Gong.

1 is a diagram showing a correspondence relationship between a physical program and a logical program immediately after recording.

2 is a structural example of a logical and physical program by program division.

3A and 3B are structural examples of logical and physical programs by program merging.

4 is a diagram illustrating a connection structure of management information for an editing function according to the present invention.

5A is a diagram showing the structure of a title information block proposed in the present invention, and FIG. 5B is a table summarizing the meanings of the items of the title information block shown in FIG. 5A.

6A is a diagram showing the structure of a logical program information block proposed in the present invention, and FIG. 6B is a table summarizing the meanings of items of the logical program information block shown in FIG. 6A.

7A is a diagram showing the structure of a physical program information block proposed in the present invention, and FIG. 7B is a table summarizing the meanings of the items of the physical program information block shown in FIG. 7A.

8A to 8C are diagrams showing an example of a structure of a physical program information block for better understanding of the present invention.

9 is a diagram showing a configuration example of a management information block in a management information file according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the storage medium and the management information recording method for recording the management information for the editing function according to the present invention.

In the present invention, a logical management information structure for managing a part of a program separately from image data of a physical concept in order to enable editing functions such as deleting a part of a program, merging two programs, adding a program, and dividing a program without directly modifying the image data. A storage medium having management information recorded therein and a method of recording the management information are proposed.

FIG. 1 is a diagram showing a correspondence relationship between a physical program immediately after recording and a logical program. When no editing is performed after video recording, the physical program and the logical program coincide with each other. Here, the data recorded from the start of recording the actual image data to the end point are gathered into a unit called a physical program. When the user wants to play, they are played in units called logic programs. Although physical data is described as image data for convenience of description, it is well known that audio data and user data may be included.

This physical program is again composed of physical program blocks. Initially, a physical program is composed of one physical program block, but is divided into a plurality of physical program blocks by a user's split action. The logic program is likewise composed of logical program blocks. Initially, a logical program is composed of one logical program block, but a plurality of logical program blocks are generated by a user's merging action. That is, the physical program block is generated when the physical program is physically connected as shown in FIG. 2, and the logical program block is the logical program block when combining when the physical programs are not physically connected as shown in FIG. 3B. Is generated.

Thus, if the user performs an editing function of dividing a logical program into two parts, there are two logical programs. However, the physical program is still one, but the physical program block is divided into two. The two logical programs correspond to each of the two divided physical program blocks.

2 shows a relationship between a logical program and a physical program by a program dividing action. In FIG. 2, the original physical program 1 is composed of a physical program block 1, but is divided into a physical program block 1 and a physical program block 2 when an editing function of dividing into two is performed. That is, the logical program 1 corresponding to the physical program 1 composed of the physical program block 1 is divided into the logical program 1 corresponding to the physical program block 1 and the logical program 2 corresponding to the physical program block 2.

3A and 3B show a relationship between a logical program and a physical program by a program merging action. In the program merging, the content of the logical management information that is updated depends on whether or not the physical program blocks corresponding to each logical program are physically connected.

First, as shown in FIG. 3A, when physical program blocks are physically connected, the physical program blocks are combined to form one physical program block. For example, two physical program blocks are composed of one physical program block (physical program block 1+ physical program block 2 = physical program block 1), and the two logical programs are also combined into one logical program (logic). Program 1 + Logic Program 2 = Logic Program 1). That is, combining physically connected physical program blocks transforms both a physical program and a logical program.

Next, in the case of combining logical programs that are not physically connected, as shown in FIG. 3B, for example, if logical program 1 and logical program 3 are combined, logical program 3 disappears and this logical program 3 is a logical program. Is added to 1. However, there is no change in the physical program blocks. However, since the logical program 3 corresponding to the physical program block 1 of the physical program 2 becomes the logical program block 2 of the logical program 1, the physical program is not deformed and only the logical program is deformed.

When playing, the program is played in logical program units. Therefore, first, the logical program 1 is played. At this time, the logical program 1 is again in logical program block 1 (physical program block 1 of physical program 1) and logical program block 2 (physical program block 1 of physical program 2). ), Logical program block 1 and logical program block 2 are reproduced, and then logical program 2 (physical program block 2 of physical program block 1) is reproduced.

Therefore, this distinction between physical and logical structures allows for the partitioning and merging of programs without actually updating the physical data.

In the present invention, management information having an information connection structure as shown in Fig. 4 as a structure of such logical information is recorded on the storage medium.

In FIG. 4, video information recorded on a storage medium is edited and reproduced in units of titles according to a user's selection. One logical program is assigned to one title. Each logical program is composed of one or more logical program blocks, and one logical program block is assigned one specific physical program block in a specific physical program. Therefore, when the user selects a desired title, the logical program assigned to the title is actually selected. More specifically, playback or editing of any title is such that a particular logical program block of a logical program assigned to this title is selected, which in turn results in a particular physical program block of a particular physical program being selected.

In order to manage such an information linking structure, an information data file storing management information having the above-described information linking structure must be created and managed in addition to a physical program in which actual image data is stored on a storage medium. Here, the storage medium may be a rewritable disc, for example, a disc for a digital versatile disc random access memory (DVD-RAM).

On the other hand, in the information data file, information related to a title, a logical program, and a physical program should be recorded. In the present invention, since the amount of each information increases or decreases according to an editing mode such as additional recording or deletion, the information data is shown in FIG. As shown in Fig. 7B, the information block is composed of a predetermined size (N × n bytes) of information blocks.

That is, this information block is divided into a title information block, a physical program information block, and a physical program information block. In the header of each information block, the division according to these three information block types is indicated.

First, a title information block is composed of a header and one or more title information elements, and as shown in FIG. 5A, a header indicated by a bold line has a value indicating that the information block is a title information block (Information_ID). The title information block number IBLK_no and the total number of titles number_of_TITLEs are included. Each title information element of the total number of titles recorded after the header is composed of a validity value (Valid), a title number (TITLE_no) and a logical program number (LPRGM_no) of this element.

Here, the title number (TITLE_no) indicates the reproduction order and is sequentially given from 1. The logical program number LPRGM_no indicates a logical program assigned to this title. For example, when the title number is 1 and the logical program number is 2, it means that the first title to be reproduced is logical program number 2. Changing the order of playback is simply implemented by changing the title number. If the validity value (Valid) is "0" during playback or editing, this element is ignored and the next element value is examined.

In this way, one title information block shown in Fig. 5A contains element values equal to the total number of titles contained in the header. If the number of titles is large and cannot be stored in one title information block, one title information block is added at a predetermined position of the information file to record information on the remaining titles therein. At this time, the header of the added title information block contains a value indicating that the information block is a title information block, a title information block number, and the total number of titles. The title information block number is a value obtained by adding 1 to the previous title information block number, and the total number of titles is equal to the total number of titles recorded in the header in the previous title information block. When the logical program information block and the physical program information block are added, they are updated similarly to the additional title information block mentioned above.

FIG. 5B is a table showing item meanings and values for the title information block shown in FIG. 5A for better understanding of the present invention.

Next, the logical program information block is composed of a header and one or more logical program block information elements, i.e., as shown in FIG. 6A, a header blocked by bold lines indicates that the information block is a logical program information block (Information_ID). , A logical program number IBLK_no, a logical program information block number L_PRGM_no, and a total number of logical program blocks number_of_LPRGM_BLKs.

After the header, there are logical program block information elements corresponding to the total number of logical program blocks. This logical program block information element represents information on the connection of a specific physical program to a specific physical program block for the logical program block constituting the logical program.

That is, the logical program block information element consists of a validity value (Valid) of this element, a logical program block number (LPRGM_BLK_no), a physical program number (PPRGM_no) and a physical program block number (PPRGM_BLK_no) constituting a logical program.

For example, suppose there are two total logical program blocks in the header of a logical program information block corresponding to logical program 1. FIG. Then, this logical program information block has two logical program block information elements following the header, and the logical program block information element describing logical program block 1 is shown to connect physical program block 1 of physical program 1 to the logical program block information element. If the program block information element 2 indicates the value of the physical program block 1 of the physical program 2, this means that when playing the logical program 1, the physical program block 1 of the physical program 1 is played, and then the physical program block 1 of the physical program 2 Means to play.

FIG. 6B is a table showing item meanings and values for the logical program information block shown in FIG. 6A to facilitate understanding of the present invention.

Finally, the physical program information block consists of a header and one or more physical program information block elements, i.e., as shown in FIG. 7A, the header block shown in bold lines has a value indicating that the information block is a physical program information block (Information_ID). ), A physical program information block number IBLK_no, a physical program number PPRGM_no, and a total number of physical program blocks number_of_PPRGM_BLKs.

Following the header, there are as many physical program block information elements as the total number of physical program blocks, which are valid values (Valid), physical program block number (PPRGM_BLK_no), start sector number (S_Sector_no), end sector number (E_Sector_no), and It is made up of the number of times linked to the logical program block (Linkage_no).

Here, one physical program block may be connected to one or more logical program blocks. When this connection count reaches "0", the area occupied by this physical program block is released and treated as an empty space.

FIG. 7B is a table showing item meanings and values for the physical program information block shown in FIG. 7A for better understanding of the present invention.

8A is a diagram illustrating an example of a correspondence relationship between logical programs and physical programs in order to help understand the structure of a physical program information block of the present invention. FIGS. 8B and 8C are physical diagrams shown in FIG. 8A, respectively. This is the structure of the information blocks of program 1 and physical program 2.

In FIG. 8B showing the structure of the information block of the physical program 1 shown in FIG. 8A, the header of the physical program information block has a value of "3" representing a physical program information block, a "1" of physical program information block number, and a physical program. The number "1" and the total number of physical program blocks "1" are recorded. Subsequently, " 1 ", which indicates that this physical program block is valid, is recorded, " 1 " as the physical program block number, " 1000 " as the start sector number, " 2000 " 2 "is recorded.

Here, the reason why the number of times connected to the logical program block should be recorded is because when one title is to be deleted in the edit mode, the physical program block constituting this title should not be deleted if it is a physical program block constituting another title. However, when deleting one title, the number of times connected to the logical program block of the physical program information block corresponding to the title is corrected. do.

When all the information about the physical program 1 composed of one physical program block is recorded, the rest of the predetermined physical program information block is filled with " 0 ". If a physical program consisting of a plurality of physical program blocks cannot be represented as one physical program information block, a separate physical program information block may be configured.

Similarly, in FIG. 8C showing the structure of the information block of the physical program 2 shown in FIG. 8A, the header of the physical program information block has a value of "3" representing a physical program information block, "1" of a physical program information block number, The physical program number "2" and the total number of physical program blocks "2" are recorded. Subsequently, " 1 " indicating that this physical program block is valid is recorded for the first physical program block element, " 1 " as the physical program block number, " 2001 " as the start sector number, " 3050 " Then, the number " 1 " connected to the logic program block is recorded. For the second physical program block element, a value of "1" is recorded, indicating that this physical program block is valid, the physical program block number "2", the start sector number "3051", the end sector number "4200", and the logic The number "2" connected to the program block is recorded.

Fig. 9 shows the structure of management information recorded on a recording medium while the information blocks are freely located in one file. That is, each information block can be expanded independently, and each information block in the actual information file is multiplexed.

When an information file is composed of a set of information blocks, three types of information (title information, logic program information, and physical program information) can be freely located and freely added or deleted regardless of their position in the information file. There is an advantage that can be.

In other words, if the information corresponding to one information block cannot be recorded, one information block can be added to the end of the information file. If the contents of the information block are all erased and not needed, only the information block is deleted. If it is located at the end of the file, it is actually deleted from the file. If it is in the middle of the file, the information block is invalidated by writing "0" in the header of the information block.

Therefore, the present invention records the logical management information data consisting of title information, logical program information and physical program information on a rewritable disc separately from the physical data to update only the management information data without modifying the physical data. Editing functions such as merge, delete, split, and add can be performed smoothly.

In addition, the management information recording method of the present invention can be performed by using a general optical recording / reproducing apparatus or in software, and records information about titles recorded on a rewritable disc in units of title information blocks, and records them in one title. One logical program is assigned to one logical program, and one logical program records logical program information for allocating one or more logical program blocks in logical program information block units, and the specific logical program blocks specific to the logical program blocks forming the logical program. Records physical program information for connection with a physical program block in units of physical program information blocks.

Here, the playback order can be changed by changing only the title number in the title information block. In the edit mode, the title information, the logical program information block and the information data in the physical program information block can be updated to combine, delete, divide, and add a desired program. It can be performed smoothly without modification of physical data.

As described above, the present invention has an effect that the editing function can be performed quickly and simply by changing and updating only management information separate from the physical data without rewriting the actual physical data.

Claims (15)

A storage medium having rewritable and random access to recorded data: Storage medium characterized by recording the management information consisting of title information, logical program information and physical program information for managing the physical data to perform the editing function without modification of the actual physical data recorded on the storage medium . The information management apparatus of claim 1, wherein the management information is recorded in a file separately from actual physical data, and each information block for the title information, logical program information, and physical program information is multiplexed in the file. A storage medium, which can be expanded and deleted independently in units of information blocks. The method of claim 1, wherein one title is assigned to one logical program, the logical program is composed of one or more logical program blocks, and one logical program block is assigned one specific physical program block in a specific physical program. Characterized in that the storage medium. 2. The title information block of claim 1, wherein the title information block consists of a header and one or more title information elements, the header comprising a value indicating that the information block is a title information block, a title information block number, and a total number of titles. Each of the number of title information elements is composed of a validity value of this element, a title number and a logical program number. The logical program information block according to claim 1, wherein said logical program information block consists of a header and one or more logical program information elements, said header indicating a value indicating that said information block is a logical program information block, a logical program number, a logical program information block number, and a total. Each logical program block information element of the total number of logical program blocks includes a valid value of the element, a logical program block number constituting the logical program, a physical program number, and a physical program block number. Storage media. 2. The apparatus of claim 1, wherein the physical program information block comprises a header and one or more physical program information block elements, wherein the header indicates a value indicating that the information block is a physical program information block, a physical program information block number, a physical program number, and It consists of the total number of physical program blocks, and each of the physical program block information elements of the total number of physical program blocks consists of the validity value of this element, the physical program block number, the start sector number, the end sector number, and the number of times the logical program block is connected. Storage medium, characterized in that. The physical program block of claim 6, wherein one physical program block can be connected to one or more logical program blocks, and when the number of times of connection to the logical program block becomes zero, the area occupied by the physical program block is released and processed into an empty space. Storage medium, characterized in that. A method for recording information for managing physical data for a desired title recorded on a storage medium capable of random access to rewritable and recorded data: (a) recording information on titles recorded on the storage medium in title information block units; (b) allocating one logical program for one title, the one logical program recording logical program information for allocating one or more logical program blocks in logical program information block units; And (c) recording physical program information for linking the logical program block forming the logical program with a specific physical program block in a specific physical program in units of physical program information blocks. 9. The method of claim 8, wherein the title information, the logical program information, and the physical program information are recorded as one file separately from the actual physical data, and each of the information blocks having a predetermined size in the file is multiplexed. Management information recording method which can be independently extended and deleted in units of the information block. 9. The apparatus of claim 8, wherein the title information block consists of a header and one or more title information elements, wherein the header comprises a value indicating that the information block is a title information block, a title information block number, and a total number of titles. Each of the number of title information elements is composed of a validity value of this element, a title number and a logical program number. The method of claim 10, wherein in step (a), And a reproduction order is changed by updating a title number of the title information block. 12. The logical program information block of claim 10, wherein the logical program information block comprises a header and one or more logical program information elements, the header indicating a value indicating that the information block is a logical program information block, a logical program number, a logical program information block number, and a total. Each logical program block information element of the total number of logical program blocks includes a validity value of the element, a logical program block number constituting the logical program, a physical program number, and a physical program block number. Management information recording method. 13. The apparatus of claim 12, wherein the physical program information block comprises a header and one or more physical program information block elements, wherein the header indicates that the information block is a physical program information block, a physical program information block number, a physical program number, and It consists of the total number of physical program blocks, and each of the physical program block information elements of the total number of physical program blocks consists of the validity value of this element, the physical program block number, the start sector number, the end sector number, and the number of times the logical program block is connected. Management information recording method, characterized in that. The management information recording method as claimed in claim 13, wherein only information data of the title information block, logical program information block, and physical program information block is updated in an edit mode such as program merging, division, deletion, addition or the like. 15. The method of claim 13, wherein one physical program block can be connected to one or more logical program blocks, and when the number of times of the connection to the logical program block becomes zero, the area occupied by the physical program block is released and processed as an empty space. Management information recording method, characterized in that.