MXPA00005659A - Information recording medium, apparatus and method for recording or reproducing data thereof - Google Patents

Abstract

An information recording medium suitable for optical discs such as DVD-RAM is provided for integrated management of data as objects in different kinds of AV formats. Also apparatus is provided for data recording and playing to the medium. The medium stores management information including program chain information (PGC information) (50, 70) defining the playback order of the objects, and object information (80) containing information relevant to the objects. The object information has general information (80a) of the object, attribute information (80b) and a map (80c) associating a playback time point of the object with an address on the optical disc of a component of the object to be played. The PGC information (50, 70) has cell information (60, 61,,,) including information (60a) about type of object, identification information (60b). The order of the cell information in the PGC information corresponds to the order in which the objects are played back.

Description

Medium of Recording of Information, Apparatus and Method to Record or Reproduce Data of the same Technical Field The present invention deals with information recording media with read / write capability. More specifically, the present invention relates to an information recording medium for recording multimedia data in different kinds of formats such as movie image data, still image data and audio data; and up._ data recorder and player apparatus for the medium. Related Request This request is based on application N °. 10-289089 filed in Japan, the content of which is incorporated herein by reference. BACKGROUND ART The development of the phase-change DVD-RAM disk has increased the recording capacity of an optical disk that can be re-recorded from approximately 650 MB to some GB. At present it is expected that the DVD-RAM__ becomes a medium not only for computers but also a means of recording / reproduction for audio / video technologies (hereinafter abbreviated AV) in combination with standardization of a coding technique of " Digital AV data called MPEG (MPEG2) Specifically, DVD-RAM is expected to replace the magnetic tape that has been a primary means of AV recording. _ (DVD-RAM) Advancement in high-density recording technology for optical discs with overwriting capability in recent years, has made it possible to store not only computer data and data but also image data Conventionally, the ridge and groove are formed on a recording surface of optical disk signals The signals were only recorded in the portion of the ridge or in the groove portion, after which the ridge group recording method was developed to record ales both in the ridge portion and in the groove portion, practically doubling the recording density. For example, a technique disclosed in the disclosed publication of Japanese Patent No. 8-7282 is well known. Another such technique is the CLV (Constant Linear Velocity recording) method to increase the recording density. From this technique, the zone CLV method was developed and is now commercially practiced for simplified control on request. The disclosed disclosure of Japanese Patent No. 7-93873 is a known example of this technique. With this development in the optical disc for greater recording capacity, a technological challenge is how to record AV data including image data, just the same, achieving new performances and functions that had never been done before by AV devices of previous techniques. It is expected that the development of the high capacity overwrite optical disc will replace the conventional tape for recording / reproducing AV data. Changing the tape to the disk will bring substantial changes in the function and performance of the AV equipment. The biggest change the disk would bring is the tremendous improvement in random access capability. If you have to access the tape randomly, you should consider the rewind time of the tape, which is usually a few minutes per reel. This access time is extremely slower than a search time (which is shorter than a few tenths of a millisecond) for the optical disk. Thus, in a practical sense, the tape can not be a means of random access. Said superb random access capability of the optical disc can effect distributed recording of AV data on the optical disc, which was not possible on conventional tape. Referring now to the accompanying drawings, Figure 1 is a block diagram of a DVD disc drive unit. The disk unit comprises an optical pickup 11 for reading data stored on a DVD-RAM 100 disc, an ECC (Error Correction Code) processor 12, a buffer of a channel 13, a switch 14 for selecting between the input and the output to and from the channel 13 buffer, an encoder 15 and a decoder 16. As shown in the figure, the DVD-RAM 100 uses a sector (1 sector = 2KB) as the smallest data recording unit, and a block of ECC (1 block of data). ECC = 16 sectors) is used as one. unit for error correction operation performed by the ECC processor 12. The channel buffer 13 is a buffer for storing AV data at a variable bit rate to effectively record AV data on the DVD-RAM 100 disc. Specifically , the read / write for the DVD-RAM 100 is performed at a permanent speed (Va), wherein the bit rate (Vb) of the AV data varies according to the complexity of the content (for example an image for data). Of video) . Buffer 13 absorbs the difference between these two bit rates. When the AV data has a permanent bit rate such as on a video CD, then the channel buffer 13 is not required. If this channel buffer 13 is used more effectively, distributed recording of the AV data on the disk 100 becomes possible. This will be described more specifically below, with reference to Figures 2a and 2B. Figure 2a is a diagram showing the address space on the disk. According to Figure 2a, the AV data is stored in a distributed manner, ie in a continuous area [a, a2] and in another continuous area [a3, a4_]. In which case the AV data can be continuously replayed by supplying the data stored in the buffer 13 for the decoder portion 16 while the search is made from point a2 to point a3.This situation is shown in Figure 2B. The AV data that starts from the location at is read, and then entered into the channel buffer 13 from the time ti, from which the channel buffer 13 starts to output the data.Thus, the buffer 13 accumulates data at a speed equivalent to the difference (Va - Vb) between the input speed (Va) to the buffer 13 and the output speed (Vb) from the buffer 13. This situation continues until the recovery reaches a2 represented by the point of time 12, at which time the amount of data in buffer 13 has accumulated the quantity B (t2) From time t2 to time tl3, until the operation of the data collector is resumed from the area starting at a3, the amount of data B (t2) stored in the channel 13 buffer is consumed "so that the decoder 16 continues to receive data.

In other words, when the amount of data ([al, a2]) read before the search exceeds a certain volume, then the AV data can be continuously supplied without interruption due to the search. The above description is for reading data from the DVD-RAM; . That is, a reproduction operation. The same thing happens with the writing data for the DVD-RAM, that is, for a recording operation. As described above, with DVD-RAM, continuous playback / recording is possible even if the AV data is stored in the distributed form, as long as the amount of data in each continuous record is greater than: a certain volume. In order to increase the advantages of the high capacity recording medium, ie the DVD-RAM, a UDF (Universal Disc Format) file system is used in the DVD-RAM as shown in Figure 3 to allow the access to. disk using a PC. The UDF information is recorded in the "Volume" area of the diagram. The details of the UDF file system are revealed in the "Universal Disk Format Standard". (Prior art AV equipment) Next, the prior art AV equipment commonly used by many users will be described. Figure 4 is a diagram showing »the__ relations. between conventional AV equipment, media and formats. For example, if a user wishes to watch a video program, a video cassette must be loaded into a VTR, and the program must be viewed using a television. If the user wants to listen to music, then a CD must be loaded into a CD player or a CD-radio-cassette player, and the program must be heard through a speaker system or through headphones. In particular, according to the conventional AV system, each format (video or audio) is coupled with a corresponding medium, respectively. For this reason, each time a program is heard or viewed, the user must select an appropriate medium and switch between the appropriate AV equipment for the medium. This is inconvenient from the user's point of view. (Digitization) - __ Meanwhile, along with the recent popularization of digital technology, a DVD video disc was introduced as. commercial software, while digital satellite broadcasting was introduced in the broadcast industry. These developments are supported by the innovation of digital technology, especially by MPEG as an internationally accepted standard. Figure 5 is a diagram showing the MPEG streams used in the DVD video disc and the aforementioned digital satellite broadcast. The MPEG standard has a hierarchical structure as shown in Figure 5. An important point to note is that the MPEG stream eventually used by an application in the packet medium such as the DVD video disc is different from the MPEG stream in the means of communication such as digital satellite broadcasting. The first one is called "MPEG program flow", where the data transfer is done through the package unit, reflecting the size of a sector (2048 bytes on DVD video disc) as the recording unit in the software commercial. On the other hand, the second one is called "MPEG transport flow", where the data transfer unit is a TS packet that has a size of 188 bytes, reflecting the application to ATM systems (Asynchronous Transfer Mode). MPEG is expected to eliminate the boundaries between different AV media, such as a universal coding technology for digital image and data signals. Without. However, due to said small differences described above, there is still no AV equipment or means capable of handling both the packet media and the media. (Changes introduced by DVD-RAM) The introduction of high-capacity DVD-RAM is a step forward in eliminating the inconvenience that users feel in conventional AV equipment. As previously described, the DVD-RAM incorporated with the UDF file system is accessible from the PC. Using different pieces of application software on PC, it is now possible to reproduce varieties of content such as video, still image and audio programs in a single piece of equipment, ie the PC. As shown in Figure 6, the user can move a cursor with a mouse ("mouse") in a file displayed on a screen and then double click (or a single click) to play the contents of the file such as a movie which is displayed in the upper left area of the screen. Such convenience is possible through the combination of flexibility offered by the PC and the large storage capacity offered by the DVD-RAM. With support for the increasing popularity of the PC in recent years, many different AV data "can be handled very easily on the PC as shown in Figure 6. However, although it is expected that the number of users of PC, the popularity and ease of operation of the PC are not as high and simple as home TV or video systems.Therefore it is an objective of the present invention to solve the following problems identified as obstacles to the optimal performance of the discs optics such as DVD-RAM, as a next generation AV recording medium.The world where the DVD recorder exists would be a__ world where the user can freely handle different formats and contents without worrying about the differences, using a single medium in a single AV device as shown in Figure 7. Figure 8 shows an example of a menu used in the DVD recorder, according to this menu, the user can select from 1) "Foreign Cinema" recorded digital satellite broadcast, 2) "The Telenovela. Matutina ", 3)" The End of the Final Cup "each recorded from conventional terrestrial broadcast, and 4) a dubbed Beethoven version of a CD, on a TV screen without worrying about the original medium or the recording format. The biggest problem to "develop such a DVD recorder is how to uniformly control AV data and streams of many different formats. No special method of handling will be necessary if only a limited number of existing formats have to be controlled. However, a management method capable of handling not only a number of existing formats but also new formats that will be introduced in the future in order to create the world of the DVD recorder mentioned above must be developed. Even so, certain differences between a future user interface and those incorporated in the uniform administration capability of the different AV streams can create a certain level of inconvenience similar to the inconvenience described in the prior art. Specifically, the user can execute the different operation depending on the content or format. Disclosure of the Invention ^ _ _ _ The present invention is made to solve the above problem, and it is therefore an objective thereof to provide an information recording medium capable of uniformly handling different kinds of AV streams, and providing a recording apparatus and a reproducing apparatus for said information recording medium In a first aspect of the invention, an information recording means is provided for recording targets that include at least one of the image data and the audio data. The target information includes identification information and map information for each target, the target information is identified by the target information, and the map information associates a target's playback time. with a logical address (or address on a disk) of a component of the objective in the middle. mponente reproduces in the time of reproduction.

The reproduction control information includes at least one cell information in a predetermined order. The cell information contains type information, identification information and reproduction section information. The type information indicates a class of the objective. The identification information identifies the objective. The information in the playback section specifies a section where the target is playing. The order of the cell information in the reproduction control information indicates the order in which the objectives specified by the respective cell information are reproduced. In a second aspect of the invention, an apparatus for recording data to the information recording medium comprises a unit for receiving an MPEG transport stream from an external equipment, a unit for reading the "random_access__indicator" (random access indicator) from the MPEG transport stream received and a unit to generate an access point information based on the "random access indicator". In a third aspect of the invention, an apparatus for recording data to the information recording medium comprises a unit for recording type information and the type information indicates a kind of objective for the reproduction section information. - ~ In a fourth aspect of the invention, an apparatus for reading data from the information recording medium comprising a pickup unit for reading target data recorded on the recording medium, a plurality of decoding units for deciphering the target data according to the class thereof, a selection unit for selecting one of the decoding units for the reproduction operation and a controlling unit for reading the target type information specified in the target information and controlling the selection units for select one of the decoding units according to the type information read. In a fifth aspect of the invention, a method for recording data to the information recording medium comprising the steps for receiving an MPEG transport stream from an external equipment, reading the "random access indicator" from the transport stream received MPEG and generating an access point information based on the "random access indicator" read. In a sixth aspect of the invention, a method for reproducing data from the information recording medium, comprising the steps for reading the target data from the recording medium, reading the information type of the reproduction control information in the recording medium and deciphering the target data read in accordance with the read type information. The recording medium according to the present invention makes it possible to only record but also to control integrally different AV formats on the same disc, thus making it possible to handle a variety of objectives each recorded in a different format on a recording medium. The apparatus and method for recording in accordance with the present invention makes it possible to create and record the type information to indicate the class of targets to be recorded, thereby making it possible to include the compatible front optical disc in the variety of formats of AV. -. The apparatus and method for reproducing in accordance with the present invention makes it possible to decrypt data from the target read in the external equipment even if the reproduction apparatus does not have the ability to decrypt the read objective data. Brief Description of the Drawings Figure 1 is a block diagram of a disc drive of a DVD recorder. Figure 2A is a diagram showing the disc space on a disc. Figure 2B is a diagram showing the accumulation of data in a channel buffer. Figure 3 is a diagram showing a file structure through the file system. Figure 4 is a diagram showing the relationships between the different classes of the AV equipment of the prior art and the corresponding means. Figure 5 is a diagram showing an MPEG program flow and an MPEG transport stream. Figure 6 is an illustration of a PC screen when accessing an AV data file on the PC. Figure 7 is a diagram showing the relationships that will be created by a DVD recorder. between the different classes of an AV equipment. Figure 8 is an example of a selection menu provided by the DVD recorder. Figure 9 a is a diagram showing the relationships between an AV file and a directory on a DVD ^ -RAM read-to-computer. ~~ - Figure 9B is a diagram showing the address space on the disk. Figure 10 is a diagram showing the relationships between an objective, target information and PGC information. ~~ Figure 11 is a diagram showing the management information derived from the target information for each flow. Figure 12 is a diagram showing the relationships between the film target (M_VOB), the movie objective information (M_VOBI) and the PGC information (PGCI). Figures 13a, 13B, 13C, 13D, 13E, and 13F are diagrams describing a time map according to the present invention. Figures 14A, 14B, 14C and 14D are diagrams, each of which shows each stage of the MPEG transport stream. Figure 15 is a diagram showing the relationships between an audio target (AOB), audio target information (AOBI) and PGC information (PGCI).

Figure 16 is a diagram showing the relationships between a still image objective (S_VOBS), the still image objective information (S_V0BS) and the PGC information (PGCI). _ Figure 17 is a diagram describing management information on a DVD-RAM. Figure 18 is a block diagram of a breeding model in accordance with the present invention. Figure 19 is a block diagram of the DVD recorder according to the present invention.

Figure 20 is a block diagram of a DVD player or data reproducing apparatus according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION -__ _ With reference to the accompanying drawings, a DVD-RAM, a DVD recorder and a DVD player will be described in detail as preferred embodiments of the present invention. (Logical Data Structure in DVD-RAM) The DVD-RAM according to the present invention makes it possible to record and control integrally AV data and AV streams of many different kinds of formats on a single disk. This allows you to record on a single disk AV streams of different formats including an earth broadcast TV program, a digital broadcast TV program in the MPEG transport stream format, a video stream taken by a video camera digital, a still image taken by a digital still camera and video data encoded in the MPEG program stream, and so on. In addition, the data recorded on the DVD-RAM can be played back in a certain sequence. For this end. The DVD-RAM in accordance with the present invention is provided with management information to handle the AV streams without depending on the format types of the AV data or the AV streams.

First, the structure of the data recorded in the DVD-RAM according to the present invention is described with reference to Figures 9A and 9B. A diagram of Figure 9a is a data structure of a DVD-RAM 100, which can be viewed by a file system. Figure 9B shows a structure of a physical sector in the disk 100. As they appear in the figure, a first portion of the physical sector is in the entrance area 31 that stores in it the standard signals necessary to stabilize the servomechanism, the signals of identification to differentiate from other means, etc. The input area 31 is followed by a data area 33 that stores logically available data. A last portion is an output area 35 that stores signals similar to those of the input area 31. A front portion of the data area 33 stores with volume information that is management information for the file system. Because the file system is a known technique, no details are described in the present. The file system allows the data on disk 100 to be handled as directories and the files are shown in Figure 9a. As understood in Figure 9a, all data stored by the DVD recorder is controlled under the VIDE0_RT directory immediately below the ROOT directory. The DVD recorder according to the present embodiment handles two kinds of files, namely AV files that contain audio and video data (AV data) and administration information files that contain information to handle the AV files. According to the example shown in Figure 9a, the administration information file is identified as "VIDE0_RT.IF0", where the AV files include a file "M_V0B.C0B" _ containing movie data, "D_VOB -VOB "containing data of digital broadcast images," AOB.AOB "containing audio data, etc. Each of these files will be described in detail below. It should be noted that according to the present embodiment, each AV flux is defined as an objective ("Objective"). Specifically, the targets may include a variety of AV streams such as the MPEG program stream, the MPEG transport stream, the audio stream, the still image data, etc. Each of these AV flows is summarized as the objective so that the management information of these AV flows can be defined as objective information (Objective I) of a universal format.

(Administration Information) First, the administration information will be described with reference to Figure 10. The administration information has the information of the objective 80 for managing recording places of the objective and attribute thereof, and program chain information ( PGC information) 50 and 70 that defines the playback sequence, the playback time and so on for the data to be played from the DVD-RAM. 1:00 The summary described above is possible for AV flows because they have a time attribute and other elements in common, although each of the different formats has certain differences from the others. AV streams that have a common format are stored in the same AV file in the recording order. The objective information (Objective 1) 80 includes general information about the target (Target Gl) 80a, attribute information of the target (Attribute I) 80b, and an access map 80c for converting the target's playing time into addresses in the disk. The access map 80c is necessary since the AV stream generally has two standards, ie a ~ time domain and a data domain (string of binary digits), which do not have perfect correlation with each other. For example, in an MPEG-2 video-encoded video stream that is now an international standard for video streaming, the use of variable bit rate (a method where the bit rate changes depending on the level of complexity of the video). an image) is becoming a main flow. According to this method, there is no proportional relationship between the amount of data at the beginning and the accumulated duration of reproduction time, and therefore random access can not be executed based on the time axis. In order to solve this problem, the information of the target 80 has the access map 80c for conversion between the time axis and the data axis (string of binary digits). As will be described later, an objective comprises a plurality of target units (VOBU), and therefore the access map 80c has data that correlates or associates the time region with the address region for each of the units of objective. The PGC information 50, 70 is the information for controlling the reproduction of the target, ie the image data and the audio data. The PGC information 50, 70 represents a data unit that is to be played when the DVD-player continuously plays the data. Specifically, each PGC information 50, 70 indicates an objective to be reproduced, and a reproduction sequence of cells 60, 61, 62 and 63. Each of cells 60, 61, 62 and 63 indicates any reproduction section of this particular objective. The cells 60, 61 will be described later in greater detail. The PGC information comprises two kinds of information comprising an original PGC information 50 and a user defined PGC information 70. The original PGC information 50 is automatically generated by the DVD recorder when recording the target so that all the targets Engravings are included. On the other hand, with the PGC information defined by user 70, the user can freely define the playback sequence. The information of PGC.50 and 70 has the same structure and function that it only differs in that the user defines the PGC information defined by user 70. In that way only the original PGC 50 information will be described in more detail. is shown in Figure 10, the information of The original PGC 50 includes at least one information of the cells. The cell information 60 specifies an objective to be reproduced and a reproduction section of the target. In general, the PGC 50 information records a plurality of cells in a certain sequence. This sequence of recording the cell information in the PGC 50 information indicates the sequence in which the targets specified in the respective cells are reproduced. Each cell, for example cell 60, includes. type information ("type") 60 a indicating the specified objective class, an identification of the objective (Target ID) 60b identifying the target, the information of the starting position ("Start") 60c on the axis of target time and information of the termination position ("Final") 60e in the time axis of the objective. When the data is reproduced, the information of cell 60 in the PGC 50 information is read successively, so that the target specified by the cell is reproduced by successively interpreted portions of the target represented by the reproduction sections specified by the respective cells. (Subclasses of the Objective Information) In order for the summary objective information to be applied to a real AV stream, a concretization must be provided. This principle should be easily understood as the class concept used in a goal-oriented model. More specifically, the understanding will be greater if the objective information is considered as a super class, and the more concrete structures created for each of the AV flows are considered as subclasses. Figure 11 shows these concretized subclasses. According to the present embodiment, as shown in Figure 11, the target information has subclasses defined as a movie subclass, a still image subclass, an audio subclass, and a digital broadcast subclass. Specifically, the following subclasses are defined as specific information: Film target information (M_VOBI) is defined as the target information for video data (in MPEG program stream). The audio target information (AOBI) is defined as the target information for audio and the target video image information (S_VOBI) is defined as the target information for still images. Each of the above is described below. The movie target 82 information includes the general information of the MPEG program stream. (M__VOB_GI) 82a, the film target flow information (M_V0B_STI) 82b, and a map of T 82c. The general information (M_VOB_GI) 82a includes the information of the film target identification (M_VOB_ID), the recording time of the film target (M_VOB_REC_TM), the start time of the film target (M_VOB_V_S_PTM) and the time information Termination of the film lens (M_VOB_V_E PTM). The movie target stream information (M_VOB_STI) 82b includes video stream information (V_ATR) having encoding attributes of the video streams, the number of audio streams (AST_Ns) and the audio stream information (A_ATR) ) that has coding attributes of the audio stream. Map T 82c includes a direction of driving the film target in the AV file, playing time (VOBU-PB_TM) and data size (VOBU_SZ) of each of the units of the film target (VOBU). The film target unit (VOBU) is the smallest to be accessed in the film lens (M__VOB) and will be described in detail later. The digital broadcasting target information (D_V0BI) 86 includes general MPEG transport flow information (D_V0B_GI) 86a, flow information (D_VOB-STI) 86b and a map T 86c. The general information of the digital broadcasting target (D_V0B_GI) 86a includes digital broadcasting target identification information (D_VOB_ID), digital broadcasting target recording time (D__VOB_REC_TM), digital broadcasting target start time information (D_VOB_V_S_PTM) and digital broadcast target completion time information (D_V0B_V_E PTM). Digital video objective flow information (D_VOB_STI) includes the information (PROVIDER ^ ENF) which contains additional information in the digital broadcast. Map T 86c includes a digital broadcast target driving address (D_VQB) in the AV file, _ playing time (VOBU_PB_TM) and size of, d_atos_ (VOBU_SZ) for each target unit (VOBU). The audio target information (AOBI) 88 includes general audio flow information (AOB_GI) 88a, flow information (AOBI_STI) 88b, and a map T 88c. The general flow information (AOBI_GI) 88a, flow information (AOB_STI) 88b and a map T 88c. The general audio stream information ~ (AOB_GI) 88 a includes audio target identification information (AOB_ID), audio target recording time (A0B_REC_TM), audio target start time information (AOB_S_TM), and audio target termination time information (A0B_E_TM). The AOB stream information (A0B_STI) 88b includes audio stream information _ (A_ATR) having coding attributes of the audio stream. The map T 88c includes a direction of driving the audio target in the AV file, playing time (AOBU_PB_TM) and_ size of the data (A0BU_SZ) for each audio target unit (AOBU). The audio target unit (AOBU) is the smallest access unit in the audio target (AOB) and will be described in detail later. The still image target information (S_VOBSI) 84 includes general still image information (S_V0BS_GI) 84a, still image flow information (S_V0BS_STI) 84b, and a S 84c map. The general still image information (S_VOBS_GI) 84a includes identification information of the still image objective (S_VOBS_ID), recording time of the still image objective (S_VOBS_REC_TM), number of start images of the still image objective (SVOBS_S_NO) and number of termination images of the still image lens (SVOBS_E_NO). The still image flow information (S_V0BS_STI) 84b includes the still image attribute information (V_ATR) that has information about a compression format of the still image lens. Map S 84c includes a fixed-image objective driving direction (S_V0BS) in the AV file, and the size of the data (S_VOB_SZ) for each still image. As described above, a flow information table corresponding to each type of AV flow can be defined as shown in Figure 11 by placing the summarized objective information in more specific data. (Correspondence between Objective Information and Cell Information) With reference to Figure 12 below, the film target information (M_MOBI), which is one of the concrete forms of objective information (Objective I), is Take as an example to see the correspondence with the cell information. ~~ When the type information (Type) specified in the Cell Information has the value "M VOB", this cell corresponds to the movie target. Similarly, when the type information has the value "D_VOB", then the cell corresponds to a digital broadcast target, and when the type information has the value "AOB", then the cell corresponds to an audio target. ~~ Based on the Objective Identification (ID of Objective), you can find the objective information (VOBI) corresponding to the identification (ID). The target ID has a one-to-one correspondence with the film target ID (M_VOB__ID) contained in the general information (M_V0B_GI) of the film target information (M_V0B_I). As described above, the target information corresponding to the cell information can be retrieved using the type information (Type) and the target ID (Target ID). The information of the start position (Start) in the cell information corresponds to the start time information (M_VOB_V_S_PTM) of the movie target information. When the two values indicate the same time, it is indicated that the cell is the first position that is reproduced from the film target. On the other hand, when the start position information (Start) has a value higher than that of the start-time information (M_VOB_V_S_PTM), it is indicated that the cell is to be played as an intermediate portion of the movie target. In that case, the reproduction of the cell is delayed from the top of the objective by the difference (time difference) between the start time information (M_VOB_V_S_PTM) and the start position information (Start). The same relationship exists between the cell termination position information (Termination) and the termination time information (M_VOB_V_E_PTM) of the film target. As described above, the start and end of the reproduction of a given cell can be obtained as relative points of time within the target using the start information (Start) and the termination information respectively in the cell information, and the start time information (M_VOB_V_S_PTM) and the termination time information (M_VOB_V_E_PTM) respectively in the general information (M_V0B_GI) of the movie target information (M_VOBI). The T map of the film target is a table comprising a playback time and the size of the data for each unit of the film target (VOBU). By using the map T, the relative reproduction start time and the relative reproduction termination time of a given cell within the film target rail described above can be converted into address data. Now, the address conversion using the aforementioned map T will be described specifically with reference to Figures 13a, 13B, 13C, 13D, 13E and 13F. Figure 13a shows the film objectives (M_VOB) representing video that is displayed on the time axis. Figure 13B shows the time map comprising the length of reproduction time and the size of the data for each unit of the film target (VOBU). Figure 13C shows the film target expressed on the data axis (series of sectors). Figure 13D shows the series of packets as an enlarged portion of the film target. Figure 13E shows a video stream. Figure 13F shows an audio stream. The movie target (M_V0B) is a stream of MPEG programs. In the MPEG program stream, a video stream and an audio stream are assembled in a packet (PES packet) and a plurality of packets (PES packets) are packaged in sequence. In the example, a package contains a package (PES package), and a package is assigned with a sector (= 2048B) for easier access. In addition, packaged video packages (V_PCK) and audio packages. (A_PCK) are multiplexed in a single stream. All of these are illustrated in Figure 13C, 13D, 13E and 13F. In addition, a stream of MPEG systems (a general term for the flow of programs and transport flow) contains time clocks for synchronized reproduction of the multiplexed video and audio streams. The dataset clock for the program flow is PTS (Presentation Dater Clock) that indicates the time in which the table will be represented. The movie target start time information (M_VOB_V_S_PTM) and the movie target termination time information (M_VOB_V_E_PTM) mentioned above are time information obtained from the PT? . On the other hand, the time stamp for the transport flow is PCR (Clock Reference for Program) that indicates the time of entry of the data to the buffer. The film target unit (VOBU) is described below. The film target unit (VOBU) is the smallest Access Unit within the film objective (M_V0B). In order to perform video compression with great efficiency, the MPEG video stream uses not only video compression using spatial frequency characteristics within an image frame but also image compression using motion characteristics between the frames, ie movement characteristics in the time axis. This means that the expansion of a video frame requires information on the time axis, that is, information about a future video frame or a past video frame is required, or that the video frame "can not be enlarged by itself. In order to solve this problem, in the MPEG video stream, a video frame (called Table I) is inserted that does not have movement characteristics in the time axis approximately every 0.5 seconds, achieving greater random accessibility. The movie object unit (VOBU) includes some of the packets of a packet that contains the main data of the following I-box: In this way, the map T comprises the size of the data (the number of packets) of each unit of the target (VOBU) and the playing time (the number of fields) of the video frames within the target unit (VOBU) For example, an assumption is made that the Start value in the cell differs from the value of the info Start time (M_VOB_V_S_PTM) of the movie target for one second (60 fields). Now, the playback start time of each unit of the target in the film target (M_V0B) can be obtained by accumulating the playing time (length) of each target unit (VOBU) on the map T from the first film target . Similarly, the address of each target unit in the film target (M_VOB) can be obtained by accumulating the size of the data ~ (e ~ the number of packets) of each target unit of the first target unit.

According to the present embodiment, the first three objective units (VOBU) of the film target (M_VOB) have 24, 30 and 24 fields, respectively. Thus, from the previous calculation method, the video frame after one second (60 fields) ~ from the top of the film target (M_VOB) is known to be included in the third unit of the lens (VOBU # 3) . Likewise, the starting address of the third unit of the target (V0BU # 3) is known to be the 223 sector of the head of the target because these target units (VOBU) respectively have data sizes of 125, 98 and 115 sectors. Adding the obtained address value to the address value for 5010 sectors that is the home address ^ (ADD_0FF) of M_V0B within the AV file provides the starting address of the data to be played. In the previous example, the assumption is made that the video frame which is field 60 of the upper part of the film target (M_V0B) will be reproduced. However, as it is. mentioned earlier, the MPEG video does not allow decoding or playback from any of the video frames. For this reason, playback starts from the top of the target unit (VOBU) changed by 6 separate fields in field 60 so that playback starts from the I-frame. It should be noted that a reproduction can be started exactly from the video field specified by the cell by deciphering the 6 previous fields without unfolding. The method described above can also provide reproduction termination time of the film target corresponding to the termination location in the cell information, and the direction of the film target in the AV file. ~~ Next, the digital broadcast objective information (D_VOBI) is described. The digital broadcasting target information is basically the same as the film target information since the digital broadcasting target is a subclass derived from the target information,. However, a big difference is that the film target (M__VOB) is created by recording an earth broadcast. Specifically, while the film target is in an AV stream encoded by the recorder itself, the digital broadcasting target (D_V0B) is not an AV stream encoded by the recorder itself since the transmitted digital broadcast target data from a digital broadcasting satellite they are recorded directly. More specifically, when the coding is done by means of the recorder, the internal structure of the flow is clearly known; however, when the data is a result of direct recording, the internal structure is not known unless the flow is not analyzed, and therefore it is impossible to make the T map. It is possible to analyze the transport flow of MPEG supplied to through digital satellite broadcasting. In the present embodiment, the map T is created using the information within the MPEG transport stream as described below. Figure 14a shows a transport flow of MPEG. Figure 14B shows an enlarged view of the transport pays. Figure 14C shows PES pays. Figure 14D shows a video stream. As shown in Figure 14a, the MPEG transport stream comprises a series of transport packets. The transport package includes a header, an adaptation field and a useful load. The adaptation field includes a random access indicator ("random_access indicator"). The random access indicator indicates that in this transport packet or the next transport packet (more precisely, the transport packet that has the same program ID), a next PES packet (ie the PES packet where the first byte of the PES package appears first) contains an access point of the video stream or the audio stream. Particularly, for the video flow, this indicates that the table-I is included.

This random access indicator can be used to determine the video target unit, and create the map T. The transport packet has a fixed size of 188 bytes. Therefore, a plurality of "transport packets" (2048 bytes / 188 bytes = 10 TS packets) are recorded in a sector of the DVD-RAM comprising 2048 bytes, although it is possible to handle as 1 packet = 1 sector in the target of film (M-VOB), it is impossible in the objective of digital diffusion (D_VOB) .The reading / writing of data in the DVD-RAM can be done only through the sector, therefore even in the objective of digital diffusion, the information on the map T is prepared from the playing time duration of the film target unit (VOBU) expressed by the number of video fields, and the data size of the film target unit is "expressed by the number of sectors. Due to the above reason, the accuracy of the address is not ensured in map T when it is defined that the film target unit goes from a transport package to the next transport package. Therefore, the unit of the film object (VOBU) is defined using the sector that contains the transport package. A PROVIDER_INF field of the digital broadcast objective flow information (D_VOB_STI) includes an ID to identify a particular broadcasting company and information related to each broadcasting company. Now with reference to Figure 15, the description for audio target information (AOBI) is made. Again, as a subclass derived from the target information, the audio target information is basically the same as in the case of the movie target information. A big difference, however, is that the audio target is a target for the audio system only and is not formatted in the MPEG system stream. Next, the description is made in greater detail. Because the audio target is not formatted in the MPEG system stream, date clocks are not included in the audio target. Therefore, there is no reference time to indicate the start time of the reproduction or the termination time of the reproduction of the cell or the target. Thus, the start time of the audio target (A0B_A_S_TM) in the general audio target information (AOBI_GI) is entered with 0, as the audio target termination time (A0B_A_E_TM) is entered with the duration of playing time. In addition, each of the Start and End fields in the cell information is entered with relative time within the audio target. ~~ Another difference of the audio data of the MPEG video data is that the reproduction of the audio data can be started in any audio frame unit. Therefore, the audio target unit (AOBU) can be defined as the audio frame multiplied by any integer number. If the audio target unit is too small, however, a huge amount of data must be handled on the T map. So, the audio target unit is made to be almost the same unit length of the objective of the film objective, which is approximately 0.5 seconds. Map T manages the duration of playback time and the size of the data for each audio target unit. Referring now to Figure 16, the description is of the still image objective information (S__V0BSI). From -new, as a subclass derived from the target information, the still image target information (S_VOBSI) is basically the same as in the case of the movie target information. However, a big difference is that the objective of the still image is an objective that includes data from a plurality of still images, and that the still image objective is not formatted in the MPEG system stream. More details will be described in the following audio target information. The still image, unlike the movie or sound, has no time information. Thus, the fields of the start information and the termination information in the general still image objective information (S_VOBS_GI) are entered with a number representing the start-up still image (Start_Video) and a number representing the last still image (End_Video) respectively. In addition, the Start field and the End field in the cell are entered with respective frame numbers within the still image objective instead of the time information. The smallest access unit in still images is the frame of the still image. Thus, the map S is defined as the access map, which is a table containing the size of the data (S_VOB_SZ) of each still image. The general data structure described heretofore is shown in Figure 17. All management information is shown on the DVD-RAM. With reference to Figure 17, all the administration information will be described below. The DVD-RAM according to the present embodiment is provided with general information of video administrator (VMGI) 90 and a variety of information tables 92, 94, 96 and 98 in addition to the information of PGC 50 and 70. The VMGI 90 is the administration information for the entire disk, which contains the pointer information, is "say the starting addresses, of the original PGC information 50, the PGC information defined by user 70, and the variety of the tables of file management 92, 94 ... Access to these tables 50, 70, 92, 94,,, is made possible by reference to the pointer information.Now, the file management tables 92, ~ 94, 96 and 98 which are shown in Figure 17 will be detailed below: Each of these tables 92, 94, 96, 98 is a table for management data files that comprises the objectives and is prepared for each class of objectives. Table 92 is for managing archives of film containing film objectives, in that table 94 is for managing still image files containing still image lenses. As described above, the target information is identified based on the target ID stored in the cell information in the PGC information. During the management of this operation the information is identified by means of the file management table 92, 94, 96 or 98. For this purpose, each of the file management tables 92, 94, 96, 98 contains information about the number of objectives under administration, the ID of the objectives, the size of each objective information, etc. For example, when the target ID shows a sequence order, based on this target ID specified by the cell information, it is possible to determine a target order specified by the cell information in the target information managed by the table. of file management. Then, based on the order of this certain target information and the size of the file, a compensation based on the starting address of the file management table can be calculated to obtain a logical address of this certain target information. As shown in Figure 17, the movie file management table 92 is a table for_ managing movie files containing movie objectives. The movie file management table 92 includes the movie target information (M_V0BI) 92a, 92b,. . . , and the table management information (M_AVFITI) 92h containing the number of movie target information and the size of the movie targets administered by table 92. The disc successively records the same number of movie target information as the movie target information number contained in the 92h information. As mentioned earlier, the film target information 92a,,, each includes the general information (M_VOB_GI), the flow information (M_V0B_STI), and the map T. In addition, the map T includes the deployment time and the size (VOBU_ENT) for each objective unit (VOBU). The same structure is used in a table (S_AVFIT) 94 for managing the still image files containing fixed image objectives, a table (D_AVFIT) 96 for managing the digital broadcast files containing digital broadcasting objectives, and a table ( A_AVFIT) 98 for management audio files that contain audio targets. The original PGC information 50 contains the cell information 61, 62, 63,, in the order of reproduction. The cell information contains information corresponding to the target information (type and target ID) and the reproduction section information (Start and End) within the target. The reproduction section information that appears in the cell can be converted to address information of the target substance through the access map in the target information. As described above, the information from The original PGC 50 differs from the user defined PGC information 70 only in that the original PGC information 50 is automatically generated by the recorder so that all "the targets recorded on the disc will be reproduced while the PGC information is defined. per user 70 is information where the user can freely define the reproduction sequence, so that the PGC information defined by user 70 has the same structure as the original PGC information 50. In short, summarizing the information for managing the information flows. AV, it becomes possible to define the reproduction control information such "as the PGC information and the cell information without relying on the peculiar information for a given AV flow format, making it possible to handle AV flows integrally. In this way, the environment in which users can play AV data without worrying about the AV format can be carried out. In addition to using the data structure described above, a new AV format can easily be incorporated into the data structure in DVD-RAM by simply defining the management information derived from the target information in the same way as the others. existing AV formats. (Player Model) _ Referring now to Figure 18, a player model for reproducing the previous optical disc is described. As shown in Figure 18, the player comprises a sensor 1701, an ECC processor 1702, a channel buffer 1703, a PS 1705 decoder, a still image decoder 1708, a switch 1710 and a controller 1711. The sensor Optical 1701 reads data from the optical disk 100. The ECC 1702 processor performs error correction and other operations to read the data. The channel buffer 1703 tentatively stores the data after error correction. The PS 1705 decoder decodes to produce program streams such as the movie target (M_VOB). The decoder of TS 1706 decodes to interpret transport flows such as digital broadcasting target (D_VOB). The audio decoder 1707 decodes to play the audio target (AOB). The still image decoder 1708 decodes to reproduce the still image lens. Switch 1708 switches between decoders 1705, 1706,,, for data entry. The 1711 controller controls each component of the player. The data recorded on the optical disc 100 is read by the sensor 1701, passed through the ECC processor 1702, and stored in the channel buffer 1703. The data stored in the channel buffer 1703 is then input into one of the decoders 1705, 1706, 1707 and 170.8-, and then they are -descifrados to be removed ~ from there. In this exchange operation, the controller 1711 verifies the read data and sees the type information of the cell information in the PGC information by providing the playback sequence according to the method described above. The switch 1710 is controlled to switch according to the type information so that the information read is sent to an appropriate decoder.

The player of the present embodiment further comprises a digital interface 1704 for supplying the AV stream to the external equipment. Through this interface with. an appropriate communication protocol such as IEEE1394 and IEC958, the AV stream can be fed to the external equipment. This is useful especially when a program of a new AV format is output through the digital interface 1704 that is to be played on the external AV equipment without using the decoders in this player. On the other hand, to support a new AV format in this player, a new 1709 decoder that adapts to the new AV format can be attached "to the channel buffer 1703 in the same way as the other existing decoders 1705 - 1708 . (Recording Operation by DVD Recorder) Next, reference is made to Figure 19 to describe the structure and operation of a DVD recorder in accordance with the present invention for reproducing / recording the previous optical disc. - _ As shown in the figure, the DVD recorder comprises a user interface 1901, a system controller 1902, an analog tuner 1903, an encoder 1904, a digital tuner 1905, an analyzer 1906, a display apparatus 1907 and a decoder 1908. The user interface 1901 provides a display for the user and receives the user's requests. The 1902 system controller manages and controls everything in the DVD recorder. The 1903 analog tuner receives VHF and UHF waves. The encoder 1904 converts the analog signals into digital signals to encode the digital signal in a stream of MPEG programs. The 1905 digital tuner receives digital satellite broadcast. The 1906 analyzer analyzes an MPEG transport stream sent from the digital broadcasting satellite. The display apparatus 1907 includes a TV monitor and a speaker system. The decoder 1908 decrypts the AV streams. The decoder 1908 includes the decoders shown in Figure 18. The DVD recorder further comprises a digital interface 1909, a channel buffer 1910 for temporary storage of the data to be written, and a 1911 unit for writing data in the_ DVD-RAM 100. The 1909 digital interface is an interface for outputting external equipment through a protocol such as IEEE1394. In the DVD recorder having the above configuration, the user interface portion 1901 first receives the user's request. The user interface 1901 transmits a request from the user to the system controller 1902. The system controller 1902 interprets the request in commands to be sent to the appropriate modules. When the user's request is for recording an analog broadcast program, the system controller 19O2 requests the tuner 1903 to receive the program, and the encoder 1904 encodes it. The encoder 1904 performs video coding, audio encoding and system coding in the AV data received from the analog tuner 1903 to output the encoded data to the channel buffer 1910. The encoder 1904, at the start of the encoding operation, sends the playback start time (M_VOB_V_S_PTM) of the encoded MPEG program stream to the system controller 1902, and then in parallel with the encoding operation, sends the duration information time and size of the film target unit (VOBU) to the system controller 1902 as the source information for creating the map T. Then, the system controller 1902 issues a recording request to unit 1911, so that the unit 1911 take the data stored in the channel buffer 191.0 and record this information on the DVD-RAM 100. At that time, the system controller 1902 indicates to the unit 1911 where to store the information on the disk 100 in accordance with the file system placement information. The termination of the recording operation is requested by the user through a stop request. The user stop request is transmitted through the user interface 1901 to the system controller 1902. The system controller 1902 then issues the request to stop the analog tuner 1903 and the encoder 1904. Upon receipt of the request for stop of the system controller 1902, the encoder stops the encoding operation, and sends the playback stop time (M_VOB_V_E_PTM) of the last encoded MPEG program stream to the system controller 1902. After the encoding operation is completed, the system controller 1902 creates the movie target information (M_V0BI) based on the information received from the encoder 1904. Then the system controller 1902 creates the cell information corresponding to the movie target information (M_VOBI) _. important point here is that the type information in the cell information must be specified as "M_VOB". "described above, the information in the cell information is configured without depending on the objective of the film (M_VOB), and all the information that depends _ "on the film target (M_V0B) is based on the movie target information (M_V0BI) .Therefore, an error in recognizing the type information in the cell information will lead to the inability to execute normal playback, possibly resulting in system crash Finally, system controller 1902 requests unit 1911 to finish recording the data stored in channel buffer 1910, and what record information Movie Objective (M_VOBI) and cell information The 1911 unit records the remaining data in channel buffer 1910, the movie target information (M_V0BI) and the cell information in the DVD-RAM subsequently completing the operation This is a description of a case where the user requests the recording of a digital broadcast program. digital fusion that is transmitted through the 1901 user interface to the 1902 system controller. The 1902 system controller then requests the digital tuner 1905 that records and the 1906 analyzer that analyzes the data received. An MPEG transport stream sent from the digital tuner 1905 is sent through the analyzer 1906 to channel buffer 1910. Analyzer 1906 first brings "MPEG transport stream" the start time information (D_VOB_V_S_PTM) as necessary information to generate the digital broadcast target information (D_VOBI) and sends this information to the controller of system 1902. Next, the analyzer 1906 determines the film target unit (VOBU) in the MPEG transport stream, and sends the time duration and the size of the film target unit as necessary information to create a - map T for the 1902 system controller. It should be noted that the film target unit (VOBU) can be determined, as already described, based on the random access indicator (random_access_indicator) in the field of the request contained in the TS packet header. Then the system controller 1902 outputs a recording request to the unit 1911. Then the unit 1911 collects the data stored in the buffer of channel 1910 and records the data in the DVD-RAM 10Q__ At this time, the System controller 1902 also informs unit 1911 where it should record the information on disk 100, based on the file system placement information. The termination of the recording operation is indicated by the user through a stop request. The user stop request is transmitted through the user interface 1901 to the system controller 1902. The system controller 1902 then issues the stop request to the digital tuner 1905 and the analyzer 1906. The analyzer 1906, upon receiving the request The system controller stops 1902, stops the analysis operation and sends the deployment completion time (D_VOB_V_E_PTM) of the film target unit (VOBU) of the last analyzed MPEG transport stream to the 1902 system controller. the termination of the digital broadcast reception, the system controller 1902 creates the digital broadcast objective information (D_VOBI) based on the information received from the 1906 analyzer, and then creates the cell information corresponding to the target information digital broadcast (D_VOBI) at which time the type information in the cell information is specified as "D_VOB " Finally, the system controller 1902 requests the unit 1906 to finish recording the data stored in the channel buffer 1910, and to record the digital broadcast target information and the cell information. The unit 1911 records the remaining data in the channel buffer 1910, the digital broadcast target information (D_VOBI) and the cell information in the DVD-RAM 100 disc, ending the recording operation. _ The above description is made on the basis that the user requests to start and stop the recording. When a synchronizer recording function usually provided in a VTR system is used, the system controller automatically issues a recording start and stop command instead of the user's request and thereby. The steps of the operation performed by the DVD recorder are essentially the same. (Playback Operation and DVD Recorder) Next, the playback operation on the DVD recorder will be described. First, the user interface 1901"receives a user request." The user interface 1901 transmits the request to the system controller 1902. The system controller 1902 interprets the user's request to the commands to be sent to the appropriate modules. When the user request requests the reproduction of a PGC information, the 1902 system controller analyzes the PGC information and the cell information to see which objective should be reproduced, and a description will be made below for a case in which a PGC The original comprises a film target (M_V0B) and a cell information is reproduced The system controller 1902 first analyzes the type information stored in all the cell information in the PGC information When the type information is "M_V0B" , means that the AV stream has to be reproduced is the system recorded as MPEG program stream. or system 1902 mentions the ID of the cell information to find the corresponding movie target information (M_VOBI) of the table (M_AVFIT). The system controller 1902 then finds the start address and terminating address of the AV data to be recorded according to. the start time information (M_VOB_V_S_PTM) and the termination time information (M_VOB_V_E_PTM) contained in the movie target information and the map T. Next7 the system controller 1902 sends a request to the unit 1902 to read from the DVD -RAM 100, along with the address to start the reading. The unit 1911 then reads the AV data from the address provided by the system controller 1902, and stores the read data in the channel buffer, 1910. Next, the system controller 1902 sends a decoding request to the decoder 1908. of the MPEG program flow. The decoder 1908 then reads the AV data stored in the channel buffer 1910 to decrypt the read data. The decrypted AV data is output through the display device 1907. Upon completion of reading all the data indicated by the system controller 1902, unit 1911 reports to the system controller 1902 that the read operation ended. The system controller 1902 then issues a command to the decoder 1908 to stop the playback operation. The decoder 1908 continues deciphering the data until the channel buffer 1910 is empty. After all the data is decrypted and reproduced, the decoder 1908 informs the system controller 1902 that the reproduction operation ended, leading the reproduction operation to a final end. The above description was made for the case in which an original PGC containing a film target (M_VOB) and a cell information is reproduced. However, the operation of reproducing the AV stream can be performed by the same steps of the operation whether the original PGC contains only one objective of digital diffusion (D__VOB), contain a plurality of film objectives, contain a plurality of digital broadcasting objectives, or contain both film objectives and digital broadcasting objectives. In addition, the same happens with a case in which the original PGC contains a plurality of cells, or in the case of the PGC defined by the user. In addition, the audio target (AOB) and other stream of AV, ie the fixed image target (S_VOBS) are handled essentially in the same procedures by the same modules, with only the difference of the configuration within the decoder 1908. In these cases, "the decoder 1908 can be configured by means of of the PS 1705 decoder, the TS decoder 1706, the audio decoder 1707 or the still image decoder 1708 as shown in Figure 18. The following is an example of a case where the 1908 decoder has no capabilities to reproduce all kinds of AV streams If the decoder 1908 does not have the ability to reproduce the MPEG transport stream, the playback operation by the decoder 1908 is impossible as described above, in which case the digital interface portion 1909 is used to supply external equipment with the data, so that the data can be reproduced "by the external team. When the system controller 1902 finds from the cell information in the PGC information that the user requests the reproduction of a digital broadcasting target (D_VOB) not supported by the system, the 1902 system controller requests the 1909 digital interface output external instead of requesting the decoder 1908 to reproduce. The digital interface 1909 transmits the AV data stored in the channel buffer 1910 in accordance with the communications protocol of the connected digital interface. Other operations performed are the same as those performed when the movie target is played (M VOB).

A decision must be made as to whether the decoder 1908 is or is not compatible with the AV stream requested for reproduction. This decision can be made by the system controller 1902 by itself, or the system controller 19Q2 can ask the decoder 1908. (DVD player) _ __ __ _.

Reference is now made to Figure 20, a DVD player according to the present invention. The DVD player is an interpretation of the player model described above to reproduce the previous optical disc. As shown in the figure, the DVD player comprises a user interface 2001, a system controller 2002, a display device 2003, a decoder 2004, a digital interface 2005, a channel buffer 2006 and a unit 2007. User interface 2001 receives the user's requests and displays some instructions to the user. The 2002 system controller manages and controls the entire DVD player. The 2003 deployment apparatus includes a TV monitor and a speaker system. The decoder 2004 deciphers the MPEG stream. The 2005 digital interface connects to IEEE1394 and so on. The Channel Buffer 2006 temporarily stores the data read from the DVD-RAM 100. The 2007 drive reads the data from the DVD-RAM. The DVD player with the above configuration performs the same playback operations as the DVD recorder described above. It should be noted that the DVD-RAM is taken as an example in the present embodiment. However, the same description that has been made so far applies to the other media. The present invention should not be limited to such media as DVD-RAM and other optical discs. In addition, according to the present embodiment, the AV stream without decoder support is reproduced through the digital interface. However, said AV streams that receive support from the decoder can exit to the external equipment through the digital interface depending on the user's "" request. further, according to the present invention, the audio data and the still image data received the processing of unique data as opposed to the MPEG streams. However, this data can also be recorded in the MPEG system stream format. Although the present invention has been described in connection with the specified embodiments thereof, many other modifications, corrections and applications are visible to those skilled in the art. Therefore, the present invention is not limited by the disclosure provided herein but only within the scope of the appended claims.

Claims (16)

1. - A means of recording information to record targets that include at least one of image data and audio data, the medium comprising: target information that includes identification information and map information of each objective, identification information identifies the objective, the information of the map associates a time of reproduction of the objective with a direction of a component of the objective in means, the component is reproduced in the time of reproduction; and reproduction control information including at least one of cell information in a predetermined order, said cell information contains type information, identification information and reproduction section information, type information indicating a class of the objective, identifying information identifying the objective, reproduction section information specifying a section wherein the objectives specified by the respective cell information are reproduced. Wherein the order of the cell information in the reproduction control information indicates the order in which the objectives specified by the respective cell information are reproduced. The information recording medium according to claim 1, wherein the order of the cell information is determined in accordance with the order in which the objectives specified in the respective cell information are recorded to the medium. The information recording medium according to claim 1, wherein the objective information also includes time in which the objective begins to be reproduced, and time in which the objective finishes being reproduced. The information recording medium according to claim 1, wherein the map information includes a start address of the target information, the size of the target data, and the duration of the component's playing time. Of the objective. 5. The information recording medium according to claim 1, further comprising an administration table for controlling the target rail information by means of a target class, the administration table includes a start address thereof, the number of information of the controlled objective and the size of the controlled objective information. 6. The information recording medium according to claim 1, wherein the target class includes at least one of the movie data, fixed image data, digital broadcast data and audio data. 7. An apparatus for recording data to the information recording medium according to claim 1, comprising: a first unit for receiving an MPEG transport stream for external equipment; a second unit to read the "random_access_indicator" (random access indicator) of the received MPEG transport stream, and generate an access point information based on the random access indicator read. 8. The data recording apparatus according to claim 7, wherein the access point information includes the duration of time and the size of the object component. 9. The data recording apparatus according to claim 7, wherein the second unit generates the time in which the objective begins to reproduce and the time in which the objective finishes reproducing, analyzing the transport flow of MPEG. The data recording apparatus according to claim 7, further comprising: a unit for receiving the signal from an analog broadcast; and an encoder for converting the received signal into a digital signal to encode the digital signal for the MPEG program stream. 11. "An apparatus for recording data to the information recording medium according to claim 1, which comprises a unit for recording type information in the reproduction control information and the type information for indicating a target class. An apparatus for reproducing data to the information recording medium according to claim 1, comprising: a pickup unit for reading objective data recorded on the recording medium; a plurality of decoding units for deciphering the read objective data according to the objective class; a selection unit for selecting _tana from the decoding units for the reproduction operation; and a controller unit for reading the type information included in the reproduction control information, and controlling the selection units for selecting one of the decoding units in accordance with the read type information. The apparatus according to claim 12, further comprising: an external interface for extracting the data from the "target read from the recording medium to the external equipment; the selection unit for selecting one of the decoding units of the plurality; and the external interface, - and the controlling unit for controlling the selection unit so that the external interface is selected when the class of the target specified by the reproduction control information is a class of an objective that can not be deciphered by the decoding units 14. A method for recording data to the information recording medium according to claim 1, comprising "receiving an MPEG transport stream from an external equipment; read the "random access indicator" of the received MPEG transport stream; and "" ~? generate an access point information based on the "random access indicator" read. A method for reproducing data from the information recording medium according to claim 1 / comprising the steps of: _ reading the target data from the recording medium; read the type information of the reproduction control information in the recording medium; and decipher the objective data read according to the read type information. 16. The method according to claim further comprising the step of passing the data of the read objective to the external equipment without deciphering it when the target class specified by the "reproduction" control information is a class of an objective that can not be decipher, ^