WO2006016494A1 - 情報記録媒体、情報記録装置及び方法、情報再生装置及び方法、並びにコンピュータプログラム - Google Patents
情報記録媒体、情報記録装置及び方法、情報再生装置及び方法、並びにコンピュータプログラム Download PDFInfo
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- WO2006016494A1 WO2006016494A1 PCT/JP2005/014039 JP2005014039W WO2006016494A1 WO 2006016494 A1 WO2006016494 A1 WO 2006016494A1 JP 2005014039 W JP2005014039 W JP 2005014039W WO 2006016494 A1 WO2006016494 A1 WO 2006016494A1
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- information
- recording
- recorded
- management information
- free space
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/327—Table of contents
- G11B27/329—Table of contents on a disc [VTOC]
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
Definitions
- Information recording medium information recording apparatus and method, information reproducing apparatus and method, and computer program
- the present invention receives the broadcast program carried by analog broadcast or digital broadcast and records the broadcast program on an information recording medium such as a hard disk or a DVD.
- the present invention relates to a technical field of a medium, an information recording apparatus and method, an information reproducing apparatus and method, and a computer program.
- an information recording / reproducing apparatus such as a DVD recorder that includes a hard disk drive (hereinafter referred to as “HDD” as appropriate), a DVD drive, and the like, and that can be written on various information recording media, For example, it is recorded on an information recording medium such as a hard disk (HD) or DVD.
- HDD hard disk drive
- the first type of video is based on the MPEG2 (Moving Picture Experts Group phase 2) standard, which is a broadcast program carried by a conventional analog terrestrial wave, and is a high-efficiency encoding technology for the broadcast program.
- MPEG2 Motion Picture Experts Group phase 2
- PS format the converted program stream format
- the second type of video is digitally transmitted via IEEE (Institute of Electrical and Electronic Engineers) 1394, the next-generation high-speed SCSI (Small Computer System Interface) standard represented by i.
- the transport stream format (hereinafter referred to as the “TS format”, which can be directly recorded on an information recording medium such as HD, which constitutes a broadcast program to be transported by television broadcasting (hereinafter referred to as “digital broadcasting” where appropriate). ”).
- the two types of moving images include position information such as addresses where the two types of moving images are recorded, respectively.
- the arrangement management information in which the position information is gathered is also made separate. This is because it is easy to control various operations by the information recording / reproducing apparatus, and it is easy to record, play and edit these moving images.
- the information recording / playback device controls the recording operation of these videos based on two pieces of arrangement management information corresponding to the two types of videos! When recorded on an information recording medium, one of the two types of video may overwrite or destroy the other video, making playback impossible.
- Patent Document 1 discloses a technique for dynamically setting the addresses of partitions that divide a plurality of recording areas respectively corresponding to these moving images by the control means of the information recording / reproducing apparatus. Yes.
- Patent Document 1 Japanese Patent Laid-Open No. 8-63376
- Patent Document 1 Even in Patent Document 1 in which partitions are dynamically set, if the size of a plurality of divided recording areas is changed, if the partition force vacant areas are continuous, the condition is necessary. There are technical problems. Thus, there is a technical problem that the recording area of an information recording medium such as HD cannot be used efficiently.
- the present invention has been made in view of, for example, the above-described problems. For example, when recording information of a plurality of formats on an information recording medium, the recording area of the information recording medium is more efficiently used.
- an information recording apparatus and method, an information reproducing apparatus and method, and a computer program that causes a computer to function as such an information recording apparatus and information reproducing apparatus Is an issue.
- the information recording medium of the present invention has recorded a recording area for recording the recording information and first recording information of the first format (PS format) that is at least a part of the recording information.
- the first management information recording area for recording the first management information for managing the arrangement information (address information) of the area, and the second format (TS format) which is at least another part of the recorded information (2)
- a free space management information recording area for recording free space management information for managing information (address information).
- the free space management information for managing the location information such as all the address information of the free space where the recorded information is not recorded can be recorded in the free space management information recording region. It is. Further, for example, the first management information for managing the arrangement information of the area where the first recording information of the first format which is the PS format has been recorded can be recorded in the first management information recording area. Further, for example, second management information for managing the arrangement information of the area in which the second recording information of the second format that is the TS format has been recorded can be recorded in the second management information recording area. It should be noted that there is no partition, so-called partition, for statically or dynamically dividing the recording area for recording these plural types of recording information.
- an information recording medium such as an HD or a DVD has a plurality of forms.
- the recording area of the information recording medium can be used more efficiently.
- the recording of the first recording information and the second recording information has been described.
- it includes content broadcasted via the Internet in conformity with the MPEG2 and MPEG4 standards. It may be configured to record recording information in three or more types.
- the first and second management information and the free area management information according to the present invention are arranged in an area in which the first and second recording information has been recorded across a plurality of information recording media. It is possible to manage information and arrangement information of free areas.
- the area in which the first recording information has been recorded and the area in which the second recording information has been recorded are mixed in the recording area.
- the recording area of the information recording medium can be used more efficiently.
- At least one of the first management information, the second management information, and the free space management information can be specified by pointer information.
- a static management information recording area for recording static management information is further provided.
- the static management information that collectively manages at least one of the first management information, the second management information, and the free space management information. It is possible to suppress as much as possible. More specifically, various management information for managing various recording areas such as the first management information, the second management information, and the free area management information is assigned to the entire recording area of an information recording medium such as an HD. The amount of data will increase to a level that cannot be ignored. Therefore, by considering various types of management information as part of the recorded information such as contents, etc., the static management information has a data structure having only pointer information to the management information, so that the amount of static management information data can be reduced. It is possible to suppress the increase as much as possible. As a result, the static management information recording area in which the static management information is recorded can be used more efficiently. As a result, the static management information recording area itself The amount of data can be further reduced.
- a first information recording apparatus of the present invention is an information recording apparatus for recording the recording information on an information recording medium (HD, DVD) according to claim 1, wherein the recording information Recording means for recording the first recording information based on the free space management information, first control means for controlling the recording means to record the first recording information, and the second control based on the free space management information. Second control means for controlling the recording means so as to record recording information, and free area updating means for updating the free area management information when the recording information is recorded or recorded.
- the first record information (PS) is recorded
- the first update means for updating the first management information and the second record information (TS) are recorded.
- Second update means for updating the second management information.
- free area update means for updating free area management information for managing all arrangement information of empty areas in which the recorded information is in an unrecorded state; ii) For example, first update means for updating the first management information for managing the arrangement information (address information) of the area in which the first recording information of the first format that is PS format has been recorded, and (iii) for example The second updating means for updating the second management information for managing the arrangement information (address information) of the area in which the second recording information of the second format which is the TS format has been recorded is controlled separately. Furthermore, the free space management information is shared between the first control means and the second control means. In addition, power! In other words, a partition for statically or dynamically dividing a recording area for recording a plurality of types of recording information, that is, a so-called partition, is not set.
- the first recording information in the PS format is recorded by the recording means based on the free space management information.
- “based on free space management information” means to determine whether or not recording is possible by comparing the data amount of recording information to be recorded with the data amount of free space. Also good.
- the first management information is updated by the first update means.
- second recording information in the TS format is recorded by the recording means on the basis of the free space management information.
- the second management information is updated by the second updating means.
- free area update means for updating free area management information for managing all the arrangement information of free areas in which the recording information is unrecorded, and (ii) for example in PS format
- a first updating means for updating the first management information for managing the arrangement information (address information) of the area in which the first recording information of one format is recorded, and (iii) the second format of the TS format, for example.
- the partition so-called partition, It becomes necessary to first set the size of the recording area corresponding to both pieces of recording information.
- Patent Document 1 which dynamically sets partitions, even when changing the size of a plurality of divided recording areas, it is necessary to have a condition that the free space is continuous for the partition power. there were.
- the recording area power in which the movie in one format for example, TS format
- the movie in the other format for example, PS format
- the free area management information for managing the arrangement information of all the free areas related to the distributed unevenly distributed free areas is the i-th control means and Shared in the second control means.
- the first record information in the PS format or the first record in the TS format is used for all the free regions regardless of whether the free regions are dispersedly distributed or exist continuously.
- Recording information in any format such as recording information can be recorded freely without specifying a specific free space. Is possible.
- the recording area of the information recording medium is used more efficiently. Can be used.
- the free area update unit includes the first update unit and the second update unit when the free area management information is updated. It notifies the arrangement information of the area where the recorded information has been recorded.
- the free space management information can be shared more accurately and quickly in the first update means and the second update means in addition to the first control means and the second control means. It becomes.
- Another aspect of the first information recording apparatus of the present invention is a virtual setting in which a user sets a ratio between a data amount of the first recording information (PS) and a data amount of the second recording information (TS).
- a partition setting means is further provided.
- the virtual partition based on the distribution of the data amount set by the user is set. It is possible to prevent the recording information of one format from consuming all of the free space. More specifically, even when a large amount of video content in TS format is recorded, a free space for recording PS format content can be secured. Therefore, it is possible to avoid the fact that recording cannot be performed due to scheduled recording of PS content.
- the first control means uses the data amount of the first recording information set by the virtual partition setting means, based on the free area management information! /, And the data amount of the recording area in the recorded state. It may be configured to determine whether or not recording is possible by comparing the remaining data amount after subtracting and the data amount to be recorded. The same applies to the second control means.
- the recording means includes a first recording means for recording the first recording information and a second recording means for recording the second recording information.
- the control means controls the first recording means and the second recording means to record exclusively on the unrecorded area indicated by the empty area management information. .
- the free space management information is managed based on the exclusive control (semaphore)! Therefore, even when the first and second recording means are simultaneously recording on the free space at the same position, it is possible to eliminate the inconsistency of the free space management information. At the same time, it is possible to maintain the integrity and uniformity of the free space management information.
- the free space management information has a data structure that can be updated by the first update means and the second update means, and the first update means And when the recording of the first recording information and the recording of the second recording information are performed in succession (in other words, when the recording is not performed at the same time), The free space management information is updated respectively.
- the second information recording apparatus of the present invention is an information recording apparatus for recording the recording information on the information recording medium (HD, DVD) described above.
- Deletion means for deleting information first control means for controlling the deletion means to delete the first record information based on the first management information, and based on the second management information, Second control means for controlling the deleting means so as to delete the second recorded information; and a free area updating means for updating the free area management information when the recording information is deleted or deleted.
- the first record information (PS) is deleted
- the first update means for updating the first management information and when the second record information (TS) is deleted.
- the configuration is substantially the same as that of the first information recording apparatus.
- the first record information in the PS format for example, is deleted by the deletion means based on the first management information.
- the first management information is updated by the first update means.
- the free space management information is updated under the control of the free space update means.
- the second recording information in the TS format for example, is deleted by the deletion means based on the second management information.
- the second management information is updated by the second update means.
- the free space management information is updated under the control of the free space update means.
- the first record information in the PS format or the first record in the TS format is used for all the free regions regardless of whether the free regions are distributed and unevenly distributed.
- Recording information in any format, such as recording information, can be freely deleted without specifying a specific free space.
- the recording area of the information recording medium is more efficiently used. Can be used.
- the first information recording method of the present invention is an information recording method in an information recording apparatus comprising a recording means for recording the recording information on the information recording medium (HD, DVD) described above in order to solve the above-mentioned problem.
- the first record information (PS) is recorded, the first update process for updating the first management information and when the second record information (TS) is recorded, the first record information (PS) is recorded. 2
- the first information recording method of the present invention can also adopt various aspects.
- the second information recording method of the present invention is an information recording apparatus provided with a deletion means for deleting the recording information from the information recording medium (HD, DVD) described above.
- a recording method wherein the first recording information is based on the first management information.
- a first control step for controlling the deletion means so as to delete a second control step for controlling the deletion means to delete the second recording information based on the second management information, and
- a free area update process for updating the free area management information and the first record information (PS) are deleted when the first record information (PS) is deleted.
- the second information recording method of the present invention can also adopt various aspects.
- an information reproducing apparatus of the present invention is an information reproducing apparatus provided with reproducing means for reproducing the recorded information recorded on the information recording medium described above. Selecting means for selecting one of the first recording information and the second recording information; and (i) when the first recording information is selected, based on the first management information, ii) a reproduction control unit that controls the reproduction unit to reproduce based on the second management information when the second recording information is selected.
- the recording information desired by the user can be selected and reproduced by the selecting means under the control of the reproduction controlling means.
- the information reproducing apparatus of the present invention it is possible to receive substantially the same benefits as the benefits of the information recording device according to the present embodiment.
- the information reproducing apparatus of the present invention can also adopt various aspects.
- the information reproducing method of the present invention is an information reproducing apparatus provided with reproducing means for reproducing the recorded information recorded on the information recording medium described above. Selecting means for selecting one of the first recording information and the second recording information; and (i) when the first recording information is selected, the first tube And (ii) reproduction control means for controlling the reproduction means to reproduce based on the second management information when the second recording information is selected.
- the information reproducing method of the present invention can also adopt various aspects.
- a first computer program of the present invention is a computer for recording control that controls a computer provided in the above-described first information recording apparatus of the present invention (including various aspects thereof).
- the second computer program of the present invention provides a recording control for controlling a computer provided in the above-described second information recording device of the present invention (including various aspects thereof).
- the third computer program of the present invention is for reproduction control for controlling a computer provided in the above-described information reproducing apparatus of the present invention (including various aspects thereof).
- the computer program causes the computer to function as at least a part of the reproduction means, the selection means, and the reproduction control means.
- the computer program is stored in a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk that stores the computer program. If the computer program is read and executed, or if the computer program is downloaded to the computer via communication means and then executed, the above-described information recording apparatus or information reproducing apparatus of the present invention is relatively simple. Can be realized.
- the first computer program product in the computer-readable medium is executable by a computer provided in the above-described first information recording apparatus (including various aspects thereof).
- Program instructions are clearly embodied, and the computer is caused to function as at least a part of the recording means, the control means, the free space update means, the first update means, and the second update means.
- the second computer program product in the computer-readable medium is executable by a computer provided in the above-described second information recording device (including various aspects thereof).
- a program instruction is clearly embodied, and the computer is caused to function as at least a part of the deletion unit, the control unit, the free space update unit, the first update unit, and the second update unit.
- a third computer program product in a computer-readable medium is a program command executable by a computer provided in the above-described information reproducing apparatus (including various aspects thereof).
- the computer is caused to function as at least a part of the reproduction means, the selection means, and the reproduction control means.
- the computer program is recorded from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk that stores the computer program product. If the product is read into a computer or the computer program product, which is a transmission wave, for example, is downloaded to the computer via communication means, the above-described information recording apparatus or information reproducing apparatus of the present invention is relatively It can be easily implemented. More specifically, the computer program product may also be configured with a computer readable code (or computer readable command) that functions as the information recording apparatus or information reproducing apparatus of the present invention described above. ,.
- the information recording apparatus or method of the present invention includes a recording unit or a deletion unit, a first control unit, a second control unit, a free space update unit, a first update unit, Second change
- the new means includes a recording process, a first control process, a second control process, a free space update process, a first update process, and a second update process.
- the information reproducing apparatus or method of the present invention includes a reproducing unit, a selecting unit, and a reproduction control unit, or a reproduction step, a selection step, and a reproduction control step. Therefore, for example, when recording information of a plurality of formats on an information recording medium such as HD and DVD, the recording area of the information recording medium can be used more efficiently.
- FIG. 1 A conceptual diagram (Fig. 1 (a)) schematically showing the configuration of a program stream (PS) based on the MPEG2 standard according to the present invention, and the MPEG2 standard according to the present invention. It is a conceptual diagram (Fig. 1 (b)) that schematically shows the structure of a transport stream (TS) based on it.
- PS program stream
- TS transport stream
- FIG. 2 is a conceptual diagram schematically showing a data structure to be constructed in a hard disk (HD), DVD or the like which is a specific example of the information recording medium of the present invention.
- HD hard disk
- DVD digital versatile disc
- FIG. 3 is a data structure diagram schematically showing a data structure of free space management information which is a specific example of “free space management information” according to the present invention.
- FIG. 4 is a schematic diagram of the data structure (Fig. 4 (a) and Fig. 4 (b)).
- FIG. 5 is a block diagram conceptually showing the basic structure of an information recording / reproducing apparatus in an example of the information recording apparatus of the present invention.
- FIG. 6 is a flowchart schematically showing an operation flow of the information recording / reproducing apparatus in the embodiment of the information recording apparatus of the present invention.
- FIG. 7 is a block diagram schematically showing a detailed configuration of an information recording / reproducing apparatus according to an embodiment of the information recording apparatus of the present invention.
- FIG. 8 is a conceptual diagram schematically showing a data structure to be constructed on a hard disk (HD) or DVD according to a comparative example.
- a receiver for receiving terrestrial digital broadcasting is provided, and the information is recorded on an information recording medium such as a hard disk drive (hereinafter referred to as “HDD” as appropriate).
- DVD recorder with HDD A first-class information recording / reproducing apparatus will be described.
- FIG. 1 is a conceptual diagram (FIG. 1 (a)) schematically showing the configuration of a program stream (PS) based on the MPEG2 standard according to the present invention and the MPEG2 standard according to the present invention.
- Fig. 1 is a conceptual diagram (Fig. 1 (b)) that schematically shows the structure of a transport stream (TS).
- one program stream includes only one video stream for video data as main video information along the time axis t, and further, audio for audio data as audio information. It contains up to 8 streams and up to 32 sub-picture streams for sub-picture data as sub-picture information. That is, the video data multiplexed at an arbitrary time tx relates to only one video stream, and for example, a plurality of videos corresponding to a plurality of television programs (so-called broadcast programs) or a plurality of movies. Cannot be included in the program stream at the same time.
- broadcast programs television programs
- the video data multiplexed at an arbitrary time tx relates to only one video stream, and for example, a plurality of videos corresponding to a plurality of television programs (so-called broadcast programs) or a plurality of movies. Cannot be included in the program stream at the same time.
- broadcast programs television programs
- a plurality of movies Cannot be included in the program stream at the same time.
- at least one video stream is required
- one transport stream includes a plurality of video streams as elementary streams (ES) for video data as main video information, and audio data as audio information.
- a plurality of audio streams are included as elementary streams (ES) for use, and a plurality of sub-picture streams are included as elementary streams (ES) for sub-picture data as sub-picture information.
- the video data multiplexed at an arbitrary time tx relates to a plurality of video streams.
- a plurality of video streams corresponding to a plurality of TV programs or a plurality of movies are displayed.
- it can be included in the transport stream.
- the transport stream format in which a plurality of video streams exist, a plurality of television programs and the like can be multiplexed and transmitted or recorded.
- the sub-picture stream is not transmitted.
- the video stream, the audio stream, and the sub-picture stream are arranged in the order of the upper force in this order. It does not correspond to the order when multiplexed in units.
- the transport stream conceptually, for example, one program corresponds to a group of one video stream, two audio streams, and two sub-picture streams.
- An information recording medium such as an HD or a DVD according to this embodiment to be described later is a transport stream including a plurality of elementary streams (ES) in this manner within the limitation of the recording rate.
- ES elementary streams
- TS can be recorded multiple times, that is, multiple TV programs can be recorded simultaneously.
- FIG. 2 shows a hard disk (HD), DVD, etc., which is a specific example of the information recording medium of the present invention.
- FIG. 3 is a conceptual diagram schematically showing a data structure to be constructed.
- FIG. 3 is a data structure diagram schematically showing the data structure of free space management information which is a specific example of “free space management information” according to the present invention.
- FIG. 4 is a schematic diagram of the data structure of PS management information, which is a specific example of “first management information” according to the present invention, and TS management information, which is a specific example of “second management information” according to the present invention.
- Fig. 4 is a schematic diagram of the data structure (Fig. 4 (a) and Fig. 4 (b)).
- a hard disk (HD), DVD, or the like which is a specific example of the information recording medium of the present invention, includes (i) a recording area 100 such as a data area, and (ii) the present invention.
- a PS management information area 120 which is a specific example of the “first management information recording area” according to the present invention
- a TS management information area 130 which is a specific example of the “second management information recording area” according to the present invention.
- the content in the program stream format which is a specific example of the "first recording information in the first format” according to the present invention
- the content of transport stream format (TS format) which is a specific example of “second recording information”
- free space management information 110a can be recorded.
- This free area management information 110a manages the arrangement information (address information) of free areas that are in an unrecorded state in the recording area 100.
- the free space management information 110a includes, for example, an ECC (Err or Correcting Code) block (hereinafter referred to as “block”) 110b in a recording area of an information recording medium such as HD or DVD. It consists of a recording unit and flag information 110c. More specifically, the start position and the end position of the block 110b can be designated by the sector number.
- ECC Err or Correcting Code
- the flag “1” is set in the field of the flag information 110c in the “recorded” block, and “0” is set in the “unrecorded” block. Is flagged. More specifically, “20000h” (“h” indicates display in hexadecimal) to “9FFFFh” is a recorded recording area, and “A0000h” to “EFFFFh” are unrecorded states. Recording area It is an area.
- PS management information 120a which is a specific example of "first management information" according to the present invention, can be recorded.
- the PS management information 120a manages arrangement information (for example, information related to a pointer to the PS) of an area where PS format content has already been recorded in the recording area 100.
- the PS management information 120a includes the number of recorded titles 120b, the number of tables for each title information 120c, the number of tables for each stream 120d, Toll information 120e and stream information 120f.
- the number of recorded titles 120b is normally set to "1", but it is preferable to set it to "2" with redundancy in consideration of data protection.
- the recorded title may consist of multiple titles.
- the number 120d of tables for each stream is set to the maximum number of streams PS-Sn that can record a PS format stream.
- the number of title information 120e is set to the maximum number of titles PS-Tn in which titles of PS format content can be recorded.
- the title information 120e further includes a title name 120el, a total time 120e2, pointers to each stream and range information 120e3, resume position information 120e4, the number of entry points 120e5, and entry point information 120e6. Yes. More specifically, it is desirable to set the number of title names 120el to “2” with redundancy in consideration of the protection of force data set to “1”.
- the number of total time 120e2 is set to “1”, but it is desirable to set it to “2” with redundancy in consideration of data protection.
- the maximum number PS-Pn that can specify the reproducible range is set.
- the number of resume position information 120e4 is set to “1”, but it is preferable to set it to “2” with redundancy in consideration of data protection.
- the number of entry points 120e5 is preferably set to “2” with redundancy in consideration of the protection of force data set to “1”.
- the maximum number of entry points PS—En is set.
- the number of stream information 120f is set to the maximum number of streams PS-Sn that can record a PS format content stream.
- the stream information 120f further includes a recording unit number 12 Ofl and a pointer 120f2 to each unit. More specifically, the number of recording units 120fl is set to “1”, but it is preferable to set it to “2” with redundancy in consideration of data protection.
- the pointer 120f2 to each unit is set to the maximum number of units PS—Un.
- TS management information 130a which is a specific example of “second management information” according to the present invention, can be recorded.
- the TS management information 130a manages arrangement information (for example, information on a pointer to the TS) of an area where TS format content has been recorded in the recording area 100.
- the data structure of the TS management information 130a is almost the same as the data structure of the PS management information 120a.
- the TS management information 130a includes the number of recorded titles 130b, the number of tables 130c for each title information, the number of tables 130d for each stream, the type Toll information 130e and stream information 130f.
- the number of recorded titles 130b is normally set to “1”, but it is desirable to set it to “2” with redundancy in consideration of data protection.
- the recorded title may consist of multiple titles.
- the number 130c of tables for each title information is set to the maximum number of titles TS-Tn in which the titles of TS format contents can be recorded.
- the maximum number of streams TS-Sn that can record a TS format content stream is set.
- the number of title information 130e is set to the maximum number of titles TS-Tn in which the titles of TS format contents can be recorded.
- the title information 130e further includes a title name 130el, a total time 130e2, a pointer 130e3 to each stream, and resume position information 130e4. More specifically, the number of title names 130el is set to “1”, but it is preferable to set it to “2” with redundancy in consideration of data protection.
- the total time 1 30e2 is set to “1”, but it is desirable to set it to “2” with redundancy in consideration of data protection.
- the number of pointers 130e3 to each stream is set to “1”. However, in consideration of data protection, it is desirable to set it to “2” with redundancy.
- the number of the resume position information 130e4 is set to “1”, but it is desirable to set it to “2” with redundancy in consideration of data protection.
- the number of entry points 130e5 is set to “1”, but it is desirable to set it to “2” with redundancy in consideration of data protection.
- the maximum number of entry points TS-En is set.
- the number of stream information 130f is set to the maximum number of streams TS-Sn that can record a TS format content stream.
- the stream information 130f further includes a recording unit number 13 Ofl and a pointer 130f2 to each unit. More specifically, the number of recording units l 30 fl is set to “1”, but it is desirable to set it to “2” with redundancy in consideration of data protection.
- the pointer 130f2 to each unit is set to the maximum number of units TS—Un.
- the free space management information is shared when recording information of a plurality of formats is recorded by the information recording apparatus described later.
- the PS management information 120 and the TS management information 130 are updated by the information recording device.
- the recording area of the information recording medium can be used more efficiently.
- an information recording / reproducing apparatus such as a DVD recorder with an HDD, which can not only record broadcast programs carried by TS and PS but also reproduce these broadcast programs, is used.
- a specific example of the information recording apparatus according to the present invention will be described.
- FIG. 5 is a block diagram conceptually showing the basic structure of the information recording / reproducing apparatus in the example of the information recording apparatus of the present invention. As shown in FIG.
- the information recording / reproducing apparatus 1 includes (i) components centering on free space management means 210 constituting an example of “free space update means” of the present invention, (ii) Components centering on PS arrangement management means 220 constituting an example of “first update means” of the present invention, (ii i) TS arrangement management means constituting an example of “second update means” of the present invention 230, and (iv) the “virtual partition setting means” 250 of the present invention, and (V) the HDD 200 constituting an example of the “information recording medium” of the present invention.
- the components centering on the free space management means 210 are further provided with a free space read / write means 211 and a work RAM 212.
- the work RAM 212 is an auxiliary or secondary storage means for high-speed processing.
- the free space management information 110a is acquired from the free space management information area 110 in the HDD 200 when the information recording / reproducing apparatus is turned on.
- the empty area management information 110a may be created by searching for an unrecorded empty area by an initial operation.
- the free area management information 110a is newly updated by the free area read / write means 211 under the control of the free area management means 210.
- the latest free space management information 110a is recorded in the free space management information area 110 in the HDD 200.
- the components centering on the PS arrangement management means 220 are further viewers of the broadcast program, and the PS format content can be obtained by the user who performs the recording (hereinafter referred to as “user” as appropriate).
- PS instruction means 221 for recording, playback or editing instructions, PS input / output means 222 for inputting / outputting contents such as PS format video, PS recorded area calculation means 223, PS recordable remaining An area calculation unit 224 and a PS read / write unit 225 are provided.
- the PS arrangement management means 220 such as a CPU may include a storage means such as a memory, and the PS management information 120a may be stored therein.
- the components centering on the TS arrangement management means 230 further include TS instruction means 231 for instructing the user to record, play back, or edit the TS format content. It includes TS input / output means 232 for inputting / outputting contents such as moving pictures, TS recorded area calculating means 233, TS recordable remaining area calculating means 234, and TS read / write means 235.
- the TS placement management means 230 such as a CPU
- a storage means such as a memory is provided, and the TS management information 130a is configured to be stored therein.
- the virtual partition setting means 250 can record information on the maximum number of sectors in the PS recordable area determined by the initial setting by the user, for example, for PS recording. Output to remaining area calculation means 224.
- FIG. 6 is a flowchart conceptually showing a flow of operations of the information recording / reproducing apparatus in the embodiment of the information recording apparatus of the present invention. Since the PS recording operation and the TS recording operation are substantially the same, FIG. 6 illustrates the PS recording operation, and the TS recording operation (that is, in the case of “No” in step S101). The description about is omitted.
- step S101 it is determined whether the received broadcast program stream is PS or not (step S101).
- the user is instructed to stop recording under the control of the PS instruction means 221. Is determined (step S102).
- step S102 when the user gives an instruction not to stop the recording (step S102: No), the PS force information recording / reproducing apparatus 1 is further input under the control of the PS input / output unit 222. It is determined whether or not the force is applied (step S103).
- step S104 when input to the PS power information recording / reproducing apparatus 1 (step S1 03: Yes), under the control of the PS arrangement management means 220, the data amount of the received broadcast program of PS to be recorded on the HDD The number of sectors “n” is acquired (step S104).
- step S105 whether or not the number of sectors to be recorded “n” is less than or equal to the number of sectors “z” in the remaining area that can be recorded for PS under the control of the PS arrangement management means 250. Judgment is made (step S105). More specifically, as shown in FIG. 5, the PS arrangement management means 220 calculates the number of sectors “s” of the areas already recorded for PS in the PS recorded area calculation means 223. Send instructions to do. The PS recorded area calculation means 223 calculates the number of sectors “s” of areas already recorded for PS, and outputs it to the PS recordable remaining area calculation means 224. PS recordable remaining area calculation means 224 is input from virtual partition setting means 250.
- the number of sectors in the remaining recordable area for PS is obtained by subtracting the sector number “s” from the maximum number of sectors “PS” that can be recorded for PS determined by the user's initial settings. "Is calculated and output to the PS placement management means 220. In this way, the PS placement management means 220 has the number of sectors to be recorded” n "in the remaining area that can be recorded for PS. It is determined whether or not the force is less than the number of sectors “z”.
- step S105 if the number of sectors to be recorded is "n" and the number of sectors in the remaining area that can be recorded for PS is less than "z" (step S105: Yes), the free area management Under the control of the processing means 210, it is determined whether or not there is an unrecorded recording area in which the data amount of the sector number “n” can be continuously recorded in the HDD (step S106).
- step S106 when there is an unrecorded recording area in which the data amount of the number of sectors “n” can be continuously recorded (step S106: Yes), the free area management information is controlled under the control of the free area management unit 210.
- the attribute information corresponding to the address where the number of sectors “n” is recorded (for example, flag information such as a space bitmap) is updated to information indicating that it has been recorded (step S107). .
- step S108 the PS corresponding to the data amount of the number of sectors “n” is recorded in the recording area in the unrecorded state by the PS read / write means 225 (step S108).
- the PS management information 120a is updated under the control of the PS arrangement management means 220 (step S109). More specifically, information regarding the address (arrangement) of the area where the PS is newly recorded is newly added to the PS management information 120a.
- step S102 when the user instructs to stop recording (step S102: Yes), the number of sectors to be recorded “n” is determined as a result of the determination in step S105.
- the remaining number of sectors that can be recorded for PS is less than or equal to the number of sectors “z”, that is, when it is larger (step S105: No)
- the amount of data of the number of sectors “n” can be recorded continuously. If no unrecorded recording area exists (step S106: No), the series of recording operations is terminated.
- FIG. 7 shows an information recording / reproducing apparatus according to an embodiment of the information recording apparatus of the present invention. It is a block diagram which shows the detailed structure of this.
- the information recording / reproducing apparatus 1 includes a TV receiver la, video input 2, audio output 3, input switching 4, ⁇ / ⁇ (Analog to digital) converter 5, A / D Converter 6, TV signal decoder 7, input selector 8, video encoder 9, audio encoder 10, multiplexer 1 1, input selector 12, drive 1 input selector 13, drive interface 14, HDD drive 15, HDD 16, drive 2 input selector 17 , Drive interface 18, DVD drive 19, DVD 20, playback switch 21, output switch 22, demultiplexer 23, image decoder 24, audio decoder 25, output switch 26, thumbnail OSD27, TV signal encoder 28, DZA converter 29, video Output 30, D / A (Digital to Analog) converter 31, Audio output 32, System CPU 33, Operation unit 34, Memory unit 35, Remote control sensor 36, Remote control 37, Digital receiver 38, IEEE1394 Coder 39, TS input processor 40, TS Autoputtopu port processor 41, IEEE1394 encoder 42, and is configured to include an IEEE1394 output 43.
- a / D Converter 6 TV signal decoder 7, input selector 8, video encoder
- the digital receiver 38 receives, for example, terrestrial digital broadcasting.
- the IEEE1394 decoder 39 converts the IEEE 1394 format transport stream input via the digital receiver 38 into a normal transport stream, and outputs it to the TS input processor 40.
- TS input processor 40 converts the input normal transport stream into transport stream data for HDD recording (hereinafter referred to as “: TS data for HDD recording” as appropriate) and outputs it to input switch 12. .
- a drive interface 14 compliant with standards such as ATAPI is connected to the HDD drive 15, and a drive 1 input switch 13 for switching the output from the input switch 12 is connected to the drive interface 14. .
- This drive 1 input selector 13 is connected to system C
- the input source is switched under the control of PU33.
- the HDD drive 15 records the stream (TS or PS) input via the input switch 12 on the HDD 16.
- the TV receiver la receives an RF signal such as VHF or BS, converts the received signal wave in tune to the selected reception band to an IF signal, and also demodulates and inputs the TV video signal and audio signal. Output to switch 4.
- an RF signal such as VHF or BS
- converts the received signal wave in tune to the selected reception band to an IF signal and also demodulates and inputs the TV video signal and audio signal. Output to switch 4.
- the input switching 4 selectively switches the signal output from the TV receiver la and the video input 2 and audio input 3 power signals to the AZD (Analog to digital) converter 5.
- the audio signal is output to the AZD converter 6.
- the AZD converter 5 converts the analog signal for TV selected by the input switch 4 into a digital signal and outputs the digital signal to the TV signal decoder 7.
- the TV signal decoder 7 decodes the input TV digital signal, converts it into a normal video signal such as the NTSC system, and outputs it to the input switch 8.
- the AZD converter 6 converts the analog audio signal selected by the input switch 4 into a digital audio signal and outputs it to the input switch 8.
- the input switch 8 includes a video signal and an audio signal output from the TV signal decoder 7 and the AZD converter 6 and, for example, when dubbing to a DVD from an HDD cover, and DV
- the decoded video signal and audio signal output from HDD drive 15 or DVD drive 19 are input.
- This input switching 8 selects either an input video signal or an audio signal based on the control of the system CPU 33 described later, the selected video signal to the video encoder 9, and the selected audio signal. Output to audio encoder 10.
- the video encoder 9 converts the video signal selected by the input switch 8 into MPEG format video data, and outputs it to the multiplexer 11.
- the audio encoder 10 converts the audio signal selected by the input switch 8 into AC-3 format audio data, and outputs the audio data to the multiplexer 11.
- the multiplexer 11 is programmed based on the input video data and audio data. A ram stream is generated and output to the input selector 12.
- the input switch 12 receives the program stream output from the multiplexer 11 and the transport stream output from the TS input processor 40 described above. This input switch 12 selects an input stream based on the control of the system CPU 33 and outputs it to the drive 1 input switch 13 and the drive 2 input switch 17.
- the free space management information 110a is read from the HDD drive 15 in accordance with an instruction from the system CPU 33 and held in the memory unit 35. If the stream to be recorded on the HDD 16 at the input switching 12 is a program stream, the CPU 33 reads the PS management information 120a for the program stream from the HDD drive 15 and combines it with the free space management information 110a held in the memory unit 35. This controls the recording of the program stream to the HDD drive 15 and updates the free space management information 110a.
- the CPU 33 reads the TS management information 130a for the transport stream from the HDD drive 15 and holds the free space held in the memory unit 35. Together with the management information 110a, it controls the recording of the transport stream to the HDD drive 15 and updates the free space management information 110a.
- the system CPU 33 identifies whether the designated title is the program stream power transport stream, and if necessary, from the HDD drive 15, The PS management information 120a and the TS management information 130a are read, the recording areas of the titles respectively specified from the PS management information 120a and the TS management information 130a are set as free areas, and the free area management information 110a is updated. Finally, when the information recording / reproducing apparatus 1 is terminated, the system CPU 33 sends an instruction to write the stored free space management information 110a from the memory unit 35 to the HDD drive 15.
- the TS output processor 41 converts the input HDD recording transport stream data into a normal transport stream and outputs it to the IEEE 1394 encoder 42.
- the IEEE1394 encoder 42 The sport stream is converted to an IEEE1394 format transport stream and output to the outside via the IEE E 1394 output 43.
- a list of recorded contents of each title, so-called thumbnails is displayed on the thumbnail OSD 27, or the memory unit 35 is transcoded by the system CPU 33. It can be converted into BML (Broadcast Markup Language) data for title list display of the port stream, and output from the TS output processor 41 through the IEEE1394 encoder 42 and output from the IEEE1394 output 43.
- BML Broadcast Markup Language
- Drive interface 18 conforming to standards such as ATAPI is connected to DVD drive 19, and drive interface 18 is connected to drive interface 18 to switch output from HDD drive 15 or output from input switch 12.
- This drive 2 input switch 17 switches between input and output under the control of the system CPU 33 in the same manner as the drive 1 input switch 13.
- the DVD drive 19 reads out a pre-recorded stream and outputs it to the playback switch 21 via the drive interface 18 and the stream input via the input switch 12 in the same manner as the HDD drive 15. It starts to record on DVD20.
- the playback switch 21 controls either the stream output from the HDD drive 15 via the drive interface 14 or the stream output from the DVD drive 19 via the drive interface 17 to the system CPU 33. Select based on, and output to output selector 22.
- the output switch 22 selectively switches the stream input from the playback switch 21 based on the control of the system CPU 33, the program stream to the demultiplexer 23, and the transport stream to the TS output processor 41 to be described later. Output.
- the demultiplexer 23 separates the video data having the MPEG format and the audio data having the AXC-3 format from the program stream selected by the output switch 22, and the separated video data and audio data are respectively converted into image decoders. Output to 24 or audio decoder 25.
- the image decoder 24 decodes the input MPEG video data and outputs a video signal.
- the decoded digital signal is output to the output switch 26.
- the audio decoder 25 decodes the input AC-3 format audio data and converts it into an audio signal, and outputs the decoded digital audio signal to the output switch 26.
- the output switch 26 includes the digital video signal output from the TV signal decoder 7 and the digital audio signal output from the AZD converter 6, the digital image signal decoded by the image decoder 24 and the audio decoder 25, and the digital audio signal.
- This output switch 26 switches the input video signal and audio signal based on the control of the system CPU 33, and the video signal is transferred to the thumbnail OSD27 and the audio signal is input.
- the thumbnail OSD 27 superimposes necessary character information and the like on the input video signal and outputs it to the TV signal encoder 28.
- the TV signal encoder 28 converts the input video signal into a TV video format for display on an external monitor and the like, and outputs it to the DZA converter 29.
- the DZ A converter 29 converts the input digital video signal for TV into an analog signal, and outputs it to the outside via the video output 30.
- the DZA converter 31 converts the input digital audio signal into an analog signal and outputs the analog signal to the outside via the audio output 32.
- the system CPU 33 includes various input / output ports such as a key input port and a display unit output port, and comprehensively provides general functions for HDD 16 playback and recording or DVD 20 playback and recording processing. Control.
- the system CPU 33 reads the control program stored in the memory unit 35 during playback and recording of the HDD 16 or playback and recording of the DVD 20, executes each process, and stores the data being processed in the memory unit 35. It is designed to hold temporarily.
- the operation unit 34 is composed of a number of keys such as various confirmation buttons, numeric keys, up / down / left / right cursor keys, and outputs a predetermined signal to the system CPU 33 according to the key operation or output from the remote control light receiving unit 36. To do.
- the remote control light receiving unit 36 receives a light beam such as infrared light emitted from the remote control 37, converts the light beam into a predetermined signal, and outputs the signal to the operation unit 34.
- the remote controller 37 is composed of a number of keys such as various confirmation buttons, numeric keys, up / down / left / right force, and a single sol key.
- the system CPU 33 When the instruction from the remote control 37 is to delete the title recorded on the DVD, the system CPU 33 identifies whether the specified title is the program stream power transport stream, and if necessary, from the DVD drive 19 to the PS The management information 120a and the TS management information 13 Oa are read, the recording areas of the titles specified from the PS management information 120a and the TS management information 130a are set as free areas, and the free area management information 110a is updated. Finally, when the information recording / reproducing apparatus 1 is terminated, the system CPU 33 sends an instruction to write the stored free area management information 110a from the memory unit 35 to the DVD drive 19.
- FIG. 8 is a conceptual diagram schematically showing a data structure to be constructed in a hard disk (HD), DVD, or the like according to the comparative example.
- PS free area management information 52 Ob for managing arrangement information such as address information of the free area in which content such as PS format moving images is not recorded is in the PS format. It is included and managed in the PS management information 520a that manages the location information such as address information of the area where the content is recorded.
- the TS free area management information 630b for managing the arrangement information of the free area in which the TS format content is not recorded is the arrangement of the area in which the TS format content has been recorded. Information is managed and included in TS management information 630a.
- a free area that manages the arrangement information of all the free areas that are distributed and unevenly distributed, etc.
- the management information 110a is shared when PS format content and TS format content are recorded.
- there is no partition, so-called partition for statically or dynamically partitioning the recording area for recording a plurality of types of recording information.
- any free space such as PS format content or TS format content, can be used for all the free space regardless of whether the free space is distributed and unevenly distributed. It is possible to record recording information in the format of this format freely without specifying a specific free space.
- the recording area of the information recording medium is more efficiently used. It is possible to use it.
- recording of recording information such as PS format and TS format content has been described.
- broadcasting via the Internet conforming to MPEG2 and MPEG4 standards is possible. It is possible to record 3 or more types of recorded information including recorded content.
- the arrangement information of the area in which the recording information such as PS format and TS format content has been recorded, and the free space there are various types of management information for managing area arrangement information.
- the present invention The various management information according to the above is recorded over a plurality of information recording media !, and it is possible to manage the arrangement information of the area where the recording information is recorded and the arrangement information of the free area.
- the terrestrial digital broadcasting As a received signal, the terrestrial digital broadcasting, the power described by taking analog broadcasting as an example BS (Broadcasting Satellite), CS (Communication Satellite), the Internet, etc. It can be applied to all broadcast forms that distribute broadcast programs.
- BS Broadcasting Satellite
- CS Common Communication Satellite
- the Internet etc. It can be applied to all broadcast forms that distribute broadcast programs.
- the power described for the DVD recorder (player) with HDD as an example of the information recording apparatus.
- the present invention is not limited to a magnetic disk or an optical disk recorder (player).
- the present invention can also be applied to various recording media and their recorders (players).
- the present invention can be applied to AV devices and game devices in which an information recording medium such as an HDD is mounted and a plurality of logical formats are recorded and the recording area can be dynamically changed.
- the information recording medium, information recording apparatus and method, information reproducing apparatus and method, and computer program according to the present invention can be used for high-density optical discs such as DVDs, and further, such as DVD recorders and DVD players. It can be used for an information recording / reproducing apparatus. Further, for example, the present invention can be used for an information recording / reproducing apparatus or the like that is mounted on or can be connected to various computer equipment for consumer use or business use.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
Description
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JP2008027495A (ja) * | 2006-07-19 | 2008-02-07 | Toshiba Corp | 光ディスク装置及び光ディスク処理方法 |
Citations (5)
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JPH11167508A (ja) * | 1997-12-02 | 1999-06-22 | Canon Inc | 情報記録方法 |
JP2001110169A (ja) * | 1999-10-12 | 2001-04-20 | Sharp Corp | データ管理方法 |
JP2001243723A (ja) * | 2000-02-29 | 2001-09-07 | Sony Corp | 記録装置および方法 |
JP2002358728A (ja) * | 2001-05-29 | 2002-12-13 | Matsushita Electric Ind Co Ltd | 情報記録媒体、情報記録媒体に情報を記録、再生する装置 |
JP2003281820A (ja) * | 2002-03-22 | 2003-10-03 | Toshiba Corp | ファイル記録装置及びファイル記録方法 |
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2005
- 2005-08-01 JP JP2006531460A patent/JP4807703B2/ja not_active Expired - Fee Related
- 2005-08-01 WO PCT/JP2005/014039 patent/WO2006016494A1/ja active Application Filing
Patent Citations (5)
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JPH11167508A (ja) * | 1997-12-02 | 1999-06-22 | Canon Inc | 情報記録方法 |
JP2001110169A (ja) * | 1999-10-12 | 2001-04-20 | Sharp Corp | データ管理方法 |
JP2001243723A (ja) * | 2000-02-29 | 2001-09-07 | Sony Corp | 記録装置および方法 |
JP2002358728A (ja) * | 2001-05-29 | 2002-12-13 | Matsushita Electric Ind Co Ltd | 情報記録媒体、情報記録媒体に情報を記録、再生する装置 |
JP2003281820A (ja) * | 2002-03-22 | 2003-10-03 | Toshiba Corp | ファイル記録装置及びファイル記録方法 |
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JP2008027495A (ja) * | 2006-07-19 | 2008-02-07 | Toshiba Corp | 光ディスク装置及び光ディスク処理方法 |
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