WO2005062184A1 - データ処理装置およびデータ処理方法 - Google Patents
データ処理装置およびデータ処理方法 Download PDFInfo
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- WO2005062184A1 WO2005062184A1 PCT/JP2004/019232 JP2004019232W WO2005062184A1 WO 2005062184 A1 WO2005062184 A1 WO 2005062184A1 JP 2004019232 W JP2004019232 W JP 2004019232W WO 2005062184 A1 WO2005062184 A1 WO 2005062184A1
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- recording medium
- data processing
- management information
- data
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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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00166—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software
- G11B20/00181—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised contents recorded on or reproduced from a record carrier, e.g. music or software using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]
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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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
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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
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00231—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a local external medium, e.g. a card
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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
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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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1277—Control data, system data or management information, i.e. data used to access or process user data for managing gaps between two recordings, e.g. control data in linking areas, run-in or run-out fields, guard or buffer zones
Definitions
- the present invention relates to a data processing device and a data processing method for processing data stored in a readable and writable recording medium in a predetermined format.
- SD memory cards registered trademark
- Memory Stick registered trademark
- Compact Flash registered trademark
- tsuta semiconductor memory or memory card
- a large-capacity node disk is useful as a storage device for storing a large amount of data inside a device.
- a removable and highly portable recording medium such as a semiconductor memory is particularly useful as a bridge medium for transferring data between data processing devices.
- the data recorded by one data processing device may be updated by another data processing device.
- the data may be moved due to a user's erroneous operation or the like, and the data may not be present at the intended place. For example, while browsing the contents of a recording medium using the browser software of a personal computer, an operation of an input device such as a mouse is mistaken, and certain data is unconsciously moved to another directory. t, the case.
- Patent Document 1 discloses, for example, a recording method and a reproducing method of a device capable of reproducing music data stored in a portable recording medium with copyright protection.
- the disclosed method uses a personal computer or the like to provide a portable storage device.
- a storage medium stores a plurality of encrypted music data, meta information about the music data, and a play list that defines a playback order of the music data, and mounts the storage medium on a personal computer or a portable device.
- the device retrieves data at a specified position according to the playlist stored in the attached recording medium, and reproduces the music data.
- Patent Document 1 JP 2001-249693 A
- a standard specifies a storage location of reproduction data on a recording medium.
- a recording medium on which data is recorded according to these standards can be reproduced by a device that conforms to the standards.
- the present invention has been made to solve the above problems, and an object of the present invention is to provide a data processing apparatus capable of reproducing data even when there is no data at a prescribed recording position. And a data processing method.
- a data processing device reads a content stored in a specific recording area of a recording medium from a recording medium storing the content and management information of the content in accordance with a predetermined format. It is a data processing device for reproducing.
- the content processing unit reads management information from the recording medium, and reads and processes the content of the recording medium according to the management information.
- the search unit determines that the content to be read is based on the management information. If the content is managed but does not exist in a specific recording area, the content is searched within a predetermined search range.
- the link information setting unit sets link information for associating the recording area of the found content with a specific recording area so that the content can be accessed using the management information. .
- a data processing method reads a content stored in a specific recording area in a recording medium from a recording medium in which the content and the content management information are stored in accordance with a predetermined format. Is a way to play.
- the management information is read from the recording medium, and the content to be reproduced is determined with reference to the management information. It is determined whether the determined content exists in a specific recording area in the recording medium. If the determined content does not exist in the specific recording area, the content is searched within a predetermined search range. Then, when the determined content is found, link information that associates the recording area of the found content with a specific recording area is set so that the content can be accessed using the management information.
- the data moved by the user's erroneous operation can be managed as if the power is as specified, so that the user can enjoy the electronic content with peace of mind.
- the data moved by the user's erroneous operation can be managed as if the power is as specified, so that the user can enjoy the electronic content with peace of mind.
- FIG. 1 is a block diagram showing a functional configuration of a data processing device according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing a hardware configuration of a data processing device according to the first embodiment.
- FIG. 3 is a diagram showing a data structure of management information according to the first embodiment.
- FIG. 4 shows a data example of management information according to the first embodiment.
- FIG. 5 is a flowchart showing processing at the time of content recording in the data processing device of the first embodiment. chart
- FIG. 6 is a flowchart showing processing at the time of content reproduction in the data processing device of the first embodiment.
- FIG. 7 A flowchart showing a data search process in the data processing device of Embodiment 1.
- FIG. 8 A diagram for explaining an example of data movement due to a user's erroneous operation on a recording medium.
- FIG. 9 A link by a symbolic link Figure showing an example of setting information
- FIG. 11 is a block diagram showing a functional configuration of a data processing device according to a second embodiment of the present invention.
- FIG. 12 is a diagram showing a hardware configuration of a data processing device according to a second embodiment.
- FIG. 14 is a diagram showing a data example of management information according to the second embodiment.
- FIG. 15 is a flowchart showing a data search process in the data processing device according to the second embodiment.
- FIG. 16A is a diagram showing a data structure of management information according to another example of the second embodiment.
- FIG. 16B is a diagram showing a data example of management information according to another example of the second embodiment.
- FIG. 17 shows a data structure of management information according to the third embodiment.
- FIG. 18 shows a data example of management information according to the third embodiment.
- FIG. 19 (a) Diagram showing the structure of a content file, (b) diagram showing an example of data of the content file
- FIG. 21 is a flowchart showing a data search process in the data processing device according to the third embodiment.
- FIG. 22 is a diagram showing another example of a hardware configuration of a data processing device.
- the data processing device described below is based on the following premise.
- the data processing device records, reproduces, and manages content on a recording medium according to a predetermined format defined by a predetermined standard (for example, SD-Audio standard). Therefore, since the content data is recorded on the recording medium according to a predetermined format, for example, the storage location of the content stored on the recording medium is defined. At the time of data reproduction, the data processing device reproduces the content existing in the specified storage location with a predetermined format.
- a predetermined standard for example, SD-Audio standard
- FIG. 1 is a block diagram showing a functional configuration of a data processing device according to Embodiment 1 of the present invention.
- the data processing device 100 includes an output unit 1, an input unit 2, a mounting unit 3, a content processing unit 5, a search unit 6, and a link information setting unit 7.
- the output unit 1 displays and reproduces electronic contents such as image data, video data, and music data.
- the input unit 2 is for the user to perform an instruction operation directly on the data processing device 100 or on the screen of the output unit 1.
- the input unit 2 also receives analog audio, video data, and audio data from outside the data processing device 100. Enter the data.
- the mounting unit 3 mounts the recording medium 4 for storing data in the data processing device 100.
- the data processing device 100 and the recording medium 4 constitute a data processing system.
- the content processing unit 5 compresses the storage data 10 such as video or audio input from the input unit 2 as necessary, and further stores it in the recording medium 4 after encrypting it as necessary. .
- the content processing unit 5 also performs a process of reproducing data stored in the recording medium 4.
- the recording medium 4 stores data 10 in a structure based on a file system such as FAT, NTFS, or the like and based on a format defined by a predetermined standard.
- a content directory that includes contents exists under a ROOT (root) directory that is the highest-level directory of the recording medium 4.
- Content data (contents A, B, and C in the figure) and management information related to the content data are stored in the content directory.
- This directory structure is specified by a predetermined format.
- the management information stores information for designating the playback order of the content, and meta information such as a content title, an artist name, and a file name.
- the search unit 6 searches the content in another area of the recording medium 4 or another recording medium. Search for.
- the link information setting unit 7 uses a mechanism such as a symbolic link for linking the file name with the entity data when the search of the content is successful in the search unit 6, as if specified in the management information.
- the link information is set as if the content exists at the position where the content exists.
- FIG. 2 is a hardware configuration diagram of the data processing device 100 according to Embodiment 1 of the present invention.
- a CPU (central processing unit) 201 executes various processes.
- the memory 202 stores programs and data necessary for processing in the CPU 201.
- An LCD (Liquid Crystal Display) 203 displays image information.
- the operation means 204 inputs operation information from the user.
- a card I / F unit (card interface unit) 205 mounts a media card 206 as a recording medium 4.
- the media card 206 is one of the non-volatile recording media, and the card IZF unit 2 Attached to 06.
- the scramble unit 207 encrypts or decrypts the content stored in the media card 206 as necessary.
- the encoder Z decoder 208 compresses the input digital data and decompresses the compressed content.
- the microphone 211 inputs analog audio information or the like that may be input terminals.
- the earphone 212 outputs audio information that can be output from the output terminal.
- the input terminal 213 inputs digital video and audio data, and outputs the input digital data to the encoder 208.
- AZD converter 209 converts analog data input from microphone 211 into digital data.
- the DZA converter 210 converts the digital data output from the decoder 208 into an analog signal, and outputs the analog signal to the earphone 212.
- the LCD 203 in FIG. 2 and the output system including the scramble unit 207, the decoder 208, the DZA converter 210, and the earphone 212 correspond to the output unit 1 in FIG.
- the operation unit 204 and the input system including the microphone 211, the A / D converter 209, the encoder 208, and the scramble unit 207 correspond to the input unit 2 in FIG.
- the card IZF unit 205 and the media card 206 correspond to the mounting unit 3 and the recording medium 4 in FIG. 1, respectively.
- the CPU 201 executes the predetermined programs loaded on the memory 202 to realize the functions of the content processing unit 5, search unit 6, and link information setting unit 7 shown in FIG.
- FIG. 3 is a diagram showing an example of a data structure of management information stored in the recording medium 4.
- the management information includes playlist information 301 indicating a playback order of the content, and track information 302 including meta information regarding the content such as a song title and an artist name.
- the play list information 301 plays a role of associating a play number indicating a play order with a track number designating the position of the track information of the content played in the play order.
- the track information 302 manages, for one piece of content, meta information in which a set of a song name indicating a title, an artist name indicating a player of the content, and a file name of the content is set.
- the track information 302 includes a plurality of meta information.
- One meta information in the track information 302 is specified by the track number.
- the meta information related to the content reproduced first is the first information in the track information 302, and the meta information related to the content reproduced second.
- the information is the third set of information in the track information 302.
- this management information the data of the content whose song name is “school song”, whose file name is “KOUKA.SA”, and the performer is “2002 graduate” is played first in the playback order. .
- FIG. 5 is a flowchart showing a process when the data processing device 100 according to Embodiment 1 of the present invention records a content on the recording medium 4.
- the processing at the time of recording the content will be described with reference to FIG.
- the data processing device 100 recognizes and mounts the recording medium 4 (Step S11).
- the recording medium 4 also reads the management file in which the management information is stored, and obtains information (specifically, a file name) on the recording destination of the management information content (step S12).
- the directory in which the content is to be recorded is uniquely defined according to a predetermined format, and the data processing device 100 holds the information of the directory name of the recording destination. Therefore, the data processing apparatus 100 can determine the recording destination based on the file name read from the management information and the directory name of the recording destination held by the data processing apparatus 100 itself. In the present embodiment and the following embodiments, it is assumed that the “content directory” immediately below the ROOT directory is defined as a recording destination in a predetermined format.
- the user gives an instruction for recording to the data processing device 100 on the input unit 2.
- the input unit 2 acquires the instruction information (S13) and sends it to the content processing unit 5.
- information to be recorded (analog voice, voice data, etc.) is input to the data processing device 100 from the outside via the input unit 2.
- the input information is analog information, it is converted to digital data by AZD conversion.
- the song name and artist name And the like are also input via the input unit 2 at the same time.
- the content processing unit 5 compresses the data input from the input unit 2 by using a predetermined compression method as necessary (Step S14). Further, when encryption is necessary, such as when copyright protection is required, data encryption is performed (step S15). According to a predetermined format, the encrypted content is stored in the recording medium 4 in the recording destination determined based on the file name acquired in step S12 (step S16). Finally, the management information is updated according to a predetermined format (step S17). That is, the playlist information 301 and the track information 302 are updated for the newly added data.
- FIG. 6 is a flowchart showing processing when the data processing device 100 according to Embodiment 1 of the present invention reproduces the content stored in the recording medium 4.
- the data processing device 100 recognizes and mounts the recording medium 4 (Step S31).
- the content processing unit 5 reads the management file storing the management information from the recording medium 4, and creates a list of reproducible contents with reference to the playlist information 301 (step S32).
- a list of reproducible contents is displayed on the output unit 1 and waits for an instruction from the user (step S33).
- the input unit 2 acquires the operation information, that is, the reproduction instruction (step S34), and sends it to the content processing unit 5.
- the content processing unit 5 Upon receiving the reproduction instruction, the content processing unit 5 performs processing to reproduce the content in the order specified in the playlist information 301. For this reason, the content processing unit 5 refers to the track information 302 specified by the track number in the order specified in the playlist information 301, and acquires the file name of the content to be reproduced. When the user instructs reproduction of a specific content, the management information corresponding to the specified content is referred to, and the file name of the content is obtained.
- the content processing unit 5 confirms whether or not the content file having the acquired file name exists at a predetermined storage location specified by a predetermined format (step S35).
- the predetermined storage location specified by the predetermined format is the “content directory” immediately below the ROOT directory. This information is held in the data processing device 100 . If the content exists at the predetermined storage position (YES in step S36), the content processing unit 5 reads the content and performs a decoding process as necessary (step S37). Subsequently, decompression processing (decoding) is performed as necessary, and output to the output unit 1 (step S38).
- step S36 determines whether the content exists at the predetermined storage location. If it is determined in step S36 that the content does not exist at the predetermined storage location, the process proceeds to content data search processing (step S39). Details of this data search processing will be described later with reference to FIG.
- step S39 the link information setting unit 7 sets link information to the found content on the recording medium 4. After setting the link information, the process proceeds to step 37, where the same processing as when the content exists at the predetermined storage position is performed.
- step S41 the error processing (step S41) such as outputting an error message is performed, and then the playable content is output. Then, the process returns to step S33 for displaying a list, and the same processing is repeated thereafter.
- the data search process is executed by the search unit 6.
- step S51 the directory in which the management information exists is checked, and it is confirmed whether a lower directory of the content directory exists. If the file exists (YES in step S51), the total number of files existing in the lower directory is extracted and set to the total number of files NF, and the value of the counter FC is set to 0 (step S52).
- step S53 1 is added to the counter FC (step S53).
- the counter FC is compared with the total number of files NF. If the counter FC exceeds the total number of files NF (YES in step S54), it means that all the files in the directory have been investigated, and the process is terminated.
- step S55 If the counter FC exceeds the total file number NF of! /, Na! / (NO in step S54), the FC-th file name in the lower directory is obtained (step S55), and the obtained file name is It is determined whether the file name matches the file name of the content specified by the user (step S56). If they match, the link information setting unit 7 sets the link information on the recording medium 4 (step S5 7). If they do not match, the process returns to step S53 to acquire the next file name in the lower directory, and performs the same processing as above (step S53-56).
- the data search processing shown in FIG. 7 is unnecessary for the content data immediately after being recorded on the recording medium 4.
- the recording medium 4 is detachable, the recording medium 4 is removed from the data processing device 100 after the recording process according to the recording process flow shown in FIG. 5, and another data processing device (for example, a personal computer) is used. It is also conceivable that it is installed in the slot of ()
- software that displays the contents of the recording medium 4 in a hierarchical structure of files, directories, and drivers for example, software such as an explorer mounted on Windows (registered trademark) is used. Can be displayed.
- data on the recording medium 4 can be easily copied or moved using a mouse, a keyboard, or the like.
- data on the recording medium 4 may be moved due to an erroneous operation regardless of the user's intention, and the processing shown in FIG. 7 is effective in such a case.
- FIG. 8A is a diagram showing a case where content data is stored at a position in the recording medium 4 that conforms to a predetermined format, that is, a normal state.
- a content directory immediately below the ROOT directory.
- management information and files of content A, content B, and content C there are management information and files of content A, content B, and content C, and an extension directory for extension.
- FIG. 8B shows a configuration in a case where the user has accidentally moved the file of the content B into the extension directory from the state shown in FIG. 8A.
- the user does not notice that he or she has moved the data by himself, extracts the recording medium 4 as it is, and attaches it to the data processing device 100.
- the recording medium 4 in such a state is mounted on the data processing device 100, the above-described data search processing shown in FIG. 7 is required.
- FIG. 9 is an example of setting link information using a function called “symbol link” provided by a UNIX (registered trademark) file system.
- a symbolic link is a function that allows access to the main body (entity) of data or a program file using another name (path name) in addition to its original name (path name). With this function, it is possible to access files as if a single file were stored in multiple different locations on the directory tree. The file entity is not copied to these multiple locations, so the storage capacity of the storage medium managed by the file system can be saved.
- the link information setting unit 7 creates a symbolic link named “content B” under “content directory”.
- the entity of the symbolic link is a file to which an attribute indicating that the link is a symbolic link is added, and the path name of the link destination where the entity data is stored is stored as the file content.
- the content of the symbolic link file of "content B" is " ⁇ content directory ⁇ extension directory ⁇ content B”.
- the file system changes the path name of the access destination to the path name specified in the contents of the symbolic link file. That is, when an access to " ⁇ content directory ⁇ content B" occurs, the file system changes the path name to " ⁇ content directory ⁇ extended directory ⁇ content B" and accesses the file entity.
- ⁇ is a delimiter that separates the directory tree hierarchy, and the ROOT directory is assumed to be represented by " ⁇ ". That is, by accessing the symbolic link created under the “content directory”, it becomes possible to access “content B” moved under the “extension directory” after the erroneous operation in FIG.
- the above is an example of using the symbolic link function provided by the UNIX-type file system as link information.
- the Windows (registered trademark) -type system is also realized by a function called "shortcut”. It is possible to do.
- the data processing device of the present embodiment does not include the components necessary for the content recording operation.
- FIG. 11 is a block diagram showing a functional configuration of a data processing device according to Embodiment 2 of the present invention.
- the data processing device 100b of the present embodiment is different from the data processing device 100 of the first embodiment in that the data processing device 100b of the present embodiment includes a management information storage unit 8 for holding the management information read from the recording medium 4.
- the management information storage unit 8 further stores link information.
- FIG. 12 is a hardware configuration diagram of a data processing device according to the second embodiment. The difference from the first embodiment is that the data processing device of the present embodiment is only for reproduction and does not have the components 209, 211, and 213 necessary for the content recording operation.
- the basic processing flow of the data processing device 100b in the second embodiment is the same as that of the data processing device 100 in the first embodiment, and thus only different parts will be described.
- FIG. 13 is a flowchart of a reproduction process of the data processing device 100b according to the second embodiment.
- the content processing unit 5 recognizes the recording medium 4 (S71), reads management information from the recording medium 4 (S72), and stores the read management information in the management information storage unit 8 (S73). ). Thereafter, a list of reproducible data is displayed (S74), and upon receiving a reproduction instruction by the user (S75), the content processing section 5 refers to the management information stored in the management information storage section 8. Then, it is checked whether the specified content exists at the position specified by the predetermined format (step S76). If the content exists (YES in step S77), the content is subjected to decryption processing, decompression processing, and the like as necessary, and output (S78, S79).
- a data search process is performed (S80). If the content is found by the data search process (YES in step S81), the link information setting unit 7 stores information equivalent to the link information in the management information stored in the management information storage unit 8. Thus, the management of the management information storage unit 8
- the reason for updating the information is that the data processing device 100b of the present embodiment cannot perform a write operation on the recording medium 4 because it is exclusively for reproduction.
- FIG. 14 shows an example of management information data stored in the management information storage unit 8 by the link information setting unit 7 as a result of the above-described data search process (S80).
- the file name corresponding to the track number 3 is S "EXT ⁇ WAKARE.SA”. This file name points to a file "WAKAR E. SA” that exists in an extension directory called "EXT”.
- FIG. 15 is a flowchart of the data search process (S80) in the above-described data reproduction process.
- step S97 As a result of searching the lower directory, if the specified content is found, the link information is stored in the management information storage 8 (step S97).
- Other processes (S91-S96) are the same as those shown in FIG. 7 (S51-S56).
- the management information read from the recording medium 4 is stored in the management information storage unit 8. Thereafter, updating of the management information and the like, for example, addition of the management information relating to the content data found by the data search process is performed to the management information storage unit 8.
- the content processing unit 5 reproduces the content according to the information stored in the management information storage unit 8.
- the corresponding content data is searched based on the management information and the link information is set. Therefore, it can be handled as data based on a prescribed format by the management information in the data processing device.
- the data processing device of the present embodiment is a reproduction-only device, it may have a recording function.
- FIG. 16B is a diagram showing a specific example of the configuration shown in FIG. 16A.
- the data processing device 100b reads the recording medium ID, and stores the read recording medium ID and the read recording medium ID in the management information storage unit 8. By comparing the recording medium IDs, it is possible to recognize whether or not the recording medium 4 has been changed before and after the power is turned off. If it has not been changed, the recording medium ID stored in the management information storage section 8 is used as it is, and if it has been changed, management information is newly read from the recording medium 4 and stored in the management information storage section 8 I do. This makes it possible to always use the management information according to the recording medium.
- the functional configuration and hardware configuration of the data processing device according to the present embodiment are the same as those of the first embodiment.
- the management information further manages a content ID, which is identification information uniquely assigned to each content.
- FIG. 17 is a diagram showing an example of a data structure of management information stored in the recording medium 4 of the present embodiment.
- FIG. 18 is a diagram illustrating an example of data stored according to the data structure of the management information.
- the playlist information 1601 shown in FIGS. 17 and 18 has the same configuration and function as the playlist information 301 shown in FIGS. 3 and 4, except that it includes a content ID.
- the track information 1602 shown in FIGS. 17 and 18 has the same configuration and function as the track information 302 shown in FIGS.
- FIG. 19A shows an example of a data structure of a content file
- FIG. 19B shows an example of data stored according to the data structure of a content file.
- the content file 1801 is composed of a content ID 1801a uniquely assigned to the content and an entity data portion 1801b of the content.
- FIG. 19 (b) shows the configuration of a content file named "WAKARE. SA”. "AB234" is stored as the content ID 1801a for the entity data portion 1801b of the content file.
- the flowchart of FIG. 20 differs from the flowchart of FIG. 5 of the first embodiment in that a step (step S115) of acquiring a unique content ID for the content to be recorded is added.
- the content ID acquired in this step is stored in the content at the time of recording the compressed data in the recording destination in accordance with a prescribed format in step S117.
- This content ID is also used when the playlist information 1601 of the management information is updated in step S118.
- the processing procedure at the time of reproduction according to the present embodiment is the same as the processing shown in FIG. 6 of the first embodiment, and a description thereof will not be repeated.
- the flowchart of FIG. 21 differs from the flowchart of FIG. 7 of the first embodiment in that a content ID is used instead of a file name to find a content file to be searched.
- the content when the content is managed by the ID included in the content file, even if the content file exists in a location different from the prescribed format, the content is managed based on the management information. Search and link to corresponding content data Since information is set, it can be handled as data based on a prescribed format.
- the present invention can be applied even when the file name of the content file is changed due to a malfunction of the user or the like.
- the key-separated content distribution service means a service that distributes content data and key data obtained by encrypting the content to the user through different routes.
- the management file including the key data is stored on a removable recording medium
- the content data is stored on a recording medium such as a hard disk (HDD) that can be accessed by the data processing device.
- the key data and the content data are stored on different recording media, and the storage position of the content generally differs depending on the data processing device. Therefore, means for associating the key data with the content is required.
- the association can be performed by the content ID, and since the ID is stored in both the management information including the key data and the content data, the corresponding file can be easily searched. Become.
- the memory is also used as a management information storage unit in the data processing apparatus. By storing the area and registering the file as a result of the search in the management information storage unit, a method that can process without writing data in the recording medium 4 may be adopted.
- the search time can be reduced when the number of contents stored in the recording medium is large.
- a recording function may or may not be provided as long as it has at least a reproducing function.
- the management information is divided into playlist information and track information and managed. As long as the information that identifies the location of the content is included, the configuration does not matter.
- a data search range in the case where no content is found may be set as a lower directory of the specified directory (content directory).
- the data search range may be a directory at the same level as the specified directory or a directory in a higher hierarchy.
- all areas of the recording medium may be searched.
- another recording medium another memory card / node disk, etc.
- SANO a network
- a peripheral device can be accessed by the data processing device.
- an arbitrary recording area may be searched.
- a scrambling unit for performing an encryption process is provided.
- the scrambling processing unit may not be present.
- the user instructs reproduction or recording.
- the data processing device itself may automatically execute a predetermined process.
- the recording medium 4 is a recording medium that can be attached to and detached from the mounting unit 3, but instead of a detachable recording medium, a data processing device such as a hard disk is used. May be used as a recording medium (hereinafter, referred to as a “data storage unit”). As shown in Fig. 22, the data processing device is detachable from the data storage unit (hard disk 220). It may be provided with both a simple recording medium (media card 206). In this case, if the content data to be reproduced does not exist at the predetermined storage position, the search may be performed by specifying both the removable recording medium and the data storage unit as the search range.
- the content data is preferentially stored in a removable recording medium, and when the free space of the recording medium becomes equal to or less than a predetermined threshold, the content data is stored in the data storage unit, and the contents stored in both are stored.
- the management information for managing the data may be put together and stored in a removable recording medium.
- some or all of the functions of the data processing device can be realized by software executable by a computer.
- the software may be a program executable by a computer, and the program may be provided by being stored in an information recording medium readable by a computer or the like.
- the present invention even if data recorded on a rewritable recording medium in accordance with a predetermined standard is moved due to carelessness or erroneous operation of a user, and the data storage state becomes a state outside the standard, the content is not
- the present invention can be applied to, for example, a data processing device using a recordable optical disk or a semiconductor memory card.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
Description
Claims
Priority Applications (2)
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US10/596,780 US7657562B2 (en) | 2003-12-24 | 2004-12-22 | Data processing apparatus and data processing method |
JP2005516513A JPWO2005062184A1 (ja) | 2003-12-24 | 2004-12-22 | データ処理装置およびデータ処理方法 |
Applications Claiming Priority (2)
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JP2003426809 | 2003-12-24 | ||
JP2003-426809 | 2003-12-24 |
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WO2005062184A1 true WO2005062184A1 (ja) | 2005-07-07 |
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PCT/JP2004/019232 WO2005062184A1 (ja) | 2003-12-24 | 2004-12-22 | データ処理装置およびデータ処理方法 |
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US (1) | US7657562B2 (ja) |
JP (1) | JPWO2005062184A1 (ja) |
TW (1) | TW200527315A (ja) |
WO (1) | WO2005062184A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007109181A (ja) * | 2005-10-17 | 2007-04-26 | Canon Inc | データ処理装置及びその制御方法、コンピュータプログラム、及び記憶媒体 |
JP2009123309A (ja) * | 2007-11-19 | 2009-06-04 | Alpine Electronics Inc | コンテンツデータ再生装置 |
JP2015524119A (ja) * | 2012-08-22 | 2015-08-20 | シャオミ・インコーポレイテッド | メッセージ表示方法、メッセージ表示装置、プログラム及び記録媒体 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4701748B2 (ja) * | 2005-02-25 | 2011-06-15 | ソニー株式会社 | 情報処理装置、情報記録媒体製造装置、情報記録媒体、および方法、並びにコンピュータ・プログラム |
GB2428834A (en) * | 2005-08-04 | 2007-02-07 | Ibm | Linking objects with graphical user interface items |
US8218947B2 (en) * | 2006-12-04 | 2012-07-10 | Victor Company Of Japan, Ltd. | Video data recording apparatus and method, and video data reproducing apparatus and method |
US8347128B2 (en) * | 2007-03-01 | 2013-01-01 | Panasonic Corporation | Data processing device and power control method |
US9178957B2 (en) * | 2007-09-27 | 2015-11-03 | Adobe Systems Incorporated | Application and data agnostic collaboration services |
JP2009110209A (ja) * | 2007-10-29 | 2009-05-21 | Panasonic Corp | 演算処理装置、プロセッサ、プログラム変換装置およびプログラム |
US9420014B2 (en) * | 2007-11-15 | 2016-08-16 | Adobe Systems Incorporated | Saving state of a collaborative session in an editable format |
US20100121891A1 (en) * | 2008-11-11 | 2010-05-13 | At&T Intellectual Property I, L.P. | Method and system for using play lists for multimedia content |
US9294291B2 (en) | 2008-11-12 | 2016-03-22 | Adobe Systems Incorporated | Adaptive connectivity in network-based collaboration |
US9037620B2 (en) * | 2009-12-16 | 2015-05-19 | Microsoft Technology Licensing, Llc | File system active symbolic link |
KR102081167B1 (ko) * | 2012-11-13 | 2020-02-26 | 삼성전자주식회사 | 메모리 장치를 이용하는 방법 및 그 장치 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001034515A (ja) * | 1999-07-22 | 2001-02-09 | Ricoh Co Ltd | 文書管理方法およびその文書管理方法を記憶した記憶媒体 |
JP2002116935A (ja) * | 2000-10-12 | 2002-04-19 | Sony Corp | 情報処理装置および方法、並びにプログラム格納媒体 |
JP2003233517A (ja) * | 2002-02-13 | 2003-08-22 | Nec Corp | 文書管理システム、文書管理サーバ、ディレクトリサーバ、クライアント端末及びプログラム |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63744A (ja) | 1986-06-20 | 1988-01-05 | Sanyo Electric Co Ltd | 情報フアイル装置 |
JP2865467B2 (ja) | 1991-11-22 | 1999-03-08 | 富士写真フイルム株式会社 | 画像データ供給システム |
WO2000074054A2 (en) | 1999-05-28 | 2000-12-07 | Matsushita Electric Industrial Co., Ltd. | Semiconductor memory card, apparatus for recording data onto the semiconductor memory card, and apparatus for reproducing data of the semiconductor memory card |
JP3327897B2 (ja) | 1999-05-28 | 2002-09-24 | 松下電器産業株式会社 | 半導体メモリカード、及びその再生装置 |
KR100665785B1 (ko) * | 2000-06-02 | 2007-01-09 | 마츠시타 덴끼 산교 가부시키가이샤 | 기록매체, 라이센스 관리장치, 기록 및 재생장치 |
JP4806840B2 (ja) * | 2000-08-11 | 2011-11-02 | ソニー株式会社 | 携帯電話機 |
JP2002259010A (ja) * | 2001-03-05 | 2002-09-13 | Fujitsu Ltd | ショートカットアイコンの自動作成・削除プログラム |
JP2004153299A (ja) * | 2001-12-13 | 2004-05-27 | Ricoh Co Ltd | プログラム、記録媒体、情報記録装置及び情報記録方法 |
WO2004075063A1 (ja) * | 2003-02-20 | 2004-09-02 | Matsushita Electric Industrial Co., Ltd. | 情報記録媒体及びその領域管理方法 |
US20050216684A1 (en) * | 2003-11-21 | 2005-09-29 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, data processing apparatus, and recording region setting method of information recording medium |
US7401174B2 (en) * | 2003-12-16 | 2008-07-15 | Matsushita Electric Industrial Co., Ltd. | File system defragmentation and data processing method and apparatus for an information recording medium |
US7801930B2 (en) * | 2004-05-10 | 2010-09-21 | Panasonic Corporation | Recording medium, host device, and data processing method |
-
2004
- 2004-12-22 WO PCT/JP2004/019232 patent/WO2005062184A1/ja active Application Filing
- 2004-12-22 JP JP2005516513A patent/JPWO2005062184A1/ja active Pending
- 2004-12-22 US US10/596,780 patent/US7657562B2/en not_active Expired - Fee Related
- 2004-12-23 TW TW093140252A patent/TW200527315A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001034515A (ja) * | 1999-07-22 | 2001-02-09 | Ricoh Co Ltd | 文書管理方法およびその文書管理方法を記憶した記憶媒体 |
JP2002116935A (ja) * | 2000-10-12 | 2002-04-19 | Sony Corp | 情報処理装置および方法、並びにプログラム格納媒体 |
JP2003233517A (ja) * | 2002-02-13 | 2003-08-22 | Nec Corp | 文書管理システム、文書管理サーバ、ディレクトリサーバ、クライアント端末及びプログラム |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007109181A (ja) * | 2005-10-17 | 2007-04-26 | Canon Inc | データ処理装置及びその制御方法、コンピュータプログラム、及び記憶媒体 |
JP2009123309A (ja) * | 2007-11-19 | 2009-06-04 | Alpine Electronics Inc | コンテンツデータ再生装置 |
JP2015524119A (ja) * | 2012-08-22 | 2015-08-20 | シャオミ・インコーポレイテッド | メッセージ表示方法、メッセージ表示装置、プログラム及び記録媒体 |
US9800530B2 (en) | 2012-08-22 | 2017-10-24 | Beijing Xiaomi Technology Co., Ltd. | Message display method and device |
Also Published As
Publication number | Publication date |
---|---|
US7657562B2 (en) | 2010-02-02 |
JPWO2005062184A1 (ja) | 2010-02-25 |
US20070174334A1 (en) | 2007-07-26 |
TW200527315A (en) | 2005-08-16 |
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