WO2005125196A1 - 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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- WO2005125196A1 WO2005125196A1 PCT/JP2005/011347 JP2005011347W WO2005125196A1 WO 2005125196 A1 WO2005125196 A1 WO 2005125196A1 JP 2005011347 W JP2005011347 W JP 2005011347W WO 2005125196 A1 WO2005125196 A1 WO 2005125196A1
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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
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
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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
- 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
Definitions
- Information recording medium information recording apparatus and method, information reproducing apparatus and method, and computer program
- the present invention relates to an information recording medium such as a DVD, an information recording apparatus and method such as a DVD recorder, an information reproducing apparatus and method such as a DVD player, and a computer.
- the present invention relates to the technical field of a computer program functioning as a playback device.
- DVD recorders or hard disk recorders for recording and reproducing video contents (audio contents) such as movie programs and television programs have become widespread.
- Some of such recorders have, for example, a function of reproducing only a highlight scene or a function of automatically cutting and recording / reproducing a CM portion.
- Patent Document 1 For example, in reproduction of only a highlight scene, as shown in Patent Document 1, a configuration in which information indicating a reproduction section having a relatively high audio level is extracted and video content or the like in the reproduction section is reproduced is specifically described. As an example.
- CMs stereo sound is output according to the power of stereo sound or monaural sound, or stereo sound or -Korean sound.
- One specific example is a configuration in which the corresponding CM portion is automatically cut.
- a configuration has been proposed in which a highlight scene is detected based on information transmitted from a Sano-ku provided separately from the recorder or a CM portion is automatically cut.
- Patent Document 1 JP 2003-87728 A
- the present invention has been made in consideration of, for example, the above-described conventional problems.
- an information recording medium, an information recording apparatus and a method, and an information reproducing method capable of realizing various modes such as reproduction. It is an object to provide a computer program that causes a device and a method and a computer to function as such an information recording device or an information reproducing device. Means for solving the problem
- the information recording medium of the present invention includes: total content information; and feature amount information indicating a characteristic of content content indicated by at least one partial content information which is a part of the entire content information. Has been recorded.
- the entire content information including, for example, a television program and a movie program is recorded, so that the user can view the entire content information.
- feature amount information indicating features of partial content information corresponding to a part of the entire content information is further recorded.
- the feature amount information indicates a feature included in the content content of the partial content information (for example, a video or an audio indicated by the partial content information).
- the features include, for example, the luminance, chromaticity, lightness, saturation, hue, RGB components of the video, the recorded format (eg, bitmap format, JPEG format, etc.), the compression ratio, and the manner in which these changes occur.
- Specific examples include the characteristics shown, or the characteristics such as the volume, range, scale, sound quality, and the like of the voice, and the manner of change thereof.
- the overall content information is subdivided into a plurality of partial content information, and the feature amount information is defined by each of the plurality of partial content information. Show the features.
- the whole of the entire content information is subdivided into a plurality of partial content information, and partial content information having a desired characteristic is selected from the plurality of subdivided partial content information. It becomes possible to reproduce it.
- a part of the entire content information may be subdivided into a plurality of partial content information.
- the size of the partial content information is a size of a minimum unit unit (for example, VOBU described later) when recording the entire content information.
- the feature amount information can be suitably recorded in accordance with the format in which the entire content information is recorded.
- the feature amount information indicating the feature for each minimum unit is recorded, it is possible to realize a selective reproduction operation of the partial content information selected in units of more detail.
- the entire content information includes at least audio content
- the feature amount information is an average of volume values of the audio content in the partial content information. And at least one of a tendency of increase and decrease of the volume value in the partial content information and a difference between the volume values of a start portion and an end portion of the partial content information.
- the sound quality and the musical scale are not limited to the volume value.
- the average, the tendency of increase or decrease, the difference, and the like for the other features, etc. may include various parameters and the like corresponding to the other features.
- the entire content information includes at least video content
- the feature amount information is an average of brightness values of the video content in the partial content information.
- the tendency of increase and decrease of the luminance value in the partial content information and the difference between the luminance values of the start portion and the end portion of the partial content information is an average of brightness values of the video content in the partial content information.
- the average, increase / decrease tendency, difference, and the like regarding other characteristics such as saturation and hue, which are not limited to the volume value, may include various parameters corresponding to the other characteristics. That's all right! / ,.
- the overall content information includes at least audio content
- the feature amount information includes a volume of the audio content over the entire reproduction time of the overall content information.
- the entire content information includes at least video content
- the feature amount information is a luminance of the video content over all reproduction times of the entire content information. It contains luminance change information indicating a change in value.
- the characteristic amount information is recorded such that the partial content information includes the characteristic amount information indicating the characteristic of the partial content information.
- one piece of partial content information is recorded including feature amount information indicating a characteristic of the one piece of partial content information itself, and the other piece of partial content information is stored in the other piece of content information.
- the feature amount information indicating the feature of the content information itself is included and recorded. Therefore, while reproducing the entire content information (or one partial content information), it is possible to refer to the feature amount information regarding the entire content information (or one partial content information) in parallel. Therefore, the entire content information is recorded for reference of the feature amount information, and there is no need to access a recording area that is far away from the recording area, and an efficient reproduction operation can be realized.
- an information recording apparatus of the present invention is an information recording apparatus that records the entire content information on the information recording medium of the present invention (including its various aspects), First recording means for recording the entire content information, creating means for acquiring the feature from the entire content information and creating the feature amount information, and second recording means for recording the created feature amount information And
- the entire content information can be recorded on the information recording medium by the operation of the first recording means.
- the operation of the creating means can create the feature amount information.
- the creation unit acquires and analyzes the entire content information recorded by the first recording unit to extract a feature of the content content of at least one piece of partial content information, and creates feature amount information. Then, the feature amount information created by the creating unit is recorded on the information recording medium by the operation of the second recording unit.
- the information recording apparatus of the present invention it is possible to preferably record the entire content information and the feature amount information.
- the information recording apparatus of the present invention can also adopt various aspects.
- the first recording means records the entire content information by recording the partial content information
- the second recording means records the partial content information.
- the feature amount information is recorded so as to include the feature amount information indicating the feature of the partial content information.
- the one piece of partial content information is recorded with the feature amount information indicating the feature of the one piece of partial content information itself, and the other piece of content information is recorded in the other piece of content.
- the feature amount information indicating the feature of the content information itself is included and recorded.
- the feature amount information relating to the entire content information (or one partial content information) is concurrently reproduced. Can be referenced. Therefore, it is not necessary to access a recording area distant from the recording area where the entire content information is recorded in order to refer to the feature amount information, and an efficient reproduction operation can be realized.
- the overall content information includes at least audio content
- the creating unit is configured to calculate an average of volume values of the audio content in the partial content information.
- generating the feature amount information including at least one of a tendency of increase and decrease of the volume value in the partial content information and a difference between the volume values of a start portion and an end portion of the partial content information.
- the entire content information includes at least video content
- the creation unit is configured to calculate an average of brightness values of the video content in the partial content information.
- the feature amount information includes at least one of a tendency of increase and decrease of the luminance value in the partial content information and a difference between the luminance values of a start portion and an end portion of the partial content information.
- the first recording means selects the partial content information having the desired characteristic from the entire content information based on the generated characteristic amount information. To record.
- the recording of the entire content information is performed or instead of the entire content information capability, one or more partial content information having a desired characteristic is selected in advance and the information recording medium is selected. Can be recorded. Due to this, during playback operation, Even if the reproducing operation is not performed while referring to the amount information, it is possible to reproduce the partial content information having the desired characteristics. Therefore, it is possible to realize various reproduction operations while further reducing the load of the reproduction operation.
- an information recording method of the present invention is an information recording method of recording the entire content information on the above-described information recording medium of the present invention (including its various aspects).
- a first recording step of recording overall content information a creating step of acquiring the feature from the overall content information and creating the feature amount information, and a second recording step of recording the created feature amount information
- the 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 that reproduces the entire content information recorded on the information recording medium of the present invention (including its various aspects).
- the feature amount information can be obtained by the operation of the obtaining unit. Then, based on the acquired feature amount information, the reproducing unit selectively reproduces partial content information having a desired characteristic from the entire content information.
- the features can be extracted relatively easily by analyzing the entire content information and referring to the feature amount information which does not need to extract the features. Therefore, it is possible to realize various reproduction operations based on the feature amount information that does not impose a load on the reproduction operation of the entire content information (or partial content information). As a result, according to the information reproducing apparatus of the present invention, it is possible to relatively easily realize various modes such as reproduction.
- the information reproducing apparatus of the present invention can also adopt various aspects.
- the overall content information includes at least audio content
- the acquisition unit determines the feature amount information as the audio in the partial content information. At least one of an average of the volume values of the content, a tendency of increase and decrease of the volume value in the partial content information, and a difference between the volume values of a start portion and an end portion of the partial content information is acquired.
- the overall content information includes at least video content
- the acquisition unit determines the feature amount information as the video in the partial content information. At least one of an average of the brightness values of the content, a tendency of increase and decrease of the brightness value in the partial content information, and a difference between the brightness values at the start portion and the end portion of the partial content information is acquired.
- Another embodiment of the information reproducing apparatus of the present invention further comprises a setting means for setting the desired characteristic.
- a “desired feature” which is a criterion for selecting partial content information to be reproduced by the setting unit.
- the user himself / herself can set the "desired feature” by the operation of the setting means including the external input means.
- the “desired feature” may be automatically set by the operation of a setting unit including a CPU or the like. Therefore, it is possible to suitably realize more various playback operations or various playback operations desired by the user.
- the information reproducing method of the present invention has the above-mentioned information recording method of the present invention.
- An information reproducing method for reproducing the entire content information recorded on a medium comprising: an acquiring step of acquiring the characteristic amount information; and And a reproducing step of selectively reproducing the partial content information having desired characteristics from the entire content information.
- the first computer program according to the present invention causes a computer to function as the above-described information recording device (including its various forms) in order to solve the above problems. More specifically, a computer is caused to function as at least a part of the first recording unit, the creating unit, and the second recording unit in the information recording device described above.
- the second computer program according to the present invention causes a computer to function as the above-described information reproducing apparatus (including its various forms). More specifically, it causes a computer to function as at least a part of the acquisition unit and the reproduction unit in the information reproduction device described above.
- the computer program is read into a computer from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program. If executed, or if the computer program is executed after being downloaded to a computer via communication means, the above-described information recording apparatus or information reproducing apparatus of the present invention can be realized relatively easily.
- the first or second computer program of the present invention can also adopt various aspects.
- the first computer program product in the computer-readable medium is provided with the above-mentioned information recording device (including its various aspects).
- a program instruction executable by a computer is tangibly embodied, and the computer is caused to function as at least a part of the first recording unit, the creating unit, and the second recording unit.
- a second computer program product in a computer-readable medium is capable of executing a program instruction executable by a computer provided in the above-described information reproducing apparatus (including its various aspects). And the computer is caused to function as at least a part of the acquisition unit and the reproduction unit.
- the computer program product can be transferred to a computer from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program product.
- a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program product.
- the computer program product By reading or by downloading the computer program product, which is, for example, a transmission wave, to a computer via communication means, the above-described information recording apparatus or information reproducing apparatus of the present invention can be implemented relatively easily.
- the computer program product may also be configured with a computer-readable code (or computer-readable instruction) capable of functioning as the above-described information recording device or information reproducing device of the present invention.
- the information recording medium of the present invention As described above, according to the information recording medium of the present invention, overall content information and feature amount information are recorded. Therefore, if the entire content information is reproduced based on the feature amount information, it is possible to relatively easily realize various reproduction operations.
- the information recording apparatus or method includes the first recording means, the creating means and the second recording means, or the first recording step, the creating step and the second recording step. Therefore, it is possible to preferably record the entire content information and the feature amount information on the information recording medium according to the present invention.
- FIG. 1 shows a basic structure of an optical disc as an example of an embodiment according to the information recording medium of the present invention.
- the upper part is a schematic plan view of an optical disc having a plurality of areas.
- FIG. 2 is a data structure diagram conceptually showing a specific data structure (in particular, a data structure including audio feature amount information) of the information recording medium according to the present embodiment.
- FIG. 3 is an explanatory diagram conceptually showing the relationship between VOBUs, GOPs, and audio frames.
- FIG. 4 is a graph showing a change in volume with respect to a reproduction time, which is created based on audio feature amount information.
- FIG. 5 is a table conceptually showing one specific example of various playback operation modes.
- FIG. 6 is a graph showing an example of a reproduction section reproduced based on audio feature amount information.
- FIG. 7 is a graph showing another example of a reproduction section reproduced based on audio feature amount information.
- FIG. 8 is a graph showing another example of a reproduction section reproduced based on audio feature amount information.
- FIG. 10 is a graph showing another example of a reproduction section reproduced based on audio feature amount information.
- FIG. 11 is a data structure diagram conceptually showing a specific data structure (particularly, a data structure including video feature amount information) of the information recording medium according to the embodiment.
- FIG. 12 is a block diagram conceptually showing a basic configuration of an embodiment according to the information recording apparatus and the information reproducing apparatus of the present invention.
- FIG. 13 is a flowchart conceptually explaining the flow of the entire recording operation of the information recording / reproducing apparatus according to the embodiment.
- FIG. 14 is a flowchart conceptually showing the entire flow of the reproducing operation (No. 1) of the information recording / reproducing apparatus according to the present embodiment.
- FIG. 15 is a graph showing a reproduction section of content data reproduced by a reproduction operation (No. 1).
- FIG. 16 is a flowchart conceptually showing the entire flow of a reproducing operation (No. 2) of the information recording / reproducing apparatus according to the present embodiment.
- FIG. 17 is a graph showing a reproduction section of content data reproduced by a reproduction operation (No. 2).
- FIG. 18 A conceptual flow of the entire reproducing operation (No. 3) of the information recording / reproducing apparatus according to the present embodiment It is a flowchart shown.
- FIG. 19 is a graph showing a playback section of content data played back by a playback operation (No. 3).
- FIG. 1 shows a schematic plan view of the structure of an optical disk having a plurality of areas on the upper side, and also shows the area structure in the radial direction on the lower side in association with a conceptual diagram.
- the optical disc 100 has a lead-in area 104 on the recording surface on the disc body having a diameter of about 12 cm, which is the same as a DVD, with the inner peripheral force directed toward the outer periphery with the center hole 102 as the center.
- An area 106 and a lead-out area 108 are provided.
- each area for example, groove tracks and land tracks are alternately provided spirally or concentrically around the center hole 102, and the groove tracks may be wobbled. Prepits may be formed on one or both tracks.
- the present invention is not particularly limited to an optical disk having such three areas. For example, even if the lead-in area 104 and the lead-out area 108 do not exist, the file structure described below can be constructed. Further, the lead-in area 104 and the lead-out area 108 may have a further subdivided configuration.
- the optical disc 100 may be a read-only optical disc in which data is recorded in advance by, for example, embossed pits or recording marks, or recording (writing) may be performed a plurality of times or only once.
- a recordable optical disc that can be recorded by various recording methods such as a magneto-optical method and a phase change method may be used.
- FIG. 2 is a data structure diagram conceptually showing a specific data structure (particularly, a data structure including audio feature amount information 150) of the information recording medium according to the present embodiment.
- a description will be given using a data structure configured on a DVD, which is a specific example of the optical disc 100.
- V A single title that is, a VOB (Video Object) corresponding to the “entire content information” of the present invention, specifically one movie program or TV program
- OBUl 10s a plurality of OBUl 10s. I do.
- the VOBU 110 has an RDI (Real-time Data Information) 121, a plurality of video packs (V_PCK: Video Pack), and a plurality of audio packs (A_PCK: Audio Pack). are doing.
- a video pack and an audio pack are units that are formed (packed) by time-division multiplexing of video content and audio content including content data, and these video packs and audio packs are included in a playback time axis. By reconstructing along, one video content or audio content is played.
- it may have a navigation pack (not shown) or a sub-picture pack (S-PCK: Sub-picture Pack).
- the video pack and the audio pack included in one VOBU 110 correspond to the video frame and the audio frame included in one GOP (Group Of Picture) in MPEG (Moving Picture Experts Group), respectively. I have.
- the video frames included in one GOP are packed into one video pack in one VOBU 110.
- audio frames included in one GOP are packed into one audio pack in one VOBU110.
- FIG. 3 is an explanatory diagram conceptually showing the relationship between the VOBU 110, the GOP, and the audio frame.
- one GOP corresponds to one VOBU 110
- one GOP includes, for example, about ten audio frames.
- One VOBU 110 corresponds to a playback time of about 0.5 seconds.
- the RDI 121 is arranged at the start address of the VOBU 110, and includes a knock header (Pack_header), a system header (System_header), and an MNFI (Manufacturer's Information) 131 starting from the 59th byte of the RDI 121, for example. have.
- a knock header Pack_header
- System_header system header
- MNFI Manufacturer's Information
- the MNFI 131 stores an MNF-ID (Manufacturer's ID) 141 for recording identification information unique or uniquely determined for each manufacturer of the optical disc 100, and various information unique to each manufacturer of the optical disc 100.
- MNFI DT (Manufacture's Data) 1 for recording It has 41 and reserved areas. Specifically, the reserved area occupies, for example, the first three bytes of the recording area of the MNFI 131, and the MNFI-DT 141 has a size of, for example, 1944 bytes.
- the MNFI-DT 142 has, as the audio feature amount information 150, a volume tendency flag 151, a volume difference value 152, and a volume average value 153 (further, a reserved area 154). .
- the volume tendency flag 151 is information indicating a tendency of a change in the volume value of the audio content indicated by the audio frame included in one GOP (ie, one VOBU 110). 151 is information indicating a tendency of a change in volume during a GOP corresponding to VOBU 110 including itself. That is, when the volume value of the audio content indicated by the audio frame included in one GOP is differentiated with respect to the time axis, the information indicates the differential value (that is, the degree of inclination of the graph).
- the volume tendency flag 151 has a size of, for example, 2 bits. For example, if there is no change in the volume during one GOP (that is, the differential value is approximately “0”), a flag “OOb” is recorded.
- a flag “Olb” is recorded.
- a flag “10b” is recorded.
- the flag “1 lb” may be recorded if the tendency is different from the above.
- Volume difference value 152 is information indicating a difference value between the volume value of audio content indicated by the first audio frame and the volume value of audio content indicated by the last audio frame in one GOP. , For example, has a size of 8 bits. In particular, it is information indicating a difference value in a GOP corresponding to the VOBU 110 including the volume difference value 152 itself.
- the average volume value 153 is information indicating the average value of the volume values of the audio contents indicated by all the audio frames in one GOP, and has, for example, an 8-bit size. In particular, this is information indicating the average value in the GOP corresponding to the VOBU 110 including the volume average value 153 itself.
- Reserved area 154 is a preliminary recording area for recording various information indicating other characteristics of the audio content. For example, it may be configured to record various information indicating other characteristics such as sound quality, range, scale, sound source, timbre, phoneme, pitch, temperament, encoding method, and compression method.
- FIG. 5 is a table conceptually showing one specific example of various modes of the reproduction operation
- FIGS. 6 to 10 are graphs showing the reproduction sections reproduced based on the audio feature information. is there.
- the content data includes the audio feature information 150 shown in the graph of FIG. 4, the content data corresponding to the section B, the section E, and the section G in the graph of FIG. Plays back selectively.
- the reproducing operation will be described later in detail (see FIGS. 16 and 17).
- the fourth row of the table in FIG. 5 it is also possible to selectively reproduce a part of the content data which once swells and swells again. For example, it is possible to selectively reproduce a scene change portion and the like. In order to perform such reproduction, for example, it is only necessary to extract a part of the content data in which the volume tendency flag 151 initially shows a decreasing tendency and thereafter shows a tendency to increase. As a result, if the content data includes the audio feature information 150 shown in the graph of FIG. 4, as shown by the bold line in the graph of FIG. The content data corresponding to the section and the section G is selectively reproduced.
- the content data includes the audio feature information 150 shown in the graph of FIG. 4, as shown by the thick line in the graph of FIG. 9, a part of the section D, section E, section F and Content data corresponding to a part of the section G is selectively reproduced.
- the sixth row of the table in FIG. 5 it is also possible to selectively reproduce a part of the content data in which a sudden change occurs.
- a part of the content data whose volume difference value 152 is equal to or more than a certain threshold value may be extracted.
- the content data includes the audio feature amount information 150 shown in the graph of FIG. 4, for example, as shown by the thick line in the graph of FIG.
- the content data corresponding to section E is selectively played back. It is.
- the various audio feature amount information 150 (that is, the volume tendency flag 151, the volume difference value 152, and the volume Based on the average value 153), a wide variety of reproduction operations can be realized.
- the audio feature information 150 is recorded on the optical disk in advance, it is not necessary to analyze the reproduced content data in real time to extract the audio feature information 150. Therefore, it is possible to realize a variety of reproducing operations with a relatively low load.
- the information recording / reproducing apparatus described later can freely select a section to be reproduced based on the audio feature amount information 150, which does not specify a section to be selectively reproduced in advance. Have. For this reason, it is possible to realize a wider variety of playback operations as compared with predetermined playback operations (for example, a playback operation of a highlight scene or a playback operation of automatically cutting a CM portion). It has significant advantages.
- FIG. 11 is a data structure diagram conceptually showing a specific data structure of the information recording medium according to the present embodiment (particularly, a data structure including the video feature information 160). That is, in addition to or instead of the above-described volume tendency flag 151, volume difference value 152, volume average value 153, etc., information indicating a tendency of a change in the luminance value of the video content indicated by a video frame included in one GOP.
- a luminance tendency flag 161 which is information indicating a luminance value difference value between the video content of the first video frame and the video content of the last video frame in one GOP, and 1 It may be configured to have an information luminance average value 163 which is information indicating the average value of the luminance values of the video contents indicated by all the video frames in one GOP.
- the image feature amount information 160 indicating various information on chromaticity, lightness, hue, saturation, and the like, which is not limited to luminance, may be used.
- sub-picture content such as subtitles Alternatively, it may be configured to have feature amount information indicating features related to data, or one may be configured to have feature amount information indicating features related to various types of information included in other content data.
- FIG. 12 is a block diagram conceptually showing the basic configuration of the information recording / reproducing apparatus according to the present embodiment.
- the information recording / reproducing apparatus 300 includes a tuner 311, a video encoder 312, an audio encoder 313, a formatter 314, a video decoder 322, an audio decoder 323, and a demultiplexer 324.
- An ATA / ATAPI (AT Attachment Packet Interface) controller 330, a CPU 341, a RAM (Random Access Memory) 342, a ROM (Read Only Memory) 343, and operation buttons 350 are provided.
- the tuner 311 performs frequency tuning for receiving content data such as a broadcasted television program or movie program. In addition, it is configured to be able to select (or select) a TV program or movie program to be received. Then, the received content data is configured to be output to each of the video encoder 312 and the audio encoder 313! ⁇ In particular, it is configured to output data relating to video content among the received content data to the video encoder 312 and output data relating to audio content to the audio encoder 313.
- the video encoder 312 is configured to be able to encode data relating to video content output from the tuner 311. That is, it is configured to be able to generate a video stream (MPEG ES (Elementary Stream)). The generated video stream is output to the VOBU formatter 314.
- MPEG ES Simple Stream
- the audio encoder 313 converts the audio content output from the tuner 311 into audio content. Encoding the data related to the audio stream in a format such as Dolby Digital AC-3 (Audio Code 3), DTS (Digital Theater System), LPCM (Liner Pulse Code Modulation), PCM (Pulse Code Modulation), etc. It is configured to generate MPE G ES (Elementary Stream). The generated audio stream is output to VOBU formatter 314.
- the VOBU formatter 314 is configured to be able to format the video stream output from the video encoder 312 and the audio stream output from the audio encoder 313 into the VOB U110 format shown in FIG. That is, the GOP in the stream format is converted into the VO BU 110 format, and various information such as the RDI 121 can be added.
- the audio feature amount information 150 that is, the volume tendency flag 151, the volume difference value 152, the volume average value 153, and the like
- the video feature amount information 160 that is, the brightness A flag 161, a luminance difference value 162, a luminance average value 163, etc.
- the video decoder 321 is configured to be able to decode data (ie, a stream) related to video content output from the demultiplexer 323. Then, the decoded data is output to a video output terminal, and video (video) is displayed on various displays connected to the video output terminal.
- decode data ie, a stream
- video video
- the audio decoder 322 is configured to be able to decode data (that is, a stream) related to audio content output from the demultiplexer 323.
- the decoded data is output to an audio output terminal, and audio (sound) is output from various speakers connected to the audio output terminal.
- the demultiplexer 323 extracts a video pack or audio pack (and a sub-picture pack or the like) to be output from the MPEG-PS (program stream) format content data reproduced from the optical disc 100, 321 and audio decoder 322 can be output.
- MPEG-PS program stream
- the ATAZATAPI controller 330 corresponds to a specific example of “first recording means”, “second recording means” or “reproducing means” of the present invention, and records data on the optical disc 100 or Not shown for reproducing data recorded on 100! It is configured to be able to control recording or reproduction of various data on the optical disc 100 in particular.
- the ATAZATAPI controller 330 performs encryption and decryption of these various data in accordance with, for example, standards such as CPRM.
- the CPU 341 is configured to be able to control the operation of the entire information recording / reproducing device 300 (that is, various constituent elements surrounded by solid lines in FIG. 1). That is, the system controls the entire information recording / reproducing apparatus 1 by outputting a system command to each component included in the information recording / reproducing apparatus 1.
- the RAM 342 is configured to temporarily record various data necessary for the operation of the information recording / reproducing apparatus 300.
- the ROM 343 is configured to be able to record, for example, software for operating the CPU 341.
- the operation button 350 corresponds to a specific example of “setting means” of the present invention, and is configured to allow a user operation to be input from outside. It should be noted that various external input means such as a keyboard, a mouse, a touch panel, an operation panel, and a remote controller may be provided instead of or instead of the operation button 350.
- the tuner 311, the video encoder 312, the audio encoder 313, the VOBU formatter 314, and the ATAZATAPI controller 330 mainly constitute one of the "information recording device" of the present invention.
- a specific example is configured.
- a video decoder 321, an audio decoder 322, a demultiplexer 323 and an ATA / ATAPI controller 330 constitute one specific example of the "information reproducing apparatus" of the present invention.
- Fig. 13 5 is a flowchart conceptually explaining the flow of the entire recording operation of the information recording / reproducing device 1 according to the embodiment.
- the operation of the video encoder 311 is started under the control of the CPU 341 (step S101).
- the operation of the audio encoder 312 is started under the control of the CPU 341 (step S102).
- a video stream and an audio stream are generated from the content data such as various television programs and movie programs received by the tuner 311.
- the operation of the VOBU formatter 313 is started under the control of the CPU 341 (step S103).
- the video stream and the audio stream are formatted into the VOBU110 format (step S104). That is, a video pack is generated from video frames included in the video stream, and an audio pack is generated from audio frames included in the audio stream.
- step S105 it is determined whether or not a video frame constituting one GOP has been acquired. That is, it is determined whether one or a plurality of video packs constituting one VOBU 110 are generated from one or a plurality of video frames constituting one GOP.
- step S105 when it is determined that it has not been acquired (step S105: No), the process returns to step S104, and the formatting operation is continued again.
- step S 105 If it is determined that the GOP has been acquired (step S 105: Yes), under the control of the CPU 341 which is a specific example of “creation means” of the present invention, the 1 An audio feature information amount 150 related to an audio pack (audio content) included in one VO BU 110 is created (step S106). That is, based on the audio frames included in one GOP, the above-described volume tendency flag 151, volume difference value 152, volume average value 153, and the like are created.
- one VOBU 110 is configured including the audio feature information 150 created in step S106 (step S107). Then, the created VOBU 110 is recorded on the optical disc 100 by the operation of the ATA / ATAPI controller 330 (step S107).
- step S108 it is determined whether the recording operation is stopped or not. For example, it is determined whether or not the recording of all the television programs or the like received by the tuner 311 has been completed, or whether or not the user of the information recording / reproducing apparatus 300 has given an instruction to stop recording.
- step S108 If it is determined that the recording operation is not to be stopped (step S108: No), the process returns to step S104, and the recording operation is continued. Then, the recording operation of the VO BU 110 including the audio feature amount information 150 is continued until the recording operation of the received content data in the tuner 311 ends.
- Step S 108 if it is determined that the recording operation is to be stopped (Step S 108: Yes), the recording operation is terminated, and if necessary, the finalizing process is performed on the optical disc 100 or the ejecting process is performed. Good.
- the information recording / reproducing apparatus 300 it is possible to preferably record the audio feature amount information 150 on the optical disc 100.
- the configuration is such that the entire content data such as a television program is recorded.
- the configuration is such that a part of the content data is selectively recorded on the optical disc 100. May be.
- the user or the like may be configured to selectively record some content data having desired features on the optical disc 100. .
- the size of the content data recorded on the optical disc 100 can be reduced, and at least the desired content data is recorded on the optical disc 100, so that the user's request can be suitably satisfied.
- FIG. 14 is a flowchart conceptually showing the entire flow of the reproducing operation (No. 1) of the information recording / reproducing apparatus 300 according to the present embodiment
- FIG. 15 is a flowchart showing the reproducing operation (No. 1).
- 6 is a graph showing a playback section of content data to be reproduced.
- the reproduction operation (No. 1) is performed to selectively reproduce some of the content data, which is excited, that is, the volume is high! Fast forward data
- This is a reproduction operation for reproducing. In other words, it is a reproducing operation for selectively reproducing a part of the content data having the characteristic of “swelling up”.
- a VOB to be reproduced is accessed (step S201).
- the first VOBU 110 in the VOB is accessed to read various data recorded therein (step S202).
- the average volume value 153 is acquired by reading the RDI 121 included in the accessed VOBU 110 (!). Step S203).
- step S204 it is determined whether or not the average sound volume value 153 read in step S203 is larger (higher) than a predetermined threshold.
- a predetermined threshold value for example, experimental, empirical, mathematical or theoretical, simulation, or the like is used in accordance with the individual preference of the user who views the content data or the general preference of the audience. It is preferable to specify a more appropriate predetermined value individually and specifically.
- step S204 when it is determined that the VOBU 110 is larger than the threshold (step S204: Yes), the VOBU 110 including the volume average value 153 that is larger than the threshold (that is, the VOBU 110 is accessed in step S202 or step S208 described later) VOBU110) is reproduced (step S205). That is, the video and audio indicated by the video pack and audio pack included in the VOBU 110 are reproduced. Thereafter, the process proceeds to step S207.
- step S204 when it is determined that the VOBU 110 is not larger than the threshold (step S204: No), the VOBU 110 that is larger than the threshold and includes the volume average value 153 is played back fast forward (step S206). That is, the content data up to the VOBU 110 to be accessed next is played back fast-forward. More specifically, for example, fast forward playback may be performed by ensuring that only MPEG I-pictures are played back and other B-pictures and P-pictures are not played back.
- Step S 207 it is determined whether or not the reproduction operation is stopped. For example, it is determined whether the reproduction of all the television programs or the like recorded on the optical disc 100 has been completed or not, or whether the user of the information recording / reproducing apparatus 300 has instructed the reproduction to be stopped.
- step S207: No when it is determined that the reproduction operation is not stopped (step S207: No), subsequently, the next VOBU 110 (ie, the VOBU 110 or the VOBU reproduced in step S205) Accesses the VOBU 110 to be accessed next to the VOBU 110 that has been fast-forward reproduced in step S206, and reads various data recorded there (step S208). Thereafter, the operation of each of the above steps is repeated again for the VOBU 110 accessed in step S208. On the other hand, if it is determined that the reproduction operation is to be stopped (Step S207: Yes), the reproduction operation may be terminated, and the optical disc 100 may be ejected as necessary.
- Step S207: Yes the reproduction operation may be terminated, and the optical disc 100 may be ejected as necessary.
- the content data including the audio feature amount information 150 shown in the graph of FIG. 4 is to be played back in the playback operation (No. 1), it is indicated by the bold line in the graph of FIG.
- some content data in some sections are selectively reproduced. That is, the content data from the middle of the section B to the middle of the section D is reproduced, and the content data of the middle of the section G until the end of the section H is reproduced. This allows the user to view the exciting scene (highlight scene), and also allows the information recording / reproducing apparatus 300 to execute the reproducing operation for selecting the highlight scene with relatively low load. it can.
- FIG. 16 is a flowchart conceptually showing the flow of the entire reproduction operation (No. 2)
- FIG. 17 is a graph showing the reproduction section of the content data reproduced by the reproduction operation (No. 2). is there.
- the playback operation selectively plays back some of the content data that is about to swell (ie, the volume is increasing) and other content data. Is a playback operation for fast-forward playback. In other words, it is a reproduction operation for selectively reproducing a part of the content data having the characteristic of “just about to be excited”.
- the same operation as the above-described reproducing operation (No. 1) is assigned the same step number in the reproducing operation (No. 2), and the detailed description is omitted.
- a VOB to be reproduced is accessed (step S201).
- the first VOBU 110 in the VOB is accessed to read various data recorded therein (step S202). And in the playback operation (No. 2) Initialize the variable i. That is, i is set to "0" (step S301).
- the voice tendency flag 151 is acquired by reading the RDI 121 included in the accessed VOBU 110 (step S302). Thereafter, under the control of the CPU 341, it is determined whether or not the acquired voice tendency flag 151 is increasing (ie, “Olb” is indicated, and whether or not the force is present) (step S303).
- step S303: No if it is determined that the information does not indicate an increasing trend (not "Olb") (step S303: No), the variable i is initialized (step S306), The VOBU 110 including the volume tendency flag 151 indicating this increasing tendency is played back fast-forward (step S206). In other words, the content data up to the VOBU 110 to be accessed next is fast-forward reproduced. After that, it advances to step S207.
- step S303 when it is determined that the variable i indicates an increasing tendency (step S303: Yes), the variable i is incremented (step S304), and it is determined whether or not the variable i is larger than 5. Is performed (step S305).
- This step indicates that one volume tendency flag 151 is increasing, but merely indicates that it is increasing instantaneously. This is a step for realizing such a reproducing operation. As a result, when about 5 VOBUs 110 are all continuously increasing, it is determined for the first time that “the VOBU 110 is about to rise,” and the VOBUs 110 are actually reproduced.
- this numerical value of "5" is not limited to this, but to make it easier to determine that "it is about to swell", a small numerical value (for example, "4" or "3") is used. It is preferable to use it. On the other hand, it is preferable to use a large numerical value (for example, “6” or “7”) in order to make it difficult to judge that “it is about to swell right now”.
- step S305 when it is determined that it is not larger than 5 (step S305: No), the content data up to the VOBU 110 to be accessed next is fast-forward reproduced. (Step S206).
- step S205 one VOBUllO is reproduced (step S205).
- the VOBU 110 may be configured to play back the playback time axis in the past. In other words, by the time it is determined that it is greater than 5, Alternatively, it may be configured to reproduce five VOBUllOs each having a volume tendency flag 151 indicating that they are increasing.
- step S207: No when it is determined that the reproduction operation is not stopped (step S207: No), subsequently, the next VOBUlO (ie, the VOBUlO reproduced in step S205 or the fast forward in step S206)
- the VOBU 110 to be accessed next to the reproduced VOBU110 is accessed to read various data recorded therein (step S208). Thereafter, the operation of each of the above steps is repeated again for the VOBU110 accessed in step S208.
- step S207: Yes the reproduction operation may be terminated, and the optical disc 100 may be ejected as necessary.
- the content data including the audio feature information 150 shown in the graph of FIG. 4 is to be played back in the playback operation (No. 2), as shown by the thick line in the graph of FIG. , Some content data in some sections are selectively reproduced. That is, the content data of the sections B, E and G are reproduced. As a result, the user can view the scene that is about to swell, and the information recording / reproducing apparatus 300 can also execute a reproducing operation for selecting such a scene with relatively low load.
- i when i> 5, if the volume inclination flag 151 indicating the increasing tendency is not obtained (that is, step S303: No), i is initialized. However, instead of this, i may be configured to be decremented. As a result, when the volume tendency flag 151 tends to decrease momentarily, the reproducing operation can be continued as it is, and it is possible to realize a reproducing operation that leads to a smooth video power S.
- Fig. 18 is a graph showing the change in luminance of video content
- Fig. 19 is a flow chart conceptually showing the overall flow of the playback operation (No. 3). It is a chart.
- the playback operation (No. 3) is performed based on the audio feature information 150 relating to the audio content as in the above-described playback operation (No. 1) and playback operation (No. 2).
- This is a playback operation performed based on the video feature information 160 relating to the video content to be played. More specifically, it is a playback operation for automatically cutting CMs (commercials) and playing back content data.
- the same operation as the above-mentioned reproduction operation (No. 1) or reproduction operation (No. 2) is assigned the same step number in the reproduction operation (No. 3), and the detailed description is omitted. .
- the above-described luminance tendency flag 161, luminance difference value 162, and luminance average value 163 are used.
- the brightness tendency flag 161 changes before and after a certain VOBU 110
- the brightness difference value 162 of a certain VOBU 110 is relatively large
- the brightness average value 163 of a certain VOBU 110 is relatively small (that is, If so, it is considered that a fade-in or fade-out has occurred in the playback section including the VOBU 110.
- the playback section in which the fade-in or fade-out occurs may be seen in the actual movie. It is preferable to check the switching between the movie and the commercial based on the content. Then, it is preferable to determine the switching between the movie and the commercial from the combination of the two.
- a VOB to be reproduced is accessed (step S201).
- the first VOBU 110 in the VOB is accessed to read various data recorded therein (step S202).
- the mode of the information recording / reproducing device 300 is set to “reproducing mode” (step S401).
- the luminance inclination flag 161 is obtained from the RDI 121 in the VOBU 110 accessed in step S202 (step S402). Then, the acquired luminance tendency flag 161 is stored in the flag register (step S403). Thereafter, the VOBU 110 to be accessed next to the VOBU 110 accessed in step S202 is accessed (step S208). Then, the luminance tendency flag 161 is obtained from the RDI 121 of the VOBU 110.
- the luminance tendency flag 161 of the VOBU 110 accessed in step S208 is compared with the luminance tendency register 161 stored in the flag register, and it is determined whether or not the power is increased. Is performed (step S404).
- step S404 when it is determined that the value changes and is! / ⁇ , (step S404: No), the mode is switched from movie to CM or from CM to movie, and! /, Na! /, Is determined. That is, it is determined that it is not necessary to switch the mode of the information recording / reproducing apparatus 300 from “reproduction mode” to “fast-forward mode” or from “fast-forward mode” to “reproduction mode”. Then, it is determined whether or not the current mode of the information recording / reproducing apparatus 300 is the “reproducing mode” (step S408).
- step S408 if it is determined that the mode is the "play mode" (step S408: Yes), it is determined that the movie is currently being played, so that the playback is continued as it is.
- One VOBU 110 (specifically, the VOB U 110 accessed in step S208!) Is reproduced (step S205). Thereafter, the process proceeds to step S207.
- step S408 when it is determined that the playback mode is not the “playback mode” (that is, the mode is the “fast forward mode”) (step S408: No), the CM is currently fast forward played. Therefore, one VOBU110 (specific More specifically, the VOBU 110 accessed in step S208 is played back fast (step S206). In other words, the content data up to the VOBU 110 to be accessed next to the VOBU 110 accessed in step S208 is fast-forward reproduced.
- step S404 if it is determined that the value has changed! / (Step S404: Yes), then, under the control of the CPU 341, the luminance difference value 162 It is determined whether it is larger than N1 (step S405).
- N1 for example, experimentally, empirically, mathematically or theoretically, or using a simulation or the like to specify a more appropriate predetermined value individually or specifically in accordance with the characteristics of the content data. Is preferred.
- step S405 when it is determined that the value is not larger than the threshold value N1 (step S405: No), the mode is switched from the movie to the CM or from the CM to the movie, and it is determined to be! / ⁇ . . Then, the process proceeds to step S408, and the above-described steps are executed.
- step S405 determines whether it is smaller.
- the predetermined threshold N2 for example, experimentally, empirically, mathematically or theoretically, or a specific more appropriate predetermined value is specified by using a simulation or the like in accordance with the characteristics of the content data. Preferably.
- step S406 when it is determined that the threshold value is not smaller than the threshold value N2 (step S406: No), the mode is switched from movie to CM or from CM to movie, and it is determined to be! / !. . Then, the process proceeds to step S408, and the above-described steps are executed.
- step S406 when it is determined that the value is smaller than the threshold value N2 (step s406: Yes), it is determined that the movie has been switched to CM or CM to movie. That is, it is determined that it is necessary to switch the mode of the information recording / reproducing device 300 from “reproduction mode” to “fast-forward mode” or from “fast-forward mode” to “reproduction mode”. Then, it is determined whether or not the current mode of the information recording / reproducing device 300 is “reproducing mode” (step S407).
- step S407 it is determined that the mode is the "playback mode" (step (Step S407: Yes), it is determined that the movie is currently playing, so the mode of the information recording / reproducing device 300 that should cut and play back the CM included in the next VOBU 110 is set to “fast forward mode”. It is set (step S409). Then, one VOBU 110 (specifically, the VOBU 110 accessed in step S208! Is played back fast forward (step S206). That is, in step S208, the content data up to the VOBU 110 to be accessed next to the VOBU 110 accessed by!
- step S407 when it is determined that the mode is not the "playback mode" (step S407: No), it is determined that the CM is currently being fast-forward-reproduced, so that it is included in the next VOB U110.
- the mode of the information recording / reproducing apparatus 300 for reproducing a movie to be reproduced is set to “reproduction mode” (step S410). Then, one VOBU 110 (specifically, the VOBU 110 accessed in step S208! Is reproduced (step S206).
- Step S 207 it is determined whether or not a force for stopping the reproduction operation is present.
- step S207: No when it is determined that the reproduction operation is not to be stopped (step S207: No), the VOBU 110 reproduced at step S205 or! Then, the luminance tendency flag 161 included in the RDI 121 of the VOBU 110 that has been fast-forward reproduced is stored in the flag register (step S403). Then, the next VOBU 110 (that is, the VOBU 110 reproduced in step S205 or the VOBU 110 to be accessed next to the VOB U 110 fast-forward reproduced in step S206) is accessed, and the operations in the above steps are repeated again. On the other hand, if it is determined that the reproduction operation is to be stopped (step S207: Yes), the reproduction operation may be terminated, and the optical disc 100 may be ejected as necessary.
- One VOBU 110 includes content data having a reproduction time of about 0.5 second. Therefore, if the video feature amount information 160 in units of VOBUs 110, which is sufficiently shorter than the time during which the fade-in or fade-out is performed (approximately several seconds), is sufficient. It is possible to identify the playback section that fades in or out.
- the audio feature amount information 150 and the video feature amount information 160 are not recorded in advance on the optical disc 100, the audio feature amount information 150 and the video feature amount in real time in parallel with the reproduction operation. Information or information similar thereto may be obtained, and a part of content data having desired characteristics may be selectively reproduced as described above. Also according to this, it is possible to realize various reproduction operations. However, from the viewpoint of reducing the processing load of the information recording / reproducing device 300, it is preferable that the audio feature amount information 150 and the video feature amount information 160 be recorded on the optical disc 100 in advance.
- the conditions such as the audio tendency flag 151 included in the VOBU 110 desired to be reproduced can be input in detail.
- a configuration may be adopted in which a predetermined reproduction operation mode set in advance is displayed as a list, and the user selects a desired reproduction operation from the list.
- the mode of the reproducing operation may be automatically selected by the operation of the CPU 341 or the like, for example. For example, when a television program or the like containing a CM is reproduced, a reproduction operation for cutting a CM by default may be automatically selected by the operation of the CPU 341.
- the power of the optical disk 100 as an example of the information recording medium and the recorder of the optical disk 100 as an example of the information recording device are described below.
- the present invention is not limited to the optical disk and its recorder, but can be applied to other information recording media and recorders corresponding to other high-density recording or high transfer rates.
- the present invention is not limited to the above-described embodiments, and may be modified as appropriate without departing from the spirit or spirit of the readable invention.
- An information recording medium, an information recording device and method, an information reproducing device and method, and a computer program for recording control and reproduction control are also included in the technical scope of the present invention.
- the information recording medium, the information recording apparatus and method, the information reproducing apparatus and method, and the computer program according to the present invention can be used for, for example, a high-density optical disc such as a DVD, and further include a DVD recorder, a DVD player, and the like. It can be used for information recording and reproducing devices. Further, for example, the present invention can be used for an information recording / reproducing apparatus mounted on various consumer or business computer devices or connectable to various computer devices.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
Description
Claims
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| JP2006514836A JPWO2005125196A1 (ja) | 2004-06-22 | 2005-06-21 | 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 |
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| JP2004-183893 | 2004-06-22 | ||
| JP2004183893 | 2004-06-22 |
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| WO2005125196A1 true WO2005125196A1 (ja) | 2005-12-29 |
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| PCT/JP2005/011347 Ceased WO2005125196A1 (ja) | 2004-06-22 | 2005-06-21 | 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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010262723A (ja) * | 2009-05-11 | 2010-11-18 | Pioneer Electronic Corp | 再生装置、プレーヤー、再生装置の再生履歴情報記録方法、プレーヤーの再生履歴情報記録方法およびプログラム |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1169265A (ja) * | 1997-08-22 | 1999-03-09 | Hitachi Ltd | 圧縮データの属性格納方法 |
| JP2003087728A (ja) * | 2001-06-26 | 2003-03-20 | Pioneer Electronic Corp | 映像情報要約装置、映像情報要約方法および映像情報要約処理プログラム |
| JP2004120553A (ja) * | 2002-09-27 | 2004-04-15 | Clarion Co Ltd | 記録再生装置、記録装置、それらの制御方法、制御プログラム及び記録媒体 |
-
2005
- 2005-06-21 JP JP2006514836A patent/JPWO2005125196A1/ja active Pending
- 2005-06-21 WO PCT/JP2005/011347 patent/WO2005125196A1/ja not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1169265A (ja) * | 1997-08-22 | 1999-03-09 | Hitachi Ltd | 圧縮データの属性格納方法 |
| JP2003087728A (ja) * | 2001-06-26 | 2003-03-20 | Pioneer Electronic Corp | 映像情報要約装置、映像情報要約方法および映像情報要約処理プログラム |
| JP2004120553A (ja) * | 2002-09-27 | 2004-04-15 | Clarion Co Ltd | 記録再生装置、記録装置、それらの制御方法、制御プログラム及び記録媒体 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010262723A (ja) * | 2009-05-11 | 2010-11-18 | Pioneer Electronic Corp | 再生装置、プレーヤー、再生装置の再生履歴情報記録方法、プレーヤーの再生履歴情報記録方法およびプログラム |
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