WO2014208344A1 - 再生装置、再生方法、および記録媒体 - Google Patents
再生装置、再生方法、および記録媒体 Download PDFInfo
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- WO2014208344A1 WO2014208344A1 PCT/JP2014/065550 JP2014065550W WO2014208344A1 WO 2014208344 A1 WO2014208344 A1 WO 2014208344A1 JP 2014065550 W JP2014065550 W JP 2014065550W WO 2014208344 A1 WO2014208344 A1 WO 2014208344A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
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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
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/87—Regeneration of colour television signals
- H04N9/8707—Regeneration of colour television signals using a demodulator and a remodulator, e.g. for standard conversion
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
Definitions
- the present technology relates to a playback device, a playback method, and a recording medium, and more particularly, to a playback device, a playback method, and a recording medium that can display graphics with a wide luminance dynamic range with appropriate brightness.
- BD Blu-ray (registered trademark) Disc
- the master graphics has a dynamic range that is greater than the dynamic range that can be displayed on a standard luminance monitor. As a result of compression, the dynamic range of the master graphics is naturally lost.
- monitors that are brighter than the standard, such as 500 nit and 1000 nit, are on the market. There is a demand for graphics that makes use of the performance of a monitor having such a wide dynamic range.
- the present technology has been made in view of such a situation, and makes it possible to display graphics with a wide luminance dynamic range with appropriate brightness.
- the playback device includes extended graphics that is graphics of a wider second luminance range different from the first luminance range, HDR information indicating the luminance characteristics of the extended graphics, and Correspondence information associated with luminance conversion definition information used when performing luminance conversion from the extended graphics to standard graphics which is graphics in the first luminance range, the extended graphics, and the HDR information And a reading unit that reads the correspondence information, the extended graphics, the HDR information, and the luminance conversion definition information from the recording medium on which the luminance conversion definition information is recorded, and the correspondence information is associated with the extended graphics.
- the extended graphics is converted into the standard graphics based on the luminance conversion definition information.
- the conversion unit and the display device capable of displaying the extended graphics output the HDR information associated with the extended graphics in the extended graphics and the correspondence information, and display the extended graphics
- An output unit that outputs the standard graphics converted by the conversion unit to a display device that cannot be used.
- the reproduction method according to the first aspect of the present technology corresponds to the reproduction device according to the first aspect of the present technology.
- extended graphics that are graphics of a wider second luminance range different from the first luminance range, HDR information indicating the luminance characteristics of the extended graphics, and Correspondence information associated with brightness conversion definition information used when performing brightness conversion from extended graphics to standard graphics that is graphics in the first brightness range, the extended graphics, the HDR information, and The correspondence information, the extended graphics, the HDR information, and the luminance conversion definition information are read from the recording medium on which the luminance conversion definition information is recorded, and the correspondence information is associated with the extended graphics.
- the extended graphics is converted into the standard graphics, and the extended graphics
- the HDR information associated with the extended graphics in the extended graphics and the correspondence information is output, and the display device cannot display the extended graphics.
- the standard graphics are output.
- the recording medium includes extended graphics that is a graphic having a wider second luminance range different from the first luminance range, HDR information indicating the luminance characteristics of the extended graphics, and Correspondence information that associates brightness conversion definition information used when performing brightness conversion from the extended graphics to standard graphics that is graphics in the first brightness range; the extended graphics; A recording medium on which HDR information and the brightness conversion definition information are recorded, and in a playback device that plays back the recording medium, the correspondence information, the extended graphics, the HDR information, and the brightness conversion definition information are Based on the luminance conversion definition information read from the recording medium and associated with the extended graphics in the correspondence information, The extended graphics is converted into the standard graphics, and the HDR information associated with the extended graphics in the extended graphics and the correspondence information is output to a display device capable of displaying the extended graphics. A recording medium on which a process for outputting the converted standard graphics is performed on a display device that cannot display the extended graphics.
- extended graphics that are graphics of a wider second luminance range different from the first luminance range, HDR information indicating the luminance characteristics of the extended graphics, and Correspondence information that associates brightness conversion definition information used when performing brightness conversion from extended graphics to standard graphics that is graphics in the first brightness range, the extended graphics, and the HDR information And the luminance conversion definition information are recorded.
- the playback device includes standard graphics that are graphics in the first luminance range and extended graphics that are graphics in a wider second luminance range different from the first luminance range.
- Corresponding information that associates the HDR information indicating the luminance characteristics of the image and the luminance conversion definition information used when performing luminance conversion from the standard graphics to the extended graphics, the standard graphics, and the HDR information
- a reading unit that reads the correspondence information, the extended graphics, the HDR information, and the luminance conversion definition information from the recording medium on which the luminance conversion definition information is recorded, and the correspondence information is associated with the standard graphics
- the standard graphics is converted into the extended graphics based on the brightness conversion definition information.
- An output device including an output unit that outputs the standard graphics to a display device that cannot output and display the extended graphics.
- the reproduction method according to the third aspect of the present technology corresponds to the reproduction device according to the third aspect of the present technology.
- the luminance of standard graphics that is graphics of the first luminance range and extended graphics that is graphics of a wider second luminance range different from the first luminance range.
- Corresponding information that associates the HDR information indicating the characteristics of the image and the luminance conversion definition information used when performing luminance conversion from the standard graphics to the extended graphics, the standard graphics, the HDR information, and The correspondence information, the extended graphics, the HDR information, and the luminance conversion definition information are read from the recording medium on which the luminance conversion definition information is recorded, and the correspondence information is associated with the standard graphics.
- the standard graphics are converted to the extended graphics, and the extended graphics
- the converted extended graphics and the correspondence information are output with the HDR information associated with the standard graphics before conversion, and the expanded graphics are displayed.
- the standard graphics are output to a display device that cannot.
- the recording medium is a standard graphic that is a graphic of the first luminance range and an extended graphic that is a graphic of a wider second luminance range different from the first luminance range.
- HDR information indicating the characteristics of the brightness
- correspondence information that associates brightness conversion definition information used when performing brightness conversion from the standard graphics to the extended graphics, the standard graphics, and the A recording medium on which HDR information and the brightness conversion definition information are recorded, and in a playback device that plays back the recording medium, the correspondence information, the extended graphics, the HDR information, and the brightness conversion definition information are Based on the luminance conversion definition information read from the recording medium and associated with the standard graphics in the correspondence information,
- the standard graphics is converted into the extended graphics, and the converted extended graphics and the correspondence information are associated with the standard graphics before conversion for the display device capable of displaying the extended graphics.
- a recording medium on which processing for outputting the standard graphics is performed on a display device that outputs the HDR information and cannot display the extended graphics.
- the luminance of standard graphics that is graphics of the first luminance range and extended graphics that is graphics of a wider second luminance range different from the first luminance range.
- Corresponding information that associates the HDR information indicating the characteristics of the image, the luminance conversion definition information used when performing luminance conversion from the standard graphics to the extended graphics, the standard graphics, and the HDR information And the luminance conversion definition information are recorded.
- FIG. 41 is a block diagram illustrating a configuration example of a graphics decoding processing unit in FIG. 40. It is a flowchart explaining the recording process by 2nd Embodiment of a recording device. 43 is a flowchart for describing an encoding process in mode-i of FIG. 43 is a flowchart for describing an encoding process in mode-ii of FIG. 43 is a flowchart for describing Data Base information generation processing in FIG. 42. It is a flowchart explaining the reproduction
- FIG. 47 is a flowchart for describing decoding processing in mode-i of FIG. 46.
- 47 is a flowchart for describing details of a decoding process in mode-ii of FIG. 46. It is a figure which shows the structural example of the display set of PG stream and IG stream in 3rd Embodiment.
- FIG. 50 is a diagram illustrating an example of syntax of XPDS in FIG. 49.
- FIG. 50 is a diagram illustrating an example of TDS syntax in FIG. 49. It is a figure which shows the structural example of the encoding process part of 3rd Embodiment of the recording / reproducing system to which this technique is applied.
- FIG. 54 is a block diagram illustrating a configuration example of a graphics decoding processing unit in FIG. 53.
- Fig. 53 is a flowchart describing an encoding process in mode-i of the encoding processing unit in Fig. 52.
- Fig. 53 is a flowchart describing an encoding process in mode-ii of the encoding processing unit in Fig. 52. It is a flowchart explaining the Data Base information generation processing in the third embodiment. It is a flowchart explaining the decoding process in mode-i of the decoding process part of FIG.
- FIG. 68 is a block diagram illustrating a configuration example of an encoding processing unit in FIG. 67. It is a block diagram which shows the structural example of 4th Embodiment of the reproducing
- 68 is a flowchart for describing a recording process of the recording apparatus in FIG. 67.
- 70 is a flowchart for explaining a BDJ screen playback process of the playback device of FIG. 69. It is a block diagram which shows the structural example of a computer.
- FIG. 1 is a diagram illustrating a configuration example of a first embodiment of a recording / reproducing system to which the present technology is applied.
- the recording / reproducing system in FIG. 1 includes a recording device 1, a reproducing device 2, and a display device 3.
- the playback device 2 and the display device 3 are connected via an HDMI (registered trademark) (High Definition Multimedia Interface) cable 4.
- the playback device 2 and the display device 3 may be connected via a cable of another standard, or may be connected via wireless communication.
- Recording device 1 records content, and playback device 2 plays back the content.
- Content is provided from the recording device 1 to the playback device 2 using the optical disc 11.
- the optical disc 11 is a disc on which content is recorded, for example, in a BD-ROM (Blu-ray (registered trademark) Disc Read-Only) format.
- Recording content on the optical disc 11 may be performed in other formats such as BD-R and -RE.
- the provision of content from the recording device 1 to the playback device 2 may be performed using a removable medium other than the optical disk such as a memory card equipped with a flash memory, or may be performed by network distribution. .
- the recording device 1 is, for example, a device used by a content author. In the following description, it is assumed that the optical disc 11 on which content is recorded by the recording device 1 is provided to the playback device 2 as appropriate. However, in practice, the optical disc is copied based on the master disk on which the content is recorded by the recording device 1. Then, the optical disc 11 as one of them is provided to the playback device 2.
- HDR High Dynamic Range
- videos which are videos having a dynamic range greater than or equal to a dynamic range (luminance range) that can be displayed on a standard luminance monitor, are input to the recording apparatus 1.
- HDR graphics which is a graphic having a dynamic range that is larger than the dynamic range that can be displayed on a standard luminance monitor, is input to the recording apparatus 1.
- HDR data when it is not necessary to distinguish between HDR video and HDR graphics, they are collectively referred to as HDR data.
- the recording device 1 encodes the input master HDR data as it is, that is, with data having a dynamic range higher than the dynamic range that can be displayed on a monitor having a standard luminance, and records it on the optical disc 11 in the BD format.
- the optical disk 11 also records HDR information indicating the luminance characteristics of the master HDR data and low conversion information used when converting the HDR data into STD data.
- STD data is a general term for STD video (standard video) that is a dynamic range video that can be displayed on a monitor having standard luminance, and STD graphics that is a graphic of the dynamic range.
- standard video a dynamic range video that can be displayed on a monitor having standard luminance
- STD graphics that is a graphic of the dynamic range.
- the dynamic range of STD data is 0-100%
- the dynamic range of HDR data is expressed as a range from 0% to 101% or more, such as 0-500%, 0-1000%.
- the recording apparatus 1 converts the input master HDR data into STD data, that is, converts the data into a dynamic range that can be displayed on a monitor having a standard luminance, and encodes the data. To record.
- the HDR information and high conversion information used when converting STD data into HDR data are also recorded on the optical disc 11.
- the HDR video recorded by the recording device 1 or the STD video obtained by converting the HDR video is, for example, a so-called 4K resolution video having horizontal and vertical resolutions of 4096 ⁇ 2160, 3840 ⁇ 2160 pixels, and the like.
- a video encoding method for example, a HEVC (High Efficiency Video Video Coding) method is used.
- the HDR information and the low conversion information or the high conversion information are set and recorded in the SEI of the video stream that is the video HEVC stream.
- a subtitle encoding method there is a run length method.
- the playback device 2 communicates with the display device 3 via the HDMI cable 4 and acquires information regarding the display performance of the display device 3.
- the playback device 2 specifies whether the display device 3 is a device having an HDR monitor that is a monitor capable of displaying HDR data or a device having an STD monitor that is a monitor capable of only displaying STD data.
- the playback device 2 drives the drive to read and decode the video stream recorded on the optical disc 11 and the graphics stream that is a graphics encoded stream.
- the playback device 2 when the data obtained by decoding is HDR data and the display device 3 has an HDR monitor, the playback device 2 outputs the HDR data obtained by decoding to the display device 3. In this case, the playback device 2 outputs the HDR information to the display device 3 together with the HDR data.
- the playback device 2 converts the HDR data obtained by decoding into STD data and outputs STD data. . Conversion of HDR data to STD data is performed using low conversion information recorded on the optical disc 11.
- the playback device 2 converts the STD data obtained by decoding into HDR data, and converts the HDR data to the display device 3. Output.
- the conversion of the STD data into the HDR data is performed using the high conversion information recorded on the optical disc 11.
- the playback device 2 outputs the HDR information to the display device 3 together with the HDR data.
- the playback device 2 outputs the STD data obtained by decoding to the display device 3.
- the display device 3 receives the STD data or HDR data transmitted from the playback device 2, and displays a video on the monitor based on the STD data or HDR data.
- the display device 3 recognizes that the data transmitted from the playback device 2 together with the HDR information is the HDR data. As described above, HDR information is transmitted together with the HDR data to the display device 3 having the HDR monitor.
- the display device 3 displays the video of the HDR data according to the characteristics specified by the HDR information. That is, the display device 3 is a monitor in which the monitor itself has a dynamic range of 0-500%, and the HDR information specifies that the dynamic range of the HDR data has a predetermined characteristic of 0-500%. According to the predetermined characteristic, the brightness is adjusted in the range of 0-500% and the image is displayed.
- the content author By enabling the specification of the brightness characteristics of the master HDR data, the content author (Author) can display the image with the intended brightness.
- a display device such as a TV recognizes data input from the outside as data having a dynamic range of 0-100%. Further, when the monitor of the display device has a wider dynamic range, the display device expands the luminance itself according to the characteristics of the monitor and displays the video. By designating the luminance characteristic and adjusting the luminance of the HDR data according to the designated characteristic, it is possible to prevent the luminance adjustment unintended by the author from being performed on the display device side.
- the display device 3 recognizes that the data transmitted from the reproduction device 2 is STD data, and displays the video of the STD data.
- the fact that the STD data is transmitted from the playback device 2 means that the display device 3 is a device having an STD monitor.
- the audio data is also transmitted from the reproducing device 2.
- the display device 3 outputs sound from the speaker based on the audio data transmitted from the playback device 2.
- mode-ii The mode in which the master HDR data is converted to STD data and recorded on the optical disc 11 is referred to as mode-ii.
- mode-ii HDR information and high conversion information are recorded on the optical disc 11.
- the process on the left side indicated by the solid line L1 indicates the encoding process performed in the recording apparatus 1, and the process on the right side indicated by the solid line L2 indicates the decoding process performed in the reproduction apparatus 2.
- the recording apparatus 1 detects the brightness of the master HDR data and generates HDR information as indicated by the tip of arrow # 1. Further, the recording device 1 generates encoded data by encoding the master HDR video by the HEVC method as indicated by the tip of arrow # 2-1, and generates the master data as indicated by the tip of arrow # 2-2. A graphics stream is generated by encoding the HDR graphics.
- Recording device 1 converts the master HDR data into STD data, as indicated by the tip of arrow # 3.
- the video of the STD data obtained by the conversion is displayed on a monitor (not shown).
- the conversion of the HDR data into the STD data is appropriately performed while the author visually confirms the video of the converted STD data and adjusts the conversion parameters.
- the tone mapping definition information is information that defines the correspondence between each luminance value in the dynamic range such as 0-400%, which is wider than the standard dynamic range, and each luminance value in the dynamic range of 0-100%, which is the standard dynamic range. It is.
- HDR information of HDR video and HDR graphics and tone mapping definition information for HDR-STD conversion are provided to the playback device 2 in a form of being inserted into the video stream using SEI.
- the playback device 2 reads the graphics stream from the optical disc 11 and decodes the graphics stream to generate HDR graphics as indicated by the tip of arrow # 20.
- the playback device 2 performs decoding using tone mapping definition information for HDR-STD conversion extracted from the video stream, as indicated by the tip of arrow # 26.
- the obtained HDR data is converted into STD data.
- the playback device 2 outputs the STD data obtained by the conversion to the display device 3 as indicated by the tip of arrow # 27.
- the HDR data obtained by decoding is output to the display device 3 having the HDR monitor together with the HDR information. Further, the HDR data obtained by decoding is output to the display device 3 having the STD monitor after being converted into STD data.
- the recording apparatus 1 detects the brightness of the master HDR data and generates HDR information as indicated by the tip of arrow # 71.
- the recording apparatus 1 encodes the STD video obtained by converting the master HDR video by the HEVC method to generate encoded data. Further, as indicated by the tip of arrow # 74-2, the STD graphics obtained by converting the master HDR graphics are encoded to generate a graphics stream.
- the recording device 1 inserts HDR information and tone mapping definition information into the encoded data as SEI, as shown at the tip of arrow # 75, and generates a video stream.
- the recording device 1 records the generated video stream and graphics stream in the BD format on the optical disc 11 and provides them to the playback device 2 as indicated by arrow # 91.
- the playback device 2 reads the video stream from the optical disc 11, and extracts the HDR information and tone mapping definition information from the SEI of the video stream, as indicated by arrows # 101 and # 102.
- the playback device 2 decodes the encoded data included in the video stream using the HEVC method to generate STD video, and as indicated by the tip of arrow # 103-2.
- STD graphics is generated by decoding the graphics stream.
- the playback device 2 outputs the STD data obtained by decoding to the display device 3 as indicated by the tip of arrow # 104.
- the STD data obtained by decoding is output to the display device 3 having the HDR monitor together with the HDR information after being converted into the HDR data. Further, the STD data obtained by decoding is output as it is to the display device 3 having the STD monitor.
- the master HDR data is converted into STD data, as indicated by the white arrow # 121, and then the HDR information generated in the recording device 1 based on the master HDR data and the tone for STD-HDR conversion. It is provided to the playback device 2 together with the mapping definition information.
- STD data obtained by decoding uses tone mapping definition information for STD-HDR conversion, as indicated by the tips of arrows # 122 and # 123. Converted to HDR data. Also, as indicated by the tip of arrows # 124 and # 125, the HDR information is added to the HDR data obtained by converting the STD data, and is output to the display device 3 as indicated by the tip of arrow # 126.
- the playback device 2 outputs the STD data obtained by decoding to the display device 3 as indicated by the tip of arrow # 127.
- the master HDR data is converted into STD data and recorded on the optical disc 11.
- the display device 3 serving as an output destination, it is possible to switch between decoding the STD data obtained by decoding into HDR data, adding the HDR information, and outputting the STD data as it is. .
- FIG. 6 is a diagram illustrating a configuration of an access unit in the HEVC scheme.
- the video stream is composed of access units that are a collection of NAL (Network Abstraction Layer) units.
- One access unit includes one picture of video data.
- one access unit includes AU delimiter (Access Unit delimiter), VPS (Video Parameter Set), SPS (Sequence Parameter Set), PPS (Picture Parameter Set), SEI, VCL (Video Coding Layer) , EOS (End of Sequence), and EOS (End of Stream).
- AU delimiter Access Unit delimiter
- VPS Video Parameter Set
- SPS Sequence Parameter Set
- PPS Picture Parameter Set
- SEI Supplemental Coding Layer
- VCL Video Coding Layer
- EOS End of Sequence
- EOS End of Stream
- VPS includes metadata representing the contents of the bitstream.
- the SPS includes information that the HEVC decoder needs to refer to through a sequence decoding process, such as a picture size and a CTB (Coding Tree Block) size.
- the PPS includes information that the HEVC decoder needs to refer to in order to execute a picture decoding process.
- VPS, SPS, and PPS are used as header information.
- SEI is auxiliary information including timing information of each picture and information on random access.
- HDR information and tone mapping definition information are included in tone_mapping_info which is one of SEI.
- Identification information for identifying tone_mapping_info is assigned to tone_mapping_info.
- tone_mapping_info # i is referred to as tone_mapping_info # i.
- tone_mapping_info the brightness and color of the video obtained by decoding are converted according to the performance of the monitor that is the output destination of the video. Note that the line numbers and colons (:) on the left side of FIG. 7 are shown for convenience of explanation, and are not included in the syntax. This also applies to FIGS. 16 to 18 and FIG. 20, FIG. 37, FIG. 38, FIG. 50, and FIG. Main information included in tone_mapping_info will be described.
- the tone_map_id on the second line is identification information of tone_mapping_info.
- the tone_map_model_id on the 8th line represents the model of tone map used for conversion.
- tone_mapping_info in which any value of 0, 2, and 3 is set as tone_map_model_id and tone_mapping_info in which a value of 4 is set as tone_map_model_id are generated at least one by one.
- tone_mapping_info in which one of 0, 2, and 3 is set as tone_map_model_id is used as tone-mapping definition information for HDR-STD conversion or STD-HDR conversion.
- Information included in tone_mapping_info in which a value of 4 is set as tone_map_model_id is used as HDR information.
- the horizontal axis indicates coded_data (RGB value before conversion), and the vertical axis indicates target_data (RGB value after conversion).
- RGB values equal to or less than D1 are converted into RGB values indicated by min_value as indicated by white arrow # 151.
- RGB values greater than or equal to D2 are converted into RGB values indicated by max_value, as indicated by white arrow # 152.
- tone_map_model_id 2
- start_of_coded_interval [i] having the same number as max_target_data representing the step function is described.
- the number of bits of start_of_coded_interval [i] may be a variable value determined by coded_data_bit_depth on the sixth line, or may be a fixed value (256 bits). In the case of variable values, the number of bits can be reduced compared to the case of fixed values.
- tone_map_model_id 3
- the number of coded_pivot_value [i] and target_pivot_value [i] specified by num_pivots representing a line function are described.
- the number of bits of coded_pivot_value [i] and target_pivot_value [i] may be a variable value determined by coded_data_bit_depth on the sixth line, or may be a fixed value (256 bits). In the case of variable values, the number of bits can be reduced compared to the case of fixed values.
- tone_mapping_info in which any value of 0, 2, 3 is set as tone_map_model_id is used as tone mapping definition information for STD-HDR conversion or HDR-STD conversion, and from recording device 1 to playback device 2 Is transmitted.
- tone_map_model_id 4
- ref_screen_luminance_white 4
- extended_range_white_level 4
- nominal_black_level_code_value 2
- nominal_white_level_code_value 3
- extended_white_level_code_value 3
- ref_screen_luminance_white indicates the brightness (cd / m 2 ) of the standard monitor.
- extended_range_white_level indicates the brightness of the extended dynamic range. In the example of FIG. 12, 400 is set as the value of extended_range_white_level.
- Nominal_black_level_code_value indicates a luminance value of black (brightness 0%)
- nominal_white_level_code_value indicates a luminance value of white (brightness 100%) in a standard luminance monitor.
- extended_white_level_code_value indicates the luminance value of white in the extended dynamic range.
- the dynamic range of 0-100% is expanded to the dynamic range of 0-400% according to the value of extended_range_white_level. Also, a luminance value corresponding to 400% brightness is specified by extended_white_level_code_value.
- the luminance characteristics of the HDR data are characteristics indicated by a curve L12 in which the values of nominal_black_level_code_value, nominal_white_level_code_value, and extended_white_level_code_value are 0%, 100%, and 400%, respectively.
- tone_mapping_info in which a value of 4 is set as tone_map_model_id indicates the luminance characteristics of the master HDR data and is transmitted from the recording device 1 to the playback device 2.
- FIG. 13 is a diagram illustrating an example of an AV stream management structure in the BD-ROM format.
- AV streams including video streams is performed using two layers, PlayList and Clip.
- the AV stream may be recorded not only on the optical disc 11 but also on the local storage of the playback device 2.
- One AV stream and Clip Information which is information accompanying it are managed as one object.
- a pair of AV stream and ClipCInformation is called Clip.
- the AV stream is developed on the time axis, and the access point of each Clip is mainly designated in the PlayList with a time stamp. Clip Information is used to find the address where decoding in the AV stream should start.
- PlayList is a collection of AV stream playback sections.
- One playback section in the AV stream is called PlayItem.
- PlayItem is represented by a pair of IN point and OUT point of the playback section on the time axis. As shown in FIG. 13, the PlayList is composed of one or a plurality of PlayItems.
- the second PlayList from the left is composed of one PlayItem, so that the entire AV stream included in the right Clip is referenced.
- the third PlayList from the left is made up of two PlayItems, and the two PlayItems refer to a part of the AV stream included in the left Clip and a part of the AV stream included in the right Clip, respectively.
- FIG. 15 is a diagram illustrating an example of a management structure of files recorded on the optical disc 11.
- Index file for example, a list of title numbers recorded on the optical disc 11 and the types and numbers of objects executed corresponding to the title numbers are described.
- objects There are two types of objects: movie objects (MovieObject) and BDJ objects (BDJBDObject).
- the PLAYLIST directory stores a PlayList file that describes the PlayList.
- Each PlayList file has a name that is a combination of a 5-digit number and an extension “.mpls”.
- a single PlayList file shown in FIG. 15 has a file name “00000.mpls”.
- the clip information file in which the same 5-digit number is set as the file name and the stream file constitute a single clip.
- the “00001.m2ts” stream file is played, the “00001.clpi” ClipCInformation file is used, and when the “00002.m2ts” stream file is played, the “00002.clpi” Clip Information file is used.
- FIG. 16 is a diagram illustrating the STN_table syntax of the PlayItem of the PlayList file.
- Video Block that is information relating to encoding of a video stream
- Audio Block that is information relating to encoding of an audio stream
- Graphics Block a code of a graphics stream
- Video Block] in A of FIG. 18 is information relating to the encoding of the video stream described in the Stream Coding Info of Clip Information used for playback of the video stream.
- the video_format on the fifth line indicates the video scanning method.
- Clip Information includes a flag indicating whether or not an AV stream to be reproduced using the Clip Information is a stream having the master as HDR data, and a flag indicating the recording mode of the AV stream. .
- [Graphics Block] in B of FIG. 18 is information relating to encoding of the graphics stream described in StreamCodingInfo of Clip ⁇ Information used for reproduction of the graphics stream.
- [Graphics Block] includes PG_language_code representing the language code of the PG stream.
- [Graphics Block] when the graphics stream is a PG stream, [Graphics Block] includes number_of_tone_mapping_info_ref representing the number of tone_mapping_info included in the PG stream and tone_mapping_info_ref representing the tone_map_id of the tone_mapping_info. included.
- FIG. 20 is a diagram illustrating the syntax of XPDS.
- color_depth is described in DSS (Dialog Style Style Segment) in the Text-ST stream.
- FIG. 21 is a block diagram illustrating a configuration example of the recording apparatus 1.
- the Data Base information generation unit 21A also describes the number of tone_mapping_info of the graphics stream supplied from the encoding processing unit 22 as number_of_tone_mapping_info_ref of the graphics stream of PlayList and describes tone_map_id as tone_mapping_info_ref.
- the HDR information generation unit 31 detects the luminance of the input master HDR data and generates HDR information including each information described with reference to FIG.
- the HDR information generation unit 31 outputs the generated HDR information to the stream generation unit 36.
- the HEVC encoder 32 When the recording mode is mode-i, the HEVC encoder 32 encodes the input master HDR video in the HEVC format. In addition, when the recording mode is mode-ii, the HEVC encoder 32 encodes the STD video supplied from the HDR-STD conversion unit 33 using the HEVC method. The HEVC encoder 32 outputs the HDR video encoded data or the STD video encoded data to the stream generation unit 36.
- the HDR-STD conversion unit 33 outputs to the definition information generation unit 34 information indicating the correspondence between the RGB signal of the HDR data that is input data and the RGB signal of the STD data that is output data.
- the information output to the definition information generation unit 34 is used to generate tone mapping definition information as indicated by the tip of arrow # 202.
- the HDR-STD conversion unit 33 converts the RGB signal of the STD data into a YCrCb signal and outputs it as indicated by the tip of arrow # 203.
- FIG. 24 is a diagram illustrating an example of tone mapping.
- tone_mapping_info including the number of coded_pivot_value [i] and target_pivot_value [i] specified by num_pivots in FIG. 11 into tone mapping definition information for HDR-STD conversion.
- the stream generation unit 36 sets the number of tone_mapping_info including the HDR information of the video stream supplied from the HDR information generation unit 31 and the number of tone_mapping_info that is tone mapping definition information of the video stream supplied from the definition information generation unit 34 in FIG. This is supplied to the controller 21. Further, the stream generation unit 36 supplies tone_map_id of those tone_mapping_info to the controller 21.
- the playback device 2 includes a controller 51, a disk drive 52, a memory 53, a local storage 54, a network interface 55, a decryption processing unit 56, an operation input unit 57, and an HDMI communication unit 58.
- the controller 51 includes a CPU, a ROM, a RAM, and the like.
- the controller 51 executes a predetermined program and controls the overall operation of the playback device 2. For example, the controller 51 supplies the video stream described in the PlayList supplied from the disk drive 52 and tone_mapping_info_ref of the graphics stream to the decoding processing unit 56.
- the network interface 55 communicates with a server via a network such as the Internet, and supplies data downloaded from the server to the local storage 54.
- the operation input unit 57 includes input devices such as buttons, keys, and a touch panel, and a receiving unit that receives signals such as infrared rays transmitted from a predetermined remote commander.
- the operation input unit 57 detects a user operation and supplies a signal representing the content of the detected operation to the controller 51.
- the tone conversion unit 81 reads tone_mapping_info describing tone_mapping_info_ref as tone_map_id from the tone map holding unit 80 based on tone_mapping_info_ref of the graphics stream supplied from the controller 51.
- the controller 101 stores and manages EDID (Extended display identification data) representing the performance of the monitor 104 in the memory 101A.
- EDID Extended display identification data
- the controller 101 outputs the EDID stored in the memory 101 ⁇ / b> A to the HDMI communication unit 102 and causes the playback apparatus 2 to transmit the EDID.
- the playback device 2 specifies the performance of the monitor 104 of the display device 3.
- the video stream, graphics stream, and Data Base information generated by the above processing are recorded on the optical disc 11.
- step S70 the controller 51 determines whether or not the reproduction is finished.
- step S83 the graphics decoding processing unit 56B decodes the graphics stream.
- the YD, Cr, and Cb values of STD graphics obtained as a result of decoding are supplied to the tone converter 81.
- step S89 If it is determined in step S89 that the reproduction has not ended, the controller 51 returns to step S81 and repeats the above processing. If it is determined in step S89 that the reproduction has ended, the process returns to step S45 in FIG. 32, and the subsequent processing is performed.
- the dynamic range of HDR data specified by the HDR information is 0-400%
- the dynamic range is 0-500% of the monitor 104 (for example, the brightness of 100% and 100cd / m 2 500cd / m 2 ) If it is, it is determined that the HDR data can be displayed as it is.
- the dynamic range of the HDR data specified by the HDR information is 0-400% and the dynamic range of the monitor 104 is 0-300%, it is determined that the HDR data cannot be displayed as it is.
- step S104 the signal processing unit 103 adjusts the luminance according to the display performance of the monitor 104, and the HDR data of which the luminance has been adjusted. Display video. For example, when the luminance characteristic indicated by the curve L12 in FIG. 12 is specified by the HDR information and the dynamic range of the monitor 104 is 0-300%, each luminance value represents brightness in the range of 0-300%. So that it is compressed.
- the video decoding processing unit 131A extracts the Tone_map stream from the streams read and supplied by the disk drive 52. Based on tone_mapping_info_ref of the video stream supplied from the controller 51, the video decoding processing unit 131A extracts tone_mapping_info of the video stream from the Tone_map stream.
- the graphics decoding processing unit 131 ⁇ / b> B extracts tone_mapping_info of the graphics stream from the Tone_map stream based on the tone_mapping_info_ref of the graphics stream supplied from the controller 51.
- the graphics decoding processing unit 131B converts the HDR graphics or STD graphics obtained as a result of decoding into STD graphics or HDR graphics with reference to tone mapping definition information that is extracted tone_mapping_info as necessary. And output to the HDMI communication unit 58.
- the graphics decoding processing unit 131 ⁇ / b> B outputs the HDR information included in the extracted tone_mapping_info to the HDMI communication unit 58 together with the HDR graphics.
- step S111 If it is determined in step S111 that the recording mode is mode-i, the encoding processing unit 22 performs the encoding process in mode-i in step S112.
- the video stream, graphics stream, and Tone_map stream generated by the encoding process in mode-i are supplied to the disk drive 23.
- step S113 the encoding processing unit 22 performs the encoding process in mode-ii.
- the video stream, graphics stream, and Tone_map stream generated by the encoding process in mode-ii are supplied to the disk drive 23.
- the stream generation unit 121 supplies the controller 21 with tone_mapping_info including the HDR information of the video stream, the number of tone_mapping_info that is tone mapping definition information, and tone_map_id of those tone_mapping_info. Furthermore, the stream generation unit 121 supplies tone_mapping_info including the HDR information of the graphics stream, the number of tone_mapping_info that is tone mapping definition information, and tone_map_id of the tone_mapping_info to the controller 21.
- the Data Base information generation unit 21A describes the number of tone_mapping_info included in the Tone_map stream supplied from the encoding processing unit 22 in [ToneMap Block] of Clip Information as number_of_tone_mapping_info_ref. Further, the Data ⁇ Base information generation unit 21A describes tone_map_id of tone_mapping_info included in the Tone_map stream supplied from the encoding processing unit 22 in [ToneMap [Block] of Clip Information as tone_mapping_info_ref. Note that this Clip Information includes HDR_flag and mode_flag.
- step S174 the decoding processing unit 131 performs a decoding process in mode-i. Details of the decoding process in mode-i will be described with reference to FIG. 47 described later.
- FIG. 48 is a flowchart for explaining the details of the decoding process in mode-ii in step S175 of FIG.
- a TDS (Tone_mapping_info Definition Segment), which is a segment describing tone_mapping_info of subtitles for one screen, is prepared as a display set segment of the PG stream. Further, as shown in B of FIG. 49, a TDS that is a segment describing tone_mapping_info of menu buttons for one screen is prepared as a segment of the display set of the IG stream.
- Encoder 162 inserts TDS into a graphics stream of HDR graphics or STD graphics and outputs it to stream generation unit 163. In addition, the encoder 162 supplies the number of tone_mapping_info of the graphics stream and tone_map_id to the controller 21.
- number_of_tone_mapping_info included in [Graphics Block] can recognize whether tone_mapping_info is included in the graphics stream before the graphics stream is played back. Therefore, only when the composition buffer 181 recognizes that tone_mapping_info is included in the graphics stream, the composition buffer 181 ensures the capacity assumed as the capacity of the tone_mapping_info as the storage capacity. Thereby, it is possible to prevent the storage capacity of the composition buffer 181 from being unnecessarily secured.
- the tone converter 184 outputs HDR information, STD graphics, or HDR graphics to the HDMI communication unit 58, similarly to the tone converter 81.
- the Data Base information generation unit 21A describes the number of tone_mapping_info of the graphics stream supplied from the encoding processing unit 22 in [Graphics Block] of Clip Information as number_of_tone_mapping_info_ref. Further, the Data Base information generation unit 21A describes tone_map_id of tone_mapping_info of the graphics stream supplied from the encoding processing unit 22 as tone_mapping_info_ref in [Graphics [Block] of Clip Information. Note that this Clip Information includes HDR_flag and mode_flag.
- step S284 the graphics decoding processing unit 171B decodes the ODS of the graphics stream and generates Y, Cr, and Cb values of the HDR graphics.
- the Y, Cr, and Cb values of the HDR graphics are supplied to the tone converter 184.
- the video decoding processing unit 171A includes tone_mapping_info_ref of the video stream described in the PlayList supplied from the controller 51 as tone_map_id, and extracted tone_mapping_info including tone_mapping_info including HDR information and tone_mapping_info including tone mapping definition information. Select from. Further, the tone conversion unit 184 includes tone_mapping_info_ref supplied from the graphics controller 182 as tone_map_id, and selects tone_mapping_info including HDR information and tone_mapping_info which is tone mapping definition information from tone_mapping_info held in the tone map holding unit 183 And read.
- steps S307 to S310 Since the processing of steps S307 to S310 is the same as the processing of steps S86 to S89 in FIG. 34, description thereof is omitted.
- tone_mapping_info is used when playing a screen generated by a BDJ object.
- FIG. 63 is a diagram for describing tone_mapping_info when video is stopped in the fourth embodiment to which the present technology is applied.
- tone_mapping_info # 1 and tone_mapping_info # 2 are held in the BDJ screen memory 192 that is a memory for the BDJ screen in the playback device 2 in accordance with the command. Then, tone_mapping_info # 1 and tone_mapping_info # 2 are used when the BDJ screen to be played back is played back.
- the 67 includes a controller 201, an encoding processing unit 202, and a disk drive 203.
- the master HDR video is input to the encoding processing unit 202.
- the Data Base information generation unit 201A describes the number of tone_mapping_info inserted in the video stream supplied from the encoding processing unit 202 in the number_of_tone_mapping_info_ref of [Video Block] of Clip Information, and describes tone_map_id as tone_mapping_info_ref.
- the Data Base information generation unit 201 ⁇ / b> A generates PlayList and Clip Information that are Data Base information by describing various types of information as described above, and outputs them to the disk drive 203.
- the BDJ object generation unit 201B generates a BDJ object that describes a playback command for playing back an AV stream according to a BDJ screen or a playlist.
- the BDJ object generation unit 201 ⁇ / b> B generates tone ⁇ mapping definition information and HDR information of the BDJ screen at the time of video playback as necessary, and supplies the generated information to the encoding processing unit 202.
- the BDJ object generation unit 201B acquires tone_map_id of tone_mapping_info of the BDJ screen supplied from the encoding processing unit 202 during video playback.
- the BDJ object generation unit 201B further describes the command specifying the acquired tone_map_id in the BDJ object as described with reference to FIG.
- the BDJ object generation unit 201B generates tone_mapping_info including tone_mapping_info and HDR information, which are tone mapping definition information of the BDJ screen when the video is stopped.
- the BDJ object generation unit 201B further describes a command for generating tone_mapping_info of the BDJ screen when the video is stopped and a command for specifying tone_map_id of the tone_mapping_info in the BDJ object as described with reference to FIG.
- the BDJ object generation unit 201B outputs the BDJ object to the disk drive 203.
- the HDR-STD conversion unit 212 converts the input master HDR video into STD video.
- the conversion by the HDR-STD conversion unit 212 is appropriately performed according to the conversion parameter input by the author.
- the HDR-STD conversion unit 212 outputs information indicating a correspondence relationship between input data and output data, where the input RGB data of the HDR video is input data and the output RGB data of the STD video is output data, to the definition information generation unit 34.
- FIG. 69 is a block diagram illustrating a configuration example of the fourth embodiment of the playback device 2 to which the present technology is applied.
- the BDJ object execution unit 221A when the video is stopped, the BDJ object execution unit 221A generates tone_mapping_info of the BDJ screen according to the command, supplies it to the memory 223, and stores it in the BDJ memory 191. Also, the BDJ object execution unit 221A selects tone_mapping_info of tone_map_id from tone_mapping_info held in the memory 223 based on tone_map_id of tone_mapping_info of the playback target BDJ screen specified by the command, and stores it in the BDJ screen memory 192. Hold.
- FIG. 71 is a flowchart for explaining the playback processing of the BDJ screen of the playback device 2 of FIG.
- Embodiments of the present technology are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present technology.
- HDR_flag and mode_flag may be set independently for video and graphics. Moreover, HDR_flag and mode_flag do not need to be recorded on the optical disk 11 when fixed beforehand.
- the playback device 2 does not have to transmit the HDR information to the display device 3 even when transmitting the HDR data to the display device 3.
- the playback device 2 may be configured by a mobile terminal.
- HDR information indicating luminance characteristics of standard graphics that is graphics of a first luminance range and extended graphics that are graphics of a wider second luminance range different from the first luminance range; and Correspondence information that associates luminance conversion definition information used when performing luminance conversion from standard graphics to the extended graphics;
- a recording medium on which processing for outputting the standard graphics is performed for a display device that cannot display.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
(記録・再生システムの第1実施の形態の構成例)
図1は、本技術を適用した記録・再生システムの第1実施の形態の構成例を示す図である。
図2は、mode-iにおける信号処理の例を示す図である。
図4は、mode-iiにおける信号処理の例を示す図である。
図6は、HEVC方式におけるアクセスユニットの構成を示す図である。
図7は、tone_mapping_infoのシンタクスを示す図である。
図13は、BD-ROMフォーマットにおけるAVストリームの管理構造の例を示す図である。
図14は、Main PathとSub Pathの構造を示す図である。
図15は、光ディスク11に記録されるファイルの管理構造の例を示す図である。
図16は、PlayListファイルのPlayItemのSTN_tableのシンタクスを示す図である。
図17は、Clip InformationファイルのStreamCodingInfoのシンタクスを示す図である。
図19は、PGストリームとIGストリームのディスプレイセットの構成例を示す図である。
図20は、XPDSのシンタクスを示す図である。
図21は、記録装置1の構成例を示すブロック図である。
図22は、図21の符号化処理部22の構成例を示すブロック図である。
図23は、HDR-STD変換部33による信号処理の例を示す図である。
図25は、再生装置2の構成例を示すブロック図である。
図26は、図25のグラフィックス復号処理部56Bの構成例を示すブロック図である。
図27は、表示装置3の構成例を示すブロック図である。
はじめに、図28のフローチャートを参照して、記録装置1の記録処理について説明する。図28の記録処理は、マスターのHDRデータが記録装置1に入力されたときに開始される。
次に、図32のフローチャートを参照して、再生装置2の再生処理について説明する。
次に、図35のフローチャートを参照して、表示装置3の表示処理について説明する。
(AVストリームの構成例)
図36は、本技術を適用した記録・再生システムの第2実施の形態におけるAVストリームの構成例を示す図である。
図37は、Tone_mapストリームのシンタクスを示す図である。
図38は、第2実施の形態におけるClip InformationファイルのStreamCodingInfoのシンタクスを示す図である。
図39は、本技術を適用した記録・再生システムの第2実施の形態の記録装置1の符号化処理部22の構成例を示す図である。
図40は、本技術を適用した記録・再生システムの第2実施の形態の再生装置2の構成例を示す図である。
図41は、図40のグラフィックス復号処理部131Bの構成例を示すブロック図である。
図42は、記録装置1の第2の実施の形態による記録処理を説明するフローチャートである。図42の記録処理は、マスターのHDRデータが記録装置1に入力されたときに開始される。
図46は、再生装置2の第2実施の形態による再生処理を説明するフローチャートである。
(PGストリームとIGストリームの構成)
図49は、第3実施の形態におけるPGストリームとIGストリームのディスプレイセットの構成例を示す図である。
図50は、図49のXPDSのシンタクスの例を示す図である。
図51は、図49のTDSのシンタクスの例を示す図である。
図52は、本技術を適用した記録・再生システムの第3実施の形態の記録装置1の符号化処理部22の構成例を示す図である。
図53は、本技術を適用した記録・再生システムの第3実施の形態の再生装置2の構成例を示す図である。
図54は、図53のグラフィックス復号処理部171Bの構成例を示すブロック図である。
記録装置1の第3実施の形態による記録処理は、ステップS2のmode-iでの符号化処理、ステップS3のmode-iiでの符号化処理、およびステップS4のData Base情報生成処理を除いて、図28の記録処理と同様である。従って、mode-iでの符号化処理、mode-iiでの符号化処理、およびData Base情報生成処理についてのみ説明する。
再生装置2の第3実施の形態による再生処理は、ステップS44のmode-iでの復号処理とステップS45のmode-iiでの復号処理を除いて、図32の再生処理と同様である。従って、mode-iでの復号処理とmode-iiでの復号処理についてのみ説明する。
(BDJオブジェクトについて)
図60は、BDJオブジェクトに基づいて生成される画面を説明する図である。
図61は、本技術を適用した第4実施の形態におけるビデオ再生時のtone_mapping_infoを説明する図である。
図63は、本技術を適用した第4実施の形態におけるビデオ停止時のtone_mapping_infoを説明する図である。
図67は、本技術を適用した記録・再生システムの第4実施の形態の記録装置1の構成例を示す図である。
図68は、図67の符号化処理部202の構成例を示すブロック図である。
図69は、本技術を適用した再生装置2の第4実施の形態の構成例を示すブロック図である。
図70は、図67の記録装置1の記録処理を説明するフローチャートである。この記録処理は、マスターのHDRビデオが記録装置1に入力されたときに開始される。
ステップS328において、BDJオブジェクト生成部201Bは、ストリーム生成部213から供給されるビデオ再生時のtone_mapping_infoのtone_map_idを指定するコマンドをBDJオブジェクトに記述する。
図69の再生装置2のビデオストリームを再生する処理は、図32の再生処理のうちのビデオについての処理と同様であるので、説明は省略する。この処理は、BDJオブジェクトに記述されたプレイリストにしたがうビデオストリームを再生する再生コマンドに応じて行われる。
(コンピュータの構成)
上述した一連の処理は、ハードウェアにより実行することもできるし、ソフトウェアにより実行することもできる。一連の処理をソフトウェアにより実行する場合には、そのソフトウェアを構成するプログラムが、専用のハードウェアに組み込まれているコンピュータ、または汎用のパーソナルコンピュータなどに、プログラム記録媒体からインストールされる。
第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスと、前記拡張グラフィックスの輝度の特性を示すHDR情報、および、前記拡張グラフィックスから前記第1の輝度範囲のグラフィックスである標準グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出し部と、
前記対応情報において前記拡張グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記拡張グラフィックスを前記標準グラフィックスに変換する変換部と、
前記拡張グラフィックスを表示可能な表示装置に対して、前記拡張グラフィックスおよび前記対応情報において前記拡張グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記変換部により変換された前記標準グラフィックスを出力する出力部と
を備える再生装置。
(2)
前記対応情報は、前記拡張グラフィックスの再生に関する情報に含まれる
前記(1)に記載の再生装置。
(3)
前記記録媒体はブルーレイディスクであり、
前記対応情報は、前記再生に関する情報としてのPlayListファイルに含まれる
前記(2)に記載の再生装置。
(4)
前記輝度変換定義情報は、tone_map_model_idの値として0,2,3のうちのいずれかの値が設定された第1のtone_mapping_infoであり、
前記HDR情報は、tone_map_model_idの値として4が設定された第2のtone_mapping_infoである
前記(1)乃至(3)のいずれかに記載の再生装置。
(5)
前記対応情報は、前記拡張グラフィックスと、前記拡張グラフィックスの前記第1のtone_mapping_infoのtone_map_idおよび前記第2のtone_mapping_infoのtone_map_idとを対応付けた情報である
前記(4)に記載の再生装置。
(6)
前記対応情報は、第3の輝度範囲と異なるより広い第4の輝度範囲のビデオである拡張ビデオと、前記拡張ビデオの輝度の特性を示すビデオHDR情報および前記拡張ビデオから前記第3の輝度範囲のビデオである標準ビデオへの輝度変換を行うときに用いられるビデオ輝度変換定義情報とを対応付け、
前記記録媒体は、前記拡張ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を記録し、
前記読み出し部は、前記記録媒体から、前記拡張ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を読み出し、
前記変換部は、前記対応情報において前記拡張ビデオと対応付けられた前記ビデオ輝度変換定義情報に基づいて、前記拡張ビデオを前記標準ビデオに変換し、
前記出力部は、前記拡張ビデオを表示可能な表示装置に対して、前記拡張ビデオおよび前記対応情報において前記拡張ビデオと対応付けられた前記ビデオHDR情報を出力し、前記拡張ビデオを表示することができない表示装置に対して、前記変換部により変換された前記標準ビデオを出力する
前記(1)乃至(5)のいずれかに記載の再生装置。
(7)
再生装置が、
第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスと、前記拡張グラフィックスの輝度の特性を示すHDR情報、および、前記拡張グラフィックスから前記第1の輝度範囲のグラフィックスである標準グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出しステップと、
前記対応情報において前記拡張グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記拡張グラフィックスを前記標準グラフィックスに変換する変換ステップと、
前記拡張グラフィックスを表示可能な表示装置に対して、前記拡張グラフィックスおよび前記対応情報において前記拡張グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記変換ステップの処理により変換された前記標準グラフィックスを出力する出力ステップと
を含む再生方法。
(8)
第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスと、前記拡張グラフィックスの輝度の特性を示すHDR情報、および、前記拡張グラフィックスから前記第1の輝度範囲のグラフィックスである標準グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報と、
前記拡張グラフィックスと、
前記HDR情報と、
前記輝度変換定義情報と
を記録した記録媒体であって、
前記記録媒体を再生する再生装置においては、
前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を前記記録媒体から読み出し、
前記対応情報において前記拡張グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記拡張グラフィックスを前記標準グラフィックスに変換し、
前記拡張グラフィックスを表示可能な表示装置に対して、前記拡張グラフィックスおよび前記対応情報において前記拡張グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、変換された前記標準グラフィックスを出力する
処理が行われる記録媒体。
(9)
第1の輝度範囲のグラフィックスである標準グラフィックスと、前記第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスの輝度の特性を示すHDR情報、および、前記標準グラフィックスから前記拡張グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記標準グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出し部と、
前記対応情報において前記標準グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記標準グラフィックスを前記拡張グラフィックスに変換する変換部と、
前記拡張グラフィックスを表示可能な表示装置に対して、前記変換部により変換された前記拡張グラフィックスおよび前記対応情報において変換前の前記標準グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記標準グラフィックスを出力する出力部と
を備える再生装置。
(10)
前記対応情報は、前記標準グラフィックスの再生に関する情報に含まれる
前記(9)に記載の再生装置。
(11)
前記記録媒体はブルーレイディスクであり、
前記対応情報は、前記再生に関する情報としてのPlayListファイルに含まれる
前記(10)に記載の再生装置。
(12)
前記輝度変換定義情報は、tone_map_model_idの値として0,2,3のうちのいずれかの値が設定された第1のtone_mapping_infoであり、
前記HDR情報は、tone_map_model_idの値として4が設定された第2のtone_mapping_infoである
前記(9)乃至(11)のいずれかに記載の再生装置。
(13)
前記対応情報は、前記標準グラフィックスと、前記標準グラフィックスの前記第1のtone_mapping_infoのtone_map_idおよび前記第2のtone_mapping_infoのtone_map_idとを対応付けた情報である
前記(12)に記載の再生装置。
(14)
前記対応情報は、第3の輝度範囲のビデオである標準ビデオと、前記第3の輝度範囲のビデオと異なるより広い第4の輝度範囲のビデオである拡張ビデオの輝度の特性を示すビデオHDR情報および前記標準ビデオから前記拡張ビデオへの輝度変換を行うときに用いられるビデオ輝度変換定義情報とを対応付け、
前記記録媒体は、前記標準ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を記録し、
前記読み出し部は、前記記録媒体から、前記標準ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を読み出し、
前記変換部は、前記対応情報において前記標準ビデオと対応付けられた前記ビデオ輝度変換定義情報に基づいて、前記標準ビデオを前記拡張ビデオに変換し、
前記出力部は、前記拡張ビデオを表示可能な表示装置に対して、前記変換部により変換された前記拡張ビデオおよび前記対応情報において変換前の前記標準ビデオと対応付けられた前記ビデオHDR情報を出力し、前記拡張ビデオを表示することができない表示装置に対して、前記標準ビデオを出力する
前記(9)乃至(13)のいずれかに記載の再生装置。
(15)
再生装置が、
第1の輝度範囲のグラフィックスである標準グラフィックスと、前記第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスの輝度の特性を示すHDR情報、および、前記標準グラフィックスから前記拡張グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記標準グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出しステップと、
前記対応情報において前記標準グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記標準グラフィックスを前記拡張グラフィックスに変換する変換ステップと、
前記拡張グラフィックスを表示可能な表示装置に対して、前記変換ステップの処理により変換された前記拡張グラフィックスおよび前記対応情報において変換前の前記標準グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記標準グラフィックスを出力する出力ステップと
を含む再生方法。
(16)
第1の輝度範囲のグラフィックスである標準グラフィックスと、前記第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスの輝度の特性を示すHDR情報、および、前記標準グラフィックスから前記拡張グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報と、
前記標準グラフィックスと、
前記HDR情報と、
前記輝度変換定義情報と
を記録した記録媒体であって、
前記記録媒体を再生する再生装置においては、
前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を前記記録媒体から読み出し、
前記対応情報において前記標準グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記標準グラフィックスを前記拡張グラフィックスに変換し、
前記拡張グラフィックスを表示可能な表示装置に対して、変換された前記拡張グラフィックスおよび前記対応情報において変換前の前記標準グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記標準グラフィックスを出力する
処理が行われる記録媒体。
Claims (16)
- 第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスと、前記拡張グラフィックスの輝度の特性を示すHDR情報、および、前記拡張グラフィックスから前記第1の輝度範囲のグラフィックスである標準グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出し部と、
前記対応情報において前記拡張グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記拡張グラフィックスを前記標準グラフィックスに変換する変換部と、
前記拡張グラフィックスを表示可能な表示装置に対して、前記拡張グラフィックスおよび前記対応情報において前記拡張グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記変換部により変換された前記標準グラフィックスを出力する出力部と
を備える再生装置。 - 前記対応情報は、前記拡張グラフィックスの再生に関する情報に含まれる
請求項1に記載の再生装置。 - 前記記録媒体はブルーレイディスクであり、
前記対応情報は、前記再生に関する情報としてのPlayListファイルに含まれる
請求項2に記載の再生装置。 - 前記輝度変換定義情報は、tone_map_model_idの値として0,2,3のうちのいずれかの値が設定された第1のtone_mapping_infoであり、
前記HDR情報は、tone_map_model_idの値として4が設定された第2のtone_mapping_infoである
請求項1に記載の再生装置。 - 前記対応情報は、前記拡張グラフィックスと、前記拡張グラフィックスの前記第1のtone_mapping_infoのtone_map_idおよび前記第2のtone_mapping_infoのtone_map_idとを対応付けた情報である
請求項4に記載の再生装置。 - 前記対応情報は、第3の輝度範囲と異なるより広い第4の輝度範囲のビデオである拡張ビデオと、前記拡張ビデオの輝度の特性を示すビデオHDR情報および前記拡張ビデオから前記第3の輝度範囲のビデオである標準ビデオへの輝度変換を行うときに用いられるビデオ輝度変換定義情報とを対応付け、
前記記録媒体は、前記拡張ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を記録し、
前記読み出し部は、前記記録媒体から、前記拡張ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を読み出し、
前記変換部は、前記対応情報において前記拡張ビデオと対応付けられた前記ビデオ輝度変換定義情報に基づいて、前記拡張ビデオを前記標準ビデオに変換し、
前記出力部は、前記拡張ビデオを表示可能な表示装置に対して、前記拡張ビデオおよび前記対応情報において前記拡張ビデオと対応付けられた前記ビデオHDR情報を出力し、前記拡張ビデオを表示することができない表示装置に対して、前記変換部により変換された前記標準ビデオを出力する
請求項1に記載の再生装置。 - 再生装置が、
第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスと、前記拡張グラフィックスの輝度の特性を示すHDR情報、および、前記拡張グラフィックスから前記第1の輝度範囲のグラフィックスである標準グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出しステップと、
前記対応情報において前記拡張グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記拡張グラフィックスを前記標準グラフィックスに変換する変換ステップと、
前記拡張グラフィックスを表示可能な表示装置に対して、前記拡張グラフィックスおよび前記対応情報において前記拡張グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記変換ステップの処理により変換された前記標準グラフィックスを出力する出力ステップと
を含む再生方法。 - 第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスと、前記拡張グラフィックスの輝度の特性を示すHDR情報、および、前記拡張グラフィックスから前記第1の輝度範囲のグラフィックスである標準グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報と、
前記拡張グラフィックスと、
前記HDR情報と、
前記輝度変換定義情報と
を記録した記録媒体であって、
前記記録媒体を再生する再生装置においては、
前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を前記記録媒体から読み出し、
前記対応情報において前記拡張グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記拡張グラフィックスを前記標準グラフィックスに変換し、
前記拡張グラフィックスを表示可能な表示装置に対して、前記拡張グラフィックスおよび前記対応情報において前記拡張グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、変換された前記標準グラフィックスを出力する
処理が行われる記録媒体。 - 第1の輝度範囲のグラフィックスである標準グラフィックスと、前記第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスの輝度の特性を示すHDR情報、および、前記標準グラフィックスから前記拡張グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記標準グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出し部と、
前記対応情報において前記標準グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記標準グラフィックスを前記拡張グラフィックスに変換する変換部と、
前記拡張グラフィックスを表示可能な表示装置に対して、前記変換部により変換された前記拡張グラフィックスおよび前記対応情報において変換前の前記標準グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記標準グラフィックスを出力する出力部と
を備える再生装置。 - 前記対応情報は、前記標準グラフィックスの再生に関する情報に含まれる
請求項9に記載の再生装置。 - 前記記録媒体はブルーレイディスクであり、
前記対応情報は、前記再生に関する情報としてのPlayListファイルに含まれる
請求項10に記載の再生装置。 - 前記輝度変換定義情報は、tone_map_model_idの値として0,2,3のうちのいずれかの値が設定された第1のtone_mapping_infoであり、
前記HDR情報は、tone_map_model_idの値として4が設定された第2のtone_mapping_infoである
請求項9に記載の再生装置。 - 前記対応情報は、前記標準グラフィックスと、前記標準グラフィックスの前記第1のtone_mapping_infoのtone_map_idおよび前記第2のtone_mapping_infoのtone_map_idとを対応付けた情報である
請求項12に記載の再生装置。 - 前記対応情報は、第3の輝度範囲のビデオである標準ビデオと、前記第3の輝度範囲のビデオと異なるより広い第4の輝度範囲のビデオである拡張ビデオの輝度の特性を示すビデオHDR情報および前記標準ビデオから前記拡張ビデオへの輝度変換を行うときに用いられるビデオ輝度変換定義情報とを対応付け、
前記記録媒体は、前記標準ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を記録し、
前記読み出し部は、前記記録媒体から、前記標準ビデオ、前記ビデオHDR情報、および前記ビデオ輝度変換定義情報を読み出し、
前記変換部は、前記対応情報において前記標準ビデオと対応付けられた前記ビデオ輝度変換定義情報に基づいて、前記標準ビデオを前記拡張ビデオに変換し、
前記出力部は、前記拡張ビデオを表示可能な表示装置に対して、前記変換部により変換された前記拡張ビデオおよび前記対応情報において変換前の前記標準ビデオと対応付けられた前記ビデオHDR情報を出力し、前記拡張ビデオを表示することができない表示装置に対して、前記標準ビデオを出力する
請求項9に記載の再生装置。 - 再生装置が、
第1の輝度範囲のグラフィックスである標準グラフィックスと、前記第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスの輝度の特性を示すHDR情報、および、前記標準グラフィックスから前記拡張グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報、前記標準グラフィックス、前記HDR情報、および前記輝度変換定義情報を記録した記録媒体から、前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を読み出す読み出しステップと、
前記対応情報において前記標準グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記標準グラフィックスを前記拡張グラフィックスに変換する変換ステップと、
前記拡張グラフィックスを表示可能な表示装置に対して、前記変換ステップの処理により変換された前記拡張グラフィックスおよび前記対応情報において変換前の前記標準グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記標準グラフィックスを出力する出力ステップと
を含む再生方法。 - 第1の輝度範囲のグラフィックスである標準グラフィックスと、前記第1の輝度範囲と異なるより広い第2の輝度範囲のグラフィックスである拡張グラフィックスの輝度の特性を示すHDR情報、および、前記標準グラフィックスから前記拡張グラフィックスへの輝度変換を行うときに用いられる輝度変換定義情報とを対応付けた対応情報と、
前記標準グラフィックスと、
前記HDR情報と、
前記輝度変換定義情報と
を記録した記録媒体であって、
前記記録媒体を再生する再生装置においては、
前記対応情報、前記拡張グラフィックス、前記HDR情報、および前記輝度変換定義情報を前記記録媒体から読み出し、
前記対応情報において前記標準グラフィックスと対応付けられた前記輝度変換定義情報に基づいて、前記標準グラフィックスを前記拡張グラフィックスに変換し、
前記拡張グラフィックスを表示可能な表示装置に対して、変換された前記拡張グラフィックスおよび前記対応情報において変換前の前記標準グラフィックスと対応付けられた前記HDR情報を出力し、前記拡張グラフィックスを表示することができない表示装置に対して、前記標準グラフィックスを出力する
処理が行われる記録媒体。
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US20200236335A1 (en) | 2020-07-23 |
PH12015502760A1 (en) | 2016-03-21 |
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CN110798641A (zh) | 2020-02-14 |
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