WO2009101819A1 - 再生装置、集積回路、再生方法、プログラム、コンピュータ読取可能な記録媒体 - Google Patents
再生装置、集積回路、再生方法、プログラム、コンピュータ読取可能な記録媒体 Download PDFInfo
- Publication number
- WO2009101819A1 WO2009101819A1 PCT/JP2009/000579 JP2009000579W WO2009101819A1 WO 2009101819 A1 WO2009101819 A1 WO 2009101819A1 JP 2009000579 W JP2009000579 W JP 2009000579W WO 2009101819 A1 WO2009101819 A1 WO 2009101819A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- color
- index
- information
- gradation
- display
- Prior art date
Links
Images
Classifications
-
- 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
- H04N9/8233—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 the additional signal being a character code signal
- H04N9/8244—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 the additional signal being a character code signal involving the use of subcodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
-
- 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
- H04N9/802—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving processing of the sound signal
-
- 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
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
-
- 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
Definitions
- the present invention is an invention belonging to the technical field of text subtitle display technology.
- Text subtitle display is a technology that displays subtitles expressed in text code in synchronization with individual pictures in a movie, and is one of the technologies specific to BD-ROM (Blu-ray Disc Read Memory ⁇ ) playback devices. It is.
- the BD-ROM playback device uses fonts to expand character codes that constitute subtitles into bitmaps, and performs control to display the bitmaps in synchronization with individual pictures in the video stream.
- the conventional caption display technology When displaying graphics and characters on a display device such as a consumer television monitor, the display content of each pixel is held in a frame memory. At this time, if color information such as ⁇ , R, G, and B values is held for each pixel, the frame memory becomes large. For example, assuming that 1-byte values of ⁇ , R, G, and B are stored as color information for each pixel, a 4-byte memory is required for each pixel.
- the frame memory is reduced by using a color lookup table.
- the color lookup table is a table that holds the relationship between the index value stored in the memory for each pixel and the color information corresponding to the index value.
- the color lookup table holds the correspondence between the index value and the color information, holds only the index value for each pixel, and converts the index value to the color information while referring to the color lookup table at the display stage. To display.
- the conventional text subtitle stream playback technology displays characters by expanding the outline font, so depending on the size of the characters, jaggy in the outline is conspicuous, and the quality is higher than that of subtitles displayed as a bitmap. There is a problem that inferiority occurs.
- the gradation color display means displaying characters using not only the character color and the background color but also an intermediate color created from the character color and the background color. By doing so, the color gradually changes between the character and the background, and it is possible to eliminate the jagged feeling that appears at the edge portion between the character and the background.
- the prior art described in Patent Document 1 generates and displays multi-tone character data using an empty index of a color lookup table.
- an empty index in the color lookup table is automatically assigned as a gradation color index, and the correspondence between the combination of the character color index and the background color index and the assigned gradation color index is retained. Then, the color information of the index assigned as the gradation color index is updated, and the color lookup table is stored in the color lookup table storage unit. Thereafter, the gradation character is drawn in the frame memory using the assigned gradation color index.
- the usage status of the index in the color look-up table changes greatly with time in accordance with the progress of playback of the video stream, so it is inconvenient to apply the gradation color display as described above as it is. is there.
- This change in usage status is brought about by a plurality of character string display instruction information inside the text stream.
- the playback device uses subtitles that match the current playback time among a plurality of character string display instruction information inside the text subtitle stream as the video stream is played back. Execute the display.
- Some of the character string display instruction information may instruct the playback device to update a color lookup table used for color conversion for character display.
- the tone color is arbitrarily assigned to the index for the tone color display, the use of the index competes between the tone color display and the character string display instruction information. If the playback device automatically assigns the tone color to the empty index, and the character string display instruction information assigns the color information to the same index, the tone color is the tone color that should be originally used. There is a possibility that a coloring error occurs in which different colors, that is, the color information assigned to the index by the character string display instruction information are displayed.
- the index used in the text subtitle stream is analyzed in advance, and the gradation color can be assigned to an index that does not overlap with the used index.
- the number of indexes that can be selected for the tone color is reduced, and it should be used for tone color display.
- the number of colors that can be In this case sufficient gradation for gradation color display cannot be ensured, and the quality of subtitle characters cannot be improved.
- An object of the present invention is to provide a reproducing apparatus capable of securing sufficient gradation for gradation color display while avoiding competition with color lookup table update by character string display instruction information. .
- a playback device is a playback device that performs synchronous playback of a video stream and a subtitle stream, decodes the video stream, decodes the subtitle stream, A subtitle decoder that obtains subtitle images and a color conversion unit that performs gradation display of subtitle images by using a color look-up table are provided.
- the color look-up table is associated with a plurality of indexes and each index.
- the subtitle decoder analyzes in advance the time period of the video stream time axis during which index use in subtitle display continues when the color converter performs gradation display of subtitle images. Used for the text color and background color of the subtitle image during the duration The index of the free, except for the index is characterized by assigning color information of gradation color.
- the period in which the index use in the caption display continues is analyzed in advance, and the gradation color is added to the empty index excluding the used index used for the character color and the background color in the caption image. Since the color information is allocated, the index use in subtitle display and the index use for gradation color display do not compete in the index use continuation section, and the display color error as described above does not occur. . *
- the display period brought about by the character string display instruction information of the subtitle stream is divided into time units called index use continuation intervals, and gradation colors are assigned to unused indexes in this time unit. Therefore, the number of indexes that can be used is not extremely reduced. Coloring errors can be avoided by avoiding contention for index use within a closed time unit called an index use continuation interval. Therefore, the number of gradations of gradation colors can be ensured, and gradation color display with high quality can be realized. By realizing such gradation display, high-quality text subtitles that are not inferior to bitmap subtitles can be reproduced together with the video stream.
- the above-described playback device has a problem that may occur when all character string display instruction information is analyzed in advance, that is, the problem that the time until the first character string is displayed becomes longer. This is resolved by dividing the range by the time when the entire display area is updated. That is, the period until the character string is first displayed is shortened by setting the period during which the display area is completely updated as the range of the pre-analysis. Thereby, high-speed gradation display using abundant number of colors can be realized.
- FIG. 6 It is a block diagram of the reproducing
- the playback device performs synchronized playback of an AV stream and a text subtitle stream according to playlist information.
- the AV stream is configured by multiplexing a video stream and an audio stream.
- the text subtitle stream is not multiplexed with the AV stream.
- the text subtitle stream is stored in a file different from the file storing the AV stream and recorded on the BD-ROM.
- the playlist information includes one or more pieces of playback section information.
- the playback section information includes information indicating the file name of the AV stream management information associated with the AV stream, the playback start point of the AV stream, and the playback end. It includes information indicating points and a stream number table.
- This playlist information, AV stream, and text subtitle stream are called one content (simply “playlist”) in the BD-ROM.
- the stream number table is information indicating one or more text subtitle streams that can be reproduced in synchronization with the AV stream, and includes a language code of the text subtitle stream.
- the AV stream management information describes a font identifier.
- the playback apparatus determines whether or not one or more text subtitle streams indicated in the stream number table in the playback section information in the playlist information satisfy all the following first to third conditions: Is selected, and one of the text subtitle streams determined to be satisfied is selected.
- the font data indicated by the font identifier in the AV stream management information is read from the recording medium and preloaded into the memory of the playback device.
- the first, second and third conditions for selecting a text subtitle stream are as follows.
- the first condition is that the playback apparatus has the ability to expand a text code constituting a text subtitle stream to be selected into a font and expand it into a two-dimensional pattern of pixel codes.
- the second condition is that a unique display method (vertical writing, kerning, ruby, prohibition processing, etc.) can be realized in the language corresponding to the language code of the text subtitle stream to be selected.
- the third condition is that the language code of the text subtitle stream to be selected matches the language setting of the playback device. Since the text subtitle stream satisfying these conditions is a text subtitle stream suitable for display as a text subtitle, the text code in the text subtitle stream is developed using font data and reproduced together with the AV stream.
- FIG. 1 is a configuration diagram of a playback apparatus according to the first embodiment.
- the playback device includes a ROM drive 1, a read buffer 2, a filter 3, a transfer buffer 4, a video decoder 5, a video plane 6, a transfer buffer 7, a preload memory 8, a text subtitle decoder 9, and a graphics plane 10.
- the text subtitle decoder 9 corresponds to a character string display device.
- ROM drive 1 performs ROM loading / reading / ejecting and accesses the ROM disk.
- Read buffer 2 is a buffer for storing TS packets read from the ROM drive.
- Filter 3 distributes a plurality of TS packets output from read buffer 2 to transfer buffer 4.
- the transfer buffer 4 is a buffer for storing TS packets constituting the video stream output from the filter 3.
- the video decoder 5 decodes the video data stored in the transfer buffer 4 and writes uncompressed video data to the video plane 6.
- the video plane 6 is a frame memory for storing uncompressed video data.
- the transfer buffer 7 is a buffer for storing TS packets constituting the text subtitle stream output from the filter 3.
- the preload memory 8 is a buffer for storing a text subtitle stream, and the subtitle stream is stored before the first playlist is reproduced.
- the text subtitle decoder 9 decodes the data stored in the preload memory 8. Then, the subtitle characters are written into the graphics plane 10 and a color lookup table is set in the color conversion unit 11.
- the graphics plane 10 has an area for one screen and stores subtitle characters. Pixels in this graphics plane are represented by pixel codes.
- the “pixel code” is a 4-bit, 1-byte, or 2-byte code that can be expanded into color information via a color lookup table.
- a numerical value that can be taken by the pixel code is referred to as a “pixel value”, and an index to which color information is assigned in the color lookup table is used as the pixel value.
- the subtitle characters stored in the graphics plane 10 are expressed by the two-dimensional pattern of the pixel code.
- a subtitle character displayed using a pixel code of gradation color is called a “gradation character”.
- the color conversion unit 11 stores a color lookup table, and performs color conversion of pixel codes using this color lookup table.
- the color look-up table shows the correspondence between index values and color information.
- the color information in the color look-up table may be constituted by transparency ⁇ , luminance Y, red difference Cr, and blue difference Cb, or by transparency ⁇ , red luminance R, green luminance G, and blue luminance B. May be.
- the color information is assumed to be a combination of transparency, red luminance, green luminance, and blue luminance (denoted as ( ⁇ , R, G, B)).
- the font data storage unit 12 is a buffer for storing font data read from the ROM drive 1 as font data. This font data is stored before the play list is reproduced, as in the preload memory 8.
- the synthesizing unit 13 synthesizes the video output and the graphics output and outputs them to the display outside the apparatus.
- the video output is data output from the video plane 6.
- the graphics output is image data obtained by converting graphics data stored in the graphics plane 10 using an index value stored in the graphics plane 10 and a color lookup table stored in the color conversion unit 11.
- the transfer buffer 14 is a buffer for storing TS packets constituting the audio stream output from the filter 3.
- the audio decoder 15 decodes the audio data stored in the transfer buffer 4 and outputs it as an uncompressed audio output.
- FIG. 2 is a diagram showing video output by the playback device.
- the synthesizing unit 13 synthesizes the subtitle characters stored in the graphics plane 10 and the uncompressed video stored in the video plane 6 and outputs the synthesized image to the display. I understand that.
- the text subtitle stream includes a plurality of character string display instruction information indicating when and how to display what character string.
- FIG. 3 is a diagram showing an internal configuration of character string display instruction information in a text subtitle stream.
- the upper half of FIG. 3 is a text subtitle stream, in which character string display instruction information 1, 2, 3,. These character string display instruction information are a plurality of instances generated from a common class structure, and the internal configuration is common.
- the lead line h1 closes up the structure of the character string display instruction information. As indicated by the lead line h1, the character string display instruction information has three common components: “time information”, “color lookup table update instruction information”, and “drawing update instruction information”.
- the lead line h2 closes up the structure of the time information.
- the time information is “start time” which is a time when the display by the character string display instruction information is started on the time axis, and “end” which is a time when the display by the character string display instruction information is ended. Time "is included.
- start time and end time the synchronization point on the time axis of the video stream is set. T0 and T1 in the figure are examples of the synchronization point.
- the leader line h3 closes up the configuration of the color lookup table update instruction information. As shown by the lead line h3, it includes a “color lookup table update flag”, a “color lookup table update count”, and M “color lookup table update information”.
- Color lookup table update flag is a flag indicating whether or not the color lookup table is updated, and has two states of “update” and “not update”.
- the lead-out line h8 closes up the configuration of the color lookup table update number. That is, the number of color lookup table updates indicates the number “M” of the following color lookup table update information.
- Color Lookup Table Update Information is an optional component that is added only when “Color Lookup Table Update Flag” is set to “Update”. When the “color lookup table update flag” is set to “do not update”, the color lookup table update information is not stored.
- a lead line h7 closes up the configuration of the color lookup table update information. As shown in this lead line, the color lookup table update information is subject to the “index to be changed” indicating which color information of the color lookup table is to be changed at the start time in the time information. The index includes “color information after change” indicating which color information should be assigned. This completes the description of the color lookup table update information. Next, drawing update information will be described.
- FIG. 4 shows the internal structure of the drawing update information.
- the lead line h4 closes up the configuration of the drawing update information.
- the drawing update information has a data structure linked to the number of display areas in the graphics plane 10.
- the drawing update information includes “display area number”, “drawing update drawing update flag of area 1”, “display area information of area 1”, “ It is composed of “Drawing update information of area 1”, “Drawing update flag of area N”, “Display area information of area N”, and “Drawing update information of area N”.
- the drawing update information is only “number of display areas”.
- drawing update information a combination of the drawing update flag, the display area information, and the drawing update information corresponds to each of a plurality of areas (area 1 to area N). It will appear in the information.
- components of the drawing update information will be described.
- Numberer of display areas indicates how many character string display areas exist on the screen.
- “Drawing update flag” is a flag indicating whether or not drawing is updated, and has two states of “update” and “not update”.
- drawing update flag is set to “update”
- drawing update information is stored.
- “not update” is designated, the drawing update information is not stored and the previous display is maintained.
- the number of areas to be displayed is specified by the number of display areas, and dynamically changes with the progress of the current playback point in the video stream. When the number of display areas decreases, the areas return to the non-display state.
- the drawing update flag is designated as “not updated”, it is determined from the display area information which area in the previous display is not updated. That is, when the drawing update flag is designated as “not updated”, the display area information in the character string display instruction information corresponding to the area that is not different from the previous display is displayed as it is without being updated. .
- Display area information includes "Display area coordinates (Xa, Yb)", “Display area size (width, Height)”, “Text drawing coordinates (Xc, Yd)", and "Background color specification” Is included.
- the lead line h6 closes up the structure of the drawing update information.
- the drawing update information includes “character text code (“ American History ”)” and “designation of character color”.
- a plurality of drawing update information can be specified for one display area, and the character color can be changed for each character.
- the index specified for the background color by the display area information and the index used for the character color by the drawing update information are the color lookup table update information of the character string display instruction information to which the display area information and the drawing update information belong, or display The color information is assigned by the color lookup table update information of the character string display instruction information preceding the character string display instruction information to which the region information and the drawing update information belong.
- the index to which the background color and the character color are assigned by the display area information and the drawing update information is equal to the index to which the color information is assigned by the color lookup table update information, and the color information is assigned by the display area information and the drawing update information. If the index is excluded from the tone color assignment, the index whose color information is updated by the color lookup table update information can be excluded from the tone color assignment.
- FIG. 5 is a diagram showing the relationship between the graphics plane, display area information, and drawing update information.
- the graphics plane can store vertical 1080 ⁇ horizontal 1920 pixels. In this, one or more areas 1 and 2 can be secured.
- the display coordinates (Xa, Xb) of the area in the graphics plane and the arrangement coordinates (Xc, Xd) of the characters in the area are specified by the display area information in the drawing update instruction information.
- a subtitle character “American History...” Corresponding to the text code in the drawing update information in the drawing update instruction information is arranged.
- FIG. 6 shows the start time and end time of a plurality of character string display instruction information (character string display instruction information 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) as the playback time of the video stream. It is a figure which shows an example of how it is set in the axis
- the first row shows a text subtitle stream including character string display instruction information 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and the second row shows the area shown in FIG. 1 and 2 display periods are shown.
- FIG. 7 shows how the number of display areas of each character string display instruction information and the drawing update flag are set in the text subtitle stream in which the start time and end time are set as shown in FIG.
- the first level is the setting of the number of display areas in the drawing update information of each character string display instruction information
- the second level is the setting of the drawing update flag in the drawing update information of each character string display instruction information.
- the third level is the display period of region 1 and region 2.
- the start time and end time stored in the first character string display instruction information 1 are times T0 and T1, respectively.
- the start time and end time stored in the second character string display instruction information 2 are times T1 and T2, respectively.
- the display area 1 continues the same display from time T0 to time T3.
- the display period in the third row overlaps between time points T1 and T2.
- the drawing update flag of the area 1 is set to “not update”, so the area 1 holds the display at the time T3 as it is.
- the character string display instruction information 7 starting from the time T6, the number of display areas is 2, and the drawing update flag is set so that the area 1 is “not updated” and the area 2 is set “not updated”. For this reason, the display period in the third row overlaps between T6 and T7.
- FIG. 8 shows the internal structure of the text subtitle decoder 9.
- the text subtitle decoder 9 includes a character string display instruction analysis unit 21, a pre-analysis unit 22, a color lookup table control unit 23, a drawing control unit 24, and a drawing unit 25.
- the character string display instruction analysis unit 21 performs prior analysis of the usage status of the index prior to reproduction of the playlist.
- the starting point of the pre-analysis range is the start time of the character string display instruction information in which the drawing update flags of all display areas are set to “update” (this is referred to as character string display instruction information i).
- the end point of the pre-analysis range is the character string display instruction information subsequent to the character string display instruction information i, and the number of display areas in the drawing update information becomes “0” or depends on the number of display areas in the drawing update information.
- Up to the end time of the character string display instruction information j positioned immediately before the drawing update flag of all the display areas for which the number is specified is set to “update”.
- all display areas are the number of display areas indicated in the number of display update information display areas. If the number of display areas is “1”, drawing for one display area is performed. If the update flag is set to “update”, the display area specified by the number of display areas in the drawing update information is completely updated. If the number of display areas is “2”, if the drawing update flag for the two display areas is set to “update”, the display area specified by the number of display areas in the drawing update information is completely updated. Will be.
- the period in which the drawing update flag for any area is set to “do not update” is a period during which the index is being used. Such a period, that is, the start point and end point of the index use continuation section, coincides with the start point and end point of the pre-analysis range. Therefore, in the graphics plane 10, the timing at which the display area specified by the number of display areas in the drawing update information is completely updated is set as the start point of the pre-analysis range. Next, in the graphics plane 10, the number of display areas in the drawing update information is " The timing when it becomes 0 "or the timing when the display area designated by the number of display areas in the drawing update information is completely updated is detected, and the period immediately before this update timing is set as the end point of the pre-analysis range.
- the number of display areas of the character string display instruction information 1 in FIG. 7 is “1”, and the drawing update flag of the area 1 in the character string display instruction information 1 is set to “update”.
- One index use continuation period (from T0 which is the start time of the character string display instruction information 1 to T3 which is the end time of the character string display instruction information 3 (character string display instruction information immediately before the character string display instruction information 4) ( It becomes index use continuation section 1).
- the number of display areas of the character string display instruction information 4 is “1”
- the drawing update flag of the area 1 in the character string display instruction information 4 is set to “update”
- the display area in the character string display instruction information 9 Since the number is set to “0”
- the end time of the character string display instruction information 8 (character string display instruction information immediately before the character string display instruction information 9) from T3 which is the start time of the character string display instruction information 4 Up to T8 is one index use continuation section (index use continuation section 2).
- FIG. 9 is a diagram showing an index use continuation section obtained by dividing the display period of FIG. 7 by the start time of the character string display instruction information.
- the first level is a drawing update flag setting
- the second level is an index use continuation section.
- the third and fourth rows are display periods
- the fourth row is the usage status of the color lookup table. It can be seen that the time points T0, T3, T8, and T9 when the drawing update flag is set to “Yes (update)” are the starting points of the index use continuation period, and four index use continuation periods are obtained.
- the fifth row shows the index specified by the drawing update information of the character string display instruction information.
- the drawing update information of the character string display instruction information 1 “0” and “1” are used as the index of the character color index and the background color index.
- indexes of “4” to “15” can be assigned to the gradation colors.
- the index used in the index use continuation section 2 can be assigned to the gradation color.
- the index used in the index use continuation section 1 is used as the gradation color. Since it can be assigned, the numerical value range of the index that can be assigned to the gradation color is widened, and the subtitle display can be displayed neatly with abundant gradation colors.
- a gradation color is assigned to an index other than “0” and “1” used in the character string display instruction information 1, it is specified in the drawing update information of the character string display instruction information 2.
- a gradation color may be assigned to the indexes “2” and “3”.
- the index use continuation section is analyzed in advance, and the used index is searched within the index use continuation section. Therefore, the display periods overlap and the index usage is selectively maximized.
- the indexes “0”, “1”, “2”, and “3” that are used can be excluded from the gradation color assignment. By doing so, it is possible to reliably eliminate coloring errors.
- the tone color management table is a table for managing the tone color index assigned to the combination of the character color index and the background color index.
- Pre-analysis unit 22 Upon receiving an instruction from the character string display instruction analysis unit 21 to create a tone color management table, the pre-analysis unit 22 acquires character string display instruction information belonging to the index use continuation section, and before the drawing process starts, Pre-analyze the usage status of the index and create a toning management table.
- the pre-analysis unit 22 acquires an index used as a character color and a background color (hereinafter referred to as usage index information) from the drawing update information of the character string display instruction information. Further, a combination of an index designated as a character color and an index used as a background color (hereinafter referred to as “character background color combination information”) is acquired.
- the pre-analysis unit 22 creates a gradation color management table based on the acquired use index information and character background color combination information.
- FIG. 10 is a diagram illustrating an example of how the gradation color management table is generated.
- FIG. 10A shows a used index management table showing used indexes that are clarified by analysis of the text subtitle stream. As shown in the figure, it is assumed that indexes “0” and “2” are used as character indexes and indexes “1” and “3” are used as background indexes in a certain index use continuation section. . For this use situation, the generated tone color management table is as shown in FIG.
- FIG. 10B is an example of a tone color management table.
- indexes of “16”, “17”, “18”, and “19” are used for gradation colors.
- the tone color index is associated with each combination of the character color index and the background color index (the combination of “0”, “1”, the combination of “2”, “3” in the figure). It has been. Specifically, the combination of “0” and “1” is associated with gradation color indexes of “16” and “17”, and the combination of “2” and “3” is “18”.
- the gradation color indexes “,” “19” are associated with each other.
- the number of gradation color indexes assigned to each combination of character color and background color is calculated from the number of unused indexes and the number of combinations of character color and background color.
- the gradation number is determined depending on how many bits represent one pixel.
- the number of used indexes in a certain index use continuation section is M and the bit width of the index is n
- FIG. 11 is a diagram schematically showing how the number of gradations is determined.
- FIG. 11A shows gradation color expression by a 2-bit pixel value.
- the pixel value is 2 bits, since the pixel values 0 and 3 are already assigned as the background color and the character color, respectively, there are two indexes that must be assigned as the gradation color.
- FIG. 11B shows a gradation color expression by a 4-bit pixel value.
- FIG. 11 (c) shows the relationship between the maximum number of gradation indexes and the number of gradation indexes.
- gradation colors can be assigned to two indexes excluding the character color index and the background color.
- gradation colors can be assigned to 14 indexes excluding the character color index and the background color. For example, if the maximum number of gradation indexes is 3, the number of gradation indexes is 2.
- the pre-analysis unit 22 notifies the character string display instruction analysis unit 21 that the tone color management table has been created.
- the color lookup table control unit 23 obtains the gradation color management table, and obtains color lookup table update information from the character string display instruction analysis unit 21. Thereafter, a color lookup table is created based on the color lookup table update instruction information and the gradation management table.
- FIG. 10C shows the usage status of the color lookup table when the usage status of the character color index and the background color index is FIG.
- the color look-up table is composed of an index and color information.
- the color lookup table control unit 23 instructs the color conversion unit 11 to store the color lookup table.
- the color lookup table control unit 23 first updates all the color information of the index for which a change instruction has been given from the character string display instruction analysis unit 21.
- the color look-up table control unit 23 checks whether or not the specified index is included in the gradation color management table as the character color and the background color. If included, the color information of the gradation color index corresponding thereto is included. Calculate For example, when the gradation number is N, the character color and background color are the character colors ( ⁇ a, Ra, Ga, Ba). Background color ( ⁇ b, Rb, Gb, Bb) Then, the color tone is calculated as follows.
- FIG. 10D is a diagram showing a color lookup table in which color information is set for the gradation color index.
- the indexes of “16”, “17”, “18”, and “19” have (r16, g16, b16), (r17, g17, b17), (r18, g18, b18), respectively. ), (R19, g19, b19) color information is assigned.
- a gradation color can be obtained in the graphics plane 10. .
- the drawing control unit 24 instructs the drawing unit 25 to draw in the frame memory in accordance with an instruction from the character string display instruction analysis unit 21.
- Drawing update information is passed from the character string display instruction analysis unit 21, but this does not include a tone color index.
- the gradation color index is obtained and acquired from the gradation color management table.
- the gradation color index for the combination of the character color index and the background color index used in the drawing update information of the character string display instruction information is acquired from the gradation color management table, and the gradation using the acquired gradation color index is obtained.
- the drawing unit 25 is instructed to draw a character.
- the drawing unit 25 draws the background and the character string on the graphics plane 10 with the designated position, size, and designated index according to the instruction of the drawing control unit 24. Each character image is generated from outline information stored in the font data, and a gradation character image is generated with a specified gradation number. The drawing unit 25 draws the gradation character using the gradation index passed from the drawing control unit 24.
- the font data is acquired from the font data storage unit 12.
- FIG. 12 is a diagram illustrating an example of a pixel code pattern indicating a gradation color.
- the pixel code is 1 byte.
- a character is drawn using “FF”, and a background is drawn using “00”. Since pixel codes “10” to “E0” are assigned to gradation colors, the outline of the character is drawn using these pixel codes. As a result, the jaggedness per outline of the character is reduced.
- FIG. 13 shows gradation characters displayed by performing color conversion on the two-dimensional pattern of the pixel code of FIG.
- FIG. 14 shows a playback video by the playback device.
- a synthesized video as shown in this figure can be obtained.
- the subtitles in the area can change as the current playback time progresses.
- T1 the subtitle “American History” of region 1 is displayed
- T2 the subtitle “American History” of region 1 and the subtitle “The NewYork City” of region 2 are displayed
- T3 the subtitle “American History” of region 2 is displayed. Only “The New York City”.
- the components of the text subtitle decoder as described above can be implemented by software. Specifically, the processing procedures in the flowcharts of FIGS. 15 to 19 are described in a programming language, and a program for incorporation into the playback apparatus is described, so that implementation by software becomes possible.
- FIG. 15 is a flowchart showing the processing procedure corresponding to the main routine among the playlist playback processing procedures.
- a text subtitle stream to be reproduced in the playlist is preloaded (step S1), and the index use continuation section is analyzed (step S2).
- a gradation color management table is created (step S3), the start of video stream playback is ordered, and synchronous playback processing with the video stream is started (step S5).
- FIG. 16 is a flowchart showing the analysis procedure of the index use continuation section.
- the variable i is a variable that indicates character string display instruction information
- the variable k is a variable that indicates an index use continuation section.
- In_Time is a variable representing the start point of the index use continuation section
- Out_Time is a variable representing the end point of the index use continuation section.
- Steps S11 to S17 have a loop structure in which the variable i is initialized with 1, the variable k is initialized with 0 (S11), and the processing of steps S12 to S17 is repeated.
- the loop termination condition is that i is determined to be the maximum number in step S16. Unless i is the maximum number, variable i is incremented in step S17.
- Step S12 is a step in which it is determined whether or not a drawing update flag for the display area in the character string display instruction information i indicates “not updated”.
- step S12 is No because there is no drawing update flag set as “not updated”.
- step S13 the variable k is incremented (step S13)
- the start time of the character string display instruction information is set as In_Time of the index use continuation section k (step S14)
- step S15 Set as k Out_Time (step S15). By doing so, the display period of the character string display instruction information i becomes one index use continuation section k.
- step S12 if there is at least one drawing update information indicating “not update”, step S13 and step S14 are skipped. In this way, the end time of the character string display instruction information i is set as Out_Time of the index use continuation section k without incrementing the variable k (step S15). By doing so, the display period of the character string display instruction information is integrated into the same index use continuation section k as the display period of the character string display instruction information immediately before.
- FIG. 17 is a flowchart showing a procedure for creating a gradation color management table.
- Step S21 and Step S22 have a loop structure that repeats the processing of Step S23 to Step S29 for all index use continuation sections.
- index usage continuation section k The index usage continuation section that is the processing target is designated as index usage continuation section k.
- Arbitrary character string display instruction information belonging to the index use continuation section k is set as character string display instruction information i.
- steps S23 and S24 the process of setting the index used in the drawing update information of the character string display instruction information i as a used index (step S25) is repeated for all the character string display instruction information.
- the maximum number of gradations N is calculated by calculating (Step S28).
- the color information of gradation color n in the range from 1 to N-1 is ( ⁇ b + ( ⁇ a ⁇ b) ⁇ n / (N ⁇ 1), Rb + (Ra ⁇ Rb) ⁇ n / (N ⁇ 1)), Gb + (Ga ⁇ Gb) ⁇ n / (N ⁇ 1), Bb + (Ba ⁇ Bb) ⁇ n / (N ⁇ 1)) are determined (step S28).
- a gradation color management table is obtained by assigning gradation color n to N-2 indexes that become empty in the index use continuation section (step S29).
- FIG. 18 is a flowchart showing a synchronization process with a video stream.
- the current PTS is a variable indicating the current playback time point, and automatically increases as the video stream playback progresses.
- Step S31 is an event establishment waiting loop that waits for the establishment of an event that the current PTS has reached In_Time of any index use continuation section. It is determined whether or not the current PTS has reached In_Time of any index use continuation section. If it becomes In_Time (Yes in step S31), a gradation color management table in that index use continuation section is acquired (step S32). The process proceeds to a loop of step S33 to step S36.
- This loop determines whether or not the current PTS is the start time of the character string display instruction information i (step S33), and if it is the start time, obtains the display update information i of the character string display instruction information i. (Step S34)
- the gradation color rendering process is performed (Step S35), and it is determined whether or not the current PTS has reached the Out_Time of the index use continuation section (Step S36), and the process of returning to Step S33 is repeated. is there. If it is Out_Time of the index use continuation section, it is determined whether or not the reproduction is finished (step S37), and the process returns to step S31.
- FIG. 19 is a flowchart showing a processing procedure of gradation color rendering processing.
- the color lookup table control unit 23 sets the character color index of the drawing update information in the character string display instruction information, the background color index, and the color information of the gradation color index of the gradation color management table in the color conversion unit 11 (S41). ) Clear display areas other than the display area in which the drawing update flag is set to “do not update” (S42).
- the drawing control unit 24 acquires the gradation color index assigned to the set of the character color index and the background color index (S43).
- the drawing control unit 24 instructs the drawing unit 25 to draw a gradation character using the indices of the character color, background color, and gradation color (S44).
- the drawing unit 25 draws the background and the character string in the frame memory.
- the font data is acquired from the font data storage unit.
- a gradation character image is generated by developing the font data, and the gradation character is drawn using the gradation color index designated by the drawing control unit 24 (S45).
- the present embodiment it is possible to display gradation characters using the empty index of the color lookup table by analyzing the character string display instruction information in advance. Defects that can occur when pre-analyzing all character string display instruction information, that is, the problem that the time until the first character string is displayed, the number of indexes and characters used Since the number of combinations of colors and background colors increases, the above-mentioned playback device has the disadvantage that a sufficient index for gradation display cannot be secured. It is solved by dividing by the time when is done. This is because the time until the first display of the character string is shortened by setting the period during which the entire display area is updated as the range of the pre-analysis, and it is not used from the period when the index is used continuously. This is because checking the index increases the number of unused indexes. Thereby, high-speed gradation display using abundant number of colors can be realized.
- the text subtitle decoder performs a pre-analysis on a period in which the index use continues prior to playback of the playlist, but this embodiment does not perform the pre-analysis, and the tone color is real-time. This is assigned to an empty index in the color lookup table. Take it.
- a playback apparatus according to the second embodiment will be described with reference to the drawings.
- FIG. 20 is a configuration diagram showing the preload memory 8, the text subtitle decoder 9, the graphics plane 10, the conversion unit 11, and the font data storage unit 12 in the second embodiment.
- the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the difference between the second embodiment and the first embodiment is that the character string display instruction analysis unit 21, the color look-up table control unit 23, and the drawing control unit 24 have been improved by the second embodiment.
- the pre-analysis unit 22 has been removed. Instead, a normal color management unit 31, a display area management unit 32, a gradation color management unit 33, and a physical index management unit 34 are newly added. (Improvement of character string display instruction analysis unit 21)
- the character string display instruction analysis unit 21 analyzes the character string display instruction information stored in the preload memory 8 and updates the color lookup table described in the color lookup table update instruction information at the time specified by the time information.
- the instruction is passed to the normal color management unit 31, and the drawing update information described in the drawing update instruction information is passed to the drawing control unit 24.
- the normal color management unit 31 has a normal color management table as shown in FIG. 21A, and updates the color information of the index designated by the character string display instruction analysis unit 21.
- the normal color management table holds the relationship between the index and color information and the physical index assigned to it.
- the physical index is efficiently used by being allocated from the physical index management unit 34 only when it is actually used for display.
- FIG. 21A shows an example of a normal color management table.
- the normal color management table has index (0,1,2,3 ...) and color information (( ⁇ 0, r0, g0, b0) ( ⁇ 1, r1, g1, b1) ( ⁇ 2, r2, g2, b2 )]. And the physical index (3, 8, 2, 4) assigned to it.
- the physical index is efficiently used by being assigned to the physical index only when it is actually used for display.
- the display area management unit 32 manages a set of a character color index and a background color index used for each display area using a display area management table as shown in FIG.
- the display area management unit 32 updates the display area management table in FIG. 21B every time the display is updated.
- the display area management table shows a set of character color index (0, 2) and background color index (1, 3) used for each display area (area 1, area 2) in association with each other.
- the tone color management unit 33 acquires index color information from the normal color management unit 31, and uses the index color information to create and manage a tone color management table.
- FIG. 21C is an example of a tone color management table.
- the tone color management table includes a physical index (10, 11, 12) assigned to each combination (0, 1) (2, 3) (4, 5) of the character color index and background color index.
- the color information (( ⁇ 0, r0, g0, b0) ( ⁇ 1, r1, g1, b1) ( ⁇ 2, r2, g2, b2),...) Is included.
- the physical index management unit 34 assigns the physical index only when the combination of the index of the character color and the background color in the drawing update information of the character string display instruction information is actually used for subtitle display in the display area.
- the physical index management unit 34 manages the usage status of the physical index, and acquires / releases the physical index in accordance with the physical index acquisition / release requests from the normal color management unit 31 and the gradation color management unit 33.
- the color lookup table control unit 23 creates a color lookup table describing the correspondence between the physical index and the color information as shown in FIG. 21D from the normal color management table and the gradation color management table, and the color lookup table.
- the setting unit 106 is instructed to update the color lookup table.
- the color look-up table in FIG. 21D includes a physical index (0,1,2,3...) And color information (( ⁇ 0, r0, g0, b0) ( ⁇ 1, r1, g1, b1). ( ⁇ 2, r2, g2, b2)... (Improved points of the drawing control unit 24)
- the drawing control unit 24 instructs the drawing unit 25 to draw in the frame memory in accordance with an instruction from the character string display instruction analysis unit 21.
- a physical index is used when the drawing control unit 24 instructs the drawing unit 25 to perform drawing.
- the character color physical index and the background color physical index are acquired from the normal color management unit 31, and the gradation color physical index is acquired from the gradation color management table.
- the above components are implemented in the playback device by writing an embedded program for executing the processing procedure of the flowchart in FIG. 22 in a programming language instead of the flowchart in FIG. 18 and writing it in the ROM of the playback device. can do.
- FIG. 22 is a flowchart showing a processing procedure of synchronization processing with a video stream in the second embodiment.
- Step S51 is a determination as to whether or not the current PTS has reached the start time of any character string display instruction information. If any character string display instruction information (this character string display instruction information is converted to character string display instruction information). i)), the color lookup table update flag of the character string display instruction information i is checked to determine whether the character string display instruction information causes the color lookup table to be updated (S52). . When the color lookup table update flag is set to “update” (S52: Yes), the color lookup table update information is used to display the color information of the specified index in the normal color management table. Update (S53).
- step S54 it is determined whether or not the updated index is included in the text color index and background color index managed in the gradation color management table. If it is included, the color information of the corresponding gradation color index is calculated, and the color information is updated (S55). If not included, step S55 is skipped.
- the drawing control unit 24 skips steps S53 to S55 and sets the drawing update flag to “not update”. Display areas other than the set display area are cleared (S56).
- the drawing control unit 24 updates the display area management table (S57).
- a physical index is assigned to an index described to be used in the display area management table (step S58).
- the physical index is released for the index that is not described to be used (S59).
- a color lookup table is created from the normal color management table and the gradation color management table and stored in the color conversion unit 11 (S60).
- the drawing control unit 24 instructs the drawing unit 25 to draw a background and a character string.
- drawing a character string drawing of gradation characters using the character color physical index, background color physical index, and gradation color physical index acquired from the gradation color management unit 33 is instructed (S61).
- the drawing unit 25 draws the background and the character string in the frame memory.
- font data is acquired from the font data storage unit 12, and a gradation character image is generated.
- the gradation character is drawn using the gradation color physical index designated by the drawing control unit 24 (S62).
- the relationship between the index specified from the character string display instruction information in the text subtitle stream and the physical index actually specified in the color conversion unit 11 is maintained. Since the index specified from the drawing update information of the character string display instruction information is converted into a physical index and drawing is performed, the index specified from the drawing update information of the character string display instruction information in the text subtitle stream is already assigned to the gradation index. It ’s gone.
- the physical index can be used efficiently by managing the display area and assigning it only when the physical index is used.
- the analysis range of the pre-analysis unit 22 may be a longer section, or all character string display instruction information may be pre-analyzed.
- the number of gradation color indexes in the first embodiment may not be the same for all combinations of character colors and background colors.
- the physical index may be released by releasing a physical index that is not used for display when there are not enough physical indexes.
- the text subtitle stream preferably has only one set of a plurality of style sets applied to each display area and an initial palette.
- a plurality of style sets are defined, and only the style set ID is specified from the character string display instruction information.
- Subtitles are often displayed in the same combination of styles due to their nature. Therefore, the data can be reduced by using the ID as described above.
- the character string display instruction analysis unit 21 detects the index used for the character color from the following description. It is desirable to do.
- This description is a description example of drawing update information for displaying a character string composed of datalength chara # data in a character color by index. Whether data to be defined is a character string [STRING] or a character color [COLOR] is specified by data # type.
- ⁇ Description example >> total_length while (processed_length ⁇ total_length) ⁇ data_type data_length switch (data_type) ⁇ case STRING; [chara_data ⁇ datalength] break; case COLOR; [index]; break; ⁇ ⁇ (Implementation by a single program)
- 15 to 19 and 22 is implemented in the playback apparatus as an embedded program has been described. 19. It is also possible to record a program for executing the processing procedure of FIG. 22 on a computer-readable recording medium and supply it to a playback device as an application program.
- the application program is preferably developed as a Java (TM) application. This is because, in the BD-ROM playback device, it is possible to play a playlist by the Java platform.
- BD-J application An application that can be executed on the platform of a BD-ROM playback device is called a BD-J application.
- the BD-J application is a platform that fully implements Java2 Micro_Edition (J2ME) Personal Basis Profile (PBP 1.0) and Globally Excecutable MHP specification (GEM 1.0.2) for medium package targets. It is a Java (TM) application that is started by the application signaling. The BD-J application instructs the Java TM virtual machine to generate a JMF player instance that reproduces playlist information, thereby starting playlist reproduction.
- a JMF (Java Media Frame work) player instance is actual data generated on a heap memory of a virtual machine based on a JMF player class.
- JMF A "BD: //00001.mpls"; is a method that instructs the Java (TM) virtual machine to generate a player instance that plays a playlist with the file 00001.mpls.
- A.play is a method that commands the JMF player instance to play. Such JMF player instance generation is performed based on the JMF library.
- the WWW server is requested to download the required AV clip for playing the playlist.
- a connection for acquiring an AV clip on the WWW server 102 can be established by using an openConnection method of a Java software library called java.net. If gradation color display is realized by such a BD-J application, even if a program that realizes gradation color display of a text subtitle stream is not installed in the playback device, gradation can be obtained by application supply from the BD-ROM. Color display is possible.
- the text subtitle decoder 9 may be built on a single semiconductor substrate and configured as an integrated circuit such as a system LSI (Large Scale Integrated circuit).
- the system LSI is a package in which a bare chip is mounted on a high-density substrate and packaged.
- a system LSI that includes a plurality of bare chips mounted on a high-density substrate and packaged to give the bare chip an external structure like a single LSI is also included in system LSIs (such systems LSI is called a multichip module.)
- system LSIs are classified into QFP (Quad-Flood Array) and PGA (Pin-Grid Array).
- QFP is a system LSI with pins attached to the four sides of the package.
- the PGA is a system LSI with many pins attached to the entire bottom surface.
- pins serve as an interface with other circuits. Since pins in the system LSI have such an interface role, by connecting other circuits to these pins in the system LSI, the system LSI plays a role as the core of the playback device.
- Such a system LSI can be incorporated in various devices that handle video playback, such as TVs, games, personal computers, and 1Seg mobile phones, as well as playback devices, and can broaden the applications of playback devices.
- the preload memory 8 When mounted as a system LSI, the preload memory 8, the graphics plane 10, the color conversion unit 11, and the font data storage unit 12 may also be packaged in the system LSI. Further, the read buffer 7, the filter 3, the transfer buffer 4, the video decoder 5, the audio decoder 15, the video plane 6, and the synthesis unit 13 may be packaged in one system LSI.
- the system LSI architecture conforms to the Uniphier architecture.
- a system LSI that conforms to the Uniphier architecture consists of the following circuit blocks.
- ⁇ Data parallel processor DPP This is a SIMD type processor in which multiple element processors operate in the same way. By operating the arithmetic units incorporated in each element processor simultaneously with a single instruction, the decoding process for multiple pixels constituting a picture is performed in parallel. Plan
- Instruction parallel processor IPP This is a "Local Memory Controller” consisting of instruction RAM, instruction cache, data RAM, and data cache, "Processing Unit” consisting of instruction fetch unit, decoder, execution unit and register file, and Processing Unit part for parallel execution of multiple applications. It consists of a “Virtual Multi Processor Unit section” to be performed.
- MPU block This is a peripheral interface such as ARM core, external bus interface (Bus Control Unit: BCU), DMA controller, timer, vector interrupt controller, UART, GPIO (General Purpose Input Output), synchronous serial interface, etc. Consists of.
- -Stream I / O block This performs data input / output with drive devices, hard removable media drive devices, and SD memory card drive devices connected to the external bus via the USB interface or ATA Packet interface.
- ⁇ AVI / O block This is composed of audio input / output, video input / output, and OSD controller, and performs data input / output with TV and AV amplifier.
- Memory control block This is a block that realizes reading and writing of the SD-RAM connected via the external bus.
- the internal bus connection part that controls the internal connection between each block, the SD-RAM connected outside the system LSI It consists of an access control unit that transfers data to and from the RAM, and an access schedule unit that adjusts SD-RAM access requests from each block.
- the buses connecting circuit elements, ICs, LSIs, their peripheral circuits, external interfaces, etc. will be defined.
- connection lines, power supply lines, ground lines, clock signal lines, and the like will be defined.
- the circuit diagram is completed while adjusting the operation timing of each component in consideration of the specifications of the LSI, and making adjustments such as ensuring the necessary bandwidth for each component.
- Mounting design refers to where on the board the parts (circuit elements, ICs, and LSIs) on the circuit board created by circuit design are placed, or how the connection lines on the circuit board are placed on the board. This is a board layout creation operation for determining whether to perform wiring.
- the mounting design result is converted into CAM data and output to equipment such as an NC machine tool.
- NC machine tools perform SoC implementation and SiP implementation based on this CAM data.
- SoC (System on chip) mounting is a technology that burns multiple circuits on a single chip.
- SiP (System-in-Package) packaging is a technology that combines multiple chips into one package with resin or the like.
- the playback apparatus is provided with a setting register for storing a flag set and a permission flag.
- the flag set consists of setting flags corresponding to each of the 3-byte language codes defined in IS0639-2 / T.
- Each setting flag has a language capability corresponding to each language code. It shows the setting for each language code whether or not.
- a 3-byte code “ita” indicates Italian
- a 3-byte code “jpn” indicates Japanese.
- the 3-byte code "jav” indicates Javanese. Since the language codes defined in IS0639-2 / T cover 430 languages by means of 3-byte codes in this way, it is possible to determine whether or not the playback device has the language capability corresponding to each language code. It becomes easy.
- Capability for each language code realizes a unique display method in the language corresponding to each language code by changing any one of the arrangement of the character bitmap, the shape of the character bitmap, and the interval between the character bitmaps. Includes abilities.
- Whether or not the second condition described at the beginning of the first embodiment is satisfied is determined according to the language code of the text subtitle stream to be selected among the plurality of setting flags in the flag set. This is done by checking whether it is showing.
- the permission flag indicates whether or not selection of a text subtitle stream that does not satisfy the second condition is permitted.
- the text subtitle stream specified in the playlist information recorded on the recording medium is selected as a text subtitle stream that satisfies the first condition and the third condition.
- the playback device can be used in the industrial field of consumer equipment in that it enables high-quality character string display by gradation display.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
Description
2 読み出しバッファ
3 フィルタ
4 転送バッファ
5 ビデオデコーダ
6 ビデオメモリ
8 プリロードメモリ
9 テキスト字幕デコーダ
10 フレームメモリ
11 カラールックアップテーブル記憶部
12 フォントデータ記憶部
13 合成部
14 転送バッファ
15 オーディオデコーダ
21 文字列表示指示解析部
22 事前解析部
23 カラールックアップテーブル制御部
24 描画制御部
25 描画部
31 通常色管理部
32 表示領域管理部
33 諧調色管理部
34 物理インデックス管理部
先ず、始めに本再生装置の処理の概要を述べる。
文字列表示指示解析部21は、プレイリストの再生に先立ち、インデックスの使用状況の事前解析を行う。事前解析範囲の始点は、文字列表示指示情報のうち、全ての表示領域の描画更新フラグが「更新する」と設定されたもの(これを文字列表示指示情報iという)の開始時刻である。
事前解析部22は、文字列表示指示解析部21から諧調色管理テーブルを作成する旨の指示を受けると、インデックス使用継続区間に属する文字列表示指示情報を取得し、描画処理が始まるまでに、インデックスの使用状況を事前解析して、諧調色管理テーブルを作成する。
階調数N=(2のn乗-M)/文字色及び背景色の組合せ数
図11は、諧調数がどのように決定されるかを模式的に示す図である。
(256-30)/14=16.14
となる。この値を最大諧調インデックス数とすると4ビットの場合に必要な諧調インデックス数が、4以上であるため、諧調インデックス数は14となる。
(カラールックアップテーブル制御部23)
カラールックアップテーブル制御部23は、諧調色管理テーブルを取得し、文字列表示指示解析部21からカラールックアップテーブル更新情報を取得する。その後、カラールックアップテーブル更新指示情報と諧調色管理テーブルをもとにカラールックアップテーブルを作成する。図10(c)は、文字色インデックス、背景色インデックスの使用状況が図10(a)である場合のカラールックアップテーブルの使用状況を示している。カラールックアップテーブルは、インデックスと色情報とから構成されている。
文字色(αa、Ra、Ga、Ba)
背景色(αb、Rb、Gb、Bb)
とすると、諧調色は以下のように計算される。
Gb+(Ga-Gb)×n/(N-1)、Bb+(Ba-Bb)×n/(N-1))
(n=1~N-2)
その後、カラールックアップテーブル制御部23から渡されたカラールックアップテーブルが、色変換部11に設定される。図10(d)は、階調色インデックスに対して色情報が設定されたカラールックアップテーブルを示す図である。図(c)と比較すると、"16"、"17"、"18"、"19"のインデックスに、それぞれ(r16,g16,b16)、(r17,g17,b17)、(r18,g18,b18)、(r19,g19,b19)の色情報が割り当てられていることがわかる。これら"16"、"17"、"18"、"19"のインデックスを、ピクセル値として使用して、ピクセルコードの2次元パターンを作成すれば、階調色をグラフィクスプレーン10に得ることができる。
描画制御部24は文字列表示指示解析部21からの指示に従い描画部25に対してフレームメモリへの描画を指示する。文字列表示指示解析部21からは描画更新情報が渡されるが、この中には諧調色インデックスは含まれていない。諧調色インデックスは階調色管理テーブルから取得取得する。つまり文字列表示指示情報の描画更新情報で使用されている文字色インデックスと背景色インデックスとの組み合わせに対する階調色インデックスを諧調色管理テーブルから取得して、取得した諧調色インデックスを用いた階調文字のの描画を描画部25に指示する。
描画部25は、描画制御部24の指示に従って、背景、文字列を指定した位置、サイズ、指定したインデックスでグラフィクスプレーン10に描画する。各々の文字画像はフォントデータに格納されているアウトライン情報から生成され、指定した諧調数で諧調文字画像を生成する。描画部25は描画制御部24から渡された諧調インデックスを用いて諧調文字の描画を行う。なお、フォントデータはフォントデータ記憶部12から取得する。
図16は、インデックス使用継続区間の解析手順を示すフローチャートである。変数iは、文字列表示指示情報を指示する変数であり、変数kは、インデックス使用継続区間を指示する変数である。In_Timeは、インデックス使用継続区間の始点を表す変数、Out_Timeは、インデックス使用継続区間の終点を表す変数である。
ステップS11~ステップS17は、変数iを1で初期化し、変数kを0で初期化して(S11)、ステップS12~ステップS17の処理を繰り返すループ構造になっている。ループの終了条件は、ステップS16においてiが最大数であると判定されることであり、iが最大数でない限り、ステップS17において変数iはインクリメントされる。
図19は、階調色描画処理の処理手順を示すフローチャートである。
第1実施形態においてテキスト字幕デコーダは、プレイリストの再生に先立ち、インデックス使用が継続する期間について事前解析を行ったが、本実施形態は、かかる事前解析を行わず、階調色をリアルタイムに、カラールックアップテーブルの空きのインデックスに割り当てるものである。かかる。以下、第2実施形態における再生装置について、図面を参照しながら説明する。
(文字列表示指示解析部21の改良点)
文字列表示指示解析部21は、プリロードメモリ8に記憶されている文字列表示指示情報を解析し、時間情報で指定された時刻にカラールックアップテーブル更新指示情報に記述されるカラールックアップテーブル更新指示を通常色管理部31に渡し、描画更新指示情報に記述される描画更新情報を描画制御部24に渡す。
(通常色管理部31の新規追加)
通常色管理部31は、図21(a)のような通常色管理テーブルを持ち、文字列表示指示解析部21から指定されたインデックスの色情報を更新する。通常色管理テーブルはインデックスと色情報との関係と、それに割り当てられる物理インデックスとの関係を保持する。物理インデックスは実際に表示に用いられているときにのみ物理インデックス管理部34から割り当てることにより、効率よく使用する。
(表示領域管理部32の新規追加)
表示領域管理部32は、表示領域ごとに使用している文字色インデックス、背景色インデックスの組を図21(b)のような表示領域管理テーブルで管理する。表示領域管理部32は、図21(b)における表示領域管理テーブルを、表示が更新されるたびに更新する。表示領域管理テーブルは、表示領域(領域1,領域2)ごとに使用している文字色インデックス(0,2)、背景色インデックス(1,3)の組を対応付けて示す。
(諧調色管理部33の新規追加)
諧調色管理部33は、通常色管理部31からインデックスの色情報を取得し、このインデックスの色情報を用いて、諧調色管理テーブルを作成し、管理する。図21(c)は、諧調色管理テーブルの一例である。諧調色管理テーブルは、文字色インデックスと背景色インデックスの組合せ(0,1)(2,3)(4,5)ごとにその組み合わせに対して割り当てられた物理インデックス(10,11,12)とその色情報((α0,r0,g0,b0)(α1,r1,g1,b1)(α2,r2,g2,b2)・・・・)とで構成されている。物理インデックスは、文字列表示指示情報の描画更新情報における文字色及び背景色のインデックスの組合せが、実際に表示領域における字幕表示に用いられているときのみ物理インデックス管理部34によって割り当てられる。
(物理インデックス管理部34の新規追加)
物理インデックス管理部34は、物理インデックスの使用状況を管理しており、通常色管理部31、諧調色管理部33からの物理インデックスの獲得・開放要求に合わせて物理インデックスの獲得・開放を行う。
(カラールックアップテーブル制御部23の改良点)
カラールックアップテーブル制御部23は通常色管理テーブル、諧調色管理テーブルから図21(d)のような物理インデックスと色情報との対応関係を記述したカラールックアップテーブルを作成し、カラールックアップテーブル設定部106に対してカラールックアップテーブルの更新を指示する。図21(d)におけるカラールックアップテーブルは、物理インデックス(0,1,2,3・・・・)と、色情報((α0,r0,g0,b0)(α1,r1,g1,b1)(α2,r2,g2,b2)・・・・)との対応付けを示す。
(描画制御部24の改良点)
描画制御部24は文字列表示指示解析部21からの指示に従い、描画部25に対してフレームメモリへの描画を指示する。描画制御部24が描画部25に対して描画を指示するときに用いるのは物理インデックスである。文字色物理インデックス、背景色物理インデックスは通常色管理部31から取得し、諧調色物理インデックスは諧調色管理テーブルから取得する。
以上、本願の出願時点において、出願人が知り得る最良の実施形態について説明したが、以下に示す技術的トピックについては、更なる改良や変更実施を加えることができる。各実施形態に示した通り実施するか、これらの改良・変更を施すか否かは、何れも任意的であり、実施する者の主観によることは留意されたい。
第1実施形態で事前解析部22の解析範囲はより長い区間としてもよく、全ての文字列表示指示情報を事前解析してもよい。
諧調色のインデックスと色情報とが等間隔に割り当てられる必要がないのであれば、2のn乗と関係のない値を閾値としてもよい。
第1実施の形態における諧調色インデックスの個数は全ての文字色及び背景色の組み合わせで同じにしなくてもよい。
第2実施形態で物理インデックスの解放は、物理インデックスが足りなくなった時点で表示に用いていない物理インデックスを解放するような形態であってもよい。
テキスト字幕ストリームは、表示領域ごとに適用される複数のスタイルセットと、初期パレットとの組みを1つのみ有していることが望ましい。そして複数のスタイルセットを定義しておいて、文字列表示指示情報からはスタイルセットのIDのみを指定する。字幕は、その性質上同じ組み合わせのスタイルで表示されることが多い。そのため、上述したようなIDの利用により、のデータを小さくすることがことできる。
描画更新情報におけるテキストコード及び文字色の指定は、プログラミング言語による記述で実現されているので、文字列表示指示解析部21は、以下のような記述から、文字色に使用されているインデックスを検出するのが望ましい。
<<記述例>>
total_length
while(processed_length < total_length){
data_type
data_length
switch(data_type){
case STRING;
[chara_data×datalength]
break;
case COLOR;
[index];
break;
}
}
(プログラム単体での実施)
上記第1、第2実施形態の再生装置において、図15~図19、図22の処理手順を実行するプログラムは、組込みプログラムとして再生装置に実装する実装例を説明したが、これら図15~図19、図22の処理手順を実行するプログラムをコンピュータ読取可能な記録媒体に記録して、アプリケーションプログラムとして再生装置に供給することも可能となる。これらの処理手順をコンピュータに実行させるプログラムをアプリケーションプログラムとして実施する場合、かかるアプリケーションプログラムは、Java(TM)アプリケーションとして開発することが望ましい。何故なら、BD-ROM再生装置においては、Javaプラットフォームによってプレイリストの再生が可能になるからである。
テキスト字幕デコーダ9を単一の半導体基板に作り込んで、システムLSI(Large Scale Integrated circuit)等の集積回路として構成してもよい。
システムLSIとは、高密度基板上にベアチップを実装し、パッケージングしたものをいう。複数個のベアチップを高密度基板上に実装し、パッケージングすることにより、あたかも1つのLSIのような外形構造を複数個のベアチップに持たせたものも、システムLSIに含まれる(このようなシステムLSIは、マルチチップモジュールと呼ばれる。)。
これは、複数の要素プロセッサが同一動作するSIMD型プロセッサであり、各要素プロセッサに内蔵されている演算器を、1つの命令で同時動作させることで、ピクチャを構成する複数画素に対するデコード処理の並列化を図る。
これは、命令RAM、命令キャッシュ、データRAM、データキャッシュからなる「Local Memory Controller」、命令フェッチ部、デコーダ、実行ユニット、レジスタファイルからなる「Processing Unit部」、複数アプリケーションの並列実行をProcessing Unit部に行わせる「Virtual Multi Processor Unit部」で構成される。
これは、ARMコア、外部バスインターフェイス(Bus Control Unit:BCU)、DMAコントローラ、タイマー、ベクタ割込コントローラといった周辺回路、UART、GPIO(General Purpose Input Output)、同期シリアルインターフェイスなどの周辺インターフェイスで構成される。
これは、USBインターフェイスやATA Packetインターフェイスを介して、外部バス上に接続されたドライブ装置、ハードリムーバブルメディアドライブ装置、SDメモリカードドライブ装置とのデータ入出力を行う。
これは、オーディオ入出力、ビデオ入出力、OSDコントローラで構成され、テレビ、AVアンプとのデータ入出力を行う。
これは、外部バスを介して接続されたSD-RAMの読み書きを実現するブロックであり、各ブロック間の内部接続を制御する内部バス接続部、システムLSI外部に接続されたSD-RAMとのデータ転送を行うアクセス制御部、各ブロックからのSD-RAMのアクセス要求を調整するアクセススケジュール部からなる。
テキスト字幕ストリームの選択を好適に行うため、再生装置には、フラグセットと、許可フラグとを格納するセッティングレジスタを設けるのが望ましい。
Claims (11)
- ビデオストリームと、字幕ストリームとの同期再生を実行する再生装置であって、
ビデオストリームをデコードするビデオデコーダと、
字幕ストリームをデコードして、字幕画像を得る字幕デコーダと、
カラールックアップテーブルを用いることにより、字幕画像の階調表示を実行する色変換部とを備え、
カラールックアップテーブルは、複数のインデックスと、各インデックスに対応付けられた色情報とによって構成され、
前記字幕デコーダは、字幕画像の階調表示を色変換部に実行させるにあたって、
ビデオストリームの時間軸のうち、字幕表示におけるインデックス使用が継続する期間を事前に解析しておき、当該継続期間中に字幕画像の文字色及び背景色に使用される使用済みインデックスを除く空きのインデックスに、階調色の色情報を割り当てる
ことを特徴とする再生装置。 - 前記字幕ストリームは、複数の文字列表示指示情報を含み、
各文字列表示指示情報は、ビデオストリームにおける現在の再生時点が文字表示の開始時刻になった際、再生装置に文字表示を指示する情報であり、文字表示の開始時刻及び終了時刻を示す情報と、表示画面において字幕表示に用いるべき、表示領域の個数を指定する領域数情報と、各表示領域において表示されるべき文字を更新するか否かを示す描画更新フラグとを含み、
前記インデックス使用継続区間は、文字列表示指示情報iの開始時刻から、文字列表示指示情報jの終了時刻までの期間であり、
前記文字列表示指示情報iは、領域数情報によって個数が指定された全ての表示領域における描画更新フラグが"更新する"に設定されている文字列表示指示情報であり、
前記文字列表示指示情報jは、文字列表示指示情報iに後続する文字列表示指示情報であって、領域数情報によって個数が指定された全ての表示領域における描画更新フラグが"更新する"に設定されている文字列表示指示情報の直前に位置する文字列表示指示情報である
ことを特徴とする請求項1記載の再生装置。 - 前記文字列表示指示情報は、表示時において文字色及び背景色の表示に用いるべきインデックスを示すインデックス指示情報を備え、
前記使用済みインデックスとは、
文字列表示指示情報iから文字列表示指示情報jまでの何れかの文字列表示指示情報のインデックス指示情報によって文字色及び背景色が割り当てられるインデックスである
ことを特徴とする請求項2記載の再生装置。 - あるインデックス使用継続区間における使用済みインデックス数をMとし、インデックスのビット幅をnとした場合、
前記インデックス使用継続区間において階調色表示に用いられる階調色の階調数Nは、以下の計算式
階調数N=(2のn乗-M)/文字色及び背景色の組合せ数
によって算出されることを特徴とする請求項3記載の再生装置。 - インデックス使用継続区間における文字色の色情報を(Aa、Ba、Ca、Da)とし、
同じインデックス使用継続区間における背景色の色情報を(Ab、Bb、Cb、Db)とすると、
1からN-2までの値をとるインデックスnにて指定される階調色nの色情報は、以下の計算式
諧調色n(Ab+(Aa-Ab)×n/(N-1)、
Bb+(Ba-Bb)×n/(N-1)、
Cb+(Ca-Cb)×n/(N-1)、
Db+(Da-Db)×n/(N-1))
によって算出されることを特徴とする請求項1記載の再生装置。 - 前記字幕デコーダは、
インデックス使用継続期間における文字色及背景色の組合せに対応付けて、階調色を管理するための諧調色管理テーブルを作成する事前解析部と、
前記諧調色管理テーブルの作成が終わった後に、インデックス値と色情報との対応関係を保持したカラールックアップテーブルと、前記諧調色管理テーブルとに対する更新を行うカラールックアップテーブル制御部と、
前記諧調色管理テーブルを用いて、文字をフレームメモリ内に描画する描画部とを備え、
色変換部による表示の対象となる字幕画像は、描画部によってフレームメモリ内に描画された文字から構成される
ことを特徴とする請求項1記載の再生装置。 - 前記文字列表示指示情報は、ビデオストリームにおける現在の再生時点が文字表示の開始時刻になった際、色変換部におけるカラールックアップテーブルの更新を、再生装置に命じるカラールックアップテーブル更新情報を含み、
前記カラールックアップテーブル制御部は、
字幕ストリームに含まれる複数の文字列表示指示情報のうち、ビデオストリームにおける現在の再生時点に相当するもののカラールックアップテーブル更新情報に基づいて、諧調色管理テーブルと、色変換部におけるカラールックアップテーブルとを更新し、
色変換部が色変換に用いるカラールックアップテーブルは、カラールックアップテーブル制御部による更新がなされたカラールックアップテーブルである
ことを特徴とする請求項6記載の再生装置。 - ビデオストリームと、字幕ストリームとの同期再生を実行する再生装置に組込むことができる集積回路であって、
ビデオストリームをデコードするビデオデコーダと、
字幕ストリームをデコードして、字幕画像を得る字幕デコーダと、
カラールックアップテーブルを用いることにより、字幕画像の階調表示を実行する色変換部とを備え、
カラールックアップテーブルは、複数のインデックスと、各インデックスに対応付けられた色情報とによって構成され、
前記字幕デコーダは、字幕画像の階調表示を色変換部に実行させるにあたって、
ビデオストリームの時間軸のうち、字幕表示におけるインデックス使用が継続する期間を事前に解析しておき、当該継続期間中に字幕画像の文字色及び背景色に使用される使用済みインデックスを除く空きのインデックスに、階調色の色情報を割り当てる
ことを特徴とする集積回路。 - ビデオストリームと、字幕ストリームとの同期再生を実行する再生方法であって、
ビデオストリームをデコードするステップと、
字幕ストリームをデコードして、字幕画像を得るステップと、
カラールックアップテーブルを用いることにより、字幕画像の階調表示を実行する色変換ステップとを有し、
カラールックアップテーブルは、複数のインデックスと、各インデックスに対応付けられた色情報とによって構成され、
前記字幕画像を得るステップは、字幕画像の階調表示を色変換ステップに実行させるにあたって、
ビデオストリームの時間軸のうち、字幕表示におけるインデックス使用が継続する期間を事前に解析しておき、当該継続期間中に字幕画像の文字色及び背景色に使用される使用済みインデックスを除く空きのインデックスに、階調色の色情報を割り当てる
ことを特徴とする再生方法。 - ビデオストリームと、字幕ストリームとの同期再生をコンピュータに実行させるプログラムであって、
ビデオストリームをデコードするステップと、
字幕ストリームをデコードして、字幕画像を得るステップと、
カラールックアップテーブルを用いることにより、字幕画像の階調表示を実行する色変換ステップとをコンピュータに実行させ、
カラールックアップテーブルは、複数のインデックスと、各インデックスに対応付けられた色情報とによって構成され、
前記字幕画像を得るステップは、字幕画像の階調表示を色変換ステップに実行させるにあたって、
ビデオストリームの時間軸のうち、字幕表示におけるインデックス使用が継続する期間を事前に解析しておき、当該継続期間中に字幕画像の文字色及び背景色に使用される使用済みインデックスを除く空きのインデックスに、階調色の色情報を割り当てる
ことを特徴とするプログラム。 - 請求項10記載のプログラムが記録されていることを特徴とするコンピュータ読取可能な記録媒体。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/746,844 US8428437B2 (en) | 2008-02-14 | 2009-02-13 | Reproduction device, integrated circuit, reproduction method, program, and computer-readable recording medium |
JP2009553375A JP5140687B2 (ja) | 2008-02-14 | 2009-02-13 | 再生装置、集積回路、再生方法、プログラム、コンピュータ読取可能な記録媒体 |
EP09711480A EP2242263A1 (en) | 2008-02-14 | 2009-02-13 | Reproduction device, integrated circuit, reproduction method, program, and computer-readable recording medium |
CN200980101407.0A CN101904169B (zh) | 2008-02-14 | 2009-02-13 | 再生装置、集成电路、再生方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-032837 | 2008-02-14 | ||
JP2008032837 | 2008-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009101819A1 true WO2009101819A1 (ja) | 2009-08-20 |
Family
ID=40956850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/000579 WO2009101819A1 (ja) | 2008-02-14 | 2009-02-13 | 再生装置、集積回路、再生方法、プログラム、コンピュータ読取可能な記録媒体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8428437B2 (ja) |
EP (1) | EP2242263A1 (ja) |
JP (1) | JP5140687B2 (ja) |
CN (1) | CN101904169B (ja) |
WO (1) | WO2009101819A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102148021B (zh) * | 2011-03-22 | 2012-10-03 | 深圳市茁壮网络股份有限公司 | 一种矢量字库字符的显示方法及显示装置 |
JP5716492B2 (ja) * | 2011-03-30 | 2015-05-13 | ソニー株式会社 | 情報処理装置、情報処理方法およびプログラム |
GB2521606A (en) * | 2013-12-20 | 2015-07-01 | Canon Kk | Method and apparatus for transition encoding in video coding and decoding |
CN111899770B (zh) * | 2014-09-12 | 2022-07-08 | 松下电器(美国)知识产权公司 | 非暂时性计算机可读介质、再现装置以及再现方法 |
CN112513940A (zh) * | 2018-08-06 | 2021-03-16 | 索尼互动娱乐股份有限公司 | α值确定装置、α值确定方法、程序和图像数据的数据结构 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005258139A (ja) | 2004-03-12 | 2005-09-22 | Matsushita Electric Ind Co Ltd | 文字列表示方法 |
JP2005269595A (ja) * | 2004-02-16 | 2005-09-29 | Sony Corp | 再生装置および再生方法、プログラム格納媒体、並びにプログラム |
JP2007027990A (ja) * | 2005-07-13 | 2007-02-01 | Canon Inc | 動画データから字幕を作成する装置及び方法、プログラム、並びに記憶媒体 |
JP2007525904A (ja) * | 2004-02-28 | 2007-09-06 | サムスン エレクトロニクス カンパニー リミテッド | テキスト基盤のサブタイトルストリームを記録した記録媒体、再生装置及びその再生方法 |
JP2007531195A (ja) * | 2004-03-26 | 2007-11-01 | エルジー エレクトロニクス インコーポレーテッド | 記録媒体及びテキストサブタイトルストリームの再生方法及びその装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7092122B2 (en) * | 2000-07-18 | 2006-08-15 | Fuji Photo Film Co., Ltd. | Image processing device and method |
JP4156985B2 (ja) | 2003-06-30 | 2008-09-24 | 株式会社東芝 | 半導体記憶装置 |
JP2005217971A (ja) * | 2004-01-30 | 2005-08-11 | Toshiba Corp | オンスクリーン重畳装置 |
KR20050078907A (ko) * | 2004-02-03 | 2005-08-08 | 엘지전자 주식회사 | 고밀도 광디스크의 서브타이틀 재생방법과 기록재생장치 |
US7529467B2 (en) * | 2004-02-28 | 2009-05-05 | Samsung Electronics Co., Ltd. | Storage medium recording text-based subtitle stream, reproducing apparatus and reproducing method for reproducing text-based subtitle stream recorded on the storage medium |
KR101067778B1 (ko) * | 2004-03-26 | 2011-09-28 | 엘지전자 주식회사 | 기록매체 및 텍스트 서브타이틀 스트림 재생 방법과 장치 |
JP4524582B2 (ja) * | 2004-06-11 | 2010-08-18 | ソニー株式会社 | データ処理装置およびデータ処理方法、プログラムおよびプログラム記録媒体、並びにデータ記録媒体 |
JP4353198B2 (ja) | 2006-03-23 | 2009-10-28 | ダイキン工業株式会社 | 字幕データ処理方法、字幕データ処理プログラム及び字幕データ処理装置 |
US7853887B2 (en) * | 2007-06-26 | 2010-12-14 | Adobe Systems Incorporated | Detection and preview of graphical elements within a graphic |
-
2009
- 2009-02-13 JP JP2009553375A patent/JP5140687B2/ja not_active Expired - Fee Related
- 2009-02-13 CN CN200980101407.0A patent/CN101904169B/zh not_active Expired - Fee Related
- 2009-02-13 WO PCT/JP2009/000579 patent/WO2009101819A1/ja active Application Filing
- 2009-02-13 EP EP09711480A patent/EP2242263A1/en not_active Withdrawn
- 2009-02-13 US US12/746,844 patent/US8428437B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005269595A (ja) * | 2004-02-16 | 2005-09-29 | Sony Corp | 再生装置および再生方法、プログラム格納媒体、並びにプログラム |
JP2007525904A (ja) * | 2004-02-28 | 2007-09-06 | サムスン エレクトロニクス カンパニー リミテッド | テキスト基盤のサブタイトルストリームを記録した記録媒体、再生装置及びその再生方法 |
JP2005258139A (ja) | 2004-03-12 | 2005-09-22 | Matsushita Electric Ind Co Ltd | 文字列表示方法 |
JP2007531195A (ja) * | 2004-03-26 | 2007-11-01 | エルジー エレクトロニクス インコーポレーテッド | 記録媒体及びテキストサブタイトルストリームの再生方法及びその装置 |
JP2007027990A (ja) * | 2005-07-13 | 2007-02-01 | Canon Inc | 動画データから字幕を作成する装置及び方法、プログラム、並びに記憶媒体 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2009101819A1 (ja) | 2011-06-09 |
CN101904169A (zh) | 2010-12-01 |
JP5140687B2 (ja) | 2013-02-06 |
US8428437B2 (en) | 2013-04-23 |
EP2242263A1 (en) | 2010-10-20 |
US20110116763A1 (en) | 2011-05-19 |
CN101904169B (zh) | 2013-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4027402B2 (ja) | 再生装置、記録方法、再生プログラム、再生方法。 | |
KR101036991B1 (ko) | 기록매체, 기록장치, 기록방법, 재생장치 및 재생방법 | |
US9324360B2 (en) | Storage medium having interactive graphic stream and apparatus for reproducing the same | |
JP4518194B2 (ja) | 生成装置、生成方法、及び、プログラム | |
DK2367174T3 (en) | Playback devices, playback method, recording medium, recording devices, recording method for recording a video stream and graphics with afkodningstidsstempel and window information of graphic display | |
JP4510854B2 (ja) | 再生システム | |
JP5065373B2 (ja) | 再生装置、再生方法、システムlsi | |
JPWO2004095837A1 (ja) | 再生装置、プログラム。 | |
JP5140687B2 (ja) | 再生装置、集積回路、再生方法、プログラム、コンピュータ読取可能な記録媒体 | |
KR102212925B1 (ko) | 정보 처리 장치, 정보 기록 매체, 정보 처리 방법, 및 프로그램 | |
JP4577409B2 (ja) | 再生装置、再生方法、プログラム、及び、データ構造 | |
JP6536914B2 (ja) | 再生装置、情報処理方法、およびプログラム | |
US20080239152A1 (en) | Sub picture reproducing device, sub picture reproducing method, and sub picture reproducing program | |
CN114446250A (zh) | 显示设备及其背光控制方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980101407.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09711480 Country of ref document: EP Kind code of ref document: A1 |
|
DPE2 | Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2009553375 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009711480 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12746844 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |