CN1914906A - Text subtitle reproducing method and decoding system for text subtitle - Google Patents
Text subtitle reproducing method and decoding system for text subtitle Download PDFInfo
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- CN1914906A CN1914906A CN 200480041529 CN200480041529A CN1914906A CN 1914906 A CN1914906 A CN 1914906A CN 200480041529 CN200480041529 CN 200480041529 CN 200480041529 A CN200480041529 A CN 200480041529A CN 1914906 A CN1914906 A CN 1914906A
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Abstract
A method for reproducing text subtitle streams and a text subtitle decoding system are disclosed. An entire subtitle text subtitle file designated in a play list file and font files related to the subtitle text subtitle file are initially preloaded into a subtitle preloading buffer and a font preloading buffer, respectively, before starting playback of the playlist file. Thereafter, the playlist file is played back in order to reproduce at least one audio/video (AV) stream file further designated in the playlist file and the preloaded text subtitle file simultaneously.
Description
Technical field
The present invention relates to CD, relate in particular to a kind of method and text subtitle decoder system of the text subtitle stream that reproduces in the CD to be write down.
Background technology
CD is widely used as writing down the optical record medium of mass data.At present, in miscellaneous CD, have such as blue light disk new high density (HD) optical record mediums such as (being hereinafter referred to as " BD ") to be among the exploitation, so that write and store high-resolution video and voice data for a long time.
Current, among the global standard technical specification that is called as the blue light disk (BD) of HD-DVD technology of future generation was being set up, as follow-on optical recording solution, it can have the data that significantly surpass conventional DVD and many other digital devices.Therefore, among the optical reproducing apparatus of application blue light disk (BD) standard is also being developed.Yet, because blue light disk (BD) standard do not finish as yet, so in the process of the complete optical reproducing apparatus of exploitation, many difficulties are arranged.Most particularly, in order to reproduce data effectively from blue light disk (BD), not only relevant with the structured data document of recorded data in the blue light disk (BD) information should and provide by systematization, and the information that is used for forming effectively and manage this data file also should and provide by systematization.Yet, in present blue light disk (BD) standard, because the auxiliary data standard complete unity as yet of caption information particularly, so in full-scale development process, many restrictions are arranged based on the optical reproducing apparatus of blue light disk (BD).And these are limited in and reproduce data flow and caused many problems in the user provides the process of data flow.
Summary of the invention
Therefore, the present invention relates to a kind of method and text subtitle decoder system of reproducing text subtitle stream, they can avoid one or more problems of causing because of the limitation of correlation technique and shortcoming fully.
An object of the present invention is, a kind of method and text subtitle decoder that reproduces text subtitle stream is provided, they can guarantee that the smoothness of text subtitle presents.Additional advantages of the present invention, purpose and feature will be partly articulated hereinafter, and those skilled in the art partly becomes when checking hereinafter obviously, perhaps can know in practice process of the present invention.Purpose of the present invention and other advantage can obtain to realize by specifically noted structure in written description and claims and the accompanying drawing.
For realizing that these purposes are with other advantage and according to purpose of the present invention, such as wide in range description of this paper institute and enforcement, specified full text subtitle file was preloaded in first buffer during a kind of method that is used for reproducing the text subtitle stream that CD writes down comprised the steps: before the playback that begins play list file once with play list file; And the playback play list file is so that reproduce at least one audio/video (AV) stream file specified in this play list file and the text subtitle of this prestrain simultaneously.This method may further include this step: before the playback that begins this play list file, the font file that will be associated with text subtitle file is preloaded in second buffer.
In another aspect of the present invention, during comprising the steps: before the playback of beginning play list file once with this play list file, a kind of method that is used for reproducing the text subtitle stream that CD writes down specifies to be used for a plurality of text subtitle file that multilingual uses and to be preloaded into first buffer; And this playlist of playback is so that reproduce one of at least one audio/video (AV) stream file specified in this play list file and these a plurality of prestrain text subtitle file simultaneously.This method may further include this step: before the playback that begins this play list file, once the font file relevant with a plurality of text subtitle stream files is preloaded in second buffer.
In another aspect of the present invention, a kind of decode system that the text subtitle stream that is write down in the CD is decoded comprises: captions prestrain buffer and text subtitle decoder.Captions prestrain buffer is configured to, prestrain full text subtitle file once before reproducing at least one audio/video (AV) stream file.In play list file, text subtitle file and AV stream file have been specified.Text subtitle decoder is configured to, and the text subtitle that is preloaded in the captions prestrain buffer is decoded.Decode system may further include font prestrain buffer, and it is configured to the font file relevant with text subtitle file of prestrain once before the reproduction of AV stream file.
In another aspect of the present invention, a kind of decode system that the text subtitle stream that is write down in the CD is decoded comprises captions prestrain buffer and text subtitle decoder.Captions prestrain buffer is configured to, and at least one audio/video (AV) stream file specified in reproducing play list file is preloaded into a plurality of text subtitle file before once.In play list file, also specify a plurality of text subtitle file to be used for multilingual and use.Text subtitle decoder is configured to one of a plurality of text subtitle file that are preloaded in the captions prestrain buffer are decoded.This decode system may further include font prestrain buffer, and it is configured to be preloaded into once the font file relevant with a plurality of text subtitle file before the reproduction of AV stream file.
In another aspect of the present invention, a kind of disk player that is used for reproducing the text subtitle stream that CD writes down comprises: the audio decoder parts, and these parts are decoded to the audio stream that is write down in this disc; The video decode parts, it is configured to the video flowing that is write down in this disc is decoded; And caption decoding parts.These caption decoding parts are configured to, and be preloaded into the full text subtitle file once and the text subtitle file that this is preloaded into is decoded before reproducing at least one audio/video (AV) stream file.In play list file, text subtitle file and AV stream file have been specified.The caption decoding parts can comprise: captions prestrain buffer is used for being preloaded into once the full text subtitle file before the reproduction of AV stream file; And text subtitle decoder, be used for the text subtitle file that captions prestrain buffer is preloaded into is decoded.These caption decoding parts may further include font and are preloaded into buffer, and it is configured to be preloaded into once the font file relevant with text subtitle file before the reproduction of AV stream file.
Should be appreciated that, above to general describe and hereinafter detailed description all is exemplary and the usefulness of explaining of the present invention, and be intended to claims are defined the invention provides further understanding.
Description of drawings
Accompanying drawing is included in this so that the present invention is done further understanding, and is comprised and constitute the application's a part, and accompanying drawing shows some embodiment of the present invention and is used for explaining principle of the present invention with specification.In these figure:
Fig. 1 shows according to the present invention the structure of recorded data file in the CD;
Fig. 2 shows the optical disc data storage area;
Fig. 3 shows the example of reproducing process control information;
Fig. 4 A and 4B show the example of text subtitle shown on the display screen;
Fig. 5 shows an example of the method that is used to reproduce text subtitle stream according to the present invention;
Fig. 6 A shows the various playback control informations that are used for one or more play list file to 6C;
Fig. 7 shows according to the present invention the device that AV flows and text subtitle stream is decoded; And
Fig. 8 shows text subtitle decoder shown in Figure 7 42 in more detail.
Embodiment
Now will be in detail with reference to preferred embodiment of the present invention, its example all illustrates in the accompanying drawings.Place as possible in the accompanying drawings, same or analogous parts all can be with identical labels.
In the detailed description below, master data represents to belong to a certain title, and (for example, movie title) audio/video (AV) data are recorded in the CD by the author.Usually, the AV data are write down with the MPEG2 form and usually are called as AV stream or main AV stream.In addition, supplementary data represents to reproduce necessary all other data of this master data, such as text subtitle stream, interactive graphic stream, present graphical stream and supplementary audio streams (for example, being used for browsable slideshow).These supplementary data stream can be come record by MPEG2 form or other any data format.They can flow together multiplexing with AV or exist as independent data file.
The caption information of the image that reproducing represented in captions, and usually represent with predetermined language.For example, select an option so that when watching one of a plurality of captions of supporting various language when the user is watching image on the display screen, corresponding caption information just is presented on the predetermined portions of display screen.When shown caption information was text data, these captions just were called as text subtitle.According to the present invention, a plurality of text subtitle streams of MPEG2 form can be recorded in the CD, and can be used as one or more independently stream files and exist.Each text subtitle stream comprises the text data that is used for text subtitle and reproduces the necessary reproducing control data of text data.Perhaps, have only the single text subtitle stream of MPEG2 form to be recorded in the CD.
Fig. 1 shows according to the present invention the structure of recorded data file in blue light (BD) disc.With reference to Fig. 1, at least one BD catalogue (BDMV) is included in the root (root).Each BD catalogue comprises index file (index.bdmv) and obj ect file (MovieObject.bdmv), and they are used to carry out interaction with one or more users.For example, index file can comprise indexed table, and indexed table comprises the information about a plurality of optional menus and movie title.Each BD catalogue also comprises four file directorys, and they comprise the AV data of wanting reproduced and reproduce the necessary various data of these AV data.
Included file directory is stream catalogue (STREAM), clip information directory (CLIPINF), playlist directory (PLAYLIST) and auxiliary data directory (AUX DATA) in each BD catalogue.The stream catalogue comprises video/audio (AV) stream file with specific format.As shown in Figure 1, AV stream can be MPEG2 transmission packet format and be named as " * .m2ts ".The stream catalogue can also comprise one or more text subtitle stream files, and wherein each text subtitle stream files comprises the text data of the text subtitle that is used for language-specific and the reproduction control information of text data.Subtitle stream files can be together multiplexing with the AV stream in the stream catalogue, and perhaps they can be used as independent file in the stream catalogue and exist.Under latter event, this independently stream file can be named as " * .m2ts " or " * .txtst ".Perhaps, text subtitle stream files can be included in the auxiliary data directory.Next, clip information directory (CLIPINF) comprises clip information file (for example, 01000.clpi as shown in Figure 1 and 02000.clpi), and this clip information file corresponds respectively to included stream file in this stream catalogue.Each clip information file comprises the attribute and the timing information of corresponding stream file, and wherein this timing information comprises map information, and this map information maps with source packet number (SPN) by using the entrance mapping that express time is stabbed (PTS).In industrial standard, each all is designated as a montage to stream file and corresponding clip information thereof.For example, included 01000.clpi comprises attribute and the timing information of 01000.m2ts included among the STREAM among the CLIPINF, and 01000.clpi and montage of 01000.m2ts formation.
Refer again to Fig. 1, playlist directory (PLAYLIST) comprises one or more play list file (* .mpls), wherein each play list file comprises at least one broadcast item, plays the recovery time that item is used for specifying at least one main AV montage and this main AV montage.More particularly, play the information that item comprises the start and end time (" in-time goes into-time " and " out-time goes out-time ") that is used to specify main AV montage reproduction, this main AV montage can be specified by this broadcast interior Clip_Information_File_Name.Therefore, play list file represents to be used for the basic reproduction control information of one or more main AV montages.In addition, play list file can also comprise son broadcast item, and it is the basic reproduction control information of supplementary data, such as text subtitle stream files.Group is play item and is included in the play list file when reproducing one or more subtitle stream files, son play item usually with play a synchronization.On the other hand, group is play when being used to reproduce browsable slideshow, its may with play a synchronization.According to the present invention, son is play a reproduction process of control text subtitle stream, and this will be described in detail hereinafter.
Auxiliary data directory (AUX DATA) can comprise additional data flow, such as font file (aaaaa.font shown in Figure 1), pop-up menu file (not shown) and click sound (Sound.bdmv) data file.
Fig. 2 shows the optical disc data storage area, has wherein write down data file shown in Figure 1.As shown in the drawing, this disc comprises: file system information area, and it has occupied the innermost part of this disc volume; The stream zone, it has occupied the outermost part of this disc volume; And database area, between file system information area and stream zone.In file system information area, write down the system information that is used to manage entire data files.Next, AV stream and one or more text subtitle stream are recorded in the stream zone in advance.General file, play list file and clip information file are recorded in the database area of disc volume in advance.As mentioned above, general file comprises index file and obj ect file, and play list file and clip information file comprise and be used for reproducing AV stream and the text subtitle stream information necessary that writes down in the stream zone.The user can select specific playback mode, and can reproduce advocating peace of wanting with selected playback mode by institute's canned data in use database area and/or the stream zone and replenish stream.
Fig. 3 shows an example of the reproduction control information that is used to reproduce main AV montage and text subtitle clip according to the present invention.Reproduction process with title of main AV montage and text subtitle clip can be controlled by at least one play list file.More particularly, the reproduction process of the one or more main AV montage of a certain title is controlled by at least one included in each play list file broadcast item.The reproduction process of main AV montage controlling by single broadcast like that shown in can image pattern 3, or can play by more than one and control.In addition, the reproduction process of one or more text subtitle clip is controlled by son broadcast item included in each play list file.Although not shown among Fig. 3, the reproduction process that is used for the audio clips of browsable slideshow and/or contains the montage of interactive graphic stream can be play by the included other son of play list file and control.
Independently text subtitle clip is supporting various language can more than one, and the reproduction process of this text subtitle clip is play by single son and controlled.Necessary font file is appointment in the clip information file of text subtitle clip when reproducing text subtitle clip.According to the present invention, before carrying out play list file, support that single font file of planting one or more text subtitle stream files of subtitle language or multiple subtitle language and being associated can be written in the buffer respectively in advance.Can be described in more detail this subsequently.
Fig. 4 A and 4B show the example of text subtitle shown on the display screen.What the text of the captions shown in Fig. 4 A was used is Korean, and the text of the captions shown in Fig. 4 B uses is English.In order to support bilingual, in CD, record two kinds of independently text subtitle file.
Fig. 5 shows an example of the method that is used to reproduce one or more text subtitle stream files according to the present invention.As mentioned above, play list file is being controlled the reproduction process of one or more AV montages and text subtitle clip, and wherein each main AV montage comprises main AV stream file and corresponding clip information file.The reproduction process of main AV montage is play item by included at least one in the play list file and is controlled, and the reproduction process of text subtitle clip is controlled by son broadcast item included in the play list file.Play and son each in playing all comprises the information that is used to indicate the start and end time of reproducing respective clip.
In one aspect of the invention, before the playback of beginning play list file, once specified full text subtitle file in the play list file of single kind language application is preloaded into respectively in first buffer and second buffer with relevant font file, makes and to guarantee that the smoothness of text subtitle presents.In other words, in play list file specified at least one AV stream file reproduced before, whole text subtitle file is preloaded in the buffer with relevant font file.After text subtitle file was preloaded in the buffer all, this play list file of playback was so that the AV stream specified in the play list file and the text subtitle file of this prestrain are reproduced in beginning simultaneously.
In another aspect of the present invention, text subtitle before the playback of beginning play list file, once a plurality of text subtitle stream files (wherein the designated multilingual that is used for of text subtitle file is used) is preloaded into first buffer and second buffer respectively with relevant font file, so that can present glibly when guaranteeing that the user is switched in various subtitle languages.In this case, the size of first and second buffers should be enough big so that all text subtitle stream files font files relevant with all of disposable storage.If text subtitle stream files and font file are not preloaded at once in the buffer, all should from CD, read these files when then the user is switched each time in a plurality of text subtitle streams, and this possibly can't guarantee that the smoothness of text subtitle presents.
Usually, the size of each text subtitle file may be limited.For example, suppose that 2000 text subtitles are used for a film altogether, 2 styles of writing originally are used for each text subtitle, and 30 characters are used for each style of writing originally, and 2 bytes are used for each character, and then single size of planting the necessary text data of text subtitle in the language is about 240 kilobytes.Further the style information of supposition text subtitle is about 240 kilobytes, and then total size of text subtitle stream files is about 480 kilobytes.Therefore, the size of each text subtitle file may be limited, makes it be less than or equal to 0.5 Mbytes.
In order to be preloaded into single text subtitle file once, the size of first buffer should be more than or equal to the size of this subtitle file.For example, suppose that the size of this subtitle file is about 480 kilobytes, then the size of first buffer can be more than or equal to 0.5 Mbytes.On the other hand, in order to be preloaded into a plurality of text subtitle file once, the size of first buffer should be more than or equal to the combined size of these subtitle files.For example, suppose that the size of each subtitle file is about 480 kilobytes and always has 3 subtitle files (Korean, English and Japanese), then the size of first buffer should be greater than 1.5 Mbytes.
Back, before carrying out corresponding play list file, one or more text subtitle stream files are preloaded into respectively in first and second buffers with relevant font file with reference to Fig. 5.For example, carrying out No. 2 playlist, all text subtitle stream files are preloaded in first buffer with before reproducing No. 2 main AV montage.
Fig. 6 A shows the various playback control informations that are used for one or more play list file according to the present invention to 6C.Movie objects represents to be used to reproduce one group of navigation command of user-selected title.With reference to Fig. 6 A, the movie objects of a certain title is being controlled the reproduction process of play list file.This title can be selected with the indexed table (index.table) of user interaction by included being used in the index file (index.bdmv).When this play list file of playback (execution), reproduce this main AV stream by playing item, and play item by son like that as shown in Figure 6A and reproduce text subtitle stream and relevant font information.According to the present invention, before the playback play list file, be preloaded into one or more text subtitle stream files and relevant font file once, present with the smoothness of guaranteeing text subtitle.
Next, with reference to Fig. 6 B, the movie objects of a certain title is being controlled the reproduction process of a plurality of play list file.For example, play an one or more text subtitle stream files of being controlled by the son of No. 1 playlist and be preloaded in advance in the buffer, and carry out playlist afterwards No. 1 with relevant font file.The term of execution of No. 1 playlist or afterwards, play an one or more text subtitle stream files of being controlled by the son of No. 2 playlist and can be preloaded in advance in the buffer, and can carry out playlist after this No. 2 with relevant font file.
With reference to Fig. 6 C, a plurality of movie objects of a plurality of titles are being controlled the reproduction process of a plurality of group of playlist files respectively.When the user selects one of a plurality of titles, controlling the reproduction process of the respective sets of play list file with the corresponding movie objects of selected title.Before reproducing each play list file, the specified one or more text subtitle stream files of each play list file are preloaded in the buffer with relevant font file.When the user makes a change the request of title by indexed table, controlling the reproduction process of corresponding group of playlist files with the corresponding movie objects of the title of new selection.Similar is that before each play list file was reproduced, one or more text subtitle stream files specified in each play list file were preloaded in the buffer with relevant font file.
As mentioned above, feature of the present invention is as follows.At first, included son is play the reproduction process that item is being controlled one or more text subtitle streams in the play list file.The second, full text subtitle stream files or a plurality of text subtitle stream files specified in the play list file are preloaded in the buffer with relevant font file, present to guarantee the smoothness of text subtitle on display screen.
Fig. 7 shows according to the present invention the device that AV flows and text subtitle stream is decoded.This device comprises: packet identifier (PID) filter 5 is used for based on the packet identifier of the stream of being imported the stream of being imported being separated into video flowing, audio stream, graphical stream and text subtitle stream; Video decode parts 20 are used to reproduce video flowing; Audio decoder parts 10 are used to reproduce audio stream; Graphic decoder parts 30 are used for rendering graphical stream; And text subtitle decoder parts 40, be used to reproduce text subtitle stream.
As shown in Figure 7, text subtitle stream can be extracted out from CD, and perhaps they can be imported from other external source.Because of this reason, this device comprises switch 6, is used for selecting the input data source.Therefore, if the text subtitle stream of mpeg format extracts from CD, then switch 6 selects to be connected to the data wire A of pid filter 5.On the other hand, if they are to import by other external source, then switch 6 selects to be connected to the data wire B of this external source.Video decode parts 20, audio decoder parts 10, graphic decoder parts 30 comprise transmission buffer 21,11 and 31 respectively, so that the data flow of the pre-sizing that storage will be decoded.Video plane 23 and graphics plane 33 are included in respectively in video decode parts 20 and the graphic decoder parts 30, so that be displayable image with decoded signal transition.Graphic decoder parts 30 comprise color look up table (CLUT) 34, are used to control the color and the transparency levels of displayable image.
When text subtitle decoder parts 40 received one or more text subtitle stream from switch 6, all these streams all were preloaded in the captions prestrain buffer (SPB) 41 at first once.The typical sizes of the text subtitle stream files of phantom order kind language is about 0.5 Mbytes, then should determine the size of captions prestrain buffer 41 based on the sum of text subtitle stream files.For example, text subtitle can present glibly when switching in supporting macaronic subtitle stream files in order to ensure the user, and the size of captions prestrain buffer 41 should be more than or equal to 1 Mbytes.The size of captions prestrain buffer 41 should be enough big, so that be preloaded into all essential text subtitle stream files once.
In addition, text subtitle decoder parts 40 also comprise font prestrain buffer (FPB) 410, are used for storing all included related font files of auxiliary data directory shown in Figure 1.The size of font prestrain buffer 410 can be among the scope of 2 to 4 Mbytes.Usually, need the size of about 4 Mbytes to be used to store all Chinese, Japanese and Korean (CJK) font file, and the size of about 2 Mbytes usually enough can be used for supporting other non-CJK font file greatly.Similar is that the size of font prestrain buffer 410 should be enough big so that be preloaded into all essential font files once, supports the smoothness of the text subtitle of one or more language to present with assurance.Because be preloaded into all text subtitle stream files and relevant font file, the extraction of the data of this prestrain and use can realize in very simple mode.In addition, the control of their prestrain buffers 41 and font prestrain buffer 410 can be very simple because of identical reason.
Text subtitle decoder parts 40 also comprise: text subtitle decoder 42 is used for one or more text subtitle streams of being stored in the captions prestrain buffer 41 are decoded; Graphics plane 43 is used for converting decoded caption stream to displayable image; And color look up table (CLUT) 44, be used for the color and the transparency levels of the image after the control transformation.
The image sets that included image overlay parts 50 are exported video decode parts 20, graphic decoder parts 30 and text subtitle decoder parts 40 in the device shown in Figure 7 altogether.Image after these combinations is displayed on the screen.The video image that the video plane 23 of video decode parts 20 is exported is as the background of display screen and show that the image that graphic decoder parts 30 and/or text subtitle decoder parts 40 are exported is superimposed on the shown video image.For example, if the output image of graphic decoder parts 30 is interactive graphic images, then the text subtitle images exported of text subtitle decoder parts 40 is added on the video image by first adder 52 at first.Afterwards, this interactive graphic images further is added to by second adder 53 and is superimposed with on the image of captions.
Device shown in Figure 7 also comprises: system decoder 4, the transport stream (for example, mpeg transport stream) that is used to decode and is imported; With microprocessor 3, be used to control the operating process that this installs all said modules.
Now will be in detail with reference to the method that is used to reproduce text subtitle stream according to the present invention.When Disc player was preloaded into a CD, its example illustrated in Fig. 7, reproduced that the recorded data information necessary is extracted and stores in the memory (not shown) from this disc at first on this disc.When the user selects the specific title relevant with a certain playlist, at least one specified in this play list file complete (whole) text subtitle stream files is initially preloaded in the captions prestrain buffer 41, and the font file relevant with this subtitle stream files is preloaded in the font prestrain buffer 410.
For example, when the user selected a certain title relevant with playlist shown in Figure 3, the text subtitle file that is used for No. 1 text subtitle clip (Korean) and No. 2 text subtitle clip (English) was initially preloaded into this subtitle preload and goes into buffer 41.In addition, relevant with text subtitle file font file (may specify to some extent this in the clip information file of text subtitle clip) is preloaded in the font prestrain buffer 410.Afterwards, begun the playback of this playlist.During the playback of this playlist, the AV flow point of No. 1 and No. 2 main AV montage is not decoded by audio decoder parts 10 and video decode parts 20, and one of selected prestrain text subtitle stream is decoded by text subtitle decoder 42.Then, decoded text subtitle images is added on the decoded main video image, and whole images all is presented on the display screen.
Fig. 8 shows text subtitle decoder shown in Figure 7 42 in more detail.Text subtitle decoder 42 performed decode procedures comprise parsing, describe and composite steps.In analyzing step, the resolved one-tenth composite information of institute's stored text caption stream, delineation information and dialog text in the captions prestrain buffer (SPB) 41.Conversational guidance is shown in all shown text subtitles in the defined predetermined amount of time of performance timestamp (PTS).In describing step, the dialog text after will resolving with delineation information is depicted data bitmap as, and this delineation information represents to describe the necessary style information of this dialog text.At last, in composite steps, according to this composite information (temporal informations of this information representation videotex captions in display screen), the text data of describing is added in the graphics plane (GP) 43.
With reference to Fig. 8, text subtitle processor 421 included in the text subtitle decoder 42 resolves to compound the subtitle stream files of being stored in the captions prestrain buffer 41 and delineation information and dialog text.Compound and delineation information then is stored in the dialogue composite buffering device (DCB) 425, and dialog text is stored in the dialog buffer (DB) 422.
Next, under the control of dialogue performance controller 426, text renderer 423 is depicted the dialog text of being stored in the dialog buffer 422 as data bitmap.Describe function in order to carry out this, text renderer 423 receives the character font data relevant with dialog text from font prestrain buffer 410, from dialogue performance controller 426, receive delineation information and inline style information, and depict this dialog text as data bitmap with this delineation information and inline style information (it can be applicable to each text string of dialog text).Afterwards, the text data of being described then is stored in the bitmap object buffer (BOB) 424 as bitmap object.
Finally, according to the composite information that dialogue performance controller 426 provides, the bitmap object of being stored in the bitmap object buffer 424 is transferred (interpolation) to graphics plane 43.Color look up table 44 is used color and the transparency level that included palette information is regulated the output of graphics plane 43 in this composite information.
Commercial Application
It will be apparent to those skilled in the art that under the situation that does not deviate from the spirit or scope of the present invention and can make various modifications and variations the present invention.Therefore, the present invention is intended to contain these modifications and variations of the present invention, as long as they drop within the scope of appending claims and equivalence thereof.
Claims (32)
1. method that is used for reproducing the text subtitle stream that CD writes down, described method comprises:
Before the playback of beginning play list file, whole text subtitle file specified in the described play list file is preloaded in first buffer once; And
The described play list file of playback is so that reproduce at least one audio/video (AV) stream file specified in the described play list file and the text subtitle file of described prestrain simultaneously.
2. the method for claim 1 also comprises:
Before the playback of the described play list file of beginning, the font file relevant with described text subtitle file is preloaded in second buffer.
3. method as claimed in claim 2 is characterized in that, the information that is used to specify described font file be included in the corresponding clip information file of described text subtitle file in.
4. method as claimed in claim 2 is characterized in that the size of described second buffer is in the scope of 2 to 4 Mbytes.
5. method as claimed in claim 2 is characterized in that, when described font file comprise Chinese, Japanese and Korean (CJK) font file one of at least the time, the size of described second buffer is 4 Mbytes.
6. the method for claim 1 is characterized in that, described text subtitle file is recorded in the described CD and exists as stream file independently.
7. the method for claim 1 is characterized in that, the size of described first buffer is more than or equal to the size of described text subtitle file.
8. the method for claim 1 is characterized in that, the size of described first buffer is more than or equal to 0.5 Mbytes.
9. the method for claim 1, it is characterized in that, described text subtitle file is an appointment during son included in described play list file is play, and described at least one AV stream file is an appointment during included at least one play in described play list file.
10. method that is used for reproducing the text subtitle stream that CD writes down, described method comprises:
Before the playback of beginning play list file, a plurality of text subtitle file are written in first buffer once, described a plurality of text subtitle file designated multilingual that is used in described playlist is used;
The described play list file of playback is so that reproduce one of at least one audio/video (AV) stream file specified in the described play list file and text subtitle file of described prestrain simultaneously.
11. method as claimed in claim 10 also comprises:
Before the playback of the described play list file of beginning, with font file disposable be preloaded in second buffer relevant with described a plurality of text subtitle stream files.
12. method as claimed in claim 11 is characterized in that, the size of described second buffer is more than or equal to the combined size of described font file.
13. method as claimed in claim 10 is characterized in that, the size of described first buffer is more than or equal to the combined size of described a plurality of text subtitle file.
14. a method that is used for reproducing the text subtitle stream that CD writes down, described method comprises:
Before the playback that begins play list file, the whole text subtitle file of son being play appointment in the item is preloaded in first buffer once, and described son is play item and is included in the described play list file; And
The described play list file of playback is play at least one audio/video (AV) stream file specified in the item and the text subtitle file of described prestrain so that reproduce at least one simultaneously, and described at least one broadcast item is included in the described play list file.
15. method as claimed in claim 14 also comprises:
Before the playback of the described play list file of beginning, the font file relevant with described text subtitle file is preloaded in second buffer.
16. the system that the text subtitle stream that is write down in the CD is decoded, described decode system comprises:
Captions prestrain buffer, it is configured to be preloaded into once whole text subtitle file, described text subtitle file and described at least one AV stream file appointment in play list file before reproducing at least one audio/video (AV) stream file; And
Text subtitle decoder, it is configured to the text subtitle file that is preloaded in the described captions prestrain buffer is decoded.
17. decode system as claimed in claim 16 also comprises:
Font prestrain buffer, it is configured to be preloaded into the font file relevant with described text subtitle file once before reproducing described at least one AV stream file.
18. decode system as claimed in claim 17 is characterized in that, the information that is used to specify described font file be included in the corresponding clip information file of described text subtitle file in.
19. decode system as claimed in claim 17 is characterized in that, the size of described font prestrain buffer is in the scope of 2 to 4 Mbytes.
20. decode system as claimed in claim 16 is characterized in that, described text subtitle file is recorded in the described CD and exists as stream file independently.
21. decode system as claimed in claim 16 is characterized in that, the size of described captions prestrain buffer is more than or equal to the combined size of described text subtitle file.
22. decode system as claimed in claim 16, it is characterized in that, described text subtitle file is appointed during son included in described play list file is play, and described at least one AV stream file is that included at least one is appointed in playing in described play list file.
23. decode system as claimed in claim 16 also comprises:
Graphics plane, it is configured to the output of described text subtitle decoder is converted to displayable image; And
Color look up table, it is configured to control the color and the transparency level of described displayable image.
24. decode system as claimed in claim 16 is characterized in that, described text subtitle decoder comprises:
Text subtitle processor, it is configured to resolve to compound the text subtitle file of described prestrain and delineation information and dialog text;
Dialogue composite buffering device, it is configured to store described compound and delineation information;
Dialog buffer, it is configured to store described dialog text;
Text renderer, it is configured to depict the dialog text of being stored in the described dialog buffer as bitmap object according to the compound and delineation information of being stored in the described dialogue composite buffering device; And
Bitmap object buffer is used to store described bitmap object.
25. the decode system that the text subtitle stream that is write down in the CD is decoded, described decode system comprises:
Captions prestrain buffer, it is configured to be preloaded into a plurality of text subtitle file once before at least one audio/video (AV) stream file specified in reproducing play list file, and described a plurality of text subtitle file designated multilingual that is used in described play list file is used; And
Text subtitle decoder, it is configured to one of text subtitle file that is preloaded in the described captions prestrain buffer is decoded.
26. decode system as claimed in claim 25 also comprises:
Font prestrain buffer, it is configured to be preloaded into once and the relevant font file of described a plurality of text subtitle file before reproducing described at least one AV stream file.
27. decode system as claimed in claim 26 is characterized in that, the size of described font prestrain buffer is more than or equal to the combined size of described font file.
28. decode system as claimed in claim 26 is characterized in that, described text subtitle decoder is decoded to one of text subtitle file of described prestrain with the font file that is preloaded in the described font prestrain buffer.
29. decode system as claimed in claim 25 is characterized in that, the size of described captions prestrain buffer is more than or equal to the combined size of described a plurality of text subtitle file.
30. a disk player that is used for reproducing the text subtitle stream that CD writes down, described disk player comprises:
The audio decoder parts, it is configured to the audio stream that is write down in the described disc is decoded;
The video decode parts, it is configured to the video flowing that is write down in the described disc is decoded; And
The caption decoding parts, it is configured to be preloaded into whole text subtitle file once and the text subtitle file of described prestrain is decoded before reproducing at least one audio/video (AV) stream file, and described text subtitle file and described at least one AV stream file are appointed in play list file.
31. disk player as claimed in claim 30 is characterized in that, described caption decoding parts comprise:
Captions prestrain buffer, it is configured to be written into described whole text subtitle file once before reproducing described at least one AV stream file; And
Text subtitle decoder, it is configured to the text subtitle file that is preloaded in the described text prestrain buffer is decoded.
32. disk player as claimed in claim 31 is characterized in that, described caption decoding parts also comprise:
Font prestrain buffer, it is configured to be preloaded into the font file relevant with described text subtitle file once before reproducing described at least one AV stream file.
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| CN 200480041530 Pending CN101080770A (en) | 2004-02-10 | 2004-10-13 | Recording medium having a data structure for managing various data streams and recording and reproducing methods and apparatuses |
| CN 200480042284 Pending CN1926628A (en) | 2004-02-10 | 2004-11-26 | Recording medium having a data structure for managing data streams associated with different languages and recording and reproducing methods and apparatuses |
| CN200710139867A Expired - Fee Related CN100585717C (en) | 2004-02-10 | 2004-11-26 | On recording medium, generate, write down and reproduce the method and apparatus of text subtitle |
| CNB2004800415273A Expired - Fee Related CN100555438C (en) | 2004-02-10 | 2004-11-26 | Recording medium and record and reproducting method and device with the data structure that is used to manage text subtitle |
| CN 200480041531 Pending CN1914903A (en) | 2004-02-10 | 2004-12-08 | Text subtitle decoder and method for decoding text subtitle streams |
| CN 200580004498 Pending CN1918649A (en) | 2004-02-10 | 2005-01-12 | Recording medium and method and apparatus for decoding text subtitle streams |
| CN 200580004499 Pending CN1918650A (en) | 2004-02-10 | 2005-01-12 | Recording medium and method and apparatus for decoding text subtitle streams |
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| CN 200480041530 Pending CN101080770A (en) | 2004-02-10 | 2004-10-13 | Recording medium having a data structure for managing various data streams and recording and reproducing methods and apparatuses |
| CN 200480042284 Pending CN1926628A (en) | 2004-02-10 | 2004-11-26 | Recording medium having a data structure for managing data streams associated with different languages and recording and reproducing methods and apparatuses |
| CN200710139867A Expired - Fee Related CN100585717C (en) | 2004-02-10 | 2004-11-26 | On recording medium, generate, write down and reproduce the method and apparatus of text subtitle |
| CNB2004800415273A Expired - Fee Related CN100555438C (en) | 2004-02-10 | 2004-11-26 | Recording medium and record and reproducting method and device with the data structure that is used to manage text subtitle |
| CN 200480041531 Pending CN1914903A (en) | 2004-02-10 | 2004-12-08 | Text subtitle decoder and method for decoding text subtitle streams |
| CN 200580004498 Pending CN1918649A (en) | 2004-02-10 | 2005-01-12 | Recording medium and method and apparatus for decoding text subtitle streams |
| CN 200580004499 Pending CN1918650A (en) | 2004-02-10 | 2005-01-12 | Recording medium and method and apparatus for decoding text subtitle streams |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018076899A1 (en) * | 2016-10-28 | 2018-05-03 | 深圳市中兴微电子技术有限公司 | Data switching method, device, terminal and computer-readable storage medium |
| WO2019109678A1 (en) * | 2017-12-04 | 2019-06-13 | 青岛海信电器股份有限公司 | Subtitle switching method and display apparatus |
| CN111399788A (en) * | 2018-12-29 | 2020-07-10 | 西安诺瓦星云科技股份有限公司 | Media file playing method and media file playing device |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| KR100727921B1 (en) * | 2004-02-28 | 2007-06-13 | 삼성전자주식회사 | Storage medium recording text-based subtitle stream, reproducing apparatus and reproducing method thereof |
| JP4569673B2 (en) * | 2008-06-24 | 2010-10-27 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Subtitled video playback device, subtitled video playback method and program |
| CN101764949B (en) * | 2008-11-10 | 2013-05-01 | 新奥特（北京）视频技术有限公司 | Timing subtitle collision detection method based on region division |
| KR20110018261A (en) * | 2009-08-17 | 2011-02-23 | 삼성전자주식회사 | Method and apparatus for processing text subtitle data |
| CN103067665A (en) * | 2012-12-25 | 2013-04-24 | 天津市亚安科技股份有限公司 | Implement method of self-adaptation overlying character colors based on video luminance |
| CN105338394B (en) | 2014-06-19 | 2018-11-30 | 阿里巴巴集团控股有限公司 | The processing method and system of caption data |
| RU2701172C2 (en) * | 2014-12-19 | 2019-09-25 | Сони Корпорейшн | Transmitting device, transmission method, receiving device and reception method |
| CN106652983B (en) * | 2016-09-18 | 2021-04-02 | 福建网龙计算机网络信息技术有限公司 | Subtitle making method and system |
| CN110109965A (en) * | 2018-02-02 | 2019-08-09 | 上海颐为网络科技有限公司 | The auxiliary reminding method and component of the structure of knowledge are established on Knowledge Sharing platform |
| CN108924622B (en) * | 2018-07-24 | 2022-04-22 | 腾讯科技（深圳）有限公司 | Video processing method and device, storage medium and electronic device |
| CN116634218B (en) * | 2023-05-25 | 2024-04-02 | 优酷网络技术（北京）有限公司 | Popularization information display method, device, equipment and medium |
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- 2004-10-12 CN CNB2004800415292A patent/CN100473133C/en not_active Expired - Fee Related
- 2004-10-13 CN CN 200480041530 patent/CN101080770A/en active Pending
- 2004-11-26 CN CN 200480042284 patent/CN1926628A/en active Pending
- 2004-11-26 CN CN200710139867A patent/CN100585717C/en not_active Expired - Fee Related
- 2004-11-26 CN CNB2004800415273A patent/CN100555438C/en not_active Expired - Fee Related
- 2004-12-08 CN CN 200480041531 patent/CN1914903A/en active Pending
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2005
- 2005-01-12 CN CN 200580004498 patent/CN1918649A/en active Pending
- 2005-01-12 CN CN 200580004499 patent/CN1918650A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018076899A1 (en) * | 2016-10-28 | 2018-05-03 | 深圳市中兴微电子技术有限公司 | Data switching method, device, terminal and computer-readable storage medium |
| WO2019109678A1 (en) * | 2017-12-04 | 2019-06-13 | 青岛海信电器股份有限公司 | Subtitle switching method and display apparatus |
| US10999643B2 (en) | 2017-12-04 | 2021-05-04 | Hisense Visual Technology Co., Ltd. | Subtitle switching method and display device |
| CN111399788A (en) * | 2018-12-29 | 2020-07-10 | 西安诺瓦星云科技股份有限公司 | Media file playing method and media file playing device |
| CN111399788B (en) * | 2018-12-29 | 2023-09-08 | 西安诺瓦星云科技股份有限公司 | Media file playing method and media file playing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101093709A (en) | 2007-12-26 |
| CN1914903A (en) | 2007-02-14 |
| CN100555438C (en) | 2009-10-28 |
| CN100585717C (en) | 2010-01-27 |
| CN1918649A (en) | 2007-02-21 |
| CN101080770A (en) | 2007-11-28 |
| CN1918650A (en) | 2007-02-21 |
| CN100473133C (en) | 2009-03-25 |
| CN1914684A (en) | 2007-02-14 |
| CN1926628A (en) | 2007-03-07 |
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