WO2005006305A1 - メディアデータ表示装置、メディアデータ表示方法およびメディアデータ表示プログラム - Google Patents
メディアデータ表示装置、メディアデータ表示方法およびメディアデータ表示プログラム Download PDFInfo
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- WO2005006305A1 WO2005006305A1 PCT/JP2004/009247 JP2004009247W WO2005006305A1 WO 2005006305 A1 WO2005006305 A1 WO 2005006305A1 JP 2004009247 W JP2004009247 W JP 2004009247W WO 2005006305 A1 WO2005006305 A1 WO 2005006305A1
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- Prior art keywords
- display
- moving image
- scaling
- media data
- display area
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
Definitions
- the present invention relates to a media data display device, a media data display method, and a media data display program, and in particular, a media data display device, a media data display method, and a media that display multimedia data including a plurality of media including moving images on a display screen.
- a media data display device a media data display method
- a media that display multimedia data including a plurality of media including moving images on a display screen is related to data display program.
- the MP4 file In the case of TS (Transport Stream, used for digital broadcasting), the MP4 file is not transmitted as it is, but the encoded data itself is transmitted in a bucket, but in the case of HTT P / TCP, the MP4 file is transmitted. It is transmitted as it is.
- the display when displaying a video multiplexed in an MP4 file, the display is performed based on the video display area size and the video image size of the MP4 file. In other words, if the video display area size is different from the video image size, In such a case, it is necessary to scale the video image size to the video display area size for display.
- the structure of the MP4 file will be described with reference to FIGS. 29 to 32, and the video display area size and the video image size will be described.
- FIG. 29 is an explanatory diagram illustrating the file structure of the MP4 file.
- An MP4 file is a collection of objects called BOX. Box is arranged hierarchically (see Fig. 29 (a)), and each BoX is composed of [size], [type], and [data] (see Fig. 29 (b)).
- [size] indicates the data size of Box.
- [typ e] stores four alphabetic characters that identify Box (for example, 'moov' or 'trak' described later).
- [Data] stores data corresponding to [t y p e]. Also many B
- FIG. 30 is an explanatory diagram illustrating a method of storing data of an MP4 file.
- MP4 files include File Type Bo (hereinafter referred to as 'ftyp'), Mo vie Bo x (J3 ⁇ 4 3 ⁇ 4 mo ov and when and iVl edia D ata Box (hereinafter referred to as 'md at'). ing.
- 'ftyp' is placed at the beginning of the IViP4 file and indicates an identifier ([major—brand] or [compat)
- 'mo ov' stores header information and is provided for each MP4 file. More specifically, 'mo ov' is a Mov ie Header Box (hereinafter referred to as 'mvhd,') that stores information (time scale, duration, etc.) related to the playback of media contained in MP4 files. ) (Not shown) and a track that stores header information (frame size, frame duration, initialization information, data storage location, etc.) for each medium. Bo x (hereinafter referred to as 'trak'). For example, in an MP4 file containing audio and video, there is an independent 'trak' for each media, such as audio and video.
- 'md at' stores the data of each media in media playback units called samples (for example, frames for video).
- samples for example, frames for video
- the storage location of the sample in 'md at' is specified by 'mo ov'.
- a description will be given of a file having a structure in which the header information of each medium is all stored in 'mov'.
- MP4 also defines a structure (called a “fragment”) in which media data is divided into a plurality of sections and header information is added for each divided unit, but the description is omitted here.
- FIG. 31 is an explanatory diagram for explaining the structure of 'trak'.
- 'trak' has TracckHeaderBox (hereinafter, referred to as 'tkhd') and MediaBox (hereinafter, referred to as 'mdia,').
- 'tkhd' is the size of the video display area (Wp, Hp) for video, and the upper left corner of the text display area is expressed in terms of the upper left point of the video display area for text.
- the coordinates of the point (TX, T, and the size of the text display area (Wt, Ht) are provided.
- Fig. 32 shows the positional relationship between the video display area 300 and the text display area 301.
- the video display area 300 is set in the screen 302.
- the video display area 300 has a size (Wp, Hp)
- the text display area 301 is based on the upper left point of the video display area 300.
- the coordinates (T x, T y) have the size (Wt, H t).
- 'md ia' (refer to Fig. 31) is called Media Head Box (hereinafter referred to as 'md hd') (not shown) and H andler Reference Box (hereinafter referred to as hd Ir). ⁇ It has a Media Information Box (hereinafter referred to as 'minf') 'md hd' is the information (time scale, duration, etc.) related to the playback of media stored in 'trak' .
- storing 'd I r' is an identifier indicating the type of media that is stored in the 'trak' (video [V ide:], the audio [S oun], hand I er one type, such as text Bok [text]
- the media stored in 'trak' is referenced by referring to 'hdI r'. Determine the type of key.
- 'minf' stands for Video Media Header Bo x (hereinafter, referred to as 'vmh d') (not shown), Data Attachment Bo x (hereinafter, referred to as 'dinf') (not shown) ) And Samp I e Table Bo x (hereinafter referred to as 'stb I').
- 'mh d' has basic information on video display.
- 'd inf' includes DatARefernecBox (hereinafter, referred to as 'dreff') (not shown) indicating the storage position of the information of the medium stored in 'trak'.
- 'stb I' is Sample Size Box (hereinafter, 'stsz'), Decoding Time to Sample Box (hereinafter, 'stts,'), Sample D escription Bo x (hereinafter referred to as 'stsd'), Sample To Chunk B ox (hereinafter referred to as 'stsc') (not shown), and Chunk Offset Bo x (hereinafter referred to as 'StGO') (Not shown).
- 's t s z' stores the size of each sample.
- 'stts' stores the playback time length for each sample.
- 's ts d stores playback information of a sample called VisuaisSampleEntry.
- VisuarlSampleEntry stores the image size (W, HV) of the video.
- 's t sc' stores information relating V i s u a l S amp I e En t ry to each sample.
- FIG. 33 shows the data structure of the MP4 file described above.
- the video display area size (Wp, Hp) and video image size (Wv, Hv) are stored as [data] of 'tkhd' and 'stsd', respectively.
- a conventional video scaling display will be described with reference to FIGS. 34 and 35.
- FIG. 34 is a block diagram illustrating the structure of a conventional MP4 file media data display device 10.
- the media data display device 10 is, for example, a device that downloads and plays back MP4 files stored on a server by using HTTP or a device that plays back MP4 files stored on a recording medium such as an SD card. And tele It is provided in televisions, personal computers (PCs), mobile phones, or other devices that can display image signals.
- the media data display device 10 includes a data acquisition unit 11, a header separation unit 12, a sample information acquisition unit 13, a sample acquisition unit 14, a decoding unit 15, a frame memory 16 and a basic display information acquisition unit. 17, a scaling section 18 and a display section 19 are provided.
- the data acquisition unit 11 acquires an MP4 file.
- the header separation section 1 2 The header separation section 1 2
- the sample information acquisition unit 13 is 4 stts ',' st
- the sample acquisition unit 14 acquires the sample size, storage position, decoding / display time, and the like from the information on the sample acquired by the sample information acquisition unit 13. Further, based on the information acquired from the sample information acquisition unit 13, the data acquisition unit 11 requests the data of the sample.
- the decoding unit 15 decodes the sample data acquired by the sample acquiring unit 14 for each sample.
- the frame memory 16 stores the decoded sample data, for example, for each frame.
- the basic display information obtaining unit 17 obtains information about display such as 'tkhd' and 'stsd'.
- 'tkhd' includes the video display area size (Wp, Hp)
- 'stsd' includes the video image size (Wv, Hv).
- the scaling unit 18 acquires the video display area size (Wp, Hp) and the video image size (Wv, Hv) from the basic display information acquisition unit 17. Further, the frame data of the image size (Wv, Hv) stored in the frame memory 16 is scaled to the display area size (Wp, Hp) in the f ⁇ II mode.
- the display unit 19 obtains the video display area size (Wp, Hp) and the frame data after scaling from the scaling unit 18 and stores the video display data in a display memory (not shown). Write to etc.
- FIG. 35 is an explanatory diagram illustrating scaling. If the image size (Wv, Hv) of the frame data 305 stored in the frame memory 16 and the display area size (Wp, Hp) acquired by the basic display information acquisition unit 17 are different, the frame Data 300 is scaled to video display area 300 in fi II mode
- the video is displayed after being scaled to the video display area size (Wp, Hp) indicated by 'tkhd'. For this reason, the display becomes uniform and it is difficult to realize various display methods.
- the conventional media data display device 10 requires scaling of several to several tens of times per second when displaying video, which places a high load on the CPU and a high power consumption. This is a problem for mobile terminals that require low throughput.
- a media data display device is a media data display device that displays multimedia data including a plurality of media including moving images on a display screen, and includes a scaling determination unit and a media data display unit.
- the scaling determination means determines whether the moving image is displayed with the image size changed or displayed without changing the image size.
- the media data display means is means for displaying multimedia data, and switches and displays whether or not to perform scaling based on the determination result of the scaling determination means.
- the multimedia data is, for example, an MP4 file that multiplexes and stores video, audio, text, or still images (hereinafter, the same applies in this section).
- the scaling determining means determines whether or not to perform scaling display, the moving image is not displayed uniformly in a certain area, but instead of the multimedia data. At the size intended by the creator Is displayed. It is also possible to display a moving image without performing scaling display, in which case the processing load on the device is reduced.
- a media data display device is the media data display device according to the first aspect, wherein the scaling determination unit performs the determination based on scaling determination information included in the multimedia data.
- the scaling determining means determines whether or not there is scaling based on the scaling determination information.
- the scaling judgment information expresses the intention of the creator of the multimedia data for the scaling display, the moving image is displayed reflecting the intention of the creator of the multimedia data.
- a media data display device is the media data display device according to the second aspect, wherein the scaling determination information is flag information indicating whether to perform scaling.
- the scaling determining means determines the presence or absence of scaling based on the flag information.
- a media data display device is the media data display device according to the first aspect, wherein the scaling determination unit performs the determination based on the remaining amount of the mounted battery. For example, the scaling determination means does not perform scaling display when the remaining battery power is low.
- the media data display device of the present invention determines whether or not to perform the scaling display in accordance with the remaining battery power. For example, if the scaling display is not performed when the remaining battery power is low, the power Of the media data display device can be prolonged.
- the media data display device is the media data display device according to claim 1, wherein the scaling determination unit displays the moving image by changing the image size or changes the image size. It has scaling setting means for setting whether to display the image.
- the scaling setting means may be, for example, a means for directly specifying the presence or absence of scaling, or a means for setting the operation of the media data display device and indirectly specifying the presence or absence of scaling. good.
- the scaling determination unit determines whether or not to perform scaling display according to the user's setting for the scaling setting unit. It is reflected and displayed.
- a media data display device is the media data display device according to the first aspect, wherein the scaling determination unit performs the determination based on an attribute of the moving image.
- the attributes of the moving image include, for example, the image size and the frame rate of the moving image.
- the scaling determining means determines that scaling is not performed. This prevents an excessive processing load from being applied to the media data display device.
- a media data display device wherein the media data display device displays multimedia data including a plurality of media including a moving image on a display screen, comprising: a scaling unit; and a media data display unit.
- the scaling means performs the scaling of the moving image based on scaling specification information that specifies a method of scaling the moving image in a moving image display area where the moving image can be displayed on the display screen.
- the media data display means is means for displaying multimedia data, and displays the moving image scaled by the scaling means in the moving image display area.
- the rescaling means performs the scaling of the moving image according to the specified scaling method. Is displayed in a simple manner.
- the media data display device is the media data display device according to claim 7, wherein the scaling means acquires scaling designation information from the multimedia data.
- the scaling designation information is, for example, flag information indicating the adopted scaling method, number information indicating the adopted scaling method, and the like.
- the scaling means is a multimedia data display device.
- the video is scaled to reflect the intention of the creator of the multimedia data in order to obtain the scaling specification information from the data.
- the media data display device further includes a scaling determination unit according to claim 7 or 8, which determines whether to display the moving image with the image size changed or without changing the image size. ing.
- the media data display unit switches and displays whether or not to perform scaling based on the determination result of the scaling determination unit.
- the scaling determining means determines whether or not to perform scaling display
- the moving image is not displayed uniformly in a certain area, but instead of the multimedia data. Displayed in the size intended by the creator. It is also possible to display a moving image without performing scaling display, in which case the processing load on the device is reduced.
- a media data display device is the media data display device according to the seventh aspect, further comprising scaling method setting means for setting scaling designation information.
- the moving image is scaled and displayed reflecting the intention of the user of the media data display device.
- a media data display method wherein the media data display method displays multimedia data including a plurality of media including moving images on a display screen, comprising a scaling determination step and a media data display step.
- the scaling determination step determines whether the moving image is displayed with the image size changed or displayed without changing the image size.
- the media data display step is a step of displaying the multimedia data, and displays a moving image based on the determination result of the scaling determination step.
- the moving image is not displayed uniformly in a certain area, but is displayed in a multimedia format. It is displayed in the size intended by the data creator. It is also possible to display videos without scaling, In that case, the processing load is reduced.
- a media data display method is a media data display method for displaying multimedia data including a plurality of media including moving images on a display screen, comprising a scaling step and a media data display step.
- the scaling step performs scaling of the moving image based on scaling designation information for designating a method of scaling the moving image in a moving image display area where the moving image can be displayed on the display screen.
- the media data display step is a step of displaying multimedia data, and displays the moving image y-scaled in the scaling step in the moving image display area.
- scaling of a moving image is performed in a rescaling step according to a specified scaling method. For this reason, moving images are not scaled and displayed uniformly in a certain area, but are scaled and displayed in various ways.
- Media data display program main a media data display program for media data display method for displaying multimedia ⁇ data comprising a plurality Meda containing 3 ⁇ 4 video by the computer on a display screen
- the media data display program causes a computer to perform a media data display method including a scaling determination step and a media data display step.
- a scaling determination step it is determined whether the moving image is displayed with the image size changed or displayed without changing the image size.
- the media data display step is a step of displaying multimedia data, and displays a moving image based on the determination result of the scaling determination step.
- the scaling determination step it is determined whether or not to perform the scaling display. Therefore, the moving image is not displayed in a uniform scale in a certain area. It is displayed in the size intended by the creator of the multimedia data. It is also possible to display moving images without scaling, in which case the processing load is reduced.
- the media data display program according to claim 14 is a computer-readable medium for displaying multimedia data including a plurality of media including moving images on a display screen.
- a media data display program for performing a media data display method wherein the media data display program causes a computer to perform a media data display method including a scaling step and a media data display step.
- the video is scaled based on scaling specification information that specifies a method of scaling the video in a video display area where the video can be displayed on the display screen.
- the media data display step is a step of displaying the multimedia data, and displays the moving image rescheduled by the scaling step in the moving image display area.
- the moving image is scaled in the scaling step according to the designated scaling method. For this reason, moving images are not displayed uniformly in a certain area, but are displayed in various ways.
- a media data display device for displaying multimedia data including a plurality of media including moving images on a display screen in various display methods, and a media data display program.
- a media data display device and a media data display method / media data display program for switching the display method according to conditions such as the capability of the terminal and the time of use are provided.
- FIG. 1 is a block diagram of a media data display device according to a first embodiment of the present invention.
- FIG. 2 is a diagram showing a relationship between frame data in display data and a video display area (first embodiment).
- FIG. 3 is a flowchart showing a media data display method (first embodiment).
- FIG. 4 is a block diagram of a media data display device according to a second embodiment of the present invention.
- FIG. 5 is a diagram showing the syntax of 'stdc' (second embodiment).
- FIG. 6 is a diagram showing a relationship between frame data in display data and a video display area (second embodiment).
- FIG. 7 is a flowchart showing a media data display method (Second Embodiment)
- FIG. 8 is a diagram showing the relationship between frame data and video display area in display data (Second Embodiment).
- FIG. 9 is a diagram showing a relationship between frame data in display data and a video display area (second embodiment).
- FIG. 10 is a block diagram of a media data display device as a modification of the second embodiment.
- FIG. 11 is a diagram showing a relationship between frame data in display data and a video display area (a modification of the second embodiment).
- FIG. 12 is a block diagram of a media data display device as a modification of the second embodiment (a modification of the second embodiment).
- FIG. 13 is a diagram showing a relationship between frame data in display data and a video display area (a modification of the second embodiment).
- FIG. 14 is a drawing showing the configuration of a media data display device according to a third embodiment of the present invention.
- FIG. 15 is a diagram showing the syntax of 'sts (third embodiment).
- FIG. 16 is a diagram showing various scaling methods (third embodiment).
- FIG. 17 is a diagram for explaining the operation of the scaling unit (third embodiment)
- FIG. 18 is a diagram for explaining the operation of the scaling unit (third embodiment).
- FIG. 19 is a flowchart showing a media data display method (third embodiment).
- FIG. 20 is a diagram showing the syntax of 'sts (third embodiment).
- FIG. 21 is a block diagram of a media data display device as a modification of the third embodiment.
- FIG. 22 is a diagram showing the syntax of 'sts (third embodiment).
- FIG. 23 is a block diagram showing the overall configuration of the content supply system (fourth embodiment).
- FIG. 24 is an example of a mobile phone using a moving picture coding method and a moving picture decoding method (fourth embodiment).
- FIG. 25 is a block diagram of a mobile phone (fourth embodiment).
- FIG. 26 shows an example of a digital broadcasting system (fourth embodiment).
- FIG. 27 is a diagram showing the syntax of 's t s (others).
- FIG. 28 is an explanatory diagram for explaining a method of obtaining display-related information from VisuarlSampleEntry (others).
- Fig. 29 shows the MP4 file structure as a conventional technology.
- Fig. 30 shows the data storage method for MP4 files (prior art) o
- FIG. 31 shows the structure of TracckBox (prior art).
- FIG. 32 is a diagram showing a positional relationship between a video display area and a text display area (prior art).
- FIG. 33 shows the data structure of an MP4 file (prior art).
- Fig. 34 is a block diagram of a conventional media data display device (conventional technology).
- FIG. 35 is a diagram for explaining scaling (prior art).
- a method of displaying media data by a media data display device will be described.
- the display method will be described using a video as an example, but the same display method can be applied to still images such as JPEG (Joint Photographic Experts Group).
- FIG. 1 is a block diagram illustrating a structure of a media data display device 20 according to a first embodiment of the present invention.
- the media data display device 20 for example, MP4 files stored on a storage medium such as a device that downloads and reproduces the stored MP4 files (see FIGS. 29 to 33; the same applies to the “Embodiment of the Invention” below) using an HTTP or an SD card, etc.
- It is a device for reproducing, which is provided in a television, personal computer (PC), mobile phone, or other device capable of displaying image signals.
- the video of the MP4 file has the display area size (Wp, Hp) stored in 'tkhd, regardless of the image size (Wv, Hv) stored in' stsd, '. ) Is displayed after scaling.
- the media data display device 20 does not include the scaling unit 18 (see FIG. 34) and displays the video of the MP4 file without scaling.
- FIG. 1 A description will be given of a part of the media data display device 20 of the present invention shown in FIG. 1 which is different from the conventional media data display device 10 shown in FIG. Note that parts performing the same operations as those of the conventional media data display device 10 are denoted by the same reference numerals, and description thereof will be omitted.
- the media data display device 20 is different from the media data display device 10 in that it has a display area conversion unit 21 and a terminal display screen size acquisition unit 22.
- the terminal display screen size acquisition unit 22 acquires the display screen size (Wd, Hd) of a display screen (not shown) that displays video display data output by the display unit 19.
- the display area conversion unit 21 acquires the display area size (Wp, Hp) stored in 'tkhd' from the basic display information acquisition unit 17. Further, the display area conversion unit 21 sets the video display area based on the value of the display area size (Wp, Hp) and the value of the display screen size (Wd, Hd).
- the display unit 19 stores the frame memory 16 The display data is output so that the frame data of the video to be displayed is displayed in the video display area set by the display area conversion unit 21.
- the setting of the video display area of the display area conversion unit 21 will be described in more detail.
- the display area conversion section 21 acquires the acquired display area size (Wp, Hp). ) Is set as the size of the video display area.
- the display area conversion section 21 displays the display screen size (Wd, Hd). Is set as the size of the video display area.
- Frame data 24 is the image "I's (Wv, H v) are displayed without being 3 ⁇ 4 scaled in by which the video display area 25 has a.
- Bidet O size of the display area 25 is the display area size of the display area conversion unit 21 (W ⁇ , Hp) or the display screen size (Wd, Hd) In Fig. 2, the frame data 24 is displayed centered in the video display area 25. The position of the frame data 24 with respect to the video display area 25 is determined by the display unit 19.
- a method of displaying media data in the media data display device 20 will be described with reference to FIG.
- the display area conversion unit 21 acquires the display screen size (Wd, Hd) from the terminal display screen size acquisition unit 22 (Step S26). Further, the display area conversion unit 21 acquires the display area size (Wp, Hp) stored in 'tkhd' from the basic display information acquisition unit 17 (step S27).
- the display area conversion section 21 Set (Wp, Hp) as the size of the video display area (Step S29).
- the display area conversion section 21 displays the display screen.
- the size (Wd, Hd) is set as the size of the video display area (step S30).
- the display unit 19 outputs display data so that the frame data stored in the frame memory 16 is displayed in the video display area without scaling (step S31).
- the conventional media data display device 10 requires several to several tens of scalings per second to display video, which places a high load on the CPU and increases power consumption.
- the media data display device 20 as the embodiment of the present invention does not require scaling, and can reduce the processing amount and the power consumption. This is a particularly effective effect when the media data display device 20 is provided in a portable terminal or the like.
- the media data display device 20 can set the size of the video display area according to the size of the display screen. Become. Therefore, it is possible to display a video with an appropriate size.
- the image size (Wv, Hv) of the frame data changes in the middle of the video.
- the media data display device 20 does not necessarily need to scale to (Wp, Hp), so the display according to the image size (Wv, Hv) of the frame data is performed. Can be performed.
- the display area size (Wp, Hp) acquired from the basic display information acquisition unit 17 is special. If the value indicates (0, 0), the display area conversion unit 21 obtains the display screen size (Wd, Hd) and the display area size of the 'trak' such as text and still images, and obtains the video display area. The size may be set.
- the display area conversion unit 21 performs processing of the media data display device 20 (CPU).
- the size of the video display area may be set according to the frequency, memory amount, data transfer speed, bus speed).
- the display area conversion unit 21 sets the video display area to a preset size May be used. More specifically, the media data display device 20 further includes a size setting unit that allows the user to set the size of the video display area. The media data display device 20 sets the video display area to the set size, or a power saving mode or the like. The video display area may be set to a size set according to the 20 operation conditions.
- the display area conversion unit 21 may set the size of the video display area to the display screen size (Wd, Hd).
- the media data display device 20 may include a display position determining unit that determines the display position of the frame data 24. At this time, the display unit 19 acquires the display position from the display position determination unit and outputs display data.
- FIG. 4 is a block diagram illustrating the structure of a media data display device 35 according to a second embodiment of the present invention.
- the media data display device 35 is, for example, a device that downloads and reproduces P4 files stored in a server by HTTP, or a device that reproduces MP4 files stored in a recording medium such as an SD card. It is provided in televisions, personal computers (PCs), mobile phones or other devices capable of displaying image signals.
- PCs personal computers
- Media data display device 35 is not provided with the same media data display equipment 20 described 3 ⁇ 4 scaling unit 1 8 (see FIG. 34) with reference to FIG. 1, and displays without scaling video MP 4 file has.
- the MP4 file acquired by the media data display device 35 is a Samp I e D isp I ay Center Bo x (hereinafter, referred to as 'stdc') that specifies an area to be displayed preferentially for each frame data of video. ) Is stored in 'stb I,.
- Figure 5 shows an example of the syntax of 'stdc,. 'stdc' has a structure similar to that of B 0 X described with reference to FIG. 29 (b).
- [entry—count] indicates the number of entries included in 'stdc'.
- [s amp I e-G oun tj indicates the number of consecutive samples with the same value of [disp I ay _ center _ x] and [disp I aycente r_y].
- [disp I ay-center-x] and [disp I ay-center-y] denote the X and Y coordinates of the center of the area to be displayed preferentially for each sample (for example, for each frame data). Is shown.
- the gauntlet represented by (disp Iay-center-x, dispIay-center-y) is called the priority display coordinate, and is described as (dcx, dcy).
- the method of designating the priority area is not limited to this method. For example, the coordinates of two vertices on the same diagonal may be indicated. Also, the priority may be specified in order. Further, the image area may be classified by an index other than the priority, or the priority area may be specified in a larger unit, for example, a chunk or a track which is a group of a plurality of samples.
- Media data display device 20 is different from the media data display device 1 0 in that a and 3 ⁇ 4 extended display information acquisition unit 37 and the display position legal unit 3 8. Further, the header separation unit 36 can recognize and separate 'stdc' included in the MP4 file.
- the extended display information acquisition unit 37 acquires 'stdc' separated by the header separation unit 36, and outputs priority display coordinates (dcx, dcy) for each frame data.
- the display position determination unit 38 obtains the display area size (Wp, Hp) stored by 'tkhd' and the image size (Wv, Hv) stored by 'stsd' from the basic display information obtaining unit 17,
- the priority display coordinates (dcX, dcy) are acquired from the extended display information acquisition unit 37.
- the display position determining unit 38 determines that the priority display coordinates (dcx, dcy) of the frame data of the image size (Wv, Hv) and the center of the video display area of the display area size (Wp, Hp) match. Determine the display position of the frame data in the video display area.
- the display unit 19 displays the frame data stored in the frame memory 16 at the display position determined by the display position determination unit 38. Is output.
- the relationship between the frame data 45 in the display data and the video display area 46 will be described with reference to FIG.
- the display area size (Wp, Hp) is larger than the image size (Wv, HV), so the entire moving image is displayed.
- the frame data 45 has an image size (Wv, Hv) and is displayed without scaling in the video display area 46.
- the video display area 46 has a display area size (Wp, Hp).
- the display position of the frame data 45 is determined so that the priority display coordinates (dGX, dcy) coincide with the center point of the video display area.
- the header separation unit 36 separates 'tkhd', 'stsd', and 'stdc' from the MP4 file (step S48).
- the display position determining unit 38 obtains the display area size (Wp, Hp) stored by 'tkhd' and the image size (Wv, Hv) stored by 'stsd' from the basic display information obtaining unit 17,
- the priority display coordinates (dcX, dcy) stored by 'stdc' are acquired from the extended display information acquisition unit 37 (step S49).
- the display position determining unit 38 determines the frame data in the video display area based on the acquired display area size (Wp, Hp), image size (Wv, HV), and priority display coordinates (dGjc, dcy). The display position of is determined (step S50).
- the display unit 19 outputs display data so that the frame data stored in the frame memory 16 is displayed without scaling at the display position determined by the display position determination unit 38 (step S51).
- the conventional media data display device 10 requires several to several tens of scalings per second to display video, which places a high load on the CPU and increases power consumption.
- the media data display device 35 as the embodiment of the present invention does not require scaling, and can reduce the processing amount and the power consumption. This is the case when the media data display device 35 is provided in a mobile terminal or the like. In this case, the effect is particularly effective.
- the display position determining unit 38 determines the moving image display position, so that the display unit 19 can display the moving image at an appropriate position.
- the media data display device 35 it is possible to preferentially display an important portion for each sample (for each frame data).
- the display area size (Wp, Hp) is smaller than the image size (Wv, Hv)
- the display area is switched preferentially for each sample, reflecting the intention of the content provider.
- a display with a high visual effect can be achieved.
- This effect is the same when the priority area is specified in a larger unit, for example, a chunk unit or a track unit that is a group of a plurality of samples.
- the processing load can be reduced as compared with the case where the priority area is specified for each sample.
- the image size (Wv, Hv) of the frame data changes in the middle of the video.
- the media data display device 35 can perform display according to the image size (Wv, Hv) of the frame data.
- the MP4 file on which the present invention is based has a newly defined 'stdG'. For this reason, when the conventional media data display device 10 that does not support “stdc” acquires an MP4 file having “stdc”, “stdc” is not recognized and is skipped. That is, without affecting the display of the conventional media ⁇ data display apparatus 1 0, the recognition apparatus capable 'std c', the data structure of the MP 4 file to enable new features are provided.
- the display position determining unit 38 matches the priority display coordinates (dcx, dcy) with the center of the video display area.
- the display position is determined as described above, if the video display area has room, the determined display position may be automatically adjusted.
- FIG. Figure 8 (a) shows the frame data 52 and the video display area 53 when the display position is determined so that the priority display coordinates (dcX, dcy) of the frame data 52 match the center of the video display area 53. The positional relationship of is shown.
- the video display area 53 has a display margin 54
- the frame data 52 has a non-display area 55.
- the display position of the frame data 52 is adjusted so that the priority display coordinates (dGx, dcy) are included in the video display area 53 and the largest possible area of the frame data 52 is displayed.
- FIG. 8B shows the positional relationship between the adjusted frame data 52 and the video display area 53.
- FIG. 8 Another example of the relationship between the frame data 52 'and the video display area 53' will be described with reference to FIG.
- the image size (Wv, Hv) is smaller than the display area size (Wp, Hp), but in this example, the image size (Wv, Hv) is smaller than the display area size (Wp, Hp). Greater than).
- Figure 9 (a) shows the frame data 52 'and the video when the display position is determined so that the priority display coordinates (dcx, dcy) of the frame data 52' match the center of the video display area 53 '. Shows the positional relationship with the display area 53 '. In this case, the video display area 53, the, the display extra Hiroshi 54 'there 3 ⁇ 4 frame ⁇ data 52' is a non-display area 55 '.
- the display position of the frame data 52 ' is adjusted so that the priority display coordinates (dcX, dcy) are included in the video display area 53' and the widest possible area of the frame data 52 'is displayed.
- FIG. 9B shows the positional relationship between the adjusted frame data 52 'and the video display area 53'. In this case, the entire frame data 52 'is not displayed, but the priority display area is definitely displayed, and the gray area 56' is displayed.
- the display position determination unit 38 stores the 'tkhd' from the basic display information acquisition unit 17
- the display area size (Wp, Hp) and the image size (Wv, Hv) stored by 'stsd' are obtained, and the display area size (Wp, Hp) is larger than the image size (Wv, Hv). If it is large, 'stdc, may be skipped. In that case, display is performed according to the following operation (4-2).
- the MP4 file does not have 'stdc', or if the media data display device does not recognize 'stdc', it is necessary to determine the video display position in the video display area.
- the display position determining unit 38 determines a predetermined point (upper left, upper right, lower left, lower right, center, etc.) of the video display area. ) And a predetermined point of the frame data (upper left, upper right, lower left, lower right, center, etc.) are determined to determine the display position of the frame data.
- the media data display device may determine the display position of the reframe data according to the user's specification.
- FIG. 10 is a block diagram illustrating the structure of a media data display device 56 as a modification of the second embodiment.
- the media data display device 56 similar to the media data display device 20 described with reference to FIG. 1, does not include the scaling unit 18 (see FIG. 34) and displays the video of the MP4 file without scaling.
- a description will be given of a portion of the media data display device 56 shown in FIG. 10 which is different from the conventional media data display device 10 shown in FIG. Note that parts performing the same operations as those of the conventional media data display device 10 are denoted by the same reference numerals, and are explained. Omit the light
- the media data display device 56 differs from the media data display device 10 in that a display position setting unit 57 and a display position determination unit 58 are provided.
- the display position setting unit 57 allows the user to set the display position of the frame data. For example, select the display position from [Center, Top, Bottom, Right, Left].
- the display position determination unit 58 obtains the display area size (Wp, Hp) stored by 'tkhd' and the image size (Wv, Hv) stored by 'stsd' from the basic display information obtaining unit 17. Further, the display position of the frame data in the video display area is determined based on the setting of the display position setting section 57.
- the display unit 19 outputs display data so that the frame data stored in the frame memory 16 is displayed at the display position determined by the display position determination unit 58.
- the frame data 61 in the display data and the video display area 62 will be described with reference to FIG.
- the frame data 61 has an image size (W V, H v) and is displayed in the video display area 62 without being scaled.
- the video display area 62 has a display area size (Wp, Hp).
- the display position of the frame data 61 is determined so that the upper side of the frame data 61 and the upper side of the video display area are aligned when [up] is selected by the display position setting section 57.
- the left and right positions are determined so that the frame data 61 is centered with respect to the video display area 62.
- FIG. 11A shows a case where the display area size (Wp, Hp) is larger than the image size (Wv, Hv).
- the display area size (Wp, Hp) is smaller than the image size (Wv, Hv)
- FIG. 11B shows the relationship between the frame data 63 and the video display area 64 when “up” is selected by the display position setting unit 57.
- the display position setting unit 57 not only allows the user to select a display position from [center, top, bottom, right, left] and the like, but also inputs display position data (layout and size, etc.). May be performed.
- the media data display device determines the display position of the frame data based on the display position of media (text, still images, etc.) other than video in the MP4 file, and o
- the media data display device can interpret “stdc”, it may be displayed according to a user setting or a predetermined display method.
- FIG. 12 is a block diagram illustrating the structure of a media data display device 70 as a modification of the second embodiment.
- the media data display device 70 similar to the media data display device 20 described with reference to FIG. 1, does not include the scaling unit 18 (see FIG. 34) and displays the video of the MP4 file without scaling.
- the media data display device 70 shown in FIG. 12 a portion different from the conventional media data display device 10 shown in FIG. 34 will be described. It should be noted that parts performing the same operation as the conventional media Adeta display device 1 0, omitted 3 ⁇ 4 Description denoted by the same reference numerals
- the media data display device 70 is different from the media data display device 10 in that a display position determining unit 71 is provided.
- the display position determining unit 71 calculates the display area size (Wp, Hp) stored by the video 'tkhd' and the image size (Wv, Hv) stored by the 'stsd' from the basic display information acquisition unit 17. get.
- the display position (Tx, Ty) of the text display area and the display area size (Wt, Ht) of the text display area stored in 'tkhd' of the text are acquired.
- the display position determining unit 71 determines the display position of the frame data in the video display area based on the acquired information. Specifically, the vertical position is determined so that the upper end of the text display area matches the lower end of the frame data, and the center of the text display area and the center of the frame data are determined. Are determined in the left-right direction so as to match.
- the display unit 19 outputs display data so that the frame data stored in the frame memory 16 is displayed at the video display position determined by the display position determination unit 71.
- the positional relationship between the frame data 76, the video display area 77, and the text display area 78 in the display data will be described with reference to Fig. "! 3.
- the video having the display area size (Wp, Hp) A display area 77 is set, and a text display area 78 having a display area size (Wt, Ht) at coordinates (Tx, Ty) with reference to the upper left point of the video display area 77. Is set.
- the vertical display position of the frame data 76 having the image size (Wv, Hv) is determined to be adjacent to the text display area 78 in the upward direction.
- the horizontal display position of the frame data # 6 is determined so that the center of the frame data # 6 and the center of the text display area 78 in the horizontal direction coincide with each other.
- the display position of the frame data is determined based on the display position of media (text, still image, etc.) other than video included in the # 4 file. Therefore, each medium is displayed at an appropriate position, and the visibility of information display is improved.
- the frame data is displayed so as to be adjacent to the text display area in the upward direction
- the effect of the present invention is not particularly limited to the upward direction. It may be a direction.
- the text in the text display area may be determined based on the display position of the sample.
- FIG. 14 is a block diagram illustrating a structure of a media data display device 85 according to a third embodiment of the present invention.
- the media data display device 85 is, for example, a server A device that downloads and plays MP4 files stored in a storage medium such as an SD card, or a device that plays MP4 files stored on a recording medium such as an SD card.
- the media data display device 85 determines whether or not to scale the video frame data based on the information obtained from the MP4 file.
- the MP4 file acquired by the media data display device 85 may have “stdc” described with reference to FIG. 5 in the second embodiment.
- the MP4 file acquired by the media data display device 85 must have Samp I e Scale Bo x (hereinafter, referred to as 'sts I') in 'stb' to specify the scaling method for each sample (for each frame data).
- 'sts I' Samp I e Scale Bo x
- 'stb' to specify the scaling method for each sample (for each frame data).
- the specification of the scaling method is not limited to each sample, and may be specified in a larger unit, for example, a chunk unit or a track unit which is a group of a plurality of samples. In this case, the processing load can be reduced compared to the case where the scaling method is specified for each sample.
- Figure 15 shows an example of the syntax for 's t ss.
- 'st s has the same structure as B O X described with reference to FIG. 29 (b).
- [f i I I — f l ag] is set, specify scaling in f i I I mode.
- [hidden—fIag] is set, specify scaling in hidden mode.
- [me e t_f I ag] is set, specify scaling in me e t mode.
- [sic e — x—f I ag] is set, specify scaling in sI c e mode on the X axis (left and right in the screen).
- [sIice_y_fIag] specify scaling in sIiGe mode on the Y axis (up and down direction of the screen).
- [fill-flag] [hidden-fIag]
- [meet-i-x-fIag] Lmetet-y-i-fIag
- [sIice-x-1fI ag] and [sI ice-y-f I ag] at most one flag is always set.
- the fill mode is a mode in which frame data of the image size (Wv, Hv) (see Fig. 16 (a)) is scaled to the display area size (Wp, Hp) and displayed (Fig. 16 (b ) See).
- the frame data of the image size (Wv, Hv) is not scaled (see Fig. 16 (a)), but is displayed within the range of the video display area of the display area size (Wp, Hp).
- the part that can be displayed is displayed (see Fig. 16 (c)). More specifically, when (Wv ⁇ Wp) or (Hv ⁇ Hp), a specific background color is displayed in an area where no frame data is displayed in the video display area.
- the frame data that exceeds (Wp, Hp) is clipped.
- one of the vertical and horizontal dimensions is displayed in the video display area while maintaining the aspect ratio of the frame data (the ratio between the vertical and horizontal dimensions of the image, [Wv: Hv]).
- scaling is performed until the area becomes equal to the area.
- a specific background color is displayed in an area where the frame data is not displayed in the video display area. In this mode, frame data is not clipped.
- sI ice mode keeps the aspect ratio of the frame data (ratio of vertical and horizontal size of the image, [Wv: Hv]). Scales until the vertical or horizontal size becomes equal to the video display area. To display. A specific background color is displayed in the video display area where no frame data is displayed. In this mode, frame data may be clipped.
- the media data display device 85 is different from the media data display device 10 in that the media data display device 85 includes an extended display information acquisition unit 86 and a scaling determination unit 87. Further, the header separating unit 88 can recognize and separate 'stdc and' sts I 'of the MP4 file. Also, the scaling unit 89 It is possible to perform scaling based on the determination result of the scaling determination unit 87.
- the extended display information acquisition unit 86 acquires 'stdc' and 'stss' separated by the header separation unit 88.
- the scaling determination unit 87 determines that scaling is to be performed when the extended display information obtaining unit 86 obtains' sts.
- the scaling unit 89 obtains the display area size (Wp, Hp) stored by 'tkhd' and the image size (Wv, Hv) stored by 'stsd' from the basic display information obtaining unit 17.
- the priority display coordinates (dcX, dcy) stored in 'stdc' (see FIG. 5) and the scaling method stored in 'sts' are obtained from the extended display information obtaining unit 37. Further, the scaling unit 89 acquires the determination result of the scaling determination unit 87, and executes the scaling if the determination result is positive.
- the scaled frame data is output to the display unit 19 together with the display area size (Wp, Hp) of the frame data.
- the scaling unit 89 performs scaling based on the information of the priority display area stored in 'stdG'. Specifically, 'stdc' stores the priority display coordinates (dcx, dcy), which are the coordinates of the center point of the priority display area. Therefore, the scaling unit 89 3 ⁇ 4 priority display coordinates (d G, X, dcy) from estimate the priority display area automatically so that the priority display area is displayed in the video display area of the display area size (Wp, H p) Adjust the display position to. More specifically, the scaling unit 89 selects an appropriate scaling method so that the priority area is not missing.
- priority display coordinates (dcx, dcy) have been acquired for frame data 90 of the image size (Wv, Hv) (see Fig. 17 (a)).
- the scaling unit 89 sets the largest area in the frame data 90 among the areas centered on the priority display coordinates (dcx, dcy) as the priority display area 91 (see FIG. 17 (b)).
- the priority display area 91 is the lower left part of the frame data 90.
- the scaling unit 89 sets the priority display area 91 For example, scaling is performed in the x-direction in sIice mode to make it the same size as the display area size (Wp, Hp) (see Fig. 17 (c)). As a result, the priority display area 91 is displayed.
- the priority display coordinates (dcx, dcy) have been obtained for the frame data 90 'of the image size (Wv, HV) (see Fig. 18 (a)).
- the scaling unit 89 sets the maximum area in the frame data 90 'among the areas centered on the priority display coordinates (dcx, dcy) as the priority display area 91' (see FIG. 18 (b)).
- the priority display area 91 ' is at the upper left of the frame data 90'.
- the aspect ratio of the image size (Wv, HV) is different from the aspect ratio of the display area size (Wp, Hp) (Wv is shorter than HV compared to the previous embodiment).
- the priority display area 91 ' is located at the upper left of the frame data 90'. Therefore, when the sI ce mode is adopted in this embodiment and scaling is performed in the sI ge mode in the X direction, the priority display area 91 'is missing and displayed.
- the scaling unit 89 scales the priority display area 91 ′ in the fi II mode to the same size as the display area size (Wp, H p) ( See Fig. 18 (c)). In this way, the scaling unit 89 estimates the priority display area from the priority display coordinates (dcX, dcy), and an appropriate display area 91 ′ is displayed in the video display area of the display area size (Wp, Hp). The priority display area 91 'is displayed reliably to select the scaling method.
- scaling is performed based on the state where the upper left of the image and the upper left of the display area are matched.
- the state where the lower left, upper right, lower right, or center of the image and the lower left, upper right, lower right, or center of the display area are matched may be used as a reference for scaling. It may be set.
- the header separating unit 88 separates' tkhd,, 'stsd,,' stdc 'and' sts from the MP4 file (step S95).
- the scaling unit 89 acquires the display area size (Wp, Hp) stored by 'tkhd' and the image size (Wv, Hv) stored by 'stsd' from the basic display information acquisition unit 17.
- the priority display coordinates (dcx, dcy) stored in 'std C ' and the scaling method stored in 'sts' are obtained from the extended display information obtaining unit 37 (step S96).
- the scaling determination unit 87 determines that scaling is performed (step S97). If it is determined that the scaling is to be performed, the scaling unit 89 scales the priority display area of the frame data stored in the frame memory 16 to the display area size (Wp, Hp) and outputs it. (Step S98). If it is determined that scaling is not to be performed, the scaling section 89 outputs the priority display area of the frame data stored in the frame memory 16 without scaling (step S99).
- Fig. 20 shows an example of the syntax for setting this information in 'sts'.
- [constrain t_f I ag] when set, it indicates that scaling is always performed according to the scaling operation indicated by 'sts. If not, the terminal determines whether or not to scale. Indicates that can be selected. Therefore, if [constraint-flag] is not set, whether to perform scaling may be determined based on information such as the remaining battery level of the terminal or the contents of user settings.
- the MP4 file acquired by the media data display device 85 may be able to store 'stdc' only when 'sts I,' exists.
- 's t s I' is BOX indicating the scaling method. For this reason, if 's t s has, it is considered that the provider of the MP4 file intends that the frame data is scaled and displayed. That is, the display reflecting the intention of the provider of the MP4 file can be performed.
- the media data display device 85 does not require scaling, and can reduce the processing amount and the power consumption. This is a particularly effective effect when the media data display device 85 is provided in a portable terminal or the like.
- the # 4 file which is the premise of the present invention has a newly defined 'stssI'. For this reason, when the MP4 file having 'sts' is acquired by the conventional media data display device 10 which does not support 'stsI', 'sts' is not recognized and is skipped. That is, an MP4 file data structure that realizes a new function is provided to a device capable of recognizing 's ts without affecting the display of the conventional media data display device 10.
- the media data display device 85 does not include the scaling judgment unit 87 and always A single ring display may be used.
- the scaling unit always performs the same operation as the scaling unit 89 that has been determined to perform the scaling display.
- the scaling unit 89 performs scaling in the met mode or sI ice mode instead of the fi II mode. There may be.
- scaling may be performed only at integer magnifications such as 1, 2, 4, 2, or 3 times.
- the processing at the time of scaling is simplified, for example, processing can be performed for every two adjacent pixels, resulting in power saving.
- the media data display device 85 may not include the extended display information acquisition unit 86 and the scaling determination unit 87, and may determine the presence or absence of scaling and the scaling method according to the user's specification.
- FIG. 21 is a block diagram illustrating the structure of a media data display device 100 as a modification of the third embodiment.
- the media data display device 100 shown in FIG. 21 portions different from the media data display device 85 shown in FIG. 14 will be described. Note that parts that perform the same operations as those of the media data display device 85 are given the same reference numerals, and descriptions thereof are omitted.
- the media data display device 100 is different from the media data display device 85 in that it does not include the extended display information acquisition unit 86 and the scaling determination unit 87, and that it has the scaling method setting unit 101. Different from device 85.
- the scaling method setting unit 101 allows the user to set a scaling method (fill mode, meet mode, sI ice mode, etc.).
- the scaling unit 102 converts the frame data of the image size (Wv, Hv) stored in the frame memory 16 into the display area size (Wp, Hp) according to the scaling method set by the scaling method setting unit 101. Scale the video display area. As a result, it is possible to reflect the user's will to the presence or absence of scaling and the scaling method.
- the scaling determination unit 87 determines whether or not scaling has been performed according to the remaining amount of the installed battery, instead of or in addition to determining whether or not scaling has been performed when the extended display information obtaining unit 86 has obtained 'sts I'. It may be a judgment. That is, the scaling determination unit 87 obtains the remaining battery level from a battery management unit (not shown) and determines whether or not scaling is performed.
- Scaling determining unit 87 may be switched whether to perform scaling according to instead of determining whether to perform scaling by the expanded display information acquisition unit 86 'obtains the S ts or in addition the user settings. That is, the scaling determination unit 87 switches the presence or absence of scaling according to the setting from the scaling setting unit (not shown).
- the user may specify whether or not to perform scaling by using a “scaling” menu on a menu screen of a mobile terminal or the like equipped with a media data display device.
- the scaling may not be performed when the mode is selected.
- the user's settings may always be prioritized, regardless of whether 's t s is acquired.
- the scaling determination unit 87 may determine the presence or absence of scaling from information other than 'sts acquired from the MP4 file. ⁇ 1>
- the scaling determination unit 87 may not perform scaling when the extended display information acquisition unit 86 acquires 'stdc' and does not acquire 'sts'.
- the scaling determination unit 87 may determine whether or not to perform scaling based on 'ftyp' acquired by the basic display information acquisition unit 17. For example, the presence or absence of scaling is determined by whether or not an identifier indicating a specific stick (such as [major-brand] or [commp atib I e — brand]) is included. You may.
- an identifier indicating a specific stick such as [major-brand] or [commp atib I e — brand]
- the scaling determination unit 87 may determine whether or not to perform scaling based on 'mv hd' or 'tkh d' acquired by the basic display information acquisition unit 17.
- the frame of the frame data Judging the rate, if the frame rate is below a certain set value (for example, the frame rate is 0.5 frame / s for a set value of 1 frame / s), scaling is performed. May be.
- the time required for the media data display device 85 to be assigned to the decoding process of one frame (display time is 1/15 second for 15 frame / s, for example) If the time required for is less than the allocatable time, scaling may be performed.
- 'sts I' is stored in 'stb I' and specifies that the scaling method is specified for each sample. Where 'sts is' tr It may be stored in ak 'and specify the same scaling method for each track.
- Fig. 22 shows an example of the syntax used to indicate the scaling method for each track. At this time, it is desirable that 'sts' be placed directly below 'trak'. Also, the scaling method may be specified for each chunk that is a group of multiple samples.
- 'Stdc' and 'stss' described in the above embodiment may be information included in the same BOX.
- the information of the priority area stored in 'stdc' may be included in 'stsI,'. The reverse is also true.
- the scaling method is specified as flag information.
- the scaling method may be specified by, for example, the value of [seale-method] represented by 8 bits. More specifically, for fi II mode, hidden mode, me et et— 3 ⁇ 4 X axis ⁇ horizontal direction of the plane) 0 s I ice mode and Y axis (screen vertical direction) Thus, one of the values [1] to [5] is given.
- the present invention is not limited to this, and any format may be used as long as it is information for specifying a scaling method.
- the remaining values of [sca I e -method] for example, values of 128 to 255, can be used as user-specified areas as follows.
- the user-specified area may be used to indicate scaling method or priority area information other than the scaling method or priority area information described in the above embodiment ⁇ 1>
- standards such as 3GPP (3rd Generation Partnership Project) or service providers' operating standards It may be used to indicate information on a determined scaling method or priority area.
- the unique number assigned to the standard or operation standard is stored in the user-specified area.
- the priority when displaying an image of a truck.
- the priority is indicated by using a specific bit (such as the upper 3 bits) of [seale-one-method].
- a specific bit such as the upper 3 bits
- auxiliary data when transmitting an MP4 file as auxiliary data of main content such as TV broadcast or download / streaming content, it may be used to indicate that the data is auxiliary data. Specifically, it is possible to switch the display method between the auxiliary data and the main content, such as displaying the auxiliary data in a predetermined method.
- the user specified area may be used to indicate the following information.
- the information related to scrolling is, for example, information indicating a display area of a default (non-scrolling state) or scrolling when the terminal has a scrolling function and cannot display the entire area of the image at once.
- This information includes flag information indicating whether the function should be enabled.
- an image to be displayed is scaled by scrolling, and is prevented from being displayed inappropriately. In other words, it is possible to appropriately display the image to be displayed by scrolling.
- the display-related information is information related to the display of the sample, and is stored in, for example, 'stb I'. Information. More specifically, the display-related information includes information included in the Visual Sample I Entry, information included in 'sts' described above, and information included in 'stdc'.
- This user-specified area may indicate a plurality of display-related information by, for example, a plurality of 'St SI's associated with the capability of the terminal, or may have a plurality of entries in the' sts It may indicate a plurality of display-related information associated with the ability.
- a plurality of 'stss are used, a plurality of VisuaISampleEntrs each storing one' stss may be used.
- the association between the display-related information and the capability of the terminal is performed, for example, by adding an identifier of the capability of the terminal such as High, Medium, and Low for each display-related information.
- the display terminal when the ability is high, the display is performed based on the information corresponding to High, and when the ability is low, the display is performed based on the information corresponding to Low.
- Li 3 ⁇ 4 example Do can acquire the display-related information corresponding to the capability of the terminal, to perform display by optimal tables How to Display according to the capability of the receiving terminal that displays multimedia data Becomes possible.
- FIG. 2 is a block diagram showing the overall configuration of 00.
- a communication service providing area is divided into desired sizes, and base stations eX107 to eX110, which are fixed radio stations, are installed in each cell.
- the content supply system eX100 is, for example, an Internet service provider eX102, a telephone network ex104, and a base station eX107-eX110 on the Internet eX101. Via a computer ex 1 11, PDA (personal digital assistant) ex "M2, camera ex 1 13, mobile phone ex 114, camera equipped mobile phone ex 115, etc. You.
- PDA personal digital assistant
- each device may be directly connected to the telephone network ex104 without going through the base stations ex107 to ex110 which are fixed wireless stations.
- the camera eX113 is a device capable of shooting moving images such as a digital video camera.
- the mobile telephone tongue is PDG (Pe r s o n a l D i g i t a l Co mm u n
- CDMA Code Division Multiple Access
- W- CDMA Wideband— Code Division Multiple Access
- GSM GI oba IS system for Mobile Comm unications
- PHS Persona IH andyphone System
- the streaming server eX103 is connected from the camera ex113 via the base station ex109 and the telephone network ex104, and the encoded data captured by the camera ex113 is converted into an MP4 file. Store the file and transmit the file.
- C It is also possible to encode and multiplex a moving image captured by a camera-equipped mobile phone and transmit the multiplexed data to the server ex103.
- the encoding of the captured data may be performed by the camera eX113, or may be performed by a server or the like that performs the data transmission processing.
- moving image data captured by the camera eX116 may be transmitted to the streamer / ex103 via the computer eX111.
- Camera e x116 is a device such as a digital camera capable of shooting still images and moving images.
- the encoding of the moving image data may be performed by the camera eX116 or the computer eX111.
- the encoding process is performed by the LSI eX117 of the computer eX111 and the camera eX116.
- the software for image coding and decoding may be incorporated in any storage medium (CD-ROM, flexible disk, hard disk, etc.) that is a recording medium readable by a computer eX111 or the like.
- the video data may be transmitted by a camera-equipped mobile phone eX115.
- the moving image data at this time is data that has been encoded by the LSI included in the mobile phone eX115.
- the MP4 file stored in advance is distributed from the HTTP streaming server. In other words, the encoded data itself is not packetized and transmitted, but the MP4 file itself is transmitted.
- the scan Bokuriichi timing server e X 1 03 includes a camera e X 1 1 3 is connected via the base station ex 1 09 3 ⁇ 4 telephone network e X 1 04 from the user transmits using the camera ex 1 1 3 c
- MP 4 files 3 ⁇ 4 Do need be made in real-time fragment
- the MP4 file that was converted to the original file would be used. If fragmented MP4 is used, it is possible to use HTTP / TCP and distribute with low delay close to live distribution.
- the content supply system eX100 encodes and streams the content (for example, a video of a live music shot) shot by the user with the camera eX113, power camera exl16, etc. While transmitting to the server eX103, the streaming server eX103 stream-distributes the above content data to the requested client.
- the client include a computer eX111, a PDA ex112, a camera ex113, a mobile phone ex114, etc., capable of decoding encoded data. .
- the content supply system ex 100 can receive and reproduce the encoded data at the client, and further, receive, decode, and reproduce the encoded data in real time at the client, thereby realizing the personal information. This is a system that enables broadcasting.
- a media data display device In reproducing the content, a media data display device, a media data display method, and a media data display program for realizing a media data display method on a computer may be used.
- a computer ex111, a PDAe x112, a camera ex113, a mobile phone ex114, etc. have a media data display program for realizing the media data display method described in the above embodiment. May be.
- a mobile phone will be described as an example.
- FIG. 24 is a diagram showing a mobile phone eX115 using the media data display device of the above embodiment.
- the mobile phone eX115 has an antenna eX201 for transmitting and receiving radio waves to and from the base station ex110, and a camera unit eX203 that can capture images and still images from CCD cameras and other devices.
- a display unit ex 202 such as a liquid crystal display for displaying data obtained by decoding the video captured by the camera unit ex 203, the video received by the antenna e X 201, and the like; a main unit including operation keys e X 204 group; Audio output unit e208 such as a speaker for outputting audio, audio input unit ex205 such as a microphone for inputting audio, data of captured moving image or still image, data of received mail Moving image data or still image Recording media eX207 for storing encoded data or decoded data such as image data, etc., and a slot unit ex for attaching the recording media eX207 to a mobile phone ex115 206.
- Audio output unit e208 such as a speaker for outputting audio
- audio input unit ex205 such as a microphone for inputting audio, data of captured moving image or still image, data of received mail Moving image data or still image
- Recording media eX207 for storing encoded data or decoded data such as image data, etc.
- a slot unit ex for
- the recording medium e 207 is a type of EE PROM (EI ectrica II y E rasable and Programmable Read Only Memory) that is a nonvolatile memory that can be electrically rewritten and erased in a plastic case such as an SD card. It stores a flash memory device.
- EE PROM EI ectrica II y E rasable and Programmable Read Only Memory
- the mobile phone ex 115 has a power supply circuit ex ex, compared to a main control unit e X 31 1 that controls all parts of the main unit including a display unit e X 202 and operation keys ex 204 in a comprehensive manner.
- the reproducing unit ex3O7, the modulation / demodulation circuit unit ex306 and the audio processing unit ex305 are connected to each other via a synchronous bus eX313.
- the power supply circuit eX310 is a digital mobile phone with a camera, eX110, which supplies power to each part from the battery pack when the call end and the power key are turned on by user operation. 5 is activated.
- the mobile phone ex115 receives a voice signal collected by the voice input unit eX205 in the voice call mode based on the control of the main control unit eX311, which includes a CPU, a ROM, a RAM, and the like. It is converted to digital voice data by the voice processing unit eX305, spread spectrum processing by the modulation / demodulation circuit unit eX306, and digital / analog conversion processing and frequency conversion by the transmission / reception circuit unit ex301. After the processing, transmission is performed via the antenna eX201. The mobile phone ex115 also amplifies the received signal received by the antenna eX201 in the voice call mode, performs frequency conversion processing and analog digital conversion processing, and uses the modulation / demodulation circuit section eX306. After performing a spectrum despreading process and converting the analog signal into an analog audio signal by an audio processing unit eX305, this is output via an audio output unit eX208.
- the main control unit eX311 which includes a CPU, a ROM, a
- the text data of the e-mail input by operating the operation key eX204 on the main unit is sent to the main control unit via the operation input control unit eX304. sent to e 3 1 1
- the main control unit ex311 spreads the text data in the modulation and demodulation circuit unit eX306, spreads the spectrum, and performs the digital-to-analog conversion process and the frequency conversion process in the transmission and reception circuit unit eX301, and then executes the antenna e. It transmits to base station ex 110 via X 201.
- the image data captured by the camera unit eX203 is transferred to the image encoding unit eX313 via the camera interface unit eX303.
- the image data captured by the camera unit ex203 is transmitted to the display unit ex202 via the camera interface unit ex3O3 and the LCD control unit ex302. It is also possible to display them directly.
- the image encoding unit eX312 converts the image data supplied from the camera unit eX203 into encoded image data by performing compression encoding, and converts the image data into a demultiplexing unit eX308. Send out.
- the mobile phone ex1 The sound collected by the sound input unit eX205 during imaging in O3 is sent to the demultiplexing unit eX308 as digital sound data via the sound processing unit ex305.
- the demultiplexing unit eX308 multiplexes the encoded image data supplied from the image encoding unit ex312 and the audio data supplied from the audio processing unit eX305 in a predetermined manner, The resulting multiplexed data is subjected to spread spectrum processing in a modulation / demodulation circuit section eX306 and digital-analog conversion processing and frequency conversion processing in a transmission / reception circuit section eX301, followed by an antenna eX2. 0 through 1 to send.
- the received signal received from the base station ex110 via the antenna eX201 is modulated and demodulated by the modem eX306. Performs spectrum despreading processing, and sends the multiplexed data obtained as a result to the demultiplexing unit eX308.
- the demultiplexing unit eX308 separates the multiplexed data to form a coded bit stream of the image data.
- the audio data is divided into an encoded bit stream and the encoded image data is supplied to an image decoding unit ex309 via a synchronous bus eX313, and the audio data is converted to an audio processing unit eX3. 0 to 5
- the image decoding unit eX309 generates the replayed moving image data by decoding the encoded bit stream of the image data, and displays this through the LGD control unit eX302. This is supplied to the section eX202, whereby, for example, the moving image data included in the moving image file linked to the homepage is displayed.
- the image decoding unit eX309 plays a role of the media data display device of the above embodiment.
- the audio processing unit eX305 simultaneously converts the audio data into an analog audio signal, and then supplies the analog audio signal to the audio output unit eX208, thereby linking it to, for example, a home page.
- the audio data included in the moving image file is reproduced.
- a media data display program for realizing the media data display method of the above embodiment may be provided.
- a reproducing apparatus eX40 that reads and decodes multiplexed data of an encoded bit stream recorded on a storage medium ex4O2 such as GD or DVD as a recording medium. 3 also shows the method of the above embodiment. It is possible to implement a media data display device, a media data display method, and a media data display program for realizing the media data display method. In this case, the reproduced video signal is displayed on the monitor eX404.
- the media data display device of the above embodiment is mounted in a set-top box eX07 connected to a cable eX405 for cable television or an antenna ex406 for satellite Z terrestrial broadcasting.
- a configuration in which this is reproduced on a TV monitor eX408 can be considered.
- the media data display device may be incorporated in the television instead of the set top box.
- a signal is received from a broadcasting satellite eX410 or a base station ex107 on a car ex412 having an antenna eX111, and a power navigation provided by the car ex412 is received. It is also possible to play a moving image on a display device such as eX413.
- the image signal can be encoded and multiplexed and recorded on a recording medium.
- a recorder eX420 such as a DVD recorder ⁇ ⁇ for recording an image signal on a DVD disk eX421, and a disk recorder for recording on a hard disk. Furthermore, it can also be recorded on an SD card eX422. If the recorder ex420 has the media data display device of the above embodiment, the image signal recorded on the DVD disc eX421 or the SD card eX422 is reproduced and the monitor e> 408 is displayed. Can be displayed.
- the configuration of the force navigation e X4 13 is, for example, of the configuration shown in FIG. 25, the camera section e X 203, the camera interface section e X 303, and the image encoding section ex 3.
- a configuration excluding 12 is conceivable, and the same can be considered for the computer eX111 or the television (receiver) eX401.
- terminals such as the above-mentioned mobile phone eX114 are not only transmission / reception terminals having both an encoder and a decoder, but also transmission terminals having only an encoder and reception terminals having only a decoder. There are three possible implementation formats.
- the display area conversion unit 21 and the terminal display screen size acquisition unit 22 described in [First Embodiment] with reference to FIG. 1 are the media data display units described with reference to FIG. 4 in [Second Embodiment]. It may be provided in the device 35.
- the display position determination unit 38 displays the priority display area in the video display area set by the display area conversion unit 21.
- the display area conversion unit 21 and the terminal display screen size acquisition unit 22 described in the first embodiment with reference to FIG. 1 are the same as those shown in FIG. 14 or FIG.
- the scaling unit 89 or the scaling unit 102 scales the frame data with respect to the video display area set by the display area conversion unit 21. Therefore, both the moving image display area setting function and the scaling function are realized.
- the scaling unit does not perform scaling based on the determination result from the scaling determination unit, the same effect as in the first embodiment can be obtained.
- the display position determination unit 38 described in the second embodiment with reference to FIG. 4 may be further provided, and when scaling is not performed, the display position may be determined and displayed.
- MP4 files are sometimes used to record multiplexed video, audio, or text data. For example, it is used for recording video and audio captured by cameras such as mobile phones as MP4 files.
- the display area size (Wp, Hp) of the video display area can be set during video recording.
- the maximum value of the image size (Wv, Hv) may be set as the display area size (Wp, Hp). It is possible.
- MP EG—2 V i d e o P an —s c a n may be used in combination with the display of the priority display area using 's t d c.
- the area to be displayed is specified by setting the difference between the center of the video image and the center of the display.
- P ans s G an is used to cut out and display only a specified area in the decoded image frame. That does not display the video other than the specified area, even if there is a margin to 3 ⁇ 4 video display area.
- 'stdc' aims to provide effective display by indicating the center of the area that should be displayed preferentially on a device with a small display screen and no scaling function. That is, the display range is not limited, and if there is room in the video display area, it is possible to display the video on the entire video display area.
- the display of the priority display area using Pan scan and 'stdc' is combined, and if the specified area cut out by Pan scan is larger than the display screen, the cut out area is displayed. It is possible to set where the priority is, and to display it at the center.
- an MP4 file that does not use a fragment has been described.
- a similar display operation can be performed with a fragmented MP4 file.
- the display information is set in each fragment.
- the priority area or the scaling information is used as the display-related information.
- the use of other display-related information is not limited. Also, it may be combined with other display-related information such as display effect settings.
- the specification of the priority area and the specification of the scaling method may be performed in chunk units.
- the samples stored in 'md at' are grouped into units called chunks for one or more samples, and information of chunk units is indicated by associating chunks with sample entries.
- the sample entry is an entry in 'stsd', and stores, for example, initialization information for decoding a sample.
- the sample entry for the video track is called Visua IS ample Entry.
- the association between the chunk and the sample entry is described in 3 ⁇ 4 'StSC'.
- the information (such as 'std G,,' sts, etc.) specifying the priority area and the scaling method described in the above embodiment is not stored immediately below 'stb I' but is stored in the visual sample entry of 'stsd'. May be.
- 's t s c' for each chunk, 's t d c', 's t s
- FIG. 27 the syntax of 'stsI' stored in VisualSampleEntry of 'stsd' is shown using FIG. 27.
- 'Sts shown in Fig. 27 has the same structure as Box described with reference to Fig. 29 (b), and the information specifying the priority area and the scaling method is included in the same Box. It is characterized by points. The syntax will be described below.
- [cons t r a int-fl a g] is information for indicating whether or not to perform display according to the scaling method included in 's t s.
- [seal—method] is information for indicating a scaling method, and a rescaling method is assigned by a value.
- An example of allocation is shown below.
- the value [1] specifies the 'f i I mode.
- the value [2] specifies the 'hidden' mode.
- the value [3] specifies the 'meet' mode.
- the value [4] specifies the 's i i c e_x, mode.
- the value '5' specifies the 's i i c e y' mode.
- an 8-bit area is assigned to [seale-method].
- the value [128 to 255] can be used as the user-specified area, as in the above-described embodiment.
- [dispIay-one-centre-j] and [dispIay-one-centre_y] are the same information as in the above-described embodiment.! ⁇ Information for specifying a priority area. Each information stores the value [0] as a default value.
- the 1 th -30, 31 -1 20, 1 21 -1 80th samples are stored in the first, second, and third chunks, respectively.
- each chunk references the first, second, and third sample entries, respectively.
- the center coordinates of different priority areas or different scaling methods are stored, and it is possible to switch and display them for each chunk.
- a of ISOBase Format (IS 0 / IEC 14446-12) Samp leto G roup standardized in VC File For mat (ISO / IEC 14446-15) 30 AMP ('38') and 53 mp I e G roup D escription Bo x (' sgpd ') may be used to associate chunks with' stdc ',' sts I ', etc.
- the type of Visua IS ample Group entry that stores information such as 'stdc,,' sts, etc. is newly defined.
- a media data display device for displaying multimedia data including a plurality of media including moving images on a display screen
- a moving image display position determining unit that determines a moving image display position that is a display position of the moving image; and a unit that displays the multimedia data, wherein at the moving image display position determined by the moving image display position determining means, Media data display means for displaying videos without changing the image size,
- a media data display device comprising:
- the multimedia data has media display position information indicating a display position of media other than the moving image on the display screen
- the moving image display position determining means determines the moving image display position according to the media display position information
- the media data display device according to attachment 1.
- the moving image display position determining means determines the moving image display position based on the setting of the moving image position setting means
- the media data display device according to attachment 1.
- the multimedia data has priority display area information indicating a priority display area that is an area displayed preferentially in the moving image
- the moving image display position determining means determines the moving image display position based on the priority display area information.
- the media data display device according to attachment 1.
- the multimedia data has moving image display area information indicating a moving image display area in which the moving image can be displayed on the display screen,
- the priority display area information is information indicating the center of the priority display area
- the moving image display position determining unit determines the center of the moving image display area based on the moving image display area information and the priority display area information. Determining the moving image display position so as to be aligned with the center of the priority display area;
- the media data display device according to attachment 4.
- the multimedia data has moving image display area information indicating a moving image display area capable of displaying the moving image on the display screen,
- the moving image display position determining means stipulates the moving image display position so as to include the priority display region and display a moving image in a region as wide as possible.
- a media data display device according to attachment 4 or 5.
- a media data display device for displaying multimedia data including a plurality of media including moving images on a display screen
- Moving image display area setting means for displaying the multimedia data wherein the moving image display area of the predetermined size set by the moving image display area setting means changes an image size of the moving image.
- Media data display means for displaying without A media data display device comprising:
- a media data display device for displaying multimedia data including a plurality of media including moving images on a display screen
- Video display area setting means to set the size of
- a media data display device comprising:
- a media data display device for displaying multimedia data including a plurality of media including moving images on a display screen
- Ring means
- Means for displaying the multimedia data wherein the media data display means for displaying the moving picture rescaled by the scaling means in the moving picture display area;
- a media data display device comprising:
- a media data display device for displaying multimedia data including a plurality of media including moving images on a display screen,
- the moving image display area in which the moving image can be displayed on the display screen is determined to be different from a predetermined size based on the moving image display area information acquired from the multimedia data, the moving image display area is set to the predetermined size.
- Video display area setting means to set the size of
- the scaling of the moving picture is performed based on 'scaling designation information designating a method of scaling the moving picture.
- Means for displaying the multimedia data media data display means for displaying the moving image rescheduled by the scaling means in the moving image display area
- a media data display device comprising:
- a step of displaying the multimedia data wherein at the moving image display position determined by the moving image display position determining step, a media data displaying step of displaying the moving image without changing the image size;
- Video display area setting step to set
- a media data display method comprising: displaying a moving image without changing the image size.
- the moving image display area in which the moving image can be displayed on the display screen is determined to be different from a predetermined size based on the moving image display area information acquired from the multimedia data, the moving image display area is set to the predetermined size.
- a method for displaying media data comprising:
- the moving image display area is set to a predetermined size.
- the video display area setting step to set,
- the moving image display area in which the moving image can be displayed on the display screen is determined to be different from a predetermined size based on the moving image display area information acquired from the multimedia data, the moving image display area is set to the predetermined size.
- scaling of the moving image is performed based on scaling specification information for specifying a method of scaling the moving image.
- a scaling step; displaying the multimedia data; and displaying media data rescaled by the scaling step in the video display area is performed based on scaling specification information for specifying a method of scaling the moving image.
- a media data display program for performing a media data display method of displaying multimedia data including a plurality of media including moving images on a display screen by a computer
- the media data display program causes the computer to:
- a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images by a computer
- the media data display program causes the computer to: When it is determined from the moving image display area information acquired from the multimedia data that the moving image display area in which the moving image can be displayed on the display screen has an arbitrary size, the moving image display area has a predetermined size.
- Video display area setting step to set
- a media data display method comprising:
- a media data display program for performing a media data display method for displaying, on a display screen, multimedia data including a plurality of media including moving images by a computer.
- said 3 ⁇ 4 the moving image display area in the case of moving image display area capable of displaying the moving image during the display screen is determined to differ from the predetermined size predetermined
- a media data display method comprising:
- a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images by a computer
- the media data display program causes the computer to:
- a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images by a computer.
- the media data display program is provided to a computer
- the moving image display area in which the moving image can be displayed on the display screen is determined to be different from a predetermined size based on the moving image display area information acquired from the multimedia data, the moving image display area is set to the predetermined size.
- the media data display device is a media data display device that displays multimedia data including a plurality of media including a moving image on a display screen, and includes a moving image display position determining unit and a media data displaying unit.
- the moving image display position determining means determines a moving image display position that is a moving image display position.
- the media data display means is means for displaying the multimedia data, and displays the moving image at the moving image display position determined by the moving image display position determining means without changing the image size.
- the display position means, for example, a position in the display screen when the entire moving image is displayed, and a position of a display portion in the moving image when a part of the moving image is displayed.
- the multimedia data is, for example, an MP4 file in which video, audio, text, or still images are multiplexed and stored (hereinafter, the same applies in this section).
- the media data display means since the media data display means displays the moving image without changing the image size, the moving image is not displayed in a uniform scale in a certain area, but is displayed in a multimedia format. Displayed at the size intended by the data creator. Also, by displaying moving images without scaling, the processing load on the device is reduced. Further, in this media data display device, the moving image display position determining means determines the moving image display position, so that the moving image is displayed at an appropriate position.
- the media data display device A media data Display device according to 3 ⁇ 4 Appendix 1, the multimedia data has a Meda display position information indicating the display position of the media ⁇ non-video on the display screen ing.
- the moving image display position determining means determines the moving image display position according to the media display position information.
- the medium other than the moving image is, for example, a text or a still image.
- the moving image is displayed at an appropriate position in relation to the display position of the medium other than the moving image.
- the media data display device is the media data display device according to Supplementary Note 1, further including moving image display position setting means capable of setting a moving image display position.
- the moving image display position determining means sets the moving image table based on the setting of the moving image position setting means. Determine the display position.
- the media data display device of the present invention further includes a moving image display position setting means capable of setting a moving image display position, and the moving image display position determining means determines the moving image display position based on the setting of the moving image position setting means. Therefore, for example, when the user sets the moving image display position determining means, the moving image is displayed at the display position intended by the user.
- the media data display device is the media data display device according to Supplementary Note 1, wherein the multimedia data is a priority display area indicating a priority display area that is an area preferentially displayed in a moving image. Have information.
- the moving image display position determining means determines the moving image display position based on the priority display area information.
- the priority display area information specifies, for example, the coordinates of the center of the priority display area.
- the multimedia data has priority display area information
- the moving image display position determining means determines the moving image display position based on the priority display area information.
- the area considered to be highly important is displayed.
- the media data display device according to appendix 5 a media data Display apparatus according to note 4, the multimedia data includes a video display area information indicating the moving image display area capable of displaying video during 3 ⁇ 4 display screen ing.
- the priority display area information is information indicating the center of the priority display area.
- the moving image display position determining means determines the moving image display position so that the centers of the priority display area of the video display area to match based on the priority display area information and 3 ⁇ 4 moving image display area information.
- the priority display area information is information indicating the center of the priority display area
- the moving image display position determining means determines that the center of the moving image display area coincides with the center of the priority display area. Since the moving image display position is determined in advance, the region of the moving image that is considered to be important is displayed appropriately.
- the media data display device is the media data display device according to Supplementary Note 4 or 5, wherein the multimedia data is a moving image display that indicates a moving image display area in which a moving image can be displayed on a display screen. It has area information.
- the moving image display position determining means determines the moving image display position so as to include the priority display region and to display the moving image in a region as wide as possible.
- the moving image display position determining means includes a priority display area.
- the video effectively uses the video display area while reflecting the intention of the creator of the multimedia data. Is displayed.
- the media data display device is a media data display device that displays multimedia data including a plurality of media including moving images on a display screen, and includes a moving image display area setting unit and a media data display unit.
- the moving image display area setting means when it is determined from the moving image display area information acquired from the multimedia data that the moving image display area in which the moving image can be displayed on the display screen is an arbitrary size, Is set to a predetermined size.
- the media data display means is a means for displaying multimedia data, and displays a moving image without changing the image size in a moving image display area of a predetermined size set by the moving image display area setting means.
- the present invention can be applied to an apparatus having scaling means and capable of selecting whether or not to perform scaling.
- the media data display means displays a moving image without changing the image size
- the moving image is not displayed in a uniform scale in a certain area, but is displayed in multimedia data. Displayed at the size intended by the creator of the. Also, by displaying moving images without scaling, the processing load on the device is reduced. Furthermore, since the moving image display area setting means sets the moving image display area to a predetermined size in a predetermined case, the moving image is displayed in a moving image display area appropriate for the media data display device.
- the media data display device is a media data display device that displays multimedia data including a plurality of media including a moving image on a display screen, and includes a moving image display area setting unit and a media data display unit.
- the moving image display area setting means determines whether the moving image display area in which the moving image can be displayed on the display screen is different from the predetermined size based on the moving image display area information obtained from the multimedia data. Set the area to a predetermined size.
- the media data display means is a means for displaying multimedia data, and displays a moving image without changing the image size in a moving image display area of a predetermined size set by the moving image display area setting means.
- the present invention has a scaling means, and The present invention can also be applied to a device that can select whether to perform ringing.
- the media data display means displays the moving image without changing the image size
- the moving image is not displayed in a uniform scale in a certain area, but is displayed in a multimedia format. Displayed at the size intended by the data creator. Also, by displaying a moving image without scaling, the processing load on the device is reduced. Furthermore, since the moving image display area setting means sets the moving image display area to a predetermined size, the moving image is appropriately displayed in the moving image display area used by the user.
- the media data display device is a media data display device that displays, on a display screen, multimedia data including a plurality of media including moving images, the moving image display area setting unit, the scaling unit, and the media data display unit. It is equipped with.
- the moving image display area setting means sets the moving image display area to a predetermined size when it is determined from the moving image display area information acquired from the multimedia data that the moving image display area capable of displaying the moving image on the display screen has an arbitrary size. Set to size.
- the scaling means scales the moving image in the moving image display area of a predetermined size set by the moving image display area setting means based on scaling designation information for specifying a method of scaling the moving image.
- the media data display means is a means for displaying multimedia data, and displays a moving image rescalable by the scaling means in the moving image display area.
- the moving image display area setting means determines that the moving image display area capable of displaying a moving image on the display screen has an arbitrary size from the moving image display area information obtained from the multimedia data. In this case, the moving image display area is set to a predetermined size, and then the scaling means performs moving image scaling on the moving image display area. In this way, the moving image display area setting means sets the moving image display area to a predetermined size, so that the moving image is appropriately displayed in the moving image display area used by the user.
- the media data display device is a media data display device that displays multimedia data including a plurality of media including moving images on a display screen, wherein the moving image display area setting unit, the scaling unit, and the media data Display means It is.
- the moving image display area setting means when it is determined based on the moving image display area information obtained from the multimedia data that the moving image display area capable of displaying a moving image on the display screen is different from a predetermined size, Set to the specified size.
- the scaling means performs scaling of the moving image on the moving image display area of a predetermined size set by the moving image display area setting means based on scaling designation information designating a method of scaling the moving image.
- the media data display means is means for displaying multimedia data, and displays the moving image rescaled by the scaling means in the moving image display area.
- the moving image display area setting means determines that the moving image display area capable of displaying a moving image on the display screen is different from the predetermined size from the moving image display area information obtained from the multimedia data. In this case, the moving image display area is set to a predetermined size, and then the scaling means performs scaling of the moving image on the moving image display area. In this way, the moving image display area setting means sets the moving image display area to a predetermined size, so that the moving image is appropriately displayed in the moving image display area used by the user.
- the media data display method described in Appendix 11 is a media data display method for displaying multimedia data including a plurality of media including moving images on a display screen, and includes a moving image display position determining step and a media data displaying step.
- the moving image display position determining step determines a moving image display position, which is a moving image display position.
- the media data display step is a step of displaying multimedia data, and displays a moving image without changing the image size at the moving image display position determined in the moving image display position determining step.
- a moving image is displayed without changing the image size in the media data display step, so that the moving image is not displayed in a uniform manner in a certain fixed area. , Will be displayed in the size intended by the creator of the multimedia data. Also, by displaying moving images without scaling, the processing load is reduced. Further, in this media data display method, the moving image display position is determined in the moving image display position determination step, so that the moving image is displayed at an appropriate position.
- the media data display method described in Appendix 1 A method of displaying multimedia data on a display screen, comprising a moving image display area setting step and a media data displaying step.
- the moving image display area setting step is to set the moving image display area when it is determined from the moving image display area information obtained from the multimedia data that the moving image display area capable of displaying a moving image on the display screen has an arbitrary size. Set to a predetermined size.
- the media data display step is a step of displaying multimedia data, and displays a moving image without changing the image size in a moving image display area of a predetermined size set in the moving image display area setting step.
- a moving image is displayed without changing the image size in the media data display step, so that the moving image is not displayed in a uniform scale in a certain area. , Will be displayed in the size intended by the creator of the multimedia data. Also, by displaying moving images without scaling, the processing load is reduced. Further, in order to set the moving image display area to a predetermined size in a predetermined case in the moving image display area setting step, the moving image is displayed in an appropriate moving image display area.
- a media data display method for displaying multimedia data including a plurality of media on a display screen, comprising a moving image display area setting step and a media data display step.
- the moving image display area setting step is performed when the moving image display area in which the moving image can be displayed on the display screen is determined to be different from a predetermined size based on the moving image display area information obtained from the multi-dia data. Set the area to a predetermined size.
- the media data display step is a step for displaying multimedia data, and displays a moving image without changing the image size in the moving image display area of a predetermined size set in the moving image display area setting step. .
- the moving image is displayed without changing the image size in the media data displaying step, so that the moving image is not displayed in a uniform scale in a certain area. , Will be displayed in the size intended by the creator of the multimedia data. Also, by displaying moving images without scaling, it is possible to reduce the processing load.
- the moving image display area is set to a predetermined size in the moving image display area setting step, so that the moving image is displayed in the moving image display area of the device used by the user. Will be displayed properly.
- the media data display method described in Appendix 14 is a media data display method for displaying multimedia data including a plurality of media including moving images on a display screen, and includes a moving image display area setting step, a scaling step, and a media data displaying method. Display step.
- the moving image display area setting step when it is determined from the moving image display area information obtained from the multimedia data that the moving image display area capable of displaying a moving image on the display screen has an arbitrary size, the moving image display area is set. Set to the specified size.
- the scaling step performs scaling of the moving image on the moving image display area of a predetermined size set in the moving image display area setting step, based on scaling designation information that specifies a method of scaling the moving image.
- the media data display step is a step of displaying the multimedia data, and displays the moving image rescaled by the scaling step in the moving image display area. .
- the moving image display area setting step determines from the moving image display area information acquired from the multimedia data that the moving image display area in which a moving image can be displayed on the display screen has an arbitrary size.
- the moving image display area is set to a predetermined size, and then the scaling step performs scaling of the moving image on the moving image display area. Since the moving image display area setting step sets the moving image display area to a predetermined size, the moving image is appropriately displayed in the moving image display area used by the user.
- the media data display method described in Appendix 15 is a method of displaying multimedia data including a plurality of media including a moving image on a display screen, and includes a moving image display area setting step, a scaling step, a media data displaying step, Is provided.
- the moving image display area setting step the moving image display area in which the moving image can be displayed on the display screen is determined to be different from the predetermined size based on the moving image display area information obtained from the multimedia data. Set to the specified size.
- the scaling step performs scaling of the moving image in the moving image display area of the predetermined size set in the moving image display area setting step based on the scaling specification information for specifying a method of scaling the moving image.
- the displaying step is a step of displaying the multimedia data, and displays the moving image scaled by the scaling step in the moving image display area.
- the moving image display area setting step determines from the moving image display area information acquired from the multimedia data that the moving image display area capable of displaying a moving image on the display screen is different from the predetermined size.
- the moving image display area is set to a predetermined size, and then a scaling step performs scaling of the moving image on the moving image display area. Since the moving image display area setting step sets the moving image display area to a predetermined size in this manner, the moving image is appropriately displayed in the moving image display area used by the user.
- the media data display program described in Appendix 16 is a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images on a computer.
- the media data display program causes the computer to perform a media data display method including a moving image display position determination step and a media data display step.
- the moving image display position determining step determines a moving image display position, which is a moving image display position.
- the media data display step is a step for displaying multimedia data, and displays a moving image at the moving image display position determined in the moving image display position determining step without changing the image size.
- the moving image is displayed without changing the image size in the media data displaying step, the moving image is not displayed uniformly in a certain area, but is displayed in a multi-layered manner. It is displayed in the size intended by the creator of the media data. Also, by displaying moving images without scaling, the processing load is reduced. Further, in this media data display program, the moving image display position is determined in the moving image display position determining step, so that the moving image is displayed at an appropriate position.
- the media data display program described in Supplementary Note 17 is a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images by a computer.
- the display program provides a computer with a moving image display area setting step, And a media data display method including a media data display step.
- the moving image display area setting step when it is determined from the moving image display area information obtained from the multimedia data that the moving image display area capable of displaying a moving image on the display screen has an arbitrary size, the moving image display area is set. Set to a predetermined size.
- the media data display step is a step of displaying multimedia data, and displays a moving image without changing the image size in a moving image display area of a predetermined size set in the moving image display area setting step.
- a moving image is displayed without changing the image size in the media data display step, so that the moving image is not displayed in a uniform scale in a certain area, but is displayed in a multiple format.
- the movie is displayed at the size intended by the creator of the media data.
- the processing load is reduced.
- the moving image is displayed in an appropriate moving image display area.
- the media data display program according to Supplementary Note 18 is a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images by a computer
- Medellin Iadeta display program causes the computer to perform a media data display method and a 3 ⁇ 4 media de Ichita display step and moving image display area setting step.
- the moving image display area setting step includes, when it is determined based on the moving image display area information obtained from the multimedia data that the moving image display area in which the moving image can be displayed on the display screen is different from a predetermined size, Set the moving image display area to a predetermined size.
- the media data display step is a step of displaying multimedia data, and displays a moving image without changing the image size in the moving image display area of a predetermined size set by the moving image display area setting step. I do.
- the moving image is displayed without changing the image size in the media data displaying step, the moving image is not displayed uniformly in a certain area, but is displayed in a multi-layered manner.
- the movie is displayed in the size intended by the media data creator. Also, display videos without scaling Thus, the processing load is reduced. Further, since the moving image display area is set to a predetermined size in the moving image display area setting step, the moving image is appropriately displayed in the moving image display area of the device used by the user.
- the media data display program is a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images, by using a computer.
- the display program causes the computer to perform a media data display method including a moving image display area setting step, a scaling step, and a media data display step.
- the moving image display area setting step when it is determined from the moving image display area information obtained from the multimedia data that the moving image display area capable of displaying a moving image on the display screen has an arbitrary size, the moving image display area is set. Set to the specified size.
- the scaling step performs scaling of the moving image on the moving image display area of a predetermined size set in the moving image display area setting step, based on scaling designation information that specifies a method of scaling the moving image.
- the media data display step is a step of displaying multimedia data, and displays the moving image rescaled by the scaling step in the moving image display area.
- the moving image display area setting step in the moving image display area setting step, the moving image display area in which a moving image can be displayed in the display screen from the moving image display area information acquired from the multimedia data has an arbitrary size. If it is determined, the moving image display area is set to a predetermined size, and then a scaling step performs scaling of the moving image on the moving image display area. Since the moving image display area setting step sets the moving image display area to a predetermined size in this manner, the moving image is appropriately displayed in the moving image display area used by the user.
- the media data display program described in Supplementary Note 20 is a media data display program for performing a media data display method of displaying, on a display screen, multimedia data including a plurality of media including moving images by a computer.
- the data display program is a computer program that includes a moving image display area setting step, a scaling step, and a media data display step.
- the moving image display area setting step includes, when it is determined that the moving image display area in which a moving image can be displayed on the display screen is different from a predetermined size based on the moving image display area information obtained from the multimedia data, Set the area to the specified size.
- the scaling step performs scaling of the moving image on the moving image display area of the predetermined size set in the moving image display area setting step based on the scaling specification information that specifies a method of scaling the moving image.
- the media data display step is a step for displaying multimedia data, and displays a moving image rescheduled by the scaling step in a moving image display area.
- the moving image display area setting step determines from the moving image display area information acquired from the multimedia data that the moving image display area in which the moving image can be displayed on the display screen is different from the predetermined size.
- the moving image display area is set to a predetermined size, and then a scaling step performs scaling of the moving image on the moving image display area.
- the moving image display area setting means sets the moving image display area to a predetermined size, so that the moving image is appropriately displayed in the moving image display area used by the user.
- the media data display device, the media data display method, and the media data display program according to the present invention can display multimedia data including a plurality of media including moving images on a display screen by various display methods. Useful in the field.
Abstract
Description
Claims
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EP04746716A EP1647968A4 (en) | 2003-07-11 | 2004-06-23 | MEDIA DATA DISPLAY DEVICE, MEDIA DATA DISPLAY METHOD, AND MEDIA DATA DISPLAY PROGRAM |
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CN (1) | CN1823368A (ja) |
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Also Published As
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JP2005049834A (ja) | 2005-02-24 |
CN1823368A (zh) | 2006-08-23 |
EP1647968A4 (en) | 2008-09-17 |
EP1647968A1 (en) | 2006-04-19 |
KR20060029137A (ko) | 2006-04-04 |
US20060139379A1 (en) | 2006-06-29 |
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