JP2009077376A - Reproducing apparatus, and control method of reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily acquire and display a bit rate or a recording mode from recorded data which includes a variable bit rate. <P>SOLUTION: Information about a time interval and a position interval between a k-th I picture and a (k+1)-th I picture is acquired from display timing (PTS) and a storage starting position (TSN) included in I picture information 112 so as to arithmetically operate a bit rate between the two I pictures. Thus, the bit rate can be easily acquired from recorded data with a variable bit rate and the bit rate or the recording mode of the recorded data can be easily displayed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a playback device, a playback device control method, a program, and a storage medium, and more particularly to a technique suitable for use in displaying the bit rate of moving image data.

  A digital video camera has a plurality of recording modes (for example, XP / SP / LP mode, etc.) for determining the upper limit of the bit rate of data at the time of recording a captured moving image. Information on this recording mode is displayed. Since the recording mode is displayed by referring to the information stored in the stream data in the manufacturer's original method or form at the time of shooting, compatibility between manufacturers is not ensured. Therefore, when the recording mode is to be acquired when the manufacturer that generates the recording data is different from the manufacturer, there is a method of acquiring the recording data bit rate and calculating the corresponding recording mode. As described above, for example, Patent Document 1 or Patent Document 2 discloses a method for acquiring the bit rate of recording data.

JP 2002-252832 A JP-A-11-289546

  However, when the recording data has a variable bit rate, in order to acquire the recording mode that determines the upper limit of the bit rate at the time of recording, the bit rate of the portion with the highest bit rate out of the entire recording data must be acquired. I must. In order to acquire a bit rate from recording data with a variable bit rate by the method described in Patent Document 1 or Patent Document 2, it is necessary to perform demultiplexing or the like over the entire recording data. As a result, there is a problem that it takes a lot of time for analysis, and it takes a lot of time to display the bit rate and the recording mode.

  An object of the present invention is to make it possible to easily acquire and display bit rate and recording mode information from variable bit rate recording data relating to a moving image in view of the above-described problems.

The playback device of the present invention is a playback device that plays back the moving image data and displays it on a display unit based on management information including time information and position information regarding a plurality of intra pictures in the moving image data, A determination unit that obtains information of a time interval and a position interval between two intra pictures from the time information and the position information, and determines a bit rate between the two intra pictures, and the determination unit determines And display control means for displaying information relating to the bit rate on the display unit.
Another feature of the playback device of the present invention is a playback device that plays back moving image data and displays it on a display unit, and the playback device is the same as the device that generated the moving image data. The reading means for reading the bit rate information or the recording mode information relating to the moving image data from the management information of the moving image data, the device that generated the moving image data, and the playback device are the same. Display control means for displaying the bit rate information or the recording mode information related to the moving image data on the display unit according to different display methods depending on whether it is present or not identical.

  The control method of the playback device according to the present invention is a playback device that plays back the moving image data and displays it on a display unit based on management information including time information and position information regarding a plurality of intra pictures in the moving image data. A control method for obtaining information on a time interval and a position interval between two intra pictures from the time information and position information, and determining a bit rate between the two intra pictures, and And a display control step of displaying information on the bit rate determined in the determination step on the display unit.

  The program according to the present invention provides each control method for a playback apparatus that plays back the moving image data and displays it on a display unit based on management information including time information and position information regarding a plurality of intra pictures in the moving image data. A program for causing a computer to execute a process, wherein information on a time interval and a position interval between two intra pictures is acquired from the time information and position information, and a bit rate between the two intra pictures is determined. The computer is caused to execute a determination step and a display control step for displaying information on the bit rate determined in the determination step on the display unit.

  The storage medium of the present invention stores the program described above.

  According to the present invention, information on a time interval and a position interval between two intra pictures in moving image data is acquired from management information including time information and position information, and bits between the two intra pictures are acquired. The rate was calculated. Thereby, the bit rate can be easily obtained from the recording data of the variable bit rate. Therefore, it is possible to easily display the recording data bit rate and recording mode.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an example of a recording format of moving image data to be played back by the playback device in the present embodiment, and the recording format includes three types of playback lists, moving image data management information, and moving image data. Become.

  The moving image data (n) 101 is an H.264 image. After being encoded by the H.264 / MPEG4-AVC system, it is multiplexed into a transport stream (hereinafter referred to as TS). The moving image data management information (n) 111 includes I picture information 112 of the moving image data (n) 101 that forms a pair, total information 113 of the moving image data (n) 101, and user information 114. Yes.

  The I picture information 112 includes information about display timing (Presentation Time Stamp (hereinafter referred to as PTS)) that is time information of all I pictures in the moving image data (n) 101. Further, the I picture information 112 includes information about the storage start packet number (Transport Stream Number (hereinafter, TSN)) of the I picture that is the storage start position information of all the I pictures in the moving image data (n) 101. It is. The total information 113 includes information on the display start timing (PTSstart) and end timing (PTSend) of the entire moving image data (n) 101, and the total TS number (TStotal) of the moving image data (n) 101. It is. Note that the I picture information 112 is information that can be acquired without decoding the image, even when the I picture is encoded.

  The user information 114 includes information uniquely given by the device, such as bit rate information when moving image data is captured and a recording mode (XP / SP / LP mode). When the apparatus that generated the moving image data and the playback apparatus are the same (or the same manufacturer), the bit rate and recording mode can be read from the user information 114. The reproduction list 121 includes information about the number of moving image data to be reproduced and the reproduction start PTS and end PTS of each moving image data.

FIG. 2 is a block diagram illustrating a configuration example of the playback device according to the present embodiment.
2, the playback apparatus 100 includes an OSD control unit 200, a display unit 201, a video decoding unit 202, and a demultiplexer 203. The playback apparatus 100 also includes a recording medium control unit 204, a ROM 206, a RAM 207, a processor 208, a bus 209, an adder 210, and a calculation unit 211. Further, a recording medium 205 is mounted on the playback device 100.

  An OSD (On Screen Display) control unit 200 functions as a display control unit, and superimposes information on stream data and the like being reproduced on the TS by the adder 210 and outputs the information to the display unit 201. A display unit 201 is a display unit such as a liquid crystal monitor having an OSD function. The adder 210 adds symbol / character information output from the OSD control unit 200 and video data output from the video decoding unit 202. Display data.

  The video decoding unit 202 is connected to the H.264. H.264 / MPEG-AVC system decoder, which is stored in the RAM 207. The H.264 / MPEG4-AVC elementary stream (hereinafter, ES) is decoded and output to the adder 210. The demultiplexer 203 decomposes the TS stored on the RAM 207 into PES (Packetized Elementary Stream) packets, extracts ESs, and outputs them to the RAM 207.

  The recording medium control unit 204 takes out data from the recording medium 205 and outputs it to the RAM 207. The recording medium 205 is a recording medium such as a hard disk, an optical disk, or a magneto-optical disk. The ROM 206 stores a program for the processor 208 and the like. The RAM 207 includes TS, H.264, and RAM. H.264 / MPEG4-AVC elementary stream (moving image data (n) 101), moving image data management information (n) 111, and reproduction list 121 are temporarily stored. The RAM 207 is used as a work memory for a program operating on the processor 208. The processor 208 controls the entire system based on a program stored in the ROM 206. A bus 209 is a bus connecting each block in the system.

  The calculation unit 211 determines the bit rate by calculation based on the moving image data management information (n) 111 stored in the RAM 207, and sends the bit rate information to the OSD control unit 200. That is, the calculation unit 211 is a bit rate determination unit.

FIG. 9 is a flowchart illustrating an example of a processing procedure for reproducing moving image data and displaying a bit rate in the present embodiment. Each process shown in FIG. 9 is performed under the control of the processor 208.
First, in step S901, it is determined whether or not a reproduction instruction has been given from a user interface (not shown). If there is no reproduction instruction as a result of this determination, the process waits until there is an instruction.

  On the other hand, if it is determined in step S901 that a playback instruction has been received, in step S902, the processor 208 drives the recording medium control unit 204 to read the playback list 121 and the moving image data to be played back from the recording medium 205. Read moving image data management information. Then, the data is stored on the RAM 207 and analyzed by the processor 208.

  Next, in step S903, moving image data to be reproduced is selected from the reproduction list 121, and information about PTS (0) and PTS (n−1) which are display start PTS and end PTS is acquired. When there are a plurality of moving image data to be reproduced, information on PTS (0) and PTS (n−1) is acquired in the order registered in the reproduction list 121.

  Next, in step S904, first, using one moving image data management information, TSN (0) and TSN (n−) indicating the I picture storage start position corresponding to PTS (0) and PTS (n−1). Get information about 1). Similarly, TS corresponding to TSN (0) to TSN (n−1) of moving image data in the TS format is read from the recording medium 205 and temporarily stored in the RAM 207.

  In step S905, the TS temporarily stored in the RAM 207 is once decomposed into PES packets using the demultiplexer 203, and ES is separated. Then, ES is stored in the RAM 207.

  In step S906, the video decoding unit 202 decodes the ES based on a Decode Time Stamp (hereinafter referred to as DTS) included in the PES packet, and outputs the decoded ES to the adder 210. In step S907, the calculation unit 211 determines the bit rate of TS from the moving image data management information stored in the RAM 207 by a method described later.

  Next, in step S908, the OSD control unit 200 causes the adder 210 to superimpose the bit rate information calculated by the calculation unit 211 on the decoded video data (TS) and outputs the superimposed video data (TS) to the display unit 201.

  In step S909, it is determined whether there is any other moving image data registered in the reproduction list 121 that has not been reproduced yet. If there is moving image data that has not been reproduced as a result of this determination, the process returns to step S902. In the example shown in FIG. 1, after the reproduction of the moving image data (0) is completed, the process returns to step S904 to process the next moving image data (1). On the other hand, if it is determined in step S909 that all the moving image data has been reproduced, the process ends.

  Next, a method for calculating the TS bit rate from the moving image data management information by the calculation unit 211 will be described with reference to FIG. FIG. 3 is a diagram showing an example of a bit rate table in the present embodiment. In step S907, a bit rate table is created by calculating the bit rates between the k-th and (k + 1) -th I pictures registered in the I picture information 112 of the moving image data (n) 101. As a specific determination method by calculating the bit rate, for example, the following equation 1 is used.

  Here, Bitrate (k) indicates a bit rate calculation result between k-th (k + 1) -th I pictures. TSN (k) indicates the storage start packet number of the k-th I picture, and is obtained from the I picture information 112 of the moving image data management information (n) 111. PTS (k) indicates the display start timing (90 kHz) of the kth intra picture, and is acquired from the I picture information 112 of the moving image data management information (n) 111.

  TStotal indicates the total number of packets of the moving image data (n) 101, and is acquired from the total information 113 of the moving image data management information (n) 111. PTSend indicates the display end time (90 kHz) of the stream file, and is acquired from the total information 113 of the moving image data management information (n) 111. “N” indicates the total number of I pictures of the moving image data (n) 101. As described above, the bit rate is determined using the information of the time interval and the position interval between the kth I picture and the (k + 1) th I picture.

FIG. 4 is a diagram showing the timing for displaying the bit rate in the present embodiment.
As shown in FIG. 4, the calculation result Bitrate (k) is displayed on the display unit 201 by OSD from the start of displaying the kth I picture until immediately before the start of displaying the (k + 1) th I picture.

  As described above, in this embodiment, it is possible to easily acquire the bit rate without performing demultiplexing of the stream file, and to notify the user of the bit rate information together with the reproduced moving image by display. It becomes.

  In this embodiment, the bit rate is calculated between all intra pictures. However, the same calculation may be performed every m intra pictures. In that case, in FIG. 4, the switching of the bit rate display is similarly performed every m intra pictures.

(Second Embodiment)
In the first embodiment, the bit rate calculation for each intra picture and the display of the calculation result have been described. In the present embodiment, a method of calculating and displaying the maximum bit rate of the entire stream (particularly, a variable bit rate (Variable Bit Rate [hereinafter, VBR]) stream) will be described. Note that the system configuration and the procedure up to the creation of the bit rate table are the same as those in the first embodiment, and a description thereof will be omitted.

FIG. 5 is a flowchart showing an example of a processing procedure for calculating the maximum bit rate of the stream file from the bit rate table in the present embodiment. Each process shown in FIG. 5 is performed under the control of the processor 208.
First, in step S501, processing is started. In step S502, the variable j indicating the end row of the bit rate table and the area “MaxBitRate” for storing the obtained maximum bit rate are initialized to “0”.

  Next, the maximum bit rate in the bit rate table is selected in the repetitive processing of steps S503 to S506. First, in step S503, it is determined whether or not the variable j is smaller than N shown in FIG. If the result of this determination is less than N, the process proceeds to step S504. On the other hand, if the result of determination in step S503 is equal to N, the process proceeds to step S507.

  Next, in step S504, it is determined whether or not Bitrate (j) is a bit rate interval that is greater than the maximum bit rate up to the (j−1) th bit rate table. As a result of this determination, if it is larger, “MaxBitRate” is updated in step S505, and the process proceeds to step S506. On the other hand, if the result of determination in step S504 is equal or smaller, the process proceeds to step S506.

  Next, in step S506, the variable j is incremented, and the process returns to step S503. In this way, the process is repeated until the end of the bit rate table. In step S507, the value stored in “MaxBitRate” is displayed on the OSD as the maximum bit rate of the stream file during the display period of the stream. In step S508, the process ends.

  As described above, in this embodiment, even when a stream has a variable bit rate, the maximum bit rate can be easily obtained and notified to the user without performing demultiplexing or the like of the stream file. It becomes possible.

(Third embodiment)
In this embodiment, based on the maximum bit rate calculated in the second embodiment, a recording mode (for example, XP / SP / LP mode) that determines the upper limit bit rate when a video camera captures and records a stream. ) Will be described. Note that the system configuration and the process of acquiring the maximum bit rate “MaxBitRate” of the stream are the same as those in the second embodiment, and thus the description thereof is omitted.

FIG. 6 is a diagram illustrating an example of the relationship between the maximum bit rate and the recording mode displayed by the OSD in the present embodiment.
In FIG. 6, if the acquisition result of “MaxBitRate” is 13 Mbps or more, “XP” corresponding to the corresponding recording mode is displayed by OSD during the display period of the stream. Similarly, “SP” is displayed in OSD if it is 5 Mbps or more and less than 13 Mbps, and “LP” is displayed in OSD if it is less than 5 Mbps.

  As described above, in the present embodiment, the recording mode used at the time of shooting can be easily displayed on the OSD during playback. Note that the display contents in the OSD and the relationship with MaxBitRate are not limited to the example shown in FIG. 6 and may be anything as long as the recording mode can be displayed.

(Fourth embodiment)
In the first to third embodiments, the method for calculating and displaying the bit rate from the moving image data management information has been described. In the present embodiment, bit rate information can be pre-multiplexed and recorded in moving image data, and the bit rate corresponding to both when the bit rate information is multiplexed and when not multiplexed is acquired. The display method will be described. Since the system configuration is the same as that of the first embodiment, description thereof is omitted.

  As a method for assigning the recording bit rate to the stream file (moving image data), the following method is used. For example, H.M. In the H.264 / MPEG4-AVC format, it is assumed that an identifier indicating storage of a bit rate and a bit rate [Mbps] are stored in “User_data_unregistered ()” in “SEI_massage ()” of moving image data.

  Next, acquisition and display of bit rate information will be described. FIG. 7 is a flowchart illustrating an example of a processing procedure for acquiring and displaying bit rate information in the present embodiment. Each process shown in FIG. 7 is performed under the control of the processor 208.

  First, when processing is started in step S701, in step S702, the processor 208 functions as a detection unit, and checks whether there is an identifier in “User_data_unregistered ()”. If it is determined that there is an identifier, the process proceeds to step S703. In step S703, the bit rate [Mbps] of the stream stored in “User_data_unregistered ()” is acquired and sent to the OSD control unit 200. Next, in step S704, the OSD control unit 200 determines that the color for displaying the bit rate is black.

  On the other hand, if there is no identifier as a result of the confirmation in step S702, “MaxBitRate” is acquired in the same procedure as in the second embodiment and sent to the OSD control unit 200 in step S705. Next, in step S706, the OSD control unit 200 determines the color for displaying the bit rate as gray. Next, in step S707, the OSD control unit 200 displays the bit rate in the OSD according to the stream display in the color determined in step S704 or S706. In step S708, the process ends.

  As described above, in this embodiment, the bit rate can be acquired regardless of whether or not the bit rate information is given at the time of recording. In addition, the display format can be changed and notified to the user according to the route for acquiring the bit rate.

  In the present embodiment, the color for displaying the bit rate is changed according to the path for acquiring the bit rate. On the other hand, a different display format may be used, such as blinking / not displaying the OSD or adding / not adding a frame when displaying the bit rate. In this embodiment, the bit rate is stored in the moving image data, but may be stored in the user information 114 in the moving image data management information (n) 111, for example.

(Fifth embodiment)
In the present embodiment, a case will be described in which a recording mode (such as XP / SP / LP mode) when shooting and recording with a video camera can be multiplexed and recorded on moving image data. A description will now be given of how the recording mode is displayed corresponding to both the case where the recording mode information is multiplexed and the case where the recording mode information is not multiplexed. Since the system configuration is the same as that of the third embodiment, description thereof is omitted.

  As a method for assigning a recording mode to a stream file (moving image data), the following method is used. For example, H.M. In the H.264 / MPEG4-AVC format, an identifier indicating recording mode storage and recording mode information [XP / SP / LP] are stored in “User_data_unregistered ()” in “SEI_massage ()”.

  Next, acquisition and display of recording mode information will be described. FIG. 8 is a flowchart illustrating an example of a processing procedure for acquiring and displaying recording mode information in the present embodiment. Each process shown in FIG. 7 is performed under the control of the processor 208.

  First, when processing is started in step S801, in step S802, the processor 208 functions as a detection unit, and checks whether there is an identifier in “User_data_unregistered ()”. If it is determined that there is an identifier, the process proceeds to step S803. In step S 803, the stream recording mode information [XP / SP / LP] stored in “User_data_unregistered ()” is acquired and sent to the OSD control unit 200. In step S804, the OSD control unit 200 determines that the color for displaying the recording mode is black.

  On the other hand, if there is no identifier as a result of the confirmation in step S802, the recording mode is acquired in the same procedure as in the third embodiment and sent to the OSD control unit 200 in step S805. In step S806, the OSD control unit 200 determines the color for displaying the recording mode as gray. Next, in step S807, the OSD control unit 200 displays the recording mode in the OSD in accordance with the stream display in the color determined in step S804 or S806. In step S808, the process ends.

  As described above, in the present embodiment, the recording mode information can be acquired regardless of whether or not the recording mode information is given at the time of recording. In addition, the user can be notified by changing the display format according to the route for acquiring the recording mode.

  In the present embodiment, the color of the recording mode is changed according to the path for acquiring the bit rate. On the other hand, different methods may be used for the display format such as blinking / not displaying the OSD, or adding / not adding a frame when displaying the recording mode. In this embodiment, the recording mode information is stored in the moving image data, but may be stored in the user information 114 in the moving image data management information (n) 111, for example.

(Sixth embodiment)
In this embodiment, regarding the playback index display (screen for introduction to stream file playback using reduced images), acquisition of bit rates corresponding to both when the bit rate information is multiplexed and when not multiplexed. The display method will be described. Since the system configuration is the same as that of the fourth embodiment, description thereof is omitted.

  As a method for assigning the recording bit rate to the stream file (moving image data), the following method is used. For example, H.M. In the H.264 / MPEG4-AVC format, it is assumed that an identifier indicating storage of a bit rate and a bit rate [Mbps] are stored in “User_data_unregistered ()” in “SEI_massage ()” of moving image data.

  Next, acquisition and display of reduced images (representative images) and bit rate information will be described. The reduced image for index display generates representative image data by decoding the intra picture arranged at the head of each stream file by the video decoding unit 202 and then reducing and aligning the image on the RAM 207 by the processor 208.

FIG. 10 is a flowchart illustrating an example of a processing procedure for acquiring and displaying bit rate information in the present embodiment. Each process illustrated in FIG. 10 is performed under the control of the processor 208.
First, when the process is started in step S1001, in step S1002, the processor 208 functions as a detection unit, and checks whether there is an identifier in “User_data_unregistered ()” of the target intra picture. If it is determined that there is an identifier, the process proceeds to step S1003. In step S1003, the bit rate [Mbps] of the stream stored in “User_data_unregistered ()” is acquired and sent to the OSD control unit 200. In step S1004, the OSD control unit 200 determines that the color for displaying the bit rate is black.

  On the other hand, if there is no identifier as a result of the confirmation in step S1002, “MaxBitRate” is acquired and sent to the OSD control unit 200 in step S1005 by the same procedure as in the second embodiment. In step S1006, the OSD control unit 200 determines the color for displaying the bit rate as gray. In step S1007, the OSD control unit 200 superimposes and displays the bit rate on the reduced image of the corresponding stream file in the reproduction index display using the color determined in step S1004 or S1006. In step S1008, the process ends.

  Further, when the processing of steps S1001 to S1008 is repeated several times, a playback index display screen is formed in which display of bit rate information is added to each of the reduced images of a plurality of stream files. As a display form of the bit rate information, it may be displayed superimposed on the corresponding representative image, or may be displayed side by side with the corresponding representative image.

  As described above, in this embodiment, the bit rate can be acquired regardless of whether or not the bit rate information is given at the time of recording. Then, the acquired bit rate information can be displayed on the index display by the display unit 201. In addition, the display format can be changed and notified to the user according to the route for acquiring the bit rate.

  In the present embodiment, the color for displaying the bit rate is changed according to the path for acquiring the bit rate. On the other hand, a different display format may be used, such as blinking / not displaying the OSD or adding / not adding a frame when displaying the bit rate. In this embodiment, the bit rate is stored in the moving image data, but may be stored in the user information 114 in the moving image data management information (n) 111, for example.

(Seventh embodiment)
In the present embodiment, with respect to playback index display (screen for introducing content playback using reduced images), acquisition and display of recording modes corresponding to both when the recording mode is multiplexed and when it is not multiplexed A method will be described. Since the system configuration is the same as that of the fifth embodiment, description thereof is omitted.

  As a method for assigning a recording mode to a stream file (moving image data), the following method is used. For example, H.M. In the H.264 / MPEG4-AVC format, an identifier indicating recording mode storage and recording mode information [XP / SP / LP] are stored in “User_data_unregistered ()” in “SEI_massage ()”.

  Next, acquisition and display of reduced images (representative images) and recording modes will be described. The reduced image for index display generates representative image data by decoding the intra picture arranged at the head of each stream file by the video decoding unit 202 and then reducing and aligning the image on the RAM 207 by the processor 208.

FIG. 11 is a flowchart illustrating an example of a processing procedure for acquiring and displaying bit rate information in the present embodiment. Each process shown in FIG. 11 is performed under the control of the processor 208.
First, when processing is started in step S1101, in step S1102, the processor 208 functions as a detection unit, and checks whether there is an identifier in “User_data_unregistered ()”. If it is determined that there is an identifier, the process proceeds to step S1103. In step S <b> 1103, the stream recording mode information [XP / SP / LP] stored in “User_data_unregistered ()” is acquired and sent to the OSD control unit 200. In step S1104, the OSD control unit 200 determines that the color for displaying the recording mode is black.

  On the other hand, if there is no identifier as a result of the confirmation in step S1102, the recording mode is acquired in the same procedure as in the third embodiment and sent to the OSD control unit 200 in step S1105. In step S1106, the OSD control unit 200 determines that the color for displaying the recording mode is gray. Next, in step S1107, the OSD control unit 200 superimposes and displays the recording mode on the reduced image of the corresponding stream file in the reproduction index display with the color determined in step S1104 or S1106. In step S1108, the process ends.

  Further, when the processing of steps S1101 to S1108 is repeated several times, a playback index display screen is formed in which display of recording mode information is added to reduced images of a plurality of stream files. As a display mode of the recording mode information, it may be displayed superimposed on the corresponding representative image, or may be displayed side by side with the corresponding representative image.

  As described above, in the present embodiment, the recording mode information can be acquired regardless of whether or not the recording mode information is given at the time of recording. Then, the acquired recording mode information can be displayed on the index display by the display unit 201. In addition, the user can be notified by changing the display format according to the route for acquiring the recording mode.

  In the present embodiment, the color of the recording mode is changed according to the path for acquiring the bit rate. On the other hand, different methods may be used for the display format such as blinking / not displaying the OSD, or adding / not adding a frame when displaying the recording mode. In this embodiment, the recording mode information is stored in the moving image data, but may be stored in the user information 114 in the moving image data management information (n) 111, for example.

(Other embodiments according to the present invention)
Each unit constituting the playback apparatus and each process of the control method of the playback apparatus in the embodiment of the present invention described above can be realized by operating a program stored in a RAM or ROM of a computer. This program and a computer-readable storage medium storing the program are included in the present invention.

  In addition, the present invention can be implemented as, for example, a system, apparatus, method, program, storage medium, or the like. Specifically, the present invention may be applied to a system including a plurality of devices. The present invention may be applied to an apparatus composed of a single device.

  Note that the present invention supplies a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 5 and 7 to 11) directly or remotely to a system or apparatus that realizes the functions of the above-described embodiments. Including cases. This includes the case where the system or the computer of the apparatus is also achieved by reading and executing the supplied program code.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, and the like.

  Examples of the storage medium for supplying the program include a flexible disk, a hard disk, an optical disk, and a magneto-optical disk. Further, there are MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card, ROM, DVD (DVD-ROM, DVD-R) and the like.

  As another program supply method, there is a method of connecting to a homepage on the Internet using a browser of a client computer. It can also be supplied by downloading the computer program itself of the present invention or a compressed file including an automatic installation function from a homepage to a storage medium such as a hard disk.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  As another method, the program of the present invention is encrypted, stored in a recording medium such as a CD-ROM, distributed to users, and encrypted from a homepage via the Internet to users who have cleared predetermined conditions. Download the key information to be solved. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  Further, the functions of the above-described embodiments are realized by the computer executing the read program. Furthermore, based on the instructions of the program, an OS or the like running on the computer performs part or all of the actual processing, and the functions of the above-described embodiments can be realized by the processing.

  As another method, a program read from a storage medium is first written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Then, based on the instructions of the program, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are also realized by the processing.

FIG. 3 is a diagram illustrating an example of a recording format of moving image data that is played back by the playback device in the first embodiment of the present invention. It is a block diagram which shows the structural example of the reproducing | regenerating apparatus in the 1st Embodiment of this invention. It is a figure which shows an example of the bit rate table | surface in the 1st Embodiment of this invention. It is a figure which shows the timing which displays a bit rate in the 1st Embodiment of this invention. 10 is a flowchart illustrating an example of a processing procedure for calculating a maximum bit rate of a stream file from a bit rate table in the second embodiment of the present invention. It is a figure which shows an example of the relationship between the maximum bit rate and the recording mode displayed by OSD in the 3rd Embodiment of this invention. It is a flowchart which shows an example of the process sequence for acquiring and displaying bit rate information in the 4th Embodiment of this invention. 14 is a flowchart illustrating an example of a processing procedure for acquiring and displaying recording mode information in the fifth embodiment of the present invention. 5 is a flowchart illustrating an example of a processing procedure for acquiring and displaying bit rate information in the first embodiment of the present invention. It is a flowchart which shows an example of the process sequence for acquiring and displaying bit rate information in the 6th Embodiment of this invention. 16 is a flowchart illustrating an example of a processing procedure for acquiring and displaying recording mode information in the seventh embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Playback apparatus 200 OSD control part 201 Display part 202 Video decoding part 203 Demultiplexer 204 Recording medium control part 205 Recording medium 206 ROM
207 RAM
208 processor 209 bus 210 adder 211 arithmetic unit

Claims (17)

A playback device that plays back the moving image data and displays it on a display unit based on management information including time information and position information regarding a plurality of intra pictures in the moving image data,
Determining means for obtaining information of a time interval and a position interval between two intra pictures from the time information and the position information, and determining a bit rate between the two intra pictures;
And a display control means for displaying information relating to the bit rate determined by the determination means on the display section.   The playback apparatus according to claim 1, wherein the display control unit displays information on the bit rate determined by the determination unit on the display unit. The determination unit determines a bit rate between a plurality of intra pictures,
2. The display control unit displays information on a maximum bit rate on the display unit among a plurality of bit rates determined between the plurality of intra pictures by the determination unit. The playback device described in 1. The determination unit determines a bit rate between a plurality of intra pictures,
The display control means displays information on a recording mode corresponding to the largest bit rate among the plurality of bit rates determined among the plurality of intra pictures by the determination means on the display unit. The playback apparatus according to claim 1. Detecting means for detecting whether bit rate information or recording mode information is multiplexed in the moving image data;
If the bit rate information or the recording mode information is multiplexed as a result of the detection by the detecting unit, the display control unit displays the multiplexed bit rate information or the recording mode information on the display unit. The playback apparatus according to claim 1.   The display control means displays the multiplexed bit rate information or the recording mode information, and displays the bit rate information determined by the determining means or the recording mode information corresponding to the determined bit rate. 6. The playback apparatus according to claim 5, wherein the display format is changed depending on the case. Further comprising generating means for generating representative image data representing the moving image data;
The display control means displays the bit rate information or the recording mode information on an index display formed using the representative image data generated by the generating means. The playback device described in 1. A control method of a playback device for playing back the moving image data and displaying it on a display unit based on management information including time information and position information regarding a plurality of intra pictures in the moving image data,
A determination step of obtaining information of a time interval and a position interval between two intra pictures from the time information and the position information, and determining a bit rate between the two intra pictures;
A display control step of displaying information on the bit rate determined in the determination step on the display unit.   9. The method for controlling a playback device according to claim 8, wherein in the display control step, information on the bit rate determined in the determination step is displayed on the display unit. In the determination step, a bit rate is determined between a plurality of intra pictures,
9. The display control step includes displaying information on a maximum bit rate among the plurality of bit rates determined between the plurality of intra pictures in the determination step on the display unit. The control method of the reproducing | regenerating apparatus as described in any one of. In the determination step, a bit rate is determined between a plurality of intra pictures,
In the display control step, recording mode information corresponding to the largest bit rate among the plurality of bit rates determined between the plurality of intra pictures in the determination step is displayed on the display unit. A method for controlling a playback apparatus according to claim 8. A detection step of detecting whether bit rate information or recording mode information is multiplexed in the moving image data;
In the display control step, when bit rate information or recording mode information is multiplexed as a result of detection in the detection step, the multiplexed bit rate information or recording mode information is displayed on the display unit. The method for controlling a playback apparatus according to claim 8.   In the display control step, the multiplexed bit rate information or the recording mode information is displayed, and the bit rate information determined in the determination step or the recording mode information corresponding to the determined bit rate is displayed. The method for controlling a playback apparatus according to claim 12, wherein the display format is changed. A generation step of generating representative image data representing the moving image data;
14. The display control step, wherein the bit rate information or the recording mode information is displayed on an index display formed using the representative image data generated in the generation step. The control method of the reproducing | regenerating apparatus as described in any one of. Based on management information including time information and position information related to a plurality of intra pictures in moving image data, causes a computer to execute each step of a control method of a reproducing apparatus that reproduces the moving image data and displays it on a display unit A program,
A determination step of obtaining information of a time interval and a position interval between two intra pictures from the time information and the position information, and determining a bit rate between the two intra pictures;
A program for causing a computer to execute a display control step of displaying information on the bit rate determined in the determination step on the display unit.   A computer-readable storage medium storing the program according to claim 15. A playback device for playing back moving image data and displaying it on a display unit,
When the apparatus that generates the moving image data and the playback apparatus are the same, a reading unit that reads the bit rate information related to the moving image data or the recording mode information from the management information of the moving image data;
Bit rate information or recording mode information related to the moving image data is displayed on the display unit by different display methods depending on whether the device that generated the moving image data is the same as the playback device. A playback apparatus comprising display control means for displaying.

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