JP2009193642A - Disk, authoring method, reproduction control method, and information processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve a configuration capable of resume reproduction even when running a reproduction application not having a resume function, such as a BDJ application. <P>SOLUTION: When running a BDJ application (BDJ application) specified by the BDJ title prescribed on a Blu-ray Disc (R) for example, this reproduction control method records the disk identifier or reproduction title information together with the reproduction information including the reproducing position information in the register periodically or when stopping reproduction. It obtains the reproduction information including the reproducing position information recorded in the register when resuming the reproduction, and executes resume processing after verifying data. Thus, the resume processing can be performed even when running an application not having a resume function. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disc, an authoring method, a reproduction control method, and an information processing apparatus. More specifically, the present invention relates to a disc for executing resume reproduction that resumes reproduction from the reproduction stop position, an authoring method, a reproduction control method, and an information processing apparatus.

  Recently, an optical disc such as a DVD (Digital Versatile Disc) is often used as a content recording medium. For example, many DVD playback apparatuses, such as video cameras, have a resume function. That is, when playback is stopped during DVD playback, the playback stop position is stored in the memory, and playback stop position information stored in the memory is read when playback is resumed, and playback from the playback stop position is executed. The resume function is described in Patent Document 1, for example.

  In order to realize this resume function, the playback device stops playback based on the detection of the user's playback stop instruction, acquires the playback stop position, stores it in the memory, and based on the user's playback start instruction. Thus, it is necessary to execute a process of acquiring reproduction stop position information from the memory, determining a reproduction start position based on the acquired information, and performing reproduction.

  Such processing is performed by a playback application executed in the playback device. However, when playback is performed by a playback application that does not have such a function, it is impossible to realize a resume function. Become.

  For example, recently, Blu-ray Disc (registered trademark) is used as a medium that realizes recording and reproduction of high-definition image data, but also for applications that reproduce content recorded on Blu-ray Disc (registered trademark). There are various types, and the current situation is that an application having a resume function and an application not having a resume function are used together.

For example, a playback application such as movie content according to the BD format defined as the Blu-ray Disc (registered trademark) format has the resume function described above, but the Java (registered trademark) content A BDJ application (BDJ application), which is a playback application applied to playback, does not have a resume function, so that even if a user's stop instruction is input, recording processing to the memory at the stop position is not executed. Since only playback stop is executed, there is a problem that playback from the playback stop position cannot be automatically executed when restarting playback.
JP 2002-1557859 A

  The present invention has been made in view of the above problems, and a disc capable of realizing a resume function even in a playback process by a playback application that does not have a resume function, an authoring method, and An object is to provide a reproduction control method and an information processing apparatus.

The first aspect of the present invention is:
A disc on which playback control information for causing the playback device to execute the following playback control steps is recorded,
The reproduction control step includes
In the data reproduction process by executing the application recorded on the disc in the reproduction control unit of the reproduction device, the reproduction control unit is configured to record reproduction information including reproduction position information at a predetermined interval in the register of the reproduction device. Steps to be performed;
When the reproduction is resumed after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire the reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. There is a step characterized by including a step of making a disc.

  Further, in one embodiment of the disc of the present invention, the playback control information further includes a disc-specific ID that is an identifier of the disc when the data is played back by execution of the application in the playback control unit. And recording the disc identifier recorded in the register and the identifier of the disc loaded in the device at the time of resuming the reproduction after the data reproduction is stopped in the reproduction device. And executing a resumption process of starting reproduction from a reproduction position indicated by the reproduction position information by executing reproduction and obtaining reproduction information from the register when they match.

  Furthermore, in one embodiment of the disc of the present invention, the disc is a Blu-ray Disc (registered trademark), and the application executed by the playback control unit is a BDJ defined in the Blu-ray Disc (registered trademark). It is a BDJ application (BDJ application) specified by a movie title.

Furthermore, the second aspect of the present invention provides
A disc on which playback control information for causing the playback device to execute the following playback control steps is recorded,
The reproduction control step includes
In the playback control unit of the playback device, during playback of data by executing the application recorded on the disc, playback including playback position information is input to the playback control unit in response to a playback stop instruction input from the user interface of the playback device Executing a process of recording information in a register of the playback device;
When resuming reproduction after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. There is a step characterized by including a step of making a disc.

  Further, in one embodiment of the disc of the present invention, the playback control information further includes a disc-specific ID that is an identifier of the disc when the data is played back by execution of the application in the playback control unit. And the disc identifier recorded in the register and the disc identifier attached to the playback device when the playback is resumed after the playback of the data is stopped in the playback device. And performing a resume process for obtaining reproduction information from the register and starting reproduction from the reproduction position indicated by the reproduction position information when they match.

  Furthermore, in one embodiment of the disc of the present invention, the disc is a Blu-ray Disc (registered trademark), and the application executed by the playback control unit is a BDJ defined in the Blu-ray Disc (registered trademark). It is a BDJ application (BDJ application) designated by an interactive title.

Furthermore, the third aspect of the present invention provides
An authoring method for executing, in an information processing device, authoring of a disc on which playback control information for causing a playback device to execute the following playback control step is provided.
The reproduction control step includes
In the data reproduction process by executing the application recorded on the disc in the reproduction control unit of the reproduction device, the reproduction control unit is configured to record reproduction information including reproduction position information at a predetermined interval in the register of the reproduction device. Steps to be performed;
When resuming reproduction after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. A disc authoring method comprising the steps of:

  Furthermore, in an embodiment of the authoring method of the present invention, the playback control information is further transmitted to the playback control unit during data playback by execution of the application in the playback control unit. Recording the ID in the register, and at the time of resuming the reproduction after the reproduction of the data in the reproducing apparatus, the reproduction control unit causes the disk identifier recorded in the register and the identifier of the disk mounted on the apparatus to And performing a resume process of starting reproduction from the reproduction position indicated by the reproduction position information when the two pieces of information coincide with each other.

  Furthermore, in one embodiment of the authoring method of the present invention, the disc is a Blu-ray Disc (registered trademark), and an application executed by the playback control unit is defined in the Blu-ray Disc (registered trademark). It is a BDJ application (BDJ application) specified by a BDJ movie title.

Furthermore, the fourth aspect of the present invention provides
An authoring method for executing, in an information processing device, authoring of a disc on which playback control information for causing a playback device to execute the following playback control step is provided.
The reproduction control step includes
In the playback control unit of the playback device, during playback of data by executing the application recorded on the disc, playback including playback position information is input to the playback control unit in response to a playback stop instruction input from the user interface of the playback device Executing a process of recording information in a register of the playback device;
When the reproduction is resumed after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire the reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. The authoring method is characterized by including a step of generating.

  Furthermore, in an embodiment of the authoring method of the present invention, the playback control information is further transmitted to the playback control unit during data playback by execution of the application in the playback control unit. A step of recording an ID in the register; and at the time of resuming reproduction after the reproduction of the data in the reproducing apparatus is resumed, the reproduction controller is provided with a disk identifier recorded in the register and a disk attached to the reproducing apparatus. And a step of executing a resumption process of starting reproduction from a reproduction position indicated by the reproduction position information by performing reproduction with an identifier and obtaining reproduction information from the register when they match. .

  Furthermore, in one embodiment of the authoring method of the present invention, the disc is a Blu-ray Disc (registered trademark), and an application executed by the playback control unit is defined in the Blu-ray Disc (registered trademark). It is a BDJ application (BDJ application) specified by a BDJ interactive title.

Furthermore, the fifth aspect of the present invention provides
A playback control method for executing playback control processing of a disc in a playback device,
The playback control unit of the playback device has a playback control step of executing playback control processing according to the playback control information recorded on the disc,
The reproduction control step includes
Executing a process of recording reproduction information including reproduction position information at a predetermined interval in a register of the reproduction apparatus at the time of data reproduction processing by execution of an application recorded on the disc in the reproduction control unit;
Replay control including a step of performing a resume process of acquiring reproduction information recorded in the register and starting reproduction from a reproduction position indicated by the reproduction position information when resuming reproduction after the reproduction of the data is stopped Is in the way.

  Further, in one embodiment of the playback control method of the present invention, the playback control information is further transmitted to the playback control unit when the data is played back by executing the application in the playback control unit. And the disc identifier recorded in the register and the identifier of the disc attached to the apparatus when the reproduction is resumed after the reproduction of the data is stopped in the reproducing apparatus. And performing a resume process of obtaining reproduction information from the register and starting reproduction from the reproduction position indicated by the reproduction position information when they match.

  Furthermore, in an embodiment of the playback control method of the present invention, the disc is a Blu-ray Disc (registered trademark), and an application executed by the playback control unit is defined in the Blu-ray Disc (registered trademark). It is a BDJ application (BDJ application) designated by a BDJ movie title.

Furthermore, the sixth aspect of the present invention provides
A playback control method for executing playback control processing of a disc in a playback device,
The playback control unit of the playback device has a playback control step of executing playback control processing according to the playback control information recorded on the disc,
The reproduction control step includes
At the time of data reproduction processing by executing the application recorded on the disc in the reproduction control unit, reproduction information including reproduction position information is stored in the register of the reproduction device in response to a reproduction stop instruction input from the user interface of the reproduction device. Executing the process of recording; and
Replay control including a step of performing a resume process of acquiring reproduction information recorded in the register and starting reproduction from a reproduction position indicated by the reproduction position information when resuming reproduction after the reproduction of the data is stopped Is in the way.

  Furthermore, in an embodiment of the playback control method of the present invention, the playback control information further includes a disc-specific ID that is an identifier of the disc in the register at the time of data playback by execution of the application in the playback control unit. At the time of resuming playback after stopping the playback of the data in the playback device in the recording device, the disc identifier recorded in the register is compared with the identifier of the disc mounted on the playback device to match. And performing a resume process for acquiring reproduction information from the register and starting reproduction from the reproduction position indicated by the reproduction position information.

  Furthermore, in an embodiment of the playback control method of the present invention, the disc is a Blu-ray Disc (registered trademark), and an application executed by the playback control unit is defined in the Blu-ray Disc (registered trademark). It is a BDJ application (BDJ application) designated by a BDJ interactive title.

Furthermore, the seventh aspect of the present invention provides
An information processing apparatus that executes a disc playback process,
According to the playback control information recorded on the disc, a playback control unit that executes playback control processing,
The reproduction control unit
At the time of data reproduction processing by execution of an application recorded on the disc in the reproduction control unit, a process of recording reproduction information including reproduction position information at regular intervals in a register of the reproduction device is performed.
In the information processing apparatus, when the reproduction is resumed after the reproduction of the data is stopped, the reproduction information recorded in the register is acquired, and the resume process of starting reproduction from the reproduction position indicated by the reproduction position information is performed. .

Furthermore, the eighth aspect of the present invention provides
An information processing apparatus that executes a disc playback process,
According to the playback control information recorded on the disc, a playback control unit that executes playback control processing,
The reproduction control unit
At the time of data reproduction processing by executing the application recorded on the disc in the reproduction control unit, reproduction information including reproduction position information is stored in the register of the reproduction device in response to a reproduction stop instruction input from the user interface of the reproduction device. Execute the process to record,
In the information processing apparatus, when the reproduction is resumed after the reproduction of the data is stopped, the reproduction information recorded in the register is acquired, and the resume process of starting reproduction from the reproduction position indicated by the reproduction position information is performed. .

  Other objects, features, and advantages of the present invention will become apparent from a more detailed description based on embodiments of the present invention described later and the accompanying drawings. In this specification, the system is a logical set configuration of a plurality of devices, and is not limited to one in which the devices of each configuration are in the same casing.

  According to the configuration of an embodiment of the present invention, in an information processing apparatus that executes data reproduction from a disc, for example, a BDJ application (BDJ application) specified by a BDJ title specified in Blu-ray Disc (registered trademark) is used. When executing, the process of recording the playback information including the playback position information in addition to the disc identifier and the playback title information in the register periodically or when playback is stopped is executed, and the playback position information recorded in the register is resumed when playback is resumed. The reproduction information including “” is acquired, and the resume processing is executed after data verification. According to this configuration, the resume process can be executed even when the resume function is not originally held as a function of the reproduction application.

  Details of the disc, authoring method, reproduction control method, and information processing apparatus of the present invention will be described below with reference to the drawings.

  The present invention provides a configuration for realizing a resume function when content reproduction is performed using a reproduction application that does not have a resume function. As described above, when the resume function resumes playback after stopping playback in the middle of the playback of content recorded on a recording medium such as a DVD or Blu-ray Disc (registered trademark), for example, This is a function for executing playback from the previous playback stop position.

  For example, a playback application such as movie content conforming to a BD format defined as a Blu-ray Disc (registered trademark) format detects a playback stop position based on a user's playback stop instruction, stores it in a memory, and starts playback. It has a so-called resume function for re-reading information from the memory and restarting playback from the playback stop position. In this process, the playback stop position is recorded in a player status register (PSR: Player Status Register) that is a register for storing player status information, and when playback is resumed, the PSR stored value is extracted to determine the playback start point. Such processing is performed.

  However, when executing a BDJ application (BDJ application) that is content recorded on the same Blu-ray Disc (registered trademark), the information processing apparatus that executes the reproduction process reads the BDJ application from the disc and stores the information in the information processing apparatus. For example, a virtual machine (VM) as an execution unit of a Java (registered trademark) application is set to reproduce Java (registered trademark) content. The playback application BDJ application (BDJ application) does not have a resume function. In other words, this is an application that does not perform the process of detecting the input of the playback stop process by the user and recording the playback position in the PSR, and cannot perform the resume function.

  In the following, an example of processing when a BDJ application (BDJ application) is used as an example of a playback application that does not have a resume function will be described.

  First, an example of content recorded on a Blu-ray Disc (registered trademark) will be described with reference to FIGS. 1 and 2.

  A disc 100 shown in FIG. 1 is a Blu-ray Disc (registered trademark), and various contents are recorded on the disc 100 according to, for example, the directory structure shown in FIG. Movie content and the like are recorded in accordance with the BD format, which is a prescribed format for Blu-ray Disc (registered trademark). In the BD format, a unit called a title can be recorded on the disc 100. The title includes an HDMV title and a BDJ title, and both are described in an index table defined in the BD format. For both HDMV titles and BDJ titles, movie titles and interactive titles are respectively defined in the BD format.

  In addition to this, the disc 100 is recorded with playback control information to be applied in the playback processing executed in the information processing apparatus that executes the playback processing of the disc. The processing sequence using the reproduction control information will be described in detail later with reference to the flowchart in FIG.

  FIG. 2 is a diagram for explaining a configuration example of content recorded in accordance with the BD format recorded on the disc 100. The content has a hierarchical structure of (A) an index 210, (B) a movie object 220, (C) a playlist 230, and (D) a clip 240. When an index such as a title accessed by a playback application is specified, for example, a playback program associated with the title and various titles shown in FIG. 1 is specified, and the playback order of contents is defined according to the program information of the specified playback program The selected playlist is selected.

  The play list includes play items as reproduction target data information. The AV stream or the command as the actual content data is selectively read out by the clip information as the playback section defined by the play item included in the playlist, and the AV stream playback and command execution processing are performed. There are a large number of playlists and play items, and a playlist ID and play item ID as identification information are associated with each.

  In the reproduction specifying the HDMV title shown in FIG. 1, for example, a movie object associated with the HDMV title is read, and content reproduction according to a specific playlist is executed by the movie object.

  The BDJ movie title or the BDJ interactive title in the BDJ title shown in FIG. 1 is also played in substantially the same playback order. That is, the BDJ objects associated with these titles are read, the Java (registered trademark) application specified by the BDJ object is read, and the playlist specified by the Java (registered trademark) application is followed. Content playback is executed.

  Note that a BDJ application that is activated by a BDJ movie title cannot be recognized by the BDJ application, but a BDJ application that is activated by a BDJ interactive title can be recognized by the BDJ application.

  FIG. 3 is a diagram illustrating the configuration of the information processing apparatus 300 according to an embodiment of the present invention. The information processing apparatus 300 mounts the disc 100 and plays back the content stored on the disc 100. The disc 100 is the disc 100 described above with reference to FIG. 1 and is a Blu-ray Disc (registered trademark). In this processing example, reproduction is performed from the disc 100. The playback control unit (application execution unit) 301 executes a BDJ application that is activated by a BDJ title.

  A register (GPR: General Purpose Resistor) 302 is a general-purpose register and is preferably a nonvolatile memory. In this processing example, for example, a disc identifier (disc ID), a title of the playback content, a playback position or playback stop position, a flag for confirming the validity of the written information, and the like are recorded in this register (GPR). Details of specific recording data will be described later.

  A user interface (UI) 303 is a user operation (UO) defined on the BD format for inputting an instruction to stop or start playback from the user. It is also possible to provide a user interface for inputting / outputting information for executing presentation of confirmation information for resume execution and input of confirmation information to the user by a BDJ program.

Hereinafter, the following two embodiments will be described in sequence.
(Embodiment 1) Processing example for realizing resume as long as one disk is used regardless of the presence or absence of the disk ejecting process (eject) (Embodiment 2) 1 without performing the disk ejecting process (eject) Example of processing to realize resume as long as a single disc is used

(Example 1) Process example for realizing resume as long as one disk is used regardless of whether or not a disk ejection process (eject) is performed. First, one sheet regardless of the presence or absence of a disk ejection process (eject). An example of processing for realizing resume as long as the disk is continuously used will be described.

A processing sequence according to the present embodiment will be described with reference to the flowcharts shown in FIGS. Each flow is a flowchart for explaining the following processing sequence.
(A) FIG. 4: an information writing process sequence to a register (GPR) at the time of content playback processing by starting a BDJ movie title;
(B) FIG. 5: an information writing process sequence for a register (GPR) during content playback processing upon activation of a BDJ interactive title;
(C) FIG. 6: Acquisition of register (GPR) information and resume processing execution sequence when resuming playback of a BDJ movie title or a BDJ interactive title,

  The processing steps according to the flow shown in FIGS. 4 to 6 are processing steps recorded in advance as playback control information recorded on the disc 100, and the information processing device 300 as a playback device reads from the disc 100. The playback control unit 301 executes this.

  As described above, there are two categories of BDJ titles: BDJ movie titles and BDJ interactive titles. Of these two, a BDJ application activated by a BDJ movie title cannot be recognized by the BDJ application when a user inputs a playback stop instruction. On the other hand, the BDJ application activated by the BDJ interactive title can recognize the user's instruction to stop playback.

(A) FIG. 4: an information writing process sequence to a register (GPR) at the time of content playback processing by starting a BDJ movie title;
First, the flow shown in FIG. 4 will be described.
FIG. 4 is a flowchart for explaining an information writing process sequence for a register (GPR) during a content playback process when a BDJ application started by a BDJ movie title, which is an application that cannot recognize a playback stop instruction input by the user, is executed. . This process is executed as a process of the reproduction control unit (application execution unit) 301 shown in FIG.

  First, in step S121, the playback control unit (application execution unit) specifies a BDJ movie title, reads a BDJ application associated with the BDJ movie title from the disc, and starts it. Next, in step S122, the BDJ application sets a register recording thread (thread) for executing data write processing on the register (GPR), and starts the recording thread set in step S123. This thread is set as a thread for a program that executes processing for writing regularly defined information into a register (GPR) at a predefined time interval.

In step S124, data is written to the register periodically, for example, every 1 sec by a program set in the recording thread. For example, the following information is written in the register (GPR).
Disk identifier (disk ID),
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
Each of these information is recorded.
These pieces of information are periodically written into the register by a program set in the recording thread. The data writing may be executed as an overwriting process for the previously written data.

In step S125, it is determined whether or not the BDJ application has ended. If not, the periodic register write processing in step S124 is repeatedly executed. If it is determined in step S125 that the BDJ application has ended, the process ends. At this time, the data finally written in step S124 to the register (GPR), that is,
Disk identifier (disk ID),
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
One set of these data is recorded.

  As described above, the BDJ application activated by the BDJ movie title is an application that cannot recognize the input of the playback stop instruction by the user, and cannot perform register writing in response to the input of the playback stop instruction by the user. As shown in the sequence shown in FIG. 4, information is written to the periodic register (GPR).

(B) FIG. 5: an information writing process sequence for a register (GPR) during content playback processing upon activation of a BDJ interactive title;
Next, the flow shown in FIG. 5 will be described.
FIG. 5 is a flowchart for explaining an information writing process sequence for a register (GPR) during a content playback process when a BDJ application started by a BDJ interactive title, which is an application that can recognize an input of a playback stop instruction by a user, is executed. . This process is executed as a process of the reproduction control unit (application execution unit) 301 shown in FIG.

  First, in step S151, the playback control unit (application execution unit) specifies a BDJ interactive title, reads a BDJ application associated with the BDJ interactive title from the disc, activates it, and executes it. Next, in step S152, it is determined whether or not a user has input a playback stop instruction. This is a process of detecting the presence / absence of input from the user interface (UI) 303 shown in FIG.

If the user does not input a playback stop instruction, the execution of the BDJ application is continued. When the input of the reproduction stop instruction by the user is detected, the process proceeds to step S153, the data writing process to the register (GPR) is performed, and the application is terminated. For example, the following information is written in the register (GPR).
Disk identifier (disk ID),
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
Each of these information is recorded.
These pieces of information are written to the register. The data writing may be executed as an overwriting process for the previously written data.

  As described above, the BDJ application activated by the BDJ interactive title is an application that can recognize the input of the reproduction stop instruction by the user, and can perform register writing in response to the input of the reproduction stop instruction by the user. Therefore, as in the sequence shown in FIG. 5, information writing to the register is executed in response to the input of the reproduction stop instruction by the user. In this case, information is written only once at the end of reproduction.

(C) FIG. 6: Acquisition of register (GPR) information and resume processing execution sequence when resuming playback of a BDJ movie title or a BDJ interactive title,
Next, the flow shown in FIG. 6 will be described.
FIG. 6 is a sequence for acquiring register (GPR) information and executing resume processing when resuming playback of a BDJ movie title and a BDJ interactive title. The process at the time of resuming the reproduction is a process common to the BDJ movie title and the BDJ interactive title. This process is executed as a process of the reproduction control unit (application execution unit) 301 shown in FIG.

  First, in step S171, a first play is performed. This is an execution process of “First Playback”, which is a title that is automatically played when a disc is set and started.

After the first play is executed, a register (GPR) read process is executed in step S172. As explained above, the register (GPR)
Disk identifier (disk ID),
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
These pieces of information are written.

  Next, in step S173, collation processing between the ID recorded in the register and the ID of the currently loaded disc is executed. If they match, the process proceeds to step S174. If they do not match, the process proceeds to step S180, and the playback process is started by setting the playback start position to the first position without executing the resume process.

  If the disk ID recorded in the register matches the ID of the currently loaded disk in step S173, the process proceeds to step S174, and the tampering verification check bit recorded in the register (GPR) is used. Perform verification processing. In step S175, when the validity of the register write data is confirmed by the check bit verification, the process proceeds to step S176. If the validity cannot be confirmed, the process proceeds to step S180, and the reproduction process is started by setting the reproduction start position to the first position without executing the resume process.

  In step S175, when the validity of the register write data is confirmed by the check bit verification, the process proceeds to step S176 to determine whether or not to execute a resume process in which the reproduction start position is set from the previous reproduction stop position. Queries can be executed within a BDJ application via a user interface (UI).

  In step S177, the user's response is determined, and if there is a response to execute the resume process, the process proceeds to step S178, and if there is no response to execute the resume process, the process proceeds to step S180. Then, without executing the resume process, the playback start position is set to the first position and the playback process is started.

  If there is a response from the user to execute the resume process in step S177, the process proceeds to step S178, where the disk ID register write process is performed, and in step S179, the resume process is executed. That is, the write information in the register (GPR) is acquired, the playback stop position in the previous playback process is detected, and playback from the playback stop position is started.

  In the above, the processing example which implement | achieves a resume (resume) as long as it continues using one disk irrespective of the presence or absence of a disk ejection process (eject) was demonstrated. In this processing example, a disk-specific ID is recorded in the register (GPR), and whether or not the disk-specific ID recorded in the register matches the disk-specific ID of the disk loaded in the apparatus when playback is resumed. Since the configuration is such that resume can be executed if the discs match, the resume processing can be performed even when the disc is ejected from the apparatus (eject) and then mounted and played back again. .

(Example 2) Processing example for realizing resume as long as one disk is continuously used without performing disk ejection processing (eject) Next, one disk without performing disk ejection processing (eject) A description will be given of an example of processing for realizing the resume as long as the user continues to use.

A processing sequence according to the present embodiment will be described with reference to flowcharts shown in FIGS. Each flow is a flowchart for explaining the following processing sequence.
(A) FIG. 7: Information writing process sequence to the register (GPR) during content playback processing by starting a BDJ movie title,
(B) FIG. 8: Information writing process sequence to the register (GPR) at the time of content playback processing by starting the BDJ interactive title,
(C) FIG. 9: Acquisition of register (GPR) information and resume processing execution sequence when resuming playback of a BDJ movie title or a BDJ interactive title,

  The processing steps according to the flow shown in FIGS. 7 to 9 are processing steps recorded in advance as playback control information recorded on the disc 100, and the information processing device 300 as a playback device reads from the disc 100. The playback control unit 301 executes this.

  There are two categories of BDJ titles: BDJ movie titles and BDJ interactive titles. Of these two, the BDJ application activated by the BDJ movie title is an application that cannot recognize the input of the reproduction stop instruction by the user, and the BDJ application activated by the BDJ interactive title can recognize the instruction of the user to stop reproduction. It is.

(A) FIG. 7: Information writing process sequence to the register (GPR) during content playback processing by starting a BDJ movie title,
First, the flow shown in FIG. 7 will be described.
FIG. 7 is a flowchart for explaining an information writing process sequence for a register (GPR) during a content playback process when a BDJ application started by a BDJ movie title, which is an application that cannot recognize a playback stop instruction input by the user, is executed. . This process is executed as a process of the reproduction control unit (application execution unit) 301 shown in FIG.

  First, in step S321, the playback control unit (application execution unit) specifies a BDJ movie title, reads a BDJ application associated with the BDJ movie title from the disc, and starts it. In step S322, the BDJ application sets a register recording thread (thread) for executing data write processing on the register (GPR), and starts the recording thread set in step S323. This thread executes a process of writing regularly defined information to a register (GPR) at a predefined time interval.

In step S324, data is written to the register periodically, for example, every 1 sec by a program set in the recording thread. For example, the following information is written in the register (GPR).
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
Each of these information is recorded.
These pieces of information are periodically written into the register by a program set in the recording thread. The data writing may be executed as an overwriting process for the previously written data.

In step S325, it is determined whether or not the BDJ application has ended. If not, the periodic register write processing in step S324 is repeatedly executed. If it is determined in step S325 that the BDJ application has ended, the process ends. At this time, the data finally written in step S324 to the register (GPR), that is,
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
One set of these data is recorded.

  As described above, the BDJ application activated by the BDJ movie title is an application that cannot recognize the input of the playback stop instruction by the user, and cannot perform register writing in response to the input of the playback stop instruction by the user. As shown in the sequence shown in FIG. 7, information is written to the periodic register (GPR).

(B) FIG. 8: Information writing process sequence to the register (GPR) at the time of content playback processing by starting the BDJ interactive title,
Next, the flow shown in FIG. 8 will be described.
FIG. 8 is a flowchart for explaining an information writing process sequence for a register (GPR) during a content playback process when a BDJ application started by a BDJ interactive title, which is an application that can recognize an input of a playback stop instruction by a user, is executed. . This process is executed as a process of the reproduction control unit (application execution unit) 301 shown in FIG.

  First, in step S351, it is determined whether or not a user has input a playback stop instruction.

If the user does not input a playback stop instruction, the execution of the BDJ application is continued. When the input of the reproduction stop instruction by the user is detected, the process proceeds to step S352, the data writing process to the register (GPR) is performed, and the application is terminated. For example, the following information is written in the register (GPR).
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
Each of these information is recorded.
These pieces of information are written to the register. The data writing may be executed as an overwriting process for the previously written data.

  As described above, the BDJ application activated by the BDJ interactive title is an application that can recognize the input of the reproduction stop instruction by the user, and can perform register writing in response to the input of the reproduction stop instruction by the user. Therefore, as in the sequence shown in FIG. 8, information writing to the register is executed in response to the input of the reproduction stop instruction by the user. In this case, information is written only once at the end of reproduction.

(C) FIG. 9: Acquisition of register (GPR) information and resume processing execution sequence when resuming playback of a BDJ movie title or a BDJ interactive title,
Next, the flow shown in FIG. 9 will be described.
FIG. 9 is a sequence for acquiring register (GPR) information and executing a resume process when resuming playback of a BDJ movie title and a BDJ interactive title. The process at the time of resuming the reproduction is a process common to the BDJ movie title and the BDJ interactive title. This process is executed as a process of the reproduction control unit (application execution unit) 301 shown in FIG.

  First, in step S371, a first play is executed. This is an execution process of “First Playback”, which is a title that is automatically played when a disc is set and started.

In the first play, the BDJ application executes a register (GPR) read process in step S372. As explained above, the register (GPR)
Playback content title (title number),
Playback playlist ID,
Current playback position information (play item ID, playlist mark ID, media time, etc.),
Check bits for falsification verification on the above information,
These pieces of information are written.

  Next, in step S373, the BDJ application confirms that the value recorded in the register is not initialized. In other words, if it is initialized and reset, no information about the previous playback stop remains in the register. In this case, the process proceeds to step S380, and the playback start position is set without executing resume processing. Set to the first position and start the playback process.

  On the other hand, if the value recorded in the register is not initialized in step S373 and the information at the time of the previous reproduction stop is left, the process proceeds to step S374 and the falsification verification recorded in the register (GPR) is performed. The verification process using the check bit is performed. In step S375, when the validity of the register write data is confirmed by the check bit verification, the process proceeds to step S376. If the validity cannot be confirmed, the process proceeds to step S380, and the reproduction process is started by setting the reproduction start position to the first position without executing the resume process.

  In step S375, when the validity of the register write data is confirmed by the check bit verification, the process proceeds to step S376 to determine whether or not to execute a resume process in which the reproduction start position is set from the previous reproduction stop position. The inquiry is executed via a user interface (UI) in the BDJ application.

  In step S377, the user's response is determined, and if there is a response to execute the resume process, the process proceeds to step S378, and if there is no response to execute the resume process, the process proceeds to step S380. Then, without executing the resume process, the playback start position is set to the first position and the playback process is started.

  If there is a response from the user to execute the resume process in step S377, the process proceeds to step S378, and the resume process is executed. That is, the write information in the register (GPR) is acquired, the playback stop position in the previous playback process is detected, and playback from the playback stop position is started.

  In the foregoing, an example of processing for realizing resume as long as one disk is continuously used without performing disk ejection processing (eject) has been described. In this processing example, the disc-specific ID is not recorded in the register (GPR), and disc matching is not confirmed. However, since it is configured such that resume can be executed by collating specific content such as a title, the resume process can be performed unless the disc is ejected from the apparatus.

  Note that the disc 100 according to the present invention is a disc on which the playback control steps described with reference to the flowcharts of FIGS. 4 to 9 are recorded, and the playback control unit 3012 of the information processing apparatus 300 shown in FIG. The reproduction control step recorded in the above is executed. When manufacturing the disc, the information processing apparatus performs disc authoring. As the authoring process, the playback control information including the playback control steps described with reference to FIGS. 4 to 9 is used. A process of generating and recording on the disc 100 is performed.

  In this processing example, when the disk ejection process (eject) is executed, the register (GPR) may be initialized, that is, reset. However, as long as the disk ejection process (eject) is not executed. Is preferably set so that the register (GPR) is not initialized, that is, not reset.

  The present invention has been described in detail above with reference to specific embodiments. However, it is obvious that those skilled in the art can make modifications and substitutions of the embodiments without departing from the gist of the present invention. In other words, the present invention has been disclosed in the form of exemplification, and should not be interpreted in a limited manner. In order to determine the gist of the present invention, the claims should be taken into consideration.

  As described above, according to the configuration of an embodiment of the present invention, in an information processing apparatus that performs data reproduction from a disc, for example, it is specified by a BDJ title defined in Blu-ray Disc (registered trademark). When executing a BDJ application (BDJ application), a process for recording playback information including playback position information in addition to a disc identifier and playback title information in a register periodically or when playback is stopped is executed. The reproduction information including the reproduction position information recorded in the above is acquired, and the resume processing is executed after data verification. According to this configuration, the resume process can be executed even when the resume function is not originally held as a function of the reproduction application.

It is a figure explaining the structural example of the recording data of a disc. It is a figure explaining the structure of the recording data according to BD format. It is a figure explaining the structural example of the information processing apparatus which concerns on one Example of this invention. It is a figure which shows the flowchart explaining an example of the information writing process sequence with respect to the register | resistor (GPR) at the time of the content reproduction process by starting of a BDJ movie title. FIG. 10 is a flowchart illustrating an example of an information writing process sequence with respect to a register (GPR) at the time of content playback processing by activation of a BDJ interactive title. It is a figure which shows the flowchart explaining an example of acquisition of a register (GPR) information at the time of resumption of reproduction | regeneration of a BDJ movie title, or a BDJ interactive title, and a resume process execution sequence. It is a figure which shows the flowchart explaining an example of the information write-in process sequence with respect to the register | resistor (GPR) at the time of the content reproduction process by starting of a BDJ movie title. FIG. 10 is a flowchart illustrating an example of an information writing process sequence with respect to a register (GPR) at the time of content playback processing by activation of a BDJ interactive title. It is a figure which shows the flowchart explaining an example of acquisition of a register (GPR) information at the time of resumption of reproduction | regeneration of a BDJ movie title, or a BDJ interactive title, and a resume process execution sequence.

Explanation of symbols

100 discs 211, 212 Application index file (title)
221 to 223 Playback program 231 to 233 Playlist 241 to 243 Clip 261, 262 AV stream 300 Information processing device 301 Playback control unit (application execution unit)
302 Register (GPR)
303 User interface (UI)

Claims (20)

A disc on which playback control information for causing the playback device to execute the following playback control steps is recorded,
The reproduction control step includes
In the data reproduction process by executing the application recorded on the disc in the reproduction control unit of the reproduction device, the reproduction control unit is configured to record reproduction information including reproduction position information at a predetermined interval in the register of the reproduction device. Steps to be performed;
When resuming reproduction after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. A disc characterized in that it includes a step of making the disc. The reproduction control information further includes
Causing the playback control unit to record a disc-specific ID that is an identifier of the disc in the register during data playback by execution of the application in the playback control unit;
When the playback controller resumes playback after stopping the playback of the data in the playback device, the playback control unit executes the verification of the disc identifier recorded in the register and the identifier of the disc mounted on the device, and when they match, Obtaining reproduction information from the register and performing a resume process for starting reproduction from a reproduction position indicated by the reproduction position information;
The disk according to claim 1, comprising: The disc is a Blu-ray Disc (registered trademark),
The application executed by the playback control unit is:
2. The disc according to claim 1, wherein the disc is a BDJ application (BDJ application) specified by a BDJ movie title defined in Blu-ray Disc (registered trademark). A disc on which playback control information for causing the playback device to execute the following playback control steps is recorded,
The reproduction control step includes
In the playback control unit of the playback device, during playback of data by executing the application recorded on the disc, playback including playback position information is input to the playback control unit in response to a playback stop instruction input from the user interface of the playback device Executing a process of recording information in a register of the playback device;
When resuming reproduction after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. A disc characterized in that it includes a step of making the disc. The reproduction control information further includes
Causing the playback control unit to record a disc-specific ID that is an identifier of the disc in the register during data playback by execution of the application in the playback control unit;
When the reproduction is resumed after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to perform a comparison between the disc identifier recorded in the register and the identifier of the disc mounted on the reproduction device, thereby matching. Obtaining the reproduction information from the register and performing a resume process of starting reproduction from the reproduction position indicated by the reproduction position information,
The disk according to claim 4, comprising: The disc is a Blu-ray Disc (registered trademark),
The application executed by the playback control unit is:
5. The disc according to claim 4, wherein the disc is a BDJ application specified by a BDJ interactive title specified in Blu-ray Disc (registered trademark). An authoring method for executing, in an information processing device, authoring of a disc on which playback control information for causing a playback device to execute the following playback control step is provided.
The reproduction control step includes
In the data reproduction process by executing the application recorded on the disc in the reproduction control unit of the reproduction device, the reproduction control unit is configured to record reproduction information including reproduction position information at a predetermined interval in the register of the reproduction device. Steps to be performed;
When the reproduction is resumed after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire the reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. A method for authoring a disc comprising the steps of: The reproduction control information further includes
Causing the playback control unit to record a disc-specific ID that is an identifier of the disc in the register during data playback by execution of the application in the playback control unit;
When the playback controller resumes playback after stopping the playback of the data in the playback device, the playback control unit executes the verification of the disc identifier recorded in the register and the identifier of the disc mounted on the device, and when they match, Obtaining reproduction information from the register and performing a resume process for starting reproduction from a reproduction position indicated by the reproduction position information;
The authoring method according to claim 7, wherein: The disc is a Blu-ray Disc (registered trademark),
The application executed by the playback control unit is:
8. The authoring method according to claim 7, wherein the authoring method is a BDJ application (BDJ application) specified by a BDJ movie title defined in Blu-ray Disc (registered trademark). An authoring method for executing, in an information processing device, authoring of a disc on which playback control information for causing a playback device to execute the following playback control step is provided.
The reproduction control step includes
In the playback control unit of the playback device, during playback of data by executing the application recorded on the disc, playback including playback position information is input to the playback control unit in response to a playback stop instruction input from the user interface of the playback device Executing a process of recording information in a register of the playback device;
When resuming reproduction after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to acquire reproduction information recorded in the register, and resume processing is started from the reproduction position indicated by the reproduction position information. An authoring method comprising the steps of: The reproduction control information further includes
Causing the playback control unit to record a disc-specific ID that is an identifier of the disc in the register during data playback by execution of the application in the playback control unit;
When the reproduction is resumed after the reproduction of the data is stopped in the reproduction device, the reproduction control unit is caused to perform a comparison between the disc identifier recorded in the register and the identifier of the disc mounted on the reproduction device, thereby matching. Obtaining the reproduction information from the register and performing a resume process of starting reproduction from the reproduction position indicated by the reproduction position information,
The authoring method according to claim 10, further comprising: The disc is a Blu-ray Disc (registered trademark),
The application executed by the playback control unit is:
The authoring method according to claim 10, wherein the authoring method is a BDJ application (BDJ application) specified by a BDJ interactive title specified in Blu-ray Disc (registered trademark). A playback control method for executing playback control processing of a disc in a playback device,
The playback control unit of the playback device has a playback control step of executing playback control processing according to the playback control information recorded on the disc,
The reproduction control step includes
Executing a process of recording reproduction information including reproduction position information at a predetermined interval in a register of the reproduction apparatus at the time of data reproduction processing by execution of an application recorded on the disc in the reproduction control unit;
Replay control including a step of performing a resume process of acquiring reproduction information recorded in the register and starting reproduction from a reproduction position indicated by the reproduction position information when resuming reproduction after the reproduction of the data is stopped Method. The reproduction control information further includes
A step of recording a disc-specific ID, which is an identifier of the disc, in the register in the playback control unit during data playback by execution of the application in the playback control unit;
When the playback device resumes playback after stopping the playback of the data, the playback control unit checks the disc identifier recorded in the register with the identifier of the disc mounted on the device, and when they match, Performing a resume process of obtaining reproduction information from the register and starting reproduction from a reproduction position indicated by the reproduction position information;
The reproduction control method according to claim 13, comprising: The disc is a Blu-ray Disc (registered trademark),
The application executed by the playback control unit is:
8. The reproduction control method according to claim 7, wherein the reproduction control method is a BDJ application (BDJ application) specified by a BDJ movie title defined in Blu-ray Disc (registered trademark). A playback control method for executing playback control processing of a disc in a playback device,
The playback control unit of the playback device has a playback control step of executing playback control processing according to the playback control information recorded on the disc,
The reproduction control step includes
At the time of data reproduction processing by executing the application recorded on the disc in the reproduction control unit, reproduction information including reproduction position information is stored in the register of the reproduction device in response to a reproduction stop instruction input from the user interface of the reproduction device. Executing the process of recording; and
Replay control including a step of performing a resume process of acquiring reproduction information recorded in the register and starting reproduction from a reproduction position indicated by the reproduction position information when resuming reproduction after the reproduction of the data is stopped Method. The reproduction control information further includes
Recording a disc-specific ID, which is an identifier of the disc, in the register at the time of data reproduction by execution of the application in the reproduction control unit;
When the reproduction is resumed after the reproduction of the data is stopped in the reproducing apparatus, the disk identifier recorded in the register is compared with the identifier of the disk mounted on the reproducing apparatus. Performing a resume process of acquiring reproduction information and starting reproduction from a reproduction position indicated by the reproduction position information;
The reproduction control method according to claim 16, further comprising: The disc is a Blu-ray Disc (registered trademark),
The application executed by the playback control unit is:
17. The playback control method according to claim 16, wherein the playback control method is a BDJ application specified by a BDJ interactive title defined in Blu-ray Disc (registered trademark). An information processing apparatus that executes a disc playback process,
According to the playback control information recorded on the disc, a playback control unit that executes playback control processing,
The reproduction control unit
At the time of data reproduction processing by execution of an application recorded on the disc in the reproduction control unit, a process of recording reproduction information including reproduction position information at regular intervals in a register of the reproduction device is performed.
An information processing apparatus for performing a resume process of acquiring reproduction information recorded in the register and starting reproduction from a reproduction position indicated by the reproduction position information when reproduction is resumed after reproduction of the data is stopped. An information processing apparatus that executes a disc playback process,
According to the playback control information recorded on the disc, a playback control unit that executes playback control processing,
The reproduction control unit
At the time of data reproduction processing by executing the application recorded on the disc in the reproduction control unit, reproduction information including reproduction position information is stored in the register of the reproduction device in response to a reproduction stop instruction input from the user interface of the reproduction device. Execute the process to record,
An information processing apparatus for performing a resume process of acquiring reproduction information recorded in the register and starting reproduction from a reproduction position indicated by the reproduction position information when reproduction is resumed after reproduction of the data is stopped.