JP2014143732A - Video reproducing device and starting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select a starting sequence according to content.SOLUTION: A video reproducing device (100) comprises: a starting sequence determination part (134) which determines whether a virtual machine has to be started to reproduce content and which selects a starting sequence different between when determining that the virtual machine has to be started and when determining that the virtual machine does not have to be started; and a starting control part (132) which controls a starting process according to the starting sequence selected by the starting sequence determination part (134).

Description

  The present invention relates to a video playback apparatus for playing back content and a startup method thereof.

  An apparatus that reproduces content recorded on a DVD (Digital Versatile Disc) realizes an interactive function by using navigation commands defined in advance in the DVD standard. The navigation command is used for conditional branching, setting of the status register of the device, and acquisition of the setting value of the status register. Since only navigation commands defined in advance in the DVD standard can be used, the degree of freedom of interactivity realized by the interactive function is low, but the processing load of the CPU (Central Processing Unit) is very small. It has become. Such an interactive function is called a standard interactive function.

  On the other hand, an apparatus for reproducing content recorded on a BD (Blu-ray Disc) executes an application program created in the Java (registered trademark) programming language in addition to a standard interactive function using a navigation command. Highly flexible interactive function can be realized. An application program created in the Java programming language is not limited to operations defined by the standard, and functions such as games and network connections can also be implemented. Such an interactive function is called an extended interactive function. Information using the standard interactive function and information using the extended interactive function may be mixedly recorded on the optical disc conforming to the BD standard, and the playback device selects which interactive function to use for each content. can do.

  When executing an application program created in the Java programming language, it is necessary to start a Java virtual machine which is a Java execution environment, that is, a CPU needs to execute a program for performing processing as a Java virtual machine. . In particular, in an apparatus using an embedded system with a slow CPU processing speed, it takes a lot of time to start up the Java virtual machine, and thus it takes a lot of time to start up the entire apparatus.

  On the other hand, in Patent Document 1, it is apparent that a part of the function that a virtual machine should perform is realized by an embedded program and an application program is executed on the embedded program during the startup process of the virtual machine. A technology is described in which the virtual machine takes over the previous operating state of the embedded program when the startup time of the virtual machine is shortened and the startup of the virtual machine is completed. In other words, the technique described in Patent Document 1 provides another simple virtual machine configured with an embedded program that starts faster than this virtual machine, instead of a virtual machine with a large CPU processing load. The program execution start time is shortened.

  Further, in Patent Document 2, when starting a recording apparatus having a plurality of drive units, only the drive unit in which a portable recording medium such as an optical disk is inserted is started from the plurality of drive units. It describes a technology that can output video at high speed, energy saving.

JP2009-151750A (page 3-4) JP 2006-164334 A (page 4-9, FIG. 6)

  However, with the technology described in Patent Document 1, when an instruction that is not supported by the simple virtual machine exists when the program is executed by the simple virtual machine, the entire system may become unstable. High nature. In order to reduce this possibility, if a large number of instructions are supported, even if it is a simple virtual machine, it takes a lot of time to complete the startup. It will take a lot of time.

  Further, in the technique described in Patent Document 2, even when playing back content that does not require a virtual machine, such a virtual machine is started. Therefore, it takes a long time to complete the start-up of the entire apparatus.

  Accordingly, an object of the present invention is to enable selection of an activation sequence corresponding to content.

In order to solve the above problems, a video reproduction apparatus according to the present invention is
An information acquisition unit for acquiring next activation determination information capable of determining whether or not the virtual machine needs to be activated for reproduction of the content used for the previous reproduction;
A storage unit for storing the next activation determination information;
Based on the next start determination information, it is determined whether or not the virtual machine needs to be started for the reproduction of the content. When it is determined that the virtual machine needs to be started, it is determined that the virtual machine does not need to be started. An activation sequence determination unit that selects a different activation sequence, and
A startup control unit that controls startup processing according to the startup sequence selected by the startup sequence determination unit.

  As described above, according to the present invention, it is possible to select an activation sequence corresponding to content.

2 is a schematic block diagram illustrating a functional configuration of a video reproduction device according to Embodiment 1. FIG. 3 is a schematic diagram showing a file structure of information recorded on an optical disc in Embodiment 1. FIG. 6 is a schematic diagram showing a syntax of a reproduction control information file in Embodiment 1. FIG. 6 is a schematic diagram showing a syntax of next activation determination information in Embodiment 1. FIG. (A) And (B) is the schematic which shows the starting sequence of the video reproduction apparatus in Embodiment 1. FIG. 3 is a flowchart illustrating processing at the time of activation according to the first embodiment. 3 is a flowchart illustrating activation determination processing according to the first embodiment. 3 is a flowchart illustrating a reproduction stop process according to the first embodiment. 6 is a schematic block diagram illustrating a functional configuration of a video reproduction device according to Embodiment 2. FIG. FIG. 10 is a schematic diagram showing a syntax of next activation determination information in the second embodiment. 10 is a flowchart showing processing at the time of starting in the second embodiment.

Embodiment 1 FIG.
FIG. 1 is a schematic block diagram showing a functional configuration of a video reproduction device 100 according to Embodiment 1 of the present invention. As illustrated, the video reproduction device 100 includes a decoder block unit 110, a permanent storage unit 120, a temporary storage unit 125, a control unit 130, and an operation unit 140.

  The decoder block unit 110 includes a drive unit 111, a stream control unit 112, a decoder unit 113, and a superimposing unit 114. The control unit 130 includes a system control unit 131 and a virtual machine execution unit 138, and the system control unit 131 includes a start control unit 132, an information acquisition unit 133, and a start sequence determination unit 134.

  The drive unit 111 acquires (reads) information recorded on the optical disc 160 that is a portable recording medium in response to an instruction from the system control unit 131. Here, it is assumed that the optical disk 160 in the present embodiment is a disk compliant with the BD standard.

FIG. 2 is a schematic diagram showing a file structure of information recorded on the optical disc 160.
The root directory 161 is a directory of the highest hierarchy in the logical hierarchy structure. The multimedia directory 162 is a directory arranged in a lower hierarchy of the root directory 161, and a reproduction control information area 168A is formed in the multimedia directory 162. The stream management directory 163 is a directory arranged in the lower hierarchy of the multimedia directory 162, and an AV stream information area 168B is formed in the stream management directory 163. The program storage directory 164 is a directory arranged in a lower hierarchy of the multimedia directory 162, and an application area 168C is formed in the program storage directory 164.

In the multimedia directory 162, a playback control information file 165 constituting the playback control information RC is recorded. Here, the playback control information RC is content management information recorded on the optical disc 160.
In the stream management directory 163, a stream information file 166 constituting the AV stream information SD is recorded. Here, the AV stream information SD is stream information obtained by encoding at least one of a video signal or an audio signal of content and multiplexing it with reproduction time information. For example, the video signal is encoded by the MPEG-2 system or the like, and the audio signal is encoded by the AC-3 system or the like.
In the program storage directory 164, an application file 167 constituting the application program AP for realizing the extended interactive function is recorded. Here, in the present embodiment, the application program AP for realizing the extended interactive function is described as an application program created in the Java programming language. However, the application program AP is a virtual program that provides a program execution environment. Any program that requires a machine may be used, and the program may be written in another language.

  The stream information file 166 includes one file for each program title (content). In the present embodiment, the file name of each stream information file 166 is assigned a unique name for identifying each file as the file name body excluding the extension. . Here, in the present embodiment, a 5-digit number is assigned as the name of the file name body.

In the application file 167, one file is formed for each program title (content). The file name body of the application file 167 used for the content stored in the specific stream information file 166 is assigned the same name as the name assigned to the file name body of the specific stream information file 166.
The application file 167 exists only when the content stored in the stream information file 166 uses the extended interactive function, and when the content stored in the stream information file 166 uses the normal interactive function, The application file 167 that matches the name of the file name body allocated to the stream information file 166 does not exist in the program storage directory 164.

  In the present embodiment, the stream information file 166 and the application file 167 are arranged in individual directories, but may be arranged in the same directory. The playback control information file 165 is a single file, but may be recorded separately for each program title (content). The application file 167 may be in a text format or a binary format regardless of the data format. Furthermore, these files 165, 166, and 167 may be subjected to an encryption process or a digital signature in order to prevent a third party from falsifying or leaking information.

FIG. 3 is a schematic diagram showing the syntax of the playback control information file 165.
The “disc general information” 165A holds attribute information indicating the attributes of the optical disc 160. In this embodiment, “disc general information” 165A holds at least “Disc_ID” 165B, which is identification information for uniquely identifying the optical disc 160.

The reproduction control information file 165 holds “program title information” 165C, which is management information for managing the program title of the content recorded on the optical disc 160. This “program title information” 165C holds “num_of_title” 165D indicating the total number of program titles, and the next loop statement (for and below) is repeated by the number of “num_of_title” 165D.
The program title is managed by a code “title_id” 165E that can be uniquely identified. An integer from “0” to “(total number indicated by“ num_of_title ”165D) −1” is sequentially allocated to “title_id” 165E. Note that a program title having “title_id” 165E of “0” is referred to as a first play title and indicates special content that is automatically played back when the optical disk 160 is inserted.

  “Stream information file name” 165F is 5-digit numerical information indicating the name of the file name body of the stream information file 166 storing the content of the program title specified by “title_id” 165E. The “start time information” 165G and “end time information” 165H include the start time and end time of the content (recorded program) stored in the stream information file 166 identified by the “stream information file name” 165F. Retained. The “stream information file name” 165F, “start time information” 165G, and “end time information” 165H specify the stream information file 166, and the playback section of the content stored in the specified stream information file 166 This is referred to as reproduction section information 166N.

“Extent_interactive_flag” 165I indicates whether to use the extended interactive function during playback of the content stored in the stream information file 166 of the program title identified by “title_id” 165E (whether to use a virtual machine). It is flag information which shows. When “extent_interactive_flag” 165I indicates that the extended interactive function is used, there is an application file 167 in which the same name as the file name body of “stream information file name” 165F is allocated as the file name body. Will do.
When the program title of the content to be played is instructed by the user, it is necessary to determine whether or not the content of the program title that has received the playback instruction requires a virtual machine by checking “extent_interactive_flag” 165I In such a case, the virtual machine is activated before the content of such a program title is reproduced. If the virtual machine has already been started, the start process is not performed, and the content of the program title for which the playback instruction has been received is immediately played back.

  “Resume_valid_flag” 165J is flag information indicating whether or not resume playback is valid in the content of the program title specified by “title_id” 165E. Resume playback means that playback of the content stored in the stream information file 166 is stopped halfway, and when the content stored in the stream information file 166 is played back next time, playback is started from the position where the previous playback was stopped. It is a function to do. When “resume_valid_flag” 165J indicates that resume playback is valid, it indicates that resume playback can be performed on the content of the program title specified by “title_id” 165E. On the other hand, if “resume_valid_flag” 165J indicates that resume playback is invalid, it indicates that resume playback of the program title specified by “title_id” 165E is prohibited, and the first play title will be displayed at the next playback. It is played from the contents of.

  The “standard interactive command” 165K is an information area that is valid when the “extent_interactive_flag” 165I is invalid (in the case of the stream information file 166 of the program title using the standard interactive function). When the behavior or the content stored in the stream information file 166 is reproduced to the end, information indicating the stream information file 166 that is the next transition destination is recorded. When using this standard interactive function, it is not necessary to start a virtual machine.

  In the “attribute information management table” 165L, attribute information such as video stream information and audio stream information multiplexed in the stream information file 166 is recorded. In addition, a packet ID or the like is stored for each video stream information and audio stream information included in the stream information file 166, and the decoder unit 113 uses the packet ID to read video stream information and audio from the stream information file 166. Stream information or stream management information can be separated.

  The “access point management table” 165M is list information that records the read position and playback start time for each access unit in the program title (content), and the video playback device 100 uses such list information to perform searches and specials. Random access playback such as playback can be performed. For example, when the video information is encoded with an MPEG-2 video stream, the head of a GOP (Group Of Picture) corresponds to an access unit, and a playback start time and a playback start address (stream) for each GOP. Information on the position of the information file 166 starting from the beginning) is described.

  As described above, in the reproduction control information file 165, information on which program title content requires a virtual machine is collectively recorded. With this configuration, the activation sequence determination unit 134 of the system control unit 131 does not check the application file 167 (see FIG. 2) stored in the program storage directory 164, and the program title that requires a virtual machine. It is possible to quickly determine the contents of In the present embodiment, an example is shown in which information such as whether or not a virtual machine is required is recorded together in one reproduction control information file 165, but such information is divided into separate files. May be recorded.

  Returning to FIG. 1, the stream control unit 112 controls transfer of information acquired by the drive unit 111. For example, in the present embodiment, the stream control unit 112 sends the playback control information RC and application program AP acquired by the drive unit 111 from the optical disc 160 to the control unit 130, and the AV stream acquired by the drive unit 111 from the optical disc 160. The information SD is sent to the decoder unit 113.

  The decoder unit 113 sequentially captures the AV stream information SD sent from the stream control unit 112, and separates the captured AV stream information SD into encoded video stream information and encoded audio stream information. Then, the decoder unit 113 decodes the encoded video stream information and the encoded audio stream information to obtain video information VD and audio information AD, respectively. Then, the decoder unit 113 sends the decoded video information VD to the superimposing unit 114 and sends the decoded audio information AD to the display device 170.

In accordance with an instruction from a virtual machine execution unit 138, which will be described later, the superimposition unit 114 adds a video based on the video information VD1 sent from the virtual machine execution unit 138 to a video based on the video information VD sent from the decoder unit 113. Video information VD2 indicating a video obtained by mixing videos based on the video information VD and VD1 is generated so as to be displayed in a superimposed manner. Then, such video information VD2 is sent to the display device 170.
Note that the superimposing unit 114 transmits the video information VD sent from the decoder unit 113 to the display device 170 when there is no video to be superimposed on the video based on the video information VD sent from the decoder unit 113.

  The permanent storage unit 120 includes a virtual machine program storage unit 121 and a next activation determination information storage unit 122.

The virtual machine program storage unit 121 stores a program for performing processing as a virtual machine.
The next activation determination information storage unit 122 stores next activation determination information 122 </ b> A that can determine whether or not the virtual machine needs to be activated to reproduce the content stored on the optical disc 160.
The temporary storage unit 125 stores reproduction control information RC temporarily used by the video playback device 100, application AP, virtual machine program, program used by the video playback device 100, and the like.

  FIG. 4 is a schematic diagram showing the syntax of the next activation determination information 122A. The next activation determination information 122A includes, for example, “disc_valid_info” 122B, “title_valid_info” 122C, “disc configuration information” 122D, and “final title configuration information” 122H.

“Disc_valid_info” 122B is flag information indicating whether or not valid information is recorded in “disc configuration information” 122D.
“Title_valid_info” 122C is flag information indicating whether or not valid information is recorded in “final title configuration information” 122H.

  In “disc configuration information” 122D, disc attribute information relating to the optical disc 160 inserted in the drive unit 111 is recorded. For example, in the present embodiment, the “disc configuration information” 122D includes an “extended interactive_disc flag” 122E, a “title type configuration rate” 122F, and an “identification disc ID” 122G.

  The “extended interactive disc flag” 122E is flag information indicating whether or not at least one program title content that uses the extended interactive function (requires a virtual machine) is included in the optical disc 160. If at least one program title of content using the extended interactive function is included in the optical disc 160, there is a possibility of using a virtual machine for the next reproduction, and if such a program title is not included at all. Therefore, it can be determined that there is no possibility of using the virtual machine for the next reproduction.

“Title type composition rate” 122F is an extension title content rate indicating a ratio of program titles having a stream information file 166 using the extended interactive function (using a virtual machine) among the program titles included in the optical disc 160. Value. Here, the extended title content rate indicated by “title type composition rate” 122F takes a value in the range of “0” to “1.0”, and the closer to “1.0”, the title having the extended interactive function. Indicates a high percentage. For example, when the total playback time of the entire content stored on the optical disc 160 is 100 minutes and the total playback time of the content of the program title using the extended interactive function is 70 minutes, “70 ÷ 100 = 0.7”. The value of the extended title content rate is obtained by the formula.
In this embodiment, the “title type configuration rate” 122F is calculated based on the playback time of the content of the program title. However, the number of program titles of the content using the extended interactive function is stored in the optical disc 160. You may calculate by the ratio for the number of program titles of the recorded content.

  “Identification disk ID” 122G is identification information for identifying the optical disk 160 inserted in the drive unit 111. In the “identification disk ID” 122G, the identification information indicated by “Disc_ID” 165B of the reproduction control information file 165 is recorded.

  In “final title configuration information” 122H, information related to the content of the program title to be played back after the video playback device 100 is started is recorded. For example, in the present embodiment, “final title configuration information” 122H includes “title number information” 122I, “stop state information” 122J, “extended interactive_title flag” 122K, and “resume_title flag” 122L. Composed.

“Title number information” 122I is identification information for identifying a program title to be played back after the video playback device 100 is started, and “title_id” 165E of the playback control information file 165 stored in the optical disc 160. The identification information indicated by is stored. With the identification information indicated by “title_id” 165E, the program title of the content to be reproduced after being activated can be identified from the content of the plurality of program titles recorded on the optical disc 160.
It should be noted that the content that starts playback after startup is the content of the program title that was last played back when the last played program title can be resumed when the content recorded on the optical disc 160 was played back last time. If the last played program title is not resumable, the first play title content is obtained.

In “stop state information” 122J, playback time information when the content of the program title indicated by “title number information” 122I is stopped and register setting values of the video playback device 100 are recorded.
The “extended interactive_title flag” 122K is flag information indicating whether the content of the program title indicated by the “title number information” 122I uses the extended interactive function (whether the virtual machine is used). .
The “resume_title flag” 122L is flag information indicating whether or not resume playback is valid in the content of the program title indicated by “title number information” 122I.

Returning to FIG. 1, the system control unit 131 of the control unit 130 controls the entire processing in the video reproduction apparatus 100. For example, the system control unit 131 sends the application program AP sent from the stream control unit 112 to the virtual machine execution unit 138 and causes the virtual machine execution unit 138 to execute the application program AP.
The system control unit 131 includes a start control unit 132, an information acquisition unit 133, and a start sequence determination unit 134.

The activation control unit 132 controls processing for activating the video reproduction device 100 according to the activation sequence selected by the activation sequence determination unit 134.
In addition, the activation control unit 132 reads a program for executing processing as a virtual machine stored in the virtual machine program storage unit 121 so that the read virtual machine program can be executed in the control unit 130. Start the virtual machine. Then, the activation control unit 132 causes the activated virtual machine to function as the virtual machine execution unit 138.

  The information acquisition unit 133 acquires the necessary information from the playback control information RC sent from the stream control unit 112 and updates the next activation determination information 122A stored in the next activation determination information storage unit 122. Do.

The activation sequence determination unit 134 refers to the next activation determination information 122A stored in the next activation determination information storage unit 122 to determine whether or not to activate the virtual machine when the image playback device 100 is activated. Processing for selecting the playback device 100 activation sequence is performed.
Here, in the present embodiment, the activation sequence determination unit 134, as the activation sequence, a normal activation sequence in which the activation of the virtual machine is not performed in parallel with the activation of other parts of the video playback device 100, and the activation of the virtual machine Is selected from the first high-speed start sequence that is executed in parallel with the start of other parts of the video playback apparatus 100 or the second high-speed start sequence that does not start the virtual machine itself.

  The virtual machine execution unit 138 provides a virtual computer environment for executing the application program AP. For example, in the present embodiment, the virtual machine execution unit 138 is a Java VM (Java Virtual Machine), but is not limited to the Java VM.

  The operation unit 140 receives a request input from the user of the video playback device 100 to the video playback device 100. For example, the operation unit 140 is an operation panel, a remote control, or the like that is disposed on the front panel of the video playback device 100. Then, the user of the video playback device 100 uses the operation unit 140 to give an instruction to turn on or off the power of the video playback device 100. When the video playback device 100 is an in-vehicle video playback device, the part that receives the operation of the engine key in conjunction with the operation of the engine key is the operation unit 140, and the engine key received by the operation unit 140 In response to the above operation, an ON / OFF command for the main power supply of the video reproduction apparatus 100 may be issued.

The permanent storage unit 120, the temporary storage unit 125, and the control unit 130 described above include a CPU, a RAM (Random Access Memory) such as a DRAM (Dynamic Random Access Memory), a flash memory, an EEPROM (Electrically Erasable and Programmable Programmable). And a non-volatile storage device such as a memory (HDD), a hard disk drive (HDD), smart media, or a memory card.
For example, the permanent storage unit 120 can be realized by the CPU using a nonvolatile storage device. The temporary storage unit 125 can be realized by the CPU using the RAM.
In addition, the control unit 130 can be realized by loading a predetermined program stored in a nonvolatile storage device into the RAM and executing it by the CPU.

  5A and 5B are schematic diagrams illustrating a startup sequence of the video playback device 100. FIG. Here, FIG. 5A shows a normal startup sequence and a first fast startup sequence, and FIG. 5B shows a normal startup sequence and a second fast startup sequence. 5 is based on the assumption that the optical disk 160 is inserted in the drive unit 111.

In the normal startup sequence shown in FIG. 5A, first, when the video playback device 100 is turned on (power is supplied), the system control unit 131 and devices in the video playback device 100 are initialized. An initialization process to be executed is performed (the time required for this initialization process is TM-A).
Thereafter, as a loading operation of the optical disk 160 inserted in the drive unit 111, the optical disk 160 is spun up and physical information is read (the time required for this loading operation is TM-B).
Then, reading of the file system recorded at a predetermined position and reading of reproduction control information are performed, and database construction processing for constructing database information in the video reproduction apparatus is performed (the time required for this database construction processing is defined as TM -C).
Next, a virtual machine start process that is a start process of a virtual machine that is an execution environment of the application program AP is performed (the time required for the virtual machine start process is TM-D).
Then, by executing the application file 167 and decoding the AV stream information SD corresponding to the content of the program title to be played back, AV information output processing for outputting audio information AD and video information VD, VD2 is performed (this information) The time required for the AV information output process is assumed to be TM-E).

In the first high-speed startup sequence shown in FIG. 5A, first, when the video playback device 100 is turned on, initialization processing is performed as in the normal startup sequence (the time required for this initialization processing). Is TM-A). Thereafter, a loading operation is performed (the time required for this loading operation is TM-B).
At this time, the activation sequence determination unit 134 of the system control unit 131 reads the next activation determination information 122A stored in the next activation determination information storage unit 122 of the permanent storage unit 120, and whether or not the virtual machine needs to be activated. Determine whether.
When the activation sequence determination unit 134 determines that the virtual machine needs to be activated, the activation control unit 132 performs the loading operation (executed at the time indicated by TM-B) of the optical disc 160 and the database construction process (in TM-CL). In parallel with the execution at the indicated time, control is performed so that the virtual machine activation process, which is the activation process of the virtual machine, is performed (the time required for this virtual machine activation process is TM-DL).
Here, since the loading operation of the optical disk 160 has a low CPU load, the required time is almost the same even if the virtual machine activation process is performed in parallel. For this reason, the required time (TM-B) of the loading operation in the first high-speed startup sequence is the same as the required time (TM-B) of the loading operation in the normal startup sequence.
On the other hand, in the database construction process, the CPU load is large, and if the virtual machine activation process with a large CPU load is performed in parallel, the required time becomes longer than when the virtual machine activation process is not performed in parallel. For this reason, the time required for database construction processing (TM-CL) in the first fast startup sequence is longer than the time required for database construction processing (TM-C) in the normal startup sequence. Similarly, the required time (TM-DL) of the virtual machine startup process in the first fast startup sequence is longer than the required time (TM-D) of the virtual machine startup process in the normal startup sequence.
Then, after the database construction process and the virtual machine activation process are completed, the AV information output process is performed (the time required for this AV information output process is TM-E).

Thus, in the first high-speed startup sequence, the startup sequence determination unit 134 determines whether or not the virtual machine needs to be started before the loading operation of the optical disc 160 or during the loading operation. When it is determined that it is necessary, the video playback apparatus 100 can be started up at high speed as a whole by performing processing with low CPU load (loading operation) and processing with high processing (virtual machine startup processing) in parallel. .
In the first high-speed startup sequence shown in FIG. 5A, the database construction process and the virtual machine startup process are performed in parallel. However, these processes do not necessarily have to be performed in parallel. The machine activation process may be completed before the database construction process is started. In such a case, the time required for the database construction process in the first fast startup sequence is TM-C, similar to the time required for the database construction process in the normal startup sequence.

The normal activation sequence shown in FIG. 5B is the same as the normal activation sequence shown in FIG.
In the second high-speed startup sequence shown in FIG. 5B, first, when the video playback device 100 is turned on, initialization processing is performed as in the normal startup sequence (the time required for this initialization processing). Is TM-A). Thereafter, a loading operation is performed (the time required for this loading operation is TM-B).
At this time, the activation sequence determination unit 134 of the system control unit 131 reads the next activation determination information 122A stored in the next activation determination information storage unit 122 of the permanent storage unit 120, and whether or not the virtual machine needs to be activated. Determine whether.
When the activation sequence determination unit 134 determines that it is not necessary to activate the virtual machine, the activation control unit 132 performs database construction processing after the loading operation (executed at the time indicated by TM-B) of the optical disk 160 is completed. (The time required for this database construction process is TM-C).
Then, AV information output processing is performed (the time required for this AV information output processing is TM-E).

In the second high-speed startup sequence, when the startup sequence determination unit 134 determines that it is not necessary to start up the virtual machine, the video playback device 100 is started up in a short time without performing a virtual machine startup process that takes a long time. Thus, audio information AD and video information VD can be output.
Even when the activation sequence determination unit 134 determines that it is not necessary to activate the virtual machine, the video playback device 100 may be activated in the first high-speed activation sequence. However, the virtual machine consumes a very large amount of the RAM area of the video playback device 100 and constantly imposes a load on the CPU, which slows down the processing of other operations. Therefore, when it is not necessary to start the virtual machine, it is preferable not to start the virtual machine as in the second fast start sequence.

FIG. 6 is a flowchart showing processing at the time of activation according to the first embodiment. When power is supplied to the video playback device 100, the system control unit 131 in the video playback device 100 is first activated. 6 is based on the premise that the optical disk 160 is inserted into the drive unit 111.
In the activated system control unit 131, the activation sequence determination unit 134 determines whether there is valid next activation determination information 122A in the next activation determination information storage unit 122 (S10). For example, if the flag information of “disc_valid_info” 122B and “title_valid_info” 122C of the next activation determination information 122A is flag information indicating that both are valid, the activation sequence determination unit 134 is effective next activation determination information. It is determined that 122A exists.
If the activation sequence determination unit 134 does not determine that there is valid next activation determination information 122A (No in step S10), the process proceeds to step S11, and if there is valid next activation determination information 122A. If it is determined (Yes in step S10), the process proceeds to step S14.

  In step S11, the activation sequence determination unit 134 determines that the activation is performed in the normal activation sequence illustrated in FIG. 5A, and the activation control unit 132 controls the activation process according to the normal activation sequence according to the determination result.

  Next, the information acquisition unit 133 reads the reproduction control information RC of the optical disc 160 using the drive unit 111 and the stream control unit 112 (S12).

Then, the information acquisition unit 133 updates the next activation determination information 122A based on the reproduction control information RC read in step S12 (S13).
For example, when there is even one program title in which the flag information indicating that “extent_interactive_flag” 165I is valid is stored in the reproduction control information file 165 shown in FIG. In the next activation determination information 122A shown in FIG. 4, flag information indicating that the “extended interactive disc flag” 122E is valid is held, and when there is no such program title, “extended interactive disc flag”
122E holds flag information indicating invalidity.

Further, the information acquisition unit 133 uses the start time information 165G and end time information 165H of the program title in which flag information indicating that it is valid for “extent_interactive_flag” 165I in the reproduction control information file 165 shown in FIG. The displayed playback times are totaled, and the total total playback time is set as the total playback time of the target program title of the extended interactive function. Also, the playback times indicated by the start time information 165G and the end time information 165H of all program titles in the playback control information file 165 shown in FIG. 3 are totaled, and the total playback time is set as the total playback time of the entire optical disc 160. .
The information acquisition unit 133 calculates the value of the extended title content rate by dividing the total playback time of the target program titles of the extended interactive function thus totaled by the total playback time of the entire optical disc 160. Then, the information acquisition unit 133 stores the calculated extended title content rate value in the “title type configuration rate” 122F of the next activation determination information 122A illustrated in FIG.

Further, the information acquisition unit 133 uses the identification information indicated by “Disc_ID” 165B held in the “disc general information” 165A of the reproduction control information file 165 shown in FIG. 3 in the next activation determination information 122A shown in FIG. The “identification disk ID” 122G is held.
Then, the information acquisition unit 133 holds flag information indicating that valid information is recorded in the “disc configuration information” 122D in the “disc_valid_info” 122B of the next activation determination information 122A illustrated in FIG.

On the other hand, when it is determined in step S10 that valid next activation determination information 122A exists (Yes in step S10), activation sequence determination unit 134 determines next activation determination stored in next activation determination information storage unit 122. Information 122A is read (S14).
Next, the activation sequence determination unit 134 executes activation determination processing for determining whether or not the virtual machine needs to be activated (S15). This activation determination process will be described in detail with reference to FIG.

  Then, the activation sequence determination unit 134 determines whether or not it is necessary to activate the virtual machine according to the processing result of the activation determination process in step S15 (S16). If it is determined that the virtual machine needs to be started (Yes in S16), the process proceeds to step S17. If it is not determined that the virtual machine needs to be started (No in S16), the process proceeds to step S18. Proceed to processing.

  In step S17, the activation sequence determination unit 134 determines that the activation is performed in the first high-speed activation sequence illustrated in FIG. 5A, and the activation control unit 132 performs activation processing according to the first high-speed activation sequence according to the determination result. Control. On the other hand, in step S18, the activation sequence determination unit 134 determines that the activation is performed in the second high-speed activation sequence illustrated in FIG. 5B, and the activation control unit 132 is activated according to the second high-speed activation sequence according to the determination result. Control processing.

FIG. 7 is a flowchart showing activation determination processing according to the first embodiment.
First, whether or not there is a possibility that the activation sequence determination unit 134 may require a virtual machine to reproduce the content recorded on the optical disc 160 from the “extended interactive_disc flag” 122E in the next activation determination information 122A. Is determined (S20). For example, if the “extended interactive disc flag” 122E in the next activation determination information 122A is flag information indicating that it is valid, the activation sequence determination unit 134 reproduces the content recorded on the optical disk 160. When it is determined that there is a possibility that a virtual machine may be required, and this “extended interactive_disc flag” 122E is flag information indicating that the virtual machine is invalid, virtual content is not reproduced for reproduction of content recorded on the optical disc 160. Determine that there is no possibility of requiring a machine.
If the activation sequence determination unit 134 determines that there is a possibility that a virtual machine is required to play back the content recorded on the optical disc 160 (Yes in step S20), the process proceeds to step S21. If it is determined that there is no possibility that a virtual machine is required to play back the content recorded on the optical disc 160 (No in step S20), the process proceeds to step S25.

In step S21, the activation sequence determination unit 134 acquires information held in the “final title configuration information” 122H in the next activation determination information 122A.
Next, the activation sequence determination unit 134 determines that the content of the program title to be reproduced is a virtual machine based on the “extended interactive_title flag” 122K among the information stored in the acquired “final title configuration information” 122H. It is determined whether or not to use (S22). For example, when flag information indicating that the “expanded interactive_title flag” 122K is valid is held, the activation sequence determination unit 134 determines that the content of the program title to be played uses a virtual machine, When flag information indicating invalidity is held in the extended interactive_title flag "122K", it is determined that the content of the program title to be reproduced does not use the virtual machine.
If the activation sequence determination unit 134 determines that the content of the program title to be reproduced uses a virtual machine (Yes in step S22), the activation sequence determination unit 134 proceeds to step S23, and the content of the program title to be reproduced does not use the virtual machine. (No in step S22), the process proceeds to step S24.

  In step S23, the activation sequence determination unit 134 determines that the virtual machine needs to be activated.

  On the other hand, in step S24, the activation sequence determination unit 134 determines that the value of the extended title content rate held in the “title type configuration rate” 122F of the next activation determination information 122A shown in FIG. 4 is greater than a predetermined threshold value α. Determine whether it is larger. If the value of the extended title content rate is larger than the predetermined threshold value α (Yes in step S24), the activation sequence determination unit 134 proceeds to the process of step S23, and the value of the extended title content rate is set in advance. When it is not larger than the predetermined threshold value α (No in step S24), the process proceeds to step S25.

  In step S25, the activation sequence determination unit 134 determines that it is not necessary to activate the virtual machine.

FIG. 8 is a flowchart showing the reproduction stop process of the first embodiment.
First, when the user of the video playback apparatus 100 inputs a playback stop instruction using the operation unit 140, the system control unit 131 controls the decoder block unit 110 and the like to stop playback of the content (S30). .

Next, the information acquisition unit 133 of the system control unit 131 determines whether or not the content of the program title that has received the playback stop instruction can be resumed (S31).
For example, the information acquisition unit 133 specifies the program title corresponding to the content that has been stopped in step S30 from the “start time information” 165G and “end time information” 165H of the playback control information file 165 shown in FIG. Reference is made to “resume_valid_flag” 165J of the specified program title. Then, the information acquisition unit 133 determines that the resume reproduction can be performed when the flag information held in the “resume_valid_flag” 165J is valid, and determines that the flag information is invalid. Is determined to indicate that resume playback cannot be performed.
If the information acquisition unit 133 determines that the resume reproduction cannot be performed (No in step S31), the information acquisition unit 133 proceeds to step S32 and determines that the resume reproduction can be performed (Yes in step S31). In step S33, the process proceeds to step S33.

In step S32, the information acquisition unit 133 updates the next activation determination information 122A shown in FIG. 4 to indicate that the next activation determination information 122A is reproduced from the first play title. For example, the information acquisition unit 133 stores title_id = 0 indicating the first play title as identification information of the program title in the “title number information” 122I of the next activation determination information 122A illustrated in FIG.
Further, the information acquisition unit 133 holds a predetermined initial value in the “stop state information” 122J of the next activation determination information 122A shown in FIG.
Further, the information acquisition unit 133 specifies flag information held in “extent_interactive_flag” 165I of the program title (first play title) whose “title_id” 165E is “0” in the reproduction control information file 165 shown in FIG. Then, the flag information of the “extended interactive_title flag” 122K in the next activation determination information 122A shown in FIG. 4 is updated to be the same as the state indicated by the specified flag information.
Further, the information acquisition unit 133 identifies flag information held in “resume_valid_flag” 165J of the program title (first play title) whose “title_id” 165E is “0”, and the next activation determination information 122A illustrated in FIG. The flag information of “resume_title flag” 122L is updated to be the same as the state indicated by the specified flag information.
Then, the information acquisition unit 133 updates the flag information held in “tile_valid_info” 122C of the next activation determination information 122A illustrated in FIG. 4 to indicate that the flag information is valid.

On the other hand, when it is determined in step S31 that the information acquisition unit 133 can perform resume reproduction (Yes in step S30), the information acquisition unit 133 updates the next activation determination information 122A illustrated in FIG. Thus, the next activation determination information 122A indicates that the reproduction is started from the title whose reproduction is stopped (S33).
For example, the information acquisition unit 133 identifies “title_id”, which is identification information of the program title of the content being played, from the “start time information” 165G and “end time information” 165H of the playback control information file 165 shown in FIG. Then, the identification information indicated by the specified “title_id” is held in the “title number information” 122I.
Further, the information acquisition unit 133 holds the reproduction time and register set value at the time of receiving the reproduction stop instruction input in the “stop state information” 122J of the next activation determination information 122A shown in FIG.
Further, the information acquisition unit 133 identifies flag information held in the “extent_interactive_flag” 165I of the program title of the content whose reproduction has been stopped in step S30 in the reproduction control information file 165 illustrated in FIG. 3, and illustrated in FIG. The flag information of the “extended interactive_title flag” 122K in the next activation determination information 122A is updated to be the same as the state indicated by the specified flag information.
Furthermore, the information acquisition unit 133 holds flag information indicating that it is valid for the “resume_title flag” 122L of the next activation determination information 122A illustrated in FIG.
Then, the information acquisition unit 133 updates the flag information held in “tile_valid_info” 122C of the next activation determination information 122A illustrated in FIG. 4 to indicate that the flag information is valid.

  8 is a process when the user of the video playback apparatus 100 inputs a playback stop instruction using the operation unit 140. The video playback during the playback of content by the video playback apparatus 100 is performed. Even when the user of the apparatus 100 inputs a power-off instruction using the operation unit 140, the same processing as in the flowchart of FIG. 8 is performed. However, when a power-off instruction is input, the system control unit 131 performs a process of turning off the video playback apparatus 100 after the process of step S30 is completed.

  Further, when the video playback device 100 is an in-vehicle video playback device, for example, power supply to the video playback device 100 is stopped in conjunction with an engine key OFF operation. Even in such a case, a charging unit (not shown) for charging electricity is provided in the video playback device 100 so that the same processing as in the flowchart of FIG. It is desirable to supply power to the control unit 130 and the permanent storage unit 120 so that the same processing as in the flowchart of FIG.

As described above, the video playback apparatus 100 according to Embodiment 1 holds the disc configuration information of the inserted optical disc 160 and the final title configuration information of the last played content in the permanent storage unit 120, and Based on this information, it is possible to determine in advance whether or not the virtual machine needs to be started at the next startup. Therefore, the activation sequence is optimized, and the video playback device 100 can be activated in a short time.
Note that optimization refers to extracting only the minimum startup processing necessary for speeding up startup preparation completion, as well as changing the startup processing sequence and performing parallel processing.
For example, in the present embodiment, when it is determined that the virtual machine needs to be started, the virtual machine start-up process with a large CPU load is performed in a time zone in which the CPU load is not required, such as the loading operation of the optical disc 160. Are processed in parallel. On the other hand, if it is determined that the virtual machine does not need to be activated, the activation process of the virtual machine itself is not performed at the time of activation, and thus the activation of the video playback device 100 can be completed very quickly. The present invention is particularly effective in an environment where the optical disk 160 inserted into the drive unit 111 is not changed and the main power supply is frequently turned ON / OFF, as in the in-vehicle video reproduction apparatus.

  As another effect of the first embodiment, when the content recorded on the optical disc 160 having a high content ratio of the program title content using the extended interactive function is played back, the virtual machine is previously set when the video playback device 100 is started up. Can be activated. Therefore, when reproducing the content of the program title using the virtual machine after that, it is not necessary to wait for the virtual machine having a long activation time to be activated, and the total waiting time of the user can be reduced.

Embodiment 2. FIG.
The second embodiment aims to enable an appropriate activation sequence to be selected when the video reproduction device 200 is activated even when the optical disk 260 inserted in the video reproduction device 200 is replaced.
Here, the optical disc 260 in the present embodiment includes discs other than discs conforming to the BD standard, such as discs conforming to the DVD standard and discs conforming to the CD standard.

  FIG. 9 is a schematic block diagram showing a functional configuration of the video reproduction apparatus 200 according to Embodiment 2 of the present invention. As shown in the figure, the video reproduction apparatus 200 includes a decoder block unit 110, a permanent storage unit 220, a temporary storage unit 125, a control unit 230, and an operation unit 140, and has substantially the same configuration as that of the first embodiment. However, the configuration of the permanent storage unit 220 and the configuration of the control unit 230 are different.

  The permanent storage unit 220 includes a virtual machine program storage unit 121, a next activation determination information storage unit 222, and a disk detection information storage unit 223, and has substantially the same configuration as that of the first embodiment, but the next activation determination information. The difference is that the information stored in the storage unit 222 is different, and the disc detection information storage unit 223 is further provided.

The next activation determination information storage unit 222 stores next activation determination information 222A used for determining an activation sequence when the video playback device 200 is activated.
FIG. 10 is a schematic diagram showing the syntax of the next activation determination information 222A. The next activation determination information 222A includes “disc_valid_info” 122B, “title_valid_info” 122C, “disc configuration information” 122D, “final title configuration information” 122H, and “probability information” 222M. However, it is different in that probability information 222M is provided.

The “probability information” 222M holds a probability value indicating the ratio of the content playback history using the virtual machine to the content playback history. For example, in the present embodiment, this probability value indicates the playback time of content using a virtual machine when the content recorded on the optical disc 260 is played back, and the content recorded on the optical disc 260 is played back. It is obtained by dividing by the total playback time.
Here, the reproduction time may be a history after starting to use the video reproduction device 100, or may be a history during a predetermined period (for example, every two weeks).

  The disc detection information storage unit 223 stores disc detection information indicating whether or not at least one of the opening operation and the closing operation of the portion of the drive unit 111 into which the optical disc 260 is inserted has been performed.

  Returning to FIG. 9, the control unit 230 includes a system control unit 231 and a virtual machine execution unit 138, and has substantially the same configuration as that of the first embodiment, but the configuration of the system control unit 231 is different. The system control unit 231 according to the present embodiment includes an activation control unit 132, an information acquisition unit 133, an activation sequence determination unit 234, a medium detection unit 235, and a probability information calculation unit 236. The activation sequence determination unit 234 is different in processing, and further includes a medium detection unit 235 and a probability information calculation unit 236.

As in the first embodiment, the activation sequence determination unit 234 refers to the next activation determination information 222A stored in the next activation determination information storage unit 222, and activates the virtual machine when the video playback device 200 is activated. Or not, and a process of selecting the video playback device 200 activation sequence is performed.
Here, in the present embodiment, the activation sequence determination unit 234 activates the video playback device 200 when the medium detection unit 235 detects a situation in which the optical disc 260 is replaced, as shown in FIG. It is determined whether to start with the first high-speed startup sequence shown in FIG. 5A or with the second high-speed startup sequence shown in FIG.

The medium detection unit 235 detects whether or not a situation in which the optical disk 260 is replaced occurs. For example, in the present embodiment, the medium detection unit 235 monitors at least one of the opening operation and the closing operation of the portion of the drive unit 111 into which the optical disc 260 is inserted, and at least one of these operations is performed. If it is detected, the disc detection information stored in the disc detection information storage unit 223 is updated, and this disc detection information is executed by at least one of the opening operation and the closing operation of the portion into which the optical disc 260 is inserted. To show that it was broken.
When the next activation determination information 222A stored in the next activation determination information storage unit 222 is updated, the medium detection unit 235 displays the disk detection information stored in the disk detection information storage unit 223. The disc detection information is updated to indicate that at least one of the opening operation and the closing operation of the portion into which the optical disc 260 is inserted is not performed.

  Further, the medium detection unit 235 determines whether or not the optical disc 260 inserted in the drive unit 111 is a Blu-ray disc. For example, the medium detection unit 235 irradiates the optical disc 260 with a light beam, detects the light beam reflected from the optical disc 260 as an electrical signal with a photodetector (not shown), and the optical disc 260 is a Blu-ray disc from this detection signal. It may be determined whether or not.

When the content information recorded on the optical disc 260 is reproduced, the probability information calculation unit 236 reproduces the total reproduction time of the content recorded on the optical disc 260 and the content recorded on the optical disc 260. The playback time of content using the virtual machine is timed and accumulated.
Then, the probability information calculation unit 236 displays the reproduction time of the content using the virtual machine when reproducing the content recorded on the optical disc 260 at a predetermined time (for example, periodically) on the optical disc 260. The value of probability information is calculated by dividing the recorded content by the total playback time.

In the present embodiment, the value of “probability information” 222M holds the ratio based on the reproduction time, but is not limited to this. For example, the ratio can be set based on the number of insertions into the drive unit 111 for each type of the optical disc 260. In this case, as an example, the value of probability information can be calculated by (number of times of insertion of BD disc) / (number of times of insertion of all discs). Also, for example, the ratio can be based on the number of times content is played back using the virtual machine. In this case, as an example, the value of the probability information can be calculated by (number of times of reproduction of content using a virtual machine) / (number of times of insertion of all content).
Further, the probability information calculation unit 236 updates the next activation determination information 222A, for example, at the timing when the value of the probability information is calculated, and the next activation determination information 222A stored in the next activation determination information storage unit 222 “ The value held in the probability information “222M” indicates the value of the calculated probability information.

FIG. 11 is a flowchart illustrating processing at the time of activation according to the second embodiment. When power is supplied to the video playback apparatus 200, first, the system control unit 231 in the video playback apparatus 200 is activated.
In the activated system control unit 231, the activation sequence determination unit 234 determines whether or not a situation in which the optical disk 260 is replaced occurs in the drive unit 111 of the video reproduction device 200 (S40). For example, when the activation sequence determination unit 234 indicates that the disc detection information stored in the disc detection information storage unit 223 indicates that at least one of the opening operation and the closing operation of the portion into which the optical disc 260 is inserted has been performed. In the case where it is determined that a situation in which the optical disc 260 is replaced has occurred, and this disc detection information indicates that at least one of the opening operation and the closing operation of the portion into which the optical disc 260 is inserted is not performed. Then, it is determined that the situation in which the optical disk 260 is replaced has not occurred.
If the activation sequence determination unit 234 determines that a situation in which the optical disk 260 is replaced has occurred (Yes in step S40), the process proceeds to the process of step S41, and it is determined that there is no situation in which the optical disk 260 is replaced. If it is determined (No in step S40), the process proceeds to step S48.

  In step S41, the medium detection unit 235 determines whether or not the optical disc 260 inserted in the drive unit 111 is a Blu-ray disc. Then, when the optical disc 260 is a Blu-ray disc (Yes in S41), the medium detection unit 235 proceeds to the process of step S42, and when the optical disc 260 is not a Blu-ray disc (No in S41). The process proceeds to step S44.

In step S42, the medium detection unit 235 notifies the activation sequence determination unit 234 that the optical disc 260 is a Blu-ray disc, and the activation sequence determination unit 234 that has received such notification is shown in FIG. It is determined whether or not the value of “probability information” in the next activation determination information 222A is larger than a predetermined threshold β (S42). That is, the activation sequence determination unit 234 determines from the playback history of the video playback device 200 whether or not the possibility that the virtual machine is used for content playback is greater than a predetermined threshold β.
When the value of “probability information” 222M is larger than the predetermined threshold β (Yes in step S42), the activation sequence determination unit 234 proceeds to the process of step S43, and determines the value of “probability information”. However, if it is not larger than the predetermined threshold β (No in step S42), the process proceeds to step S44.

  In step S43, the activation sequence determination unit 234 determines that the activation is performed in the first high-speed activation sequence illustrated in FIG. 5A (determines that the virtual machine needs to be activated), and the activation control unit 132 performs the determination according to the determination result. The startup process is controlled according to the first high-speed startup sequence. On the other hand, in step S44, the activation sequence determination unit 234 determines that the activation is performed in the second high-speed activation sequence illustrated in FIG. 5B (determines that the virtual machine is not required to be activated), and the activation control unit is determined according to the determination result. 132 controls the start-up process according to the second high-speed start-up sequence. That is, when the optical disk 260 is a DVD or a CD, a virtual machine is not required, so the second fast startup sequence is selected.

  Next, the information acquisition unit 133 reads the reproduction control information RC of the optical disc 260 using the drive unit 111 and the stream control unit 112 (S45).

  Then, the information acquisition unit 133 updates the next activation determination information 122A based on the reproduction control information RC read in step S45 (S46). This process is the same as step S13 in FIG.

  Next, the medium detection unit 235 updates the disk detection information stored in the disk detection information storage unit 223, and this disk detection information is at least one of an opening operation and a closing operation of a portion into which the optical disk 260 is inserted. It is shown that one of them is not performed (S46).

  On the other hand, when it is determined in step S40 that the optical disc 260 has not been replaced (No in step S40), the activation sequence determination unit 234 proceeds to the activation process in the first embodiment shown in FIG.

  As described above, according to the video reproduction device 200 in the second embodiment, since it is possible to determine whether or not a situation in which the optical disc 260 is replaced has occurred, the optical disc 260 inserted in the video reproduction device 200 has been changed. Even in this case, there is a high possibility that an appropriate activation sequence is selected when the video playback device 200 is activated.

  Further, as another effect of the second embodiment, the activation sequence can be selected based on the reproduction history of the optical disc 260 inserted in the past. Therefore, in the video reproduction apparatus 200, there is a high possibility that an appropriate activation sequence is selected even when the optical disk 260 is forcibly ejected.

  In the second embodiment, whether or not the inserted optical disk 260 has been replaced is determined based on whether or not at least one of the opening operation and the closing operation of the portion of the drive unit 111 into which the optical disk 260 is inserted has been performed. However, it is not limited to such an embodiment. For example, the medium detection unit 235 stores the identification information of the optical disc 260 (for example, the identification information held in “Disc_ID” 165B) when the power is turned off in the disc detection information storage unit 223, and the activation sequence determination unit 234. However, the replacement of the optical disk 260 may be determined based on whether or not it is the same as the optical disk 260 at the time of starting the video reproduction apparatus 200. Further, the medium detection unit 235 may acquire information regarding whether or not the drive unit 111 has performed a forced ejection operation, and may determine whether or not the identification information of the optical disc 260 is different.

In the first and second embodiments described above, when the optical discs 160 and 260 inserted in the drive unit 111 are replaced, the information acquisition unit 133 uses the drive unit 111 and the stream control unit 112. The reproduction control information RC may be acquired (read), and the next activation determination information 122A stored in the next activation determination information storage unit 122 may be updated. In such a case, for example, when the drive unit 111 or the medium detection unit 235 detects the replacement of the optical disks 160 and 260, the information acquisition unit 133 “disc_valid_info” 122B and “title_valid_info” of the next activation determination information 122A. The flag information held in 122C is updated to indicate that it is invalid.
Then, when the next activation determination information 122A is updated based on the information held in the reproduction control information RC, the information acquisition unit 133 updates the next activation determination information 122A to “ The flag information of disc_valid_info ”122B is updated to indicate that it is valid.

  100, 200 video playback device, 110 decoder block unit, 111 drive unit, 112 stream control unit, 113 decoder unit, 114 superimposing unit, 120 permanent storage unit, 121 virtual machine program storage unit, 122, 222 next activation determination information storage unit 223, disk detection information storage unit, 130, 230 control unit, 131 system control unit, 132 activation control unit, 133 information acquisition unit, 134 activation sequence determination unit, 235 medium detection unit, 236 probability information calculation unit, 138 virtual machine execution Part, 140 operation part, 160,260 optical disc, 170 display device.

Claims (8)

An information acquisition unit for acquiring next activation determination information capable of determining whether or not the virtual machine needs to be activated for reproduction of the content used for the previous reproduction;
A storage unit for storing the next activation determination information;
Based on the next start determination information, it is determined whether or not the virtual machine needs to be started for the reproduction of the content. When it is determined that the virtual machine needs to be started, it is determined that the virtual machine does not need to be started. An activation sequence determination unit that selects a different activation sequence, and
An activation control unit that controls the activation process according to the activation sequence selected by the activation sequence determination unit;
A video playback apparatus comprising: The next activation determination information includes first flag information indicating whether or not content using the virtual machine is recorded,
The activation sequence determination unit determines that the activation of the virtual machine is unnecessary when the first flag information indicates that no content using the virtual machine is recorded. 2. The video reproduction device according to 1. The next activation determination information includes second flag information indicating whether or not the content that starts reproduction after activation among the contents uses the virtual machine,
If the second flag information indicates that content that starts playback after startup uses the virtual machine among the recorded contents, the startup sequence determination unit may start the virtual machine. The video reproduction device according to claim 1, wherein the video reproduction device is determined to be necessary. The next activation determination information further includes a content value indicating a ratio of content using the virtual machine among the content,
The activation sequence determination unit has the content rate value determined in advance even when the second flag information indicates that content that starts reproduction after activation does not use the virtual machine. 4. The video playback apparatus according to claim 3, wherein when it is larger than the threshold value, it is determined that the virtual machine needs to be activated. An information acquisition process in which the information acquisition unit acquires next-time startup determination information capable of determining whether or not the virtual machine needs to be started for playback of the content used for the previous playback;
An information storage process for storing the next activation determination information in a storage unit;
A determination step of determining whether or not the virtual machine needs to be activated for reproduction of the content based on the next activation determination information;
A selection process of selecting different startup sequences depending on whether the startup sequence determination unit determines that the virtual machine needs to be started and when it is determined that the virtual machine does not need to be started.
An activation process in which an activation control unit controls an activation process according to the selected activation sequence;
A method for starting up a video reproduction apparatus, comprising: The next activation determination information includes first flag information indicating whether or not the content is recorded,
The activation sequence determination unit determines that the activation of the virtual machine is unnecessary when the first flag information indicates that content using the virtual machine is not recorded in the determination process. The startup method according to claim 5, wherein: The next activation determination information further includes second flag information indicating whether or not content that starts reproduction after activation uses the virtual machine among the contents,
In the determination process, the activation sequence determination unit, in the case where the second flag information indicates that, of the contents, content that starts reproduction after activation uses the virtual machine, The activation method according to claim 5 or 6, wherein the activation is determined to be necessary. The next activation determination information further includes a content value indicating a ratio of content using the virtual machine among the content,
In the determination process, the activation sequence determination unit may determine the content ratio value even when the second flag information indicates that content that starts reproduction after activation does not use the virtual machine. The startup method according to claim 7, wherein when the virtual machine is larger than a predetermined threshold, it is determined that the virtual machine needs to be started.

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