JP2007006332A - Digest data generating device, digest data generating method and digest data generating program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide techniques for not affecting another processing even if the other processing is carried out together while generating digest data in one apparatus. <P>SOLUTION: In a device for generating digest data, the situation of using resources of another task to be carried out together while generating digest data, is acquired. In accordance with the acquired situation of using the resources for carrying out the other task, control to change the situation of using resources of a task to be carried out for generating digest data or temporary stop of the task to be carried out for generating digest data is instructed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for generating information for reproducing a summary of moving image data.

  There is a function of playing back a distributed video and a summary of video data read from a recording medium such as an HDD (Hard Disk Drive) or a DVD (Digital Versatile Disk). Hereinafter, reproducing a summary of moving image data is referred to as digest reproduction. A technique for performing such digest reproduction is described in Patent Document 1.

  Patent Document 1 describes that marking is given to an unimportant part, and when the moving image data is reproduced, the marked part is skipped and reproduced.

JP 2003-153139 A

  In order to perform digest playback as described above, information indicating the playback location of moving image data is required. Hereinafter, this information is referred to as digest data. Digest data is generated in advance before digest reproduction. When generating digest data, one apparatus may execute other processing together with digest data generation. For example, in the case of an image playback device having a digest data generation function, digest data may be generated by the image playback device and a moving image may be played back by the same device. In such a case, resources such as a CPU (Central Processing Unit) are used for digest data generation, which may affect other processes. For example, if a moving image is being played along with digest data generation, frame dropping or the like may occur.

  The present invention has been made in view of such circumstances, and a technique capable of reducing the influence on other processes even if digest data is generated and another process is executed by one apparatus. The purpose is to provide.

  The present invention was made to achieve the above object, and in an apparatus that executes a plurality of tasks including generation of digest data, depending on the situation of resources used to execute other tasks, It controls the processing of a task that generates digest data.

  For example, the present invention is a digest data generation device capable of executing in parallel a plurality of tasks including a task for generating digest data indicating a playback location of moving image data, the task for generating the digest data Resource information acquisition means for acquiring information on resources in use by other tasks that are executed in parallel, and processing contents in the task for generating the digest data based on the acquired resource information And a control means.

  According to the technology of the present invention, even if digest data is generated and another process is executed by one apparatus, the influence on the other process can be reduced.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  Although the digest data generation device described in the present embodiment is described as having a function of reproducing moving image data in addition to the function of generating digest data, the present invention is not limited to this. The function of the digest data generation apparatus is arbitrary, and the number of functions of the apparatus is also arbitrary.

  FIG. 1 is a diagram illustrating a configuration example of a digest data generation apparatus according to the present embodiment. In FIG. 1, a digest data generation device 1 includes a CPU 11, a memory 12, a storage device 13, an input device 14, an output device 15, a moving image data input interface 16, a bus 17, and the like. Each of the CPU 11, the memory 12, the storage device 13, the input device 14, the output device 15, and the moving image data input interface 16 is connected to each other via a bus 17.

  The storage device 13 is, for example, a writable and readable storage medium such as an HDD, a CD-R, or a DVD-RAM, and the storage medium driving device. The storage device 13 stores moving image data 131, digest data 132, a digest data generation rule table 133, an operating system program (hereinafter referred to as OS) 21, a moving image reproduction program 22, a digest data generation program 23, and the like.

  The OS 21 executes each process of a plurality of programs in parallel by switching each process executed by the CPU 11 at predetermined time intervals. Hereinafter, processing for each program executed by the CPU 11 while the OS 21 is switching is referred to as a task. The moving image reproduction program 22 is a program that decodes the moving image data 131 and outputs the decoded data to the output device 15. The digest data generation program 23 is a program that generates digest data 132 from the moving image data 131.

  The input device 14 is, for example, a button, a dial, a remote control and a remote control reception device, a keyboard, a mouse, or the like.

  The output device 15 is, for example, an output interface that outputs image data or the like to a display, a speaker, another display, or the like.

  The moving image data input interface 16 is, for example, a communication interface connected to a communication network such as the Internet, an interface to which distributed moving image data such as broadcast is input, and the like.

  FIG. 2 is an example of a functional block diagram of the digest data generation device 1. In FIG. 2, a digest data generation device 1 includes a resource allocation unit 211, a process execution unit 212, a resource usage rate acquisition unit 213, a video data playback unit 221, a video data playback control unit 222, a digest data generation unit 231, and digest data generation. A control unit 232 and the like are included. Each unit such as the resource allocation unit 211, the process execution unit 212, and the resource usage rate acquisition unit 213 is realized by the CPU 11 executing the OS 21 loaded in the memory 12. Each unit such as the moving image data reproduction unit 221 and the moving image data reproduction control unit 222 is realized by the CPU 11 executing the moving image reproduction program 22 loaded in the memory 12. Each unit such as the digest data generation unit 231 and the digest data generation control unit 232 is realized by the CPU 11 executing the digest data generation program 23 loaded in the memory 12.

  The resource allocation unit 211 allocates the resource usage rate of each program to a program such as each application program (hereinafter referred to as AP) executed by the digest data generation apparatus 1. Here, it is assumed that the resource allocation unit 211 allocates the usage rate of the CPU 11. The process execution unit 212 executes a task instructed by the program. At this time, the process execution unit 212 changes the priority order of each task so that the usage time of the CPU 11 for executing the task for each program becomes the usage rate of the CPU 11 allocated by the resource allocation unit 211. And control. The resource usage rate acquisition unit 213 acquires the usage status of resources used for task execution of each program executed by the digest data generation device 1. Here, it is assumed that the resource usage rate acquisition unit 213 acquires the usage rate of the CPU 11.

  The resource allocation unit 211, the process execution unit 212, and the resource usage rate acquisition unit 213 are functions that the conventional OS 21 has.

  The moving image data reproducing unit 221 reproduces the moving image data 131 read from the storage device 13. The moving image data reproduction control unit 222 controls the moving image data reproduction unit 221 to reproduce only the portion indicated by the digest data 132 according to the digest data 132 read from the storage device 13. Specifically, for example, in accordance with the location indicated in the digest data 132, information for instructing playback or skipping of a specific location is output to the moving image data playback unit 221.

  The digest data generation unit 231 generates digest data from the moving image data 131 read from the storage device 13. The digest data generation control unit 232 determines the processing of the digest data generation unit 231 from the resource usage status for each program acquired from the resource usage rate acquisition unit 213 and the digest data generation rule table 133 read from the storage device 13. Then, according to the determination result, the operation of the digest data generation unit 231 is controlled.

  In the present embodiment, the digest data generation control unit 232 performs the digest based on the current CPU 11 usage rate of the moving image data reproduction unit 221 acquired by the resource usage rate acquisition unit 213 and information in the digest data generation rule table 133. By controlling the processing of the data generation unit 231, the processing content of the task executed by the processing execution unit 212 is controlled.

  Note that the moving image data reproduction unit 221 and the moving image data reproduction control unit 222 are functions of a conventional digest data reproduction device or the like.

  The operation of generating digest data by the digest data generation unit 231 is arbitrary and is not particularly limited. In the present embodiment, the digest data generation unit 231 will be described as automatically generating digest data.

  In order to automatically generate the digest data, for example, the digest data generating apparatus 1 receives a category of moving image data (for example, sports, movie, documentary, etc.) for generating the digest data. This information may be input from the input device 14 or may be input from a communication interface (not shown) connected to the Internet or the like. The digest data generation unit 231 divides the moving image data into frames, predetermined time intervals, a predetermined amount of data, and the like, and determines the playback location from the sound or image for each moving image data according to the input category. judge. Specifically, for example, if the category is “sports”, the digest data generation unit 231 determines that a scene with a large movement or a scene with a large audience cheer is high in importance, and plays a segment including the scene. Generate digest data for the location.

  The digest data of this embodiment is obtained by adding information indicating how much digest data has been generated to conventional digest data. Here, the information indicating how much digest data has been generated is indicated by the total data amount of the moving image data from which the digest data is generated and the data amount of the digest data generated from the original moving image data. Shall. FIG. 3 shows an example of the digest data 132. In FIG. 3, digest data 132 includes moving image data 301, total data amount 302, processing end data amount 303, digest data list 304, and the like. The moving image data 301, the total data amount 302, the processing end data amount 303, the digest data list 304, and the like are associated with each other.

  The moving image data 301 is information indicating moving image data that is the source of digest data, and is, for example, the file name of the original moving image data. The total data amount 302 is the total data amount (byte or the like) of the moving image data indicated in the corresponding moving image data 301. The processing end data amount 303 is information indicating a part of the moving image data indicated in the corresponding moving image data 301 where the generation of digest data has been completed. In this embodiment, it is assumed that the processing end data amount 303 is a data amount (byte or the like) from the start position of the moving image data to the position where the digest data is generated. The digest data list 304 is the same as the conventional digest data. For example, the digest data list 304 is information that uniquely indicates each section obtained by dividing the moving image data for generating the digest data by each frame, every predetermined time interval, every predetermined amount of data, and the like. And information indicating the importance of each section.

  FIG. 4 is an example of the digest data generation rule table 133. In FIG. 4, the digest data generation rule table 133 includes a resource usage rate 401, an operation mode 402, an operation level 403, and the like. The resource usage rate 401, the operation mode 402, the operation level 403, and the like are associated with each other.

  The resource usage rate 401 is set so that the digest data generation control unit 232 controls the digest data generation unit 231 when both the reproduction of the video data by the video data reproduction unit 221 and the generation of digest data by the digest data generation unit 231 are performed. Indicates the resource usage rate conditions. Here, the usage rate of the resource as a condition is assumed to be the usage rate of the CPU 11. In the example of FIG. 4, the CPU usage rate indicated by the resource usage rate 401 is the moving image data when the resource usage unit 211 assigns the CPU usage rate assigned to the operation of the moving image data playback unit 221 to 100%. This is the current CPU usage rate of the playback unit 221. Specifically, for example, the resource allocation unit 211 allocates 30% of the total usage rate of the CPU 11 to the moving image data reproduction unit 221, and 15 out of the total usage rate of the CPU 11 due to the operation of the moving image data reproduction unit 221. % Is used, the CPU usage rate of the video data playback unit 221 is “50%” when the CPU usage rate assigned to the video data playback unit 221 is 100%. The rate 401 corresponds to “50 ≦ X <65”.

  The operation mode 402 is information for determining the operation mode of the digest data generation unit 231 when the resource usage rate 401 is the corresponding one. Here, it is assumed that “execution” and “pause” are set in the operation mode 402 of the digest data generation unit 231. The operation mode 402 “execute” indicates that the digest data generation unit 231 generates digest data. The operation mode 402 “pause” indicates that the digest data generation unit 231 temporarily stops generating digest data. In the example of FIG. 4, the operation mode 402 corresponding to the resource usage rate 401 “0 ≦ X <50” is “execution”. The operation mode 402 “no change” corresponding to the resource usage rates 401 “50 ≦ X <65” and “65 ≦ X <80” is the operation mode “execution” or “pause” of the digest data generation unit 231 until then. Indicates that you will continue. The operation mode 402 corresponding to the resource usage rate 401 “80 ≦ X” is “pause”.

  The behavior level 403 is information indicating the resource ratio in the task of the digest data generation unit 231 executed by the process execution unit 212 when the resource usage rate 401 is the corresponding one. In this embodiment, the resource usage rate 401 “0 ≦ X <50”, “50 ≦ X <65”, and “65 ≦ X <80” are decreased in order, and the ratio of resources in the task of the digest data generation unit 231 is reduced. Shall be. Specifically, for example, when the operation level 403 “Full” corresponding to the resource usage rate 401 “0 ≦ X <50” is satisfied, the CPU 11 executes the tasks of the moving image data reproduction unit 221 and the digest data generation unit 231 respectively. It shows that the processing of the digest data generation unit 231 is controlled so that the usage time ratio of “1: 1” becomes “1: 1”. When the operation level 403 corresponding to the resource usage rate 401 “50 ≦ X <65” is “High”, the ratio of the usage time of the CPU 11 due to the task execution of each of the moving image data reproduction unit 221 and the digest data generation unit 231 is “ It indicates that the processing of the digest data generation unit 231 is controlled to be “2: 1”. When the operation level 403 “Middle” corresponds to the resource usage rate 401 “65 ≦ X <80”, the ratio of the usage time of the CPU 11 by the task execution of each of the moving image data reproduction unit 221 and the digest data generation unit 231 is “ It indicates that the process of the digest data generation unit 231 is controlled to be “3: 1”.

  Next, an operation example of the digest data generation device 1 will be described with reference to the drawings.

  In FIG. 5, when the moving image data reproducing unit 221 is activated, the resource allocating unit 211 assigns the usage rate of the CPU 11 that can be used by the moving image data reproducing unit 221. The process execution unit 212 controls the usage rate of the CPU 11 in the task of the moving image data reproduction unit 221 to be the usage rate allocated by the resource allocation unit 211. The moving image data reproduction unit 221 reads the moving image data 131 from the storage device 13 and outputs moving images, sounds, and the like to the output device 15 such as a display or a speaker.

  On the other hand, when the moving image data reproducing unit 221 is activated, any moving image data stored in the storage device 13 is designated, and generation of digest data is instructed, the digest data generating unit 231 and digest data generation control are performed. The unit 232 and the like are activated. The moving image data that is the source of the digest data generated here may be the same as or different from the moving image data reproduced by the moving image data reproducing unit 221. When activated, the digest data generation control unit 232 performs the operation described below at predetermined time intervals. The digest data generation control unit 232 first determines whether or not the generation of digest data of moving image data instructed to generate digest data has been completed (S501). Specifically, for example, the digest data generation control unit 232 matches the moving image data 301 included in each digest data 132 from the storage device 13 with the file name of the moving image data that is the source of the generated digest data. When the digest data 132 is searched and the corresponding digest data 132 exists, the total data amount 302 and the processing end data amount 303 of the digest data 132 are read, and the data amount of the total data amount 302 and the processing end data amount 303 are read. If the amount of data is the same, it is determined that the generation of digest data has been completed.

  If the digest data generation is completed as a result of the determination in S501, the digest data generation control unit 232 outputs information notifying that the digest data generation is completed to the output device 15 such as a display. To end the process.

  If the digest data generation is not completed as a result of the determination in S <b> 501, the digest data generation control unit 232 acquires the usage rate of the CPU 11 assigned to the moving image data playback unit 221 from the process execution unit 212. Next, the digest data generation unit 231 acquires the usage rate of the CPU 11 currently used by the moving image data reproduction unit 221 from the resource usage rate acquisition unit 213 every predetermined time or the like (S502).

  When the usage rate of the CPU 11 acquired in the process of S502 is “0% or more and less than 50%” with respect to the CPU usage rate allocated by the resource allocation unit 211 to the operation of the moving image data reproduction unit 221 (S503), digest data generation The control unit 232 proceeds to an operation flow “A” described later.

  When the usage rate of the CPU 11 acquired in the processing of S502 is “50% or more and less than 65%” with respect to the CPU usage rate allocated by the resource allocation unit 211 to the operation of the moving image data reproduction unit 221 (S504), digest data generation The control unit 232 proceeds to an operation flow “B” described later.

  When the usage rate of the CPU 11 acquired in the process of S502 is “65% or more and less than 80%” with respect to the CPU usage rate allocated by the resource allocation unit 211 to the operation of the moving image data reproduction unit 221 (S505), digest data generation The control unit 232 proceeds to an operation flow “C” described later.

  When the usage rate of the CPU 11 acquired in the process of S502 is other than the above, that is, when the resource allocation unit 211 is “80% or more” with respect to the CPU usage rate allocated to the operation of the moving image data playback unit 221, In step 232, the process proceeds to an operation flow “D” described later.

  An example of the operation flow of “A” will be described with reference to FIG.

  The digest data generation control unit 232 determines whether or not the operation mode of the digest data generation unit 231 is “pause” (S601). In order to determine whether the operation mode of the digest data generation unit 231 is “pause”, for example, the digest data generation control unit 232 sets “execution” or “pause” of the operation mode of the digest data generation unit 231. You may determine by referring the flag which shows.

  If the operation mode is “temporary stop” as a result of the determination in S601, the digest data generation control unit 232 instructs the digest data generation unit 231 to restart generation (S602). For this purpose, for example, the digest data generation control unit 232 changes the flag indicating “execution” or “pause” of the operation mode of the digest data generation unit 231 to indicate “execution”.

  If the operation mode is not “pause” as a result of the determination in S601, or after the processing in S602, the digest data generation control unit 232 performs the digest data generation unit 231 in accordance with the CPU usage rate acquired in the operation in S502. The operation level is set (S603). Specifically, for example, the digest data generation control unit 232 is associated with the resource usage rate 401 “0 ≦ X <50” that matches the CPU usage rate acquired in the operation of S502 from the digest data generation rule table 133. The operation level 403 “Full” is read, and the processing of the digest data generation unit 231 is controlled so as to reach the read operation level. Here, the operation for the digest data generation control unit 232 to control the processing of the digest data generation unit 231 is not particularly limited. For example, the digest data generation control unit 232 sets the processing amount of the moving image data for which the digest data generation unit 231 generates digest data in one process in the order of the operation levels “Full”, “High”, and “Middle”. Reduce. The digest data generation unit 231 performs the same processing as the conventional digest data generation for the set data amount in the moving image data 131. In addition, for example, a table or the like indicating processing with a light load on the CPU 11 and processing with a heavy load on the CPU 11 is stored in the storage device 13 or the like in advance, and the digest data generation control unit 232 stores the table or the like. Then, the processing of the load corresponding to the operation level is read, and the digest data generation unit 231 is instructed to execute the read processing. The digest data generation unit 231 executes the instructed process. For example, the digest data generation control unit 232 may control the operation level by changing the priority order of tasks executed by the process execution unit 212.

  When the digest data generation control unit 232 sets the operation level of the digest data generation unit 231, the process proceeds to an operation flow “E” described later.

  Next, an example of the operation flow of “B” will be described with reference to FIG.

  The digest data generation control unit 232 determines whether or not the operation mode of the digest data generation unit 231 is “pause” (S701). A specific example of this operation is the same as S601 described above.

  If the operation mode is “temporary stop” as a result of the determination in S701, the digest data generation control unit 232 ends the current process, and performs the process illustrated in FIG. 5 again after a predetermined time.

  If the operation mode is not “pause” as a result of the determination in S701, the digest data generation control unit 232 sets the operation level of the digest data generation unit 231 according to the CPU usage rate acquired in the operation of S502 (S702). ). A specific example of this operation is the same as S603 described above, and is therefore omitted.

  When the digest data generation control unit 232 sets the operation level of the digest data generation unit 231, the process proceeds to an operation flow “E” described later.

  Next, an example of the operation flow of “C” will be described with reference to FIG.

  The digest data generation control unit 232 determines whether or not the operation mode of the digest data generation unit 231 is “pause” (S801). A specific example of this operation is the same as S601 described above.

  If the operation mode is “temporary stop” as a result of the determination in S801, the digest data generation control unit 232 ends the current process, and performs the process illustrated in FIG. 5 again after a predetermined time.

  If the operation mode is not “pause” as a result of the determination in S801, the digest data generation control unit 232 sets the operation level of the digest data generation unit 231 according to the CPU usage rate acquired in the operation of S502 (S802). ). A specific example of this operation is the same as S603 described above, and is therefore omitted.

  When the digest data generation control unit 232 sets the operation level of the digest data generation unit 231, the process proceeds to an operation flow “E” described later.

  Next, an example of the operation flow “D” will be described with reference to FIG.

  The digest data generation control unit 232 determines whether or not the operation mode of the digest data generation unit 231 is “pause” (S901). A specific example of this operation is the same as S601 described above.

  If the operation mode is “pause” as a result of the determination in S901, the digest data generation control unit 232 terminates the current process, and again performs the process illustrated in FIG. 5 after a predetermined time.

  If the operation mode is not “pause” as a result of the determination in S901, the digest data generation control unit 232 instructs the digest data generation unit 231 to pause (S902). For this purpose, for example, the digest data generation control unit 232 changes the flag indicating “execution” or “pause” of the operation mode of the digest data generation unit 231 to indicate “pause”.

  The digest data generation unit 231 stores in the storage device 13 information indicating the location where digest data generation has ended at this time (hereinafter referred to as progress information) in the storage device 13 (S903). Specifically, for example, the digest data generation unit 231 reads the digest data 132 generated by the operation described below from a predetermined area of the memory 12 and stores a copy of the digest data 132 or the like in the storage device 13. .

  The digest data generation control unit 232 terminates the current process after instructing a temporary stop, and again performs the process illustrated in FIG. 5 after a predetermined time.

  Next, an example of the operation flow “E” will be described with reference to FIG.

  The digest data generation unit 231 acquires progress information of digest data generation (S1001). Specifically, for example, the digest data generation unit 231 reads the total data amount 302 and the processing end data amount 303 of the digest data 132.

  Next, the digest data generation unit 231 reads out the moving image data 131 for generating digest data from the storage device 13 (S1002). The digest data generation unit 231 generates digest data of the read moving image data 131 at a set operation level according to the location indicated by the read progress information (S1003). Specifically, for example, the digest data generation unit 231 generates digest data from the next position indicated by the read processing end data amount 303. At this time, the digest data generation unit 231 generates digest data according to the operation level set by the digest data generation control unit 232 as described above. The digest data generation unit 231 updates information on the area in the memory 12 that stores the processing end data amount 303, the digest data list 304, and the like.

  Next, the digest data generation unit 231 determines whether the generation of digest data has been completed (S1004). Specifically, for example, the digest data generation unit 231 compares the total data amount 302 of the digest data 132 in the memory 12 with the processing end data amount 303, and if both data amounts match, the digest data is generated. It is determined that the process has ended.

  If the digest data generation has not ended as a result of the determination in S1004, the digest data generation unit 231 ends the current process. The digest data generation control unit 232 performs the process illustrated in FIG. 5 again after a predetermined time.

  If the digest data generation has been completed as a result of the determination in S1004, the digest data generation unit 231 notifies the digest data generation control unit 232 that the digest data generation has ended. The digest data generation unit 231 outputs information notifying that the digest data generation has ended to the output device 15 such as a display, and ends the process.

  As described above, according to the digest data generation device 1 of the present embodiment, it is possible to generate digest data according to the availability of the CPU usage rate allocated to other tasks such as moving image playback.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like within a scope not departing from the gist of the present invention.

  For example, in the above-described embodiment, the digest data generation control unit 232 determines whether or not the digest data generation needs to be suppressed based on the CPU usage rate of the moving image data reproduction unit 221, but is not limited thereto. Do not mean. When the digest data generation device has another program execution function, it may be determined whether or not it is necessary to suppress the digest data generation based on the resource usage rate by the task execution of the program. In addition to determining the necessity of suppressing digest data generation based on the resource usage rate due to task execution of a single program, the necessity of suppressing digest data generation based on the resource usage rate due to task execution of each of a plurality of programs. You may judge. For example, the CPU usage rate assigned to each of the first program and the second program is 30%, the actual CPU usage rate by the task execution of the first program is 10%, and the task execution of the second program When the actual CPU usage rate is 5%, the total CPU usage rate assigned to the first program and the second program (60% of the total usage rate of the CPU 11) is 100. The total rate (15% of the total usage rate of the CPU 11) is 25%. In the case of the digest data generation rule table 133 shown in FIG. 4 as an example, the resource usage rate 401 is “0 ≦ X <50”, so the operation level of the digest data generation unit 231 is set so that the operation level 403 is “Full”. Set. As described above, when determining the necessity of suppressing digest data generation based on the CPU usage rate due to the task execution of each of a plurality of programs, the digest data generation device 1 includes, for example, a digest data generation unit 231 and a digest data generation control unit. A function such as H.232 may be provided as a DLL (Dynamic Link Library).

  Further, in the above-described embodiment, the information (progress information) indicating how much digest data has been generated is described as being indicated by the total amount of moving image data for which digest data is generated and the amount of data for which digest data has been generated. However, it is not limited to this. For example, it may be the total playback time of the moving image data and the playback time up to the place where the digest data is generated, or the frame where the digest data is generated. Further, the progress information may not be included in the digest data as in the above-described embodiment, and may be stored in another table or the like.

  In the above embodiment, the digest data is automatically generated. However, the operation for generating the digest data is not limited to this. For example, it may be generated based on an important place or an unimportant place indicated by the viewer. In addition, digest data may be generated by operations other than those described above.

In one Embodiment of this invention, an example of the block diagram of a digest data production | generation apparatus is shown. In the embodiment, an example of a functional block diagram of a digest data generation device is shown. In the embodiment, an example of digest data is shown. In the embodiment, an example of a digest data generation rule table is shown. FIG. 6 is a diagram for describing an operation example for controlling the generation of digest data in the embodiment. FIG. 6 is a diagram for describing an operation example for controlling the generation of digest data in the embodiment. FIG. 6 is a diagram for describing an operation example for controlling the generation of digest data in the embodiment. FIG. 6 is a diagram for describing an operation example for controlling the generation of digest data in the embodiment. FIG. 6 is a diagram for describing an operation example for controlling the generation of digest data in the embodiment. FIG. 6 is a diagram for describing an operation example for controlling the generation of digest data in the embodiment.

Explanation of symbols

  1: digest data generation device, 11: CPU, 12: memory, 13: storage device, 14: input device, 15: output device, 16: moving image data input interface, 17: bus, 131: moving image data, 132: digest data 133: Digest data generation rule table, 21: OS, 211: Resource allocation unit, 212: Process execution unit, 213: Resource usage rate acquisition unit, 22: Video playback program, 221: Video data playback unit, 222: Video data Playback control unit, 23: digest data generation program, 231: digest data generation unit, 232: digest data generation control unit

Claims (7)

A digest data generation device capable of executing a plurality of tasks in parallel including a task for generating digest data indicating a playback location of video data,
Resource information acquisition means for acquiring information of resources in use by other tasks executed in parallel with the task for generating the digest data;
Control means for controlling processing contents in a task for generating the digest data based on the acquired resource information;
A digest data generation device characterized by comprising: The digest data generation device according to claim 1,
The control means compares the threshold value with the usage rate of the resource in use of the other task acquired by the resource information acquisition means, and the usage rate of the resource in use of the other task is greater than the threshold value. A digest data generation device characterized by temporarily stopping the execution of a task for generating the digest data if it is larger. The digest data generation device according to claim 1,
The control unit compares the threshold value with the resource usage rate of the other task acquired by the resource information acquisition unit, and the resource usage rate of the other task being used is lower than the threshold value. A digest data generation apparatus, characterized in that processing in a task for generating digest data is controlled according to whether the data is large or not. The digest data generation device according to claim 2,
When the execution of the task for generating the digest data is temporarily stopped, the control unit compares the threshold value with the resource usage rate of the other task acquired by the resource information acquisition unit. The digest data generation device, wherein when the usage rate of the resource in use of the other task is smaller than the threshold, execution of the task for generating the digest data is resumed. The digest data generating device according to claim 2 or 4,
When the progress information indicating the location where the digest data generation is completed is stored in the storage means, and the task for generating the digest data is executed, the progress information is read from the storage means, and according to the read progress information A digest data generating apparatus, further comprising progress management means for generating digest data. A digest data generation method by a digest data generation apparatus capable of executing a plurality of tasks in parallel including a task for generating digest data indicating a playback location of video data,
A resource information acquisition step of acquiring information of resources in use by other tasks executed in parallel with the task for generating the digest data;
A control step for controlling processing contents in a task for generating the digest data based on the acquired resource information;
A digest data generation method comprising: A digest data generation program for causing a digest data generation device capable of executing a plurality of tasks including a task for generating digest data indicating a reproduction portion of moving image data in parallel,
A resource information acquisition step of acquiring information of resources in use by other tasks executed in parallel with the task for generating the digest data;
A control step for controlling processing contents in a task for generating the digest data based on the acquired resource information;
A digest data generation program characterized in that is executed.

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