WO2003101102A1 - Dispositif de communication mobile - Google Patents

Dispositif de communication mobile Download PDF

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Publication number
WO2003101102A1
WO2003101102A1 PCT/JP2003/006329 JP0306329W WO03101102A1 WO 2003101102 A1 WO2003101102 A1 WO 2003101102A1 JP 0306329 W JP0306329 W JP 0306329W WO 03101102 A1 WO03101102 A1 WO 03101102A1
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WO
WIPO (PCT)
Prior art keywords
moving image
video
data
image file
communication device
Prior art date
Application number
PCT/JP2003/006329
Other languages
English (en)
Japanese (ja)
Inventor
Aki Kimura
Satoshi Minami
Mitsunobu Yoshinaga
Yasuo Maeda
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to JP2004507247A priority Critical patent/JPWO2003101102A1/ja
Publication of WO2003101102A1 publication Critical patent/WO2003101102A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
    • H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
    • H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals

Definitions

  • the present invention provides a function for playing back data files (hereinafter referred to as "movie files”) downloaded over a network, a function for playing back video files stored during a videophone call (video conference), and a function for playing back video files stored by camera shooting. It relates to mobile communication devices such as next-generation mobile phone devices (for example, conforming to the IMT20000 standard) with functions and the like, and in particular, to the implementation of software groups for playing moving image files on mobile communication devices. Things. Background art
  • the conventional software configuration includes a library that plays video files stored in a videophone, a library that provides a function to play video files that have been stored by downloading, and a camera function of the terminal itself.
  • Libraries that correspond to each function are included, such as a library that provides a function to play back video files acquired by. Therefore, for example, a video file downloaded and stored from a content distribution server is played back; in ⁇ , a playback function is realized by controlling a group of device drivers via a library that provides a playback function of the stored video file.
  • a playback function is realized by controlling a group of device drivers via a library that implements the videophone function.
  • the conventional mobile communication device implements a library for executing each of the playback functions in order to realize the playback of the video file obtained by downloading and the playback of the video file obtained by the videophone function.
  • a number of playback execution libraries according to the type of moving image file are installed. Therefore, when trying to increase the number of types of moving image files that can be handled by the mobile communication device and to increase the functionality of the mobile communication device, the size of the entire installed program became too large. . For this reason, in a conventional software implementation method of a portable communication device,
  • the purpose of the present invention is to provide a portable communication device that employs a software implementation method capable of realizing multi-functionality while suppressing an increase in the size of the entire program to be implemented. Disclosure of the invention
  • One embodiment of the portable communication device of the present invention is an apparatus for handling a plurality of types of moving image files including data having a common format, the moving image file obtaining means for obtaining a moving image file, and displaying a video.
  • the installed software group is capable of processing at least the video data, and displays a
  • the moving image file obtained by the means is in a format that can be processed by the device driver
  • the moving image file obtained by the moving image file obtaining means is read.
  • the moving image file obtained by the moving image file obtaining means is not in a format that can be processed by the depth driver
  • the moving image file obtained by the moving image file obtaining means is separated. Accordingly, a library for executing a reproduction control process for making the device driver use the video data included in the video file acquired by the video file acquisition means. '
  • each of the plurality of types of moving image files includes at least I ⁇ data and audio data.
  • the software group installed in the storage unit includes an application that provides a user interface for each of the plurality of types of moving image files.
  • Still another embodiment of the portable communication device includes: a moving image file acquiring unit, a communication unit that acquires a moving image file, an input device, a video information processing device, a microphone device, and an audio information processing device.
  • a moving image that generates a moving image file containing video data obtained by the input device and encoded by the video information processing device and audio data obtained by the microphone device and encoded by the audio information processing device; Photographing means.
  • the moving image file acquired by the communication means includes a moving image file downloaded from a content distribution server and a moving image transmitted from a videophone call destination. Huai Nole is included.
  • still another mode of the portable communication device of the present invention includes: storing the moving image file acquired by the library power moving image file acquiring unit in the storage unit; and setting the moving image file recorded in the storage unit to This executes the reproduction control processing.
  • the library converts a moving image file acquired by the moving unit into a format of the downloaded moving surface file and records the format in the storage unit. Is what you do.
  • Still another embodiment of the portable communication device according to the present invention is configured such that the library power 03 06329
  • a moving image file acquired by the image photographing means is converted into a format of a moving image file described from a destination of the videophone and is recorded in the storage means.
  • the moving image file obtained by the moving image file obtaining unit is configured by data to which a time stamp can be added. It has information processing means having a function of decoding the data of the moving image file according to the time stamp and a function of decoding the data ignoring the time stamp.
  • FIG. 1 is a block diagram schematically showing a hardware configuration of a mobile communication device according to Embodiments 1 to 5 of the present invention.
  • FIG. 2 is a block diagram showing a software configuration of the mobile communication device according to Embodiment 1 of the present invention.
  • FIG. 3 is a diagram showing a flow of request and data in a reproduction process of a moving image file by download by the mobile communication device according to the first embodiment of the present invention
  • FIG. 4 shows a flow according to the first embodiment of the present invention.
  • FIG. 3 is a diagram showing a flow of a request and data in a reproduction process of a video file by a videophone by a mobile communication device;
  • FIG. 5 is a block diagram showing a software configuration of the mobile communication device according to Embodiment 2 of the present invention.
  • FIG. 6 is a diagram showing a flow of a request and data in a moving image file recording process by download by the portable communication device according to the second embodiment of the present invention.
  • FIG. 7 is a diagram showing a second embodiment of the present invention.
  • FIG. 5 is a diagram showing a flow of a request and data in a recording process of a video file by a videophone by the portable communication device according to
  • FIG. 8 is a diagram showing a flow of a request and data in a recording process of a moving image file by camera shooting by the mobile communication device according to Embodiment 2 of the present invention.
  • FIG. 9 is a diagram showing a request and data flow in a moving image file reproduction process by the mobile communication device according to Embodiment 2 of the present invention.
  • FIG. 10 is a diagram illustrating camera photographing by the portable communication device according to Embodiments 3 and 4 of the present invention.
  • FIG. 11 is a diagram showing a flow of a request and data in a data conversion / storage process.
  • FIG. 11 shows audio data when a downloaded moving image file is reproduced by the portable communication device according to the fifth embodiment of the present invention.
  • FIG. 5 is a diagram showing a sequence for synchronizing the video data with the video data;
  • FIG. 12 is a diagram showing a sequence when an error occurs when playing a moving image file while synchronizing audio data and video data with the portable communication device according to Embodiment 5 of the present invention.
  • FIG. 13 is a diagram showing a sequence for reproducing a moving image file including only video data by the portable communication device according to Embodiment 5 of the present invention.
  • FIG. 14 is a diagram illustrating a playback method when the downloaded moving image file is played back frame by frame by the mobile communication device according to the sixth embodiment of the present invention.
  • FIG. 15 is a diagram illustrating the playback method according to the sixth embodiment. This figure shows how to capture the frame-by-frame video data as a still image when the mobile communication device is playing back the downloaded moving image file by frame.
  • FIG. 1 is a block diagram schematically showing a hardware configuration of a mobile communication device according to Embodiments 1 to 5 of the present invention.
  • the mobile communication device according to the first to fifth embodiments is, for example, a mobile phone device or a mobile information terminal having a function of playing a downloaded moving image file, a videophone (video conference) function, a camera function, and the like. Device.
  • the mobile communication device includes a communication device 1 that transmits and receives a plurality of types of data through a wireless or wired communication line.
  • Video files received by the communication device include video phone video files (ITU-TH.324, H.324ZM, or 3GPP) that multiplex I ⁇ data and audio data.
  • Video files downloaded from the content distribution server (for example, ASF (Advanced Streaming Format) format and MP4 format (image compression Method MP EG 4 I and audio compression method ⁇ 3 (MPEG-1 audio layer 3) ", and file formats by QCELP (Qualcomm Code Exited Linear Predictive coding)))).
  • ASF Advanced Streaming Format
  • MP4 image compression Method MP EG 4 I and audio compression method ⁇ 3 (MPEG-1 audio layer 3) "
  • QCELP Quadratured Linear Predictive coding
  • the mobile communication devices according to Embodiments 1 to 5 are a video information processing device ( ⁇ coding / decoding device) 2 for encoding / decoding video data.
  • An audio information processing device (audio encoding / decoding device) 3 for encoding and decoding audio data.
  • the video information processing device 2 and the audio information processing device 3 have a function of decoding the moving image file according to the time stamp in the compressed data. And a function for ignoring the time stamp and decoding immediately after data reception. Therefore, data of different formats can be decoded by a common decoder.
  • the mobile communication devices include a display device 4 for displaying » a speaker device 5 for outputting sound, a video input device 6 for generating a video signal by photographing with a camera, and an audio device. And a microphone device 7 for generating a signal.
  • the mobile communication device includes a storage device (memory) 8 and a CPU (central processing unit) 9. Note that a plurality of storage devices 8 may be provided and used separately for storing programs and for storing moving image files.
  • the CPU 9 controls the operations of the components 1 to 8 by using a software group installed in the storage device 8 and a real-time operating system (real-time OS).
  • Embodiment 1 Embodiment 1
  • FIG. 2 is a block diagram showing a software configuration of the mobile communication device according to Embodiment 1 of the present invention.
  • the arrows in FIG. 2 indicate the transfer of data between the software of the mobile communication device.
  • the software group installed in the storage device 8 includes an application layer 10 having software for providing a user interface (ui), a library layer 20 having software for performing data processing, A driver layer 30 having software for controlling devices (including the above configurations 1 to 8), and a resource layer for controlling software included in each of the layers 10, 20, 30. It can be classified as OS40.
  • the application layer 10 includes a video conference application (Video Conference Application) 11 used when executing a videophone call, and a movie used to play video files stored in the storage device 8.
  • a video conference application Video Conference Application
  • a movie used to play video files stored in the storage device 8.
  • Video conference library videophone library: Video
  • Conference Library 21 and a recording / playback library with video file recording / playback function (Video Record / Play Library) 22 via a network (for example, from a content distribution server on the network) Multimedia Service Library 23, which separates downloaded video file data into video data and audio data, is included.
  • the driver layer 30 includes software for controlling the hardware ⁇ , a camera / video encoder / driver (Camera V-Encoder Driver) 31 and a multi-separation video decoder 'driver (Hide / DEMUX V—Decoder Driver) 32, Audio Driver 33, File System * Driver
  • the recording / reproduction library 22 in the first embodiment determines whether or not the input moving image file is in a format that can be processed by the demultiplexing video decoder / driver 32.
  • the moving image file input to the demultiplexing video decoder 'Dryno 32' is a moving image file downloaded through the communication device 1, a moving image file downloaded through the communication device 1 and stored in the storage device 8, This includes a moving image file obtained through the communication device 1 by the videophone function and a moving image file obtained through the communication device 1 by the videophone function and stored in the storage device 8.
  • the moving image file input to the demultiplexing video decoder / driver 32 may be another type of moving image file as long as it is a moving image file containing at least video data having a common format.
  • the recording / playback library 22 determines that the obtained moving image file is in a format that can be processed by the demultiplexing video decoder 'driver 32', the recording / playback library 22 transmits the obtained moving image file to the demultiplexing video decoder 'driver 32. provide. Also, if it is determined that the obtained video file is not in a format that can be processed by the demultiplexing video decoder driver 32, the recording / playback library 22 will send the video file to the multimedia service library 23.
  • the data included in the moving image file is sent to the demultiplexing video decoder driver 32 by demultiplexing.
  • the demultiplexing video decoder driver 32 by demultiplexing.
  • the recording / reproducing library 22 controls the file system driver 34 to store the moving image file acquired by the communication device 1 in the storage device 8, and stores the moving image file recorded in the storage device 8. Also, a reproduction control process for reproducing is executed. Details of the accumulation process will be described in a second embodiment described later.
  • FIG. 3 is a diagram showing a flow of request and data in a reproduction process of a downloaded video file by the mobile communication device according to the first embodiment of the present invention.
  • a description will be given of a process of reproducing the downloaded moving image file by the mobile communication device according to the first embodiment.
  • the user When playing a downloaded video file, first, the user operates the movie (viewer), which is an application that provides a user interface for video playback, through a user operation (the operation unit is not shown).
  • the FINO HI selection command and the playback request 50a are issued to the recording / playback library 22 as a common playback control library.
  • the recording / playback library 22 determines the format (standard) of the data of the video file 51a to be played back, and determines the format of the video file downloaded from the network. Poor> That is, it is determined whether or not it is necessary to separate the data making up the video file into video data and audio data.
  • the video file to be played 5 1 a is the video file
  • the multiplexed data 52 constituting the moving image file 51a is transmitted to the multimedia service 'library 23', and a separation request is made.
  • the multimedia service library 23 returns the separated data 53 obtained by separating the multiplexed data 52 into «data and audio data» to the recording / reproducing library 22.
  • the recording / reproducing library 2 2 passes the video data 56 of the separated data 53 to a demultiplexing video decoder, which is a driver for controlling hardware for video reproduction.
  • a demultiplexing video decoder which is a driver for controlling hardware for video reproduction.
  • the audio driver 33 which is a driver for controlling the hardware that reproduces audio
  • the video file is played (S
  • the audio driver 33 returns the size 55 of the reproduced audio data 54 to the recording / playback library 22.
  • the playback time of the video data and the audio data is synchronized by calculating the elapsed time and passing the data 56 to the demultiplexing video decoder / driver 32 in synchronization with the elapsed time.
  • a process of storing a moving image file by the mobile communication device according to the first embodiment will be described with reference to FIGS.
  • the user operates the video conference application 11 to provide a user interface for the videophone.
  • a recording request is issued to a video conference library 21 which is a library for providing a videophone function.
  • the video conference 'library 21 receiving the recording request issues a recording request to the recording / playback library 22 which is a library for performing moving picture recording / playback control.
  • the recording / playback library 22 issues a recording request to the demultiplexer video decoder 'driver 32, which controls the hardware that exchanges video files during a videophone call, and demultiplexes the received video file into a demultiplexer video decoder driver 32. And stores it in the storage device 8 (or another storage device not shown).
  • FIG. 4 is a diagram showing a flow of request and data in a reproduction process of a moving image file stored in a videophone by the portable communication device according to Embodiment 1 of the present invention.
  • FIGS. 1, 2, and 4 a description will be given of a process of reproducing a moving image file recorded during a videophone call by the mobile communication device according to the first embodiment.
  • the user When playing back a video file recorded during a videophone call, first, the user operates the movie file, which is an application that provides a user interface for playing back the stored video file, through the movie's view application.
  • a video file playback request 50b is issued to the recording / playback library 22 via the movie / view library 21.
  • the recording / playback library 22 is a movie file in which the data of the movie file 51b to be played back was recorded during a videophone call, and is data that does not need to be synchronized with the playback timing of video data and audio data. Judge that there is. In this case, the recording / reproducing library 22 passes the multiplexed data 57 of the moving image file 51 b to the demultiplexing video decoder / driver 32 to realize the moving image reproduction. Synchronization of the playback timing of video data and audio data of 5 lb of video file recorded on the own terminal is performed in the multi-separation video decoder 'driver 32, and audio data 58 is used as needed by the audio driver. 3 Passed to 3.
  • the playback of two types of video files having different formats is performed using a common playback function library. It can be realized using a certain recording / reproducing library 22, a demultiplexer video decoder / dryno 32, which is a common driver, and common hardware.
  • the recording / reproducing library 22 which is a common reproducing function library for a plurality of types of video files (for example, the video files 51a and 51b) is used.
  • the portable communication device according to Embodiment 1 is a standard for current or future portable communication devices. Focusing on the fact that the video data of multiple types of video files are s «data composed of a common format, a conventional method that has a playback function library for each of multiple types of video files is adopted. I haven't.
  • the playback control process is executed by using a recording / playback library 22 which is a common playback function library capable of processing data common to a plurality of types of video files. are doing.
  • a plurality of types of moving image files can be reproduced by the common recording / reproducing library 22 through a process called separation.
  • the overall size of the installed program (software group) can be reduced. Therefore, even if the storage capacity of the storage device is small, and the storage area of the program is limited, even a portable communication device can realize multifunctionality that can handle many types of moving image files.
  • the portable communication device has a function of reproducing a downloaded moving image file and a function of recording and reproducing a moving image file in a videophone call has been described.
  • the portable communication device according to the above may have other functions.
  • FIG. 5 is a block diagram showing a software configuration of the portable communication device according to Embodiment 2 (or Embodiments 3 and 4) of the present invention. Note that arrows in FIG. 5 indicate data transfer between the software of the portable communication device.
  • the software group installed in the storage device 8 in the second embodiment includes an application layer 10, a library layer 20, a driver layer 30, and a real-time OS 40. Can be classified as
  • the application layer 10 includes a video 'conference application 11 used when executing a videophone call, a movie used to play a video file stored in the storage device 8, a view application 12 and a network.
  • video is captured with a web browser application (Web Browser Application) 13 and a user interface 6 for network access, and a video input device 6 Camera application (Camera Application) 14 used when performing the operation.
  • Web Browser Application Web Browser Application
  • Camera application Camera application
  • the library layer 20 includes a video conference library 21 for performing a videophone sequence control when a videophone is executed, a recording / playback library 22 having a video file recording / playback function, and a network (for example, a network). (From the above content distribution server) Download the video file data! ⁇ Multimedia service that separates data and voice data 'Library 23 and Power S included.
  • the driver layer 30 includes software for controlling the hardware ⁇ , such as a camera / video encoder 'driver 31, a demultiplexer video decoder' driver 32, an audio driver 33, and a finale system. 'Drivers 3 and 4 are included.
  • the recording / reproducing library 22 in the second embodiment determines whether or not the input moving image file is in a format that can be processed by the demultiplexing video decoder / driver 32.
  • a moving image file input to the demultiplexing video decoder 'Dryno 32' is a moving image file downloaded through the communication device 1, and a moving image file downloaded through the communication device 1 and stored in the storage device 8.
  • the input moving image file may be another type of moving image file as long as the moving image file includes at least video data having a common format.
  • the recording / playback library 22 determines that the input video file is in a format that can be processed by the demultiplexer video decoder * driver 32, the obtained video file is transmitted to the demultiplexer video decoder 'driver 32. provide.
  • the recording / playback library 22 determines that the input video file is not in a format that can be processed by the demultiplexing video decoder 'driver 32, it sends the video file to the multimedia service library 23, By demultiplexing, the video data included in the moving image file is sent to the demultiplexing video decoder 'driver 32.
  • the recording / reproducing library 22 controls the file system driver 34 to record the moving image file acquired by the communication device 1 in the storage device 8, and stores the moving image file stored in the storage device 8. Also, a reproduction control process for reproducing is executed.
  • FIG. 6 is a diagram showing a flow of request and data in a process of accumulating a downloaded moving image file by the mobile communication device according to Embodiment 2 of the present invention. The operation of the mobile communication device according to the second embodiment will be described with reference to FIG. 1, FIG. 5, and FIG.
  • the web browser app When storing video files downloaded from a server on the network via a communication line, the web browser app, which is an application that provides a user interface for network access, by user operation Record and play the video file download request 6 1 through the location 13 Issued to Library 2 2
  • the recording / playback library 2 2 is a demultiplexing video decoder that controls the hardware that sends and receives video files 6 3 during network access.
  • the recording request 6 2 is issued to the driver 3 2, and the received video files 6 3
  • the corresponding multiplexed data 64 is received from the demultiplexer video decoder / driver 32, and the multiplexed data 65 corresponding to the multiplexed data 64 is a driver for controlling the file system.
  • the data is stored in the storage device 8 via the storage device. At the time of storage, identification information indicating that the data is downloaded data is added to the video file data.
  • FIG. 7 is a diagram showing a flow of request and data in a videophone video file storage process performed by the mobile communication device according to Embodiment 2 of the present invention.
  • the videoconferencing application 11 which is an application that provides a user interface for the videophone, is operated by the user.
  • the recording request 71 is issued to the video conference library 21 that provides a videophone function.
  • the video conference receiving the recording request 71.
  • the library 21 controls the video recording and playback.
  • the recording and playback library 22 is a demultiplexing video decoder driver which controls the hardware for exchanging video files during a videophone call 3 2 Issue a recording request 73 to the multiplexed data 75 corresponding to the received video file 74.
  • Decoder / Dryno 32 Receives the multiplexed data 76 corresponding to the multiplexed data 75 to the storage device 8 via the file system / dryer 34 which controls the file system. At the time of storage, identification information is added to the video file data to indicate that it is recorded data during a videophone call.
  • FIG. 8 is a diagram showing a flow of request and data in an accumulation process of camera photographing data by the mobile communication device according to Embodiment 2 of the present invention.
  • Figure 1, Figure 5, and Figure 8 The operation of the mobile communication device according to the second embodiment will be described based on FIG.
  • a camera application 1 that provides a user interface for photographing the camera by user operation 4
  • a request for recording a captured image 81 is issued to the recording / reproducing library 22.
  • the recording / playback library 22 issues a recording request 81 to a demultiplexing video decoder 'driver 32 that controls hardware for synthesizing video data and audio data during camera shooting.
  • Demultiplexing video decoder ⁇ Driver 32 records and reproduces multiplexed data 85 composed of video data 84 from camera video encoder driver 31 and audio data 83 from audio driver 33 Library 22
  • the recording / reproducing library 22 stores the multiplexed data 86 corresponding to the multiplexed data 85 in the storage device 8 via the file system driver 34 which is a driver for controlling the file system. .
  • identification information indicating that the data is video recording data captured by a camera is added to the video file data.
  • FIG. 9 is a diagram showing a flow of request and data in a reproduction process of a stored moving image file by the portable communication device according to Embodiment 2 of the present invention.
  • the operation of the mobile communication device according to the second embodiment will be described based on FIG. 1, FIG. 5, and FIG.
  • the movie, view, and application 12 issues a file selection and playback request 50 by user operation to the recording and playback library 22.
  • the recording / playback library 22 determines the data of the video file to be played back, and determines the power of the downloaded video file, that is, the multiplexed data constituting the video file as data. It is determined whether or not the audio data needs to be separated. If the video file 51 to be played is a video file obtained by downloading, the multiplexed data 52 constituting the video file 51 is transferred to the multimedia service library 23.
  • the multimedia 'service' library 23 separates the multiplexed data 52 into «data and audio data, and returns the separated data 53 to the recording / reproducing library 22.
  • the recording / playback library 22 passes ⁇ 3 ⁇ 4 data 56 to a demultiplexing video decoder / driver 32, which is a driver for controlling hardware for video playback, and also converts the audio data 54 into audio data.
  • the audio driver 33 which is a driver for controlling the hardware that performs playback, the playback of video files is realized.
  • the audio driver returns the size 55 of the reproduced audio data to the recording / playback library 22.
  • the recording / playback library 22 shows the elapsed time played from the size 55. Then, by synchronizing with the elapsed time and passing the video data 56 to the demultiplexing video decoder / driver 32, the reproduction of the video data and the audio data is synchronized.
  • the user When playing a video file recorded during a videophone call, first, the user operates the movie “View ⁇ application 12, which is an application that provides a user interface for playing the stored video file. , A playback request 50 of the stored moving image file is issued to the recording and playback library 22.
  • the recording / playback library 22 is a video file recorded in a videophone when the data of the video file 51 to be played back is a video file that is not required to be synchronized with the playback timing of the data and audio data. to decide. In this case, the recording / playback library 22 transfers the multiplexed data 57 of the moving image file 51 to the multiplex separation video decoder Dryno 32 to realize the moving image reproduction.
  • Synchronization of the playback timing of video data and audio data of 5 lb of video files recorded on the terminal is performed within the multiplexed video decoder / driver 32, and audio data 58 is converted as necessary. Dio * Dryno 3 passed to 3
  • a user application In order to play back a movie file acquired and captured by camera image capture by the elephant input device 6, first, a user application operates a user interface for playing a user interface for playing the stored movie file. ⁇ A request 50 to play back the stored video file is issued to the recording / playback library 22 through the "beview application 12".
  • the recording / playback library 22 is a movie file in which the data of the movie file 51 as playback ⁇ is stored by the camera. For example, «data that does not need to synchronize the playback timing of the data with the audio data Judge. This; ⁇ First, the recording / playback library 22 passes the multiplexed data 57 of the moving picture file 51 to the demultiplexing video decoder * driver 32 to realize the moving picture reproduction. Synchronization of the playback timing of video data and audio data of the video file 51b recorded by the terminal is performed within the demultiplexer video decoder driver 32, and the audio data 58 is converted to the audio driver as necessary. 3 Passed to 3.
  • a plurality of types of moving image files uses the recording / playback library 22 which is a common playback function library. That is, in the mobile communication device according to the second embodiment, video data of a plurality of types of moving image files that are standardized for the current or future mobile communication device are configured in a common format. Focusing on the fact that it is data, it does not adopt the conventional method that has a playback function library for each of multiple types of video files. Instead, in the mobile communication device according to the second embodiment, the playback control process is performed using the recording / playback library 22 which is a common playback function library capable of processing video data common to a plurality of types of video files. are doing.
  • a plurality of types of moving image files can be played back by the common recording / playback library 22 through a process called separation. Even if the mobile communication device is to be multi-functional by increasing the types of video files that can be handled by, it is installed compared to the conventional technology that has a playback function library for each of multiple types of video files. The size of the entire program (software group) can be reduced. Because of this, the capacity of the program is Even a mobile communication device with a limited storage area can realize multifunctionality that can handle many types of moving image files.
  • the mobile communication device uses a downloaded moving image file, a moving image file recorded during a videophone call, and a moving image file stored by camera shooting.
  • the mobile communication device according to the second embodiment may be configured to use another moving image file.
  • the data is separated and passed to the recording / playback library 22, and the video file recorded during the videophone call and the video stored by the camera are stored.
  • the file the case where the data is passed to the recording / reproducing library 22 without being separated has been described.
  • the processing method of the moving image file is also different. For example, for downloaded video files and video files stored by camera shooting, the data is separated before being passed to the recording / playback library 22, and for video files recorded during a videophone call, the data is not separated. If the format of the moving image file is different, as in the case of passing it to the recording / playback library 22, a different processing method is adopted. Embodiment 3.
  • FIG. 10 is a diagram showing a flow of a request and data in conversion / accumulation processing of camera photographing data by the portable communication device according to the third and fourth embodiments of the present invention.
  • the hardware configuration of the mobile communication device according to the third embodiment is the same as the configuration in FIG. 1, and the software configuration of the mobile communication device according to the third embodiment is the same as the configuration in FIG.
  • the mobile communication device according to the third embodiment converts a moving image captured by the video input device 6 of its own terminal into a moving image format used for television telephone communication and stores the converted moving image format.
  • the operation of the mobile communication device according to the third embodiment will be described based on FIGS. 1, 5, and 10.
  • the camera's application 14 requests the recording of the captured image 7 1 by the user's operation, and the recording / playback library 2 Issued for 2.
  • the recording / playback library 22 is a hardware that combines data and audio data during camera shooting. Demultiplexing video decoder that controls air. Issues recording request 72 to Dryno 32.
  • the demultiplexer video decoder driver 32 was encoded by the camera 'video encoder' driver 31! ⁇ Receiving data 74 and encoded voice data 73 from audio driver 33.
  • the demultiplexing video decoder / driver 32 passes the video data 74 and the audio data 73 to the recording / reproducing library 22 as data 75 which is kept separated.
  • the recording / playback library 2 2 passes the received video data Z audio data 7 6 to the multimedia service library 4, and the multimedia 'service library 2 3 converts it to the video format used for videophone communication. Do.
  • the recording / playback library 22 receives the video file 77 composed of the format-converted data from the multimedia service library 23 and stores the data in the file system via the file system driver 34. I do. At the time of storage, identification information indicating that the data is recording data being captured by the camera is added to the moving image file.
  • the moving image file acquired by the camera shooting is converted into the format of the moving image file referred to by the call destination of the videophone, and is stored in the storage device 8.
  • a moving image file shot by a terminal can be transmitted quickly and easily to a partner terminal.
  • the hardware configuration of the mobile communication device according to the fourth embodiment is the same as the configuration in FIG. 1, and the software configuration of the mobile communication device according to the fourth embodiment is the same as the configuration shown in FIG.
  • the mobile communication device according to the fourth embodiment converts a moving image file obtained by shooting with a camera by the image device 6 of the terminal into the same format as the downloaded moving image file, and stores the converted file in the storage device 8.
  • the camera photographing operation by the mobile communication device according to the fourth embodiment will be described based on FIGS. 1, 5, and 10.
  • FIG. In order to capture a video file captured by the camera using the »input device 6 of the terminal and store the captured video file, a request to record the captured image 7 1 is sent to the recording / playback library 22 2 by user operation using the camera application 14. Issued to The recording / reproducing library 22 issues a recording request 72 to a demultiplexing video decoder / dryno 32 that controls hard-air that synthesizes audio data and audio data during camera shooting.
  • the demultiplexing video decoder 'driver 32 receives video data 74 encoded from the camera / video encoder' driver 31 and audio data 73 encoded from the audio 'driver 33.
  • the demultiplexing video decoder 'driver 32 transfers the video data 74 and the audio data 73 to the recording / reproducing library 22 as data 75 with the data separated.
  • the recording / playback library 22 passes the received video data / audio data 76 to the multimedia service library 23, and the multimedia service library 23 places it in the same format as the downloaded video file. Perform the conversion.
  • the recording / reproducing library 22 receives the video file 77 composed of the format-converted data from the manole media service library 23, and accumulates the data in the file system via the file system dryino 34. Do. In addition, at the time of storage, identification information indicating that the data is recording data being captured by a camera is applied to the video file.
  • the moving image file obtained by the camera shooting is converted into the same format as the downloaded moving image file and stored in the storage device 8. Can be quickly and easily installed on the network.
  • Embodiment 4 is the same as Embodiment 2 described above.
  • Embodiment 5 is the same as Embodiment 2 described above.
  • FIG. 11 shows synchronization between audio data and S «data when a downloaded moving image file is reproduced by the portable communication device according to Embodiment 5 of the present invention.
  • FIG. 7 is a diagram showing a sequence for the second embodiment.
  • the hardware configuration of the mobile communication device according to the fifth embodiment is the same as that of FIG. 1, and the software configuration of the mobile communication device according to the fifth embodiment is the same as that of FIG.
  • the portable communication device according to the fifth embodiment performs reproduction by synchronizing audio data and other data when reproducing a downloaded moving image file.
  • the operation of the mobile communication device according to the fifth embodiment will be described based on FIG. 2, FIG. 3, and FIG.
  • the user when playing the downloaded video file, the user operates the application “Movie View which provides a user interface for video playback”.
  • a moving image file selection command and a reproduction request 50 a are issued to the recording / reproduction library 22 as a common reproduction control library.
  • the recording / playback library 2 2 multiplexes the video file 51a.
  • Data 52 is converted to Manolechi Media * Service 'Library 23 and a separation request is made.
  • the Manolechimedia service library 23 separates the multiplexed data 52 into «data and audio data, and returns the separated data 53 to the recording / playback library 22.
  • the recording / reproducing library 22 creates a time table 22 5 for synchronizing audio data and video data from the separated data 53.
  • the time tape information 225 describes the cumulative processing size of audio data and the cumulative processing size of video data at a certain time.
  • the recording / playback library 22 passes the video data 56 for one frame to the demultiplexing video decoder 'driver 32, which is a driver for controlling hardware for performing playback.
  • the audio data 54 is passed to an audio driver 33 which is a driver for controlling hardware for performing audio reproduction.
  • the internal timer 221 in case no notification from the audio driver 33 occurs due to an error.
  • the interval between the occurrence of an event of the internal timer 221 is set to the same as that of the notification from the audio driver 33].
  • the audio 'driver 33 returns the accumulated size (ie, audio data size) 55 of the processed audio data to the recording / playback library 22 at regular time intervals IT.
  • the recording / playback library 22 calculates the current time from the accumulated size 55 of the processed audio data by using the time table 222. Further, the recording / reproducing library 22 refers to the time table 2 25 to determine at time B whether or not the accumulated size of the processed data has reached one frame of the video. At time B, the cumulative size 55 5 of the processed audio data does not reach the video data for one frame, so the recording / playback library 22 passes the video data to the demultiplexer video decoder 'driver 32. I will not do it.
  • the recording / playback library 22 refers to the time table 2 25 in the same manner as at time B, and the cumulative size of the processed elephant data is one frame. Determine if the minute has been reached. At time C, the accumulated size of the processed video data has reached one frame, so the recording and playback library 22 passes the video data 56 of that frame size to the demultiplexing video decoder , The video data is displayed.
  • the cumulative size of the audio data 55 (for example, the cumulative size of the audio data processed from time A to time D) is passed to the audio driver 33.
  • the recording / playback library 22 Before reaching the size of the audio data 54 (for example, at time A, the audio data passed from the recording / playback library 22 to the audio driver 33), the recording / playback library 22 returns the audio data 54 again. Pass it to the audio driver 33 (for example, in B Temple D) so that the audio data to be processed by the audio driver 43 does not expire.
  • the recording / playback library 22 refers to the time table 225 in the same manner as the time C, and the cumulative size of the data becomes If the number of frames that has been played back at the time reaches + (data of one frame), the recording and playback library The data 56 is passed to the demultiplexing video decoder Dryno 33, and the data is displayed.
  • the recording / reproducing library 22 receives the amount of audio data processing from the audio / drink 33 and reproduces the video in accordance with the audio processing. Therefore, the audio can be synchronized with the audio without interruption.
  • the audio driver 33 transmits the audio data from time B to time C so that the reproduced sound is not interrupted. Play the audio data to be played between time A and time B.
  • the accumulated data size returned from the audio driver 33 to the recording / playback library 22 at time B is the value originally returned at time C.
  • the recording / playback library 22 uses the time table 25 to determine the current time from the accumulated data size of the audio data.As a result, it judges that it is time C, and demultiplexes the video data 56.
  • Video decoder 'Dryoku' 32 passes the video data. For this reason, in the audio / video synchronization method using only the internal timer 221, even in the case of illegal content that lacks audio data such that synchronization is lost in the middle, audio data and data are not interrupted at all times. Can be synchronized.
  • FIG. 12 is a diagram showing a sequence in which an error has occurred when playing a moving image file while synchronizing audio data and data with the portable communication device according to the fifth embodiment.
  • the portable communication device according to the fifth embodiment is described with reference to FIGS. 6329
  • the video playback / selection command and the playback request 50a are shared by the user through the movie-view-application 12 through the playback control. Issued to the recording / playback library 22 as a library.
  • the recording / reproducing library 22 sends the multiplexed data 52 constituting the moving image file 51a to the Manore media service library 23 and sends a separation request.
  • the multimedia 'service' library 23 separates the multiplexed data 52 into video data and audio data, and returns the separated data 53 to the recording / playback library 22.
  • the recording / reproducing library 22 creates a time table 22 5 for synchronizing audio data and video data from the separated data 53.
  • this time table 225 the cumulative processing size of audio data at a certain time and the cumulative processing size of data are described.
  • the recording / playback library 22 passes one frame of video data 56 to the demultiplexing video decoder 'driver 32, which is a driver for controlling hardware for playing back video.
  • the audio data 54 is passed to an audio driver 33 which is a driver for controlling hardware for performing audio reproduction.
  • set the internal timer 221 in case no notification from the audio driver occurs due to an error.
  • the interval between the occurrence of events of the internal timer 222 is set to the same as the interval of the notification generated from the audio driver 33.
  • the audio data is returned to the recording and playback library 22 at regular intervals] T at regular intervals] T.
  • the library 22 can determine whether the cumulative size of the processed video data has reached one frame of the video. At time ⁇ , it was processed! ⁇ Since the cumulative size of the data does not reach the data for one frame, The recording / reproducing library 22 does not pass the data to the demultiplexing video decoder 'driver 32.
  • the recording / reproducing library 22 can determine whether the cumulative size of the processed video data has reached one frame of the moving image.
  • the recording / playback library 22 converts the one frame of video data 56 into a demultiplexed video decoder 'driver. 3 can be passed to 2.
  • the recording / reproducing library 22 can determine the processing status of the video data and the audio data.
  • the notification of the audio data processing amount (that is, the audio data size) 55 from the audio driver 33 is recorded for some reason. Even if the playback library 22 is not reached, the playback timing of the audio data and the video data can be set by the event 2 23 of the internal timer 2 21 set in advance. Therefore, the video can be played back while synchronizing the audio with! ⁇ .
  • FIG. 13 is a diagram showing a sequence in which the mobile communication device according to the fifth embodiment reproduces a moving image file composed of only data.
  • the playback operation of a moving image file composed only of video data of the mobile communication device according to the fifth embodiment will be described with reference to FIGS.
  • the movie file selection command and the playback request 50a are shared through the movie.view.application 12. It is issued to the recording / reproducing library 22 as a general reproducing control library. As shown in FIG. 2 or FIG. 3, the recording / reproducing library 22 sends the multiplexed data 52 constituting the moving image file 51a to the Manolechi media service library 23 and issues a separation request.
  • the multimedia service library 23 separates the multiplexed data 52 into video data and audio data, and returns the separated data 53 to the recording / playback library 22.
  • the moving image playback mode shown in FIG. 13 since the moving image file is composed of only video data, no audio data exists.
  • the recording / reproducing library 22 creates, from the separated data 53, a time tape information 22 for matching the reproduction timing of the audio data and the data.
  • the time table 2 25 describes only the cumulative processing size of the video data at a certain time.
  • the recording / playback library 22 passes one frame of video data 56 to the demultiplexing video decoder / driver 32, which is a driver for controlling the hardware that performs video playback.
  • the recording / reproducing library 22 does not pass the audio data to the audio driver 33, so that the audio 'driver does not return a notification at regular intervals ⁇ .
  • the internal timer 22 1 is set at a fixed interval IT.
  • the internal timer 222 notifies the recording / reproducing library 22 of the event 222 after the time IT (time ⁇ in FIG. 13).
  • the recording / reproducing library 22 can determine whether the cumulative size of the processed video data has reached one frame of the moving image.
  • the accumulated size of the processed 8 ⁇ data does not reach the data of one frame, so the recording / reproducing library 22 sends the video data to the demultiplexed video decoder. do not do.
  • the internal timer 222 notifies the recording / playback library 22 of the event 222 (time C in FIG. 13).
  • the recording / playback library 22 converts the data 56 of one frame into a demultiplexed video decoder and a driver 3. 2 can be passed.
  • the mobile communication device is created from the video data by the event 2 23 generated by the internal timer 2 21. Movies can be played back according to the timetable 2 25.
  • FIG. 14 is a diagram showing a reproducing method when the downloaded moving image file is frame-by-frame reproduced by the portable communication device according to Embodiment 6 of the present invention.
  • the hardware configuration of the mobile communication device according to the sixth embodiment is the same as the configuration in FIG. 1, and the software configuration of the mobile communication device according to the sixth embodiment is the same as the configuration in FIG.
  • the mobile communication device according to the sixth embodiment can play back the downloaded moving image file by frame, the operation of the mobile communication device according to the sixth embodiment will be described with reference to FIG.
  • the movie, view, and application 12 have a user interface for advancing frames, and a frame advance request 81 is sent to the recording and playback library 22 in accordance with the input.
  • the movie playback view 22 received a frame advance request 8 1 from the movie view application 12, and the recording / playback library 2 2, if not playing back at that time, is a multimedia * service library 2 3
  • the received demultiplexed data 83 passes the one-frame «data 86> to the demultiplexing video decoder driver. If the reproduction is being performed, the reproduction is stopped at that point, but the video data 86 displayed by the demultiplexing video decoder 'driver 32 is kept displayed as it is.
  • the recording / reproducing library 22 In response to the frame feed request 81 from the movie, the view II, and the application 12 transmitted continuously, the recording / reproducing library 22 passes the video data 86 of the next frame to the demultiplexing video decoder 'driver 32. In this manner, in the mobile communication device according to the sixth embodiment, video data can be displayed frame-by-frame in response to an input from a user.
  • FIG. 15 shows a method of capturing frame-by-frame I data as a still image when the mobile communication device according to Embodiment 6 is playing back a downloaded video file by frame-by-frame playback. .
  • Movie ⁇ View ⁇ ⁇ Application 1 2 is a user-in
  • a user interface for capturing still images is provided, and a capture request 91 is sent to the recording / reproducing library 22 according to the input.
  • Still image capture is performed during frame-by-frame playback.
  • Movie ⁇ View ⁇ ⁇ Application 1 2 In response to the frame advance request 8 1 notified, the recording / playback library 22 passes the video data 86 for one frame to the demultiplexing video decoder Is sent to the display memory 41 and displayed on the display device.
  • the end user watching the frame-by-frame playback display operates the capture user interface, and the capture request 91 from the movie's view application application 12 is sent to the recording / playback library 22.
  • the recording / reproducing library 22 captures the video data 96a currently displayed on the display device from the display memory 41 at that time.
  • the elephant data 96a is converted into a still image format suitable for storage, and the converted video data 96b is passed to the file system driver 34 and stored in the file system.
  • the portable communication device can record and save, as a still image, image data reproduced and played back by the end user by frame.
  • Embodiment 6 is the same as Embodiment 5 described above. Industrial applicability
  • the software group installed in the storage unit includes a library capable of processing video data commonly included in a plurality of types of moving image files.
  • This library has a function of determining the type of a video file and a playback control function. If the video file obtained by the video file obtaining unit is in a format that can be processed by the depth driver, it is obtained by the video file obtaining unit. When the video file obtained by the video file obtaining means is not in a format that can be processed by the decompile driver, the video file obtained by the video file obtaining means is separated from the video file obtained by the video file obtaining means, thereby obtaining the video file. Obtained by means The video data contained in the video file is provided to the device dryino. As described above, according to the present invention, since moving image files of different formats can be played back by the common library, multifunctionalization can be realized while minimizing an increase in the size of the entire program installed in the storage device. .
  • the present invention has a function of distinguishing moving image files of different formats by using a common library, a software configuration that uses a common user interface at the time of playing a moving image regardless of the type of the moving image file format is provided. This can improve the user's convenience.
  • the moving image previously stored on the terminal is quickly and easily uploaded to a server on the network. can do.
  • the video file obtained by the video shooting means is converted to the format of the video file sent from the destination of the videophone call and recorded in the storage means. It is possible to quickly and easily transmit a moving image captured by the terminal to the partner terminal.
  • the data of different formats can be shared by a common decoder.
  • a function of decoding the data of the moving image file obtained by the moving image file obtaining means in accordance with the time stamp and a function of ignoring the time stamp and decoding the data are provided, the data of different formats can be shared by a common decoder.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephonic Communication Services (AREA)
  • Television Signal Processing For Recording (AREA)
  • Telephone Function (AREA)

Abstract

L'invention concerne un dispositif de communication mobile qui traite de plusieurs types de fichiers d'images animées comportant des données vidéo d'un format courant. Un groupe logiciel installé comporte un pilote décodeur vidéo (32) pour afficher une vidéo sur la base du fichier d'images animées sur un afficheur (4) et une bibliothèque d'enregistrement/de reproduction (22). Plusieurs fichiers d'images animées sont fournies à la bibliothèque d'enregistrement/de reproduction (22). Si le fichier d'images animées est d'un format qui peut être traité par le pilote décodeur vidéo (32), ledit fichier est fourni à ce pilote décodeur vidéo (32). Dans le cas contraire, ledit fichier est séparé et les données vidéo qu'il contient sont fournies au pilote décodeur vidéo (32).
PCT/JP2003/006329 2002-05-24 2003-05-21 Dispositif de communication mobile WO2003101102A1 (fr)

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