JP2011176624A - Material reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a material reproducing device capable of automatically being adapted to each broadcast system and each device system frequency to reproduce a data file even if broadcast systems and device system frequencies of data files accumulated in a device are different from each other. <P>SOLUTION: A control part 80 displays thumbnail images of a plurality of materials accumulated in an accumulation part 20 on a display part 40. When one thumbnail image is selected via an operation receiving part 10, the control part 80 makes a reading part 30 read a format information related file related to the selected thumbnail image. A decoder 60 sets the broadcast system and the device system frequency on the basis of the format information related file from the reading part 30. Then, the control part 80 makes the reading part 30 read a video/sound/auxiliary data file of the selected thumbnail image to decode the data file by the decoder 60. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a material reproducing apparatus for reproducing material data recorded on a removable recording medium such as a flash memory.

  2. Description of the Related Art Conventionally, in a commercial material reproducing apparatus used in a broadcasting station or the like, a broadcasting method and an apparatus system frequency for reproducing an accumulated data file are set in advance. Here, the broadcast system indicates a broadcast system for reproducing HD (High Definition) video, a broadcast system for reproducing SD (Standard Definition) video, or the like. In this type of material playback device, in order to play back a data file of HD video or SD video, it is necessary to preset a broadcasting method and a device system frequency according to each data file. For this reason, the material reproduction apparatus can reproduce only the data file corresponding to the preset broadcasting method and apparatus system frequency. Further, when there is a data file in the storage unit that does not correspond to the set broadcasting system and device system frequency, the material playback device displays a display indicating that the data file cannot be played back on the display unit.

  In the above-described material reproduction apparatus, when data other than the set apparatus format is to be reproduced, the user operates the apparatus according to the menu from the operation panel on the front surface of the apparatus. Then, the user changes the broadcast method and the device system frequency to the broadcast method and the device system frequency corresponding to the data file desired to be reproduced. Thereby, the material reproduction apparatus can reproduce the data file desired by the user. Further, when the data file can be played back by changing the broadcasting system and the device system frequency, the material playback device cancels the display of the data file that cannot be played back on the display unit. Then, the material playback device displays the thumbnail image of the data file on the display unit. At this time, the material playback device displays that the data file that is not the playback target cannot be played back.

  A broadcasting system that automatically determines the format of the material to be played back (CODEC format) and plays back the material data using a decoder corresponding to the format has been proposed (for example, see Patent Document 1). However, in Patent Document 1, no specific proposal is made regarding a method of reproducing a data file by changing a broadcasting method and an apparatus system frequency.

JP 2008-78914 A

  As described above, in the conventional material reproduction apparatus, when the user desires to reproduce a data file that does not correspond to a preset broadcast method and apparatus system frequency, the broadcast method and apparatus system frequency corresponding to the data file are reproduced. Had to be reset manually, and it took time and effort.

  The present invention has been made under the circumstances described above, and its purpose is to automatically adjust the broadcasting format and device system frequency of the data file stored in the device even when the broadcasting method and device system frequency are different from each other. It is an object of the present invention to provide a material reproducing apparatus capable of reproducing a data file corresponding to the above.

  In order to achieve the above object, the material reproduction apparatus according to the present invention records at least actual data, thumbnail image data corresponding to the actual data, and material managed by format information related data associated with the thumbnail image data. An accumulating unit, a reading unit that reads out the actual data, the thumbnail image data, or the format information related data according to a reading control, a display unit that displays thumbnail image data from the reading unit, and an external reproduction When the operation receiving unit receives an operation and the operation receiving unit receives a reproduction operation for any specified thumbnail image data in the display unit, format information related data related to the specified thumbnail image data is stored in the reading unit. A first read control for reading, and the first read control A control unit for performing second read control for causing the read unit to read actual data corresponding to the designated thumbnail image data after the read control, and formatting the actual data from the read unit from the read unit. And a decoder for decoding by a decoding method based on information-related data.

  In the material reproducing apparatus having the above configuration, when the thumbnail image data displayed on the display unit is selected by the user, the decoding method of the decoder is set according to the format information related data related to the thumbnail image data. The actual data is decoded based on the set decoding method. Thereby, the material reproduction device can automatically set the broadcasting method and device system frequency of the device according to the material broadcasting method and device system frequency.

  According to the present invention, even when the broadcasting method and device system frequency of the data file stored in the device are different from each other, the data file is reproduced automatically corresponding to each broadcasting method and device system frequency. It is possible to provide a material reproduction apparatus that can perform the above-described operation.

It is a block diagram which shows the function structure of the raw material reproduction apparatus which concerns on one Embodiment of this invention. It is a schematic diagram which shows the raw material currently recorded on the storage part of FIG. It is a schematic diagram which shows the data structure in the thumbnail data file of FIG. 2 is a flowchart showing processing when the control unit of FIG. 1 reproduces a video / audio / auxiliary data file.

  Hereinafter, embodiments of a material reproduction apparatus according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a functional configuration of a material reproduction apparatus according to an embodiment of the present invention. 1 includes an operation receiving unit 10, a reading unit 30, a storage unit 20, a display unit 40, a synchronization signal generation unit 50, a decoder 60, an output method conversion unit 70, and a control unit 80. The storage unit 20, the reading unit 30, the display unit 40, the synchronization signal generation unit 50, the decoder 60, the output method conversion unit 70, and the control unit 80 are each connected to a bus. Further, the operation receiving unit 10 is connected to the control unit 80.

  The operation receiving unit 10 is installed on the panel surface of the material reproducing apparatus. The operation receiving unit 10 receives an operation from the user and notifies the control unit 80 of the operation information.

  The accumulation unit 20 records the material. At this time, the storage unit 20 is assumed to be a built-in recording medium built in the apparatus, a removable removable recording medium, an external recording medium connected to the outside of the apparatus, or the like. Here, a random accessible nonvolatile semiconductor memory such as a flash memory is used as the recording medium. A flash memory is a rewritable nonvolatile semiconductor memory, and has an advantage of high-speed random access. Unlike a tape or optical disk drive, a flash memory is excellent in vibration resistance and the like because it does not have a mechanical moving part. Although FIG. 1 shows an example in which only one material is stored in the storage unit 20, a plurality of materials may be stored in the storage unit 20.

  FIG. 2 is a schematic diagram showing materials recorded in the storage unit 20 of the material reproduction device according to the embodiment of the present invention. In the storage unit 20, the material is managed in association with video / audio / auxiliary (ANC) data files, thumbnail data files, proxy data files, playlist data files, metadata files, and the like.

  FIG. 3 is a schematic diagram showing a data structure in the thumbnail data file. The thumbnail data file includes a thumbnail image file of a video / audio / auxiliary data file and a format information related file associated with the thumbnail image file.

  The thumbnail image file is, for example, a bitmap file that represents a representative image of video / audio / auxiliary data with a small capacity image. For example, an image of the first frame of the video / audio / auxiliary data file is selected as the representative image.

  The format information related file is, for example, an XML file. The format information related file includes, for example, broadcasting method information, device system frequency information, audio bit number information, compression / decompression format information, and the like. Here, the broadcast system information is information related to a broadcast system for reproducing HD (High Definition) video or a broadcast system for reproducing SD (Standard Definition) video. Further, the device system frequency information refers to information regarding the frequency at which a data file is reproduced in each broadcasting system.

  The reading unit 30 reads a video / audio / auxiliary data file, a thumbnail image file, or a format information related file among the materials stored in the storage unit 20 in accordance with a read instruction from the control unit 80. The reading unit 30 outputs the video / audio / auxiliary data file to the decoder 60. Further, the reading unit 30 outputs the thumbnail image file to the display unit 40. Further, the reading unit 30 outputs the format information related file to the synchronization signal generation unit 50, the decoder 60 and the control unit 80.

  The display unit 40 is composed of, for example, an LCD (Liquid Crystal Display). The display unit 40 displays a thumbnail image based on the thumbnail image file from the reading unit 30. The user refers to the thumbnail image displayed on the display unit 40 and gives a reproduction operation to the operation receiving unit 10.

  The synchronization signal generation unit 50 generates a clock signal based on the device system frequency information in the format information related file from the reading unit 30. The synchronization signal generation unit 50 outputs this clock signal to the decoder 60 and the output method conversion unit 70.

  The decoder 60 sets the decoding method of the video / audio / auxiliary data file based on the format information related file from the reading unit 30.

  For example, when the video / audio / auxiliary data file is an HD video file according to the 1080i format, the decoder 60 sets the HD broadcast format according to the broadcast format information of the format information related file, and 59.59 according to the device system frequency information. 94 Hz, 50 Hz, or 24.97 Hz is set, 16 bits or 24 bits are set according to the audio bit number information, and the MPEG2 format is set according to the compression / decompression format information.

  Similarly, when the video / audio / auxiliary data file is an SD video file according to the NTSC (National Television System Committee) format, the decoder 60 sets the SD broadcast format according to the broadcast format information of the format information related file, 59.94 Hz is set according to the device system frequency information, 16 bits or 24 bits are set according to the audio bit number information, and the MPEG2 format is set according to the compression / decompression format information.

  Further, when the video / audio / auxiliary data file is an SD video file according to the PAL (Phase Alternation by Line) method, the decoder 60 sets the SD broadcast method according to the broadcast method information of the format information related file, and 50 Hz is set according to the system frequency information, 16 bits or 24 bits are set according to the audio bit number information, and the MPEG2 format is set according to the compression / decompression format information.

  Then, the decoder 60 decodes the video / audio / auxiliary data file from the reading unit 30 using the clock signal from the synchronization signal generating unit 50 by the set decoding method.

  The output method conversion unit 70 converts the image output method from the decoder 60 using the clock signal from the synchronization signal generation unit 50 in accordance with the conversion instruction from the control unit 80.

  For example, the output method conversion unit 70 converts the SD image from the decoder 60 into an HD image when the control unit 80 issues a conversion instruction to upconvert the SD image into an HD image. Further, when the conversion instruction for down-converting the HD image into the SD image is given from the control unit 80, the output method conversion unit 70 converts the HD image from the decoder 60 into the SD image. In addition, when a conversion instruction for cross-converting HD 1080i to HD 720p is given from the control unit 80, the output method conversion unit 70 converts the HD 1080i image from the decoder 60 into an HD 720p image. The cross-conversion method is not limited to this example.

  The converted image is output from an output unit (not shown) to an external display device.

  The control unit 80 controls the playback process of the material file in the material playback device in accordance with the playback operation from the operation receiving unit 10.

  Next, the operation in the above configuration will be described.

  FIG. 4 is a flowchart showing processing when the control unit 80 of the material reproduction apparatus according to the embodiment of the present invention reproduces a video / audio / auxiliary data file.

  First, the control unit 80 checks whether or not there is a material in the storage unit 20 (step S41). Here, a case where a plurality of materials exist in the storage unit 20 will be described. When the storage unit 20 recognizes a plurality of materials in the storage unit 20, the control unit 80 gives a reading instruction to the reading unit 30 so as to read the thumbnail image files of these materials (step S42).

  The reading unit 30 reads thumbnail image files of all materials and outputs them to the display unit 40. The display unit 40 displays thumbnail images based on these thumbnail image files.

  Subsequently, the control unit 80 determines whether any one of the plurality of thumbnail images has been selected (step S43). When any thumbnail image is selected (Yes in step S43), the control unit 80 instructs the reading unit 30 to read out the format information related file associated with the selected thumbnail image file. (Step S44).

  The reading unit 30 reads the format information related file according to the reading control. Then, the reading unit 30 outputs the format information related file to the synchronization signal generating unit 50, the decoder 60, and the control unit 80. The decoder 60 sets a decoding method based on the format information related file from the reading unit 30.

  Subsequently, the control unit 80 determines whether it is necessary to convert the output method of the image from the decoder 60 based on the format information related file from the reading unit 30 (S45). Here, the case where the output method needs to be converted is, for example, a case where the external display device does not support the newly set broadcasting method and device system frequency. When it is necessary to convert the output method in the determination of S44 (Yes in S45), the control unit 80 gives a conversion instruction for converting the image output method to the output method conversion unit 70 (S46).

  When the setting of the decoding method in the decoder 60 is completed, the control unit 80 gives a reading instruction to the reading unit 30 so as to read the video / audio / auxiliary data file (step S47). The video / audio / auxiliary data file read by the reading unit 30 is output to the decoder 60. The synchronization signal generation unit 50 generates a clock signal based on the device system frequency information in the format information related file from the reading unit 30. Then, the synchronization signal generation unit 50 outputs the clock signal to the decoder 60 and the output method conversion unit 70. The decoder 60 decodes the video / audio / auxiliary data file based on the newly set decoding method using the clock signal from the synchronization signal generating unit 50. The output method conversion unit 70 converts the image output method from the decoder 60 using the clock signal from the synchronization signal generation unit 50 in accordance with the conversion instruction from the control unit 80.

  In addition, when it is not necessary to convert the output method in the determination in S44 (No in S44), the control unit 80 proceeds to S46.

  As described above, in the above embodiment, when a thumbnail image of a material is selected by the user, the synchronization signal generation unit 50, the decoder 60, and the output method conversion are performed according to the format information related file related to the thumbnail image file of the material. The setting of the unit 70 is changed. Thereby, the material reproduction device can automatically set the broadcasting method and device system frequency to which the device itself corresponds according to the material broadcasting method and device system frequency. In addition, since the material reproduction apparatus can automatically set the broadcasting system and the apparatus system frequency, the display unit 40 is not marked with non-reproducible display, and all the contents stored in the storage unit 20 are not displayed. A thumbnail image of the material is displayed.

  Therefore, according to the material reproducing apparatus of the present invention, even if the broadcasting method and the device system frequency of the data file stored in the device are different from each other, it automatically corresponds to each broadcasting method and the device system frequency. Data file can be played.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 10 ... Operation receiving part 20 ... Accumulation part 30 ... Reading part 40 ... Display part 50 ... Synchronization signal generation part 60 ... Decoder 70 ... Output system conversion part 80 ... Control part

Claims (4)

An accumulation unit that records at least actual data, thumbnail image data corresponding to the actual data, and material managed by format information related data related to the thumbnail image data;
A reading unit that reads out the actual data, the thumbnail image data, or the format information related data according to a read control;
A display unit for displaying thumbnail image data from the reading unit;
An operation receiver for receiving an external playback operation;
A first reading control for causing the reading unit to read out format information related data related to the designated thumbnail image data when the operation receiving unit receives a reproduction operation for any of the designated thumbnail image data in the display unit; A control unit for performing a second read control for causing the read unit to read actual data corresponding to the designated thumbnail image data after the first read control;
A material reproduction apparatus comprising: a decoder that decodes actual data from the reading unit by a decoding method based on format information-related data from the reading unit. A synchronization signal generating unit that generates a synchronization signal used in the decoding process in the decoder based on the format information related data from the reading unit;
The material reproducing apparatus according to claim 1, wherein the decoder performs the decoding process based on the synchronization signal. Further comprising an output method conversion unit for converting the image output method from the decoder in accordance with a conversion instruction;
2. The material reproducing apparatus according to claim 1, wherein the control unit performs conversion control on the output method conversion unit based on format information related data from the reading unit. A synchronization signal generation unit that generates a synchronization signal used in the decoding process in the decoder and the conversion process in the output method conversion unit based on the format information related data from the reading unit;
The decoder performs the decoding process based on the synchronization signal,
4. The material reproducing apparatus according to claim 3, wherein the output method conversion unit performs the conversion process based on the synchronization signal.

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