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Video/audio output apparatus and video/audio output method

a video/audio and output method technology, applied in the field of video/audio output apparatus, video/audio output method, computer program and storage medium, can solve the problems of not enabling audio matching of output audio, unable to enable audio management of individual objects on each screen, and unable to enable audio management of individual objects

Inactive Publication Date: 2011-08-11
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables accurate audio management and matching of output audio with video configuration, preventing the output of hidden audio sources and ensuring compatibility between output image and audio data in a multi-screen video / audio output apparatus.

Problems solved by technology

However, this technology is only for controlling the sound volume of audio data corresponding to each screen, and does not enable audio management of individual objects on each screen.
In such a case, audio management of individual objects is not possible with technology using a conventional method.
Conventional technology thus does not enable output audio to be matched with the configuration of output video after a plurality of screens have been composed in a video / audio output apparatus that simultaneously outputs a plurality of screens.

Method used

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  • Video/audio output apparatus and video/audio output method
  • Video/audio output apparatus and video/audio output method
  • Video/audio output apparatus and video/audio output method

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first embodiment

[0030]Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0031]FIG. 6 is a block diagram showing a first embodiment of the present invention. As shown in FIG. 6, a video / audio output apparatus 700 outputs video data 730 and 732 of a plurality of input streams and audio data (normal audio data) 731 synchronized with the video data as a single video stream to a video output unit 740. The video / audio output apparatus 700 also composes and outputs audio data to an audio output unit 750.

[0032]In this example, the input audio is assumed to consist of normal audio data 731 to be synchronized with video data 730 (first video data) and 732 (second video data), and audio source differentiated audio data 733 in which the audio sources are separated for each object in the video data.

[0033]Firstly, the video data 730 and 732 are input to an image extraction unit 701. The image extraction unit 701 divides each frame of the vid...

second embodiment

[0048]FIG. 7 is a block diagram showing an exemplary configuration of a second embodiment of the present invention. Similar to the video / audio output apparatus 700 according to the first embodiment, video / audio output apparatus 800 according to this embodiment comprises an image extraction unit 801 (which inputs first video data 840 and second video data 842, and outputs partial image data 832), an audio source separation unit 802 (which inputs normal audio data 841, and outputs audio source differentiated data 833), a screen control unit 803, a screen selection unit 804, and a tile generation unit 805 (which inputs the partial image data 832, the audio source differentiated data 833, and audio source differentiated audio data 843). This configuration differs from the first embodiment shown in FIG. 6 in that a plurality of video output units 850 and 851 and a plurality of audio output units 860 and 861 are included. Further, this configuration comprises a plurality of image processi...

third embodiment

[0063]A third embodiment of the present invention will be described next with reference to FIG. 8.

[0064]Similar to the video / audio output apparatus 700 according to the first embodiment, video audio output apparatus 900 according to this embodiment comprises an image extraction unit 901 (which inputs first video data 930 and second video data 932, and outputs partial image data 922), an audio source separation unit 902 (which inputs normal audio data 931, and outputs audio source differentiated data 923), a screen control unit 903 (which inputs image control information 920), a image selection unit 904, a tile generation unit 905 (which inputs the partial image data 922, the audio source differentiated data 923, and audio source differentiated audio data 933, and outputs tile data including sound volume information 911, partial image data 913, and / or audio source differentiated data 914), screen composition unit 906, and audio composition unit 907. In FIG. 8, the screen control unit...

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Abstract

A video / audio output apparatus comprises a control unit adapted to perform screen management of output video, and generate positional relationship information for each input video data; an extraction unit adapted to generate partial image data from the each input video data; an input unit adapted to input audio source differentiated audio data; and a tile generation unit adapted to configure tile data by compiling the partial image data generated by the extraction unit and the audio source differentiated audio data for each drawing region on a screen, based on the positional relationship information generated by the control unit.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. application Ser. No. 11 / 964,299, filed Dec. 26, 2007 and Japanese Patent Application No. 2006-352803, filed Dec. 27, 2006, which are hereby incorporated by reference herein in their entireties.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a video / audio output apparatus, a video / audio output method, a computer program and a storage medium, and in particular to a preferred technique used for matching playback audio with playback video.[0004]2. Description of the Related Art[0005]In video / audio output apparatuses capable of simultaneous playback of plural pieces of video and audio data, part of one screen sometimes gets hidden by another screen. In such a case, the audio data for each screen needs to be composed using one method or another in order to output audio. Technology concerning apparatuses for performing such processing is disclosed in Jap...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N5/445H03G3/20H04N7/173H04N21/41H04N21/431H04N21/439H04N21/81H04S7/00
CPCH04N21/234318H04N21/47205H04N21/44012H04N21/439
Inventor KITASHOU, TETSUROU
Owner CANON KK