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AssigneeCanon Kabushiki Kaisha
InventorHirotaka Shiiyama
Estimating the term…
In a moving image playback apparatus, periods A which represent human utterance periods, and other periods B are determined on the basis of sub-information contained in moving image data. Based on the moving image data, periods A undergo high-speed moving image playback with playback voice within the speed range from a normal speed to a predetermined speed (e.g., 1.5 to 2 times of the normal speed) at which the user can recognize playback contents, while periods B undergo high-speed moving image playback with at least playback voice in a small tone volume or silent high-speed moving image playback at a speed (e.g., 5 to 10 times of the normal speed) higher than the predetermined speed. During the playback, the moving image playback speeds can be adjusted in accordance with user attribute information registered in a user profile (14).
A moving image playback apparatus which enable to play back moving image information at a high speed, comprising:
A moving image playback method which enable to play back moving image information at a high speed, comprising:
A computer program which issues an operation instruction that makes a computer implement a moving image playback apparatus that enable to play back moving image information at a high speed, comprising:
A storage medium storing a computer program which issues an operation instruction that makes a computer implement a moving image playback apparatus that enable to play back moving image information at a high speed, comprising:
Dependencies are inferred from the claim text.
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Processing of audio elementary streams: involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio…
Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel: reproducing at a different information rate from the…
Programmed access in sequence to addressed parts of tracks of operating record carriers: of operating discs
Programmed access in sequence to addressed parts of tracks of operating record carriers: of operating tapes
Term end not estimated
The present invention relates to the field of a moving image playback technique that involves audio playback.
Conventionally, a moving image playback apparatus such as a video tape recorder or the like, which also plays back audio data, comprises a multiple-speed playback function, quick fastforward function, and the like to allow the user to preview the entire moving image (i.e., the full contents to be played back) within a short period of time upon playback.
For a video tape recorder as a typical moving image playback apparatus, the following technique has been proposed in recent years. That is, upon executing multiple-speed playback of a recording medium, first voice periods in which voice energy is equal to or higher than a predetermined threshold value, and second voice periods in which voice energy is lower than the predetermined threshold value, are detected, and audio signal components in the first voice periods successively undergo pitch conversion and are played back. In this way, the contents of the recording medium can be audibly played back at a double speed, so that the user can understand the contents of playback voice which is slightly in rapid utterance, while deflating the second voice periods.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a diagram showing an outline of a moving image quick preview algorithm in a moving image playback apparatus according to the first embodiment;
FIG. 2 is a flow chart showing an outline of a human voice period detection process detected by a moving image quick preview index generation module 100 in the first embodiment;
Preferred embodiments of the present invention will now be described in detail in accordance with the accompanying drawings.
[First Embodiment]
An outline of the operation of a moving image playback apparatus in this embodiment will be explained first with reference to FIG. 1.