Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1998-05-06
2001-10-09
Tran, Thai (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C360S013000, C369S083000
Reexamination Certificate
active
06301429
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a reproducing apparatus suitably usable in various types of video and audio players, video recorders, etc., and more particularly to a reproducing apparatus adapted to process an image for fade-in and -out, etc.
2. Description of Related Art
In motion pictures, TV programs, etc., imaging techniques such as fade-in or -out of video and audio signals are often used when a person appears in or leaves a scene. Also, when a scene is changed to another, a video signal is very often processed for cross-fade.
Explanation will be made of an image or video signal, for example, the “fade-in” is a technique or signal processing by which an image not visible is made to appear little by little, and the “fade-out” is a technique by which a currently visible image is made to gradually disappear. Image fade-in can be attained by raising the level of a video signal gradually up to a predetermined level, while fade-out can be attained by gradually lowering the video signal level and finally down to zero.
Further, the “cross-fade” is a technique by which a currently visible image is made to gradually disappear while another image is composed little by little and finally only this composed image is displayed. For example, one video signal is gradually lowered in level while another video signal is raised in level little by little and finally the latter video signal is delivered as an output.
Recording media such as cassette tapes, discs, etc. have recorded therein video and audio signals edited for fade-in, fade-out or cross-fade. When it is necessary to re-edit the video and audio signals recorded as so edited in such medium, it is not possible to restore the video signal once edited for fade-in or the like, etc. to its original state, which is very convenient. In other words, for re-edition of a video signal or the like in a recording medium to change a position at which the signal is to be processed for fade-in or otherwise, an edited video signal has to be written over an existing video signal or the like in a recording medium since the existing signal cannot be used. This is very disadvantageous in trying to edit the video signal many times.
SUMMARY OF THE INVENTION
The present invention has an object to overcome the above-mentioned drawbacks of the prior art by providing a recording apparatus, recording apparatus and recording medium in which an existing video signal or audio signal in the recording medium can be used to repeatedly process the signal by fade-in, fade-out or cross-fade.
The above object can be accomplished by providing a reproducing apparatus comprising, according to the present invention, a reproducing means for reproducing a video signal and a fade information indicative of a change in output level of the video signal, recorded in a recording medium, and an output adjusting means for adjusting the output level based on the fade information and then delivering the video signal from the reproducing means.
Therefore, to provide a video signal having not been specially processed, the reproducing means will deliver an image having been processed for fade-in based on the fade information.
The above object can also be accomplished by providing a recording apparatus comprising, according to the present invention, a controlling means for setting a fade information indicative of a change in output level of a video signal, a fade information generating means for producing the fade information based on the setting made by the controlling means, and a recording means for recording the produced fade information and the video signal into a recording medium.
Therefore, since the recording apparatus records a fade information to provide an image having been processed for a fade, it will record a normal video signal without recording into the recording medium a video signal having been processed for the fade.
Also the above object can be accomplished by providing a recording medium having recorded therein a video signal and a fade information indicative of a change in output level of the video signal.
Therefore, since the recording medium has recorded therein a fade information to provide an image having been processed for a fade, it will record a normal video signal without recording into it a video signal having been processed for the fade.
The reproducing apparatus of the present invention comprises a reproducing means for reproducing an audio signal and a fade information indicative of a change in output level of the audio signal, recorded in a recording medium and an output adjusting means for adjusting the output level based on the fade information and then delivering the audio signal supplied from the reproducing means.
Therefore, to provide an audio signal having not been specially processed, the reproducing means will deliver a sound having been processed for fade-in based on the fade information.
The recording apparatus of the present invention comprises a controlling means for setting a fade information indicative of a change in output level of an audio signal, a fade information generating means for producing the fade information based on the setting made by the controlling means, and a recording means for recording the produced fade information and the audio signal into a recording medium.
Therefore, since the recording apparatus records a fade information to provide a sound having been processed for a fade, it will record a normal audio signal without recording into the recording medium an audio signal having been processed for the fade.
Also the recording medium of the present invention has recorded therein an audio signal and a fade information indicative of a change in output level of the audio signal.
Therefore, since the recording medium has recorded therein a fade information to provide a sound having been processed for a fade, it will record a normal audio signal without recording into it an audio signal having been processed for the fade.
As having been described in the foregoing, the reproducing apparatus according to the present invention can reproduce a video signal recorded in a recording medium and a fade information indicative of a change in output level of the video signal and adjust the output level of the video signal based on the fade information to process the video signal even if is has not been processed for a fade.
The recording apparatus according to the present invention can record a video signal along with a fade information indicative of a change in output level of the video signal into a recording medium to process the video signal even if it has not been processed for a fade.
Also for changing the fade position to another, only the fade information has to be rewritten without any special processing of the video signal.
The recording medium according to the present invention can record a video signal and a fade information indicative of a change in output level of the video signal to process the video signal based on the fade information.
The reproducing apparatus of the present invention can reproduce an audio signal recorded in a recording medium and a fade information indicative of a change in output level of the audio signal and adjust the output level of the audio signal based on the fade information to process the audio signal even if is has not been processed for a fade.
The recording apparatus according to the present invention can record an audio signal along with a fade information indicative of a change in output level of the audio signal into a recording medium to process the audio signal even if it has not been processed for a fade.
The recording medium according to the present invention can record an audio signal and a fade information indicative of a change in output level of the audio signal to process the audio signal based on the fade information
REFERENCES:
patent: 4992891 (1991-02-01), Komatsu et al.
patent: 5166835 (1992-11-01), Tanizawa
patent: 5625461 (1997-04-01), Okamoto et al.
Frommer William S.
Frommer Lawrence & Haug LLP.
Megerditchian Samuel H.
Sony Corporation
Tran Thai
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