Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1998-05-15
2002-12-17
Tran, Thai (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000
Reexamination Certificate
active
06496647
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a video signal recording apparatus and method, a video signal reproduction apparatus and method, and a video signal recording and reproduction apparatus and method for recording or reproducing a video signal together with a search screen for knowing an outline of the content of the video signal and searching the video signal, as well as a recording medium containing this search screen information.
2. Description of the Prior Art
Recently, a recording medium such as the optical disc, hard disc, or digital video tape for recording a video signal broadcast by a television broadcast or digital satellite broad cast has a recording capacity in the order of several mega and several tens of giga bytes. With a recording medium having such a large capacity, it is possible to continuously record a video signal for a long period of time such as several hours to 10 hours.
When such a recording medium is used to record a video signal of a television broadcast or the like, even by high-speed reproduction of the recording medium after the recording it is impossible to check all the contents for a short period of time. Consequently, when such a recording medium of a large capacity is used for recording a television broadcast or the like, a function is required for checking outlines of the contents recorded and recording positions of programs.
However, it has been very difficult to check the outline of the contents of a video signal recorded on a conventional recording medium. For example, there can be considered an interval reproduction for skipping a reproduction point for a predetermined period of time so as to check the outline of the contents recorded on a recording medium, but this interval reproduction carries out a reproduction regardless of an information content of a video signal recorded. Accordingly, it is difficult to grasp the contents of the video signal by this interval reproduction.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a video signal recording apparatus and recording method for recording together with a video signal a search screen for grasping an outline of the content of this video signal and searching the video signal.
Moreover, another object of the present invention is to provide a video signal reproduction apparatus and reproduction method for reproducing the aforementioned search screen.
Yet another object of the present invention is to provide a video signal recording/reproduction apparatus and recording/reproduction apparatus for recording and reproducing the aforementioned search screen.
Still yet another object of the present invention is to provide a recording medium on which the aforementioned search screen information is recorded.
The video signal recording apparatus according to the present invention includes: sub information/feature amount detecting means for detecting a sub information and/or feature amount from a video signal; identification signal generating means for generating a one or more than one identification signals corresponding to respective screens of a video signal, according to the sub information and/or feature amount; and recording means for recording the identification signal together with the video signal on a recording medium.
In this video signal recording apparatus, identification signals corresponding to respective screens are recorded together with a video signal on a recording medium.
The video signal recording method according to the present invention includes: a step of detecting a sub information and/or feature amount from a video signal; a step of generating one or more than one identification signals corresponding to respective screens of the video signal, according to the sub information and/or feature amount; and a step of recording the identification signal together with the video signal on a recording medium.
In this video signal recording method, a video signal is recorded together with a sub information and/or feature amount of the video signal.
The video signal reproduction apparatus according to the present invention includes: identification signal detecting means for detecting one or more than one identification signals together with a video signal from a recording medium on which the one or more than one identification signals are recorded corresponding to respective screens according to a sub information and/or feature amount of the video signal; and reproduction means which uses the identification signal detected by the identification signal detecting means, for reproducing a video signal of the screen corresponding to the identification signal from the recording medium.
In this video signal reproduction apparatus according to the present invention, according to one or more than one identification signals generated according to a sub information and/or feature amount, a corresponding video signal is reproduced.
The video signal reproduction method according to the present invention includes: a step of detecting from a recording medium containing a video signal together with one or more than one identification signals recorded corresponding to respective screens according to a sub information and/or feature amount of the video signal, the one or more than one identification signals; and a step of reproducing from the recording medium, video signals of screens corresponding to the identification signals, according to the aforementioned identification signals detected.
In this video signal reproduction method, according to one or more than one identification signals generated according to the sub information and/or feature amount, a corresponding video signal is reproduced.
The video signal recording and reproducing apparatus according to the present invention includes a video signal recording block and a video signal reproduction block,
the video signal recording block having: sub information/feature amount detecting means for detecting a sub information and/or feature amount from a video signal; identification signal generating means for generating a one or more than one identification signals corresponding to respective screens of a video signal, according to the sub information and/or feature amount; and recording means for recording the identification signal together with the video signal on a recording medium; and
the video signal reproduction block having: identification signal detecting means for detecting the one or more than one identification signals from the recording medium and reproduction means which according to the identification signal detected by the identification signal detecting means, reproduces from the recording medium a video signal of the screen corresponding to the identification signal.
In this video signal recording and reproduction apparatus, a video signal is recorded on a recording medium together with an identification signal generated according to a sub information/feature amount corresponding to respective screens, and a video signal corresponding to this identification signal is reproduced.
The video signal recording and reproducing method according to the present invention includes: a step of detecting a sub information and/or feature amount from a video signal; a step of generating one or more than one identification signals corresponding to respective screens of the video signal, according to the sub information and/or feature amount; a step of recording the one or more than one identification signals together with the video signal on a recording medium; a step of detecting from the recording medium the one or more than one identification signals; and a step of reproducing a video signal of screens corresponding to the identification signals detected.
In this video signal recording and reproduction method, a video signal is recorded on a recording medium together with an identification signal generated according to a sub information and/or feature amount, and a video signal corresponding to this identification signal is reproduced.
The recording me
Arai Naohisa
Suito Taro
Tomita Masami
Frommer William S.
Frommer & Lawrence & Haug LLP
Simon Darren M.
Sony Corporation
Tran Thai
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