Signal recording/reproducing apparatus, signal recording/reproducing method, signal reproducing apparatus, signal reproducing method, and program
First Claim
1. A signal recording/reproducing apparatus comprising:
- feature vector generation means for extracting a feature quantity from a video signal and/or an audio signal and forming its vector to generate a feature vector;
recording means for recording the video signal and/or the audio signal and the feature vector generated by the feature vector generation means;
registration means for registering at least a part of the feature vectors recorded in the recording means;
coincidence detection means for detecting a feature vector substantially coincident with at least one of feature vectors registered by the registration means, from the feature vector recorded in the recording means;
reproduction point setting means for setting a reproduction start point based on the detected feature vector; and
reproduction means for reproducing the video signal and/or the audio signal from the reproduction start point set by the reproduction point setting means.
2 Assignments
0 Petitions
Accused Products
Abstract
This invention is a signal recording/reproducing apparatus (1) for searching for a reproduction position desired by a user from a recorded video signal and/or audio signal and reproducing the signal. The apparatus has a feature vector generating unit (30). When recording a video signal/audio signal, the feature vector generating unit (30) generates a feature vector characterizing the video signal and/or audio signal and also records this feature vector to a recording unit (10). When the recorded video signal/audio signal is reproduced, a registration unit (40) registers feature vectors near a position designated by the user, as bookmarks. When the user designates one of the bookmarks, a coincidence detecting unit (60) searches for a coincident position on the basis of the feature vector of the bookmark and the recorded feature vector, and a reproducing unit (20) starts reproduction of the video signal and/or audio signal at a reproduction position set by a reproduction point setting unit (70) on the basis of the coincident position.
-
Citations
41 Claims
-
1. A signal recording/reproducing apparatus comprising:
-
feature vector generation means for extracting a feature quantity from a video signal and/or an audio signal and forming its vector to generate a feature vector;
recording means for recording the video signal and/or the audio signal and the feature vector generated by the feature vector generation means;
registration means for registering at least a part of the feature vectors recorded in the recording means;
coincidence detection means for detecting a feature vector substantially coincident with at least one of feature vectors registered by the registration means, from the feature vector recorded in the recording means;
reproduction point setting means for setting a reproduction start point based on the detected feature vector; and
reproduction means for reproducing the video signal and/or the audio signal from the reproduction start point set by the reproduction point setting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A signal recording/reproducing method comprising:
-
a feature vector generation step of extracting a feature quantity from a video signal and/or an audio signal and forming its vector to generate a feature vector;
a recording step of recording the video signal and/or the audio signal and the feature vector generated at the feature vector generation step into recording means;
a registration step of registering at least a part of the feature vectors recorded in the recording means;
a coincidence detection step of detecting a feature vector substantially coincident with at least one of feature vectors registered at the registration step, from the feature vector recorded in the recording means;
a reproduction point setting step of setting a reproduction start point based on the detected feature vector; and
a reproduction step of reproducing the video signal and/or the audio signal from the reproduction start point set at the reproduction point setting step. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. A program for causing a computer to execute predetermined processing, the program comprising:
-
a feature vector generation step of extracting a feature quantity from a video signal and/or an audio signal and forming its vector to generate a feature vector;
a recording step of recording the video signal and/or the audio signal and the feature vector generated at the feature vector generation step into recording means;
a registration step of registering at least a part of the feature vectors recorded in the recording means;
a coincidence detection step of detecting a feature vector substantially coincident with at least one of feature vectors registered at the registration step, from the feature vector recorded in the recording means;
a reproduction point setting step of setting a reproduction start point based on the detected feature vector; and
a reproduction step of reproducing the video signal and/or the audio signal from the reproduction start point set at the reproduction point setting step. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
-
25. A recording medium on which a program for causing a computer to execute predetermined processing is recorded, the program comprising:
-
a feature vector generation step of extracting a feature quantity from a video signal and/or an audio signal and forming its vector to generate a feature vector;
a recording step of recording the video signal and/or the audio signal and the feature vector generated at the feature vector generation step into recording means;
a registration step of registering at least a part of the feature vectors recorded in the recording means;
a coincidence detection step of detecting a feature vector substantially coincident with at least one of feature vectors registered at the registration step, from the feature vector recorded in the recording means;
a reproduction point setting step of setting a reproduction start point based on the detected feature vector; and
a reproduction step of reproducing the video signal and/or the audio signal from the reproduction start point set at the reproduction point setting step. - View Dependent Claims (26, 27, 28, 29, 30, 31)
-
-
32. A signal reproducing apparatus for reproducing a video signal and/or an audio signal recorded on a recording medium, the apparatus comprising:
-
designation means for designating a reproduction start position of the video signal and/or the audio signal;
reproduction point setting means for setting a position temporally preceding the position designated by the designation means, as a reproduction start point; and
reproduction means for starting reproduction of the video signal and/or the audio signal at the reproduction start point set by the reproduction point setting means. - View Dependent Claims (33, 34, 35, 36)
-
-
37. A signal reproducing method for reproducing a video signal and/or an audio signal recorded on a recording medium, the method comprising:
-
a designation step of designating a reproduction start position of the video signal and/or the audio signal;
a reproduction point setting step of setting a position temporally preceding the position designated at the designation step, as a reproduction start point; and
a reproduction step of starting reproduction of the video signal and/or the audio signal at the reproduction start point set at the reproduction point setting step. - View Dependent Claims (38, 39, 40, 41)
-
Specification