Title:
RECORDING AND REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JP3956099
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make efficient use of the storage capacity of a recording and reproducing device by automatically discriminating the degree of importance of data stored on the recording and reproducing device and by automatically erasing the data in accordance with foregoing automatic discrimination.
SOLUTION: The recording and reproducing device comprises: a data obtaining unit 100 for capturing data; a feature extraction means 107 for preparing key information representing the feature of the captured data; a recorder 108 for recording the captured data and the key information on the data; a reproducing means 113 for outputting the data recorded on the recorder 108; an erasing means 120 for erasing the data recorded on the recorder 108; and a means for evaluating the degree of importance 119 for judging the degree of importance of each recorded data to output the degree of importance to the erasing means 120. The erasing means 120 erases the data when the degree of importance outputted from the means 119 is equal to or lower than the previously established threshold value and allows the key information on the data to leave behind without erasure.
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Inventors:
Masaki Odai
Akagi Kyo
Takashi Yamaguchi
Akagi Kyo
Takashi Yamaguchi
Application Number:
JP2002010530A
Publication Date:
August 08, 2007
Filing Date:
January 18, 2002
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G11B27/00; H04N5/765; G11B20/10; H04N5/781; (IPC1-7): G11B27/00; G11B20/10; H04N5/765; H04N5/781
Domestic Patent References:
| JP11027610A | ||||
| JP6223116A | ||||
| JP2000165788A | ||||
| JP2001175517A |
Attorney, Agent or Firm:
Hirotsugu Yoshioka