Recording device
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United States of America Patent
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-
Dec 2, 2003
Grant Date -
N/A
app pub date -
Nov 3, 1999
filing date -
Nov 13, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A recording device which is capable of preventing alteration of a generated digital picture data and suitable for improving the reliability of the digital picture data as an evidence. The recording device includes a related information embedding unit for embedding a related information on the digital picture data stored in a related information storing unit in the digital picture data obtained by a picture receiving unit by means of the digital watermarking technique, a digital signature generating unit for generating a digital signature of the digital picture data in which the related information has been embedded, and a recording unit for adding the digital signature to the digital picture data in which the related information has been embedded and storing it in a memory unit.
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