Cryptography – Video cryptography – Video electric signal modification
Reexamination Certificate
2002-12-03
2010-11-23
Zand, Kambiz (Department: 2434)
Cryptography
Video cryptography
Video electric signal modification
Reexamination Certificate
active
07840007
ABSTRACT:
A digital data false alteration detection program causes a computer to execute (a) a step (S1) of dividing digital data into a plurality of smaller block data, (b) a step (S2) of extracting noise inherent to a digital data acquisition device for each of the small block data, (c) a step (S3) of calculating correlation of the noise between adjacent small block data, and (d) a step (S4) of detecting small block data having noise correlation lower than a level predetermined for the surrounding small block data, as falsely altered data.
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Takeda Naoto
Taniguchi Kunio
Taniguchi Masamichi
Yamamoto Kiyotaka
Fuso Precision Co., Ltd.
Hodgson & Russ LLP
Naigai Process Co., Ltd.
Sanders Stephen
Zand Kambiz
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