DIGITAL DATA FALSE ALTERATION DETECTION PROGRAM AND DIGITAL DATA FALSE ALTERATION DETECTION APPARATUS
Application 733/KOLNP/2004 published 2006-04-14, filed 2004-06-01
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 . (FIG.1).
Applicant
FUSO PRECISION CO. LTD., AND NAIGAI PROCESS CO. LTD.,
284, DAIGO-CHO, GOJYO-DORI KARASUMA NISHI-IRU, SHIMOGYO-KU, KYOTO-SHI, KYOTO 600-8016, JAPAN. AND 566-183, FUJITA, OKAYAMA-SHI, OKAYAMA 701-0221, JAPAN.
Inventor
1. TAKEDA NAOTO 2. TANIGUCHI MASAMICHI 3. TANIGUCHI KUNIO 4. YAMAMOTO KIYOTAKA
International Info
Classification: H04N 1/387
Publication Number: WO 03/049422
Application Date: 2002-12-03
Priority Information
2001-368627 JAPAN 2001-12-03