SIGNATURE GENERATION SYSTEM, SIGNATURE GENERATION APPARATUS, AND SIGNATURE GENERATION METHOD

WIPO Patent Application WO/2017/033348

A1

A signature to be used to verify whether or not an original version video captured by a camera has been altered is assigned in the camera to improve the evidential quality of the original version video captured by the camera. The camera (2) includes: an image pickup unit that captures a video of an area to be monitored; a CPU that generates, using a portion or the entirety of video data of the area to be monitored captured by the image pickup unit, a signature for verifying whether or not the video data have been altered; and a network communication unit that sequentially transmits, to a client terminal (4), signed video data obtained by assigning the signature generated by the CPU to the video data. The client terminal (4) includes: a network communication unit that receives the signed video data that are sequentially transmitted from the network communication unit; a CPU that verifies whether or not the video data included in the signed video data received by the network communication unit have been altered; and a display (43) that outputs the result of the verification performed by the CPU.

KOGATA KATSUNORI
MATSUO MASAKATSU
TANAKA HIROYUKI
MUTOU KOUJI
NOGUCHI HIDEO
ARITA SATOSHI

PCT/JP2016/000861

March 02, 2017

February 18, 2016

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PANASONIC IP MAN CO LTD (JP)

H04N7/18; H04N21/235; H04N21/835

JP2012114654A	2012-06-14
JPH10164549A	1998-06-19
JP2013055511A	2013-03-21
JP2009081756A	2009-04-16

KAMATA, Kenji et al. (JP)

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