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1. (WO2017033348) SIGNATURE GENERATION SYSTEM, SIGNATURE GENERATION APPARATUS, AND SIGNATURE GENERATION METHOD

Pub. No.:    WO/2017/033348    International Application No.:    PCT/JP2016/000861
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Fri Feb 19 00:59:59 CET 2016
IPC: H04N 21/235
H04N 21/835
H04N 7/18
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: KOGATA, Katsunori
古賀田 勝則
MATSUO, Masakatsu
松尾 正克
TANAKA, Hiroyuki
田中 裕之
MUTOU, Kouji
武藤 浩二
NOGUCHI, Hideo
野口 英男
ARITA, Satoshi
有田 哲志
Title: SIGNATURE GENERATION SYSTEM, SIGNATURE GENERATION APPARATUS, AND SIGNATURE GENERATION METHOD
Abstract:
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.