公开(公告)号：US20180176503A1

公开(公告)日：2018-06-21

申请号：US15900134

申请日：2018-02-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Katsunori KOGATA ,  Masakatsu MATSUO ,  Hiroyuki TANAKA ,  Kouji MUTOU ,  Hideo NOGUCHI ,  Satoshi ARITA

IPC: H04N5/92 ,  H04N21/8352 ,  H04N21/4223 ,  H04N21/433 ,  H04N21/4408 ,  H04N21/4405 ,  H04N21/435 ,  H04N5/77 ,  H04N7/18

CPC classification number: H04N5/9201 ,  H04N5/77 ,  H04N5/913 ,  H04N7/183 ,  H04N21/4223 ,  H04N21/4334 ,  H04N21/435 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/8352 ,  H04N2005/91342

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.