US 12,081,813 B2
Video distribution method, distribution device, and inspection device
Shigeru Fujimura, Tokyo (JP); Hiroki Watanabe, Tokyo (JP); Tatsuro Ishida, Tokyo (JP); Shigenori Ohashi, Tokyo (JP); Atsushi Nakadaira, Tokyo (JP); and Kota Hidaka, Tokyo (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/286,292
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Oct. 4, 2019, PCT No. PCT/JP2019/039311
§ 371(c)(1), (2) Date Apr. 16, 2021,
PCT Pub. No. WO2020/080147, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018-197208 (JP), filed on Oct. 19, 2018.
Prior Publication US 2021/0360300 A1, Nov. 18, 2021
Int. Cl. H04N 21/2389 (2011.01); H04N 21/472 (2011.01); H04N 21/8358 (2011.01)
CPC H04N 21/23892 (2013.01) [H04N 21/47217 (2013.01); H04N 21/8358 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A video distribution method comprising:
at a distribution device:
receiving, from a playback device, an acquisition request to request video content, the acquisition request comprising (i) a content identifier indicating the requested video content and (ii) a destination identifier indicating a device for playing the requested video content;
distributing, to the playback device, the video content based on the acquisition request;
generating watermark-video-related information based on the acquisition request, the generated watermark-video-related information comprising a watermark identifier, a generation time, the destination identifier, and the content identifier;
generating a watermark video embedded with the watermark identifier from the acquisition request;
distributing, to the playback device, the generated watermark video separately from the distributed video content; and
recording the watermark-video-related information in storage, and at the playback device:
transmitting, to the distribution device, the acquisition request;
receiving, from the distribution device, the distributed video content;
receiving, from the distribution device, the distributed watermark video;
superimposing the watermark video on the played video, wherein the watermark video is overlaid on the played video;
displaying, to a display screen, the played video content and the superimposed watermark video;
playing, on the display screen, the video content and the superimposed watermark video; and
fast forwarding or rewinding the played video content while repeatedly playing the superimposed watermark video.