US 12,223,072 B2
Right-holder terminal, user terminal, and content usage method
Shigenori Ohashi, Tokyo (JP); Shigeru Fujimura, Tokyo (JP); Atsushi Nakadaira, Tokyo (JP); Masayoshi Chikada, Tokyo (JP); Tatsuro Ishida, Tokyo (JP); and Hiroki Watanabe, Tokyo (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/287,384
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Oct. 23, 2019, PCT No. PCT/JP2019/041517
§ 371(c)(1), (2) Date Apr. 21, 2021,
PCT Pub. No. WO2020/085378, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 2018-200103 (JP), filed on Oct. 24, 2018.
Prior Publication US 2021/0397678 A1, Dec. 23, 2021
Int. Cl. G06F 21/62 (2013.01); G06F 16/27 (2019.01); G06F 21/10 (2013.01)
CPC G06F 21/6218 (2013.01) [G06F 16/27 (2019.01); G06F 21/1015 (2023.08)] 6 Claims
OG exemplary drawing
 
1. A right-holder terminal configured to be used by a right holder of content and to transmit permission data for the content to a user of the content, wherein
data of the content is registered in a file management system; and
an identifier of the user in the file management system is registered in a distributed ledger, in association with an identifier of the content, as a valid user of the content;
the right-holder terminal comprising:
a permission request receiving unit, including one or more processors, configured to receive, from the file management system, permission request data for the content including the identifier of the user;
a verification unit, including one or more processors, configured to verify that the identifier of the user registered in the distributed ledger as a valid user of the content corresponds to the identifier of the user included in the permission request data; and
a permission issuing unit, including one or more processors, configured to transmit, to the file management system, the permission data for permitting use of the content by the user.