公开(公告)号：US11546655B2

公开(公告)日：2023-01-03

申请号：US16941575

申请日：2020-07-29

Applicant: SoftBank Corp.

Inventor： Takashi Tsutsui ,  Ayumu Yabuki

IPC: H04N21/436 ,  H04N21/4363 ,  H04B7/0456 ,  H04N21/431 ,  H04W72/04

Abstract: In accordance with increasing communication demand, means for efficiently providing mass downstream communication at a low cost are desired. Accordingly, a communication system providing supplemental downlink as well as multicast communication comprising a display control device for causing a display unit to display a video, and a communication terminal having an image capturing unit for directly capturing the video displayed by the display unit or capturing a video projected or reflected on a wall surface or the like is provided, wherein the display control device includes a video acquiring unit, a region identification unit, a video generating unit, and a display control unit, and the communication terminal includes a region identification unit, a decoding unit, and a mechanism for communicating a control signal for supplemental downlink by the above-described optical communication using means other than optical communication (means such as WiFi, mobile data communication or the like).

公开(公告)号：US20250113188A1

公开(公告)日：2025-04-03

申请号：US18842903

申请日：2023-03-09

Applicant: SoftBank Corp.

Inventor： Ayumu Yabuki ,  Naozumi Ando

IPC: H04W12/062 ,  H04W12/0431 ,  H04W76/10

Abstract: Provided is a communication system capable of highly confidential and highly secure communication between an access point (AP) apparatus and a communication terminal even when constructing an open network environment of wireless connection. The communication system comprises an AP apparatus that uses radio waves in the terahertz band, a base station of a mobile communication network, and a server. When a connection request is made from the communication terminal to the AP apparatus, and when information of the connection request is received from the communication terminal via the base station, the server issues a common encryption key used for communication between the AP apparatus and the communication terminal, transmits the common encryption key to the communication terminal via the base station, and transmits the common encryption key to the communication terminal via the mobile communication network or another communication network. Each of the AP apparatus and the communication terminal receives the common encryption key from the server, and starts communication using the common encryption key.

公开(公告)号：US11871074B2

公开(公告)日：2024-01-09

申请号：US17985162

申请日：2022-11-11

Applicant: SoftBank Corp.

Inventor： Takashi Tsutsui ,  Ayumu Yabuki

IPC: H04N21/4363 ,  H04N21/431 ,  H04B7/0456 ,  H04W72/04 ,  H04W72/23

CPC classification number: H04N21/43637 ,  H04B7/0456 ,  H04N21/4316 ,  H04N21/43635 ,  H04W72/23

Abstract: In accordance with increasing communication demand, means for efficiently providing mass downstream communication at a low cost are desired. Accordingly, a communication system providing supplemental downlink as well as multicast communication comprising a display control device for causing a display unit to display a video, and a communication terminal having an image capturing unit for directly capturing the video displayed by the display unit or capturing a video projected or reflected on a wall surface or the like is provided, wherein the display control device includes a video acquiring unit, a region identification unit, a video generating unit, and a display control unit, and the communication terminal includes a region identification unit, a decoding unit, and a mechanism for communicating a control signal for supplemental downlink by the above-described optical communication using means other than optical communication (means such as WiFi, mobile data communication or the like).