公开(公告)号：US20220360984A1

公开(公告)日：2022-11-10

申请号：US17624513

申请日：2019-07-04

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kazutaka HARA ,  Tomohiro TANIGUCHI ,  Ryota SHIINA ,  Tomoki MURAKAMI ,  Toshiro NAKAHIRA

IPC: H04W12/06 ,  H04B10/2575 ,  H04B10/54

Abstract: An objective is to provide a communication system, a terminal, a communication method, and a program capable of improving the probability of successful authentication regardless of mobility of the terminal.
The communication system according to the present invention includes a terminal 30 including: a sensor unit 36 that senses a state of the terminal and includes at least one of an acceleration sensor, a gyro sensor, a position sensor, and a proximity sensor; an optical receiver 31 that receives an optical modulation signal and outputs an electrical signal; a correction circuit 34 that corrects the electrical signal on a basis of the state of the terminal sensed by the sensor unit 36 when one of the following is true: illuminance of light received from an optical transmitter 21 by the optical receiver 31 is equal to or lower than an illuminance threshold value; and a signal intensity of the electrical signal output by the optical receiver 31 is equal to or lower than an intensity threshold value; an authentication information checking circuit 32 that checks the authentication information contained in the electrical signal; and a terminal-side RF transmitter/receiver 33 that transmits the authentication information to a base station 20 via RF wireless communication.

公开(公告)号：US20220338103A1

公开(公告)日：2022-10-20

申请号：US17632860

申请日：2019-08-09

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Toshiro NAKAHIRA ,  Tomoki MURAKAMI ,  Ryota SHIINA ,  Kazutaka HARA ,  Tomohiro TANIGUCHI

IPC: H04W48/16 ,  H04W24/10

Abstract: A radio terminal station device includes a communication unit, an information acquisition unit, a threshold calculation unit, a detection unit, and a system selection unit. The communication unit selects any one of a plurality of different communication systems and performs a radio communication. The information acquisition unit acquires information including a communication state of the radio terminal station device and at least communication states of other radio terminal station devices. The threshold calculation unit calculates a threshold value for detecting deterioration of the communication state of the radio terminal station device. The detection unit detects the deterioration of the communication state of a communication system used by the radio terminal station device. The system selection unit selects an optimal communication system from among the communication systems used by the other radio terminal station devices when the deterioration of the communication state of the communication system of the radio terminal station device is detected. Thus, it is possible to maintain favorable communication quality.

公开(公告)号：US20220255634A1

公开(公告)日：2022-08-11

申请号：US17624534

申请日：2019-07-04

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Kazutaka HARA ,  Tomohiro TANIGUCHI ,  Ryota SHIINA ,  Tomoki MURAKAMI ,  Toshiro NAKAHIRA

IPC: H04B10/85 ,  H04W12/06

Abstract: In the present disclosure, a wireless base station apparatus sends out continuous light having a predetermined characteristic to a wireless terminal apparatus, and the wireless terminal apparatus selects authentication information corresponding to the predetermined characteristic, and transmits the authentication information to the wireless base station apparatus by RF wireless. When confirming that the received authentication information matches authentication information corresponding to the predetermined characteristic, the wireless base station apparatus permits information communication between the wireless terminal apparatus and an upper network.

公开(公告)号：US20250133258A1

公开(公告)日：2025-04-24

申请号：US18681484

申请日：2021-08-11

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Toshihito FUJIWARA ,  Tatsuya FUKUI ,  Ryota SHIINA ,  Hiroya ONO

IPC: H04N21/431

Abstract: An object of the present disclosure is to reduce a time delay from inputting an asynchronous video to outputting the synthesized video.
The present disclosure relates to a device for synthesizing a plurality of video signals input asynchronously into a video signal displayed on one screen, in which, when input of an input frame is not completed for any one of the plurality of video signals, using data of a past input frame of the video signal instead of data whose input has not been completed, the video signal displayed on the one screen is synthesized.

公开(公告)号：US20250097493A1

公开(公告)日：2025-03-20

申请号：US18727399

申请日：2022-01-12

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Hiroya ONO ,  Tatsuya FUKUI ,  Toshihito FUJIWARA ,  Ryota SHIINA

IPC: H04N21/24

Abstract: Provided are a delay time measurement server, a delay time measurement method, and a program for calculating a video display delay time without arranging a special device on the client side. The delay time measurement server calculates a video transmission delay time from when a video signal obtained by encoding a specific video is transmitted toward a monitor until when a reaction signal for the specific video is received, as a video display delay time from when the video signal is transmitted toward the monitor until when the video is displayed on the monitor.

公开(公告)号：US20240323704A1

公开(公告)日：2024-09-26

申请号：US18269370

申请日：2020-12-28

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Ryota SHIINA ,  Shinya TAMAKI ,  Tetsuya SUZUKI ,  Yasutaka KIMURA ,  Tomohiro TANIGUCHI ,  Sei KOU ,  Tomoya HATANO ,  Takashi YAMADA

IPC: H04W16/28 ,  H04W28/06 ,  H04W64/00

CPC classification number: H04W16/28 ,  H04W28/06 ,  H04W64/00

Abstract: An object of the present disclosure is to reduce traffic required for transmission of beacon information from a sensor apparatus to an access point and reduce power consumption without affecting position estimation processing in a high-order cloud or server.
In order to achieve the above object, an Internet of Things (IoT) communication system according to the present disclosure is the IoT communication system including one or a plurality of sensor apparatuses and an access point that performs wireless communication with the sensor apparatuses, in which the access point emits a plurality of beams to an arbitrary point, the sensor apparatus converts the beacon information acquired from the detected beams into compressed beacon information based on a beacon information correspondence table and transmits the compressed beacon information to the access point, and the access point restores the beacon information from the compressed beacon information received from the sensor apparatus based on the beacon information correspondence table.

公开(公告)号：US20240283890A1

公开(公告)日：2024-08-22

申请号：US18681662

申请日：2021-08-11

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Toshihito FUJIWARA ,  Tatsuya FUKUI ,  Ryota SHIINA ,  Hiroya ONO

IPC: H04N5/66 ,  H04N5/12

CPC classification number: H04N5/66 ,  H04N5/12

Abstract: An object of the present disclosure is to reduce a delay in time from the video input of an asynchronous video to the output of a composite video.
The present disclosure is a device and a method, in which the device composes a plurality of video signals which have been input asynchronously into a video signal displayed on one screen, wherein the one screen is constituted by a plurality of sub-screens the number of which is greater than the plurality of video signals, and the plurality of video signals are arranged on a sub-screen out of the plurality of sub-screens such that an output delay of each video signal is reduced to compose the plurality of video signals.

公开(公告)号：US20240244405A1

公开(公告)日：2024-07-18

申请号：US18579791

申请日：2021-08-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shinya TAMAKI ,  Ryota SHIINA ,  Tetsuya SUZUKI ,  Yasutaka KIMURA ,  Tomohiro TANIGUCHI

IPC: H04W4/38 ,  G06F16/908 ,  H04W4/029

CPC classification number: H04W4/38 ,  G06F16/908 ,  H04W4/029

Abstract: An object of the present invention is to provide a sensor terminal, a data collection unit, a data collection system, a data collection method, and a program capable of handling highly real-time sensing data while eliminating the need to generate a highly reliable timestamp. In a data collection system 302, a sensor terminal 11 receives broadcast time information (step S01), the sensor terminal 11 transmits related time information related to the time information and sensing data as a set (step S02), a data collection unit 12 receives the set (step S03), and the data collection unit 12 organizes the related time information and the sensing data included in the set in a database 12d on the basis of information for identifying the sensor terminal 11 (step S04).

公开(公告)号：US20240146633A1

公开(公告)日：2024-05-02

申请号：US18565466

申请日：2021-06-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUKUI ,  Toshihito FUJIWARA ,  Ryota SHIINA ,  Hiroya ONO

IPC: H04L43/0864 ,  H04L65/1059 ,  H04L65/80

CPC classification number: H04L43/0864 ,  H04L65/1059 ,  H04L65/80

Abstract: An object of the present disclosure is to measure a delay time occurring in a device that receives or outputs a video or an audio without requiring a special apparatus or precise inter-apparatus time synchronization.
According to the present disclosure, there is provided a system including: a remote apparatus connected to a device that executes processing of outputting or receiving data of a video or an audio via a communication network; and a user terminal that transmits and receives a signal to and from the remote apparatus via the communication network, in which the system performs, in the device and the remote apparatus, processing of outputting or receiving a video or an audio having a predetermined pattern, detects, in the user terminal or the remote apparatus, outputting or receiving of the video or the audio having the pattern, and calculates a delay time in the device by setting a timing at which outputting or receiving of the video or the audio having the pattern is detected as a reference and using timings at which the device and the remote apparatus transmit the data of the video or the audio having the pattern via the communication network.

公开(公告)号：US20240119018A1

公开(公告)日：2024-04-11

申请号：US18276239

申请日：2021-02-18

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya FUKUI ,  Toshihito FUJIWARA ,  Hiroya ONO ,  Ryota SHIINA ,  Tomohiko IKEDA

IPC: G06F13/36

CPC classification number: G06F13/36 ,  G06F2213/0042

Abstract: An object of the present disclosure is to enable data collection from a plurality of USB devices installed at remote locations.
The present disclosure is a USB transmission system including: a device-side transmitter/receiver configured to transmit/receive data to/from a USB device; and a host-side transmitter/receiver configured to transmit/receive data to/from a USB host, in which each of the device-side transmitter/receiver and the host-side transmitter/receiver includes a data transmission/reception unit configured to transmit/receive a packet of a USB protocol layer via a data network, and the host-side transmitter/receiver includes a hub configured to transfer data to be transmitted/received by the data transmission/reception unit included in the host-side transmitter/receiver to the USB host.