公开(公告)号：US20240357050A1

公开(公告)日：2024-10-24

申请号：US18579819

申请日：2021-08-06

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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

IPC: H04N5/067 ,  G09G5/377

CPC classification number: H04N5/0675 ,  G09G5/377 ,  G09G2340/10

Abstract: An object of the present disclosure is to reduce a delay time until a specific video input is output at the time of inputting a plurality of asynchronous video images and synthesizing the images.
The present disclosure is an apparatus for synthesizing a plurality of asynchronously input video signals into a video signal displayed on one screen, wherein the plurality of video signals are synthesized such that a delay of a video signal of a pivot input set among the plurality of video signals is reduced.

公开(公告)号：US20230283816A1

公开(公告)日：2023-09-07

申请号：US18011462

申请日：2020-06-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Toshihito FUJIWARA ,  Tomohiro TANIGUCHI ,  Hiroya ONO

IPC: H04N21/236 ,  H04N21/4385

CPC classification number: H04N21/23614 ,  H04N21/4385

Abstract: The present disclosure has an object to make it possible to transfer a large volume of image data to display devices that are at remote locations and that have different display performances, through a plurality of networks having different available bandwidths.
In an image delivery system in the present disclosure, a sending device packetizes image data by at least one of a frame and a scanning line, writes a plurality of identifiers in headers, and sends packets, and a receiving device selectively receives image data for which a predetermined identifier of the plurality of identifiers is written in the header.

公开(公告)号：US20230131976A1

公开(公告)日：2023-04-27

申请号：US17915571

申请日：2020-03-31

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hiroya ONO ,  Toshihito FUJIWARA ,  Shinya TAMAKI

IPC: H04L7/00

Abstract: An object of the present invention is to provide a communication system and a communication method that can avoid network congestion using a simple approach. The communication system of the present invention is characterized in that a time distribution server that transmits time information to terminals distributes a time different from the standard time for each terminal, and the terminal performs communication on the basis of the distributed time, and further characterized in that, for a time synchronizing packet transmitted from a time distribution server on the Internet to a terminal, a node or the like in the middle of the path performs transfer control or rewrites the packet, thereby causing the terminal to recognize a different time, and the terminal performs communication on the basis of the time.

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：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：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.

公开(公告)号：US20250130959A1

公开(公告)日：2025-04-24

申请号：US18686842

申请日：2021-09-03

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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

IPC: G06F13/12

Abstract: An object of the present disclosure is to enable connection of USB communication between remote locations without need of installation of a computer near a USB device or installation of new software on the server side.
A USB transmission system and a USB transmission method of the present disclosure are a USB transmission system including: a host simulation device that is connected to a USB device via a USB cable; and a device simulation device that is connected to a USB host via a USB cable, the host simulation device and the device simulation device being connected through a communication network, and a USB transmission method executed by the USB transmission system. The host simulation device performs a connection sequence defined by USB with a USB device when the USB device is connected, the host simulation device transmits device information acquired by the connection sequence to the device simulation device, and the device simulation device simulates the USB device on the basis of the device information acquired from the host simulation device, performs the connection sequence with a USB host, and is connected to the USB host.

公开(公告)号：US20240292065A1

公开(公告)日：2024-08-29

申请号：US18564541

申请日：2021-06-21

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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

IPC: H04N21/6371 ,  H04N21/6379

CPC classification number: H04N21/6371 ,  H04N21/6379

Abstract: An object of the present disclosure is to enable low-delay video transmission in applications requiring video transmission with low delay even when the network is congested.
The present disclosure relates to a device which acquires a status of an application using video transmission; selects an encoding scheme and a decoding scheme of a video signal generated by the application according to the status of the application; and secures resources of a data transmission network that transmits the video signal according to the selection result.