Olympus Corporation

Tdk Corporation

Nec Corporation

Olympus Coproration

Olympus Medical Systems Corporation

Yasuhiro Hasegawa

Kiyoshi Toyoda

Tetsuyuki Takahashi

Noriyuki Ito

Shinya Kawasaki

Yoshiaki Tanaka

Shunsuke Suzuki

Takamitsu Sakamoto

Kazuyuki Shibuya

Takahisa Endo

Koichi Otani

Soji Koide

Shingo Miyata

Akihiko Sakamoto

Hideo Okano

Katsuya Kanakubo

Manabu Ishizeki

Hirotaka Gomi

Isamu Toba

Mitsuharu Isobe

Hiroshi Fumoto

Hiroaki Funada

Takeshi Yamana

Makoto Terasawa

A reception device includes a wireless communicator, a memory, and one or more processors. The processors identify a retransmission candidate of image data on the basis of a sequence number recorded on the memory. The processors calculate an upper limit retransmission number on the basis of a physical rate and a communication rate recorded on the memory. The processors set an allowable retransmission number that is less than or equal to the upper limit retransmission number. The processors transmit a retransmission request for requesting retransmission of as many of the retransmission candidates as the allowable retransmission number to the transmission device in a blanking period by using the wireless communicator when the number of the retransmission candidates identified through the identification processing exceeds the allowable retransmission number.

Reception device, communication system, and recording medium

An image transfer system including an imaging terminal and a display terminal. A processor included in one terminal of the imaging terminal and the display terminal is programmed to execute a communication delay time calculation function of generating a first measurement signal in synchronization with the imaging period and transmitting the first measurement signal to the other terminal, receiving a second measurement signal in accordance with the first measurement signal transmitted from the other terminal, and calculating a communication delay time according to a transmission timing of the first measurement signal, a reception timing of the second measurement signal, and elapsed time data included in the second measurement signal and indicating an elapsed time from a reception timing of the first measurement signal to a transmission timing of the second measurement signal in the other terminal.

Image transfer system, imaging terminal, display terminal, and adjustment method

An image transmission system, has an imaging terminal configured to transmit image data at a cycle of imaging timing; and a display terminal configured to receive the image data and display the image data at a cycle of display timing. The image transmission system has functions of calculating communication delay time, estimating accuracy after adjusting a cycle of the imaging timing or the display timing, determining whether to perform an adjustment of the imaging timing or the display timing, and performing the adjustment of the imaging timing or the display timing which are included in either of the imaging terminal or the display terminal. The image transmission system further has a function of assisting the calculation of the communication delay time which is included in the other of the imaging terminal or the display terminal.

Image transmission system, imaging terminal, display terminal, adjustment method, adjustment assistance method, and non-transitory computer-readable recording medium storing program

In a wireless communication terminal, a controller wirelessly receives communication channel information from a first terminal by using a communicator. The communication channel information transmitted from the first terminal to the wireless communication terminal includes first information and second information. The communication channel information transmitted from the second terminal to the first terminal includes the second information. The first information represents a communication channel used for wireless communication by the first terminal. The second information represents a communication channel used for wireless communication by the second terminal. The controller determines a communication channel used for wireless communication by the wireless communication terminal on the basis of the communication channel information.

Wireless communication terminal, wireless communication method, and recording medium

A controller of a wireless communication terminal wirelessly receives second communication channel information from a second wireless communication terminal using a communicator. The controller wirelessly transmits first communication channel information and the second communication channel information to a third wireless communication terminal using the communicator. The controller wirelessly receives third communication channel information from the third wireless communication terminal using the communicator. The controller wirelessly transmits the first communication channel information and the third communication channel information to the second wireless communication terminal using the communicator.

A synchronization signal generation function of an image transmitter is configured to generate an imaging synchronization signal. One or more processors of the image transmitter cause an imager of the image transmitter to perform new imaging every time the imaging synchronization signal is generated and cause communication data corresponding to captured image data output from the imager to be transmitted from a communicator of the image transmitter to an image receiver by radio waves. A synchronization signal generation function of the image receiver is configured to generate a display synchronization signal. One or more processors of the image receiver is configured to generate a display image corresponding to the captured image data from the communication data received by radio waves in a communicator of the image receiver and cause a monitor of the image receiver to display a newly generated display image every time the display synchronization signal is generated.

Image transfer system, image receiver, image transmitter, image transfer method, image reception method, image transmission method, and program

A compressed image data transmitting device includes a compression unit dividedly reading captured image data from an image capturing element a plurality of times and performing a compression process on the captured image data to generate compressed image data; a determining unit determining whether a compressed image data occupancy ratio is equal to or larger than a predetermined threshold value; and a control unit instructing the compression unit to stop reading the captured image data when the compressed image data occupancy ratio is equal to or larger than the predetermined threshold value. When the captured image data which has not been read from the compression unit is present in the image capturing element, the control unit instructs the image capturing element not to perform the image capturing, and subsequently instructs the image capturing element to perform the image capturing operation after the above-mentioned captured image data is no longer present.

Compressed image data transmitting device, compressed image data transmitting and receiving system, compressed image data transmitting method, and non-transitory medium saving program

A wireless communication terminal has a plurality of communicators, a radar detection circuit, a channel use confirmation circuit, a channel information acquisition circuit, a channel information notification circuit, a channel determination circuit, and a channel setting circuit. First communication channel information indicates a data communication channel set in a communicator of a first peripheral terminal. Second communication channel information indicates a monitoring communication channel set in the communicator of the first peripheral terminal or a communication channel confirmed to be usable by the channel use confirmation circuit of the first peripheral terminal. The channel determination circuit determines a communication channel different from any of a first communication channel indicated by the first communication channel information and a second communication channel indicated by the second communication channel information as the data communication channel.

Wireless communication terminal, wireless communication system, wireless communication method, and recording medium

An operation device includes an operation unit, a command generation unit configured to generate an operation command for an imaging device provided in the operation unit, a wireless communication unit configured to transmit the operation command to the imaging device, and receive image data transmitted from the imaging device, based on a QoS representing a priority of transmission/reception, and a QoS setting unit configured to set a QoS of a priority command to a value which is higher than a QoS of the image data when the operation command generated by the command generation unit is the priority command having a higher transmission priority than the image data received by the wireless communication unit.

Operation device, imaging device, and remote imaging system

A wireless communication terminal, in which a packet for requesting pairing in a data link layer is defined as a pairing request packet, including a wireless communication unit that performs wireless communication with another terminal, a storage device that stores information, a storage control unit that stores first identification data included in a first pairing request packet in the storage device when the wireless communication unit receives the first pairing request packet including the first identification data, a determination section that determines whether the first identification data stored in the storage device and second identification data included in a second pairing request packet satisfy a condition decided in advance when the wireless communication unit receives the second pairing request packet including the second identification data after the first pairing request packet is received.

Wireless communication terminal, wireless communication system, wireless communication method, and computer program

A wireless communication terminal may include a first interface that receives urgency data indicating urgency of an event detected by an implantable medical device and being transmitted from the implantable medical device using a first wireless communication protocol, and detailed data indicating details of the event and having a greater data size than the urgency data and being transmitted from the implantable medical device using a second wireless communication protocol, a second interface that transmits the detailed data to an external device using the second wireless communication protocol, a display unit that displays information, and a control unit that performs control to cause the display unit to display summary information based on the urgency of the event, and the second interface to transmit the detailed data received by the first interface to the external device based on the urgency data received by the first interface.

Wireless communication terminal

This wireless communication terminal can reduce power consumption required for channel change, and a channel information output unit detects communication channel information included in information represented by a signal received through an antenna and outputs the communication channel information. A wireless communication unit has a first operation mode and a second operation mode having relatively higher operational power consumption than the first operation mode, and transmits communication data to an external terminal through the antenna using a communication channel represented by the communication channel information output by the channel information output unit when the wireless communication module operates in the second operation mode.

A wireless communication terminal may include a power supply unit that supplies direct current (DC) power, a wireless communication antenna, a wireless communication module that transmits communication data to an external terminal through the wireless communication antenna, an activation signal output unit that converts an electromagnetic wave received through the wireless communication antenna into DC power, and generates and outputs an activation signal if the converted DC power is greater than or equal to a predetermined power value, and a control unit that performs control such that the DC power is supplied from the power supply unit to the wireless communication module if the activation signal is output from the activation signal output unit.

Disclosed is a wireless terminal for performing independent distributed-type wireless communication with a portable wireless terminal. The wireless terminal is provided with: a channel setting section for setting a channel on which wireless communication with the portable wireless terminal is performed; a trigger receiving section for receiving a trigger; a free channel search section for searching for a free channel in response to the trigger received, and for delivering a signal, which changes the set channel in accordance with the search result, to the channel setting section; and a transmission section for transmitting to the portable wireless terminal a signal which reports the change.

Portable wireless terminal, wireless terminal, wireless communication system, and wireless communication method

A wireless terminal may include a sensor unit that generates data, a wireless communication unit that wirelessly transmits the data, a main power supply unit that supplies power to the sensor unit and the wireless communication unit, a determination unit that determines a level of transmission urgency of wireless transmission of the data; and a control unit that controls the wireless communication unit to wirelessly transmit the data, the control unit executing control to inhibit the wireless communication unit from using power supplied from the main power supply unit when causing the wireless communication unit to wirelessly transmit the data of which the transmission urgency is determined to be low by the determination unit.

Growing community of inventors

Hanno, Japan

Yasuhiro Hasegawa