Olympus Corporation

Olympus Medical Systems Corporation

Olympus Coproration

Shinya Kawasaki

Kiyoshi Toyoda

Takahisa Endo

Tetsuyuki Takahashi

Takemitsu Honda

Kazuyuki Shibuya

Yasuhiro Hasegawa

Koichi Niida

Akihiko Sakamoto

A communication system includes a transmission terminal and a reception terminal. One of the transmission terminal and the reception terminal includes a processor. The processor is configured to calculate an adjustment value indicating a difference between an imaging cycle and a display cycle. The processor is configured to cause the imaging cycle and the display cycle to match each other by adjusting a signal generator on the basis of the adjustment value. A connection history in which adjustment information and identification information of a communicator are associated with each other is recorded on a recording medium. The processor is configured to adjust the signal generator on the basis of the adjustment value indicated by the adjustment information when the first communicator and the second communicator connect to each other again.

Communication system and communication method

A first communicator of a first communication device is configured to use a first wireless channel and execute first key-exchange processing at a timing at which a first key-exchange timer expires. A second communicator of the first communication device is configured to use a second wireless channel and execute second key-exchange processing at a timing at which a second key-exchange timer expires. When streaming data are transmitted by using one wireless channel of the first wireless channel and the second wireless channel and a difference between a first key-exchange timer value and a second key-exchange timer value is greater than a predetermined range, a control circuit is configured to change a wireless channel used for transmission to the other wireless channel before key-exchange processing in the one wireless channel is started.

Wireless communication device, wireless communication system, 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.

Wireless communication terminal, wireless communication method, and recording medium

An image receiving terminal includes a communicator and one or more processors. An elapsed time is a time period from a time point at which a vertical synchronization signal is generated to a time point at which a specific packet is received by the communicator. The processor sets a determination reference time on the basis of the plurality of measured elapsed times. The processor determines whether the communication channel which is used by the communicator is to be switched to another communication channel on the basis of the set determination reference time and the elapsed time measured after the determination reference time has been set. The processor controls switching of the communication channel which is used by the communicator on the basis of the result of determination of the communication channel.

Image reception terminal, image communication system, image reception method, and recording medium

An image communication system includes an image transmission apparatus and an image reception apparatus. The image transmission apparatus includes a transmission-side wireless communication unit. The image reception apparatus includes a reception-side wireless communication unit. At least one of the image transmission apparatus and the image reception apparatus includes a radar detection unit configured to execute a detection process on radio waves of radar in a communication channel that has a possibility of being used for image data communication by the transmission-side wireless communication unit and the reception-side wireless communication unit. At least one of the image transmission apparatus and the image reception apparatus includes a channel use continuation unit configured to execute channel use confirmation for confirming that the communication channel is usable by continuously monitoring the detection process by the radar detection unit for a predetermined time.

Image communication system, image reception apparatus, image transmission apparatus, image reception method, image transmission method, and recording medium

An image communication system includes an image transmission apparatus and an image reception apparatus. The image transmission apparatus includes a transmission-side wireless communication unit. The image reception apparatus includes a reception-side wireless communication unit. At least one of the image transmission apparatus and the image reception apparatus includes a radar detection unit configured to execute a detection process on radio waves of radar in a communication channel that has a possibility of being used for image data communication by the transmission-side wireless communication unit and the reception-side wireless communication unit. At least one of the image transmission apparatus and the image reception apparatus includes a channel use confirmation unit configured to execute channel use confirmation for confirming that the communication channel is usable by continuously monitoring the detection process by the radar detection unit for a predetermined time.

An image communication system includes an image transmission apparatus and an image reception apparatus. The image transmission apparatus includes a transmission-side wireless communication unit configured to transmit image data by radio waves. The image reception apparatus includes a reception-side wireless communication unit configured to receive the image data transmitted by the transmission-side wireless communication unit by radio waves. At least one of the image transmission apparatus and the image reception apparatus includes a radar detection unit configured to execute a detection process on radio waves of radar in a communication channel that has a possibility of being used for image data communication by the transmission-side wireless communication unit and the reception-side wireless communication unit.

Image communication system, image transmission apparatus, image transmission method, and recording medium

Provided is a multicast transmission terminal including: a transmission/reception unit that performs multicast transmission using a predetermined center frequency and a bandwidth, and receives acknowledgement transmitted using a center frequency different from the center frequency of the multicast transmission and a bandwidth narrower than the bandwidth of the multicast transmission; a discovery unit that transmits an inquiry packet in a broadcast manner and discovers reception terminals (destinations of the multicast transmission); an allocation unit that allocates a center frequency used when the reception terminal transmits the acknowledgement in response to the number of reception terminals discovered by the discovery unit, allocates the center frequency different from the center frequency of the multicast transmission to the reception terminal, and generates an allocation list indicating the allocation; and a notification control unit that allows the unit to transmit the allocation list in multicast manner.

Multicast transmission terminal, multicast reception terminal, multicast system, computer readable storage device, multicast transmission method, and multicast reception method

A received image displaying apparatus comprises: a wireless communication unit that wirelessly receives the frame images transmitted by the image transmitting apparatus with which the received image displaying apparatus has established a connection of wireless communication; and a displaying unit that displays the frame images, which were wirelessly received by the wireless communication unit, in an order in which the frame images were captured. At least one of the image transmitting apparatus and the received image displaying apparatus comprises: a reference sync signal generating unit that generates the reference sync signals; and a control unit that, if the wireless communication unit has received no reference sync signals for a certain time interval, controls the reference sync signal generating unit to generate reference sync signals and that further controls the wireless communication unit to wirelessly transmit the reference sync signals to the other apparatus included in the image transmitting/receiving system.

Image transmitting/receiving system, image transmitting apparatus, received image displaying apparatus, wireless control apparatus, and image transmitting/receiving method

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 includes: a wireless communication module, a power supply unit configured to perform electric power supply to the wireless communication module, a power supply control unit configured to perform power supply control of the power supply unit, a control unit configured to set parameters of a layer higher than a data link layer to parameters of the wireless communication module, an RFID module configured to store wireless communication setting information and data presence/absence information and wirelessly transmit the wireless communication setting information, and a data update unit configured to update the data presence/absence information stored in the RFID module.

Wireless communication terminal with an RFID module, wireless communication system, wireless communication method, and a device storing a program

Communication-identifier-assigned image data is transmitted via a set channel using the same as a communication identifier set for each image transmitter and a channel set in transmission. Then, a receiver which has received a plurality of image data items stores the received image data items, communication identifiers, and channels in such a manner that the received image data items are related to the communication identifiers and channels. Thumbnailed images in each image data item are displayed on one screen. When an image is selected from the thumbnailed images, an image transmitter that has transmitted the image is determined on the basis of the communication identifier and channel related to the selected image and is connected exclusively to the receiver. Images acquired from this time on are enlarged and displayed chronologically on a display section. The image transmitter and receiver constitute a wireless communication system.

Wireless communication system comprising receiver and image transmitter and wireless communication method thereof

A video transmitter includes: a video resolution acquisition unit that acquires a resolution of a video signal; a wireless communication unit wirelessly transmitting the video signal and wirelessly receiving, from a terminal wirelessly receiving a video signal wirelessly transmitted, a received radio wave intensity and a minimum reception sensitivity at a time when wirelessly receiving the video signal; and a communication rate setting unit that sets a communication rate at a time when wirelessly transmitting the video signal according to the acquired resolution of the video signal. The wireless communication unit includes a transmission output control unit that controls the wireless communication unit to wirelessly transmit the video signal at the communication rate set by the communication rate setting unit and controls a wireless transmission output of the wireless communication unit to suppress a difference between the radio wave intensity and the minimum reception sensitivity.

Video transmitter, video transmission method, and program device

A receiving device provided with: a receiving unit for receiving image data from a transmitting device with which the receiving device has established wireless communication; a display unit for displaying setting data for a different transmitting device from the aforementioned transmitting device to establish wireless communication with the receiving device and the image data; and a display control unit for controlling the display of the display unit such that, in the frames displayed before and after a frame containing the setting data, the image data is displayed in the same display region as the display region for the display unit in which the setting data is displayed.

Growing community of inventors

Tokyo, Japan

Shinya Kawasaki