Abstract: A communication system including a transmission device and a reception device is provided. A processor of the transmission device is configured to store image data on a transmission buffer after deleting all the stored image data in a case in which a first condition and a second condition are met. The processor is configured to store the image data without deleting the stored image data in a case in which at least one of the first condition and the second condition is not met. The first condition indicates that a second transmission-completion frame this time is after a previous first transmission-completion frame. The second condition indicates that a third transmission-completion frame is not the next frame of the transmission-completion second frame. The third transmission-completion frame is a frame of the image data to be stored after confirming the transmission-completion frame this time.

Abstract: A communication system including a transmission device and a reception device is provided. A processor of the transmission device is configured to store image data on a transmission buffer after deleting all the stored image data in a case in which a first condition and a second condition are met. The processor is configured to store the image data without deleting the stored image data in a case in which at least one of the first condition and the second condition is not met. The first condition indicates that a second transmission-completion frame this time is after a previous first transmission-completion frame. The second condition indicates that a third transmission-completion frame is not the next frame of the transmission-completion second frame. The third transmission-completion frame is a frame of the image data to be stored after confirming the transmission-completion frame this time.

Abstract: An image transmission apparatus includes an imaging device, wireless communication equipment and at least one processor. The processor determines whether the wireless communication equipment is able to complete transmission of a first frame image within a transmission period corresponding to a first imaging cycle. The processor controls the wireless communication equipment to continue transmission of the first frame image in a transmission period of a second frame image output from the imaging device in a second imaging cycle when the processor determines that the wireless communication equipment is not able to complete transmission of the first frame image.

Abstract: 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.

Abstract: 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.

Abstract: An endoscope includes an imaging unit configured to image a subject and output image data, a moving-image generation unit configured to generate moving-image data from the image data output from the imaging unit, a still-image generation unit configured to generate still-image data from the image data output from the imaging unit, a release instruction unit configured to receive an image-recording instruction from a user, a first wireless communication unit configured to sequentially change a wireless channel to transmit test data and transmit the still-image data to the reception device when the release instruction unit receives the image-recording instruction, a second wireless communication unit configured to transmit the moving-image data to the reception device using a wireless channel different from the wireless channel currently used by the first wireless communication unit, and a first setting unit configured to set a wireless channel determined from communication quality information.

Abstract: 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.

Abstract: 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.

Abstract: Provided is a hard particle powder for a sintered body, consisting of: 0.01?C?3.5 mass %, 0.5?Si?4.0 mass %, 0.1?Mn?10.0 mass %, 0.1?Ni?35.0 mass %, 0.1?Cr?40.0 mass %, 5.0?Mo?50.0 mass %, 0.1?Fe?30.0 mass %, and 0.01?REM?0.5 mass %, with a balance being Co and inevitable impurities.

Abstract: 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.

Abstract: An image transmission apparatus includes an imaging device, wireless communication equipment and at least one processor. The processor determines whether the wireless communication equipment is able to complete transmission of a first frame image within a transmission period corresponding to a first imaging cycle. The processor controls the wireless communication equipment to continue transmission of the first frame image in a transmission period of a second frame image output from the imaging device in a second imaging cycle when the processor determines that the wireless communication equipment is not able to complete transmission of the first frame image.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A wireless communication terminal includes: an antenna unit, a processing unit configured to process the video data transmitted or received through the directional antenna, and a control unit. The control unit sets the communication path as a first communication path, and causes the antenna unit to transmit or receive the video data of the one frame or the one field through the first communication path, and the control unit sets the communication path as a second communication path different from the first communication path in the same frame period or the same field period as a frame period or a field period in which the video data is transmitted or received through the first communication path, and causes the antenna unit to transmit or receive same video data as all or some of the video data transmitted or received through the first communication path, through the second communication path.

Abstract: A wireless transmission terminal wirelessly transmits data in a multicast manner to wireless receiving terminals that set whether to wirelessly transmit responses for wirelessly received data, wirelessly transmit priority information representing a priority of a reception side terminal, and serve as any one of response-enabled terminals for which wireless transmission of the responses is enabled and response-disabled terminals for which wireless transmission of the responses is disabled. The wireless transmission terminal includes: a wireless communication unit; a storage unit; and a control unit configured to store the priority information in the storage unit in correlation with identification information for identifying the wireless receiving terminal having wirelessly transmitted a connection request for receiving data wirelessly transmitted in a multicast manner when the connection request and the priority information have been wirelessly received in the wireless communication unit.

Abstract: An endoscope includes an imaging unit configured to image a subject and output image data, a moving-image generation unit configured to generate moving-image data from the image data output from the imaging unit, a still-image generation unit configured to generate still-image data from the image data output from the imaging unit, a release instruction unit configured to receive an image-recording instruction from a user, a first wireless communication unit configured to sequentially change a wireless channel to transmit test data and transmit the still-image data to the reception device when the release instruction unit receives the image-recording instruction, a second wireless communication unit configured to transmit the moving-image data to the reception device using a wireless channel different from the wireless channel currently used by the first wireless communication unit, and a first setting unit configured to set a wireless channel determined from communication quality information.

Abstract: A display control section causes a display section to display an image corresponding to imaging data generated by an imaging element before the wireless reception of imaging data which is wirelessly transmitted from a camera is started, and causes the display section to display an image corresponding to imaging data which is wirelessly received after the wireless reception of the imaging data which is wirelessly transmitted from the camera is started. A parameter generating section generates imaging parameters when an instruction for the imaging parameters is input in a state where the image corresponding to the imaging data generated by the imaging element is displayed on the display section. A communication control section causes a wireless communication circuit section to wirelessly transmit the imaging parameters generated by the parameter generating section to the camera, and to wirelessly receive the imaging data wirelessly transmitted from the camera.

Abstract: According to one embodiment, an apparatus includes a housing, two high-temperature-side refrigeration circuits and two low-temperature-side refrigeration circuits. Each of the high-temperature-side refrigeration circuits is configured to exchange heat with both of the two low-temperature-side refrigeration circuits by cascade heat exchangers. A hot-water pipe letting water or hot water through water-refrigerant heat exchangers of the high-temperature-side refrigeration circuits is provided. When the low-temperature-side refrigeration circuit conducts a defrosting operation of the evaporator, the low-temperature-side refrigeration circuits are controlled in such a way that the low-temperature-side refrigerant circuit releases heat in the cascade heat exchanger.

Abstract: A wireless terminal may include: a communication unit that transmits/receives information; a recognition unit that recognizes whether a wireless terminal having transmitted the information is an opposite attribute wireless terminal based on the information received in the communication unit, when a wireless terminal having an attribute opposite to an attribute of its own terminal between the video transmission attribute and the video reception attribute is defined as the opposite attribute wireless terminal and a wireless terminal having the instruction attribute is defined as an instruction attribute wireless terminal; and a communication control unit that controls the communication unit to transmit information on a wireless terminal recognized as the opposite attribute wireless terminal to the instruction attribute wireless terminal when the recognition unit recognizes that the wireless terminal having transmitted the information is the opposite attribute wireless terminal.