Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Shinichiro Nishioka

Hiroshi Suenaga

Tadashi Ono

Tsutomu Sekibe

Yoshihide Komatsu

Isao Kato

Satoshi Senga

Yuusaku Ohta

Kohei Masuda

Hideyuki Yamada

Masayuki Toyama

Takuji Maeda

Osamu Tanaka

Yuko Tsusaka

Nobuhiko Arashin

Kozo Nishimura

An autonomous travel-type cleaner includes a housing, a drive unit for moving the housing, an incoming call detector that detects whether or not there is an incoming call to a communication terminal, a person detector that detects whether or not a person is present within a first range, an incoming call notification unit (for example, a light source and a speaker) for notifying of presence of an incoming call, and a controller. The controller controls a notification operation of the incoming call notification unit based on a detection result of the person detector and a detection result of the incoming call detector.

Autonomous travel-type cleaner and control method

A communication device for transmitting data to a plurality of radio terminals in radio communication includes: a first communication interface that performs radio communication with each of radio terminals in accordance with a first communication standard; and a controller that controls radio communication with each of the radio terminals, wherein the controller manages a modulation and coding scheme (MCS) level indicating a level of an MCS used for transmission of data for each of the radio terminals in association with a load amount indicating a communication load in the transmission of the data, wherein the controller, when detecting that the load amount is greater than a predetermined upper limit value, determines an allowable level of the MCS level corresponding to a load amount less than the upper limit value, and restricts the transmission of the data to use an MCS level equal to or higher than the allowable level.

Communication device and radio communication system

A wireless communication apparatus includes: a wireless communication unit configured to perform directional wireless communication with an external apparatus; a wireless power supply unit configured to perform wireless power supply to the external apparatus; a sector management unit configured to store a plurality of IDs each indicating a communication parameter which is set for the wireless communication unit in order to determine an antenna pattern for the wireless communication unit, and a power supply parameter which is set for the wireless power supply unit in order to determine an antenna pattern for the wireless power supply unit; and a control unit configured to control the directional wireless communication and the wireless power supply based on an ID included in the plurality of IDs.

Wireless communication apparatus and method for controlling wireless communication apparatus

Provided is an initiator apparatus that, when issuing access requests for remote access via wireless communication to a storage section that processes only one access request at a time, can easily detect timeouts with one timer irrespective of the number of access requests issued via wireless communication. In this apparatus, an access-request processor () sends one or more access requests to a target apparatus () provided with a storage section that processes only one access request at a time and receives access acknowledgments for the access requests from the target apparatus (). Until all the access requests are completed, a timeout detector () resets the timer operation and starts it again each time an access request is sent or an access acknowledgment is received, and detects a timeout when the timer operation exceeds a timeout period.

Initiator apparatus, target apparatus, communication system, timeout detection method, and timeout detection program

A plurality of networks each having a host are connected to achieve a transparent transaction between devices belonging to the different networks. A target apparatus includes a station and a host. In response to a get device handle request from an initiator apparatus, the station acquires, from the host, configuration information of a target device and relays transactions between the initiator apparatus and the target device, without requiring involvement of the host.

Station, target apparatus, initiator apparatus, communication system, and communication method

The communication method comprises transmitting a transfer command to transfer the data control, which enables execution of controlling data stored in one or more communication devices connected to at least one of the first and second master devices, from the first master device to the second master device through a first communication line, transmitting a response to the transfer command from the second master device to the first master device through the first communication line, and transmitting a confirmation notification for the response from the first master device to the second master device through the first communication line. The execution of controlling data in the first master device is stopped when the first master device has transmitted the confirmation notification, and the execution of controlling data in the second master device is enabled when the second master device has received the confirmation notification.

Master device, communication system, and communication method

Disclosed is a radio communication apparatus that avoids useless communication to another radio communication apparatus in non-line of sight when the apparatus performs radio communication with the other apparatus while receiving electric supply from the other apparatus. In this apparatus, a radio electric reception section determines whether the electric reception level from the other apparatus is equal to or greater than a first threshold. When the electric reception level is equal to or greater than the first threshold, a radio communication control section controls a radio communication section so that radio communication with the other apparatus starts. After the start of radio communication, the radio electric reception section determines whether the electric reception level is less than a second threshold. When the electric reception level is less than the second threshold, the radio communication control section controls the radio communication section so that the radio communication being performed stops.

Radio communication apparatus, radio communication system, and radio communication control method

To achieve efficient data transfer between a first network and a second network, and, in particular, to reduce processing load pertaining to address conversion, a transfer control device in the first network acquires an address of a transfer target device in the second network, and assigns the acquired address to a transfer device in the first network. When data transmitted through the first network is to be transferred to the transfer target device via the transfer device, there is no need to perform address conversion as the transfer device and the transfer target device are assigned the same address.

Transfer control device, integrated circuit thereof, transfer control method, and transfer control system

A functional device can communicate with an access apparatus through wireless communication. At least one additional device can be connected to the functional device. The functional device includes an access controller that performs an initialization process of the additional device to obtain characteristic information of the additional device from the additional device, before establishing communication between the access apparatus and the functional device, a memory that stores the obtained characteristic information, a communication unit that performs transmission and reception of data with the access apparatus, and a communication controller that transmits the characteristic information stored in the memory to the access apparatus without performing an initialization process of the additional device, upon establishment of communication with the access apparatus by the communication unit.

Functional device, access system, and communication establishing method

An objective of the present invention is to determine a function of each communication apparatus with few steps. A first communication apparatus () is capable of carrying out at least one of a function of an apparatus which receives an access thereto from a second communication apparatus (), and a function of a host which accesses the second communication apparatus (). The first communication apparatus () comprises: an access request issuing unit () which issues a request which denotes the function thereof to the second communication apparatus (); and a conflict assessment unit () which, either when the request and a request which the second communication apparatus () has issued conflict or when the request is rejected, makes the access request issuing unit () reissue a request to the second communication apparatus () which denotes another function.

Communication device, communication method, and communication program

Provided is a wireless communication apparatus wherein when a wireless communication having high directivity is performed together with another wireless communication apparatus, the user can clearly recognize a communicatable range of the wireless communication. In this apparatus, a periphery image capturing unit () captures a periphery image through the optical system in such a manner that the line-of-sight of wireless communication for establishing a wireless communication having high directivity is coincident with the optical axis of the optical system. A preview display unit () displays, in a preview window, another wireless communication apparatus image-captured as a periphery image. A communication establishing unit () establishes the wireless communication with the other wireless communication apparatus displayed in the preview window.

Wireless communication apparatus, wireless communication method, and wireless communication control program

In transmission of channel-coded serial data, early establishment of symbol synchronization between a transmitter and a receiver is achieved while reducing coding loss in transmission of valid data. In an idle period for not transmitting the valid data, a transmitting circuit selects first channel coding (e.g. 8B/10B coding) enabling early establishment of synchronization and transmits a synchronization symbol encoded using the first channel coding. In response to this, a receiving circuit establishes and maintains symbol synchronization. When the valid data is transmitted, the transmitting circuit transmits a symbol indicating a packet start position, selects second channel coding (e.g. 64B/66B coding) having less coding loss than the first channel coding, and transmits the valid data encoded using the second channel coding. Upon reception of the symbol indicating the packet start position, the receiving circuit switches to reception using the second channel coding and receives the valid data.

Transmission circuit, reception circuit, transmission method, reception method, communication system and communication method therefor

In a communications system for differential signals, a driver circuit is connected to a receiver circuit by a pair of differential signal lines. When data is not being transmitted, the differential signal lines are maintained at a predetermined electric potential, and when data is to be transferred, a differential signal is output at predetermined electric potentials. The receiver circuit switches between a power-down state and a normal state when detecting states of the electric potentials of the differential signal lines.

Driver circuit, receiver circuit, and method of controlling a communications system including the circuits

To aim to provide an interface circuit that supports both a single-ended method and a differential method as a transmission method, and one of pairs of input terminals for a differential signal is shared to input/output a single-ended signal. A differential signal receiving circuit that receives a differential signal input through the pair of shared terminals is activated when a differential signal is input to a pair of dedicated input terminals for a differential signal, which is different from the pair of shared terminals. After the differential signal receiving circuit is activated, the active state is maintained by a built-in controller. Accordingly, the activation of the differential signal receiving circuit that receives a differential signal input through the shared terminals is controlled by controlling the differential signal input through the pair of dedicated input terminals, and furthermore, the possibility that the differential signal receiving circuit becomes inactive at an unexpected timing is reduced to a low level.

Interface circuit and interface system

A communication system performs communication while switching between full-duplex communication and half-duplex communication. A slave device, which receives command packet signals requesting to write or read data from the master device, stores information in a response packet signal that specifies half-duplex communication in response to one of the received packet signals, and transmits the response packet signal to the master device, when the number of the received command packet signals has reached the maximum number of the command packet signals storable in a command signal queue.

Growing community of inventors

Osaka, Japan

Shinichiro Nishioka