摘要:
A relay device for relaying communication information communicated between an access point and an adapter, said relay device comprises a reception means for receiving the communication information transmitted to said relay device itself; a memory means having one or more memory areas, the memory means being configured to store ID of each communication device which is a next transmission destination, in each of the memory areas; a reading means for reading route information from the communication information, said route information including information specifying the memory area containing the ID of the communication device which is the next transmission destination and indicating a route constituted by communication devices provided in a range from at least said relay device itself to a final transmission destination; a transmission destination identifying means for identifying the ID of the communication device which is the next transmission destination, based on the memory area stored in the memory means and the route information read by the reading means; and a transmission means for transmitting the communication information to the communication device identified by the transmission destination identifying means.
摘要:
There is provided a wireless communication apparatus for conducting communication between a high-order apparatus and a low-order apparatus, including a beacon reception unit and a beacon transmission unit. The beacon reception unit receives a first regular beacon signal (351) transmitted from the high-order apparatus. The beacon transmission unit transmits a second regular beacon signal (351) synchronizing a clock of the low-order apparatus to the low-order apparatus in a case where the beacon reception unit receives the first regular beacon signal (351). The beacon transmission unit transmits a temporary beacon signal (352) indicating that the clock of a local station is not able to be synchronized with a clock of the high-order apparatus, to the low-order apparatus, in a case where the beacon reception unit is not able to receive the first regular beacon signal (351).
摘要:
A wireless communication device for communicating with at least a lower-level device, the communication device comprising a beacon signal generator for generating beacon signals used for synchronizing a clock of the lower-level device, and a beacon transmitter for transmitting the beacon signals generated by the beacon signal generator to the lower-level device at regular time intervals. The beacon signal generated by the beacon signal generator include a beacon identification code, the beacon identification code is shorter in code length than a communication identification code of the own device, and at least a part of the beacon identification code includes a code generated arbitrarily by the beacon signal generator.
摘要:
In a radio communication system of the present invention, a radio master terminal and a radio relay terminal are configured to transmit beacon signals each containing relay stage number information which is information indicating the number of radio relay terminals via which communication with the radio master terminal is performed, and the radio terminal which newly participates in the radio communication system includes: a reception level measuring section for measuring reception levels of received beacon signals; a relay stage number analyzing section for obtaining relay stage number information from each of the received beacon signals; and an upper radio terminal deciding section for deciding as a connection target a radio terminal which is a transmission source of the beacon signal in which the measured reception level is determined as equal to or higher than a specified value, and the relay stage number is smallest based on the obtained relay stage number information.
摘要:
In a radio communication system of the present invention, a second radio relay terminal (221) can receive terminal calling data from a radio adapter terminal (301) in a lower layer of the just second radio relay terminal (221), after it transmits a beacon signal to the radio adapter terminal (301). The second radio relay terminal (221) can receive a beacon signal from a first radio relay terminal (211) soon after it receives the terminal calling data, and transmit the terminal calling data to the first radio relay terminal (211) just after it receives the beacon signal. Thus, it becomes possible to suppress a significant delay in relay transmission of the terminal calling data, and implement quick radio communication.
摘要:
In a radio communication device used in a radio communication system of the present invention, a radio relay terminal (201) includes a timing information analyzing section (26) which analyzes intermittent reception timing information contained in a radio signal and relay-transmits the radio signal according to intermittent awaiting of reception of a radio adapter terminal (301), and the radio adapter terminal (301) includes a timing information transmission section (24) which creates timing (intermittent reception timing information) which identifies an intermittent reception timing at which the radio adapter terminal (301) intermittently awaits reception, and transmits the radio signal to the radio access point terminal (101) via the radio relay terminal (201). Thus, an increase in electric power consumption can be suppressed with a simple configuration, and communication is enabled at a suitable timing according to the intermittent reception timing of the radio adapter terminal (301) between the radio access point terminal (101) and the radio adapter terminal (301) via the radio relay terminal (201).
摘要:
In a conventional configuration, it is necessary to install all radio terminals and search a route based on a fixed condition, which makes it difficult to provide a balance between an enlarged communication area and economic efficiency of a system. In a meter interface (150), a demodulator unit (156) demodulates installation information transmitted from a concentrator (100) on a regular basis, a connected target determiner unit (158) searches an upper terminal to be connected based on a threshold pre-stored in a memory unit (157), and control is executed such that when the obtained electric field intensity level is higher than a threshold, a concentrator connected with meter interfaces of a smallest number is connected to the meter interface, while when the obtained electric field intensity level is lower than the threshold, a concentrator having a highest electric field intensity level is connected to the meter interface.
摘要:
A meter interface which is an exemplary communication device includes a radio communication unit, a level calculator unit, and an interface processing unit, and the processing unit is configured to obtain information relating to the number of lower terminals connected to each of the upper terminals, based on the signal from the upper terminal, and determine as an upper terminal to be connected to the meter interface, an upper terminal which is smallest in the number of lower terminals connected to the meter interface, from among upper terminals in which received signal levels calculated in the level calculator unit are not lower than a predetermined threshold.
摘要:
A liquid surface imaging device includes an irradiator including a plurality of lightings, the irradiator configured to irradiate a liquid surface in a nozzle of a liquid discharge head with lights emitted from the plurality of lightings, and an imaging device configured to image the liquid surface. The plurality of lightings is arranged point-symmetrically with a center of the irradiator as a point of symmetry.
摘要:
An ink set comprises black ink having a static surface tension A and yellow ink having a static surface tension B, wherein the static surface tension A is 28.7 mN/m or more and greater than the static surface tension B, wherein the ink set is used in an image forming device including an inkjet head including a nozzle plate including a first nozzle array and a second nozzle array disposed adjacent to the first nozzle array, the first nozzle array including multiple first nozzles configured to discharge the black ink and a second nozzle array including multiple second nozzles configured to discharge the yellow ink wherein each nozzle of the multiple first nozzles and the multiple second nozzles has a cylindrical portion having a length of 25 μm or longer along an axial direction with an opening on an ink discharging side of the nozzle plate.