Abstract:
PROBLEM TO BE SOLVED: To provide an antenna array control method capable of automatically, quickly, and accurately finding a radiation pattern preferable for communication with a client terminal, and an access point using the same.SOLUTION: There is provided an antenna array control method and an access point using the same. The antenna array control method comprises the steps of: selecting at least one packet as at least one detection packet (packet) per detection periodic interval; transferring a detection packet using one radiation pattern among a plurality of radiation patterns to be detected in an antenna array; calculating a packet error rate in all the radiation patterns to be detected; and selecting a radiation pattern having the lowest packet error rate from among all the radiation patterns as a radiation pattern preferable for the antenna array.
Abstract:
PROBLEM TO BE SOLVED: To provide an antenna array control method capable of automatically, quickly, and accurately finding a radiation pattern preferable for communication with a client terminal, and an access point using the same.SOLUTION: An antenna array control method comprises the steps of: selecting a packet per detection periodic interval; transferring a detection packet using a radiation pattern; selecting a radiation pattern having the lowest packet error rate; acquiring a preliminary radiation pattern set on the basis of the current probability that each radiation pattern becomes a preferable radiation pattern after a detection period ends; acquiring change probabilities of all radiation patterns in the preliminary radiation pattern set; acquiring a target pattern set on the basis of these change probabilities, a set of data indicating a movement change level and a movement change tendency of a client terminal, and the preliminary radiation pattern set; and adjusting a detection period and a detection radiation pattern set according to whether the target pattern set is equal to the detection radiation pattern set.
Abstract:
PROBLEM TO BE SOLVED: To reduce power consumption of an apparatus without changing a circuit configuration or a component.SOLUTION: A first power supply module 10 outputs a first voltage Vosufficient to start a relay 210. A second power supply module 20 outputs a second voltage Vothat is a voltage of not more than the first voltage Voand that is a voltage for keeping a starting state of the relay 210 as a starting state of the relay 210. A control module 40 controls the first power supply module 10 or the second power supply module 20 through a switching circuit 30 so as to be connected with the relay 210.
Abstract:
PROBLEM TO BE SOLVED: To provide a docking device with a telephone exchange function by which a user can utilize a mobile phone without holding it in a house or an office or the like.SOLUTION: A docking device 1 with a telephone exchange function includes: a docking base 11 provided so as to mount a mobile phone 2 connectably and removably; a telephone communication interface 12 provided to be coupled to a fixed-line telephone device 3 and to receive a dialing signal therefrom; a processor 13 connected to the docking base 11 to receive an incoming call signal from the mobile phone 2 via the docking base 11; and an exchange module 14 connected to the processor 13 to receive the incoming call signal, and connected to the telephone communication interface 12 to receive the dialing signal.
Abstract:
PROBLEM TO BE SOLVED: To provide a controller used in a resonant DC/DC converter and actuated in an optimum operation frequency, in other words, in a resonant frequency under a different output load or input condition. SOLUTION: The controller (3) is adapted for controlling a switch of a resonant direct current/direct current converter (2) , and includes: a pulse width modulation controlling unit (31) for detecting an output voltage (Vo) of the resonant direct current/direct current converter (2), and for generating a pulse width modulation signal according to the output voltage (Vo) detected thereby; a fixed frequency signal generating unit (32) for generating a fixed frequency signal; and a logic synthesizing unit (33) for synthesizing the pulse width modulation signal and the fixed frequency signal so as to generate a driving signal that is adapted to drive the switch of the resonant direct current/direct current converter (2). COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a power supplying device which is efficient and inexpensive with simple circuits and capable of adjusting an output voltage. SOLUTION: The power supplying device 3 includes: an output transformer 3 for generating first intermediate voltages V o11 , V o21 from an input voltage V in ; a voltage adjusting transformer 34; a first rectifying-and-filtering circuit 32 for generating a first output voltage V o1 from the first intermediate voltage V o11 obtained from the first output coil 312; the primary coil 341 connected in parallel to the first output coil 312; the secondary coil 342 connected in series to the second output coil 313 and coupled to the primary coil 341 for generating a second intermediate voltage V o22 from the first intermediate voltage V o11 ; and a second rectifying-and-filtering circuit 33 for generating a second output voltage V o2 from a combined voltage combining the second intermediate voltage V o22 obtained from the secondary coil 342 with the first intermediate voltage V o21 obtained from the second output coil 313. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a casing for an electronic apparatus, whose structure is simple and cost is reduced and convenience of assembly and disassembly is improved. SOLUTION: The casing for the electronic apparatus includes a first cover having at least one wedging hook, a second cover having at least one wedging structure that matches the at least one wedging hook, and a third cover having at least one projecting block. The at least one projecting block is stuck to the side face of the prescribed at least one wedging hook in the at least one corresponding wedging structure and is connected with the at least one wedging structure. COPYRIGHT: (C)2009,JPO&INPIT