Patent application number | Description | Published |
20080242321 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, AND TERMINAL APPARATUS - A base station apparatus includes a first transmission unit configured to transmit area common information common to all base station apparatuses in an area by using not less than one time slot of not less than one common time slot assigned to each of a plurality of areas including a plurality of base station apparatuses, the common time slot being assigned to adjacent areas which are different from each other, a carrier sense unit configured to perform carrier sense on a first time slot except for the common time slot, a selection unit configured to select a second time slot determined as being available by the carrier sense, and a second transmission unit configured to intermittently transmit a control signal unique to the base station apparatus in the second time slot at K (K positive integer) time slot periods. | 10-02-2008 |
20080285490 | RADIO COMMUNICATION SYSTEM, TERMINAL APPARATUS AND BASE STATION APPARATUS - A radio communication system which includes a base station apparatus and terminal apparatuses and performs TDD two-way communications using an OFDM signal including subcarriers in a downstream communication from the base station apparatus to each terminal apparatus, and an FH signal having the same frequency band as that of the subcarriers in an upstream communication from the each terminal apparatus to the base station apparatus, the each terminal apparatus estimates transmission channel characteristics of the subcarriers based on the OFDM signal received, transmits an estimation result of the estimation unit to the base station apparatus, and the base station apparatus assigns, to the each terminal apparatus, at least one of subcarriers to be used in the downstream communication of the subcarriers and a hopping pattern to be used in the upstream communication, based on the estimation result transmitted from the each terminal apparatus. | 11-20-2008 |
20090147875 | RADIO TRANSMITTER AND RADIO RECEIVER - A radio transmitter includes a unit which generates a first instruction to instruct the transmission of a first transmission signal, a unit which generates the first transmission signal based on the first instruction, a unit which generates a second instruction to instruct the transmission of a second transmission signal to be selectively multiplied by an orthogonal code, a unit which generates the second transmission signal based on the second instruction, unit which transmits the first and the second transmission signals, a unit which predicts a collision of the first and second transmission signals, and a unit which stops the first transmission signal while the collision is predicted in a case where the second transmission signal is multiplied by the orthogonal code and which stops the second transmission signal while the collision is predicted in a case where the second transmission signal is not multiplied by the orthogonal code. | 06-11-2009 |
20120063535 | TRANSMITTING APPARATUS AND RECEIVING APPARATUS - According to one embodiment, a transmitting apparatus includes a generation unit, a division unit, an imparting unit and a transmitting unit. The generation unit generates first control information in accordance with a first information format. The division unit divides the first control information into control information pieces in accordance with information format divisions into which the first information format is divided and which include respective pointer regions, each of the information format divisions having a same data length as a second information format. The imparting unit imparts, to the pointer region of each of the information format divisions, a pointer indicating a wireless communication resource used to transmit one of the control information pieces corresponding to one of the information format divisions other than the each control information format division. The transmitting unit transmits the control information pieces. | 03-15-2012 |
Patent application number | Description | Published |
20080248394 | Non-aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery including: a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; a non-aqueous electrolyte; and a porous insulating film adhered to a surface of at least one selected from the group consisting of the positive electrode and the negative electrode, the porous insulating film including an inorganic oxide filler and a film binder, wherein the ratio R of actual volume to apparent volume of the separator is not less than 0.4 and not greater than 0.7, and wherein the ratio R and a porosity P of the porous insulating film satisfy the relational formula: −0.10≦R−P≦0.30. | 10-09-2008 |
20080254369 | Non-aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery including: a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; a non-aqueous electrolyte; and a porous insulating film adhered to a surface of at least one selected from the group consisting of the positive electrode and the negative electrode, the porous insulating film including an inorganic oxide filler and a film binder, wherein the ratio R of actual volume to apparent volume of the separator is not less than 0.4 and not greater than 0.7, and wherein the ratio R and a porosity P of the porous insulating film satisfy the relational formula: −0.10≦R−P≦0.30. | 10-16-2008 |
20120321947 | LITHIUM SECONDARY BATTERY AND MANUFACTURING METHOD FOR SAME - In a lithium secondary battery provided by the present invention, a positive electrode active material is constituted by a lithium composite oxide having at least lithium, nickel, and/or cobalt as main constituent elements, a porosity of a positive electrode active material layer is 30% or more and 40% or less, and a porosity of a negative electrode active material layer is 30% or more and 45% or less. Further, a void volume ratio (Sa/Sb) between a void volume (Sa) per unit area of the positive electrode active material layer and a void volume (Sb) per unit area of the negative electrode active material layer satisfies 0.9≦(Sa/Sb)≦1.4. | 12-20-2012 |
20130004845 | LITHIUM SECONDARY BATTERY - A lithium secondary battery according to the present invention comprises a cathode and an anode | 01-03-2013 |
20130059207 | NEGATIVE ELECTRODE ACTIVE MATERIAL - As a negative electrode active material that enables steady production of batteries with excellent low-temperature performance, provided is a composite carbon comprising a low-crystalline carbon material at least partially on surfaces of particles of a high-crystalline carbonaceous substance. The negative electrode active material has a tapped density of 0.9 g/cm | 03-07-2013 |
20130065138 | METHOD FOR NEGATIVE ELECTRODE ACTIVE MATERIAL EVALUATION AND NEGATIVE ELECTRODE ACTIVE MATERIAL - Provided is a method for negative electrode active material evaluation useful for steady production of batteries having a prescribed performance level. This evaluation method comprises: (A) running microscopic Raman analysis at a wavelength of 532 nm n times on a sample of a composite carbon comprising a low-crystalline carbon material at least partially on surfaces of particles of a high-crystalline carbonaceous substance (wherein n is 20 or more); (B) with respect to a Raman spectrum obtained in each microscopic Raman analysis run, determining the ratio of its D-band intensity I | 03-14-2013 |
Patent application number | Description | Published |
20110228751 | WIRELESS COMMUNICATION APPARATUS AND SEMICONDUCTOR DEVICE - A wireless communication apparatus includes a first wireless communicator, a second wireless communicator, and a controller. The first wireless communicator transmits and receives a wireless signal according to a first communication protocol, and scans a notice signal during a predetermined scan term in a first cycle non-integer times at least one of notice signal cycles in the first communication protocol. The second wireless communicator transmits and receives the wireless signal according to a second communication protocol. The controller switches the second wireless communicator to an non-transmission state and the first wireless communicator to a reception state during the scan term. | 09-22-2011 |
20110317669 | SEMICONDUCTOR DEVICE, WIRELESS TERMINAL DEVICE, AND WIRELESS COMMUNICATION SYSTEM - According to an embodiment, a semiconductor device includes a wireless station selection unit configured to select a connection destination wireless station from among a plurality of wireless stations. The wireless station selection unit includes a power calculation processing unit, a storage unit, a table update processing unit, and a power variation range detection processing unit. The power calculation processing unit is configured to calculate power of each receiving signal from each of the wireless stations. The storage unit is configured to store a table, and the power of each receiving signal equal to or more than a predetermined threshold is recorded in the table in association with each of the wireless stations. The table update processing unit is configured to update the table at a predetermined timing interval. The power variation range detection processing unit is configured to detect a variation range of the power for each of the wireless stations with reference to the table and configured to set the wireless station in which the variation range is within a predetermined range as a priority candidate of the connection destination wireless station. | 12-29-2011 |
20130277423 | ITEM PAYMENT CHECK APPARATUS - An item payment check apparatus using a shopping basket and including a shopping basket to which an RFID tag is attached; a payment unit configured to perform payment for an item put in the shopping basket, and to record completion of payment in the RFID tag when the payment is completed; and a check unit configured to check, when the shopping basket passes through, whether completion of payment is recorded in the RFID tag, and to perform reporting when completion of payment is not recorded in the RFID tag. | 10-24-2013 |