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Hiroshi Furukawa

Hiroshi Furukawa, Fukuoka JP

Patent application number	Description	Published
20100067365	TRANSMISSION SYSTEM, TRANSMISSION METHOD, TRANSMITTER, RECEIVER, DECODING METHOD, AND DECODER - A transmission system capable of obtaining an effect of orthogonality among time block codes and an effect of path diversity on a distorted channel is provided. In the transmission system including: a transmitter device transmitting an information signal S[n] multiplied by a code, the code being a time block code constituted by a plurality of time series symbols, the transmitter device multiplying the information signal by a plurality of the time block codes, respectively, multiplexing multiplication results on a time axis and transmitting multiplexed signals; and a receiver device including a reception filter, if an impulse response matrix of a channel is a matrix H, a characteristic of the reception filter is set to be represented by a complex conjugate transpose matrix H	03-18-2010
20110090835	NETWORK SYSTEM, NODE,PACKET FORWARDING METHOD, PROGRAM, AND RECORDING MEDIUM - There are proposed: a network system capable of realizing packet forwarding higher in packet forwarding efficiency than in conventional Intermittent Periodic Transmit (IPT) using omni-directional antennas; and the like. Directional antennas are applied to the IPT, and each of slave nodes waits for reception of downlink packets by a directional antenna for receiving the downlink packets in a reception waiting state therefor. Moreover, the downlink packets are treated like polling control signals, and uplink packets are transmitted at a reception time of the downlink packets, whereby a hidden node problem and a carrier sensing problem can be avoided. Furthermore, in accordance with routing protocol in which each of nodes changes directivity randomly by a route formation process, it becomes possible to form a more suitable route.	04-21-2011
20110110233	NETWORK SYSTEM, NODE, PACKET FORWARDING METHOD, PROGRAM, AND RECORDING MEDIUM - There is proposed a network system and the like achieving a packet relay transmission with high relay transmission efficiency according to Intermittent Periodic Transmit method (IPT). In order to achieve Intermittent Periodic Transmit in a mesh cluster, a communication control unit of a core node selects one of a plurality of communication units according to downlink priority and causes the selected communication unit to transmit a packet with a periodic interval. In order to transmit a packet from the core node to another slave node, a communication control unit of a slave node selects one of the communication units according to downlink priority, and in order to transmit a packet from a slave node to the core node, the communication control unit of the slave node selects one of the communication units according to uplink priority. Then, the communication control unit causes the selected communication unit to transmit the packet.	05-12-2011

Hiroshi Furukawa, Sakura-Shi JP

Patent application number	Description	Published
20110079930	CONNECTION METHOD, CONNECTION TOOL, AND CONNECTION JIG FOR OPTICAL FIBER - A method of butting and connecting a first optical fiber and a second optical fiber in an optical connector comprises placing said optical connector that holds said first optical fiber in wherein an optical fiber connection tool; mounting said optical fiber holder on a holder mounting base of a front end bevel processing tool; processing a front end face of said second optical fiber such that said front end face of said second optical fiber is beveled relative to the surface perpendicular to the optical fiber axis direction; transferring said optical fiber holder to said holder support base; and moving said optical fiber holder toward said optical connector along said guide part, and butting and connecting the beveled front end face of said second optical fiber to the front end face of said first optical fiber such that their bevel directions are aligned.	04-07-2011

Hiroshi Furukawa, Yokohama JP

Patent application number	Description	Published
20100332795	COMPUTER SYSTEM INCLUDING RECONFIGURABLE ARITHMETIC DEVICE AND RECONFIGURABLE ARITHMETIC DEVICE - A computer system includes a central processing unit, a random-access-memory interface, a random-access memory in which addresses are allocated in an address space of the random-access-memory interface and a reconfigurable arithmetic device whose arithmetic function is capable of being dynamically changed in accordance with configuration data. The reconfigurable arithmetic device includes input terminals, output terminals, a plurality of processor elements that perform individual arithmetic processes in synchronization with a clock, an inter-processor-element network which connects the input terminals and the output terminals to input ports and output ports of the plurality of processor elements, a random-access memory built into the reconfigurable arithmetic device and a control unit that sets the plurality of processor elements and the inter-processor-element network.	12-30-2010

Hiroshi Furukawa, Kawasaki JP

Patent application number	Description	Published
20080205582	PROCESSING ELEMENT AND RECONFIGURABLE CIRCUIT INCLUDING THE SAME - A processing element includes a shift register including n stages of registers mutually connected in series. Data held among the n stages of registers is rotated in synchronization with a clock signal. A number-of-stages determining circuit determines the number of stages to be used among the n stages of registers. An output terminal of the register in the last stage connects to an input terminal of the register in the first stage.	08-28-2008
20080208940	RECONFIGURABLE CIRCUIT - A reconfigurable circuit including a multiplier for multiplying a value, an accumulator for cumulatively adding said multiplied value and a round-off processing unit for rounding off said cumulatively added value; wherein said multiplier, said accumulator and said round-off processing unit are disposed within a single processing element and said accumulator provides an output at a timing according to a control signal.	08-28-2008
20090271461	SEMICONDUCTOR INTEGRATED CIRCUIT - There is provided a semiconductor integrated circuit including: a plurality of first logic blocks which are reconfigurable, the plurality of first logic blocks inputting data of a first bit width and performing computation; a first network connecting the plurality of first logic blocks in a dynamically reconfigurable manner; a plurality of second logic blocks inputting data of a second bit width different from the first bit width and performing computation; a second network connected to outputs of the plurality of second logic blocks; and a third network connecting a carry bit output of a computing unit included in the first logic block to an input of a computing unit included in the second logic block in a dynamically reconfigurable manner.	10-29-2009

Hiroshi Furukawa, Sagamihara JP

Patent application number	Description	Published
20090172144	ID COLLECTION AND MANAGEMENT APPARATUS, METHOD AND PROGRAM OF COMPUTER - An ID collection and management apparatus which manages identifiers of computers in a computer system including said computers and a storage system which provides said computers with a storage volume, including: a first ID acquisition unit which acquires first IDs which are IDs of a data port for said computers to transmit/receive data with said storage volume; a second ID acquisition unit which acquires second IDs to be recognized as the IDs of said computers by said storage system; and an ID management unit which manages said first IDs and said second IDs in a corresponding manner for each of said computers; wherein a first communication protocol for communication with said computers is different from a second communication protocol for communication with said storage system, wherein the first IDs are based on requirements of the first communication protocol, and the second IDs are based on requirements of the second communication protocol, such that the first IDs and second IDs differ from each other.	07-02-2009

Hiroshi Furukawa, Tokyo JP

Patent application number	Description	Published
20080288825	STORAGE SUBSYSTEM, STORAGE SYSTEM, AND COMMUNICATION CONTROL METHOD - In a storage subsystem which is connected to an IP network, by excluding an improper packet, security is heightened, and a performance of communication to a logical unit of storage subsystem is maintained and secured. In the storage subsystem, a function which carries out filtering of a packet other than an iSCSI packet is provided. With respect to only the packet passed through the function, its accessibility to the logical unit is filtered. Also, traffic of all received packets, and a traffic lob of a packet judged to be discarded by the above filtering is recorded. By using this information, controlling such as a cut-off process of improper communication, QoS securement for normal communication and so on, are carried out.	11-20-2008
20110130145	Transmission Power Control Method and System - A transmission power control technique allowing stable and reliable signal transmission in soft handover is disclosed. Each of the base stations involved in soft handover measures an amount of loss of the base station selection signal. When the amount of loss of the base station selection signal exceeds a threshold, the transmission power of the downlink signal is not set to the minimum level but to the normally controlled level. Further, a transmission power update timing of each base station is determined so that the downlink signal received at the mobile station changes in transmission power at a predetermined timing synchronized with that of other base stations.	06-02-2011
20110157641	IMAGE FORMING APPARATUS AND IMAGE FORMING SYSTEM - In an image forming system configured with image forming apparatuses and an administration server connected with the image forming apparatuses thereof via Internet, the image forming unit, mounted at the image forming section in a detachable manner, stores unit information which includes identification data and information of times of use. An operation section creates unit replacing permission information to permit the image forming unit to be dismounted from the image forming section. A control section receives the unit replacing permission information and reads out the unit information. The communication section transmits the unit information to the administration server. Whereby, the administration server can recognize the image forming unit dismounted from the image forming section and the times of used of the image forming unit just before dismounting, therefore the burden of the service engineer can be reduced.	06-30-2011
20110194128	IMAGE FORMING APPARATUS AND COUNTING METHOD FOR IMAGE FORMING APPARATUS - An image forming apparatus, including: an image forming unit to perform an image formation on paper; a storage unit to store a printing rate coefficient corresponding to one of printing rate levels, the printing rate levels being a plurality of levels into which a printing rate is divided, the printing rate coefficient being stored for each of the printing rate levels; a coefficient changing operation section for changing a printing rate coefficient for each of the printing rate levels; and a control unit to calculate a printing rate on each page of the paper on which the image formation is performed, to read a printing rate coefficient, corresponding to one of the printing rate levels to which the calculated printing rate belongs, from the storage unit, and to add up the read printing rate coefficient as a count coefficient.	08-11-2011

Hiroshi Furukawa, Kanagawa JP

Patent application number	Description	Published
20110292091	DISPLAY UNIT - A display unit includes: a display section having a plurality of light-emitting devices arranged in a straight line; a driving section supplying a display driving signal for controlling the luminance of each of the light-emitting devices; and a display control section connected to the driving section for supplying the driving section with either a first display control signal for controlling the luminance of the light-emitting devices to display a preset display pattern according to an operation control signal from a controller or a second display control signal for controlling the luminance of the light-emitting devices in synchronism with the level of an audio signal, wherein the first display control signal is generated based on a wave function.	12-01-2011