Kisaka, JP
Daisuke Kisaka, Tokyo JP
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20150210222 | BICYCLE-FORK SUPPORT DEVICE - A bicycle-fork support device configured to hold: a conventional fork, allowing insertion of a quick-release-skewer support shaft, in a lower end portion of the fork of a bicycle; a through-axle fork where a through-axle insertion hole for securing a through-axle hub formed in a lower end portion of the through-axle fork, and configured to deal with outer diameters of through-axle forks. The support-fork switching unit includes: a support-device main body where a hollow portion is formed; end portions formed in right and left end portions of the hollow portion; a conventional-fork-use supporting body including, a contacting portion formed with an internal shape that fits the support shaft; a through-axle-fork-use supporting body including, a contacting portion formed with an internal shape that fits the through axle; and a unit for removably mounting any of the supporting bodies on the right and left end portions. | 07-30-2015 |
Hiroaki Kisaka, Kawasaki-Shi JP
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20110166371 | GENETICALLY MODIFIED PLANT CAPABLE OF BIOSYNTHESIZING CAPSINOID - The present invention provides a genetically modified plant that biosynthesizes an increased amount of capsinoids, a method of producing the genetically modified plant, and a production method of capsinoids from the genetically modified plant. More particularly, the present invention provides a genetically modified plant capable of producing capsinoids, which shows a decreased expression or activity of an enzyme that catalyzes an amino group conversion reaction from vanillin to vanillylamine as compared to wild strains, and the like. As a method of suppressing expression or activity of an enzyme, an introduction of DNA encoding an antisense RNA, iRNA, ribozyme or dominant-negative mutant for the target gene, a destruction of the gene by a knockout method, mutagen treatment or transposon insertion, an introduction of a gene encoding an antibody against the enzyme and the like can be mentioned. | 07-07-2011 |
Masashi Kisaka, Kanagawa JP
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20080259491 | Magnetic disk drive - Embodiments of the present invention help to provide a magnetic disk drive that is capable of reducing a time period necessary for positioning a magnetic head when positioning the magnetic head by use of a dual-stage actuator. According to one embodiment, a main control circuit of a magnetic head device selects one of a seek mode and a positioning mode. The seek mode is to set a coarse adjustment control system to be a stable system by not causing control of a piezoelectric actuator to be performed by a fine adjustment control circuit. The positioning mode is to set the coarse adjustment control system to be an unstable system and setting a total control system inclusive of the coarse adjustment control system and a fine adjustment control system to be the stable system by causing the control of the piezoelectric actuator to be performed by the fine adjustment control circuit. Thereby the main control circuit causes the control system to operate. | 10-23-2008 |
20080297942 | Drive unit - Embodiments in accordance with the present invention provide a drive unit that is capable of satisfactorily performing the positioning control with disturbance components included in a position error signal being effectively controlled. According to one embodiment, an error signal generator of a drive unit generates a position error signal (PES) on the basis of servo data read out from a magnetic disk. On the assumption that a frequency of a periodic variation component included in the PES is a target frequency, if a target frequency deviates from an effective frequency range of a digital filter, a downsampler down-samples the PES, and then supplies the PES to the digital filter so that the effective frequency range is shifted. As a result, within the shifted effective frequency range, a setting changing unit can control a setting frequency of the digital filter so that the setting frequency follows the target frequency. Therefore, it is possible to effectively reduce a signal component of the target frequency (a periodic variation component included in the PES). | 12-04-2008 |
20090086362 | Recording disk and disk drive - Embodiments of the present invention provide a recording disk capable of curtailing the amount of servo data to be stored thereon, and a disk drive. According to one embodiment, servo data area sets each of a first servo data area and plural second servo data areas arranged in that order in a read direction HR are arranged successively on each of tracks of a magnetic disk. Stored in a second sector data section included in the second servo data area is data representing a distance in the read direction HR from the position of the first servo data area to that of the same second servo data area. The amount of data stored in the second sector data section is less than that of data stored in a first sector data section included in the first servo data area. | 04-02-2009 |
20090116138 | Disk drive and controlling method thereof - Embodiments of the present invention provide a disk drive capable of appropriately measuring non-linearity in a head position control system, and a control method therefor. According to one embodiment, a magnetic disk drive inputs a reference signal S | 05-07-2009 |
20090296265 | HARD-DISK DRIVE - A hard-disk drive (HDD). The HDD includes a main control circuit. The main control circuit includes a frequency-hunting peak filter. The frequency-hunting peak filter includes a peak filter wherein a gain at a center frequency becomes finite and a reciprocal of the transfer function is represented by z/F | 12-03-2009 |
Yoshiaki Kisaka, Yokohama-Shi JP
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20110262136 | OPTICAL DIGITAL TRANSMISSION SYSTEM - An optical digital transmission system of the present invention newly defines one second negative stuff byte in an overhead area for accommodation of the client signals with multiplexing into the OTU frame, newly defines one third positive stuff byte in a corresponding tributary slot in a payload area for accommodation of client signals with multiplexing, newly defines stuff control bits that is used for decision of the use of the second negative stuff byte and the third positive stuff byte in three different places in the overhead area for client signal accommodation with multiplexing, performs control by using the newly defined stuff control bits when accommodation of the client signal with the third positive stuff byte or the second negative stuff byte is required, and performs stuff control without using the newly defined stuff control bits when accommodation of the client signal by the third positive stuff byte and the second negative stuff byte is not required. | 10-27-2011 |
Yoshiaki Kisaka, Yokosuka-Shi JP
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20150333838 | OPTICAL RECEIVING DEVICE AND PHASE CYCLE REDUCTION METHOD - An optical receiving device receives an optical signal that has been modulated by means of phase modulation or quadrature amplitude modulation, converts the received optical signal into an electrical signal using coherent detection, and performs phase compensation on the converted received signal, and includes: a carrier phase estimation unit that estimates carrier phase errors in a received symbol string obtained from the received signal; a gain adjustment unit that performs gain adjustment on symbols input into the carrier phase adjustment unit; a phase cycle slip reduction unit that, by performing statistical processing on an output from the carrier phase estimation unit, detects general noise that causes a phase cycle slip, and reduces the phase cycle slip; and a phase compensation circuit that compensates carrier phase errors contained in the received signal using an output from the carrier phase estimation unit. | 11-19-2015 |
20150341138 | COHERENT COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND TRANSMISSION METHOD - The estimation of an amount of chromatic dispersion using a training signal sequence is possible. A transmission method includes: a training signal sequence generation step of generating, as training signal sequences, a plurality of signal sequences having power concentrated in a plurality of frequency bands, the power concentrated at different frequency bands; a training signal sequence selection step of selecting at least one training signal sequence from among the plurality of training signal sequences generated in the training signal sequence generation step, a signal multiplexing step of generating a signal sequence obtained by time-division multiplexing the training signal sequence selected in the training signal sequence selection step with a transmission data sequence, and an electrical-to-optical conversion step of transmitting the signal sequence generated in the signal multiplexing step as an optical signal. | 11-26-2015 |
20150372766 | OPTICAL TRANSMISSION SYSTEM, PHASE COMPENSATION METHOD, AND OPTICAL RECEPTION APPARATUS - An increase in circuit scale is suppressed and a phase variation caused in a transmission path or the like is compensated for. An optical transmission system includes: a pilot symbol detection unit which detects a plurality of pilot symbols intermittently inserted into a received complex electric field signal that is obtained through coherent detection for a received optical signal; an error signal computation unit which calculates a complex electric field error signal indicating a phase variation at each pilot symbol based on the pilot symbols detected by the pilot symbol detection unit and a predetermined reference symbol; a compensation electric field signal generation unit which estimates a phase variation between the pilot symbols in the received complex electric field signal using filter processing based on the complex electric field error signal calculated by the error signal computation unit; and a phase noise compensation unit which performs phase compensation for the received complex electric field signal based on the phase variation between the pilot symbols estimated by the compensation electric field signal generation unit. | 12-24-2015 |
Yoshiaki Kisaka, Kanagawa JP
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20100177785 | MULTIPLEXING TRANSMISSION SYSTEM AND MULTIPLEXING TRANSMISSION METHOD - A multiplexing transmission system for adding a management overhead to a client signal, and transparently accommodating or multiplexing the client signal to transmit it is provided. The multiplexing transmission system: accommodates a plurality of client signals of different bit rates including a client signal of a bit rate that is not an integral multiple or an integral submultiple of a bit rate of other client signal, and performs rate adjustment for a part or the whole of the plurality of client signals such that the bit rate of each client signal becomes an integral multiple or integral submultiple of the bit rate of other client signal. | 07-15-2010 |
20110063001 | SIGNAL GENERATING METHOD FOR CLOCK RECOVERY AND CLOCK RECOVERY CIRCUIT - A signal generating method and circuit for reducing jitters occurring in a recovered clock signal CK since even when multiple items of specific data are inserted in one cycle of generation period for an enable period, a deviation of an output cycle of the enable period can be eliminated. | 03-17-2011 |
Yoshiaki Kisaka, Musashino-Shi JP
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20160065326 | OPTICAL TRANSMISSION/RECEPTION SYSTEM, TRANSMITTER, RECEIVER, AND OPTICAL TRANSMISSION/RECEPTION METHOD - An optical transmission and reception system includes a transmitter and receiver. The transmitter differentially encodes control information to generate a differentially coded signal; uses the differentially coded signal to modulate a signal sequence in which electricity concentrates at a particular frequency; applies time-division multiplexing on the modulated signal sequence and a primary signal in one of two polarized wave components, and applies time-division multiplexing on the other polarized wave components and the signal sequence itself; and polarization-multiplexes the both of the time-division multiplexed polarized waves into an optical signal; and transmits the optical signal to the receiver. The receiver polarization-demultiplexes the received optical signal to generate two polarized wave signals; extracts the signal sequence in which electricity concentrates at the particular frequency from the two polarized wave signals; and applies differential detection on the extracted signal sequence to demodulate the control information. | 03-03-2016 |
Yoshiaki Kisaka, Kanagawa-Ken JP
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20090162061 | OPTICAL TRANSMISSION SYSTEM AND METHOD - An optical transmission system for performing frequency synchronization even with a client signal with low frequency accuracy, and for transmitting thereof by accommodating/multiplexing without causing a bit slip. A new overhead is added to the entire client signal, and the signal including the new overhead being stuffed is transmitted in conjunction with a plurality of stuffing bits as an optical signal wherein a data storing bit for a negative stuffing, a stuffing information notification bit, and a stuff bits inserting bit for a positive stuffing in the payload are defined in plurality as stuffing bits for adjusting clock frequencies of the client signal in this new overhead. | 06-25-2009 |
20110013690 | Signal Block Sequence Processing Method And Signal Block Sequence Processing Apparatus - The present invention provides a signal block sequence processing method. According to the method, signal block headers (Bch, Bdh) are deleted from each sequence of signal blocks (B) each composed of the signal block header indicating whether a signal block payload is a control block payload (Bc′) containing a control code is contained or a data block payload (Bd′) containing data is contained. The resultant signal blocks are formed into one group (G). Each control block payload in the group is provided with position determination information indicating the position of the control block payload in the group. The signal block payloads are rearranged in accordance with a signal block payload rearrangement rule. The rearranged signal block payloads are contained in a super-block payload (Sc), to which a super-block header (Shc) indicative of containment of control block payloads is added. The resultant super-block (S) is output. | 01-20-2011 |
Yoshiaki Kisaka, Tokyo JP
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20100080245 | DIGITAL TRANSMISSION SYSTEM AND DIGITAL TRANSMISSION METHOD - A digital transmission system includes at least a client device and a transmission device, and rate-adjusts the client signal transmitted from the client device to the transmission device before accommodating/multiplexing the signal in a frame. The transmission device includes a rate adjusting unit and a frame processing unit. The rate adjusting unit encapsulates the client signal by using a predetermined frame structure, inserts an idle pattern if necessary, and performs rate adjustment into the bit rate which can be contained in the frame. The frame processing unit accommodates/multiplexes the signal after the rate adjustment. The digital transmission system inserts a bit string of the client signal directly in a payload area of the digital frame, or accommodates and multiplexes it. Alternatively, a specific pattern is accommodated in the payload area, or accommodated and multiplexed after performing a reversible digital signal processing. | 04-01-2010 |
20140108894 | TRANSMISSION SYSTEM AND TRANSMISSION METHOD - A transmission system comprising: an error correction encoding agent which converts an input data sequence into a coded data sequence constituted of an error correction code and coded data; a data distribution agent which divides encoded data sequence from the error correction encoding agent, in a predetermined processing unit and combines the divided data sequences with a plurality of transmission routes; a data combining agent which combines signal sequences from the respective transmission routes and decodes encoded data sequence; an error correction decoding agent which applies error correction to and decodes encoded data sequence from the data combining agent and outputs the input data sequence; and an agent for configuration in which a redundancy in the error correction encoding agent and a degree of splitting of encoded data sequence in the data distribution agent are set. | 04-17-2014 |