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Fujinuma
Kazuhiro Fujinuma, Ebina-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090140787 | Phase controller apparatus and pulse pattern generator and error detector using the phase controller apparatus - A quadrature modulator divides a first signal input as a local signal into an I channel signal and a Q channel signal orthogonal to each other and outputs a second signal having a desired phase delay corresponding to direct current voltages as for the first signal by giving the direct current voltages Vi and Vq to the I channel signal and the Q channel signal, respectively. A phase comparison unit detects a phase difference θ between the first signal and the second signal. A setting unit sets the desired phase delay. A controller section controls the direct current voltages supplied to the I channel signal and the Q channel signal respectively in the quadrature modulator so that an output value corresponding to the phase difference θ detected by the phase comparison unit is equal to a value corresponding to the desired phase delay set by the setting unit, and controls the direct current voltages to be the direct current voltages Vi and Vq satisfying the relation of Vi=cos θ and Vq=sin θ. | 06-04-2009 |
| 20090279595 | WAVEFORM SHAPING DEVICE AND ERROR MEASUREMENT DEVICE - The object of the present invention is to provide a waveform shaping device and an error measurement device which can perform a waveform shaping operation with the sufficient amplitude margin, even if the mark ratio of the inputted data signal is significantly varied and the amplitude of the inputted data signal is decreased. The waveform shaping device according to the present invention comprises a voltage detector ( | 11-12-2009 |
| 20110026573 | DATA SIGNAL GENERATING APPARATUS - It is an object of the present invention to provide a data signal generating apparatus which is small in size, and can output the serial data in a desired sequence without assuming an indefinite state as well as being capable of dealing with the jitter measurement. In the data signal generating apparatus according to the present invention, synchronization means | 02-03-2011 |
Kazuhiro Fujinuma, Kanagawa JP
| Patent application number | Description | Published |
|---|---|---|
| 20090243680 | DATA SIGNAL GENERATING APPARATUS - It is an object of the present invention to provide a data signal generating apparatus which is small in size, and can output the serial data in a desired sequence without assuming an indefinite state as well as being capable of dealing with the jitter measurement. In the data signal generating apparatus according to the present invention, synchronization means | 10-01-2009 |
| 20090252270 | DATA DECISION APPARATUS AND ERROR MEASUREMENT APPARATUS - The object of the present invention is to provide a data decision apparatus and an error measurement apparatus which can set the phase of the clock to the optimum state with respect to the data signal without continuously sweeping of the phase, and can keep the state for a long time. The data decision apparatus according to the present invention comprises a delay device ( | 10-08-2009 |
Kazuhiro Fujinuma, Isehara-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090140787 | Phase controller apparatus and pulse pattern generator and error detector using the phase controller apparatus - A quadrature modulator divides a first signal input as a local signal into an I channel signal and a Q channel signal orthogonal to each other and outputs a second signal having a desired phase delay corresponding to direct current voltages as for the first signal by giving the direct current voltages Vi and Vq to the I channel signal and the Q channel signal, respectively. A phase comparison unit detects a phase difference θ between the first signal and the second signal. A setting unit sets the desired phase delay. A controller section controls the direct current voltages supplied to the I channel signal and the Q channel signal respectively in the quadrature modulator so that an output value corresponding to the phase difference θ detected by the phase comparison unit is equal to a value corresponding to the desired phase delay set by the setting unit, and controls the direct current voltages to be the direct current voltages Vi and Vq satisfying the relation of Vi=cos θ and Vq=sin θ. | 06-04-2009 |
Keiichi Fujinuma, Saitama JP
| Patent application number | Description | Published |
|---|---|---|
| 20090089593 | Recording system, information processing apparatus, storage apparatus, recording method, and program - Disclosed herein is a recording system including a storage apparatus incorporating a storage medium, and an information processing apparatus which is connectable to the storage apparatus and which holds a content to be recorded to the storage apparatus. | 04-02-2009 |
Ken Fujinuma, Machida-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20110263955 | Internal Observation Device for Object having Light Scattering Properties, Internal Body Observation Device, Endoscope for Internal Observation and Internal Observation Method - There is provided an inside observation apparatus of an endoscope and the like which can perform an inside observation for irradiating an illumination light to a minute area of a surface of an object (for example, a living tissue) having a light scattering property and detecting a back-scattered light of the illumination light, can increase a detected light amount by a simply and low cost configuration by making an area of a detection region larger than an illumination region, and can reduce a time necessary to detect an body (for example, a blood vessel) to be observed and detect a region deeper than a conventional region. | 10-27-2011 |
Yoshitaka Fujinuma US
| Patent application number | Description | Published |
|---|---|---|
| 20120027466 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device that can suitably discharge developer from the developing device by the amount of developer in the developing device increased by carrier supplemented into the developing device, including: a supply transport screw and a receiving transport screw, the rotational axes of which are mutually parallel in relation to an image support member and which are arranged in a top and bottom positional relationship, and an inclined transport screw which is arranged at an incline between one end of the supply transport screw and the other end of the receiving transport screw; supply means for supplying new carrier into a casing; and a discharge port and discharge means for discharging part of the developer housed in the casing to the outside, the discharge port being provided on the part of the casing corresponding to the upper part of the inclined transport screw. | 02-02-2012 |