Abstract: In an LSI that determines timing of DRAM refresh by a refresh timer to synchronize an external I/O signal and DRAM refresh timing with each other, a circuit configuration capable of controlling a value of the refresh timer by a CPU at arbitrary timing is employed. Alternatively, a circuit configuration capable of controlling the value of the refresh timer at arbitrary timing by an external terminal, or a circuit configuration capable of controlling the refresh timing directly from the external terminal without through the refresh timer.

Abstract: A semiconductor optical amplifier includes a semiconductor substrate; an optical waveguide that includes an active layer formed on the semiconductor substrate; and a wavelength selective reflection film that is formed on an end face where signal light is incident on the optical waveguide the wavelength selective reflection film allows transmission of the signal light, and reflects light of any wavelength other than the signal light.

Abstract: A driving method for a plasma display apparatus having address electrodes, scan electrodes and common electrodes and displaying one field of image by using subfields is provided. The driving method includes one specific subfield is arranged to be turned ON early in the one field and always turned ON at luminance level higher than input luminance level “0”, and the specific subfield has a least luminance weight and does not have resetting.

Abstract: A body-insertable apparatus system has a body insertable apparatus that is inserted into a subject and a control apparatus. The body-insertable apparatus includes a magnetic responding unit that is provided within a casing forming the body-insertable apparatus and has a magnetization direction; and a needle that is protruded and retracted with respect to a surface of the casing. The control apparatus includes a magnetic field generator that generates a magnetic field; and a control unit that causes the magnetic field generator to generate a magnetic field for changing an orientation of the magnetic responding unit based on the magnetization direction of the magnetic responding unit in the body-insertable apparatus, a position of the needle in the body-insertable apparatus, and a distal end direction of the needle, thereby changing an orientation of the entire body-insertable apparatus to enable the protruded needle to puncture a puncture target layer.

Abstract: A display apparatus driving method for a field time division type display apparatus displays grayscale by combining a plurality of subfields into which one field has been divided. Each subfield includes a resetting, an addressing, and a sustaining. At least one extra subfield is additionally provided which does not have a resetting, and which stays always ON with a luminance level higher than a prescribed input luminance level.

Abstract: A manufacturing method for an optical semiconductor device, including disposing a semiconductor element that has a polarization dependent gain or polarization dependent loss between optical waveguide modes differing in the direction of polarization, positioning a lens at one end face side of the semiconductor element based on an optical coupling loss between the lens and the semiconductor element, and repositioning the lens based on the polarization dependent gain or the polarization dependent loss of the semiconductor element.

Abstract: A capsule medical apparatus includes a needle driving unit that punctures an internal region of a subject with an injection needle and pulls out the injection needle from the internal region, a liquid injection unit that injects a liquid into the internal region through the injection needle, and a leak prevention unit that prevents the liquid that is injected into the internal region from leaking from the internal region.

Abstract: An optical integrated device includes an optical waveguide structure formed on a semiconductor substrate and including a plurality of first channel optical waveguide portions, an optical coupler portion and a second channel optical waveguide portion, a burying layer formed from a semi-insulating semiconductor material and burying the optical waveguide structure therein such that an upper portion thereof forms a flat face and a side portion thereof forms an inclined face having a predetermined angle with respect to the semiconductor substrate, and a plurality of dummy structure bodies provided over a desired region in the proximity of at least an output side of the optical coupler portion so that radiation light from the optical coupler portion is spatially separated from signal light propagating along the second channel optical waveguide portion. The plural dummy structure bodies are provided discretely so as to be buried flat by the burying layer.

Abstract: A plasma display device includes: a display panel which has a plurality of X and Y display electrodes and a plurality of address electrodes crossing the X and Y display electrodes; an electrode drive circuit which drives the X and Y display electrodes and address electrodes; and a drive circuit which control the electrode drive circuit. The drive control circuit performs an address drive control for selectively turning cells ON in each subfield, sustain drive control for generating sustain discharge in the ON cells, and reset drive control for resetting charges on the electrodes by applying slope pulse voltage on the Y display electrodes. The drive control circuit also performs reset drive control corresponding to the sustain discharge count.

Abstract: Using a guidance system with a simple configuration, propulsive motion along a longitudinal direction and changing of the propulsion direction are easily performed with good precision and stability. There is provided a capsule-type medical apparatus 201 which is inserted into the body of a subject and is guided by an external magnetic field, the capsule-type medical apparatus 201 comprising: a substantially cylindrical capsule 202; a propulsion mechanism 207 for converting rotary motion about a longitudinal axis R of the capsule 202 into propulsive motion along the longitudinal axis R; a magnet 205 accommodated inside the capsule 202 and disposed in such a manner that the magnetic-pole direction thereof can be switched between a direction along the longitudinal axis R and a direction intersecting the longitudinal axis R; and a securing portion 212 for securing the magnet 205 to the capsule 202 in each of the switched states of the magnetic-pole direction.

Abstract: A semiconductor optical amplifier is provided having polarization independent optical amplification characteristics and a flat gain spectrum over a wide wavelength region. In the semiconductor optical amplifier including a multi-quantum well active layer formed of well layers and barrier layers alternately laminated to each other on an InP substrate, the well layers and the barrier layers each have a tensile strain, and the tensile strain of each of the barrier layers is larger than the tensile strain of each of the well layers.

Abstract: At an on-cell reset, a positive ramp wave of an ultimate voltage, which is larger than a maximum voltage of a sustain pulse, and smaller than an ultimate voltage of a positive ramp wave applied to a Y electrode at an all-cell reset, is applied to the Y electrode to make a weak discharge occur at a cell where it is non-lighting at a previous sub-field and a wall charge thereof is decreased due to an influence from an adjacent cell, thereby, it makes it possible to return a wall charge state to a normal state, to be capable of lighting a cell to be lighted securely based on a display data.

Abstract: A capsule medical device includes a capsule-shaped casing that can be introduced into an in-vivo region of a subject; and a rotation driving unit that generates torque along a circumferential direction of the capsule-shaped casing. The capsule medical device also includes a cutting-obtaining unit that rotates along the circumferential direction of the capsule-shaped casing due to the torque to cut out and obtain a mass of body tissue from the in-vivo region of the subject.

Abstract: A semiconductor optical amplification device is disclosed that has a gain spectrum of a wide bandwidth. The semiconductor optical amplification device includes an InP substrate and an active layer on the InP substrate. The active layer has a quantum well structure formed by alternately stacking a barrier layer and a well layer, the barrier layer is formed from a tensile-strained InGaAs film, and the well layer is formed from a compressively-strained InGaAs film.

Abstract: A polarization-independent SOA is provided which uses an InP substrate (11) as a semiconductor substrate and uses GaInNAs having introduced tensile strain as an active layer (14). With this configuration, the polarization independence is achieved by introducing the tensile strain, and high saturation optical output power is realized by reducing the film thickness of the active layer (14) as well as the gain peak wavelength is increased by reducing the band gap of the active layer (14) through use of GaInNAs made by adding nitrogen (N) to GaInAs as a material of the active layer (14) so as to achieve high gain especially in C-band and L-band even when band filling exits at the time of injecting a high current into the active layer (14).

Abstract: A semiconductor optical amplifier, an acousto-optic tunable filter, a phase shifter, a lens, and an internal etalon are arranged in a resonator. Outside the resonator, two lenses, two beam splitters, two photo-detectors, and an external etalon are arranged. The internal etalon is a quartz etalon and the external etalon is a crystal etalon. Therefore, the rate of change in transmission peak wavelength of the internal etalon to a temperature change is greater than that of the external etalon.

Abstract: To stably and properly monitor an inside of a body by using an easily operable placement technique, a capsule endoscope 101 to be swallowed from an oral cavity 200 to acquire in-vivo information of a subject 201 and to wirelessly output for a transmission of the in-vivo information to an outside of a body, a string member 103 that is connected to the capsule endoscope 101 for positioning the capsule endoscope 101 at a gastric cardia 202, and a fixing portion 104 that is a portion of the string member 103, is provided on a position with which a length from the capsule endoscope 101 corresponds to a length from the gastric cardia 202 to the inside of an esophageal region 203 for fixing the string member 103 that has located the capsule endoscope 101 at the gastric cardia 202 to the inside of the esophageal region 203 by an endoscopic fixture are included.

Abstract: An optical integrated device includes an optical waveguide structure formed on a semiconductor substrate and including a plurality of first channel optical waveguide portions, an optical coupler portion and a second channel optical waveguide portion, a burying layer formed from a semi-insulating semiconductor material and burying the optical waveguide structure therein such that an upper portion thereof forms a flat face and a side portion thereof forms an inclined face having a predetermined angle with respect to the semiconductor substrate, and a plurality of dummy structure bodies provided over a desired region in the proximity of at least an output side of the optical coupler portion so that radiation light from the optical coupler portion is spatially separated from signal light propagating along the second channel optical waveguide portion. The plural dummy structure bodies are provided discretely so as to be buried flat by the burying layer.

Abstract: A body-insertable apparatus that can reduce the apparatus size and perform projection operation of an injection needle in a power saving manner is provided. A body-insertable apparatus 1 according to the present invention has a balloon 4 for storing a medical fluid in a capsule-like casing 2, and an injection needle 5 including an elastic membrane 6. The body-insertable apparatus 1 discharges the medical fluid due to contraction of the balloon 4, applies a discharge pressure of the medical fluid to the elastic membrane 6 to expand the elastic membrane 6, and projects the injection needle 5 from the casing 2 due to the expansion of the elastic membrane 6. Further, the body-insertable apparatus 1 has a channel forming unit 11 for forming a channel 11a connecting to the balloon 4 and a channel 11b connecting to the injection needle 5, and a communication adjusting mechanism 12.

Abstract: An already-existing and general-purpose capsule endoscope for alimentary canal is enabled to be used to monitor a body cavity by directly diverting the already-existing and general-purpose capsule endoscope to a body-cavity-indwelling capsule endoscope in a simple and secure manner. An indwelling device for an encapsulated medical device of the invention includes a latching portion 203 which fixes a capsule endoscope 300 and a retaining unit 202 which mounts and retains a capsule endoscope 300. Therefore, the capsule endoscope 300 and the latching portion 203 are integral with each other only by mounting and retaining the capsule endoscope 300 to and in the retaining unit 202, and then the capsule endoscope 300 can be placed along with the latching portion 203 by setting the latching portion 203 to a desired region in the body cavity to fix the latching portion 203 to a body cavity tissue by endoscopic treatment.