Abstract: In the past there has been a problem that on a detection surface the influence of interference causes a defocusing signal to degrade, narrowing the range in which spherical aberration can be stably detected. Accordingly, a diffraction grating is used to focus the inner and outer sides of luminous flux on separate optical detectors before the optical flux is focused on an optical detector and defocusing signals are independently calculated to find the difference therebetween, thereby providing a spherical aberration signal. This makes it possible to detect spherical aberation signals more stably.

Abstract: An information recording medium and manufacturing method for high-speed and high density recording. An inorganic film is formed by sputtering while applying a bias voltage to shift the substrate voltage potential in the negative direction, or a laminated film is formed by applying energy after coating a substrate with an organic film, and the irregularities maintained even after the laminated film is formed, so that stable, high-capacity and high-speed recording can be attained by forming a multi-information-layer that still retains the irregularities.

Abstract: An information recording method using an optical recording medium including the steps of forming a plurality of recording pulses to irradiate the optical recording medium and recording information to the optical recording medium by irradiating the recording pulses on the optical recording medium. A leading edge of a first recording pulse of the recording pulses shifts at a shifting value, and the shifting value is determined by a combination of a length of M(n) of a mark being currently written and a length s(n?1) of a space precedent to the mark.

Abstract: An information recording apparatus using an optical recording medium includes a light source to irradiate a light beam to the optical recording medium and a pulse former for forming a plurality of recording pulses of the light beam. A leading edge of a first recording pulse of the recording pulses shifts at a shifting value, and the shifting value is determined by a combination of a length of M(n) of a mark being currently written and a length s(n?1) of a space precedent to the mark.

Abstract: An information recording method using an optical recording medium includes the steps of forming a plurality of recording pulses to irradiate the optical recording medium and recording information to the optical recording medium by irradiating the recording pulses on the optical recording medium. At least a leading edge of a first recording pulse and a trailing edge of a last recording pulse of the recording pulses shift at a shifting value, wherein the shifting value is determined by combinations of a length of M(n) of a mark being currently written and at least one of a length s(n?1) of a space precedent to the mark and a length s(n+1) of a space subsequent to the mark.

Abstract: An information recording method in which an energy beam is irradiated to a recording medium and a basic recording pattern is generated. The basic recording pattern has a first power level provides a first state and a second power level providing a second state. Based upon a period of a recording timing generating clock in a recording mode, and a relative velocity of the energy beam and the recording medium, there is formed a first sequence of the second state and the first state based upon parameters as a first small recording pattern, a second sequence which starts with the first state and ends with the first state as a second small recording pattern, a state in which the second small recording pattern follows said the small recording pattern as the basic recording pattern, and a state in which the basic recording patterns are repeated as a recording pattern.

Abstract: An angular velocity sensor having a pillar-shaped vibrator and support members. The support members clamp the vibrator from above and below, at those parts where vibration nodes are formed when the vibrator vibrates. The support members mechanically support the vibrator and are electrically connected to the vibrator. The support members have an uppermost layer covered with a silver or gold coating at the electrically connected parts. Each support member has arms and connecting parts provided at the distal ends of the arms. The connecting parts have a notch each. The support members are electrically and mechanically connected with conductive adhesive provided in the notches, applied to both surfaces of the connecting part and containing silver particles as conductive filler.

Abstract: A recording medium which has a zone or zones storing lookup tables comprising an edge shift value of leading and trailing recording pulses.

Abstract: Light emitted from a laser is divided into two light waves so that the ratio of the power of one light wave to the power of the other will be appropriate. The resultant light waves are irradiated to the same track on a medium. The preceding spot is used for erasure, and modulated so that the same pattern as the one formed with a recording pulse will be formed. The high-power component of the modulated light of the erasing spot causes the temperature of a recording layer to be equal to or higher than the melting point. The medium-power component of the modulated light forms a crystallizing temperature area on the recording layer. A liquid crystal diffraction grating is used to divide power, and a power division ratio is variable and controllable.

Abstract: An information recording method using a recording medium having a first state by a first power level of an energy beam and a second state by a second power level of the energy beam higher than the first power level. When a period of a recording time generating clock in a recording mode is T, and a relative velocity of the energy beam and the recording medium is V, the method includes forming a sequence of the second state with length avT (first mark), the first state with length ivT (first space) following the first mark, the second state with length mvT (second mark) following the first space, the first state with length jvT (second space) following the second mark and the second state with length bvT (third mark) following the second space as a first small recording pattern.

Abstract: An integrated optical head records and reproduces information to and from optical discs of different types, including CD and DVD, with use of a single information recording/reproducing apparatus. The optical head has a plurality of semiconductor lasers of different wavelengths integrated by index alignment onto a substrate formed with an optoelectric integrated circuit, photodetection patterns, and a reflecting mirror.

Abstract: A liquid crystal display device for displaying video data having a detection circuit for detecting a luminance distribution based on video data which is inputted, the luminance distribution being indicative of generation frequency of gradations in each of divided region which includes a plurality of gradations. The display device includes a determination circuit for determining at least one of a plurality of divided regions of higher generation frequency of gradation than that of other divided regions based on the luminance distribution, a correction circuit for correcting the video data so as to make a luminance characteristic of the at least one of the plurality of divided regions of higher generation frequency of gradation more abrupt than a luminance characteristic of the other divided regions, and a liquid crystal display panel for displaying the corrected video data. A width of the divided region is changeable.

Abstract: Disclosed is an angular velocity sensor superior in shock-proofness and in assembling properties. The angular velocity sensor 1 includes support members 10A1, 10A2, 10B1 and 10B2, bonded to two nodal points of a pillar-shaped oscillator, generated on oscillations of the oscillator, in a manner of sandwiching the nodal points from upper and lower sides of the oscillator. The support members simultaneously serve for mechanically supporting and providing for electrical connection of the oscillator. Upper support members 10A1, 10A2 and lower support members 10B1 and 10B2 for the nodal points include bent parts halfway, the bent parts being bent in the same direction with respect to the longitudinal direction of the oscillator. The upper support members and lower support members also include arms 12 extending at right angles to the up-and-down direction and to the longitudinal direction of the oscillator and junction parts 13 for the arms and the oscillator.

Abstract: An information storage medium includes a substrate forming a first groove having a depth, and a second groove adjacent to the first groove and different depth from the first groove; and a recording layer formed on the substrate to record information marks, making optical characteristics of the information marks different for each such that diffracted lights from the plurality of marks orthogonally intersect one another.

Abstract: An information recording apparatus having an energy beam generator for generating an energy beam, a power adjusting mechanism for setting a power level of the energy beam to a first power level state and a second power level state which is higher than the first power level state and a circuit for generating a basic recording pattern to record a recording medium. When a period of a recording timing generating clock in a recording mode is T, and a relative velocity of the energy beam and the recording medium is v, the circuit forming a sequence of the first and second power level states so as to effect recording.

Abstract: For us in nonaqueous electrolyte secondary cells, the invention provides an electrode which comprises a first carbon material serving as a core material, and a second carbon material coating the first carbon material over the surface thereof and containing boron. When used as an active substance for negative electrode to provide a nonaqueous electrolyte secondary cell, the electrode diminishes the reduction of the cell capacity that would result if the cell is allowed to store, giving improved storage characteristics to the cell.

Abstract: An optical disk recording method includes the steps of: providing a multi-pulse chain from a recording wave; independently changing the pulse rise timing and pulse fall timing (pulse width) of the first pulse in the multi-pulse chain in accordance with a preceding space length and a recording mark length; changing the pulse rise timing and pulse fall timing (pulse width) in accordance with a following space length and the recording mark length in a predetermined timing or in independence; and in relation to the smallest mark recorded by irradiation with mono pulse, changing the rise timing in accordance with the preceding space length and the recording mark length and the fall timing (pulse width) in accordance with the following space length and recording mark length, compensating various optical disks different in recording material without change of the fundamental waveform.

Abstract: An information recording apparatus includes a multilayer information recording medium having a first layer containing an electro-chromic material, an electrode layer applying a voltage to the first layer to color the first layer, a second layer containing an electro-chromic material, a unit for applying the voltage to the first layer, a first optical irradiating unit for irradiating a first optical spot onto the first layer, and a second optical irradiating unit for irradiating a second optical spot onto the second layer after irradiating the first optical spot onto the first layer.

Abstract: A display apparatus includes a display having a plurality of pixels, and a controller which selects a pattern corresponding to a gradation of gradation data. On-state pixels are added to a pattern corresponding to one gradation of the gradation data to obtain a pattern corresponding to another gradation of the gradation data higher than the one gradation of the gradation data while maintaining unchanged an arrangement of on-state pixels in the pattern corresponding to the one gradation of the gradation data.

Abstract: An information recording medium comprising a plurality of layers for recording or reproduction of information by optical irradiation. Each of the layers of the recording medium includes asperities made up of a groove, wherein the groove in each of the layers has wobbles of a first frequency and wobbles of a second frequency that is different from the first frequency within a single track. The first frequency is constant in each of the layers, and a different signal is obtained from the wobbles of the first and second frequencies in each of the plurality of layers.