Abstract: A stator for a rotary electric machine, including a stator core having a plurality of slots, and a multi-phase stator coil wound around the stator core by double-layer winding. The multi-phase stator coil is formed by winding a plurality of double-wound coils around an entire circumference of the stator core for each phase, each of the double-wound coils being wound concentrically with different circumferential lengths. Each of the double-wound coils is formed of a coil portion having a larger circumferential length and a coil portion having a smaller circumferential length. In one of the double-wound coils, a total number of coils inserted into the plurality of slots for the coil portion having the larger circumferential length and a total number of coils inserted into the plurality of slots for the coil portion having the smaller circumferential length are equal to each other.

Abstract: There is provided a switching power supply circuit (1) for supplying a power supply voltage to a load through a transmission line PL. The switching power supply circuit (1) includes: a voltage conversion unit (11) for inputting thereinto an input voltage VIN and a control signal Vc, converting the input voltage VIN into an output voltage Vo having a magnitude corresponding to the control signal Vc, and outputting the output voltage Vo to the transmission line PL; a signal generation unit (12) for monitoring a load current ILOAD flowing through the transmission line PL and generating a signal corresponding to a voltage dropped in the transmission line PL; and a low pass filter (13) for outputting the signal generated in the signal generation unit (12) to the voltage conversion unit (11) as the control signal Vc.

Abstract: There is provided a switching power supply circuit (1) for supplying a power supply voltage to a load through a transmission line PL. The switching power supply circuit (1) includes: a voltage conversion unit (11) for inputting thereinto an input voltage VIN and a control signal Vc, converting the input voltage VIN into an output voltage Vo having a magnitude corresponding to the control signal Vc, and outputting the output voltage Vo to the transmission line PL; a signal generation unit (12) for monitoring a load current ILOAD flowing through the transmission line PL and generating a signal corresponding to a voltage dropped in the transmission line PL; and a low pass filter (13) for outputting the signal generated in the signal generation unit (12) to the voltage conversion unit (11) as the control signal Vc.

Abstract: The invention provides a technique to widely spread the frequency spectrum of switching noise generated by a switching action and to reduce the noise level at a particular frequency. A switching regulator (6A) includes a computing unit with computing function. First, in the computing unit, a pulse-width-modulation processing unit (PWM) (2a) performs pulse-width-modulation processing of receiving a feedback signal corresponding to the output of a detector 1 to determine an on-duty cycle of a pulse signal. Subsequently, for the signal and data obtained by the PWM (2a) to be subjected to further modulation processing for spectrum spreading, a branching processing is performed by making changing-over unit (2d) randomly select asynchronous-modulation processing unit (ASM) (2e) or pulse-position-modulation processing unit (PPM). When the PPM is selected, another branching processing is performed by making the changing-over unit (2d) select a first PPM (2f) or a second PPM (2g) depending on the on-duty cycle.

Abstract: A double rotation Y-cut crystal unit includes a crystal element, which is respectively rotated by an angle ?° and an angle ?° in a counterclockwise direction centering on an X axis and a Z axis of crystal axes (X, Y, Z), which principal surface is perpendicular to a Y? axis of newly-generated rotated crystal axes (X?, Y?, Z?), and which is formed into a rectangular geometry longer in one direction, wherein when the X? axis is rotated by an angle ?° in the counterclockwise direction with the Y? axis serving as a central axis in a plane of X?-Z? of the rotated crystal axes serving as the principal surface, a direction of a long side of the crystal element corresponds to the rotated X? axis direction, and wherein the angle ?° is set to (30??)°±45°.

Abstract: When recording/reproducing an optical disc having a recording layer of multi-layer structure, an unwanted optical beam reflected from a recording layer other than a target layer for recording/reproduction is incident on a photodetector to cause an unwanted disturbance component to leak to a detection signal, giving rise to a degradation in the quality of a tracking control signal. In an optical pickup apparatus, for suppression of the degradation, an optical element is mounted having a diffraction area for diffracting part of the optical beam and light receiving planes for sub-optical beams are provided each of which has a light shielding zone or dead zone of a predetermined width on its central sectioning line.

Abstract: The invention provides a technique to widely spread the frequency spectrum of switching noise generated by a switching action and to reduce the noise level at a particular frequency. A switching regulator (6A) includes a computing unit with computing function. First, in the computing unit, a pulse-width-modulation processing unit (PWM) (2a) performs pulse-width-modulation processing of receiving a feedback signal corresponding to the output of a detector 1 to determine an on-duty cycle of a pulse signal. Subsequently, for the signal and data obtained by the PWM (2a) to be subjected to further modulation processing for spectrum spreading, a branching processing is performed by making changing-over unit (2d) randomly select asynchronous-modulation processing unit (ASM) (2e) or pulse-position-modulation processing unit (PPM). When the PPM is selected, another branching processing is performed by making the changing-over unit (2d) select a first PPM (2f) or a second PPM (2g) depending on the on-duty cycle.

Abstract: Instinctive operation of editing parameters of waveform is provided. Tabs 38, 40 and 42 are displayed on a display screen 14 to show existence of parameter edit screen layers of different combinations of characters, waveforms and channels. If one of the tabs are selected the display is switched to show the corresponding parameter edit screen layer. Channel characters or waveforms are displayed on the tabs 38, 40 and 42 and are changed dynamically according to the setting so that a user can easily realize setting outlines of the respective channels at a glance.

Abstract: When recording/reproducing an optical disc having a recording layer of multi-layer structure, an unwanted optical beam reflected from a recording layer other than a target layer for recording/reproduction is incident on a photodetector to cause an unwanted disturbance component to leak to a detection signal, giving rise to a degradation in the quality of a tracking control signal. In an optical pickup apparatus, for suppression of the degradation, an optical element is mounted having a diffraction area for diffracting part of the optical beam and light receiving planes for sub-optical beams are provided each of which has a light shielding zone or dead zone of a predetermined width on its central sectioning line.

Abstract: A double rotation Y-cut crystal unit includes a crystal element, which is respectively rotated by an angle ?° and an angle ?° in a counterclockwise direction centering on an X axis and a Z axis of crystal axes (X, Y, Z), which principal surface is perpendicular to a Y? axis of newly-generated rotated crystal axes (X?, Y?, Z?), and which is formed into a rectangular geometry longer in one direction, wherein a direction of the long side of the crystal element corresponds to an axial direction when the crystal element is rotated by an angle ?° in the counterclockwise direction with the X? axis serving as a central axis in a plane of X?-Z? of the rotated crystal axes serving as the principal surface, and wherein the angle ?° is set to (30-?)°±45°.

Abstract: An optical pickup of this invention includes a first objective lens for a CD or DVD, a second objective lens for a BD, a photodetector, a light source for a CD or DVD, a light source for a BD; a first optical mechanism for guiding first reflected light from the CD or DVD toward the photodetector via the first objective lens, and a second optical mechanism for guiding second reflected light from the BD via the second objective lens and changing the direction of the second reflected light toward the first optical mechanism. After the second reflected light joins a light path of the first reflected light guided by the first optical mechanism, the second reflected light is supplied by the first optical mechanism to the photodetector.

Abstract: An exemplary piezoelectric device includes a base having a first connection electrode electrically connected to an external electrode. A second connection electrode is connected to the first connection electrode on a first main surface of a supporting member affixed to the base. A third connection electrode, formed on a second main surface of the supporting member, is electrically connected to the second connection electrode. A piezoelectric vibrating piece is affixed to the supporting member by application of an adhesive applied to the third connection electrode. The piezoelectric vibrating piece and includes excitation electrodes. A convexity is located and extends in a designated direction relative to the third connection electrode to prevent applied adhesive from spreading beyond a designated area of the piezoelectric vibrating piece.

Abstract: An optical device wherein an optical component and a plurality of light emitting elements are mounted on an identical substrate, a level of a surface on which the optical component is mounted is different from that of a surface on which the light emitting elements are mounted by a step provided on the substrate, at least one plane vertical to the surface on which the optical component is mounted and located on a periphery of the substrate is opened, a reflecting surface, a transmitting surface or a diffraction grating surface of the optical component is provided along sides generated by the step provided in the substrate, optical axes of the plurality of light emitting elements of which polarization axes are in parallel with each other intersect with each other on the surface, and an exit light beam of the light emitting elements is emitted from the opened plane.

Abstract: An optical pick-up apparatus having a plurality of light sources emitting light fluxes having different wavelengths from each other, an objective lens for focusing each of the light fluxes emitted from a plurality of light sources onto the information recording surface of the information recording medium, and an optical element reflecting a first light flux input from a predetermined direction, and a second light flux input from a different position in the direction of the optical axis of the objective lens in an inverse side to the side to which the first light flux is input, approximately in parallel to the direction of the optical axis of the objective lens.

Abstract: An optical pick-up apparatus having a plurality of light sources emitting light fluxes having different wavelengths from each other, an objective lens for focusing each of the light fluxes emitted from a plurality of light sources onto the information recording surface of the information recording medium, and an optical element reflecting a first light flux input from a predetermined direction, and a second light flux input from a different position in the direction of the optical axis of the objective lens in an inverse side to the side to which the first light flux is input, approximately in parallel to the direction of the optical axis of the objective lens.

Abstract: An optical pick-up apparatus having a plurality of light sources emitting light fluxes having different wavelengths from each other, an objective lens for focusing each of the light fluxes emitted from a plurality of light sources onto the information recording surface of the information recording medium, and an optical element reflecting a first light flux input from a predetermined direction, and a second light flux input from a different position in the direction of the optical axis of the objective lens in an inverse side to the side to which the first light flux is input, approximately in parallel to the direction of the optical axis of the objective lens.

Abstract: An optical pick-up apparatus of the invention is structured, for example, such as to have a plurality of light sources emitting light fluxes having different wavelengths from each other, an objective lens for focusing each of the light fluxes emitted from a plurality of light sources onto the information recording surface of the information recording medium, and an optical element reflecting a first light flux input from a predetermined direction, and a second light flux input from a different position in the direction of the optical axis of the objective lens in an inverse side to the side to which the first light flux is input, approximately in parallel to the direction of the optical axis of the objective lens. Accordingly, the invention provides a compact optical pick-up apparatus which can execute at least one of recording and reproduction with respect to a plurality of information recording and reproducing mediums having different wavelengths for recording or reproducing light.

Abstract: When recording/reproducing an optical disc having a recording layer of multi-layer structure, an unwanted optical beam reflected from a recording layer other than a target layer for recording/reproduction is incident on a photodetector to cause an unwanted disturbance component to leak to a detection signal, giving rise to a degradation in the quality of a tracking control signal. In an optical pickup apparatus, for suppression of the degradation, an optical element is mounted having a diffraction area for diffracting part of the optical beam and light receiving planes for sub-optical beams are provided each of which has a light shielding zone or dead zone of a predetermined width on its central sectioning line.

Abstract: An electronic instrument displays commands and arguments and their description related to specific user operations of an electronic instrument. A command help bar is displayed in a window with the command help bar displaying a command and associated argument and a description of the command and argument as a function of user defined operations of the electronic instrument using operation means. The user entered value is used as the argument, which allows the user to easily understand a specific description. The user may access additional help windows that displays information on a detailed explanation of the description method (syntax) of the displayed command and a programming example. The description of the command and argument including the specific setting value may be copied and pasted into a program file in a programming widow that is displayed at the same time, which enhances programming efficiency.

Abstract: A signal generator displays signal patterns according to a sequence and displays a current output or waiting signal pattern distinctively from other signal patterns after the start of signal output operation. Identifiers such as index numbers may be related to the respective signal patterns and displayed. The identifier of the current output or waiting signal pattern is blinked to distinguish the signal pattern from other signal patterns. Alternately, the color of the current output or waiting signal pattern may be reversed or highlighted to easily identify the signal pattern from the other signal patterns.