Abstract: An optical disc drive includes a light source, a lens, a focusing section, a spherical aberration corrector, a focus signal generator, a gain calculator and a processor. The focusing section forms a beam spot in a focusing state on the information storage layer of an optical disc by controlling the position of the lens. The spherical aberration corrector changes a spherical aberration with the beam spot in a focusing state according to a drive value of a driving signal supplied to the spherical aberration corrector. The focus signal generator generates a focus signal representing the focusing state of the beam spot. The gain calculator calculates a loop gain of a focus control system in response to the focus signal. The processor determines the drive value for the spherical aberration corrector by the loop gain.

Abstract: A delay circuit and a plurality of accepting circuits are comprised. The input signal supplied from exterior is delayed for a predetermined length of time by the delay circuit, and then it is distributed and output to the plurality of the receiver circuits. The delay time of the delay circuit is adjusted to optimize an accepting timing to an input signal by a clock signal in each of the accepting circuit. The each accepting circuit reliably accepts the delayed input signal respectively in synchronization with a clock signal. Therefore, it is unnecessary to respectively provide a delay circuit in the plurality of the accepting circuits. As a result, the plurality of accepting circuits can reliably accept input signals without enlarging a circuit scale. A plurality of delay circuits, a plurality of accepting circuits, and an operating circuit are comprised. The delay circuit receives a plurality of input signals, and outputs each of the delayed input signals respectively to the plurality of accepting circuits.

Abstract: A semiconductor device includes a word line drive circuit resetting the word line by driving the word line connected to a memory cell and switching a reset level of the word line drive circuit at the time of the reset operation of the word line. Further, a semiconductor device includes a memory cell array formed by arranging a plurality of memory cells and a reset level switch circuit for selecting a first potential or a second potential and supplying the first potential or the second potential to the word line drive circuit.

Abstract: Device-side connectors 14A and 14b are provided on a plurality of electronic control units 10A and 10B, respectively. A harness-side connector 20 is provided at a wire harness 30. The harness-side connector 20 has a plurality of fitting convex portions 21 integrally formed in such a manner as to be connectable to the device-side connectors 14A and 14B. Each of the electronic control units 10A and 10B is accommodated in, for instance, a case 12, so that relative positions of the control units are fixed therein. Thus, the fitting convex portion 21 can be simultaneously coupled to the device-side connectors 14A and 14B.

Abstract: A delay circuit and a plurality of accepting circuits are comprised. The input signal supplied from exterior is delayed for a predetermined length of time by the delay circuit, and then it is distributed and output to the plurality of the receiver circuits. The delay time of the delay circuit is adjusted to optimize an accepting timing to an input signal by a clock signal in each of the accepting circuit. The each accepting circuit reliably accepts the delayed input signal respectively in synchronization with a clock signal. Therefore, it is unnecessary to respectively provide a delay circuit in the plurality of the accepting circuits. As a result, the plurality of accepting circuits can reliably accept input signals without enlarging a circuit scale. A plurality of delay circuits, a plurality of accepting circuits, and an operating circuit are comprised. The delay circuit receives a plurality of input signals, and outputs each of the delayed input signals respectively to the plurality of accepting circuits.

Abstract: An optical disc apparatus comprises: rotating means for rotating an information recording medium; a light source for irradiating a light beam onto a data side of the information recording medium; converging means for converging said light beam; focus error detecting means for detecting a difference between said data side and the focus of the light beam converged by said converging means; focus direction transferring means for transferring said converging means in a direction perpendicular to said data side; focus controlling means for driving said focus direction transferring means based on the output of said focus error detecting means in such a way that said light beam converges on said data side in a predetermined state; tracking direction transferring means for transferring said light source in the radius direction of said information recording medium; and tilt calculating means for calculating average values of the outputs of said focus controlling means obtained for a period of time, which is an integer

Abstract: An inexpensive switch connecting structure is provided capable of avoiding abnormal wear-off or deformation of a contact spring of a supporting plate even if a movement in a basic shape is placed in a timepiece case having a shape different from the movement and a push button is repeatedly used. The switch connecting structure includes a supporting plate attached to cap a movement of a timepiece and provided with a contact spring having a contact portion at a tip brought into contact with a switch contact portion of a circuit board, and a switch regulating plate provided with a switch spring on an outer periphery corresponding to said contact spring and covering at least part of said supporting plate, wherein said switch spring is flexed by operation of an externally operated component attached to a timepiece case, thereby bringing the contact portion of the contact spring of said supporting plate into contact with the switch contact portion of said circuit board.

Abstract: A liquid crystal display apparatus comprises:

Abstract: An optical disk apparatus includes an optical detector which has light receiving areas divided nearly concentrically with an optical beam and outputs a signal corresponding to the amount of the reflected light from an optical disk. A surface vicinity detecting section adds up signals from all the light-receiving areas of the optical detector and outputs a detection signal. The detection signal continuously varies so as to have one maximum level while a beam spot of the optical beam moves from the surface of the information medium to the information plane. An information plane detecting section judges that the focus or the beam spot of the optical beam comes closer to the information plane of the optical disk by detecting the gradient of the detection signal. An approach of a condensing lens and the optical disk is judged based on the judgment results, and thus a collision of the condensing lens and the optical disk can be prevented.

Abstract: A multilayer printed circuit board having resinous insulating layers and conductor layers alternately superposed on a circuit board with ample adhesive strength, a method for the production thereof, and a curable resin composition useful for the formation of resinous insulating layers are disclosed. The manufacture of the multilayer printed circuit board is accomplished by applying the curable resin composition to the surface of conductor layer of the circuit board, thermally curing the applied layer thereby forming resinous insulating layer, then boring a through-hole in the circuit board, treating the resinous insulating layer with a coarsening agent thereby imparting undulating coarsened surface thereto, subsequently coating the surface of resinous insulating layer and the inner surface of the through-hole with a conductor layer as by electroless plating, and thereafter forming a prescribed circuit pattern in the conductor layer.

Abstract: A first transistor is turned on during operation of a circuit block, to connect a substrate of the transistor to a first substrate voltage line. A second transistor is turned on during non-operation of the circuit block, to connect the substrate of the transistor to a second substrate voltage line. ON resistance of the second transistor is higher than that of the first transistor. A source-to-substrate voltage of the transistor being not in operation is set to be higher than that of the transistor being in operation. When a semiconductor integrated circuit switches from the operation state to the non-operation state, its substrate voltage changes gradually to a second substrate voltage. Charging/discharging currents of the substrate voltage can be dispersed so that it is possible to suppress current consumption in shifting from the operation state to the non-operation state and reduce a standby current in the non-operation state.

Abstract: A liquid crystal diaplay apparatus having a color filter base plate with a transparent substrate, a resin black matrix formed by dispersing a light-shielding agent therein and a colored film of three primary colors provided on the transparent substrate, an electrode-carrying base plate provided with electrodes for applying an electric field parallel to the color filter, a liquid crystal disposed between said color filter base plate and said electrode-carrying base plate, a first alignment layer on the protective layer, an overcoat film on the colored film, a second alignment layer on the overcoat film, and a spacer formed on the resin black matrix by patterning a resin is disclosed.

Abstract: A multilayer printed circuit board having resinous insulating layers and conductor layers alternately superposed on a circuit board with ample adhesive strength, a method for the production thereof, and a curable resin composition useful for the formation of resinous insulating layers are disclosed. The manufacture of the multilayer printed circuit board is accomplished by applying the curable resin composition to the surface of conductor layer of the circuit board, thermally curing the applied layer thereby forming resinous insulating layer, then boring a through-hole in the circuit board, treating the resinous insulating layer with a coarsening agent thereby imparting undulating coarsened surface thereto, subsequently coating the surface of resinous insulating layer and the inner surface of the through-hole with a conductor layer as by electroless plating, and thereafter forming a prescribed circuit pattern in the conductor layer.

Abstract: A first transistor is turned on during operation of a circuit block, to connect a substrate of the transistor to a first substrate voltage line. A second transistor is turned on during non-operation of the circuit block, to connect the substrate of the transistor to a second substrate voltage line. ON resistance of the second transistor is higher than that of the first transistor. A source-to-substrate voltage of the transistor being not in operation is set to be higher than that of the transistor being in operation. When a semiconductor integrated circuit switches from the operation state to the non-operation state, its substrate voltage changes gradually to a second substrate voltage. Charging/discharging currents of the substrate voltage can be dispersed so that it is possible to suppress current consumption in shifting from the operation state to the non-operation state and reduce a standby current in the non-operation state.

Abstract: An electronic watch with a meter function, capable of a multifunctional display, wherein the dial of the watch is divided into a data display region and a mode display region and the area for displaying the mode, and the area for displaying functional quantities are increased to make the graduations easier to read, with one hand indicating a data display region for data corresponding to physical quantities, and one hand indicating the mode region.

Abstract: Optical disks compliant with different standards are recorded or reproduced by a single recording/reproducing apparatus by a first step of determining a substrate thickness of the disk based on a focusing error signal, when a focusing section for bringing the light beam into a focus on the disk is moved in such a way as to approach or withdraw from the recording surface of the disk; a second step of performing any one step of determining the number of recording surfaces of the disk when the focusing section is moved in such a way as to approach or withdraw from the recording surface of the disk, and determining whether or not the disk can be recorded and reproduced using a tracking error signal detected when the light beam crosses the track.

Abstract: A facsimile machine comprises a fax/modem section for communicating signals with a communication line in order to sending and receiving a fax and a computer unit for outputting AT commands such as a DCS reception command for requesting reception of a DCS (Digital Command Signal) and a TCF reception command for requesting reception of a TCF (Training Check Field) to the fax/modem section. The fax/modem section immediately changes into a TCF reception state for receiving a TCF if the fax/modem section received a DCS. In the TCF reception state, the fax/modem section receives the TCF sent via the communication line and temporarily stores the TCF in a TCF buffer, regardless of whether or not the fax/modem section has already received the TCF reception command from the computer unit. The fax/modem section sends the TCF in the TCF buffer to the computer unit when the fax/modem section received the TCF reception command from the computer unit.

Abstract: An engine of a motorcycle includes a cylinder block and a cylinder head inclined forward on an upper front portion of a crankcase of the engine in an engine installed state. The crankcase comprises a plurality of vertical case sections comprising an upper case section, a middle case section and a lower case section, and the crankshaft is pivotally supported at a mating portion between the upper case section and the middle case section and a transmission shaft is pivotally supported at a mating portion between the middle case section and the lower case section.

Abstract: A semiconductor device having a protective circuit, in order to prevent from breaking internal circuits according to electrostatic forces or noises generated on an input terminal is provided. In the semiconductor, a protective diode for countermeasures is applied to the overshoot between the input terminal and a power source wiring, and a MOS transistor is provided between the power source wiring and a ground wiring. The MOS transistor operates as a gate-controlled lateral transistor and becomes conductive earlier than a large size bipolar transistor resulting in providing protection between the input terminal and the ground wiring.

Abstract: A center site is disposed to intervene in a business transaction achieved through a network. The center site includes an open business information database in which open business information received from member sites connected to the network is accumulated to be opened to the sites and a notarization database to keep therein contents of contracts of transactions between the sites. The center site receives a transaction request from a transaction partner site in accordance with the open business information and notifies the request to an information supply site associated therewith. The center site intervenes in a transaction resultantly accomplished between the information supply site and the transaction partner site and conducts a notarization process for the contents of contract for the transaction to accumulate the contract in a notarization database.