Patent application number | Description | Published |
20130319735 | METAL-CLAD LAMINATE AND PRINTED WIRING BOARD - A metal-clad laminate of the present invention comprises an insulating layer, and a metal layer that is present at least on one surface side of the insulating layer. The insulating layer is a laminate of at least three layers: a center layer, a first resin layer that is present on one surface side of the center layer, and a second resin layer that is present on the other surface side of the center layer. The center layer, the first resin layer and the second resin layer each contain a cured product of a respective resin composition. The elastic modulus of the cured product of the resin composition contained in the center layer is lower than the elastic moduli of both the cured product of the resin composition contained in the first resin layer and the cured product of the resin composition contained in the second resin layer. | 12-05-2013 |
20140116764 | METAL-CLAD LAMINATE AND PRINTED WIRING BOARD - A metal-clad laminate according to the invention is provided with an insulating layer and a metal layer present on at least one surface side of the insulating layer. The insulating layer is formed by laminating at least two layers, which are a first resin layer and a second resin layer disposed between the first resin layer and the metal layer. The first resin layer and the second resin layer each include a cured product of a resin composition. The resin composition in the first resin layer is different from the resin composition in the second resin layer. A relative permittivity of the cured product of the resin composition included in the second resin layer is lower than a relative permittivity of the cured product of the resin composition included in the first resin layer. | 05-01-2014 |
20140311781 | METAL-CLAD LAMINATE AND PRINTED WIRING BOARD - A metal-clad laminate of the present invention includes an insulating layer and a metal layer disposed on at least one surface of the insulating layer. The insulating layer is formed by laminating at least a center layer and surface resin layers disposed on both surfaces of the center layer. The center layer contains a heat-curable resin and includes a core layer containing at least one fibrous base material and a heat-curable resin layer that does not contain a fibrous base material. The ratio of the thickness of the surface resin layer to the thickness of the heat-curable resin layer is between 0.5 and 10. | 10-23-2014 |
20140367150 | PREPREG, METAL-CLAD LAMINATE, AND PRINTED WIRING BOARD - The present disclosure relates to a prepreg formed by drying a fabric substrate impregnated with a resin composition by means of heating until the resin composition is in a semi-cured state. The resin composition contains (A) at least one of an epoxy resin having naphthalene skeleton and a phenolic curing agent; and (B) a polymer having structures represented by the following formulae (I) and (II), no unsaturated bond between carbon atoms, an epoxy value ranging from 0.2 to 0.8 ep/kg, and an weight-average molecular weight ranging from 200,000 to 850,000: | 12-18-2014 |
20140374142 | METAL-PLATED LAMINATED BOARD, AND PRINTED WIRING BOARD - A metal-clad laminate according to the present embodiment includes an insulating layer, and a metal layer present on at least one surface side of the insulating layer. The insulating layer is a laminate of at least three layers of a center layer, a first resin layer present on one surface side of the center layer, and a second resin layer present on the other surface side of the center layer. The center layer, the first resin layer and the second resin layer each contain a cured product of a resin composition. Coefficients of thermal expansion of the cured products of the resin compositions contained in the first resin layer and the second resin layer are smaller than a coefficient of thermal expansion of the cured product of the resin composition contained in the center layer. | 12-25-2014 |
20150037589 | RESIN COMPOSITION, RESIN VARNISH, PREPREG, METAL-CLAD LAMINATED BOARD AND PRINTED WIRING BOARD - The present invention relates to a resin composition that becomes a cured product that exhibits force response behavior such that an area surrounded by a tensile stress-strain curve f1(x), when an amount of strain is increased from 0% to 0.3% by pulling at 999 μm/min while plotting the amount of strain on the x axis and tensile stress on the y axis, and also surrounded by the x axis, is greater than an area surrounded by a stress-strain curve f2(x), when the amount of strain is decreased from 0.3%, and also surrounded by the x axis, and the amount of change in the amount of strain when tensile stress is 0, before and after applying tensile stress, is 0.05% or less. | 02-05-2015 |
20150075852 | PREPREG, METAL-CLAD LAMINATE, AND PRINTED WIRING BOARD - The prepreg in accordance with the present invention is formed from a resin composition and a fabric substrate impregnated with the resin composition. The resin composition contains: (A) a thermosetting resin composition; (B) a resin having a Tg not more than 100° C.; and (C) an inorganic filler. The resin (B) having the Tg not more than 100° C. has: a carbonyl group or a siloxane group; and an epoxy group or a phenolic hydroxyl group. The inorganic filler (C) is subjected to surface-treatment with a silane coupling agent represented by a general formula: YSiX | 03-19-2015 |
Patent application number | Description | Published |
20140020877 | HEAT EXCHANGER ELEMENT AND HEAT EXCHANGER - There is provided a heat exchanger element and a heat exchanger which are smaller, lighter in weight, and lower in cost than conventional heat exchange bodies, heat exchangers and the like. In the honeycomb structure, t≧0.2, ρ>100, 20≦t×ρ≦250, and 10,000≦λ×ρ are satisfied when thermal conductivity of a material for the partition walls is taken as λ [W/K˜m], and, regarding a cell structure of the honeycomb structure, a wall thickness of the partition walls is taken as t [mm], and a cell density is taken as ρ [cells/sq.in.]. | 01-23-2014 |
20140296055 | HONEYCOMB STRUCTURE AND MANUFACTURING METHOD THEREOF - To provide a honeycomb structure capable of using as a catalyst carrier, which functions as a heater, and where a bonding layer is hard to break and an electrical resistance value is hard to rise; including a honeycomb segment bonded body where honeycomb segments are bonded by bonding layer, and a pair of electrode members disposed on a side surface of the bonded body, the electrode members is formed into a band shape, and in a cross section perpendicular to the cell extending direction, one electrode member is disposed on an opposite side across the center of the bonded body to another electrode member, and in at least a part of the bonding layer, inorganic fibers made of β-SiC and a metal silicide are included in a porous body where silicon carbide are bound with silicon in a state where pores are held among the particles. | 10-02-2014 |
Patent application number | Description | Published |
20080318874 | Novel Cyclohexane Derivative, Prodrug Thereof and Salt Thereof, and Therapeutic Agent Containing the Same for Diabetes - A cyclohexane derivative having the function of reducing a blood sugar level and having preferable properties required of medicines, such as long-lasting drug activity, metabolic stability, and safety; and a medicinal composition for use in the prevention or treatment of diseases attributable to hyperglycemia, such as diabetes, e.g., insulin dependent diabetes mellitus (type 1 diabetes) or noninsulin-dependent diabetes mellitus (type 2 diabetes), complications of diabetes, and obesity. The derivative is a compound represented by the formula (I): | 12-25-2008 |
20080319047 | Novel Glucitol Derivative, Prodrug Thereof And Salt Thereof, And Therapeutic Agent Containing The Same For Diabetes - The invention provides a glucitol derivative having the function of reducing a blood sugar level and having preferable properties required of medicines, such as long-lasting drug activity; and a medicinal composition for use in the prevention or treatment of diseases attributable to hyperglycemia, such as diabetes, complications of diabetes, and obesity. The derivative is a compound represented by the formula (I): | 12-25-2008 |
Patent application number | Description | Published |
20090103406 | Optical disc drive - There is provided an optical disc drive comprises an optical pick-up including a laser diode (LD) and a laser diode driver (LDD) for driving the laser diode, a digital signal processor (DSP) including a write strategy circuit and low voltage differential signaling (LVDS) drivers for transmitting a produced write strategy signal, a circuit board having the DSP mounted thereon and including a line for transmitting the write strategy signal, a transmission line connecting the circuit board and the LDD and transmitting a write strategy signal, and differential resistors connected between differential lines of outputs of the LVDS drivers. Especially, a resistor having a resistance value in a range of 80 to 500Ω is inserted between the differential lines of outputs of the LVDS driver inside the DSP. | 04-23-2009 |
20090201775 | Optical Disc Apparatus and Method for Discriminating Optical Disc - This invention improves the accuracy of wobble signal detection for disc discrimination and reduces discrimination errors due to noise. In an optical disc apparatus, a wobble signal generator creates a wobble signal from an electrical signal which has been obtained from conversion by a pickup. A bandpass filter (BPF) is set to change its central frequency to a wobble frequency f | 08-13-2009 |
20110158063 | OPTICAL DISC DEVICE AND DATA REPRODUCTION METHOD FOR THE SAME - Prevention of deletion of data in an unintended recording layer of an optical disc is ensured even when servo deviation occurs while controlling data reproduction. A light source outputs a light beam with light intensity according to a driving current on which a high frequency signal is superimposed. The light beam is collected on a recording layer of an optical disc. As triggered by detection of servo deviation during data reproduction, a light intensity controller adjusts a superimposed amount of the high frequency signal in the driving current to suit to a specific recording layer with the lowest reproduction tolerance in the optical disc and thereby controls the light intensity of the light beam output from the light source. | 06-30-2011 |
20110158068 | OPTICAL DISC DEVICE AND PLAYING METHOD OF OPTICAL DISC - To determine the optimum amplitude of high frequency signal for the loaded disc with a simple configuration to achieve stable playing performance, there is provided an optical disc device comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light emitted from the light source; and a controller for controlling amplitude of the high frequency signal to be superimposed on the drive signal for the light source; the optical disc device being configured to read data on an optical disc loaded therein by a signal outputted from the detector, wherein the controller determines the amplitude of the high frequency signal to be superimposed on the drive signal based on asymmetry of the signal outputted from the detector. | 06-30-2011 |
20110158074 | OPTICAL DISC DEVICE AND DISC IDENTIFICATION METHOD - To identify the type of a loaded disc, there is provided an optical disc device, comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light emitted from the light source; and a controller for controlling the amplitude of the high frequency signal to be superimposed on the drive signal, the optical disc device being configured to read data from an optical disc loaded therein by a signal outputted from the detector, wherein: the controller causes the light source to irradiate the loaded optical disc with light in a condition in which a high frequency signal different from a high frequency signal for data reading is superimposed on the drive signal; and the controller identifies a type of the loaded optical disc based on the return light from the loaded optical disc. | 06-30-2011 |
20110161994 | OPTICAL DISC DEVICE AND CONTROL METHOD OF OPTICAL DISC - An optical disc device comprising: a controller for reading data from an optical disc having a plurality of recording layers, wherein: the controller, in shifting a focus of the laser light from a first layer to a second layer, performs a first change that changes a setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to suppress peak power of the drive signal if a light density of the second layer is higher than a light density of the first layer; the controller shifts the focus from the first layer to the second layer; and the controller, after the focus has been shifted, performs a second change that changes the setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to increase the peak power of the drive signal. | 06-30-2011 |
20110205871 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING THE SAME - An optical disc drive for reading or writing information on a multilayer optical disc having three or more recording layers by irradiating the disc with a light beam includes an optical pickup for irradiating the disc with the light beam, a recording state detector for detecting data recording states at a start point of a focus jump, a transit point or transit points on a recording layer or recording layers to be passed through, and an expected landing point of a focal point of the light beam in a focus jump, and a controller for moving the optical pickup to a position where the recording states are the same at all of the start point, the transit point(s) on the recording layer(s) to be passed through, and the expected landing point if the recording states are different among those points, before starting the focus jump. | 08-25-2011 |
20110205872 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING THE SAME - An optical disc drive for reading or writing information on a multilayer optical disc having a plurality of recording layers by irradiating the disc with a light beam includes an optical pickup for irradiating the disc with the light beam, a focus error signal generator for generating a focus error signal that indicates a state of displacement of a focal point of the light beam from a recording layer based on reflection from the disc, a recording state detector for detecting a data recording state at a landing point of the focal point in a focus jump, a threshold setting unit for setting a threshold to be compared with the focus error signal based on the data recording state at the landing point, and a focus jump controller for controlling the focus jump based on a result of comparison of the focus error signal with the threshold. | 08-25-2011 |
20110216638 | OPTICAL DISC DEVICE AND TRACKING SERVO CONTROL CIRCUIT THEREFOR - In an optical disc device, a way of canceling a lens shift due to an electric offset of an output of a tracking actuator driving circuit is desired. A tracking servo control circuit contains a first operation mode for setting an output current of the tracking actuator driving circuit to generally zero and a second operation mode for supplying a predetermined potential to the input. An average potential of a push-pull signal detected in the first operation mode is acquired. An object lens is moved by a predetermined amount in both radial directions by changing a potential supplied in the second mode to acquire correlative relationship between average potential of a push-pull signal relative to a lens movement amount and the supplied potential. An offset amount is acquired from the potential and the correlative relationship to cancel the offset. | 09-08-2011 |
20120008477 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING LASER LIGHT POWER IN OPTICAL DISC DRIVE - This invention provides an optical disc drive with more accurate and stable power control for a laser light source. An optical disc drive in an embodiment of this invention includes a monitor photodetector for receiving laser light emitted by a laser light source to monitor the laser light power. The monitor diode is a photodetector for generating an electric signal corresponding to the laser light power. A laser light controller controls drive current to the laser light source based on a result of measurement by the monitor diode. The optical disc drive measures output variations of the monitor diode and controls the gain of the monitor diode based on the result of the measurement. This gain control improves accuracy and stability in laser light control so that stability in recording/reading can be attained. | 01-12-2012 |
20120008478 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING POWER OF LASER LIGHT IN RECORDING TO OPTICAL DISC - This invention provides accurate control of laser light power in a recording operation to achieve more stable recording operation. An optical disc drive in an embodiment of this invention monitors the power of laser light with a monitor diode and controls the laser light power based on the result of monitoring. The optical disc drive changes data transfer rate (recording frequency) depending on the disc radial position. The optical disc drive controls the gain of the monitor diode across the recording surface depending on the recording frequency. This control improves the accuracy in laser light power control to achieve stable recording operations by precise servo control. | 01-12-2012 |
Patent application number | Description | Published |
20100059794 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND A METHOD OF MANUFACTURING THE SAME - To provide a circuit layout design method that can prevent degradation of the circuit reliability even in highly miniaturized circuit cells. | 03-11-2010 |
20100059826 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE - To provide a technique that can maintain uniformity of semiconductor elements and wirings microfabricated, while maintaining the mounting efficiency of circuit cells onto a chip. Respective gate electrodes of an n-channel type MISFET and another n-channel type MISFET forming a NAND circuit cell are coupled to the same node, and simultaneously perform respective on-off operations according to the same input signal. These n-channel type MISFETs are arranged adjacent to each other, and electrically coupled in series. Respective gate electrodes of a p-channel type MISFET and another p-channel type MISFET forming the NAND circuit cell are coupled to the same node, and simultaneously perform respective on-off operations according to the same input signal. These p-channel type MISFETs are arranged adjacent to each other, and electrically coupled in series. | 03-11-2010 |
20100148219 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE - A technique permitting reduction in size of a standard cell is provided. In a semiconductor integrated circuit device comprising a first tap formed in a first direction to supply a power-supply potential, a second tap formed in the first direction to supply a power-supply potential and positioned so as to confront the first tap in a second direction intersecting the first direction, and a standard cell formed between the first and second taps, a cell height (distance) between the center of the first tap and that of the second tap both in the second direction is set to ((an integer+0.5)×a wiring pitch of the second-layer wiring lines) or [(an integer+0.25)×a wiring pitch of the second-layer wiring lines]. | 06-17-2010 |
20120007189 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND A METHOD OF MANUFACTURING THE SAME - To provide a circuit layout design method that can prevent degradation of the circuit reliability even in highly miniaturized circuit cells. | 01-12-2012 |
20120211840 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE - A technique permitting reduction in size of a standard cell is provided. In a semiconductor integrated circuit device comprising a first tap formed in a first direction to supply a power-supply potential, a second tap formed in the first direction to supply a power-supply potential and positioned so as to confront the first tap in a second direction intersecting the first direction, and a standard cell formed between the first and second taps, a cell height (distance) between the center of the first tap and that of the second tap both in the second direction is set to ((an integer+0.5)×a wiring pitch of the second-layer wiring lines) or [(an integer+0.25)×a wiring pitch of the second-layer wiring lines]. | 08-23-2012 |
20130075825 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND A METHOD OF MANUFACTURING THE SAME - To provide a circuit layout design method that can prevent degradation of the circuit reliability even in highly miniaturized circuit cells. | 03-28-2013 |