32results about How to "Reduced output variation" patented technology

A power supply regulation circuit is provided which can achieve a preferable constant current drooping characteristic without the need for a constant current control circuit on the secondary side. During a constant current operation, a switching element (1) is turned on so as to keep constant the on duty of secondary current passing through a secondary winding (110B) of a transformer (110), so that a constant current drooping characteristic is achieved. Further, at this moment, a current limit dictating the maximum value of drain current (ID) passing through the switching element (1) is changed between first and second levels during the on time of the switching element such that the drain current (ID) has a constant peak value.

[Abstract]Considering further promotion of high output and miniaturization of a sensor element, it is an object of the present invention to form a plurality of elements in a limited area so that an area occupied by the element is reduced for integration. It is another object to provide a process which improves the yield of a sensor element. According to the present invention, a sensor element using an amorphous silicon film and an output amplifier circuit constituted by a thin film transistor are formed over a substrate having an insulating surface. In addition, a metal layer for protecting an exposed wire when a photoelectric conversion layer of the sensor element is patterned is provided between the photoelectric conversion layer and the wire connected to the thin film transistor.

In an electrostatic capacitance diaphragm vacuum gauge, a diaphragm and a detection electrode opposing the diaphragm are arranged in a vacuum. The electrostatic capacitance diaphragm vacuum gauge measures pressure by measuring the change degree of an electrostatic capacitance between the diaphragm and detection electrode. The electrostatic capacitance diaphragm vacuum gauge includes atmospheric pressure variation factor detection units which detect atmospheric pressure variation factors as external factors that varies the pressure of the vacuum. The pressure of the vacuum is measured by subtracting information detected by the atmospheric pressure variation factor detection units.

The orbital engine or pump comprising of drive train, having several elliptical gears each rotating around focal point with focal distance defined as function of minimum vanes opening, and toroidal cylinders each having inside two impellers with radial vanes continuously rotating with oscillation through a series of identical elliptical gears with one gear on each impeller shaft and second gears in mesh located on input / output shaft out of phase allowing synchronization of cycles performed in each chamber inside toroidal cylinders positioned planetary to input / output shaft. Some of the chambers could be selectively allocated to perform suction, compression, vacuum and combustion with air, gas, steam and liquid media through efficient internal rotary valves attached to impellers or housing and in most cases, eliminating the need for external valving.

A constant current source circuit is constituted of a control voltage generation section which detects the output voltage at the output terminal so as to generate a control voltage, a reference current adjustment section which adjust a reference current based on the control voltage, and a current mirror section which outputs the output current responsive to the adjusted reference current at the output terminal. This reduces variations of the output current due to variations of the output voltage; hence, the constant current source circuit can precisely operate in a low-voltage region.

A method for making a multimode fiber optic subassembly includes alignment of an optical detector with a fiber termination of an optical fiber. The output of the optical detector (e.g. photocurrent) can be measured from light being transmitted through the optical fiber and detected by the optical detector. The end of the optical fiber and / or the optical detector can be positioned and angularly oriented in order to obtain relative maximum or peak output of the optical detector for a given position and orientation. The output of the optical detector can be monitored while mechanically manipulating, e.g. bending, flexing, shaking and / or twisting, the optical fiber, in order to verify that the positional relationship between the end of the optical fiber and the optical detector corresponds to a position and / or orientation that provides stable output from the optical detector. If the optical detector output is not stable, the end of the multimode optical fiber and the optical detector can be moved, changing the position and / or the orientation of one or both, until the output of the optical detector is stable during manipulation. If the optical detector output is stable, the end of the multimode optical fiber is fixed to the optical detector. The resulting subassembly, a fiber optic pigtail, can be made by cutting the optical fiber a short distance from the optical detector.

A power supply regulation circuit is provided which can achieve a preferable constant current drooping characteristic without the need for a constant current control circuit on the secondary side. During a constant current operation, a switching element (1) is turned on so as to keep constant the on duty of secondary current passing through a secondary winding (110B) of a transformer (110), so that a constant current drooping characteristic is achieved. Further, at this moment, a current limit dictating the maximum value of drain current (ID) passing through the switching element (1) is changed between first and second levels during the on time of the switching element such that the drain current (ID) has a constant peak value.

A method for making a multimode fiber optic subassembly includes alignment of an optical detector with a fiber termination of an optical fiber. The output of the optical detector (e.g. photocurrent) can be measured from light being transmitted through the optical fiber and detected by the optical detector. The end of the optical fiber and / or the optical detector can be positioned and angularly oriented in order to obtain relative maximum or peak output of the optical detector for a given position and orientation. The output of the optical detector can be monitored while mechanically manipulating, e.g. bending, flexing, shaking and / or twisting, the optical fiber, in order to verify that the positional relationship between the end of the optical fiber and the optical detector corresponds to a position and / or orientation that provides stable output from the optical detector. If the optical detector output is not stable, the end of the multimode optical fiber and the optical detector can be moved, changing the position and / or the orientation of one or both, until the output of the optical detector is stable during manipulation. If the optical detector output is stable, the end of the multimode optical fiber is fixed to the optical detector. The resulting subassembly, a fiber optic pigtail, can be made by cutting the optical fiber a short distance from the optical detector.

A transmissive-type target includes a target layer, and a transmissive substrate configured to support the target layer. The transmissive substrate has a pair of surfaces facing each other and is formed of polycrystalline diamond. In the transmissive substrate, one of the pair of surfaces includes polycrystalline diamond having a first average crystal grain diameter which is smaller than a second average crystal grain diameter of polycrystalline diamond included on the other surface opposing thereto. The target layer is supported by any one of the pair of surfaces.

An touch screen liquid crystal display device includes a panel driving circuit including a gate driving block, a data driving block, and a signal control block and a liquid crystal module that stores data in data pixels through a data pixel line, to which the data pixels are connected, in response to a data signal applied from the data driving block, and reads data through a read pixel line to which read pixels are connected. The read pixels are connected to the data pixels through a share line.

A laser light source (100) includes a semiconductor laser (101), a wavelength converting element (104) made of a non-linear optical crystal for converting excitation light from the semiconductor laser (101) into wavelength converted light having a wavelength different from the wavelength of the excitation light, a photodiode (109) for measuring a part of the wavelength converted light to be emitted from the wavelength converting element (104) as output light, a photodiode (110) for measuring the excitation light to be emitted from the wavelength converting element (104), and a control circuit (103), wherein the control circuit (103) simultaneously performs an output constant control of making the intensity of the wavelength converted light constant, using a current driving circuit (102), and a temperature control of adjusting the temperature of the wavelength converting element (104), using a heater (105).

A transmissive-type target includes a target layer, and a transmissive substrate configured to support the target layer. The transmissive substrate has a pair of surfaces facing each other and is formed of polycrystalline diamond. In the transmissive substrate, one of the pair of surfaces includes polycrystalline diamond having a first average crystal grain diameter which is smaller than a second average crystal grain diameter of polycrystalline diamond included on the other surface opposing thereto. The target layer is supported by any one of the pair of surfaces.

When a conversion catalyst in a catalytic converter is warmed up, a required efficiency ηtag is set such as to be within a range of less than 1 that is a value when the conversion catalyst is not warmed up and to increase with an increase in delay of an open-close timing VT of an intake valve (steps S130 to S160). A delayed amount of a target ignition timing IT* is decreased with an increase in required efficiency ηtag (closer to the value 1) (steps S170 and S180).

The data driver of a flat panel display includes: an output driver configured to output a plurality of amplified data signals for a plurality of channels corresponding to a plurality of data lines, the plurality of channels including: a plurality of amplifiers configured to amplify a plurality of input data signals and to supply the amplified data signals to the data lines; and a plurality of chopping controllers, each of the chopping controllers being coupled connected to a plurality of input terminals of a corresponding amplifier of the amplifiers and configured to receive a first control signal or a second control signal to periodically change signals applied to positive and negative input terminals from among the input terminals of the amplifiers.

Considering further promotion of high output and miniaturization of a sensor element, it is an object of the present invention to form a plurality of elements in a limited area so that an area occupied by the element is reduced for integration. It is another object to provide a process which improves the yield of a sensor element. According to the present invention, a sensor element using an amorphous silicon film and an output amplifier circuit constituted by a thin film transistor are formed over a substrate having an insulating surface. In addition, a metal layer for protecting an exposed wire when a photoelectric conversion layer of the sensor element is patterned is provided between the photoelectric conversion layer and the wire connected to the thin film transistor.

An optical scanner apparatus that oscillates a mirror to scan incident light, includes an optical scanner unit that includes a sensor that detects an oscillation angle of the mirror, and an interconnect connected to the sensor; and a shading unit that shades the sensor and the interconnect from stray light of the incident light and ambient light.

The orbital engine or pump comprising of drive train, having several elliptical gears each rotating around focal point with focal distance defined as function of minimum vanes opening, and toroidal cylinders each having inside two impellers with radial vanes continuously rotating with oscillation through a series of identical elliptical gears with one gear on each impeller shaft and second gears in mesh located on input / output shaft out of phase allowing synchronization of cycles performed in each chamber inside toroidal cylinders positioned planetary to input / output shaft. Some of the chambers could be selectively allocated to perform suction, compression, vacuum and combustion with air, gas, steam and liquid media through efficient internal rotary valves attached to impellers or housing and in most cases, eliminating the need for external valving.

The invention discloses a full-automatic efficient polishing machine. The full-automatic efficient polishing machine comprises a rotary disc capable of rotating in an indexing mode, a first side facerough polishing device, a second side face rough polishing device, a forward longitudinal polishing device, a reverse longitudinal polishing device and a transverse polishing device, wherein the firstside face rough polishing device, the second side face rough polishing device, the forward longitudinal polishing device, the reverse longitudinal polishing device and the transverse polishing deviceare arranged in the circumferential direction of the rotary disc, and a plurality of clamps evenly distributed and used for fixing products to be polished and a first motor driving one clamp to horizontally rotate are arranged in the circumferential direction of the rotary disc. According to the full-automatic efficient polishing machine, grid textures can be formed on the surface of a product, and the function of the polishing machine is expanded.

The data driver of a flat panel display includes: an output driver configured to output a plurality of amplified data signals for a plurality of channels corresponding to a plurality of data lines, the plurality of channels including: a plurality of amplifiers configured to amplify a plurality of input data signals and to supply the amplified data signals to the data lines; and a plurality of chopping controllers, each of the chopping controllers being coupled connected to a plurality of input terminals of a corresponding amplifier of the amplifiers and configured to receive a first control signal or a second control signal to periodically change signals applied to positive and negative input terminals from among the input terminals of the amplifiers.

The invention discloses a silicon hollow beam, a silicon microaccelerometer based on the silicon hollow beam, and a preparation method thereof. The silicon hollow beam comprises a beam body produced by performing dry etching on SOI silicon chips, and the cross section of the beam body is hollow. The microaccelerometer comprises a silicon sensitive structure and a silicon substrate, which are connected into one body. The silicon sensitive structure comprises a support beam and a sensitive mass block assembly. The cross section of the support beam is the said silicon hollow beam, and the sensitive mass block assembly is fixed to a mooring anchor through the support beam. The preparation method comprises the steps of adopting the silicon sensitive structure prepared by dry etching; bonding the silicon sensitive structure and the silicon substrate having a capacitance plate assembly and a lead wire electrode by adopting silicon-silicon low stress bonding, and obtaining the microaccelerometer. The invention is advantageous in that anti-interference capability is strong, device area is small, yield rate is high, cost is low, stability is high, processing quality is high, processing robustness is good, and application scope is wide.

The invention discloses a high-sensitivity pendulous micromachined silicon accelerometer and a preparation method thereof. The micromachined silicon accelerometer comprises a silicon substrate and a silicon sensitive structure which are connected into a whole; the silicon sensitive structure comprises a stress release structure, two pairs of support beams, a pair of coupling sensitive mass blocksand a pair of anchor points, the coupling sensitive mass blocks are symmetrically arranged, each coupling sensitive mass block is connected with the corresponding anchor point through one independentsupport beam and is in coupling connection with the stress release structure through the other independent support beam, and the mass center of each coupling sensitive mass block is located in the middle point of the support beam connected with the anchor point; and in the preparation method, dry etching preparation is adopted. The micromachined silicon accelerometer has the advantages that the device space utilization rate is high, the effective detection area of the sensitive mass blocks is large, the flexibility and the finished product rate are high, the cost is low, the processing qualityis high, the processing robustness is good, and the application range is wide.

Because a series of data is recorded continuously, the recording quality of data recorded in course of recording cannot be evaluated. Accordingly, the laser output cannot be controlled properly and there are a deterioration and dispersion of the recording quality. Further, when the recording lasts for a long time, the temperature in the vicinity of laser rises due to the heat from the inside of a disc drive and the recording quality is deteriorated. To solve this, a series of data to be recorded is split and recording is made intermittently in a split data unit. The recording quality is evaluated by reproducing the data recorded nearby before each split data is recorded using a duration and control is performed by reflecting the evaluation result in the laser output so that the recording quality can be maintained satisfactorily over a series of the whole data to be recorded. Further, control is performed so that good recording quality can be maintained even in the recording that lasts for a long time by stopping the function of each part that ought to be operated even at recording or reproduction inside the disc drive in the duration, thereby suppressing a temperature rise.

A method for producing an optical coupling element of the present invention includes the steps of: determining the mounting position of a light-emitting element and a light-receiving element on the front surface of the header portion of each lead frame based on the current amplification factor of the light-receiving element to be mounted; determining the bending angle of each header portion and a distance between the two elements after being bent by calculation such that a predetermined current transfer ratio and an internal insulation distance required by the optical coupling element to be produced are obtained; detecting the determined mounting position by detecting intersections of V-shaped grooves in a grid pattern formed on the front surface of each header portion; mounting each element onto the detected position of the front surface of each header portion while detecting the concave-convex shape; and bending each header portion after mounting each element at the bending angle determined by calculation.

An optical scanner apparatus that oscillates a mirror to scan incident light, includes an optical scanner unit that includes a sensor that detects an oscillation angle of the mirror, and an interconnect connected to the sensor; and a shading unit that shades the sensor and the interconnect from stray light of the incident light and ambient light.

The invention discloses a high-sensitivity torsion-type silicon micro-accelerometer and a preparation method thereof. The silicon micro-accelerometer includes a silicon substrate and a silicon sensitive structure connected as one. The silicon sensitive structure includes a stress release structure, two pairs of support beams, a pair of Coupling sensitive masses and a pair of anchor points, a pair of coupled sensitive masses are symmetrically arranged, and each coupled sensitive mass is connected to the anchor point through a separate support beam, and connected through another separate support beam It is connected and coupled with the stress release structure, and the centroid of each coupled sensitive mass is located at the midpoint of the support beam connected with the anchor point; the preparation method is prepared by dry etching. The invention has the advantages of high device space utilization rate, large effective detection area of ​​sensitive mass blocks, high sensitivity, high yield, low cost, high processing quality, good processing robustness and wide application range.

Because a series of data is recorded continuously, the recording quality of data recorded in course of recording cannot be evaluated. Accordingly, the laser output cannot be controlled properly and there are a deterioration and dispersion of the recording quality. Further, when the recording lasts for a long time, the temperature in the vicinity of laser rises due to the heat from the inside of a disc drive and the recording quality is deteriorated.To solve this, a series of data to be recorded is split and recording is made intermittently in a split data unit. The recording quality is evaluated by reproducing the data recorded nearby before each split data is recorded using a duration and control is performed by reflecting the evaluation result in the laser output so that the recording quality can be maintained satisfactorily over a series of the whole data to be recorded. Further, control is performed so that good recording quality can be maintained even in the recording that lasts for a long time by stopping the function of each part that ought to be operated even at recording or reproduction inside the disc drive in the duration, thereby suppressing a temperature rise.

The invention discloses a silicon hollow beam, a silicon microaccelerometer based on the silicon hollow beam, and a preparation method thereof. The silicon hollow beam comprises a beam body produced by performing dry etching on SOI silicon chips, and the cross section of the beam body is hollow. The microaccelerometer comprises a silicon sensitive structure and a silicon substrate, which are connected into one body. The silicon sensitive structure comprises a support beam and a sensitive mass block assembly. The cross section of the support beam is the said silicon hollow beam, and the sensitive mass block assembly is fixed to a mooring anchor through the support beam. The preparation method comprises the steps of adopting the silicon sensitive structure prepared by dry etching; bonding the silicon sensitive structure and the silicon substrate having a capacitance plate assembly and a lead wire electrode by adopting silicon-silicon low stress bonding, and obtaining the microaccelerometer. The invention is advantageous in that anti-interference capability is strong, device area is small, yield rate is high, cost is low, stability is high, processing quality is high, processing robustness is good, and application scope is wide.

A constant current source circuit is constituted of a control voltage generation section which detects the output voltage at the output terminal so as to generate a control voltage, a reference current adjustment section which adjust a reference current based on the control voltage, and a current mirror section which outputs the output current responsive to the adjusted reference current at the output terminal. This reduces variations of the output current due to variations of the output voltage; hence, the constant current source circuit can precisely operate in a low-voltage region.