82results about How to "Correct offset" patented technology

Methods and devices that provide reduced transverse motion in a curved ultrasonic blade and/or ultrasonic surgical instrument with functional asymmetries. An ultrasonic blade in accordance with embodiments of the present invention includes a curved functional portion of an ultrasonic blade, wherein the center of mass of the curved functional portion lies on the mid-line of a waveguide delivering ultrasonic energy to the blade. Balancing in accordance with embodiments of the present invention, using placement of the center of mass of the curved portion of the blade appropriately, provides blade balance in a proximal portion of the blade, without reduction of mass and inherent stress increase proximal to the end-effector.

A digital servo control system for disk drives is an "embedded" system-one in which servo control information is embedded on the same disk surface as the user data. In contrast to known embedded-servo systems in which a space-consuming series of many dibit pairs is present, the present system provides only a single dibit pair in a fractional positional error (PESF) area. Thus, the disk drive's read head encounters only a single dibit pair per sample period (or per data sector), thus saving valuable disk space that may be used for user data. Various pre-processing methods may be provided so as to pre-process the measurement derived from the single dibit pair per sample period (or data sector), so as to compensate for non-ideal characteristics of the dibit measurement. The system thus provides an accurate and robust servo control system, while sacrificing a minimum amount of valuable disk space to the servo information field.

A capacitance detector, used in an area sensor having a matrix of detection lines, detects minute capacitances near intersections of a plurality of column lines and a plurality of row lines. The capacitance detector includes a column-line driver for outputting to the column lines a signal that rises in response to a first voltage and then falls in response to a second voltage; a row-voltage outputter for outputting a third voltage corresponding to a current for charging the capacitance at each of the intersections when the column lines are driven by the first voltage and for outputting a fourth voltage corresponding to a current for discharging the capacitance at each of the intersections when the column lines are driven by the second voltage; and a calculator for calculating the difference between the third voltage and the fourth voltage. The difference is calculated at each of the intersections.

A rotation angle detecting device includes a permanent magnet member, a pair of magnetic sensor elements disposed in a magnetic field formed by the permanent magnet member to provide a pair of output voltage signals when the magnetic field changes as the rotating object rotates; and a rotation angle calculating unit. The rotation angle calculating unit calculates a phase difference between the pair of output voltage signals from a magnitude of the output signal of one of the magnetic sensor elements when detecting a specific magnitude of the output signal of the other magnetic sensor elements whose phase angle is known.

Offset in the ejection direction of target material droplets is corrected in order to stabilize EUV output in an EUV light source device. An extreme ultraviolet light source device includes a droplet generation device 110 that outputs target material droplets 101 towards a predetermined plasma emission point 103; a charging device 130 that charges the target material droplets 101; a trajectory correction device 140 that generates a force field in the trajectory to correct the travel direction of the charged target material droplets 101a so that the charged target material droplets 101a travel towards the plasma emission point 103; and a laser light source 150 that irradiates, at the plasma emission point 103, a laser beam onto the charged target material to generate plasma thereby.

In a data transfer device which cancels an offset of a differential amplifier for amplifying a received signal and an offset caused by characteristics of a differential transmission line and selects optimum conditions such as pre-emphasis amount of an output pre-emphasis circuit, a first chip (transmission side LSI=transfer engine 210) and a second chip (reception side LSI=multiplexing engine 330) are connected to each other through differential transmission line 430 and a SerDes (serializer) 401 and a SerDes (deserializer) 402 are used to make signal transmission, so that optimum setting conditions of an offset amount of an offset cancellation circuit included in an input buffer amplifier and a pre-emphasis amount of pre-emphasis circuit included in an output buffer are decided in training using a training PRBS generator 560 and a training PRBS comparator 570.

Embodiments of the invention include a method of placing a substrate on a support. In an embodiment of the invention, the method includes determining a position of the substrate relative to a reference position via a sensor which outputs a sensor signal to a control unit, the determining including detecting the position of the substrate in a chamber, and determining a gripping position on the substrate; gripping the substrate at the gripping position with a gripper controlled by the control unit, and providing the substrate in a defined position on the support member, the providing including moving the substrate to a fixed position relative to the support member such that the center of the substrate arrives at a predetermined position on the support member.

The invention provides a method for measuring the position of polyimide thin film and an alignment marker. The method for measuring the position of the polyimide thin film comprises the following steps of providing a substrate, and printing the alignment marker on the substrate, wherein the alignment marker is a symmetrical regular graph, and the center of the alignment marker and the center of the substrate coincide; taking the center of the alignment marker as an original point, marking scales on the alignment marker according to preset spacing; preparing the polyimide thin film on the surface, printed with the alignment marker, of the substrate, measuring the position of the polyimide thin film according to the alignment marker, and judging whether or not offset of the prepared polyimide thin film occurs. Through the adoption of the method for measuring the position of the polyimide thin film and the alignment marker, the offset amount of the polyimide thin film prepared on the substrate can be accurately measured.

A reference point defined on a two dimensional or three dimensional orthogonal coordinate space and scale reference of respective axes are estimated based on a distribution on the three dimensional orthogonal coordinate space at the time when respective axial components of an acceleration data group comprised of plural acceleration data including multi-axial components and a importance group pertaining to the acceleration data group, and the respective acceleration data are corrected based on the estimated reference point and scale reference of the respective axes.

The invention relates to a sheet medium treatment technology, and particularly relates to a paper money correcting device capable of effectively adjusting the gesture of the paper money which is fed one by one. The paper money correcting device comprises a money inlet channel, an entrance gate, a paper money detection mechanism, and a gesture correcting mechanism, wherein the money inlet channel is used for loading and guiding the fed money; the entrance gate is arranged at the money inlet tail end of the money inlet channel and selectively blocks the money inlet channel by power control; the paper money detection mechanism is arranged in front of the entrance gate and used for detecting whether paper money exits in front of the entrance gate; the gesture correcting mechanism is arranged inside the money inlet channel for adjusting the effective money inlet width and correcting the fed paper money; the gesture correcting mechanism comprises at least two movable balls; and the movable balls are movably arranged on an upper channel plate in parallel along the direction vertical to the paper money inlet direction and freely extend into the money inlet channel. The device can actively restrict artificial money inlet operation, corrects the offset before the paper money enters a transfer passage to the maximal extent, reduces the possibility of money blockage caused by paper money deviation, and improves the reliability of the device.

The invention provides a miniature anti-shake iris recognition module set. The miniature anti-shake iris recognition module set comprises a camera module set body, a detection device and an anti-shake mechanism. When the module set shakes when being operated, the detection device on the camera module set body detects the displacement difference of the position of the optical axis of a lens inside a lens barrel on a photosensitive chip and the center position of the photosensitive chip; the displacement difference is converted into electrical signals, and the electrical signals are transmitted to a driving chip; the driving chip calculates displacement quantity to be compensated and controls current quantity on the coil of the lens barrel; and a magnetic attractive force or repulsive force is generated between a generated electromagnetic force and a magnetic substance, so that the relative displacement quantity of the lens barrel between the optical axis and the center position of the photosensitive chip can be compensated. According to the miniature anti-shake iris recognition module set provided by the invention, the miniature anti-shake mechanism is adopted, problems such as the problem of incapability of quickly recognizing iris images which is caused by the providing of external support and the tremble of the hands of people can be avoided, the one-time recognition success rate of a hand held iris terminal device can be improved, and an iris recognition process can be completed stably with one step.

The present invention relates to a system and method for reducing image artifacts for a CMOS camera used as an optical detector for a line confocal fluorescent imager. The method for reducing image artifacts in a monochromatic image comprises subtracting RGB channel offset mismatch; and correcting random row offset for each row. Preferably, the method also comprises correcting random column offset and gain. Optionally, the method also comprises clipping of defective pixels, and/or subtracting dark current. When the monochromatic image is a fluorescence image, the method also comprises a step of compressing CMOS camera noise. Also provided are a system for reducing image artifacts in a monochromatic image from a CMOS camera, as well as an image artifact reduction system for a CMOS camera-based line confocal fluorescent microscope.

When an external magnetic field is applied to a sensor unit 12 for various causes, a characteristics curve does not pass through an intersection point of resistance (voltage) and a magnetic field and is offset. That is, an offset voltage (Roff) occurs. In the present invention, in order to determine a correction value for canceling the offset voltage, a difference between output voltages is determined from two stages in which a bias magnetic field is inverted, and the bias magnetic field is controlled until the difference becomes approximately zero. Then, the corresponding bias magnetic field (the electrical current value) when the difference between the output voltages becomes approximately zero is set as a correction value (correction bias). As a result, since correction can be performed even if an offset voltage is applied, it is possible to accurately perform magnetic detection.

The invention discloses a ternary microstrip dipole antenna based on a PEG and a Yagi antenna structure. By adding a planar quasi-Yagi antenna as a third radiation source to a binary dipole array antenna, and further upward bending the two ends of a radiation excited dipole to reduce the lateral dimension, the ternary microstrip dipole antenna is constituted. In an antenna design process, the dimension of the antenna is continuously adjusted by HFSS simulation so as to achieve wide matching and wide decoupling bandwidth. The ternary microstrip dipole antenna achieves the coupling suppression matching of three ports without using an additional matching circuit, and can provide theoretical guidance for the circuit design of a multi-antenna array decoupling network.

The invention discloses an adaptability position correction device which is situable for remote of a mechanical arm. The correction device comprises a first flat plate and a second flat plate that are connected to a remote, a central assembly connected to the second flat plate, and a position adaptability assembly. The two ends of the position adaptability assembly are respectively connected to the first flat plate and the second flat plate. The position adaptability assembly is provided with at least a groove between the two ends. An acute angle is ormed between the opening direction of the groove and an on-line machine between the two ends. Therefore, the groove of the adaptability position correction device helps to effectively compensate the offset of the mechanical arm, caused by size errors, rigid factors or positioning errors.

The invention discloses a broadband submarine sound signal processing method of wavelet trans-dimension correlation filtering, and relates to the submarine sound signal processing. The method comprises the following steps: static discrete wavelet transform of a measured signal; translation correction of a wavelet coefficient; wavelet coefficient feature analysis of a signal and an interfering noise; wavelet coefficient correlation analysis in different scales; selection of a filtering threshold value coefficient; and threshold filtering and reconstructing of the wavelet coefficient. The staticdiscrete wavelet transform is used, and the down-sampling is not performed on the wavelet coefficient obtained after the transform, the length of the original signal is not changed, and the samplingloss of the signal features is avoided. An offset problem of the wavelet coefficient after the wavelet decomposition is corrected, and the data processing precision is improved. A problem that a signal feature value cannot be extracted because a correlation coefficient of the neighboring scales can be weaker is solved through the wavelet coefficient trans-dimension correlation filtering. Accordingto the wavelet decomposition coefficient features of a noised-signal, the filtering threshold valve coefficient is self-adaptively selected, and problems that the filtering threshold valve can be oversize or undersize are solved.

Improved maneuverability, improved followability towards a target braking force and enhanced brake feeling when a low braking force is being effected may be achieved. A brake controller unit may include a clearance estimator which may be configured to use a rotational angle θ of a motor to estimate a clearance, inclusive of negative values, between a frictional material and a brake. A target braking force F_r may be compared with a switch-determining braking force F_rsw, so that clearance control based on a target clearance C_r may be performed when the frictional material is in approximate-contact state corresponding to the target braking force F_r being low, and so that braking force control may be performed when it is equal to or greater than the switch-determining braking force F_rsw.

The invention provides a deep hole machining device and method. The deep hole machining device comprises a machine tool body, the machine tool body is fixedly provided with a drilling power head, a deep hole drilling head is installed on the drilling power head, a workbench is slidably installed on the machine tool body through a guide rail, the workbench and the machine tool body are further connected through a screw rod nut mechanism, a workpiece is clamped on the workbench, the deep hole machining device is further provided with a laser assisted calibration device and an electromagnetic deviation correcting device, a deviation correcting hole is punched in the position of the workpiece to be machined by laser, a laser beam emitted by a laser emitting device is made to fall on a photoelectric collector, and deviation of the deep hole drilling head is corrected in real time through the electromagnetic deviation correcting device. By means of adoption of the above scheme of the deep hole machining device and method, the structure is simplified, and improvement of the machining precision is facilitated; by means of the arrangement of the laser assisted calibration device, online precision calibration can be realized, and deviation errors can be detected in real time according to the collimating laser shape change and different positions of the photoelectric collector where the laser falls on; and by means of the arrangement of the electromagnetic deviation correcting device, the deviation of the deep hole drilling head can be corrected in real time, and the machining precision is further improved.