446results about How to "Accurate direction" patented technology

An autostereoscopic multi-user display comprising a sweet-spot unit which is directionally controlled by a tracking and image control device (160), wherein an illumination matrix (120) is provided with separately activatable illuminating elements (11 . . . 56), in addition to an imaging device used to alternatingly image active illuminating elements, for making expanded sweet spots (SRI/SR2) visible to various eye positions (EL1/ERI, EL2/ER2) of viewers observing alternating images or a stereoscopic image sequence on a transmissive image matrix (140) with the aid of directed beams (B1R . . . B5L). According to the invention, the imaging device comprises an imaging matrix (110) provided with a plurality of lens elements (111 115) whose focal length is small in order to image the active illuminating elements in an enlarged manner onto the sweet spots (SRI/SR2), and a field lens (171), which follows the imaging matrix (110), in order to keep the distances of the activated illuminating elements between adjacent beams (B1, B2,B4, B5) as constant as possible and in order to assist selection of the directions (D1. . . D5) with the illumination matrix (120) for the beams.

Micro-regional force application improves the control of the orthodontic movement of teeth in all six degrees of freedom. Micro regional force application utilizes an elastic repositioning appliance, a tooth positioner, a polymeric shell, or preprogrammed series of polymeric shells. The key components of the invention are the envelope of freedom, the force applicators, force couplers, counterpart coupling, vector modifiers, seating guides, decouplers, and forced balance points. Further, computerized finite element analysis determines the center of resistance and the center of rotation for each tooth to be moved. The present invention gently rotates and translates one or more teeth to a desired straight position within a treatment plan.

A port device for implanting in a patient for subcutaneous access to the vascular system of the patient. The device includes a housing provided with apertures, each for receiving and retaining a needle. The housing is further provided with lock structure for locking catheters to the housing. The housing is configured internally to provide flow paths extending between needles disposed in the apertures and the catheters.

An image sensor is installed in the vicinity of a projection lens. The image sensor images a projected and displayed image and a screen. A projection display area and a screen area are detected from the image imaged by the image sensor. An inputted image data is corrected so that the projection display area matches the screen area. The image to be displayed is automatically displayed in a shape, which matches a display surface of the screen.

A displacement measurement method for achieving, at each position of interest, high accuracy measurement of a displacement, a velocity and a strain in an actually generated beam direction by measuring the beam direction angle from ultrasound echo data. The method includes the steps of: generating an ultrasound echo data frame through scanning an object in a lateral direction with an ultrasound steered beam having one steering angle; calculating both a beam direction and a frequency in the beam direction based on an azimuth angle φ=tan⁻¹(fy/fx), a polar angle θ=cos⁻¹[fz/(fx²+fy²+fz²)^1/2], and a frequency (fx²+fy²+fz²)^1/2 in the case where first spectral moments calculated from local ultrasound echo data at plural different temporal phases are expressed by a three-dimensional frequency vector (fx, fy, fz); and calculating a displacement component in the beam direction at each position of interest generated between plural different temporal phases.

A pressing machine for a liner comprises a programmable logic controller (PLC) control system, a frame, a clamping mechanism, a plugging mechanism, a feeding mechanism, a pushing mechanism and a pressing mechanism. The clamping mechanism is arranged on the upper portion of the frame. A working platform is arranged on the lower portion of the frame. The plugging mechanism is fixedly arranged on the lower end surface of the working platform and corresponding to a positioning hole of the working platform. The pushing mechanism is arranged on a pressing plate of the clamping mechanism. The pressing plate is provided with a transversal linear slide. The feeding mechanism and the pressing mechanism are matched and respectively connected with the pushing mechanism through a mounting plate. The clamping mechanism, the plugging mechanism, the feeding mechanism, the pushing mechanism and the pressing mechanism are all controlled by the PLC control system. The pressing machine is adaptable to assembling of the liner of an oil pump cylinder body of an engine, and capable of realizing automatic operation, improving working efficiency, reducing labor intensity and improving products quality.

An apparatus comprises a test signal generator (401) which generates an ultrasonic test signal by modulating an audio band test signal on an ultrasonic signal. The ultrasonic test signal is radiated from a parametric loudspeaker (403) and is demodulated by non-linearities in the air. A reflected audio signal may arise from reflections of an object, such as a wall. An audio band sensor (405) generates an audio band captured signal which comprises the demodulated reflected audio band signal. A distance circuit (407) then generates a distance estimate for the distance from the parametric loudspeaker (403) to the object in response to a comparison of the audio band captured signal and the audio band test signal. Specifically two signals may be correlated to determine a delay corresponding to the full path length. Based on the distance estimates an audio environment may be estimated and a sound system may be adapted accordingly.

A method for loadbalancing in a network environment is provided that includes receiving a primary create request from an end user for a communications link provided by a network node and communicating a response to the end user in order to establish a communication session. A selected one of a plurality of network nodes is identified to facilitate the communication session based on a number of packet data protocol (PDP) contexts associated with one or more of the network nodes.

The invention discloses a random sampling consistency-based characteristic line detection method for a three-dimensional point cloud. The method comprises the following steps of: detecting a plurality of planes in the point cloud based on random sampling consistency; and applying the random sampling consistency to boundary points, which are taken as candidate points, of each plane parameterization area so as to obtain a final characteristic line. Therefore, the influences of noise, exterior points and data loss are reduced effectively, the detection robustness of the characteristic line is enhanced greatly and time efficiency is improved.

The invention provides a method for correcting navigation deviation and a navigation display adopting the same. The method comprises the steps of: matching with a given electronic map through the moving and running directions of the coordinates of a vehicle, pointing out a currently selected road, obtaining matching degrees of candidate road sections by means of a matching degree function by taking the road section and the vehicle running direction as one parameter and taking an Euclidean distance from a measuring point to the candidate road section as the other parameter, and selecting the matching road section with the maximum matching degree. By means of the invention, the deviation of an inertial system, caused by gyro drift, can be eliminated, and errors can be corrected in real time to obtain the accurate running position and direction of the vehicle.