2153results about How to "Precise processing" patented technology

A standard medical or surgical tool's axis is located by attaching to the tool a plurality of a location indicating elements or markers having a known geometric or spatial relationship, and placing the tool in a tool calibrator that supports the tool in a manner that allows tools of different diameters to be rotated while maintaining the tool's axis in a fixed or stable orientation. As the tool is rotated, a marker locating system tracks the positions of the markers on the tool and then extrapolates or determines the axis of rotation with respect to the markers clamped to the tool. The tool calibrator has a second set of position indicating elements or markers with fixed geometric or spatial relationship with one another and with respect to a stop, against which the end or tip of the tool is placed.

A method and system for imaging an artery contained in an arterial tree. A microprocessor generates a three-dimensional reconstruction of the arterial tree from two or more angiographic images obtained from different perspectives. The orientation of the axis of the artery in the arterial tree is then determined, and a perspective of the artery perpendicular to the axis of the artery is determined. A three dimensional reconstruction of the artery from angiographic images obtained from the determined perspective is then generated.

A control system simultaneously controls a multi-zone process with a self-adaptive model predictive controller (MPC), such as temperature control within a plastic injection molding system. The controller is initialized with basic system information. A pre-identification procedure determines a suggested system sampling rate, delays or “dead times” for each zone and initial system model matrix coefficients necessary for operation of the control predictions. The recursive least squares based system model update, control variable predictions and calculations of the control horizon values are preferably executed in real time by using matrix calculation basic functions implemented and optimized for being used in a S7 environment by a Siemens PLC. The number of predictions and the horizon of the control steps required to achieve the setpoint are significantly high to achieve smooth and robust control. Several matrix calculations, including an inverse matrix procedure performed at each sample pulse and for each individual zone determine the MPC gain matrices needed to bring the system with minimum control effort and variations to the final setpoint. Corrective signals, based on the predictive model and the minimization criteria explained above, are issued to adjust system heating/cooling outputs at the next sample time occurrence, so as to bring the system to the desired set point. The process is repeated continuously at each sample pulse.

A device and method for measuring deviations in shape of a generally cylindrical workpiece is disclosed. The device enables measurement of a number of shape-defining parameters while the workpiece is positioned in a machine tool, so that the workpiece does not have to be removed from the machine tool in order for the measurements to be taken. A steadying rest, for use on machine tools to hold a workpiece, especially one having a longitudinal central axis that is rotationally unsymmetrical or unstable with respect to the machining tool, in position to enable measurement of the shape defining parameters and shape deviations while the workpiece is mounted on the machine tool, is also disclosed.

A method and apparatus for indexing, searching, and retrieving data from data sets. Data sets may reside in the same database or be distributed across different databases. Data sets, whether within the same or distributed databases, may have the same format or heterogeneous formats. Source data sets are represented with mapping tables and inverted or index tables. Native fields of databases described in source tables are mapped to international or specialized standards. Source data fields that map to the standard field searched upon are identified, and objects satisfying a query's request are identified based upon the standard fields searched. Values are retrieved from the identified objects.

An image recording and reproducing apparatus, an image pickup apparatus, and a chromatic aberration correcting method capable of performing excellent correction processing of an aperture amount of an iris and a lens image height of an object in an image pickup lens are provided.

An output signal from a camera signal processing circuit 4 is selected by a switch 5 to be supplied to a chromatic aberration correction unit 6. An aperture amount of an iris 31 provided in an image pickup lens 1 and coordinates of a pixel, to which correction processing is performed, from the chromatic aberration correction unit 6 are supplied to a conversion ratio calculation unit 10. A driving state such as a zoom focal length and focal position of the image pickup lens 1 and a camera shake correction vector are supplied to the conversion ratio calculation unit 10. Then, a conversion ratio for each color is obtained to be supplied to the chromatic aberration correction unit 6. Further, a signal corrected in the chromatic aberration correction unit 6 is compressed in a data compression circuit 15 to be supplied to a recording medium in a recording and reproducing apparatus 17. A signal reproduced from the recording and reproducing apparatus 17 is decompressed in a data decompression circuit 18 to be supplied to the switch 5. Accordingly, picture-quality degradation occurring in a miniaturized image pickup lens can be corrected by processing a picked-up image signal, and excellent correction processing can be performed on an aperture amount of an iris and a lens image height of an object in the image pickup lens.

As a solution to the problem of distributed knowledge of data object definitions, data object definitions are removed from the source code. A Meta Data Service is created and made available on a network which knows the definitions of all of the objects that are used by applications that are designed to use the Meta Data Service. When an object is created, the Meta Data Service creates and stores a meta definition for the object. Data objects are passed over a network in a “soft” format. Applications within a distributed data processing system are designed in such a manner such that, at any stage of object processing, an application does not assume to understand the definition or structure of an object, nor is an application hard-coded with the object definitions. At each stage, an application queries the Meta Data Service for the meta definition of the object before proceeding with the processing of an object. The application then receives a meta definition for the data object that allows the application to perform properly tailored processing for the data object.

A DC/DC converter for driving a load is provided. The DC/DC converter includes an inductor, a switch, a capacitor and a rectifier element. The switch and the inductor are coupled in series between a first common level and a second common level. The capacitor and the rectifier element are coupled in series between the first and second terminal of the switch or the inductor. The load is coupled between a coupling point of the capacitor and rectifier element and the second common level, wherein the coupling point of the capacitor and rectifier element outputs an output voltage to drive the load. A control terminal of the switch is switched between open circuit state and short circuit state according to a control signal.

The present invention provides a technique for performing gamma correction processing when there are a plurality of characteristic areas, each of which is characterized by the high frequency in a luminance histogram to improve the impression of contrast. According to the present invention, a luminance characteristic detector (4) detects the luminance of an input image signal and a microcomputer (5) calculates an APL and a luminance histogram of an input image signal. A gamma correction circuit (6) performs the gamma correction processing in response to the luminosity of the input image signal by use of the result of the calculation carried out by the microcomputer (5). Then, if there are a plurality of characteristic areas, each of which is characterized by the high frequency in the luminance histogram, a characteristic emphasis circuit (7) performs grayscale extension processing for the plurality of characteristic areas. This makes it possible to perform the most suitable processing in response to the input image signal so that the impression of contrast is improved.

A receiver circuit of the modem is coupled to receive a continuous analog signal from a communication channel. This analog signal includes both packet and idle information. A burst mode protocol is also provided, in which packets of digital information are modulated by a transmitter circuit of the modem, thereby converting the packets of digital information into analog signal bursts of discrete duration. These analog signal bursts are transmitted from the transmitter circuit to a telephone line. A receiver circuit monitors the telephone line to detect the analog signal bursts. Upon detecting the presence of the analog signal bursts on the telephone line, the receiver circuit demodulates the analog signal bursts using full processing capabilities of the receiver circuit. However, upon detecting the absence of the analog signal bursts on the telephone line, the demodulating function of the receiver circuit is disabled. The burst mode protocol enables multi-drop and multi-cast operation, as well as reducing required DSP resources.

A method of performing network modification in a telecommunications network is disclosed. The method comprises storing a database comprising a master inventory defining network resources available in the network. A network modification is performed by a process comprising modifying the database storing the master inventory; and modifying the network in dependence on the modified database. The method can be used in the management of telecommunications systems. A network planning method is also disclosed.

A training method and apparatus to train a call assistant to operate a telephone relay system for the hearing impaired that uses a re-voicing technique to produce near real-time transcription of a telephone conversation for display on a caption telephone or other device. The invention simulates an actual relay call as realistically as possible and produces a report on the skill of the particular call assistant being trained.

Improved techniques and systems to calibrate an electronic device that is providing activity sensing are disclosed. The activity being sensed can, for example, correspond to walking or running by a user. In one embodiment, calibration can be performed by a portable electronic device so that activity data it receives from a remote sensor device can be more accurately processed. The improved techniques and systems to calibrate can be used to monitor, process, present and manage data captured by a remote sensor. The portable electronic device can also offer a convenient user interface that can be visual and/or audio based, customized to a particular application, user-friendly and/or dynamic. The portable electronic device can pertain to a portable media player and thus also provide media playback.

A laser light source includes a light source section for outputting pulse laser light λ₁, λ₂ with a mutually identical repetition frequency, an optical amplification section for amplifying and outputting the pulse laser light λ₁, λ₂ output from the above light source section by means of a common optical amplification medium, an optical demultiplexing section for mutually demultiplexing pulse laser light λ₁, λ₂, an optical multiplexing section for multiplexing and outputting the pulse laser light λ₁, λ₂ demultiplexed in the above optical demultiplexing section, and an optical path length difference setting section for adjusting an optical path length difference between the pulse laser light λ₁, λ₂ in between the optical demultiplexing section and the optical multiplexing section.