152results about How to "Enhanced output signal" patented technology

A method and system for providing a magnetic element capable of being written using spin-transfer effect while generating a high output signal and a magnetic memory using the magnetic element are disclosed. The magnetic element includes a first ferromagnetic pinned layer, a nonmagnetic spacer layer, a ferromagnetic free layer, an insulating barrier layer and a second ferromagnetic pinned layer. The pinned layer has a magnetization pinned in a first direction. The nonmagnetic spacer layer is conductive and is between the first pinned layer and the free layer. The barrier layer resides between the free layer and the second pinned layer and is an insulator having a thickness allowing electron tunneling through the barrier layer. The second pinned layer has a magnetization pinned in a second direction. The magnetic element is configured to allow the magnetization of the free layer to change direction due to spin transfer when a write current is passed through the magnetic element.

A method and system for providing a magnetic element capable of being written using spin-transfer effect while generating a high output signal and a magnetic memory using the magnetic element are disclosed. The magnetic element includes a first ferromagnetic pinned layer, a nonmagnetic spacer layer, a ferromagnetic free layer, an insulating barrier layer and a second ferromagnetic pinned layer. The pinned layer has a magnetization pinned in a first direction. The nonmagnetic spacer layer is conductive and is between the first pinned layer and the free layer. The barrier layer resides between the free layer and the second pinned layer and is an insulator having a thickness allowing electron tunneling through the barrier layer. The second pinned layer has a magnetization pinned in a second direction. The magnetic element is configured to allow the magnetization of the free layer to change direction, due to spin transfer when a write current is passed through the magnetic element.

An adaptive contrast enhancement (ACE) method and apparatus provide a natural enhancement in accordance with the time-varying characteristics of a video sequence. Characteristics of a time varying video sequence are specified and a nonlinear transform over the input video sequence is performed to enhance mainly the contrast of the input. A probability density function (PDF) of a time varying input video sequence is computed and then some predetermined video parameters relating to contrast is extracted from the PDF. Based upon the extracted video parameters, a nonlinear transform function is then constructed and updated as a look up table (LUT), which is synchronized with the associated video picture or field SYNC signal. The transform LUT is then applied to the input video to provide an enhanced video output signal.

A method for imaging during ablation procedures using ultrasound imaging is provided. The method includes obtaining input image data about an ablation region, wherein the image data comprises back scatter intensity, and applying a dynamic gain curve based on the image data to obtain an output signal for use in enhancing the visibility of the ablation region.

Outputs from a plurality of different ambient condition sensors are cross correlated so as to adjust a threshold value for a different, primary, sensor. Cross-correlation processing can be carried out locally in a detector or remotely. To minimize false alarming, the alarm determination can be skipped if the output from the primary sensor does not exhibit at least a predetermined variation from an average value thereof.

Systems and methods for enhancing slew control of output signals. An output driver receives an input signal and controllably increases the gain of that signal to provide a high quality output signal for use by an electronic device coupled thereto. The output driver includes an operational amplifier that maintains stability of the output signal through a feedback of the output signal. A control circuit supplies a signal to the output driver such that the driver to improve the shape of the output signal as the input signal is applied. After the operational amplifier regains control, the control circuit disengages. One embodiment of the present invention may be particularly useful as a USB output driver.

An embodiment of a differential output driver includes a driver to generate an inverted output signal in response to an input signal and a first control signal, and to further generate an output signal in response to an inverted input signal and a second control signal. The differential output driver also includes a controller to generate the first control signal and the second control signal in response to detecting a voltage difference between a first detected voltage difference between a reference voltage and the output signal, and a second detected voltage difference between the reference voltage and the inverted output signal.

A filter for generating an audio output signal includes a plurality of audio output signal samples based on two or more input microphone signals. The audio output signal and the two or more input microphone signals are represented in a time-frequency domain, wherein each of the plurality of audio output signal samples is assigned to a time-frequency bin of a plurality of time-frequency bins. The filter includes a weights generator being adapted to receive, for each of the plurality of time-frequency bins, direction-of-arrival information and weighting information. Moreover, the filter includes an output signal generator for generating the audio output signal.

Apparatus and methods are described for selecting which of a plurality of simultaneously activated keys in a keyboard based on capacitive sensors is a key intended for selection by a user. In embodiments of the invention keys are preferentially selected as the user intended key based on their positions within the keyboard. Thus a key which is frequently wrongly activated when a user selects another key, e.g. because the key is adjacent the intended key and the user normally passes his finger over it while approaching the desired key, can be suppressed relative to the desired key based on their relative positions. For example, keys may be associated with predefined rankings according to their position within the keyboard and in use keys are preferentially select according to their rankings. Alternatively, signals from the keys may be scaled by weighting factors associated with their positions and a key selected according to the weighted signals.

A PLL and DLL are designed such that the power consumption is reduced, the size is reduced, the band width of the locked loop is increased, and the reliability is improved. There are provided a phase comparator for measuring the value of a feedback signal in synchronism with an input signal and outputting a phase signal representing the lead or lag of the phase of the feedback signal, a counter for increasing by one the number of bits representing “H” in a control signal when the phase signal represents the lead of the phase or decreasing by one the number of bits representing “H” in the control signal when the phase signal represents the lag of the phase, and a ring oscillator for increasing the oscillation period when the number of bits representing “H” in the control signal increases or decreasing the oscillation period when the number of bits representing “H” decreases.

A suspended capacitive fingerprint sensor includes a substrate, capacitive sensing units disposed on the substrate and one or more insulation protection layer. Each of the capacitive sensing units includes a fixed electrode, a suspended electrode, and a chamber between the fixed electrode and the suspended electrode. The insulation protection layer covers the capacitive sensing units, so that the capacitive sensing units sense a fingerprint of a finger above the insulation protection layer. A method for manufacturing the suspended capacitive fingerprint sensor is also provided.

A delay circuit is constructed by connecting taps TAP0-n for providing with a unit delay time (τ) in series on multiple stages. Each tap has the same configuration and an objective signal is inputted to a signal input terminal IN1. The output terminal of a preceding stage tap is connected to a between-stages connecting terminal IN2. An output terminal O is connected to the between-stages connecting terminal of a next stage tap. The signal input terminal and the between-stages connecting terminal are connected to one input terminal of NAND gates 1, 2 and a tap selection signal is inputted to the other input terminal. The output terminal is connected to a NAND gate 3. One of the NAND gates 1, 2 functions as a logical inversion gate corresponding to a tap selection signal so as to enable propagation of the signal. At this time, in the other NAND gate, the output signal is fixed to high level and the NAND gate 3 also functions as a logical inversion gate. The objective signal is propagated by the NAND gates 1, 3 and the preceding stage signal is propagated by the NAND gates 2, 3. By constructing the NAND gates 1, 2 with the same structure, the unit delay time (τ) can be matched accurately.

Outputs from a plurality of different ambient condition sensors are cross correlated so as to adjust a threshold value for a different, primary, sensor. Cross-correlation processing can be carried out locally in a detector or remotely. To minimize false alarming, the alarm determination can be skipped if the output from the primary sensor does not exhibit at least a predetermined variation from an average value thereof.

A method for making a tunnel valve head with a flux guide, a tunnel valve sensor having an isolated flux guide, and a magnetic storage system using a tunnel valve sensor having an isolated flux guide is disclosed. The tunnel valve sensors is created by forming a tunnel valve at a first shield layer, the tunnel valve comprising a free layer distal to the first shield layer, depositing a first insulation layer over the first shield layer and around the tunnel valve, depositing a flux guide over the first insulation layer and coupling to the tunnel valve at the free layer, covering the flux guide with a second insulation layer and forming a second shield layer over the second insulation, wherein the flux guide and the free layer are physically isolated by the first and second insulation layers to prevent current shunts therefrom. The structure achieves physical connection between the flux guide and the free layer and insulates the flux guide from the shields. By separating the flux guide and the free layer from the shields, the shunting of current is prevented.

A laser array architecture scalable to very high powers by fiber amplifiers, but in which the output wavelength is selectable, and not restricted by the wavelengths usually inherent in the choice of fiber materials. A pump beam at a first frequency is amplified in the fiber amplifier array and is mixed with a secondary beam at a second frequency to yield a frequency difference signal from each of an array of optical parametric amplifiers. A phase detection and correction system maintains the array of outputs from the amplifiers in phase coherency, resulting in a high power output at the desired wavelength. A degenerate form of the architecture is disclosed in an alternate embodiment, and a third embodiment employs dual wavelength fiber amplifiers to obtain an output at a desired difference frequency.

The invention relates to an MEMS micro-lens driven by three piezoelectric cantilever beams and a manufacturing method thereof and belongs to the technical field of piezoelectric MEMS appliance designs and integrated manufacturing. The MEMS micro-lens comprises a micro-reflecting mirror surface, the piezoelectric cantilever beams and arched bent elastic narrow beams, wherein each of the piezoelectric cantilever beams is formed by fixing a PZT driving membrane with more than 2 mu m thickness on the surface of a silicon cantilever beam; the three piezoelectric cantilever beams are connected with the micro-lens micro-reflecting mirror surface through three arched bent elastic narrow beams respectively; and the piezoelectric cantilever beams are distributed in a way that an included angle of 120 degrees is formed between every two piezoelectric cantilever beams. The manufacturing method comprises the following steps of: firstly, preparing a piezoelectric thick membrane on a substrate and etching piezoelectric cantilever beam patterns on the piezoelectric thick membrane; secondly, preparing a Au / Cr two-layer metal top electrode and a micro micro-reflecting mirror surface pattern on the PZT piezoelectric thick membrane; and finally, etching a Si substrate on the front and back faces so as to form the MEMS micro-lens driven by the three piezoelectric cantilever beams. The MEMS micro-lens has the advantages of many deflecting directions, strong driving force of the PZT thick membrane and low optical loss. The manufacturing process is compatible with the MEMS process, so that the MEMS micro-lens has the potential of mass production and can be widely applied in the field of optical communication.