GESTURE SENSING DEVICE
Granted: February 6, 2014
Application Number:
20140035812
A gesture sensing device having a single illumination source is disclosed. In one or more implementations, the gesture sensing device includes a single illumination source configured to emit light and a light sensor assembly configured to detect the light reflected from an object and to output time dependent signals in response thereto. The gesture sensing device also includes a processing circuit coupled to the light sensor assembly and configured to analyze the time dependent signals…
NON-LINEAR PWM CONTROLLER
Granted: February 6, 2014
Application Number:
20140035542
A switching power supply includes a circuit having at least two reactive components to provide an output voltage and capable of being switched from a first output state to a second output state. A switching component switches the circuit between at least two switching states including the first output state and the second output state. A pulse width modulator receives a duty cycle and drives the switching component to cause switching between two of the at least two switching states. A…
LIGHT SENSOR HAVING IR CUT INTERFERENCE FILTER WITH COLOR FILTER INTEGRATED ON-CHIP
Granted: February 6, 2014
Application Number:
20140035012
Techniques are described to furnish a light sensor that includes a patterned IR interference filter integrated with a patterned color pass filter. In one or more implementations, the light sensor includes a substrate having a surface. An IR interference filter configured to block infrared light is disposed over the surface of the substrate. The light sensor also includes one or more color pass filters placed above or below the IR interference filter. The color pass filters are configured…
LIGHT SENSOR HAVING IR CUT AND COLOR PASS INTERFERENCE FILTER INTEGRATED ON-CHIP
Granted: January 30, 2014
Application Number:
20140027876
A light sensor is described that includes an IR interference filter and at least one color interference filter integrated on-chip. The light sensor comprises a semiconductor device (e.g., a die) that includes a substrate. Photodetectors are disposed proximate to the surface of the substrate. An IR interference filter is disposed over the photodetectors. The IR interference filter is configured to filter infrared light from light received by the light sensor to at least substantially…
Active Transducer Probes and Circuits
Granted: January 16, 2014
Application Number:
20140015605
In an example embodiment, a method for bidirectional signal propagation comprises: a) sensing a voltage level of a first signal at a first port; b) coupling the first port to an output of an amplifier with a solid state switch if the voltage level of the first signal is less than a threshold voltage, whereby a second signal applied to a second port coupled to an input of the amplifier is propagated in a first direction from the second port to the first port; and c) bypassing the…
Secure Payments with Untrusted Devices
Granted: January 2, 2014
Application Number:
20140006190
Various embodiments of the present invention relate to a point-of-sale (POS) system, and more particularly, to systems, devices and methods of making secure payments using a mobile device in addition to a POS terminal that may be an insecure payment device exposed to various tamper attempts under certain circumstances. The mobile device is involved in a trusted transaction between a central financial entity, e.g., a bank, and the payment terminal, such that the insecure payment terminal…
Safety device and method for using a safety device
Granted: December 26, 2013
Application Number:
20130341393
The invention relates to a security device with sensors for checking whether the security device (1) is in an undamaged state and checking for the presence of a specified support (9) of the security device (1), said support (9) being an object, in particular a mechanical or electronic component, characterized in that the sensors detect movements and/or accelerations of the security device (1) relative to the support (9) and/or material properties of the support (9) and/or of the security…
GESTURE DETECTION AND RECOGNITION
Granted: December 19, 2013
Application Number:
20130335225
Techniques are described for tracking and recognizing gestures performed within a field-of-view of a sensor. In one or more implementations, the techniques may be implemented within an electronic device that is configured to receive a signal from a sensor in response to the sensor detecting a gesture occurring within a field of view of the sensor. A lens is positioned over the sensor to collimate light incident on the lens and to pass the collimated light to the sensor. The electronic…
DAISY CHAIN CONFIGURATION FOR POWER CONVERTERS
Granted: November 7, 2013
Application Number:
20130293013
A system includes a plurality of power supplies and a controller. The plurality of power supplies outputs power to a load. A serial bus connects the plurality of power supplies in a daisy chain. The controller is connected to first and last ones of the power supplies by the serial bus. The controller is connected to a management bus via a management bus interface. The controller monitors the plurality of power supplies via the serial bus. The controller transmits status information of…
MICROMECHANICAL CORIOLIS RATE OF ROTATION SENSOR
Granted: October 17, 2013
Application Number:
20130269469
A micromechanical Coriolis rate of rotation sensor for detecting a rate of rotation, comprising a substrate, a measurement axis (X-axis), a detection axis (Y-axis), and a drive axis (Z-axis), each disposed orthogonally to each other and a first and a second driving mass (2) disposed in an X-Y plane parallel to the substrate. Each driving mass (2) being rotatably connected to the substrate by means of a central suspension. The two central suspensions being disposed along the Y-axis. Drive…
SYSTEMS AND METHODS FOR MANAGING CRYPTOGRAPHIC KEYS IN A SECURE MICROCONTROLLER
Granted: September 12, 2013
Application Number:
20130238907
The present invention relates to key management in a secure microcontroller, and more particularly, to systems, devices and methods of automatically and transparently employing logic or physical address based keys that may also be transferred using dedicated buses. A cryptographic engine translates a logic address to at least one physical address, and processes a corresponding data word based on at least one target key. The target key is selected from a plurality of keys based on the…
Electronic Circuit Arrangement for Receiving Low Frequency Electro-Magnetic Waves with an Adjustable Attenuator Element
Granted: August 29, 2013
Application Number:
20130225108
An electronic circuit arrangement for receiving low-frequency electromagnetic waves is proposed, having an inductor (L) acting as an antenna for generating a received signal, having a first receiver (2), connected to the inductor (L), for decoding a first component of the received signal and having a second receiver (3), connected to the inductor (L), for decoding a second component of the received signal, wherein at least the second receiver (3) is connected to the inductor (L) via an…
METHOD AND APPARATUS FOR ACTIVE RIPPLE CANCELATION
Granted: August 29, 2013
Application Number:
20130221869
Various embodiments of the invention allow for active AC ripple noise cancellation. In certain embodiments, noise cancellation is accomplished by modulating an LED driver output in a polarity opposite to the ripple, thereby, preventing interference with ripple-sensitive loads. Certain embodiments take advantage of a filter network to prevent the LED driver from modulating LED current in response to ripple that falls within a visible frequency range so as to prevent flicker in an LED…
Low Distortion MOS Attenuator
Granted: August 22, 2013
Application Number:
20130214841
An attenuation circuit uses a voltage controlled variable resistance transistor as a signal attenuator for receivers operating in the zero Hz to about 30 MHz range. The transistor functions in the linear region to linearize the transistor resistance characteristics used for signal attenuation. In an exemplary application, the attenuation circuit is used as an RF attenuator for AM radio broadcast receivers and amplifiers with automatic gain control. Multiple attenuation circuits can be…
CAPACITIVE TOUCH PANEL FOR MITIGATING AND/OR EXAGGERATING FLOATING CONDITION EFFECTS
Granted: August 15, 2013
Application Number:
20130207924
A capacitive touch panel includes elongated drive electrodes arranged next to one another and elongated sensor electrodes arranged next to one another across the drive electrodes. Together, the drive electrodes and the sensor electrodes define a coordinate system where each coordinate location comprises a capacitor formed at an intersection between one of the drive electrodes and one of the sensor electrodes. In implementations, the drive electrodes and/or the sensor electrodes are…
CAPACITIVE TOUCH PANEL HAVING PROTRUSIONS FORMED BETWEEN DRIVE AND/OR SENSOR ELECTRODES
Granted: August 15, 2013
Application Number:
20130207923
A capacitive touch panel includes elongated drive electrodes arranged next to one another and having a characteristic spacing between adjacent drive electrodes. The capacitive touch panel also includes elongated sensor electrodes arranged next to one another across the drive electrodes and having a characteristic spacing between adjacent sensor electrodes. The drive electrodes and/or the sensor electrodes have protrusions into the spaces between adjacent electrodes. The characteristic…
USB Dedicated Charger Identification Circuit
Granted: August 15, 2013
Application Number:
20130207595
In an embodiment, set forth by way of example and not limitation, a USB dedicated charger identification circuit includes a USB D+ port, a USB D? port, a first circuit conforming to a first identification protocol, a second circuit conforming to a second identification protocol, and logic selectively coupling one of the first circuit and the second circuit to the USB D+ port and the USB D? port. In an alternate embodiment set forth by way of example and not limitation, a method to…
TOUCH PANEL EXCITATION USING A DRIVE SIGNAL HAVING TIME-VARYING CHARACTERISTICS
Granted: August 1, 2013
Application Number:
20130194225
A capacitive touch panel may include a driver and a drive electrode configured to be connected to the driver. The driver is configured to power the drive electrode with a drive signal having a first signal characteristic during a first time interval, and a second signal characteristic different from the first signal characteristic during a second time interval subsequent to the first time interval. The first signal characteristic may comprise one or more of a first frequency, a first…
VIDEO ENCODING CONTROL USING NON-EXCLUSIVE CONTENT CATEGORIES
Granted: July 25, 2013
Application Number:
20130188689
In some embodiments, macroblock-level encoding parameters are assigned to weighted linear combinations of corresponding content-category-level encoding parameters. For example, a macroblock quantization parameter (QP) modulation is set to a weighted linear combination of content category QP modulations. Content categories may identify potentially overlapping content types such as sky, water, grass, skin, and red content. The combination weights may be similarity measures describing…
AMBIENT LIGHT BASED GESTURE DETECTION
Granted: July 18, 2013
Application Number:
20130182246
A gesture sensing device includes one or more sensors and a processor for processing sensed voltages output from the sensors based on ambient light and/or reflected light received by the sensors. The processor determines an ambient light level and/or a distance between the target and the sensors such that, if the ambient light level exceeds an ambient light threshold and/or the distance is less than a distance threshold, the processor determines the motion of a target relative to the…
