TEMPERATURE SENSOR WITH DIGITAL BANDGAP
Granted: September 13, 2012
Application Number:
20120230367
A system comprises a temperature sensor generate multiple base-emitter voltage signals by sequentially providing various currents to a transistor, and a system controller to determine a differential voltage signal according to the multiple base-emitter voltage signals, the differential voltage signal proportional to an environmental temperature associated with the transistor.
Two Prong Capacitive Sensor Pattern
Granted: September 13, 2012
Application Number:
20120229417
One embodiment of a capacitive sensor array may comprise a first plurality of sensor elements and a second sensor element capacitively coupled with each of the first plurality of sensor elements. The second sensor element may further comprise a first main trace and a second main trace, where the first main trace and the second main trace intersect each of the first plurality of sensor elements, and where each of the main traces cross at least one of a plurality of unit cells associated…
Capacitive Sensing Button On Chip
Granted: August 30, 2012
Application Number:
20120217982
An embodiment of an integrated circuit device may comprise an integrated circuit package, a sensor element attached within the integrated circuit package, a capacitance sensor coupled with the sensor element and situated within the integrated circuit package, wherein the capacitance sensor is configured to measure a capacitance of the sensor element, and an output pin positioned at the exterior of the integrated circuit package, wherein the output pin is configured to carry a signal…
METHOD AND APPARATUS TO IMPLEMENT A RESET FUNCTION IN A NON-VOLATILE STATIC RANDOM ACCESS MEMORY
Granted: August 23, 2012
Application Number:
20120213027
A system and method for resetting semiconductor memory is disclosed. The present invention uses an array reset circuit to independently drive the bit lines of a volatile memory cell high or low so as to reset either a single memory cell or all memory cells in an array with all 0's or all 1's.
MUTLI-STRING LED CURRENT CONTROL SYSTEM AND METHOD
Granted: August 9, 2012
Application Number:
20120200229
Embodiments described herein provide a LED lighting system and method. A transformer has a primary winding and a secondary winding. A plurality of LED strings are coupled to the secondary winding of the transformer. At least one switch is coupled to at least one of the plurality of LED strings. A controller is coupled to the at least one switch and configured to control the operation of the at least one switch such that current flows through the plurality of LED strings in an alternating…
COMPENSATION CIRCUIT FOR A TX-RX CAPACITIVE SENSOR
Granted: August 9, 2012
Application Number:
20120200307
A capacitive sensor may include a transmit electrode and a receive electrode capacitively coupled with the transmit electrode. A capacitance sensing circuit senses a capacitance between the transmit and receive electrodes by applying a signal to the transmit electrode and rectifying a signal induced at the receive electrode. A compensation circuit reduces the effect of a mutual and parasitic capacitances of the transmit and receive electrode pair by adding a compensation signal to the…
NOISE FILTERING DEVICES, SYSTEMS AND METHODS FOR CAPACITANCE SENSING DEVICES
Granted: August 9, 2012
Application Number:
20120200524
A capacitance sensing system can filter noise that presents in a subset of electrodes in the proximity of a sense object (i.e., finger). A capacitance sensing system can include a sense network comprising a plurality of electrodes for generating sense values; a noise listening circuit configured to detect noise on a plurality of the electrodes; and a filtering circuit that enables a filtering for localized noise events when detected noise values are above one level, and disables the…
CELLULAR COMMUNICATION DEVICE WITH WIRELESS POINTING DEVICE FUNCTION
Granted: July 26, 2012
Application Number:
20120188163
A method and apparatus receive first input through a touch screen and communicate over a cellular network responsive to the first input. The method and apparatus receive second input through the touch screen and use the second input to control, through a wireless network other than the cellular network, an image displayed on a screen of a second device.
MEMORY ARCHITECTURE HAVING TWO INDEPENDENTLY CONTROLLED VOLTAGE PUMPS
Granted: July 26, 2012
Application Number:
20120188826
In embodiments described herein, a memory architecture has an array of non-volatile memory cells and a pair of independently controlled voltage pumps. The pair of voltage pumps is coupled for supplying both positive and negative voltage biases to the memory array during program and erase operations, such that a sum of the magnitudes of the positive and negative voltage biases is applied across a storage node of an accessed memory cell.
Apparatus and Method for Programmable Power Management in a Programmable Analog Circuit Block
Granted: July 19, 2012
Application Number:
20120182073
An apparatus and method for programmable power management in a programmable analog circuit block. Specifically, the present invention describes an operational amplifier circuit that includes current sources that are coupled in parallel. Configuration bits are asserted to selectively enable or selectively disable one or more of the current sources in order to modulate the performance of the operational amplifier circuit block. Selective addition or removal of current sources increases or…
STATE-MONITORING MEMORY ELEMENT
Granted: July 12, 2012
Application Number:
20120176854
Embodiments of the invention relate to a state-monitoring memory element. The state-monitoring memory element may be implemented by degrading an input voltage supply to the state-monitoring memory element across a diode and/or a transistor. One or more current sources may be used to stress the state-monitoring memory element. A logic analyzer may be used to analyze the integrity of the state-monitoring memory element and trigger appropriate actions in the IC, e.g., reset, halt, remove…
SPECIALIZED UNIVERSAL SERIAL BUS CONTROLLER
Granted: June 28, 2012
Application Number:
20120166700
An apparatus comprises a memory device to store a pre-generated Universal Serial Bus (USB) command before a USB peripheral device is coupled to a USB. The apparatus also includes a processing device to retrieve the pre-generated USB command from the memory device and transmit the pre-generated USB command to the USB peripheral device over the USB. A method comprises identifying a Universal Serial Bus (USB) peripheral device is coupled to a USB. The USB peripheral device is coupled to the…
Predictive Touch Surface Scanning
Granted: June 21, 2012
Application Number:
20120154324
A method for locating a conductive object at a touch-sensing surface may include detecting a first resolved location for the conductive object at the touch-sensing surface based on a first scan of the touch-sensing surface, predicting a location for the conductive object, and determining a second resolved location for the conductive object by performing a second scan of a subset of sensor elements of the touch-sensing surface, wherein the subset of sensor elements is selected based on…
SUPPLY REGULATED CHARGE PUMP SYSTEM
Granted: June 7, 2012
Application Number:
20120139620
An apparatus and a method for maintaining an output voltage of a charge pump circuit near a target voltage is disclosed. A regulated supply voltage is generated based on the output voltage of the charge pump. The regulated supply voltage is applied to a voltage input to the charge pump circuit and to a voltage input of a clock driver that provides a regulated clock signal to the charge pump circuit.
Asymmetric Sensor Pattern
Granted: May 31, 2012
Application Number:
20120133611
An embodiment of a capacitive sensor array may comprise a first plurality of sensor elements and a second sensor element comprising a main trace that intersects each of the first plurality of sensor elements to form a plurality of intersections. A unit cell may be associated with each of the intersections, and each unit cell may designate a set of locations nearest to a corresponding intersection. A contiguous section of the main trace may cross at least one of the plurality of unit…
5T HIGH DENSITY NVDRAM CELL
Granted: May 10, 2012
Application Number:
20120113718
A memory circuit includes a high voltage region providing storage of a nonvolatile bit, and a low voltage region providing at least partial storage of a volatile bit. The high and low voltage regions are isolated from one another and formed by a plurality of transistors in series between a current source and a bit line.
CAPACITIVE STYLUS WITH PALM REJECTION
Granted: May 3, 2012
Application Number:
20120105361
A system comprising a sensing device and a capacitive sense array configured to detect a presence of a passive touch object and a stylus where the capacitive sense array receives a transmit signal from the stylus via capacitive coupling. The system further comprising a processing device configured to determine the stylus location on the capacitive sense array based on the transmit signal and to synchronize the stylus to the capacitive sense array. A system further comprises a…
SYNCHRONIZING A STYLUS WITH A CAPACITIVE SENSE ARRAY
Granted: May 3, 2012
Application Number:
20120105362
A system and method for tracking a stylus on a capacitive sense array. The system comprising the capacitive sense array configured to detect a presence of the stylus, a processing device to generate a synchronization signal, and a transmitter to transmit the synchronization signal to the stylus to synchronize the stylus to the capacitive sense array. The system further comprises a magnetic antenna configured to inductively transmit the synchronization signal to the stylus, wherein the…
Flexible Capacitive Sensor Array
Granted: April 26, 2012
Application Number:
20120098783
A method for detecting force applied to a capacitive sensor array and compensating for coordinate inaccuracy due to force includes receiving a plurality of capacitance measurements from the capacitive sensor array, where the plurality of capacitance measurements includes a first capacitance measurement and a second capacitance measurement, and detecting pressure on the capacitive sensor array based on a comparison between the first capacitance measurement and the second capacitance…
MEMORY INTERFACE CONFIGURABLE FOR ASYNCHRONOUS AND SYNCHRONOUS OPERATION AND FOR ACCESSING STORAGE FROM ANY CLOCK
Granted: April 19, 2012
Application Number:
20120096301
An improved memory interface circuit is provided for accessing a storage array in one of two available modes, including a synchronous mode and an asynchronous mode. The improved memory interface circuit also includes logic, which enables the storage array to reside within substantially any clock domain.
