Atmel Patent Grants

Charge measurement

Granted: November 21, 2017
Patent Number: 9823285
An apparatus comprises a comparator that includes a first input, a second input and an output. The comparator is configured for measuring a difference in voltage between a source coupled to the first input and another source coupled to the second input, and providing information associated with the measured difference at the output. The apparatus also comprises a controllable current source coupled to the first input of the comparator and configured for supplying or drawing current. The…

Instrumenting switch mode power supply to measure circuit power consumption

Granted: November 21, 2017
Patent Number: 9823734
A circuit includes a pulse generator coupled to a switch mode power supply. The switch mode power supply includes a switching component configured for transferring a charge to an energy storage component in response to pulses provided by the pulse generator. A pulse counter is coupled to the pulse generator or the switching component and configured to count pulses over a time period and thereby generate a pulse count. A converter coupled to the pulse counter is configured to generate a…

Capacitive touch screen with noise suppression

Granted: November 21, 2017
Patent Number: 9823784
A capacitive touch sensor wherein the touch sensitive panel has drive electrodes arranged on the lower side of a substrate and sense electrodes arranged on the upper side. The drive electrodes are shaped and dimensioned to substantially entirely cover the touch sensitive area with individual drive electrodes being separated from each other by small gaps, the gaps being so small as to be practically invisible. The near blanket coverage by the drive electrodes also serves to screen out…

Memory system with encoding

Granted: November 21, 2017
Patent Number: 9824732
In an embodiment, a memory system comprises a memory array having memory cells. A decoder is coupled to the memory array and configured to decode input address signals to generate memory cell selection signals. An encoder is configured to generate encoded selection signals based on the memory cell selection signals. In another embodiment, a method comprises: receiving by the decoder of the memory system input address signals, generating, by the decoder, selection signals for selecting a…

Low-birefringence substrate for touch sensor

Granted: November 21, 2017
Patent Number: 9825104
In one embodiment, an apparatus includes a substrate including material having a low birefringence. One or more electrodes of a touch sensor are disposed on the substrate.

Interleaved scanning for capacitive touch sensors

Granted: November 14, 2017
Patent Number: 9817531
A touch sensing circuit includes: a plurality of sensor channels; a controller coupled to the plurality of sensor channels, the controller configured to: map the sensor channels to sensor nodes, the sensor nodes forming a plurality of interleaved lumped sensors, where at least two of the interleaved lumped sensors include a common sensor node; scan, during a scan period, the interleaved lumped sensors to detect one or more touch inputs; and responsive to detecting one or more touch…

Generating clock on demand

Granted: November 7, 2017
Patent Number: 9811111
A clock generation system for an integrated circuit (IC) chip (e.g., a microcontroller) is disclosed that allows digital blocks and other components in the IC chip to start and stop internal clocks dynamically on demand to reduce power consumption.

Apparatus and technique for modular electronic display control

Granted: November 7, 2017
Patent Number: 9814109
The present invention discloses apparatus and techniques for modular backlighting control of a display. The display includes a number of strings of LEDs. The display is divided into several sections, and each section includes one or more strings of LEDs. A local controller is assigned to each section. The local controller receives feedback signals from the strings of LEDs in its sections and controls the drive voltages and drive currents of those strings. The local controllers…

Fast scanning for mutual capacitance screens

Granted: October 31, 2017
Patent Number: 9804722
In one embodiment, an apparatus for detecting a touch. The apparatus includes a touch sensor that includes a first plurality of electrode lines and a second plurality of electrode lines. The apparatus also includes a touch sensor controller coupled to the touch sensor. The touch sensor controller is operable to apply a respective voltage pulse simultaneously to each of the first plurality of electrode lines, measure a respective signal at each of the second plurality of electrode lines,…

Integrated circuit for remote keyless entry system

Granted: October 31, 2017
Patent Number: 9806405
An integrated circuit for use in remote keyless entry (RKE) applications is disclosed that integrates two drivers with a shared dual mode antenna. The drivers may be integrated on a single integrated circuit chip using high voltage (HV) complementary metal-oxide-semiconductor (CMOS) processes. In immobilizer mode of operation, an immobilizer driver coupled to the dual mode antenna is configured to drive the dual mode antenna, while an LF mode driver coupled to the dual mode antenna is…

Low-power and low-frequency data transmission for stylus and associated signal processing

Granted: October 24, 2017
Patent Number: 9798396
In one embodiment, a controller includes one or more computer-readable non-transitory storage media embodying logic that is operable when executed to: initiate an acquisition of a first signal from an electrode of a touch sensor according to an acquisition frequency of the touch sensor, store a first modulated signal which includes a modulated form of the first signal, initiate an acquisition of a second signal from the electrode of the touch sensor according to the acquisition frequency…

Touch sensor with edge-balanced macro-feature design

Granted: October 17, 2017
Patent Number: 9791980
In one embodiment, a touch position-sensing panel comprising a sensing area comprising a substrate, a plurality of first electrodes in a first layer, the plurality of first electrodes comprising conductive mesh and arranged in a first direction, the first layer having a first plurality of gaps formed therein, a plurality of second electrodes in a second layer, the plurality of second electrodes comprising conductive mesh and arranged in a second direction generally perpendicular to the…

Oncell single-layer touch sensor

Granted: October 17, 2017
Patent Number: 9791992
In one embodiment, a device includes a display stack including a number of layers. The layers include a cover layer and one or more other layers. The device also includes a touch sensor disposed on a surface of a particular layer of the plurality of layers of the display stack. The touch sensor includes a number of first electrodes oriented along a first direction. Each of the first electrodes includes a plurality of first conductive regions. The touch sensor also includes a number of…

Variable-pitch tracking for touch sensors

Granted: October 10, 2017
Patent Number: 9785292
In one embodiment, a touch sensor includes a first set of tracks configured to electrically couple a first set of connection pads of the touch sensor to a first set of electrodes of the touch sensor. At least a portion of the first set of tracks extends in a direction, and at least one of the tracks in the first set of tracks has two or more different pitches at two or more different points along the extent of the first set of tracks. The touch sensor also includes a second set of tracks…

Frequency control data synchronization

Granted: October 3, 2017
Patent Number: 9780944
In an embodiment, a circuit includes a synchronizer configured to generate a trigger signal synchronized to a reference clock. A synthesizer is configured to synthesize a signal according to frequency control data in response to the trigger signal. A radio receiver is configured to process a carrier signal according to the synthesized signal. A phase measurement unit is configured to measure a first channel frequency response based on the processed carrier signal.

Multi-protocol serial communication interface

Granted: September 26, 2017
Patent Number: 9772970
Systems and methods for multi-protocol serial communication interfaces are described. One example system includes an interface module including a buffer for storing a protocol selection. The system includes a protocol module coupled to the interface module and configured for providing one or more serial communication protocols. Based on the protocol selection, one of the serial communication protocols is selected. The system also includes a serial engine module coupled to the interface…

Single-layer touch sensor

Granted: September 12, 2017
Patent Number: 9760207
In one embodiment, a touch sensor includes a first electrode and a second electrode. At least a portion of the second electrode is interdigitated with the first electrode. The first electrode includes a base portion, a digit and an extent. The digit includes a first end and a second end, connects to the base portion at the first end, and extends from the base portion in a first direction along a first axis. The extent connects to the digit at the second end and extends from the digit…

Touch sensor

Granted: August 22, 2017
Patent Number: 9740330
In one aspect, a touch sensor includes a dielectric surface layer; drive electrodes disposed on the dielectric surface layer and arranged radially about a center, the drive electrodes defining a perimeter about the center, and a sense electrode disposed on the dielectric surface layer and arranged between two of the drive electrodes. Each drive electrode can include: an outer radial section extending radially along the perimeter; a central section extending from the outer radial section…

Timing synchronization of active stylus and touch sensor

Granted: August 15, 2017
Patent Number: 9733731
In one embodiment, a stylus includes a controller, a delay line, a coefficient line and a computer-readable non-transitory storage medium. The controller is operable to receive a synchronization signal that is transmitted from a computing device and received by the stylus. The delay line is operable to store a first consecutive edges of the synchronization signal. The coefficient line includes a pre-determined coefficient vector. The computer-readable non-transitory storage medium…

Data transfer

Granted: August 15, 2017
Patent Number: 9734102
A controller coupled to a peripheral identifies an access type used by the controller for data transfer. The controller performs operations including: sending information to a peripheral coupled to a controller, the information indicating an access type for which the controller is configured for data transfer; monitoring a communication link with the peripheral for a signal indicating that the peripheral is ready to perform a data transfer according to the access type; and performing, in…