Low cost cryptographic accelerator
Granted: December 12, 2023
Patent Number:
11841981
A low-cost cryptographic accelerator is disclosed that accelerates inner loops of a cryptographic process. The cryptographic accelerator performs operations on cryptographic data provided by a central processing unit (CPU) running a software cryptographic process to create a combined hardware and software cryptographic process, resulting in a lower cost secure communication solution than software-only or hardware-only cryptographic processes. In an embodiment, a cryptographic accelerator…
Techniques for identifying user interface elements and systems and devices using the same
Granted: November 7, 2023
Patent Number:
11809626
The embodiments of the present disclosure relate generally to techniques for identifying elements in a user interface (UI), and more particularly, techniques for determining UI elements selected on a contact-sensitive user interface and using those techniques to provide one or more haptic responses.
Touch sensor mutual charge cancellation and related systems, methods and apparatuses
Granted: June 13, 2023
Patent Number:
11675462
A process includes receiving an associated input signal via a receiver electrode of a sensor array, the associated input signal indicative of an associated mutual capacitance of the receiver electrode; adding a balancing signal to the associated input signal to generate a balanced input signal at least partially responsive to a number of sensor nodes at the receiver electrode; generating a voltage signal indicative of the associated mutual capacitance of the receiver electrode at least…
Knob on display devices and related systems, methods, and devices
Granted: February 14, 2023
Patent Number:
11579665
Knob on display (KoD) devices and related systems, methods, and devices are disclosed. A KoD device includes a touch surface including a conductive material. The touch surface is configured to be positioned in a released position and in a depressed position. The touch surface is configured to be positioned in the depressed position responsive to pressure applied to the touch surface. The KoD device also includes a push electrode pad configured to be positioned in engagement proximity to…
Excitation voltages for touch sensors
Granted: November 8, 2022
Patent Number:
11494037
A method including applying a first excitation voltage to an electrode of a touch sensor which charges a capacitive node associated with the electrode from a first voltage level to a second voltage level that is greater than the first voltage level. A first measurement measures a charge to change from the first voltage level to the second voltage level. A second excitation voltage is applied to the electrode which charges the capacitive node from the second voltage level to a third…
Touch sensor signal integration
Granted: October 18, 2022
Patent Number:
11474641
In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period and performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period. The method also includes toggling the charging signal, resulting in a second rising edge of the charging signal during the second synchronization period. The…
Techniques for routing signals using inactive sensor regions of touch sensors and related systems and devices
Granted: April 12, 2022
Patent Number:
11301080
A sensor region of a touch sensor may include active and inactive sensor regions. The inactive sensor regions may include one or more routing connectors electrically connected to the active sensor regions, electrically connected to connection forming elements, and/or electrically connected to tracking lines. System and touch displays may include touch sensors with such sensor regions.
System bus transaction queue reallocation
Granted: February 22, 2022
Patent Number:
11256632
A bus architecture is disclosed that provides for transaction queue reallocation on the modules communicating using the bus. A module can implement a transaction request queue by virtue of digital electronic circuitry, e.g., hardware or software or a combination of both. Some bus clogging issues that affect conventional systems can be circumvented by combining an out of order system bus protocol that uses a transaction request replay mechanism. Modules can evict less urgent transactions…
Techniques for wideband touch sensing and related systems, methods and devices
Granted: December 21, 2021
Patent Number:
11204666
A touch sensing method is described as well as related methods and systems. In some embodiments of the touch sensing method, energy of a drive signal is allocated among frequencies of RF subcarriers such that the allocated energy meets electromagnetic emissions requirements for the application of a touch sensing system implementing the touch sensing method. Also described are methods of determining a spectrally shaped time domain digital waveform for use in generating a spectrally shaped…
Techniques for identifying user interface elements and systems and devices using the same
Granted: October 26, 2021
Patent Number:
11157083
The embodiments of the present disclosure relate generally to techniques for identifying elements in a user interface (UI), and more particularly, techniques for determining UI elements selected on a contact-sensitive user interface and using those techniques to provide one or more haptic responses.
Differential sensing for touch sensors
Granted: March 23, 2021
Patent Number:
10955973
In one embodiment, a method includes outputting a first current associated with a first electrode track of a self-capacitance touch sensor. The method also includes outputting a second current associated with a second electrode track of the self-capacitance touch sensor. The method also includes measuring a voltage associated with a difference between the first and second currents and determining a position of an object relative to the self-capacitance touch sensor based on the voltage.
Autonomous process control peripheral
Granted: March 9, 2021
Patent Number:
10942492
An updated process parameter to an autonomous process control peripheral is autonomously obtained when made available by a process monitor peripheral, such as an analog-to-digital converter (ADC). The input can be obtained in response to a system event, such as a completed ADC conversion. The autonomous process control peripheral can compute an updated control variable each time the process variable is updated. When the updated control variable is calculated by the autonomous process…
Segmented capacitive sensor, and related systems, methods and devices
Granted: January 19, 2021
Patent Number:
10895939
Disclosed are segmented sensors and related systems, methods, and devices. In one embodiment, a capacitive sensor includes a first gird of sensor lines, a second grid of sensor lines, and an isolating region defined between the first grid of sensor lines and the second grid of sensor lines. Also disclosed are touch controllers configured for operable coupling to, and detecting touches at, a segmented sensor, and related systems, methods, and devices. In one embodiment, connectors of a…
Touch sensor signal integration
Granted: October 20, 2020
Patent Number:
10809843
In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period and performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period. The method also includes toggling the charging signal, resulting in a second rising edge of the charging signal during the second synchronization period. The…
Low cost cryptographic accelerator
Granted: September 22, 2020
Patent Number:
10783279
A low-cost cryptographic accelerator is disclosed that accelerates inner loops of a cryptographic process. The cryptographic accelerator performs operations on cryptographic data provided by a central processing unit (CPU) running a software cryptographic process to create a combined hardware and software cryptographic process, resulting in a lower cost secure communication solution than software-only or hardware-only cryptographic processes. In an embodiment, a cryptographic accelerator…
System architecture with secure data exchange
Granted: September 15, 2020
Patent Number:
10776294
In an embodiment, a system comprises: a first bus; a second bus; a first peripheral coupled to the first bus and the second bus, the first peripheral configured to receive a command from the first bus and to generate data in response to the first command; and a second peripheral coupled to the first bus and the second bus, the second peripheral configured to initiate transfer of the generated data from the first peripheral to the second peripheral over the second bus such that access to…
Touch sensor hand-configuration analysis
Granted: September 8, 2020
Patent Number:
10768745
In certain embodiments, an apparatus includes controller circuitry and a touch sensor that includes first electrodes. The controller circuitry is configured to measure first capacitance values during a first time period, each first capacitance value associated with a respective first electrode. The controller circuitry is also configured to determine a first hand-usage value based at least on a distribution of the first capacitance values. The controller circuitry is also configured to…
Regulators with load-insensitive compensation
Granted: September 8, 2020
Patent Number:
10768647
Systems, methods, circuits and computer-readable mediums for regulators, e.g., low-dropout (LDO) regulators, with load-insensitive compensations are provided. An example regulator includes an amplifier operable to receive an input voltage and a feedback voltage, a follower responsive to an output voltage of the amplifier and operable to supply a regulated voltage to a load coupled to the follower, and a feedback circuit coupled to the load and the amplifier and operable to provide the…
Peripheral interface circuit for serial memory
Granted: July 28, 2020
Patent Number:
10725950
A peripheral interface circuit and method is disclosed for dealing with round trip delay with serial memory. In some implementations, a finite state machine is configured to introduce a delay state prior to a read data state to absorb round trip delay associated with a memory read operation. A clock module is coupled to the finite state machine and configured to delay start of a pad return clock for the read operation until completion of the delay state. A first synchronous logic is…
Excitation voltages for touch sensors
Granted: July 21, 2020
Patent Number:
10719177
A method including applying a first excitation voltage to an electrode of a touch sensor which charges a capacitive node associated with the electrode from a first voltage level to a second voltage level that is greater than the first voltage level. A first measurement measures a charge to change from the first voltage level to the second voltage level. A second excitation voltage is applied to the electrode which charges the capacitive node from the second voltage level to a third…
