Capacitive control panel
Granted: May 20, 2014
Patent Number:
8730199
A control panel for proximity and force sensing, includes a cover layer, a first electrode layer including a first force sensor electrode, a second force sensor electrode positioned in a second electrode layer or on a support layer, and a dielectric substrate at least a portion of which is compressible and is positioned between the first and second force sensor electrodes. The support layer is positioned to support at the vicinity of the second force sensor electrode support location so…
Enhanced HVPMOS
Granted: May 20, 2014
Patent Number:
8729629
A p-channel LDMOS device with a controlled n-type buried layer (NBL) is disclosed. A Shallow Trench Isolation (STI) oxidation is defined, partially or totally covering the drift region length. The NBL layer, which can be defined with the p-well mask, connects to the n-well diffusion, thus providing an evacuation path for electrons generated by impact ionization. High immunity to the Kirk effect is also achieved, resulting in a significantly improved safe-operating-area (SOA). The…
Hot-plugging debugger architectures
Granted: May 13, 2014
Patent Number:
8726223
Systems and techniques for hot-plugging debugger capabilities are described. A described integrated circuit device includes a processor, a first pad interface, a detector configured to detect a clock signal via the first pad interface, one or more second pad interfaces, two or more components including a debug system that is communicatively coupled with the processor, a multiplexer communicatively coupled with the one or more second pad interfaces and the two or more components, and…
Encrypted memory access
Granted: May 13, 2014
Patent Number:
8726037
Various systems and methods for encrypting data are disclosed. In one aspect, the method includes receiving a memory address and a value to be written in the memory address. The method also includes encrypting the value using the memory address as an initial value for an encryption process. The method also includes storing the encrypted value in the memory address.
Method and apparatus for generation of a system master timebase of a computing device using indirect signalling of timing information
Granted: May 13, 2014
Patent Number:
8724615
In a communication system comprising one master device and one or more slave devices, the slave devices synchronize to a common timebase maintained at the master device, independently of a wireless module timebase, without requiring transmission of accurate and real time master timer information from the master device. In one approach, a slave device sends timing information to the master device, the timing information representing the slave device timebase, and the master device sends…
Touch sensitive screen configurations
Granted: May 13, 2014
Patent Number:
8723834
Examples of arrangements of electrodes on a touch sensitive screen provide one or more advantages, such as reduced cross coupling, for example, when a person is using both thumbs or several fingers at substantially the same time to control the touch screen.
Touch screen poly layer electrode distribution
Granted: May 13, 2014
Patent Number:
8723818
A touch screen position sensor has two sets of electrodes, where at least one of the electrodes is divided into segments that are arranged on opposing faces of a substrate. The electrode segments on one face of a substrate do not overlap with the electrode segments on the opposing face of the substrate.
Charge measurement
Granted: May 13, 2014
Patent Number:
8723586
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…
Transponder and method for operating a transponder
Granted: May 6, 2014
Patent Number:
8718545
A transponder and method for operating a transponder, which has a capacitor (Cbuf) for storing power transmitted via an air interface and an arithmetic logic unit (10) that can be supplied with the stored power, in which a capacitor voltage (VC) of the capacitor (Cbuf) is compared with a first threshold (V1), in which the capacitor voltage (VC) is compared with a second threshold (V2), whereby the first threshold (V1) and the second threshold (V2) are different, in which in a first…
Memory address obfuscation
Granted: May 6, 2014
Patent Number:
8719588
Apparatus, systems, and methods may operate to provide, to a memory device, an obfuscated clear-page address derived from a clear-page address that is not the same as a key-page address and/or providing, to the memory device, an obfuscated key-page address derived from the key-page address when the obfuscated clear-page address is the same as the key-page address. Additional apparatus, systems, and methods are disclosed.
Detecting presence of an object in the vicinity of a touch interface of a device
Granted: May 6, 2014
Patent Number:
8717325
A system includes a controller situated on a circuit board and a touch sensor coupled to the controller. The touch sensor includes a plurality of electrodes configured to capacitively coupled to a surface. The system also includes a drive element that is coupled to the controller. The controller is configured to send a drive signal to the drive element and, after sending the drive signal to the drive element, receive a set of sense signals from the touch sensor. The controller is further…
Integrated touch screen
Granted: April 29, 2014
Patent Number:
8711292
In one embodiment, an apparatus includes a display stack for a touch-sensitive screen. The display stack comprises a plurality of layers in which a top layer comprises a substantially transparent cover layer. The display stack is configured to display a color image. The apparatus also includes a touch sensor provided within the display stack. The touch sensor comprises a plurality of first conductive electrodes contacting a layer of a subset of the plurality of layers of the display…
Cryptographic authentication apparatus, systems and methods
Granted: April 22, 2014
Patent Number:
8707037
Apparatus, systems, and methods send an interrogation command from an interrogation and timing apparatus to a timed identification (TID) apparatus. The TID apparatus receives the interrogation command, performs a series of logical operations to calculate a response, and returns the response within a maximum length of time established by the interrogation and timing apparatus. The interrogation and timing apparatus confirms that the length of time between sending the interrogation command…
Receiver and method for the reception of a node by a receiver in a wireless network
Granted: April 22, 2014
Patent Number:
8705670
In one embodiment, a method includes receiving a radio frequency (RF) signal; synchronizing the received RF signal with a preamble to determine a time base; determining a first energy value of the received RF signal by averaging received signal strength indication (RSSI) values of the received RF signal over a first period of time; determining a second energy value of the received RF signal over a second period of time; determining a difference value between the first energy value and…
Multiple electrode touch sensitive device
Granted: April 22, 2014
Patent Number:
8704779
Two different sets of electrodes in a touch sensitive device are formed to produce an electric field gradient from one end of the electrodes to the other end when opposite ends of the electrodes are driven with different voltages. A signal measuring cycle is performed by alternately driving the ends of one set of electrodes, while using the other set of electrodes to receive signals. The roles of the sets of electrodes are then reversed, such that the set that that was driven is now used…
Method and system for minimizing the accumulated offset error for an analog to digital converter
Granted: April 22, 2014
Patent Number:
8704690
A method and system utilized with an analog to digital converter is disclosed. The method and system comprise providing a first conversion on an input signal. In the first conversion, an offset error is added to the input signal to provide a first result. The method and system further includes providing a second conversion on the input signal. In the second conversion, an offset error is subtracted from the input signal to provide a second result. The first and second results are then…
Reference voltage circuits
Granted: April 22, 2014
Patent Number:
8704589
A reference voltage circuit corrects for bandgap voltage shifts induced during fabrication. The reference voltage circuit generates a reference voltage using first and second base-emitter pairs. The reference voltage circuit sums the voltage across the first base-emitter pair with a difference voltage. During a first time period, the difference voltage is the voltage across the first base-emitter pair minus the voltage across the second base-emitter pair, and during a second time period,…
Method for wireless data transmission between a base station and a passive transponder, as well as a passive transponder
Granted: April 15, 2014
Patent Number:
8699560
A method for wireless data transmission, in, for example, RFID systems, between a base station and a passive transponder, as well as a passive transponder is provided by inductive coupling, as well as a passive transponder. It is possible to transmit data from the base station to the transponder by a first data transmission protocol type and by at least one second data transmission protocol type, whereby the first or the at least second data transmission protocol type is selected by…
Apparatus for integrated backlight and dynamic gamma/VCOM control on silicon chips
Granted: April 15, 2014
Patent Number:
8698728
Integrated backlight unit (BLU) and liquid crystal systems and circuits in liquid crystal display (LCD) systems are described. An LCD system can include a BLU to emit light at different intensities, and a BLU controller coupled to the BLU and configured to control the intensities. An LCD unit can receive the emitted light, and emanate light at a selected luminosity. The LCD unit can include pixels corresponding to: a liquid crystalline medium to provide a transmittance of the light…
Channel tracking in an orthogonal frequency-division multiplexing system
Granted: March 18, 2014
Patent Number:
8675744
A receiver determines phase and frequency information from data signals that carry information from a transmitter to a receiver, instead of or in addition to, information from control signals. In a specific embodiment, the information is obtained from data signals modulated as a binary phase-shift keying (“BPSK”) waveform by demodulation. Other phase-shift keyings might be used instead. Encoded information might be recovered in received OFDM packets by receiving OFDM subcarriers…
