摘要:
Methods and devices employing circuitry for quickly discharging pixels of a display before the display is turned off are provided. In one example, a method may include receiving at the electronic display a signal indicating the electronic display will be powered off within a period of time. The method may also include, in response to the signal, causing a frame of pixel data originating from the electronic display to be stored in pixels of the electronic display before the electronic display is powered off. Storing the frame of pixel data in the pixels may inhibit image artifacts from occurring on the electronic display when the electronic display is powered back on in the future.
摘要:
Methods and devices employing circuitry for quickly discharging pixels of a display before the display is turned off are provided. In one example, a method may include receiving at the electronic display a signal indicating the electronic display will be powered off within a period of time. The method may also include, in response to the signal, causing a frame of pixel data originating from the electronic display to be stored in pixels of the electronic display before the electronic display is powered off. Storing the frame of pixel data in the pixels may inhibit image artifacts from occurring on the electronic display when the electronic display is powered back on in the future.
摘要:
Disclosed embodiments relate to a display deformation detection system that detects display deformations based upon changes in resistance and/or capacitance. In one embodiment, a method includes measuring a baseline comprising a baseline resistance or a baseline capacitance or both of a conductive mesh disposed within or overlaid on the display panel. The method further includes detecting a change in the baseline resistance or the baseline capacitance or both and calculating a change location where the change in the baseline resistance or the baseline capacitance or both occurred. The method also includes calculating a magnitude of the change in the baseline resistance or the baseline capacitance or both.
摘要:
Systems and methods for monitoring internal resistance of a display. The method may include supplying the display via a capacitor with a first voltage configured to enable the display to receive one or more touch inputs. After supplying the display with the first voltage, the method may include discharging the capacitor to a second voltage configured to enable the display to display image data. The method may then monitor a discharge waveform that corresponds to when the capacitor discharges from the first voltage to the second voltage. Based at least in part on the discharge waveform, the method may determine a chip on glass resistance value and a flex on glass resistance value that correspond to an internal resistance of the display.
摘要:
Systems and methods for monitoring internal resistance of a display. The method may include supplying the display via a capacitor with a first voltage configured to enable the display to receive one or more touch inputs. After supplying the display with the first voltage, the method may include discharging the capacitor to a second voltage configured to enable the display to display image data. The method may then monitor a discharge waveform that corresponds to when the capacitor discharges from the first voltage to the second voltage. Based at least in part on the discharge waveform, the method may determine a chip on glass resistance value and a flex on glass resistance value that correspond to an internal resistance of the display.
摘要:
Methods and devices useful in compensating for VDD and VTH variations in a micro light-emitting diode (micro-LED) display are provided. By way of example, an LED driver includes a first transistor having a first source coupled to an upper voltage rail (VDD), a first gate, and a first drain. The LED driver includes a second transistor having a second source coupled to the first drain of the first transistor, a second gate, and a second drain coupled to the LED. The second transistor is configured to receive the drive current signal from the first transistor and supply the drive current signal to the LED. The LED driver includes compensation circuitry configured to adjust the drive current signal such that the drive current signal is independent of the upper voltage rail (VDD) and a threshold voltage (VTH) of the first transistor or the second transistor.
摘要:
A display is disclosed that includes a transparent substrate and a plurality of pixel transistors that are formed on the transparent substrate to generate an image for display. A transistor drive circuit is used to drive the pixel transistors to generate the image. The transistor drive circuit may include a gate driver. Further, a test circuit may be used to: adjust voltages that are applied by the gate driver to a pixel transistor; and determine the voltage of the gate driver when a current spike has occurred to the pixel transistor which causes the pixel transistor to turn on. Once this threshold voltage for the gate driver to turn on the pixel transistor has been determined, it may be stored in a storage device for future use by the gate driver. Other embodiments are also described and claimed.
摘要:
Apparatus and methods enable robust, reliable control for implantable medical devices, including cardiac pacemakers, defibrillators and cardiac resynchronization devices. Integrated circuits in the devices have minimized interfaces, can derive power from the interface signals, and have high voltage and latch-up protection. A device lead has a power generation circuit and a switching circuit using cascaded PMOS transistors for operating with a stable voltage despite fluctuations in the supplied voltage. The lead has control electronics that provide a very low impedance between an electrode and a lead conductor during most of the duration of a pacing pulse, but during a brief initial portion of the pacing pulse, provide a very high impedance to permit charging up a power supply that is local to the control electronics. A method of stabilizing the external impedance and a system for fault detection and fault recovery for an implantable device are also provided.
摘要:
Various aspects of the present invention enable robust, reliable control functionality for effectors present on intraluminal, e.g., vascular leads, as well as other types of implantable devices. Aspects of the invention include implantable integrated circuits that have self-referencing and self-clocking signal encoding, and are capable of bidirectional communication. Also provided by the invention are effector assemblies that include the integrated circuits, as well as implantable medical devices, e.g., pulse generators that include the same, as well as systems and kits thereof and methods of using the same, e.g., in pacing applications, including cardiac resynchronization therapy (CRT) applications.
摘要:
Reducing or eliminating the effects of noise that can be generated by a power system of a touch screen device, such as a gate line voltage system that applies voltage to gate lines of the touch screen, is provided. In one example, a power supply, such as a charge pump, can be disabled during active touch sensing, such that noise from the charge pump is not generated during touch sensing. In some examples, a voltage regulator can help to maintain the gate voltage level at or above a desired threshold. In some cases, noise entering the touch sensing system can have a lasting effect on noise-sensitive components, even after the noise source is disabled. In these cases, a post-noise stabilizing system can be included to stabilize, reset, etc., noise-sensitive components of the touch sensing system, which can help to reduce or eliminate the lasting effect of noise.