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| Application No. | Application Title | Issue Date |
| 20120068673 | Startup circuit for self-supplied voltage regulator A startup circuit for starting up a self-supplied voltage regulator which initiates startup by applying a voltage from a voltage supply to the startup circuit thus causing a voltage at an output node to rise. This rise will start the operation of the differential amplif... | 03/22/2012 |
| 20120047382 | Script engine for control of power management controllers A power management IC (PMIC) and methods thereof have been achieved wherein the PMIC invented supports multiple applications while having a high degree of flexibility and allowing a small built and a low power consumption. An embedded script engine on an internal commun... | 02/23/2012 |
| 20110279155 | Slew rate PWM controlled charge pump for limited in-rush current switch driving Circuits and methods to limit an in-rush current of a load circuit such as a processor are disclosed. A charge pump is used as driver for switches with pulse modulation width (PWM) control on the duty cycle of a clock. A clock generator generates a ramp signal with vari... | 11/17/2011 |
| 20110279128 | Driver chip based OLED module connectivity test An anode driver chip and a cathode driver chip attached to an OLED device by means of anisotropic glue. The fine structure of the attachment means requires inspection to determine any resulting open and short conditions. The anode driver circuits comprise an output curr... | 11/17/2011 |
| 20110267731 | Over-current protection for a switch mode class D audio amplifier Circuits and methods for over-current protection of pulse-width modulation systems such as switch mode class D audio systems, DC-to-DC converters, or switch mode power supplies have been disclosed. Over-current protection has been achieved by introducing supply-scalable... | 11/03/2011 |
| 20110316053 | MOS transistor structure with easy access to all nodes A transistor device structured such that the bulk, gate, drain, and source are all accessible from all four edges of the device and such that current distribution is uniform over the device is provided. The transistor is created with a four-metal CMOS process. A bulk co... | 12/29/2011 |
| 20110248984 | User programmable graphics in non-volatile memory for EPD driver IC Systems and methods are disclosed for a display driver having an internal non-volatile memory in order to save memory storage and computation effort of a host processor. In a preferred embodiment of the invention the display driver is applied for an electronic paper dis... | 10/13/2011 |
| 20110248781 | Duplicate feedback network in class D amplifiers A circuit and a method are provided for suppressing the pop and click noise during the power on and power off of Class D amplifiers. The technique also suppresses pops and clicks when the Class D amplifier enters or exits standby mode. A duplicate feedback network is us... | 10/13/2011 |
| 20110227815 | PWM precharge of organic light emitting diodes Methods for PWM precharging of organic light emitting diodes (OLEDs) have been disclosed. Image quality has been improved by including the light generated during pre-charge phase is included in the overall budget. The approach invented is especially beneficial to displa... | 09/22/2011 |
| 20110204861 | DC-DC converter efficiency improvement and area reduction using a novel switching technique Systems and methods to achieve a switched DC-to-DC converter having an improved efficiency have been disclosed. A control logic allows continuous switching to bring the DC-to-DC converter to a final output value during a startup phase, it allows skipping of clock switch... | 08/25/2011 |
| 20110193538 | Domino voltage regulator (dvr) A low dropout voltage regulator comprising a first output voltage regulation loop with a NMOS transistor as a pass element and a second output voltage regulation loop with a PMOS transistor as a pass element. The NMOS transistor is used for small current loads up to 1 m... | 08/11/2011 |
| 20110121801 | Automatic current limit adjustment for linear and switching regulators Circuits and methods for dynamic adjustment of the current limit of a power management unit to avoid unwanted automatic interruption of the power flow have been disclosed. The power management unit is automatically adjusted to the output resistance of a power source (in... | 05/26/2011 |
| 20110121800 | Method for providing and operating an LDO The LDO has at least three stages supplied by a supply voltage. A first stage has a differential amplifier and a folded cascode device with a regulated current mirror. The LDO has two nodes that are configured to couple the differential amplifier and the regulated curre... | 05/26/2011 |
| 20110114842 | Infrared photocurrent front-end ADC for rain-sensing system with ambient light compensation Systems and methods for a front-end circuit receiving a current from a photodiode receiving a signal light and ambient light have been disclosed. In a preferred embodiment the front-end circuit accommodates a photo diode current, generated by a signal light from an infr... | 05/19/2011 |
| 20110087347 | Digital controller for automatic rate detection and tracking of audio interface clocks Systems and methods to achieve a digital audio interface having automatic rate detection and tracking of digital audio streams have been achieved. The system comprises a digital controller working in conjunction with an analog phase-locked loop (PLL). It removes the nee... | 04/14/2011 |
| 20110084768 | Dual reference oscillator phase-lock loop A phase-locked loop has a stable high frequency reference oscillator to provide a stable high frequency reference signal that has reference frequency that is a small submultiple of a generated frequency of a voltage controlled oscillator within the phase-locked loop. An... | 04/14/2011 |
| 20110084757 | VDD/5 or VDD/6 charge-pump Systems and methods to achieve a charge pump for generating from single supply voltage energy efficient supply voltages having a value of ±1/6 Vdd, ±1/5 Vdd, ±1/4 Vdd, ±1/3 Vdd, ±1/2 Vdd or ±1 Vdd that are symmetrical around ground voltage have been disclosed. The... | 04/14/2011 |
| 20110084756 | Reduced capacitor charge-pump Systems and methods to achieve a charge pump for generating from single supply voltage energy efficient supply voltages that are symmetrical around ground voltage have been disclosed. The charge pump requires two flying capacitors only. The charge pump generates positiv... | 04/14/2011 |
| 20110062895 | Circuit for driving an infrared transmitter LED with temperature compensation Systems and methods to achieve a circuit for driving one or more infrared transmitter LEDs with temperature compensation have been disclosed. In a preferred embodiment of the invention the circuit has been applied for a rain sensing system. The junction temperature of t... | 03/17/2011 |
| 20110057825 | Diode smart track Systems and methods to achieve a logarithmic digital-to-analog converter (DAC), which is easy to be implemented, and requiring reduced chip space have been disclosed. The logarithmic DAC is created by a simple and easy to scale linear DAC, which is linearly scaling a pr... | 03/10/2011 |
| 20110037517 | Concept, method and apparatus of improved distortion switched-mode amplifier Systems and methods for switched-mode amplifiers having improved harmonic distortion are disclosed. High order in-band filtering is enabled without undue trade-off of distortion due to intermodulation/aliasing. A pre-modulation block is introduced, deployed between a lo... | 02/17/2011 |
| 20110006749 | Startup circuit for bandgap voltage reference generators Systems and methods to achieve a startup circuit of bandgap voltage reference generator circuits monitoring a current flow in the bandgap voltage reference generator circuit have been achieved. The startup circuit can operate at supply voltages of about one threshold vo... | 01/13/2011 |
| 20100295861 | Extended multi line address driving A circuit for a flat panel display includes an image storage block, a display and timing controller block, an image pixel matrix containing a multitude of row and column arranged pixel elements, also one or more controlled row and column driver blocks, and a pixel displ... | 11/25/2010 |
| 20100295860 | Tagged multi line address driving A circuit for a flat panel display includes an image data storage and processing block, a display and timing controller block, an image pixel matrix containing a multitude of row and column arranged pixel elements, one or more controlled row and column driver blocks, an... | 11/25/2010 |
| 20100295845 | Back to back pre-charge scheme A circuit for a flat panel display, capable of displaying images, is provided. The circuit includes an image storage block for storing the images to be displayed, a display and timing controller block controlling the display operation, an image pixel matrix containing a... | 11/25/2010 |
| 20100295760 | Advanced multi line addressing A circuit for a flat panel display, capable of displaying images, is provided. The circuit includes an image storage and processing block for the images to be displayed, a display and timing controller block controlling the display operation, an image pixel matrix conta... | 11/25/2010 |
| 20100289590 | Self-trim and self-test of on-chip values A self-trim circuit provides a technique to trim a CUT (circuit under trim) using a LSB offset to determine the best digital value to trim the CUT. The self-trim circuit is also used to self-test the digital and analog portions of the self-trim circuitry, whereby the ex... | 11/18/2010 |
| 20100245142 | TRI-LEVEL DYNAMIC ELEMENT MATCHER ALLOWING REDUCED REFERENCE LOADING AND DAC ELEMENT REDUCTION Systems and methods using the same to achieve a tri-level multi-bit delta-sigma DAC having reduced power consumption and voltage droop have been achieved. A new rotation-based first order noise-shaping Dynamic Element Matcher (DEM) technique for use with 3-level unit el... | 09/30/2010 |
| 20100244783 | Load current dependent reduction of charge battery current Circuits and methods to charge batteries of a portable device simultaneously with supplying power to the device for its operation, using a power source with limited maximum current, as e.g. an USB port, have been achieved. The system invented relies upon digital control... | 09/30/2010 |
| 20100237845 | Charge current reduction for current limited switched power supply Circuits and methods for a switched power converter providing charge power for at least one battery and at the same time delivering current to operate an electronic device, wherein the converter is enabled to operate out of current limit mode, for the maximum possible r... | 09/23/2010 |
| 20100156501 | Adjustable integrator using a single capacitance An integrating amplifier on an IC, which comprises a feedback loop using an external device as an integrating capacitor, has added a second feedback loop that provides an additional current to the input of the amplifier, which current can be used to increase the input r... | 06/24/2010 |
| 20100097125 | HVNMOS/HVPMOS switched capacitor charge pump having ideal charge transfer An integrated circuit for a charge pump with a charge stage and a pump stage and a single High-Voltage PMOS (HVPMOS) transistor as the main switch for each stage and two times two minimum HVPMOS transistors in series as a bulk switch with fixed bulk connections, where t... | 04/22/2010 |
| 20100045329 | Probeless DC testing of CMOS I/O circuits A method and implementation is described by which I/O input and output circuitry of a CMOS chip are measured without the need to probe the chip. Output driver transistors are used to provide marginal voltages to test input circuits, and the output driver transistors are... | 02/25/2010 |
| 20100007318 | Buck converter threshold detection for automatic pulse skipping mode Circuits and methods to detect a threshold for entering and leaving a discontinuous current mode of a buck converter have been disclosed. A buck converter is switched to continuous mode if the filtered battery current has reached a defined threshold current Ithccm. In o... | 01/14/2010 |
| 20090319821 | Glitch-free clock suspend and resume circuit Circuits and methods to provide a digital clock signal, which can be instantly halted without glitches and then resumes under control of an asynchronous suspend signal with whole width clock pulses has been achieved. The circuit suspends the clock output in either a hig... | 12/24/2009 |
| 20090315410 | Ultra-low current push-button switch interface circuit Circuits and methods to achieve a switch interface circuit for a single pole, single throw (SPST) momentary push-button switch consuming a few tens of nanoamps whilst the push-button switch is closed, having low impedance input path when the switch is open in order to e... | 12/24/2009 |
| 20090267571 | Load current dependent reduction of charge battery current Circuits and methods to charge batteries of a portable device simultaneously with supplying power to the device for its operation, using a power source with limited maximum current, as e.g. an USB port, have been achieved. The system invented relies upon digital control... | 10/29/2009 |
| 20090261888 | AUTONOMOUS CONTROL OF MULTIPLE SUPPLY VOLTAGE GENERATORS FOR DISPLAY DRIVERS Circuits and methods to operate an arrangement of one or more charge pumps with two or more power supplies where each supply is able to vary over a range of voltages, and where any one supply can be of a higher or lower voltage than any of the others have been achieved.... | 10/22/2009 |
| 20090212760 | Supply current based testing of CMOS output stages A CMOS driver test configuration, which allows both leakage current and load current testing, using a single monitor, or current meter, located in a power lead of a tester connected to a power pad servicing the driver circuits. Both leakage testing and load current test... | 08/27/2009 |
| 20080136387 | Buck converter with inductor pre-energizing Circuits and methods to achieve a buck-boost converter, capable to achieve a constant output voltage by pre-charging of an inductor if the input voltage is close to the output voltage has been achieved. The prior art problem of output voltage variations occurring while ... | 06/12/2008 |
