Patent application number | Description | Published |
20080204468 | Graphics processor pipelined reduction operations - In general, in one aspect, the disclosure describes a method to initialize a texture buffer and pipeline reduction operations by utilizing the texture buffer. | 08-28-2008 |
20100034274 | FAST MULTI-FRAME MOTION ESTIMATION WITH ADAPTIVE SEARCH STRATEGIES - A method includes examining a statistical distribution of motion vectors employed for motion compensation in a first frame of image data. The examining is to produce a distribution model of the motion vectors in the first frame. The method further includes selecting, based at least in part on the distribution model, a block-matching search pattern for use with respect to a second frame of image data. The second frame follows the first frame in a sequence of frames of image data. | 02-11-2010 |
20100161911 | METHOD AND APPARATUS FOR MPI PROGRAM OPTIMIZATION - Machine readable media, methods, apparatus and system for MPI program optimization. In some embodiments, shared data may be retrieved from a message passing interface (MPI) program, wherein the shared data is sharable by a plurality of processes. Then, the shared data may be allocated to a shared memory, wherein the shared memory is accessible by the plurality of processes. A single copy of the shared data may be maintained in the shared data in a global buffer of the processes of the plurality of processes can read or write the single copy of the shared data from or to the shared memory. | 06-24-2010 |
20130021046 | AUDIO JACK DETECTION CIRCUIT - This document discusses, among other things, a detection system configured to identify a type of a pole of a four-pole audio jack using first and second comparators. The detection system can include a bias circuit configured to bias a detection input coupled to the pole, and first and second comparators configured to compare the detection input to respective first and second thresholds to provide an indication of the type of the pole. | 01-24-2013 |
20130285730 | CLAMP CIRCUIT AND METHOD FOR CLAMPING VOLTAGE - The disclosure provides a clamp circuit and a method for clamping voltage. The clamp circuit includes: a first switch control unit, connected with the high-potential terminal of the first stage output of a comparator and configured to clamp the voltage of the high-potential terminal to V | 10-31-2013 |
20140079129 | FAST MULTI-FRAME MOTION ESTIMATION WITH ADAPTIVE SEARCH STRATEGIES - A method includes examining a statistical distribution of motion vectors employed for motion compensation in a first frame of image data. The examining is to produce a distribution model of the motion vectors in the first frame. The method further includes selecting, based at least in part on the distribution model, a block-matching search pattern for use with respect to a second frame of image data. The second frame follows the first frame in a sequence of frames of image data. | 03-20-2014 |
Patent application number | Description | Published |
20090028008 | HIGH PERFORMANCE DVD WRITING CURRENT CIRCUIT - A writing current circuit ( | 01-29-2009 |
20100080096 | HIGHER PERFORMACNE DVD WRITING CURRENT CIRCUIT - A writing current circuit ( | 04-01-2010 |
20110158075 | Enhanced linearity DVD writing current circuit - A writing current circuit ( | 06-30-2011 |
20110163941 | LED PANEL - An LED panel system comprises a plurality of LEDs arranged into an LED array with rows and columns, each LED having an anode and a cathode, wherein the LEDs are of the same color or of different colors. The LED panel system has a plurality of common cathode nodes, each common cathode node connecting cathodes of the LEDs in a same row; a plurality of common anode nodes, each common anode node connecting anodes of the LEDs of a same color in a same column; and a plurality of power sources, each power source supplying electric power to at least one common anode node. | 07-07-2011 |
20110285321 | LIGHT SOURCE DRIVING CIRCUIT WITH LOW OPERATING OUTPUT VOLTAGE - A driving circuit for regulating current in a light source using a tracking component. The tracking component detects the voltage difference between an input node in the input stage and an output node in the output stage. The input stage is connected to a current source and includes an input transistor. The output stage is connected to the light source and includes an output transistor. The tracking component generates an output that controls the input and output transistors based on the voltage difference between the input node and the output node so that the voltage at the input node tracks the voltage at the output node. By using the tracking component, the LED driver can achieve accurate current control through one output transistor instead of cascaded transistors, resulting in lower output operating voltage and reduced power dissipation of the LED driver. Further, the tracking component is intermittently operated or shared across different channels to reduce energy consumption of the LED driver. | 11-24-2011 |
20120182164 | Signal Transmission between a Controller and an Optical Pickup Unit - An improved transmission protocol is used to transmit a signal between two components of an electronic device. The improved transmission protocol is configured to reduce the number of simultaneous channel transitions that occur when multiple signal channels are transmitted in parallel. Reducing the number of simultaneous channel transitions is beneficial because a signal that is subject to skew, distortion, or electromagnetic interference during transmission may have a shorter settling time when fewer channels undergo a transition simultaneously. When the protocol is used to transmit a signal from a controller to an optical pickup unit in an optical data storage system, the reduced settling times allow for a higher data transmission rate. | 07-19-2012 |
20120206430 | CIRCUITS FOR ELIMINATING GHOSTING PHENOMENA IN DISPLAY PANEL HAVING LIGHT EMITTERS - The present disclosure provides a circuit for discharging parasitic capacitance in a display panel with common-anode topology having a plurality of light emitters, as well as a circuit for charging parasitic capacitance in a display panel with common-cathode topology. In the common-cathode topology, the circuit includes a three-terminal device having a gate, a source, and a drain, wherein one of the source and the drain is electrically coupled to a common cathode of the light emitters, and a mechanism for controlling the three-terminal device, the mechanism being electrically coupled to the gate. Shortly after a previously selected light emitter is unselected, the mechanism turns on the three-terminal device to form a conductive path between the source and the drain. The mechanism turns off the three-terminal device after a voltage at the common cathode is increased to a predetermined voltage level or after a maximum period of time lapses. | 08-16-2012 |
20120327128 | LED DISPLAY SYSTEMS - An LED display system comprises an LED array and an LED driver circuit. An LED driver circuit comprises components including a phase lock loop, a pulse width modulation engine, a configuration register, a gain adjustable fast charge current source, and a serial input/output interface. The components in this driver circuit may be integrated on a same chip. The LED array may be arranged in a common cathode configuration. | 12-27-2012 |
20120327129 | LED DISPLAY SYSTEMS - An LED display system comprises an LED array and an LED driver circuit. An LED driver circuit comprises components including a phase lock loop, a pulse width modulation engine, a configuration register, a series of gain adjustable fast charge current sources, and a serial input/output interface. The components in this driver circuit may be integrated on a same chip. The LED array may be arranged in a common cathode configuration. | 12-27-2012 |
20130140998 | CIRCUITRY AND METHOD FOR DRIVING LED DISPLAY - This disclosure provides a circuit and a method for driving an LED display. The driving circuit comprises a selection circuit for selecting a first light emitter from the plurality of light emitters, a pre-charging circuit for charging an equivalent capacitor of the display panel with respect to the selected first light emitter, and a power circuit for supplying power to the first light emitter after the first light emitter is selected, wherein the power circuit is configured to supply a driving current to the first light emitter in one or more stages. The driving circuit and method of this disclosure can be used to significantly increase the refresh rate and resolution of the LED display. | 06-06-2013 |
20140139139 | APPARATUS AND METHOD FOR DRIVING LED DISPLAY PANEL - The present disclosure provides devices, circuits, and methods for driving an LED display panel, so as to ensure the delivery of equal global charge at minimum gray scale. In one example, the circuit of the present disclosure includes a current source, a detection module, and a measurement module. The current source is configured to generate a current signal for the LEDs. The detection module is configured to detect a forward voltage of the LEDs in response to a low current applied to the LEDs. The detection module is further configured to hold the detected forward voltage. The measurement module is configured to measure a time period for an anode voltage of the LEDs to rise to the detected forward voltage in response to a display current applied to the LEDs. | 05-22-2014 |
20150109190 | Apparatus and Method for Powering LED Driver - A driver circuit for an LED display panel has a first constant current driver to drive green LEDs, a second constant current driver to drive blue LEDs, and a third constant current driver to drive red LEDs. The driver circuit also has an analog power module electrically coupled to the first, the second, and the third constant current drivers. The analog power module has two or more power sources. The driver circuit further includes a digital controller for transmitting digital control signals to the analog driver. The digital controller is powered by a digital power module. | 04-23-2015 |
20150109281 | APPARATUS AND METHOD FOR DRIVING LED DISPLAY - An apparatus for driving LED display includes a plurality of phase locked loop circuits. Each of the phase locked loop circuits includes a divider configured to receive the voltage controlled output signal and generate the feedback signal, a memory configured to generate a modulation profile codes and a sigma delta block. The divider receives a randomized numbers so as to change a dividing ratio over a modulation period. The sigma delta block includes at least one sigma delta modulator and at least one gain block. The sigma delta block is configured to receive the modulation profile codes and generate the randomized numbers to the divider. Each of the at least one gain block is configured to generate a value that is multiplied to at least one of the at least one sigma delta modulator so as to change a spread spectrum modulation depth. | 04-23-2015 |
20150109284 | APPARATUS AND METHOD FOR DRIVING LED DISPLAY - The apparatus for driving LED display includes a system control unit having a synchronization signal generator configured to generate a synchronization start signal and a plurality of phase locked loop circuits. Each of the phase locked loop circuits includes a divider coupled to the voltage controlled oscillator and configured to change the sequence of dividing ratios over a modulation period, a sigma delta modulator configured to generate a sequence of random numbers to the divider, and a spread spectrum modulation depth controller coupled to the sigma delta modulator and configured to receive the synchronization start signal from the synchronization signal generator. Upon receipt of the synchronization start signal, the spread spectrum modulation depth controller starts a spread spectrum modulation. | 04-23-2015 |
20150123555 | LED DISPLAY SYSTEMS - An LED display system comprises an LED array and an LED driver circuit. An LED driver circuit comprises components including a phase lock loop, a pulse width modulation engine, a configuration register, a series of gain adjustable fast charge current sources, and a serial input/output interface. The components in this driver circuit may be integrated on a same chip. The LED array may be arranged in a common cathode configuration. | 05-07-2015 |
20150137705 | APPARATUS AND METHOD FOR DRIVING LED DISPLAY - This disclosure provides an output stage for a LED driver circuit. The output stage has an input module, a regulator module for maintaining a constant internal voltage, and an output module for generating output signals. | 05-21-2015 |
Patent application number | Description | Published |
20140075310 | Method and Apparatus For creating user-defined media program excerpts - The present disclosure involves a method of managing media playback. The method includes: playing a media program via an electronic device; receiving, during the playing of the media program, a first input that defines a beginning of a user-defined excerpt of the media program; receiving, during the playing of the media program, and after the beginning of the user-defined excerpt of the media program has been defined, a second input that defines an end of the user-defined excerpt of the media program; associating the user-defined excerpt of the media program with an account of a user; and thereafter displaying an availability of the user-defined excerpt of the media program. | 03-13-2014 |
20140075316 | Method and apparatus for creating a customizable media program queue - The present disclosure involves a method of displaying media content. The method includes: detecting a first electronic access to a media program account of a user; recording, via one or more electronic processors, a first list of available media programs in the media program account of the user at a time of the first access; detecting a second electronic access to the media program account of the user, wherein the second access occurs after the first access; recording, via the one or more electronic processors, a second list of available media programs in the media program account of the user at a time of the second access; comparing the second list with the first list to identify a third list of available media programs that are in the second list but not in the first list; and communicating the third list of available media programs via an electronic device. | 03-13-2014 |
20150011195 | Automatic volume control based on context and location - The present disclosure involves a method of automatic volume adjustment based on context and location. A determination is made that a mobile computing device has been placed in a vehicle. The determination may be made by detecting that the mobile computing device has been plugged into a dock inside the vehicle, or by detecting that a movement speed of the mobile computing device is within a normal speed range of the vehicle. The mobile computing device has a programmable audio output volume. In response to the determination, the audio output volume of the mobile computing device is automatically increased to a predefined audio output volume. In some embodiments, the volume setting of the mobile computing device is recorded before the volume is automatically increased, and the mobile computing device restores the original volume setting after the mobile computing device is taken out of the vehicle. | 01-08-2015 |
20150022558 | Orientation Control For a Mobile Computing Device Based On User Behavior - The present disclosure involves a method of orientation control. Media content is displayed via a screen of a mobile computing device. The media content is displayed in a first orientation mode. A first satisfaction of a predefined condition is detected. In response to the detected first satisfaction of the predefined condition, the media content is displayed in a second orientation mode different from the first orientation mode. One of the first and second orientation modes is portrait, the other one of the first and second orientation modes is landscape. A second satisfaction of the predefined condition is detected immediately after the media content has been displayed in the second orientation mode. In response to the detected second satisfaction of the predefined condition, the media content is displayed in the first orientation mode. Thereafter, the predefined condition is adjusted in a manner so that it is more difficult to satisfy. | 01-22-2015 |