Patent application number | Description | Published |
20100118159 | Method For Automatic Exposure Control Within A Video Capture Device - On embodiment of the present invention sets forth a technique for automatically computing exposure parameters for a digital video camera (DVC) system. The exposure parameters include exposure gain, analog gain, and digital gain. Each frame is analyzed with respect to an image luma value. Exposure gain and analog gain are adjusted to reduce differences between a target image luma value and measured image luma values over sequential frames. Digital gain is adjusted with respect to each frame to reduce visually abrupt changes in sequentially captured video frames. | 05-13-2010 |
20100118204 | Method For Automatic Exposure Control Within A Video Capture Device - On embodiment of the present invention sets forth a technique for automatically computing exposure parameters for a digital video camera (DVC) system. The exposure parameters include exposure gain, analog gain, and digital gain. Each frame is analyzed with respect to an image luma value. Exposure gain and analog gain are adjusted to reduce differences between a target image luma value and measured image luma values over sequential frames. Digital gain is adjusted with respect to each frame to reduce visually abrupt changes in sequentially captured video frames. | 05-13-2010 |
20120092520 | CROSSTALK FILTER IN A DIGITAL IMAGE PROCESSING PIPELINE - A technique for applying a crosstalk filter to raw image sensor data in a digital image processing pipeline is disclosed. Raw image sensor data generated by an image sensor, where each pixel in the raw image sensor data includes an intensity value for only a single color channel of a plurality of possible color channels, is processed in the digital image processing pipeline. For each pixel of the raw image sensor data, a corrected intensity value is computed based on intensity values associated with one or more additional pixels of the raw image sensor data that neighbor the pixel. | 04-19-2012 |
20130038744 | FAST ZERO RECOVERY WITH ALPHA BLENDING IN GYROSCOPIC IMAGE STABILIZATION - Systems and methods for performing fast zero recovery with alpha blending with digital image stabilization implemented in a digital camera. The digital camera includes a gyroscope to measure motion of the digital camera and processes the signals from the gyroscope to track the total displacement of an image sensor over a series of frames of video. If the motion is a sustained motion in a substantially uniform direction, then the digital camera recognizes the motion as a panning-type motion and activates a fast-zero recovery with alpha blending operation to retrace the displacement of active pixel locations to the center of the image sensor. Alpha blending is performed to smooth the transition from a normal image stabilization operation to the fast-zero recovery with alpha blending operation. | 02-14-2013 |
20130141600 | SYSTEMS AND METHODS FOR PERFORMING GYROSCOPIC IMAGE STABILIZATION - Systems and methods for performing digital image stabilization implemented in a digital camera. The digital camera includes a gyroscope to measure motion of the digital camera and processes the signals from the gyroscope to track the total displacement of an image sensor over a series of frames of video. The algorithm implemented by the digital camera includes a processing block for correcting a DC bias in the signals from the gyroscope, a filter for attenuating the signals during periods of high acceleration, a processing block for detecting the start of a panning motion, and a processing block for quickly retracing the digital image stabilization correction back to the center of the image sensor during a panning motion. | 06-06-2013 |
20130141601 | SYSTEMS AND METHODS FOR PERFORMING GYROSCOPIC IMAGE STABILIZATION - Systems and methods for performing digital image stabilization implemented in a digital camera. The digital camera includes a gyroscope to measure motion of the digital camera and processes the signals from the gyroscope to track the total displacement of an image sensor over a series of frames of video. The algorithm implemented by the digital camera includes a processing block for correcting a DC bias in the signals from the gyroscope, a filter for attenuating the signals during periods of high acceleration, a processing block for detecting the start of a panning motion, and a processing block for quickly retracing the digital image stabilization correction back to the center of the image sensor during a panning motion. | 06-06-2013 |
Patent application number | Description | Published |
20130044529 | Power Supply Control System - A power supply control system for a power supply having a first half-bridge leg and a second half-bridge leg. In the control system, a first plurality of drive signals are configured to operate a half-bridge as a forward leg while a second plurality of drive signals are configured to operate a half-bridge as a backward leg. A switch element is intermediate the first and second plurality of drive signals and the first and the second half-bridge legs, the switch element being adapted to operate the first half-bridge as a forward leg and the second half-bridge as a backward leg in a first operating mode, the switch element being further adapted to operate the first half-bridge as a backward leg and the second half-bridge as a forward leg in a second operating mode. | 02-21-2013 |
20140167727 | Power Control System - A power control system includes a first switch configured to receive electrical power from a power source and selectably provide the electrical power to a load. A current limiter is intermediate the first switch and the load. A second switch is also configured to receive electrical power from the power source and selectably provide electrical power to the load. The power control system includes a soft-start operating mode wherein the first switch is activated to provide the electrical power to the load, current provided to the load being limited by the current limiter. The second switch is also activated to provide the electrical power to the load, the second switch being activated a predetermined period of time after activation of the first switch. The first and second switches are also deactivated while the voltage of the power source exceeds a predetermined level. | 06-19-2014 |
20150207398 | POWER CONVERSION SYSTEM HAVING A HARMONIC DISTORTION LIMITER - An electrical power conversion system having a harmonic distortion limiter. The power conversion system includes a power converter having a power input, a power output, a current measurement output signal, and a control signal input. The system further includes a controller having a voltage control subsystem arranged to measure a voltage present at the power output of the power converter and generate a corresponding current reference signal. A current control subsystem of the controller is arranged to receive the current reference signal and the current measurement output signal and generate a corresponding modulation command signal, the modulation command signal of the controller being electrically coupled to the control signal input of the power converter. The power converter is responsive to the modulation command signal to limit harmonic distortion at the power output of the power converter. | 07-23-2015 |