Patent application number | Description | Published |
20120262339 | Determination of State Vector, Timing, and Navigation Quality Metrics from Reception of ADS-B Transmissions - A technique for determining the position of a mobile device includes receiving messages from respective mobile reference devices. Each of the messages is broadcast beginning at one of several predetermined message start opportunity (MSO) times that have known timings relative to a reference time. Each of the messages contains a MSO value identifying the MSO time at which transmission of the message started. The MSO value is used to determine the time of transmission of each of the messages received at the mobile device, and the position of the mobile device is determined via multi-lateration. According to another approach, the mobile device receives a set of ADS-B messages from a respective set of mobile reference devices. The time of transmission of each of the ADS-B messages is supplied in the ADS-B message itself or in a subsequent message and used to determine the position of the mobile device. | 10-18-2012 |
20140278182 | Reduction of Altitude Error Using Forecasted Atmospheric Pressure Data - A technique for reducing altitude error involves determining a corrected altitude for an aircraft using forecast atmospheric pressure data available, for example, from a weather forecasting service. The forecast atmospheric pressure data includes, for a number of points in time and for a number of geographic locations, a set of pressure levels and corresponding altitude values. Altitude correction data is periodically calculated from the forecast atmospheric pressure data for each of a number of geographic grid points. Upon receiving aircraft position information and an aircraft altitude measurement for an aircraft, one or more of the geographic grid points corresponding to the aircraft position are identified, and a corrected altitude of the aircraft is determined based on the altitude correction data of the one or more geographic grid points. | 09-18-2014 |
20140302775 | Determination of State Vector, Timing, and Navigation Quality Metrics from Reception of ADS-B Transmissions - A technique for determining the position of a mobile device includes receiving messages from respective mobile reference devices. Each of the messages is broadcast beginning at one of several predetermined message start opportunity (MSO) times that have known timings relative to a reference time. Each of the messages contains a MSO value identifying the MSO time at which transmission of the message started. The MSO value is used to determine the time of transmission of each of the messages received at the mobile device, and the position of the mobile device is determined via multi-lateration. According to another approach, the mobile device receives a set of ADS-B messages from a respective set of mobile reference devices. The time of transmission of each of the ADS-B messages is supplied in the ADS-B message itself or in a subsequent message and used to determine the position of the mobile device. | 10-09-2014 |
Patent application number | Description | Published |
20120300047 | SYSTEM AND METHOD FOR SYNCHRONIZING A 3D VIDEO PROJECTOR - A system and method for improving stereoscopic images produced by a projecting device containing a single chip DMD, seen through an eye-switching device, such as a pair of liquid crystal (LC) shutter glasses. The system and method are used with a video projector used with a multiple-color, color switching device The color switching device produces Blue, Red and Green lights and at least one non-critical segment. A color sequencing firmware resident in the video projector is used to align a non-critical segment in front of the projector's main light source during the eye-switching device's unstable transition phase. If the non-critical segment is transmissive, the firmware controls the DMD so light is discontinued. If the non-critical segment is non-transmissive, light is physically blocked. If the non-critical segment is electronically defined, the firmware directly controls the DMD to discontinue the transmission of light for the duration of device's unstable transition phase. | 11-29-2012 |
20140098203 | Video Controller For Synchronizing Presentation Of A Plurality Of Images Projected Onto A Display - A video controller for synchronizing presentation of a plurality of images is provided. A color switching device is operable to continually select a color out of a set consisting essentially of a plurality of fundamental colors. Each fundamental color is selected for presentation for a fixed time segment. A light processing element is operable to block and permit transmission of light in each color selected by the color switching device during each fixed time segment. The light includes at least two streams of sequential images. A synch signal generator is in control of the light processing element and is configured to time presentation of the light by the light processing element and of control signals to a viewing device of the display. The presentation of the light and of the control signals is timed in synchrony with the fixed time segments only during a transition state of the viewing device. | 04-10-2014 |
20140293416 | Stereoscopic Light Recycling Device - A stereoscopic device for recapturing light is provided. A chassis is open on front and back sides and forms a rectangular housing with top, bottom, and two sides that frame the front and back openings. A polarizing beam splitter is angled away from the back opening of the chassis and captively held by the chassis. The beam splitter is constructed of substantially orthogonally polarizing material. A phase shifting optic having a reflective surface coated by a phase shifting film is angled toward the front opening, wherein the beam splitter and phase shifting optic are in optical alignment with each other within the chassis. A modulator sized to cover the front opening is positioned in front of the chassis. | 10-02-2014 |