Other

Koninklijke Philips Corporation N.V.

North American Philips Corporation

Philips Electronics North America Corporation

Cliveden Ltd.

Stephen A Herman

Thomas M Marshall

Michael D Pashley

Johan Gerard Janssen

Gerard Harbers

Gert W Bruning

Jeffrey Arthur Shimizu

Erwin B Bellers

James Wallace Wendorf

Charles A Lish

Garrett J Swank

Estit S Ramirez

An actuating mechanism for a door includes a first antenna block having a first integrated microcontroller electrically connected to a first transceiver device and a first antenna. A second antenna block having a second integrated microcontroller is electrically connected to a second transceiver device and a second antenna. A processor device is electrically connected between the first and second microcontrollers and a first switch. The first and second antennas receive a first radio frequency signal from a third, mobile transceiver device. The processor device measures a time difference of arrival (TDOA) of the first radio frequency signal. The processor device computes a direction of arrival (DOA). The DOA measurement is compared against a predefined range of DOAs. The processor device sends a control signal to the first switch to actuate the door in the event of a match.

Door actuator and opener

There is disclosed an apparatus for performing segmentation-based enhancements of a video image. The apparatus comprises: 1) an input buffer for storing video frames of an incoming video signal; 2) a segmentation controller capable of segmenting a first stored frame into a plurality of segments, each of the plurality of segments comprising a plurality of pixels having at least one common property; 3) an image processor capable of calculating a probability function associated with at least one pixel in the first stored frame, the probability function indicating a probability that the at least one pixel belongs within a first selected one of the plurality of segments; and 4) an enhancement controller capable of enhancing a parameter of the at least one pixel as a function of the probability function of the at least one pixel.

System and method for performing segmentation-based enhancements of a video image

There is disclosed an apparatus and method for highlighting one or more selected portions of a display screen. The apparatus comprises a color shift controller capable of receiving a user input selecting one of a plurality of portions of a display screen and, in response to the user input selection, modifying the value of the pixels within the selected portion to increase the color temperature of the pixels. The method comprises selecting a portion of the display screen and increasing the color temperature of at least one color within the selected portion of the display screen. In one advantageous embodiment of the present invention, the color shift controller modifies white color pixel values in a selected portion of the display screen to new white color pixel values that have a higher color temperature. The higher color temperatures increase the apparent brightness of the displayed images.

Apparatus and method for highlighting selected portions of a display screen

Pixels in a video image may be segmented based upon selected criteria, such as a common color, texture, shape, amplitude range or temporal variation. Color values for these pixels may be used to calculate a color probability function which indicates the probability that the color value of the pixel will lie within a designated range of values. The pixels are also used to calculate a texture probability function that indicates whether the pixel represents a designated texture. Pixels that are assigned to a given segment may then be further processed to improve the quality of an image. In this manner, pixels that identify grass, sky, human skin, etc. may be identified and processed in order to achieve a more pleasing appearance.

Automatic segmentation-based grass detection for real-time video

A hybrid lighting system for producing white light including at least one light emitting diode and phosphor-light emitting diode. The hybrid lighting system exhibits improved performance over conventional LED lighting systems that use LEDs or phosphor-LEDs to produce white light. In particular, the hybrid system of the invention permits different lighting system performance parameters to be addressed and optimized as deemed important, by varying the color and number of the LEDs and/or the phosphor of the phosphor LED.

LED/phosphor-LED hybrid lighting systems

There is disclosed an apparatus for correcting the color of objects appearing in a video image. The apparatus comprises: 1) a frame buffer for receiving and storing a first video frame from an incoming baseband video signal; 2) a memory for storing known pixel data corresponding to a plurality of known icons, the known pixel data comprising true color data values associated with the plurality of known icons; and 3) a color correction controller for comparing captured pixel data from the stored first video frame with the known pixel data stored in the memory and detecting a first actual image of a first known icon appearing in the stored first video frame. The color correction controller also compares a first true color data value associated with the first known icon and a first actual color data value associated with a first actual color in the first actual image of the first known icon. In response to the comparison, the color correction controller determine a first color correction factor associated with the first actual color data value.

Apparatus and method for correcting signal and color degradation in a video using known icons from video images

A lens array for a lamp directs light to a light conduit such as an optical fiber or light pipe for guiding light to a remote location. An array of LED serve as light sources. The lens array includes an integrally formed member having a number of collimator lenses positioned in the lens array so that each lens can operate as a collimator for a corresponding LED to produce a respective collimated beam of light. The lenses have optical properties that are optimized according to where their corresponding LED are positioned in the LED array, so that the lens array is provided with lens prescriptions that produce refraction of the collimated beams of light toward an entrance aperture of the light conduit.

One-piece lens arrays for collimating and focusing light and led light generators using same

A faceted surface has first and second facets which deflect respective first and second light beams to produce first sub-beams which alternate with second sub-beams. The faceted surface may be a reflector having first facets at 120&deg; to second facets for mixing light beams which are incident at 120&deg; to each other. 100% of reflected sub-beams from each source alternate with 100% of sub-beams from the other source. The faceted surface may also be a refractor which is part of a transparent block having two parallel faceted surfaces. A first refractive surface refracts parallel light beams to produce diverging beams which are each split into spaced apart sub-beams by the second refractive surface. 50% of refracted sub-beams originating from each source alternate with 50% of refracted sub-beams of each adjacent source.

Apparatus for mixing light from different color LEDs

A linear array of LED light sources in a plurality of colors is situated along the length of a reflector which is positioned so that it receives substantially all the light within the semi-cone angles of the sources, and is shaped so that it is illuminated substantially uniformly along its width. The reflector may be configured as a smooth Lambertian surface, or may be configured as a curve approximated by a series of flat specular reflecting segments.

Low-profile luminaire having a reflector for mixing light from a multi-color linear array of LEDs

A light source includes an array of LEDs in each of a plurality colors such as red, green, and blue in the entrance aperture of a tubular reflector which preferably has convex walls facing the optic axis and flares outward toward the exit aperture, and preferably has a polygonal cross section such as a square. Mixing of colors is further promoted by utilizing a large number of small LEDs with the LEDs of each color being centered on the optic axis.

Luminaire having a reflector for mixing light from a multi-color array of leds

A device, e.g., a luminaire, that includes a plurality of LEDs connected in series, and an active shunt arrangement for sensing a failure of one or more of the LEDs and for shunting current that would have otherwise flowed through a failed LED, to thereby maintain a flow of current through remaining ones of the plurality of LEDs. In one exemplary embodiment, the active shunt arrangement includes a plurality of active shunts connected in parallel across respective ones of the LEDs, and remote sense and digital control logic for detecting an open-circuit condition of the normally closed circuit, and for sequentially activating the active shunts until the normally closed circuit has been restored to a closed-circuit condition. In another exemplary embodiment, the active shunt arrangement includes a plurality of active shunts connected in parallel across respective ones of the LEDs, a plurality of sense circuits operatively associated with respective ones of the LEDs, each of the sense circuits being configured to sense a failure condition of its associated LED, and to produce a sense output signal upon sensing a failure condition of its associated LED, and a plurality of control circuits operatively associated with respective ones of the LEDs and respective ones of the sense circuits, each of the control circuits being responsive to the sense output signal produced by its associated sense circuit to activate the active shunt connected across its associated LED. Preferably, each of the active shunts is an active switching device, such as a power MOSFET, a bipolar transistor, or a micro-relay, that has a low on-resistance.

LED array having an active shunt arrangement

Ordinarily, television signals are subjected to gamma correction at the source to compensate for non-linearities in CRT-based displays in accordance with set standards. However, it has been found in practice that all CRT-based displays do not exhibit the same amount of non-linearity. Hence, some television receivers include gamma correction circuitry which compensate for the difference between the particular CRT display and that assumed by the transmission system standard. In addition the above, circuitry is added for adapting this correction to local areas on the display thereby achieving dynamic range equalization. The input video signal is first low-pass filtered and then subjected to a normalization between 0.0 and a first predefined maximum value A. A second predefined value B is then added to this normalized signal generating a gamma exponential. At the same time, the input video signal is normalized for the range 0.0 and 1.0. This normalized input signal is then raised to an exponential power equivalent to the gamma exponential. Finally, this resultant signal is re-scaled back to the dynamic range of the input video signal. The resultant video signal on display then has the dark portions thereof more visible without the bright parts looking washed out.

Method and apparatus for performing dynamic gamma contrast control

The present invention provides a method of medical treatment for a medical condition in a mammal. In this method, a pharmacologically effective amount for treatment of the condition of a trioxolane or a diperoxide of a non-terpene unsaturated hydrocarbon is applied to the mammal. The invention also provides methods of modulating the immune system in a mammal, of treating inflammation of a tissue in a mammal, and of treating bacterial, fungal, protozoal and viral infections in a mammal.

Medical uses of trioxolane and diperoxide compounds

The present invention provides a method of medical treatment for systemic disorders and oral pharyngeal conditions in a mammal. In this method, a pharmacologically effective amount for treatment of the disorder or condition of a trioxolane or a diperoxide of an unsaturated hydrocarbon, such as a terpene or non-terpene, is applied to the mammal. The invention also provides pharmaceutical compositions for use in these methods.

Growing community of inventors

Tucson, AZ, United States of America

Stephen A Herman