Patent application number | Description | Published |
20090015971 | COHERENT SPIN VALVE AND RELATED DEVICES - Embodiments of the present invention are directed toward the field of spintronics, and in particular, systems and devices capable of performing spin coherent quantum logic operations. The inventive spin valve comprises two ferromagnetic electrode layers, and a non-magnetic conducting layer positioned therebetween. An external magnetic field | 01-15-2009 |
20100102250 | PHOSPHOR BASED AUTHENTICATION SYSTEM - A phosphor (photo-luminescent) material based authentication system in which a blend (mixture) of at least two, preferably three or more, phosphor materials are used as a photo-luminescent security marking which is applied to or incorporated within an article/document to be authenticated. Preferably, the phosphor materials are each excitable by “eye safe” excitation radiation comprising visible light of wavelength 380 nm to 780 nm. Moreover, when excited the security marking preferably also emits visible light thereby minimizing any risk of damage to an operator's eye in the event of accidental exposure to the excitation radiation and/or light generated by the photo-luminescent marking. The authenticity of the article/document can be authenticated by verification of the composition of the phosphor by exciting the marking and comparing one or more selected parameters of light emitted by the security marking with corresponding parameters of the characteristic emission spectrum of the authentic phosphor blend. | 04-29-2010 |
20100164346 | LIGHT EMITTING DEVICE WITH PHOSPHOR WAVELENGTH CONVERSION - A light emitting device comprises: a thermally conductive substrate (MCPCB); at least one LED mounted in thermal communication with a surface of the substrate; a housing attached to the substrate and configured such the housing and substrate together define a volume that totally encloses the at least one LED, the housing comprising at least a part that is light transmissive (window); and at least one phosphor material provided on an inner surface of the housing within said volume said phosphor being operable to absorb at least a part of the excitation light emitted by the at least one light emitting diode and to emit light of a second wavelength range. The housing is attached to the substrate such that the volume is substantially water tight, preferably air/gas tight. | 07-01-2010 |
20100237760 | LED Based Lamp - A lamp comprises: a thermally conductive body; a plurality of LEDs configured as an array and mounted in thermal communication with the body and a light reflective hood located in front of the plane of light emitting diodes. The hood has at least two frustoconical light reflective surfaces that surround the array of LEDs and are configured such that in operation light emitted by the lamp is within a selected emission angle (beam spread). The hood is configured such that in operation a variation in illuminance (luminous flux per unit area incident on a surface) is 10% or less over approximately a third to one half of the selected emission angle. | 09-23-2010 |
20100321919 | LED BASED LAMP AND LIGHT EMITTING SIGNAGE - An LED based lamp comprises: an enclosure with an opening that comprises a light emission plane through which light is emitted from the lamp; a plurality of LEDs located along at least one wall of the enclosure and operable to generate light of a first wavelength range, wherein the LEDs are configured such that in operation their emission axis is oriented within a plane that is substantially parallel with or directed away from the light emission plane; and a first light reflective surface located on the base of the enclosure and configured such that in operation light is reflected through the light emission plane. A light emitting sign comprises the lamp of the invention with a light transmissive display surface overlying the light emission plane. | 12-23-2010 |
20110058353 | LED-BASED LAMPS - An LED-lamp (lighting bar) comprises a plurality of solid state light emitters (LEDs) configured as an elongate (linear) array and a generally concave cylindrical light reflective surface disposed along the length of the array of LEDs. The concave light reflective surface is configured to direct light over an illumination plane located to a side of the lamp. The LEDs can be configured such that their emission axes are oriented to the illumination plane at an angle of between 0° and 90. The lamp can further comprise a second generally concave cylindrical light reflective surface in which the concave light reflective surfaces are configured to direct light over illumination planes located on respective sides of the lamp. There is also disclosed a panel lamp and sign incorporating the lamp(s) of the invention. | 03-10-2011 |
20110110095 | SOLID-STATE LAMPS WITH PASSIVE COOLING - A solid-state lamp comprises a body having a first chamber with inlet apertures and a second chamber with outlet apertures. The chambers are interconnected in fluid communication by one or more passages. The lamp further comprises a thermally conductive substrate having a heat radiating surface located within at least one chamber and one or more solid-state light emitters, typically LEDs, mounted in thermal communication with the thermally conductive substrate. The lamp is configured such that in operation heat generated by the LEDs is radiated by the substrate into one or both chambers causing a difference in air pressure between the chambers that results in surrounding air being drawn into the inlet apertures, flowing through the chambers via the interconnecting passages in the substrate and exiting through the outlet apertures thereby cooling the substrate and LEDs. | 05-12-2011 |
20110149548 | LIGHT EMITTING DIODE BASED LINEAR LAMPS - A linear lamp (lighting bar) comprises: a linear array of LEDs and an elongate lens disposed over the array of LEDs. The lens comprises a generally concave central portion (divergent) and generally convex edge portions (convergent) and is configured such that in operation a variation in illuminance is less than 10% over an angular range of at least 90°. In one arrangement the concave central portion comprises an inner generally concave surface that faces the LEDs and an outer substantially planar and/or generally concave surface overlying the LEDs. The convex edge portions can comprise an outer generally convex surface. The lamp is suited for use in a light box for light emitting signage, under-cabinet/under-shelf lighting, cove lighting, retail display lighting, advertisement display lighting, wall sconce lighting and outdoor or indoor area lighting | 06-23-2011 |
20120140436 | SOLID-STATE LAMPS WITH LIGHT GUIDE AND PHOTOLUMINESCENCE MATERIAL - A solid-state lamp comprises a light guide having at least one light emitting face and at least one solid-state light source (LED) configured to couple light into the light guide. The lamp further comprises a pattern of light extracting features for promoting emission of light from the light guide wherein the pattern of light extracting features is formed on at least one face of the light guide. | 06-07-2012 |
20120140466 | LED SPOTLIGHT - An LED spotlight that is operable to emit light with a selected emission angle measured relative to an emission axis of the spotlight comprises: a dish shaped (parabolic) reflector and a plurality of LEDs, wherein the LEDs are configured such that in operation each emits light in a generally radial direction to the emission axis of the spotlight and wherein the light emission axis of the LEDs is configured at an angle to the emission axis of the spotlight of at least 40°. In preferred embodiments the LEDs are configured such that their emission axis is substantially orthogonal to the emission axis of the spotlight and the reflector comprises a respective parabolic light reflective surface portion associated with a respective one of the LEDs. | 06-07-2012 |
20130088848 | SOLID-STATE LAMPS WITH IMPROVED RADIAL EMISSION AND THERMAL PERFORMANCE - A solid-state lamp comprises: one or more solid-state light emitting devices (typically LEDs); a thermally conductive body; at least one duct; and a photoluminescence wavelength conversion component remote to the one or more LEDs. The lamp is configured such that the duct extends through the photoluminescence wavelength conversion component and defines a pathway for thermal airflow through the thermally conductive body to thereby provide cooling of the body and the one or more LEDs. | 04-11-2013 |
20130088849 | SOLID-STATE LAMPS WITH IMPROVED RADIAL EMISSION AND THERMAL PERFORMANCE - A solid-state lamp comprises: one or more solid-state light emitting devices (typically LEDs); a thermally conductive body; at least one duct; and a photoluminescence wavelength conversion component remote to the one or more LEDs. The lamp is configured such that the duct extends through the photoluminescence wavelength conversion component and defines a pathway for thermal airflow through the thermally conductive body to thereby provide cooling of the body and the one or more LEDs. | 04-11-2013 |
20130176723 | SOLID-STATE LAMPS WITH IMPROVED RADIAL EMISSION AND THERMAL PERFORMANCE - A solid-state lamp is described that includes a first light emission zone and a second light emission zone, where the first light emission zone is longitudinally spaced apart from the second light emission zone. The light emission zones comprise a photoluminescence wavelength conversion component and a solid state light emitting device. The lamp comprises a lower body, a central body, and an upper duct, where the central body, and the upper duct together define at least one passageway/duct for thermal airflow. | 07-11-2013 |
20130176724 | SOLID-STATE LAMPS WITH IMPROVED RADIAL EMISSION AND THERMAL PERFORMANCE - A solid-state lamp is described that includes a wavelength conversion component located at one end of the lamp. The solid-state lamp comprises: one or more solid-state light emitting devices (typically LEDs); a thermally conductive body; at least one duct; and a photoluminescence wavelength conversion component remote to the one or more LEDs, located at one end of the lamp. The lamp is configured such that the duct extends through the photoluminescence wavelength conversion component and defines a pathway for thermal airflow through the thermally conductive body to thereby provide cooling of the body and the one or more LEDs. | 07-11-2013 |
20130214676 | SOLID-STATE LAMPS WITH IMPROVED EMISSION EFFICIENCY AND PHOTOLUMINESCENCE WAVELENGTH CONVERSION COMPONENTS THEREFOR - A solid-state lamp comprising: an array of solid-state excitation sources and a photoluminescence wavelength conversion component comprising a layer of photoluminescence material and a coupling optic. The layer of photoluminescence material is remote to the excitation sources and the coupling optic is disposed between the excitation sources and the layer of photoluminescence material. The ratio of the photoluminescence material surface area of the layer of the photoluminescence material to the excitation source surface area for the array of solid-state excitation sources is at least 3 to 1. | 08-22-2013 |
20130293098 | SOLID-STATE LINEAR LIGHTING ARRANGEMENTS INCLUDING LIGHT EMITTING PHOSPHOR - A solid-state linear lamp comprises a co-extruded component, the co-extruded component comprising an elongate lens and a layer of photoluminescent material. The elongate lens is for shaping light emitted from the lamp and comprises an elongate interior cavity. The layer of a photoluminescent material is located on an interior wall of the elongate interior cavity. The lamp further comprises an array of solid-state light emitters configured to emit light into the elongate interior cavity. | 11-07-2013 |
20140021495 | LIGHT EMITTING DEVICE WITH PHOSPHOR WAVELENGTH CONVERSION - A light emitting device comprises: a thermally conductive substrate (MCPCB); at least one LED mounted in thermal communication with a surface of the substrate; a housing attached to the substrate and configured such the housing and substrate together define a volume that totally encloses the at least one LED, the housing comprising at least a part that is light transmissive (window); and at least one phosphor material provided on an inner surface of the housing within said volume said phosphor being operable to absorb at least a part of the excitation light emitted by the at least one light emitting diode and to emit light of a second wavelength range. The housing is attached to the substrate such that the volume is substantially water tight, preferably air/gas tight. | 01-23-2014 |
20140211467 | SOLID-STATE LAMPS WITH OMNIDIRECTIONAL EMISSION PATTERNS - An inventive LED-based lamp, lamp cover component, and methods for manufacturing thereof are disclosed which provides a light diffusive lamp cover having a diffusivity (transmittance) that is different for different areas (zones or regions) of the cover. The diffusivity and location of those areas are configured so that the emission pattern of the whole lamp meets desired emissions characteristics and optical efficiency levels. The diffusive cover may have any number of specifically delineated diffusivity areas. Alternatively, the cover may provide a gradient of increasing/decreasing diffusivity portions over the cover. | 07-31-2014 |
20140306599 | SOLID-STATE LINEAR LIGHTING ARRANGEMENTS INCLUDING LIGHT EMITTING PHOSPHOR - A solid-state linear lamp comprises a co-extruded component, the co-extruded component comprising a photoluminescent portion and a support body, where the photoluminescent portion is integrally formed with the support body. The co-extruded component is formed to comprise an interior cavity for receiving insertion of a substrate having one or more light emitters. The array of solid-state light emitters is configured to emit light into the elongate interior cavity. | 10-16-2014 |
Patent application number | Description | Published |
20100220791 | Video coding and decoding method and codex based on motion skip mode - A video coding method based on a motion skip mode (MSM) is provided. The method includes the following steps. A corresponding reference block of a current macro block to be encoded in a view-point reference image is determined, according to a direction of a disparity vector from a current image relative to the view-point reference image deduced by using a block smaller than 16×16 pixels as a base unit. The current macro block to be encoded is then encoded according to motion information of a macro block that the determined corresponding reference block belongs to. Other related video coding methods and corresponding codecs based on the MSM are also provided. Therefore, macro block motion information (MMI) of the currently encoded macro block at a corresponding position in the view-point reference image can be more accurately obtained, thereby improving a coding efficiency of the MSM. | 09-02-2010 |
20100266048 | VIDEO ENCODING AND DECODING METHOD AND DEVICE, AND VIDEO PROCESSING SYSTEM - A video encoding and decoding method and device and a video processing system are provided. In the encoding method and device, ordinate and abscissa position information of each block in a searching area is established by selecting an appropriate origin of coordinates of the searching area; meanwhile, an offset of a current macro block is encoded by using information of peripheral blocks of the macro block encoded currently as a context for encoding position offset information of a corresponding macro block in an adjacent view reference image of the current macro block. In the decoding method and device, position information of a corresponding macro block in a coordinate system is obtained by parsing offset information of the corresponding macro block of the current macro block, and motion information of the corresponding macro block is used as motion information of the current macro block. So the coding efficiency is increased. | 10-21-2010 |
20110273537 | METHOD AND APPARATUS FOR COMPUTING A PARALLAX - A method and an apparatus for computing a parallax are provided. The method includes: obtaining a plurality of views of a pixel point; computing gradients in a plurality of directions of the pixel point in the plurality of view; computing a matching error corresponding to a parallax of the pixel point according to the gradients; and computing the parallax of the current pixel point according to the matching error. Through the method and the apparatus for computing a parallax, the accuracy of parallax estimation is increased. | 11-10-2011 |
20130136180 | Unified Partitioning Structures and Signaling Methods for High Efficiency Video Coding - A method for video coding comprising signaling a prediction mode and a partition mode for a coding unit via a string of bits, wherein one of the bits in the string indicates whether or not the partition size for the coding unit is equivalent to the entire coding unit and another of the bits in the string indicates whether the coding unit partitions are horizontal strips or vertical strips, and wherein, when a slice type of the coding unit is either predictive or bi-predictive, one of the bits in the string indicates whether the prediction type is intra or inter. | 05-30-2013 |
20130215964 | Scanning Method and Device, and Reverse Scanning Method and Device - A scanning method and device, and a reverse scanning method and device in coding and decoding technologies are provided. The scanning method includes: receiving quantized transformed coefficients of a current block; obtaining a prediction direction of the current block; finding, according to the prediction direction, a scanning order corresponding to the prediction direction of the current block from a mapping relationship table of the prediction direction and the scanning order, wherein at least one scanning order in the mapping relationship table of the prediction direction and the scanning order corresponds to at least two prediction directions; and performing scanning processing on the coefficients by using the scanning order corresponding to the prediction direction of the current block. With the solutions of the present invention, the number of the scanning orders used in coding and decoding is decreased, and system complexity of a codec system is reduced. | 08-22-2013 |
20130315304 | METHOD FOR BINARIZING INTRA PREDICTION MODE AND METHOD, APPARATUS, AND SYSTEM FOR DECODING INTRA PREDICTION MODE - A method and an apparatus for binarizing an intra prediction mode are provided. The method includes: acquiring an intra prediction mode of a luma component; if the intra prediction mode of the luma component is one kind of prediction mode in M, modifying a value of a serial number of a prediction mode Luma Angle of a chroma component to I; sequencing all prediction modes of the chroma component according to a preset rule; and performing binarization on the modified Luma Angle, and sending the binarized Luma Angle to a decoding end. A method for coding an intra prediction mode and a method and an apparatus for decoding an intra prediction mode are further provided. According to the present invention, coding efficiency is improved. | 11-28-2013 |
20140079117 | ENCODING METHOD AND DEVICE, AND DECODING METHOD AND DEVICE - An encoding includes: obtaining, by an encoder, data to be encoded, where the data to be encoded is at least one LCU; determining, a quantization depth parameter of the LCU according to a preset bit rate control algorithm, and adding the quantization depth parameter into the data to be encoded; determining, a QP of each CU according to a size of a minimum picture block and a size of each CU included in the LCU; calculating, by the encoder, a QP difference of each CU according to the QP of each CU and a QP prediction value of each CU; for each CU that satisfies a preset condition, carrying, by the encoder, the QP difference of the CU in the CU; and encoding, by the encoder, the quantization depth parameter, the QP difference of the CU that satisfies the preset condition, and each CU to obtain a bit stream. | 03-20-2014 |
20140098862 | ENCODING OR DECODING METHOD AND APPARATUS - Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information. | 04-10-2014 |
20140233641 | INTRA-FRAME DECODING METHOD AND APPARATUS FOR SIGNAL COMPONENT SAMPLING POINT OF IMAGE BLOCK - Embodiments of the present invention provide an intra-frame decoding method and apparatus for a signal component sampling point of an image block. The method includes: obtaining prediction mode information about a first signal component of a current block from a video code stream; determining a prediction mode for the first signal component of the current block, where the prediction mode for the first signal component of the current block is one of a DM mode and an LM mode; obtaining a prediction value of a first signal component sampling point of the current block according to the prediction mode for the first signal component of the current block; and obtaining a reconstruction value of the first signal component sampling point of the current block. The technical solutions provided by the embodiments of the present invention reduce complexity of implementing a decoding end. | 08-21-2014 |
20140233650 | Intra-Frame Prediction and Decoding Methods and Apparatuses for Image Signal - An intra-frame decoding method is provided. The method includes: obtaining, from a video code stream, prediction mode information of a first signal component of a current block; determining a prediction mode of the first signal component of the current block from a prediction mode set of the first signal component of the current block according to the prediction mode information of the first signal component of the current block, where the prediction mode set of the first signal component of the current block includes at least one of a linear model above (LMA) mode and a linear model left (LML) mode; obtaining a predicted value of a first signal component sampling point of the current block; and obtaining a reconstructed value of the first signal component sampling point of the current block according to the predicted value of the first signal component sampling point of the current block. | 08-21-2014 |
20140241423 | IMAGE CODING AND DECODING METHODS AND APPARATUSES - An embodiment of the present invention provides an image coding method, where the coding method includes: performing predictive coding on an image; performing transform coding on the image on which the predictive coding has been performed; performing, by using a quantization matrix, quantization coding on the image on which the transform coding has been performed, where the quantization matrix is a matrix reflecting image quantization step information, the quantization matrix includes an M*N quantization matrix and an N*M quantization matrix, and the N*M quantization matrix is obtained by transposing the M*N quantization matrix; and performing entropy coding on the image on which the quantization coding has been performed, and coding the M*N quantization matrix, so as to generate a code stream. In the present invention, the number of bits required for coding a quantization matrix is effectively saved, thereby improving compression efficiency. | 08-28-2014 |
20140247880 | VIDEO IMAGE CODING AND DECODING METHOD AND APPARATUS - The present invention relates to a method for coding and decoding a video signal, and provides a method for coding a video signal, including: determining space adjacent motion information of a parallel motion processing region PR; determining time adjacent motion information of a current block, where the current block is located in the parallel motion processing region PR; determining a candidate mot ion information set according to the space adjacent motion information of the parallel motion processing region PR and the time adjacent motion information of the current block; selecting motion information of the current block from the candidate motion information set, and sending a motion information indication of the current block to a decoding end, so as to assist the decoding end in determining the motion information of the current block; and performing motion compensation coding for the current block according to the motion information of the current block. | 09-04-2014 |
20140328399 | ENCODING OR DECODING METHOD AND APPARATUS - Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information. | 11-06-2014 |
20140341282 | ENCODING OR DECODING METHOD AND APPARATUS - Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information. | 11-20-2014 |