Abstract: Embodiments of the present application provide a screen projection system, method and apparatus. The system includes a display screen, wherein the display screen is of a fully-closed or partially-closed housing structure, and an inner wall of the housing structure is configured to provide continuous images with a view angle of 180 degrees to 360 degrees in a horizontal direction. The system further includes: at least two groups of projectors, each group including at least one projector. The at least two groups of projectors are hierarchically arranged in a central axis direction of the display screen, each group of projectors is configured to carry out projection onto a portion of an inner wall of the display screen, and light paths of the at least two groups of projectors are configured to avoid audiences and seats. According to the present application, the technical solutions may be applied to different screens.
Abstract: A light source unit includes a first light source for emitting light in a first wavelength range, a luminescent wheel including a second light source for emitting light in a second wavelength range and a third light source for emitting light in a third wavelength range whose wavelength differs from that of the light in the second wavelength range, which are disposed circumferentially end to end in an adjacent fashion, a fourth light source for emitting light in a fourth wavelength range similar in color system to the light in the second or third wavelength range, and a control unit for controlling the fourth light source and the luminescent wheel to illuminate the fourth light source during a first color mixing period when a boundary between the second and third light sources is situated on an optical path of the light in the first wavelength range.
Abstract: Movement of a movable portion without stopping at any moment can be achieved by a simple configuration including a beam structural portion including two beam portions extending in directions different from each other and one driving portion. Furthermore, a size reduction of a device is achieved in comparison with a case where a device includes a motor disposed for rotation driving.
Abstract: A method of adding comfort noise to a video sequence comprising setting parameters of a deblocking filter of a video encoder to change values during the video sequence, encoding frames of the video sequence using the parameters of the deblocking filter that are set to change values during the video sequence, thereby introducing comfort noise in the video sequence, and including the encoded frames in a bitstream together with an indication of which parameters of the deblocking filter were used when encoding the frames of the video sequence.
December 18, 2018
Date of Patent:
November 10, 2020
Alexander Toresson, Viktor Edpalm, Fredrik Pihl
Abstract: Various embodiments described herein relates to a lens cap, adapted to be mechanically engaged over a lens assembly of an optical projector. The lens cap, as described herein, is adapted for vignetting a light pattern projected by the optical projector. The lens cap includes a front surface and a back surface, where on at least a portion of the front surface, an elliptically shaped aperture is defined. In this aspect, the elliptically shaped aperture is chamfered towards its peripheral ends, as the elliptically shaped aperture extends out from the back surface of the lens cap towards the front surface of lens cap. Also, the elliptically shaped aperture is defined on the lens cap such that, a center axis of the aperture is offset to a central axis of the lens cap, so as to match an offset at which the light pattern is projected by the optical projector.
Abstract: Systems and methods for controlling the recording, storing and transmitting of video content captured by security cameras in order to drastically reduce the overall bandwidth required to remotely monitor a physical space. More specifically, embodiments of the present invention relate to a method of triggering or activating a video camera to record and/or transmit images of a physical environment over a network only when measurements taken by a separate structural sensor camera or depth-sensing device indicate that sufficient physical changes have occurred in the environment to warrant video recording.
Abstract: A light source system includes an excitation light source, a fluorescent plate that emits fluorescence when exposed to the excitation light from the excitation light source, and a compartment storing the fluorescent plate. The compartment has a heat-receiving section and a heat-dissipation section thermally connected to each other. The heat-receiving section is located opposite a fluorescence light output side of the fluorescent plate, in the compartment. The heat-dissipation section is outside the compartment.
Abstract: A video encoding method eliminates the need for back channel feedback by using long-term reference frames for recovering data transmission errors. A videoconferencing endpoint captures image data and designates a first frame as a long term reference (LTR) frame. Subsequent intra frames us the LTR frame for reference. When a new LTR frame is designated, subsequent frames use the newly designated LTR frame for reference only after it is determined that the newly designated LTR frame is fully operational to serve in that role.
Abstract: A method of projecting digital information on a real object in a real environment includes the steps of projecting digital information on a real object or part of a real object with a visible light projector, capturing at least one image of the real object with the projected digital information using a camera, providing a depth sensor registered with the camera, the depth sensor capturing depth data of the real object or part of the real object, and calculating a spatial transformation between the visible light projector and the real object based on the at least one image and the depth data. The invention is also concerned with a corresponding system.
December 28, 2012
Date of Patent:
October 27, 2020
Peter Meier, Mohamed Selim Ben Himane, Daniel Kurz
Abstract: An optical projection screen and a management system thereof are provided. The optical projection screen comprises an LED display module, a cooling module and an optical projection curtain. The optical projection curtain adheres to the LED display module with optical UV glue and is disposed on the light-emitting side of the LED display module. The cooling module is disposed on the backlight side of the LED display module and comprises a plurality of cooling assemblies distributed in different areas and used for cooling different areas of the LED display module. Each cooling assembly comprises a semiconductor refrigeration module, a temperature sensor and an intelligent switch. The intelligent switches control on-off of the semiconductor refrigeration modules according to the temperature detected by the temperature sensors. Multiple modules can be spliced to achieve large-screen display.
Abstract: There is provided an information processing apparatus and method, and a projection imaging apparatus and an information processing method capable of suppressing an increase in processing amount of processing related to update of correction information used for geometric correction and the like, the information processing apparatus detecting, in regard to projection imaging apparatuses each having a projection unit that projects an image on a projection surface and an imaging unit that images the projection surface, a corresponding point between a pixel of the projection unit and a pixel of the imaging unit for a relation between one of the projection imaging apparatuses whose posture has changed and one of the projection imaging apparatuses whose posture has not changed, and estimating a relative posture of the projection imaging apparatus whose posture has changed with respect to the projection imaging apparatus whose posture has not changed.
Abstract: A phosphor plate includes: a plate substrate, a reflection coating provided on a surface of the plate substrate, a reflecting layer provided on the reflection coating, and composed of metallic oxide and transparent binder, and a phosphor layer provided on the reflecting layer. The reflecting layer has a thickness ranging from 10 ?m to 90 ?m inclusive, and the metallic oxide is contained in the reflecting layer at a volume density ranging from 15 vol % to 40 vol %.
Abstract: According to a control device of the present invention, there is provided a center server including a display processing unit that performs control so as to display a panorama image display area in which a panorama image captured with a camera terminal device is displayed and an enlarged image display area in which an enlarged image is displayed, the enlarged image being obtained by enlarging an area corresponding to a position specified on the panorama image, and a control unit that performs control so as to capture with the camera terminal device an image of the area corresponding to the position specified on the panorama image. The display processing unit displays on the enlarged image display area the image captured with the camera terminal device in accordance with control by the control unit, and the panorama image is a circular panorama image.
Abstract: Different adapters and applications may publish information on the messaging bus and retrieve information from the bus simultaneously in a manner that does not cause interference or problems in the publication or retrieval. Meter data is cleaned, validated and estimated by separate applications using the above-described application and retrieval processes via the message bus for flexible and efficient processing.
August 28, 2007
Date of Patent:
October 6, 2020
Siemens Industry, Inc.
Cree Adams Edwards, Larsh Maur Johnson, Christopher Slaboszewicz King, Narendra Prasad, John Olson Wambaugh, Thomas David Lofgren
Abstract: A light source module includes a filter wheel, a composite light source, and a third light source. The filter is rotatable with respect to a pivot and includes a first color filter area, a second color filter area, and a light transmitting area. The composite light source emits a composite light consisting of a first and second color lights.
Abstract: A projector configured to be embedded into a portable device and to project an image towards a surface reflecting light towards an eye of a user, the projector including: a linear array of light sources emitting a light beam, the linear array of light sources emitting at least a first wavelength and extending in a first direction; a scanner configured to move the light beam on a second direction transverse to the first direction to display the image; a controller controlling the scanner and the light sources of the linear array.
Abstract: A projector and its illumination system and wavelength conversion device are provided. The wavelength conversion device includes a substrate, a wavelength converting portion, and a wavelength maintaining portion. The substrate has a rotation axis. The wavelength converting portion surrounds the rotation axis and is adapted to receive the first beam and convert a first portion of the first beam into a second beam. The wavelength maintaining portion surrounds the rotation axis and is adapted to receive the first beam and guide a second portion of the first beam. A ratio of the first portion of the first beam with respect to the first beam is greater than a ratio of the second portion of the first beam with respect to the first beam. The illumination system and the wavelength conversion device in the projector reduce the number of optical elements, thereby reducing the cost and the size of the projector.
Abstract: Methods, systems, and apparatus, including computer programs encoded on a storage device, for preventing false alarms due to display images. In one aspect, a monitoring system is disclosed that includes a processor and a computer storage media storing instructions that, when executed by the processor, cause the processor to perform operations. The operations can include obtaining, by the monitoring system, image data that depicts a portion of a property, determining, by the monitoring system, that the image data depicts an object, based on determining, by the monitoring system, that the image data depicts an object, determining, by the monitoring system, whether the depicted object is located within an exclusionary region of the property, and based on determining, by the monitoring system, that the depicted object is not located within an exclusionary region of the property, triggering, by the monitoring system, an event based on the image data.
Abstract: A projection-type video display apparatus includes: light sources, an illumination optical system, a display element, and a projection optical system. The illumination optical system includes: a mirror that reflects the illumination light toward the display element; a lens that is placed between the mirror and the display element on an optical path of the illumination light; a mirror angle adjustment mechanism that adjusts an angle of the mirror; a light-shielding plate that blocks unwanted light which is a portion of the illumination light reflected off the mirror toward the display element via the lens; and a light-shielding plate movable mechanism that is able to move the light-shielding plate between a first position to block the unwanted light and a second position to permit the unwanted light to illuminate the display element.
Abstract: A virtual-image forming device includes a device body having an opening; a real-image forming unit disposed within the device body to output light; a mirror to reflect the light output from the real-image forming unit; and an optical element. The optical element has positive power to refract the light reflected by the mirror and let the light exit through the opening to form of the light on a transmission and reflection member.