An illumination system for an endoscopic camera has a plurality of light emitting diodes mounted to a substrate The substrate is adapted for attachment at the distal end of the endoscope Each LED is contained within a reflector cup which directs the angular dispersion of emitted light toward the object to be viewed

LED illumination system for endoscopic cameras

A method of determining implied sample areas for each data point of each color in a source pixel data specified in a first sub-pixel format is used for sub-pixel rendering an image on a display specified in a second sub-pixel format. Each of the first and second sub-pixel formats comprises a plurality of colored sub-pixels. The method comprises determining a geometric center of each colored sub-pixel of the first format to define a sampling point; and defining each implied sample area by forming lines that are substantially equidistant between the sampling point of one colored sub-pixel and the sampling point of another neighboring same color colored sub-pixel. A similar technique may be used for determining resample areas for computing color values for rendering an image specified in a first sub-pixel format on a display substantially comprising a plurality of colored sub-pixels arranged in a second sub-pixel format.

Conversion of a sub-pixel format data to another sub-pixel data format

Processing data for a display including pixels, each pixel having color sub-pixels, comprises receiving pixel data. Once the pixel data is received, processing data for a display includes converting the pixel data to sub-pixel rendered data, the conversion generating the sub-pixel rendered data for a sub-pixel arrangement including alternating red and green sub-pixels on at least one of a horizontal and vertical axis. Next processing data for a display includes correcting the sub-pixel rendered data if a condition exists and outputting the sub-pixel rendered data.

Methods and Systems for Sub-Pixel Rendering with Adaptive Filtering

An image input device (10) is provided in which an optical deflector (32) is positioned to divide the image of an object into a plurality of sub-images and to deflect the sub-images to an image sensor via an imaging lens (20). The images sensed by the image sensor are stored in a memory (90) and combined by an image processor (70) to form a composite image of the object. The optical deflector may have a plurality of optical elements (35), the number of which may be the same as the number of sub-images.

Image input device having optical deflection elements for capturing multiple sub-images

An array and row and column line architecture for a display is disclosed. The array consists of a plurality of row and column positions and a plurality of three-color pixel elements. A three-color pixel element can comprise a blue emitter, a pair of red emitters, and a pair of green emitters. Several designs for the three-color pixel element are contemplated. The drive matrix consists of a plurality of row and column drivers to drive the individual emitters. The row drivers drive the red, green and blue emitters in each row. The red and green emitters in each column are driven by a single column driver. However, a single column driver can drive two column lines of blue emitters, a first column line and a second column line of the next nearest neighboring three-color pixel element. Methods of driving a three-color pixel element are also disclosed.

Arrangement of color pixels for full color imaging devices with simplified addressing

The system of the present invention increases the resolution (number of picture elements or pixels) of an image that may be formed from an image sensor without increasing the resolution of the sensor. The system operates upon a color image beam using a set of primary color filters (14), including at least two filters of the same color, with at least one of the filters being capable of displacing the color image beam by a distance equal to a fraction of the distance between adjacent photosensitive elements which form the image sensor. The color wheel (12) is rotated to sequentially place each filter of the set of primary filters into the color image beam. The array of photosensitive elements (22) forming the image sensor is positioned to receive the colored image beam which passes through each filter. Each photosensitive element produces signals indicative of the intensity of the color image beam components incident thereon. The signals produced by the photosensitive elements of the image sensor are stored for each filter positioned in the path of the color image beam. A composite image signal is formed from the stored signals by combining the signals such that the filter displaced pixels are interleaved with the non-displaced pixels. The resultant image therefore has a greater number of pixels, or higher resolution, than the image sensor.

A color sequential optical offset image sampling system

A method is described for rapidly changing digital content for a digital cinema house. The method includes assigning the digital content to a first server for transmitting to a first projector in a cinema house; and deciding to change an assigned playback location of the digital content to a second projector. Next, actually changing the assigned playback location of the digital content to a second projector; and switching the assigned playback of the digital content directly from the first server to the second projector.

Method for rapidly changing digital content for a digital cinema house

An illumination system for a film scanner is disclosed which comprises a light source (14) and optics for providing a line of light on a film (44). Light transmitted through the film is imaged onto photosensor elements such as CCD arrays (50, 52). In order to obtain a high quality electronic image, a xenon light source is used, color filters (26, 28, 30-32) are included in the system to control the spectral content of the light provided to the film gate, and an integrating cylinder (34) is used to provide a line of diffuse light on the film (44).

Illumination system for a film scanner

A telecine scanner is selectively conformed to evaluate the dye densities characteristic of either negative or print film. The film (10) is interposed in a light path (12) between a light source (14) and a pickup stage (16) that develops a plurality of color output signals from the light passing through the film. Color channel filters (38, 40, 42) included in the pickup stage have spectral passbands in the respective colors that are broad enough to include the spectral dye densities of both negative and print materials. The scanner sensitivity is further limited to a particular film material by inserting an appropriate shaping filter set (44, 45) into the light path, preferably between the light source and the film, for conforming the peak sensitivity of at least one of the passbands to the peak spectral density of the corresponding dye of the particular film material.

Telecine scanning apparatus with spectrally-shifted sensitivities responsive to negative or print film dyes

The present image sensor mounting system is particularly adapted to the mounting of a linear sensor array, of the type having a transparent window on a front surface and a thermal and electrically conductive back surface. The system provides superior electrical and thermal transfer characteristics. A heat sink having at least one flat surface is positioned to make thermal contact with the back surface of the image sensor. A multilayer circuit board having layers of conductive material separated by layers of insulating material and having an opening therethrough sufficient in size to accept the heat sink provides the system support. A metal plating extends from one surface of the board through the opening in the board to the opposite surface of the board with selected ones of the layers of conductive material making electrical contact with the metal plating. The heat sink is mounting in the multilayer circuit board opening in thermal and electrical contact with the metal plating. A layer of thermal and electrically conductive grease is layered between the at least one surface of the heat sink and the conductive back surface of the linear sensor array.

Leslie Moore

Papers

A color sequential optical offset image sampling system

Method for rapidly changing digital content for a digital cinema house

Illumination system for a film scanner

Telecine scanning apparatus with spectrally-shifted sensitivities responsive to negative or print film dyes

High-speed ccd sensor mounting system with improved signal to noise operation and thermal contact.