Abstract: Methods and apparatus for utilizing pixel sub-components which form a pixel element of an LCD display, e.g., as separate luminous intensity elements, are described. Each pixel of a color LCD display is comprised of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The invention takes advantage of the ability to control individual RGB pixel sub-elements to effectively increase a screen's resolution in the dimension perpendicular to the dimension in which the screen is striped, e.g., the RGB pixel sub-elements are arranged lengthwise. In order to utilize the effective resolution which can be obtained by treating RGB pixel sub-components separately, scaling or super sampling of digital representations of fonts is performed in one dimension at a rate that is greater than the scaling or sampling performed in the other dimension. In some embodiments where weighting is used in determining RGB pixel values, e.g.

Abstract: Methods and apparatus for displaying an image by uttilizing pixel sub-components which form a pixel element of an LCD display as separate luminous intensity elements. By treating the pixel sub-components independently, increased resolution is achieved in the dimension that is perpendicular to the dimension in which the screen is striped. To take advantage of the increased resolution, the image is processed by first scaling the image data in one dimension at a rate that is greater than the scaling of the image data in another dimension. The pixel sub-components are then independently determined from different portions of the scaled image data though scan conversion, which may involve the use of different weights for each color component. Color distortions such as color fringing is compensated by treating eachi pixel sub-component independently. For horizontally flowing text, applications, screens with vertical striping are preferred.

Abstract: Color processing operations can be used to reduce color artifacts in images displayed on display devices having pixels with separately controllable pixel sub-components. Different regions of image data are mapped to the individual pixel sub-components of the pixels. In the absence of performing the color processing operations, distracting color artifacts can be generated in the displayed image as a result of the pixel sub-components being treated as independent luminous intensity sources. Color artifacts can be reduced by comparing the difference between the luminous intensity values of adjacent red and green pixel sub-components with a threshold value and adjusting the luminous intensity values so as to reduce the difference if it exceeds the threshold value. Color artifacts can also be reduced by performing a gray scaling operation on pixels having an overall luminance that is less than the luminance associated with a foreground color and also less than the luminance associated with a background color.

Abstract: Methods and apparatus are disclosed for sampling image data and mapping the samples to pixel sub-components which form a pixel element of an LCD display so that each pixel sub-component has a different portion of the image mapped thereto and at least one of the pixel sub-components has two or more samples mapped thereto. The methods can be used with conventional color LCD displays that include pixels consisting of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The separately-controllable nature of individual RGB pixel sub-components is used to effectively increase a screen's resolution in one dimension. A scan conversion process maps samples of the image data to individual pixel sub-components, including mapping two or more samples to at least one of the pixel sub-component. As a result, each of the pixel sub-components represents a different portion of the image.

Abstract: Methods and apparatus are described for sampling image data that includes foreground/background color information and mapping the samples to pixel sub-components which form a pixel element of an LCD display so that each pixel sub-component has a different portion of the image mapped thereto. The methods can be used with conventional color LCD displays that include pixels consisting of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The separately-controllable nature of individual RGB pixel sub-components is used to effectively increase a screen's resolution in the dimension perpendicular to the dimension in which the screen is striped. A scan conversion process maps samples of the image data to individual pixel sub-components, resulting in each of the pixel sub-components representing a different portion of the image.

Abstract: Methods and apparatus for sampling image data and mapping the samples to pixel sub-components which form a pixel element of an LCD display so that each pixel sub-component has a different portion of the image mapped thereto. The methods can be used with conventional color LCD displays that include pixels consisting of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The pixel sub-components can be arranged on the display device to form horizontal or vertical stripes of individual colors. The separately-controllable nature of individual RGB pixel sub-components is used to effectively increase a screen's resolution in the dimension perpendicular to the dimension in which the screen is striped. A scan conversion process maps samples of the image data to individual pixel sub-components, resulting in each of the pixel sub-components representing a different portion of the image.

Abstract: Methods and apparatus for utilizing pixel sub-components which form a pixel element of an LCD display, e.g., as separate luminous intensity elements, are described. Each pixel of a color LCD display is comprised of three non-overlapping red, green and blue rectangular pixel sub-elements or sub-components. The invention takes advantage of the ability to control individual RGB pixel sub-elements to effectively increase a screen's resolution in the dimension perpendicular to the dimension in which the screen is striped, e.g., the RGB pixel sub-elements are arranged lengthwise. In order to utilize the effective resolution which can be obtained by treating RGB pixel sub-components separately, scaling or super sampling of digital representations of fonts is performed in one dimension at a rate that is greater than the scaling or sampling performed in the other dimension. In some embodiments where weighting is used in determining RGB pixel values, e.g.

Abstract: An overhead projector for use with a flat panel display assembly. The specialized overhead projector provides cooling for the LCD flat panel when used in an overhead projection configuration. The projector contains a rail on which the flat panel display is positioned for alignment and to provide air passage there through for cooling. A clamping mechanism is also described for securing the flat panel display to the projector. The flat panel display is a back-lit flat panel display subsystem for direct viewing as a monitor and also has overhead projection capability. The display subsystem contains a removable door assembly which provides for back-lighting for direct viewing. When the door assembly is removed, the active matrix LCD is semi-transparent and can be placed over the imaging screen of the overhead projector such that the LCD color image can be thus projected.

Abstract: A power distribution system intended for use in a highly modular desk top computer system is disclosed. The invention provides a programmable modular DC power supply including a power module that produces a first fixed regulated DC voltage which is coupled from the power module to a power bus. Thereafter the first voltage is distributed to a plurality of DC-to-DC convertors, each of which is operable to change the first DC voltage to a second regulated DC voltage selected from a plurality of programmed voltage values.