Apparatus and Method for Interpolating the Intensities of Scanned Pixels from Source Pixels
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Abstract
A scan assembly of an image generator sweeps an image beam in a first dimension at a first rate and bi-directionally in a second dimension at a slower rate. Sweeping the beam bi-directionally in the vertical dimension (generally the dimension of the lower sweep rate) can reduce the scanning power by eliminating the flyback period, and, where the scan assembly includes a mechanical reflector, can reduce the error in the beam position without a feedback loop by reducing the number of harmonics in the vertical sweep function. Furthermore, because the image beam is “on” longer due to the elimination of the flyback period, the scanned image is often brighter for a given beam intensity. The scan assembly may also sweep the image beam non-linearly in the vertical dimension, and this sweep may be bi-directional or uni-directional. Sweeping the beam non-linearly can also reduce the error in the beam position by reducing the number of harmonics in the vertical sweep function.
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Citations
93 Claims
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1-71. -71. (canceled)
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72. An image generator, comprising:
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a scan assembly operable to scan an image by sweeping an image beam in a first dimension and non-linearly in a second dimension, the image beam having an intensity and operable to generate scanned pixels of the scanned image; a clock generator operable to generate a pixel clock; and a beam generator coupled to the clock generator and, in response to each cycle of the pixel clock, operable to interpolate a respective scanned pixel of the scanned image by interpolating the intensity of the image beam from a respective original pixel of an original image upon which the scanned image is based. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83)
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84. A method, comprising:
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generating pixels of a scanned image by sweeping an image beam in a first dimension and non-linearly in a second dimension; and interpolating an intensity of the image beam for each scanned pixel from a respective original pixel of an original image upon which the scanned image is based. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92, 93)
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Specification