Zooming protection display control system and method of using same
First Claim
Patent Images
1. A display method for use with a display device having a display resolution size and at least one video signal source for generating video signals indicative of a video image having a video resolution size, comprising:
- providing a timing signal;
storing temporarily the video signals indicative of the video image according to said timing signal;
adjusting the video signals in response to said timing signal to scale the video image in one dimension only for storing the adjusted video signals as stored image information indicative of a stored image having a stored image resolution size;
retrieving said stored image information;
adjusting continuously the retrieved stored image information to cause said adjusted stored image information to be indicative of a scaled image having a scaled resolution size which is about equal to the display resolution size in said one dimension and another dimension for displaying said scaled image on the display device;
said adjusting includes selectively repeating certain ones of the retrieved stored image information indicative of certain ones of the rows or columns of pixel information for the stored image to further scale up said stored image resolution size continuously in said one dimension;
said adjusting further includes selectively eliminating certain other ones of the retrieved stored image information indicative of certain other ones of the rows or columns of pixel information for the stored image to help scale down said stored image resolution size continuously in said another dimension; and
whereby said stored image resolution size is substantially simultaneously scaled up in said one dimension and scaled down in said another dimension to enable said video image to be enlarged for display on the display device.
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Abstract
A logic arrangement for causing a display image of a given resolution to be displayed in an adjusted size to accommodate a projection display system, which, in turn, can project the adjusted image. The system also enables an image to be zoomed in size prior to projecting it.
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Citations
28 Claims
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1. A display method for use with a display device having a display resolution size and at least one video signal source for generating video signals indicative of a video image having a video resolution size, comprising:
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providing a timing signal; storing temporarily the video signals indicative of the video image according to said timing signal; adjusting the video signals in response to said timing signal to scale the video image in one dimension only for storing the adjusted video signals as stored image information indicative of a stored image having a stored image resolution size; retrieving said stored image information; adjusting continuously the retrieved stored image information to cause said adjusted stored image information to be indicative of a scaled image having a scaled resolution size which is about equal to the display resolution size in said one dimension and another dimension for displaying said scaled image on the display device; said adjusting includes selectively repeating certain ones of the retrieved stored image information indicative of certain ones of the rows or columns of pixel information for the stored image to further scale up said stored image resolution size continuously in said one dimension; said adjusting further includes selectively eliminating certain other ones of the retrieved stored image information indicative of certain other ones of the rows or columns of pixel information for the stored image to help scale down said stored image resolution size continuously in said another dimension; and whereby said stored image resolution size is substantially simultaneously scaled up in said one dimension and scaled down in said another dimension to enable said video image to be enlarged for display on the display device. - View Dependent Claims (2, 3)
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4. A display system for use with a display device having a display resolution size and at least one video signal source for generating video signals indicative of a video image having a video resolution size, comprising:
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means for providing a timing signal; means for storing temporarily the video signals indicative of the video image according to said timing signal; sampling means for adjusting the video signals in response to said timing signal to scale the video image in one dimension only for storing the adjusted video signals as stored image information indicative of a stored image having a stored image resolution size; means for retrieving said stored image information; logic means for adjusting continuously the retrieved stored image information to cause said adjusted stored image information to be indicative of a scaled image having a scaled resolution size which is about equal to the display resolution size in said one dimension and another dimension for displaying said scaled image on the display device; said logic means includes means for selectively repeating certain ones of the retrieved stored image information indicative of certain ones of the rows or columns of pixel information for the stored image to further scale up said stored image resolution size continuously in said one dimension; said logic means further includes means for selectively eliminating certain other ones of the retrieved stored image information indicative of certain other ones of the rows or columns of pixel information for the stored image to help scale down said stored image resolution size continuously in said another dimension; and whereby said stored image resolution size is substantially simultaneously scaled up in said one dimension and scaled down in said another dimension to enable said video image to be enlarged for display on the display device. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A control system for adjusting the initial size of an image defined by columns and rows to be displayed, comprising:
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command means generating a scale command for causing the image to be scaled to a desired size substantially larger than the initial size; sampling means responsive to said scale command for increasing the image in one dimension only by greatly increasing the number of the initial image columns to provide an initial adjustment of the size of the image to an intermediate size substantially larger than said desired size in said one dimension only; storage means responsive to the initially adjusted image for storing it temporarily; control means responsive to the stored initially adjusted image for decreasing the number of the intermediate image columns to be displayed to adjust further the image to said desired size in said one dimension only; and logic means for inhibiting the display of one of the intermediate image columns and enabling the display of another one of the intermediate image columns during an even frame time, and for inhibiting the display of said another one of the intermediate image columns and enabling the display of said one of the intermediate image columns during an odd frame time; wherein the display of said one intermediate image column and said another one of the intermediate image columns is averaged over said even frame time and said odd frame time to display the image at said desired size substantially without flicker. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A control system for adjusting the size of an image to be displayed, comprising:
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command means generating a scale command for causing the image to be scaled to a desired size; sampling means responsive to said scale command for scaling the image in one dimension only, to provide an initial adjustment of the size of the image in said one dimension only; said storage means responsive to the initially adjusted image for storing it temporarily; control means further responsive to the stored initially adjusted image for scaling the initially adjusted image to adjust further the image to said desired size in said one dimension only; said control means further responsive to the stored initially adjusted image for scaling the initially adjusted image in another dimension only, to adjust the image to said desired size in said another dimension; wherein said sampling means expands the image size in said one dimension; and logic means for inhibiting alternatingly the display of the initially adjusted image in said one dimension, and for alternately repeating the display of the initially adjusted image in said another dimension, over an even frame time and an odd frame time to enable the display of the initially adjusted image to be averaged over said even frame time and said odd frame time; wherein the averaged display of the initially adjusted image corresponds to said desired size and is perceived substantially without flicker. - View Dependent Claims (19)
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20. A control system for adjusting the size of an image to be displayed, comprising:
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command means generating a scale command for causing the image to be scaled to a desired size; sampling means responsive to said scale command for scaling the image in one dimension only, to provide an initial adjustment of the size of the image in said one dimension only; storage means responsive to the initially adjusted image for storing it temporarily; control means responsive to the stored initially adjusted image for further scaling the initially adjusted image to adjust further the image to said desired size in said one dimension only; said control means further responsive to the stored initially adjusted image for scaling the initially adjusted image in another dimension only, to adjust the image to said desired size in said another dimension; and wherein said control means includes column scaling means for inhibiting the display of a portion of the initially adjusted image in said one dimension during an even frame time, and for inhibiting the display of another portion of the initially adjusted image in said one dimension during an odd frame time, to enable the size of the initially adjusted image to correspond to the desired size in said one dimension during said even frame time and said odd frame time; wherein the display of said initially adjusted image is averaged over said even frame time and said odd frame time to enable the image to be displayed at said desired size substantially without flicker. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification