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US 6,295,065 B1Granted
Method and apparatus to alternate stereoscopic images in a video display device
AssigneeTetratel Systems Limited
InventorKenneth J. Tettington
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AssigneeTetratel Systems Limited
InventorKenneth J. Tettington
Estimating the term…
A method for displaying a stereoscopic image on a computer monitor includes the use of a composite stereoscopic image where one of the left or right eye images is displayed on every odd-numbered horizontal scan line while the other image is displayed on every even-numbered horizontal scan line. In a first vertical scan, the odd-numbered horizontal scan lines are cancelled so that only the image displayed by the even-numbered lines visible. In a second vertical scan, the even-numbered horizontal scan lines are cancelled so that only the image displayed by the odd-numbered horizontal scan lines is visible. The first and second image states are alternately displayed with every vertical refresh cycle. LCD glasses which alternately block the left eye or the right eye are synchronized to the alternation of the first and second image states, such that the left eye sees only the left eye image and the right eye sees only the right eye image, resulting in the user perceiving a stereoscopic image. The invention also relates to an apparatus for causing a computer monitor to display only odd-numbered horizontal scan lines during a first image state and only even-numbered horizontal scan lines during a second image state, such that the first and second image states alternate with every vertical refresh cycles. The apparatus includes means for synchronizing the alternation of the first and second image states with LCD glasses which selectively block the left eye or right eye vision of a user.
An apparatus for use with a computer system having a non-interlaced display device and generating a periodic vertical retrace signal, wherein each vertical retrace signal coincides with the start of a vertical refresh cycle comprising a plurality of horizontal display lines, a periodic horizontal retrace signal, wherein each horizontal retrace signal coincides with the start of a horizontal line, and at least one color signal, said apparatus comprising:
An apparatus for use with a non-interlaced computer monitor and a computer system generating a periodic vertical retrace signal, a periodic horizontal retrace signal and a composite stereoscopic image signal comprising a stereo pair of images drawn by a plurality of horizontal display lines, wherein one stereo image is displayed by the odd-numbered horizontal lines and the other stere o image is displayed by the even-numbered horizontal lines, said apparatus comprising:
A method of displaying a stereoscopic image on a display device driven by a computer system comprising the steps of:
Dependencies are inferred from the claim text.