Low vision video magnifier
First Claim
1. A low vision viewing apparatus that displays an image of an object, said apparatus comprising:
- a camera, including a lens to define an image plane and an electronic image sensor located at the image plane for capturing a visual field providing an output set of pixels representative of said visual field depending on input as to specific pixels or ranges thereof;
a display means configured to provide a representation of a window of interest;
an electronic processing means controlled by a program, connected intermediate of said display means and said camera, which defines said visual field as a set of pixels and a subset of said set of pixels as said window-of-interest; and
a steering means to select said subset of pixels on said visual field which constitutes the window-of-interest, wherein said processing means selectively acquiring said subset of said set of pixels from said camera depending on user input from said steering means and pre-programmed instructions.
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Accused Products
Abstract
A low-vision viewer magnifies the face-up source material in the visual field of a camera and displays the magnified image on a VDU or other display means. In a static mode, the camera captures and stores a high-resolution image of the source material. This high-resolution image can be manipulated and subsequently displayed on the VDU. In a live mode, the camera captures a low resolution image of the source material or a high resolution image of a section of the source material to provide a high frame rate for full motion video. In the live capture mode, the low-vision user can move their view around the source material and zoom in on a desired section of interest. The same camera is used in either static or live modes.
62 Citations
40 Claims
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1. A low vision viewing apparatus that displays an image of an object, said apparatus comprising:
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a camera, including a lens to define an image plane and an electronic image sensor located at the image plane for capturing a visual field providing an output set of pixels representative of said visual field depending on input as to specific pixels or ranges thereof;
a display means configured to provide a representation of a window of interest;
an electronic processing means controlled by a program, connected intermediate of said display means and said camera, which defines said visual field as a set of pixels and a subset of said set of pixels as said window-of-interest; and
a steering means to select said subset of pixels on said visual field which constitutes the window-of-interest, wherein said processing means selectively acquiring said subset of said set of pixels from said camera depending on user input from said steering means and pre-programmed instructions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A low vision viewing apparatus that magnifies and displays an image of an object on a display means, said apparatus incorporating a controller for electronically processing said image, said electronic processing modes including:
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a live video capture and image display of said magnified image; and
a static image capture and image display of said magnified image. - View Dependent Claims (35, 36, 37, 38, 39)
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40. (canceled)
Specification