HANDHELD DISPLAY DEVICE FOR MAGNIFYING PRINTED INFORMATION
First Claim
1. A handheld display device for magnifying printed content on a printed substrate, said device comprising:
- an optical sensor for imaging an area of the printed substrate containing printed content and for generating image data;
a processor for determining interaction data using the image data, said interaction data identifying a page description corresponding to the printed substrate;
a transceiver for;
sending the interaction data to a computer system, thereby causing the computer system to identify the page description and retrieve display data corresponding to at least some of the printed content using the identified page description; and
receiving the display data from the computer system; and
a touch-sensitive display screen for displaying display information based on said display data, said display information including displayed content corresponding to at least some of the printed content,wherein said device is configured such that user interaction with the displayed content via said touch-sensitive display screen causes the displayed content to be magnified on said screen.
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Accused Products
Abstract
A method of magnifying printed content using a handheld display device having a touch-sensitive screen and a transceiver for sending and receiving digital information. The method comprises the steps of: imaging an area of the substrate containing printed content and generating image data using an optical sensor; determining interaction data using the image data, the interaction data identifying a substrate identity; retrieving, using the interaction data and the page description, display data corresponding to the printed content; displaying, on the touch-sensitive screen, display information based on the display data, the display information including displayed content corresponding to the printed content; and interacting with the displayed content via the touch-sensitive screen. Interacting with the displayed content via the touch-sensitive screen magnifies the displayed content on the screen.
31 Citations
16 Claims
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1. A handheld display device for magnifying printed content on a printed substrate, said device comprising:
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an optical sensor for imaging an area of the printed substrate containing printed content and for generating image data; a processor for determining interaction data using the image data, said interaction data identifying a page description corresponding to the printed substrate; a transceiver for; sending the interaction data to a computer system, thereby causing the computer system to identify the page description and retrieve display data corresponding to at least some of the printed content using the identified page description; and receiving the display data from the computer system; and a touch-sensitive display screen for displaying display information based on said display data, said display information including displayed content corresponding to at least some of the printed content, wherein said device is configured such that user interaction with the displayed content via said touch-sensitive display screen causes the displayed content to be magnified on said screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification