Method and system for overlaying space-constrained display with a reference pattern during document scrolling operations
First Claim
Patent Images
1. A method for displaying a document in a viewport display area of a display screen, the viewport being smaller than the document,) the method comprising:
- displaying on the display screen a first portion of the document in the viewport;
in a processor connected for driving the display screen, while the first portion of the document is displayed in the viewport, receiving a user command to initiate a scrolling operation on the document to display a second portion of the document within the viewport;
in response to receiving the user command to initiate the scrolling operation, displaying a scrolling reference pattern superimposed on the first portion of the document;
performing the scrolling operation to display the second portion of the document within the viewport;
and during the scrolling operation, displaying the scrolling reference pattern in a constant position with reference to the document, whereby the scrolling reference pattern moves with the documentwherein the scrolling operation is in a direction of scrolling, and the scrolling reference pattern contains only lines in the direction of scrolling.
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Abstract
A reading aid is provided for large documents or images on space-constrained touch-sensitive screens of devices, such as mobile phones and personal digital assistants (PDAs). A visual scrolling reference pattern such as a grid is projected over a document during scrolling operations on a touch screen. The scrolling reference pattern correlates information presented in different parts of large documents that are not visible at the same time.
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Citations
21 Claims
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1. A method for displaying a document in a viewport display area of a display screen, the viewport being smaller than the document,) the method comprising:
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displaying on the display screen a first portion of the document in the viewport; in a processor connected for driving the display screen, while the first portion of the document is displayed in the viewport, receiving a user command to initiate a scrolling operation on the document to display a second portion of the document within the viewport; in response to receiving the user command to initiate the scrolling operation, displaying a scrolling reference pattern superimposed on the first portion of the document; performing the scrolling operation to display the second portion of the document within the viewport; and during the scrolling operation, displaying the scrolling reference pattern in a constant position with reference to the document, whereby the scrolling reference pattern moves with the document wherein the scrolling operation is in a direction of scrolling, and the scrolling reference pattern contains only lines in the direction of scrolling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19)
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10. A non-transitory computer-usable medium having computer readable instructions stored thereon for execution by a processor to perform a method for displaying a document in a viewport display area of a display screen, the viewport being smaller than the document, the method comprising:
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displaying on the display screen a first portion of the document in the viewport; in a processor connected for driving the display screen, while the first portion of the document is displayed in the viewport, receiving a user command to initiate a scrolling operation on the document to display a second portion of the document within the viewport; in response to receiving the user command to initiate the scrolling operation, displaying a scrolling reference pattern superimposed on the first portion of the document; performing the scrolling operation to display the second portion of the document within the viewport; and during the scrolling operation, displaying the scrolling reference pattern in a constant position with reference to the document, whereby the scrolling reference pattern moves with the document wherein the scrolling operation is in a direction of scrolling, and the scrolling reference pattern contains only lines in the direction of scrolling. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 20)
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21. A method for displaying a document in a viewport display area of a display screen, the viewport being smaller than the document, the method comprising:
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displaying on the display screen a first portion of the document in the viewport; in a processor connected for driving the display screen, while the first portion of the document is displayed in the viewport, receiving a first user command to initiate a substantially horizontal scrolling operation on the document to display a second portion of the document within the viewport; in response to receiving the user command to initiate the substantially horizontal scrolling operation, displaying a first scrolling reference pattern comprising only horizontal lines superimposed on the first portion of the document; performing the scrolling operation to display the second portion of the document within the viewport; during the scrolling operation, displaying the first scrolling reference pattern in a constant position with reference to the document, whereby the first scrolling reference pattern moves with the document; removing the first scrolling reference pattern from the viewport; receiving a second user command to initiate a substantially vertical scrolling operation on the document to display a third portion of the document within the viewport; in response to receiving the user command to initiate the substantially vertical scrolling operation, displaying a second scrolling reference pattern comprising only vertical lines superimposed on the document; performing the scrolling operation to display the third portion of the document within the viewport; and during the scrolling operation, displaying the second scrolling reference pattern in a constant position with reference to the document, whereby the second scrolling reference pattern moves with the document.
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Specification