Image display with movable magnification
First Claim
1. A method of displaying an image on a monitor, said image being defined by digital data representing the colour content of pixels of said image, said method comprising:
- (1) causing said monitor to display said image under the control of said digital data;
(2) moving an image area selecting outline through ones of a plurality of positions on said displayed image, the size of said outline being smaller than said displayed image;
(3) determining, for each position of said outline, subsidiary digital data defining a portion of said image within said outline after magnification and corresponding to said position; and
(4) causing said monitor to display said magnified portion within said outline, pixels of the originally displayed image within the remaining portion of said outline being suppressed, such that said magnified portion substantially fills said outline, while the remainder of said image outside said outline is displayed unchanged.
3 Assignments
0 Petitions
Accused Products
Abstract
Apparatus for displaying an image defined by digital data representing the color content of the pixels of the image comprises a monitor; a first store for storing digital data representing an image at low resolution and a second store for storing digital data representing a magnified portion of the image at high resolution. A microcomputer is connected to the stores and to the monitor and an indicator assembly is acutable by an operator to select an area of an image displayed by the monitor. The microcomputer is responsive to a "magnify" signal from the indicator assembly to cause the monitor to display a portion of the selected after magnification, the portion being displayed within the selected area. The microcomputer suppresses pixels of the orginally displayed image within the remaining portion of the selected area, the degree of magnification being such that the magnified portion substantially fills the selected area.
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Citations
7 Claims
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1. A method of displaying an image on a monitor, said image being defined by digital data representing the colour content of pixels of said image, said method comprising:
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(1) causing said monitor to display said image under the control of said digital data; (2) moving an image area selecting outline through ones of a plurality of positions on said displayed image, the size of said outline being smaller than said displayed image; (3) determining, for each position of said outline, subsidiary digital data defining a portion of said image within said outline after magnification and corresponding to said position; and (4) causing said monitor to display said magnified portion within said outline, pixels of the originally displayed image within the remaining portion of said outline being suppressed, such that said magnified portion substantially fills said outline, while the remainder of said image outside said outline is displayed unchanged. - View Dependent Claims (2)
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3. Apparatus for displaying an image defined by digital data representing the colour content of pixels of said image, said apparatus comprising a monitor;
- a memory for storing digital data corresponding to an image displayed on said monitor;
control means connected to said memory and said monitor; and
an indicator assembly actuable by an operator to move an image area selecting outline across an image displayed by said monitor, the size of said outline being smaller than said displayed image, said control means causing, at each position of said outline, said monitor to display a portion of said image within said outline after magnification and corresponding to said position, said portion being displayed within said outline, and to suppress pixels of the originally displayed image within the remaining portion of said outline, such that said magnified portion substantially fills said outline while the remainder of said image outside said outline is displayed unchanged. - View Dependent Claims (4, 5, 6, 7)
- a memory for storing digital data corresponding to an image displayed on said monitor;
Specification