Windowing systems
First Claim
Patent Images
1. A method of drawing in a window, the method comprising providing a first mode in which a signal is sent to a client of an affected window after the completion of every specific number of more than one drawing operation instructing the client of the affected window to redraw at least part of the affected window, and providing a second mode in which the sending of a signal is suppressed.
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Accused Products
Abstract
A method of displaying a window on a screen is described, in which the window has a background through which underlying objects are visible. Also described are methods of managing windows when drawing takes place in a window which lies under such a window.
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Citations
31 Claims
- 1. A method of drawing in a window, the method comprising providing a first mode in which a signal is sent to a client of an affected window after the completion of every specific number of more than one drawing operation instructing the client of the affected window to redraw at least part of the affected window, and providing a second mode in which the sending of a signal is suppressed.
- 11. A receiver/decoder comprising means for drawing in a window, in first and second modes, wherein in the first mode a signal is sent to a client of an affected window after the completion of every specific number of more than one drawing operation instructing the client of the affected window to redraw at least part of that window, and in the second mode the sending of a signal is suppressed.
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17. A method of displaying a window on a screen, wherein the window has a background through which underlying objects are visible, the method comprising:
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determining whether an area underlying the window has changed and, if so, redrawing at least one part of the window, after receiving a signal instructing a client of the window to redraw the at least one part of the window, the method being carried out by a receiver/decoder, the receiver/decoder being for use with a television set; identifying an area of the window affected by the change in the area underlying said window; identifying foreground objects in the affected area; and redrawing at least one part of the foreground objects in the affected area after receiving a signal instructing the client of the window to redraw at least part of the affected window. - View Dependent Claims (18, 19, 20, 21)
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22. A method of displaying a window on a screen, wherein the window has foreground objects and a background through which underlying objects are visible, the method including:
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determining that an area underlying the window has changed, identifying an area of the window affected by the change, identifying foreground objects in the affected area, and redrawing at least the part of the foreground objects in the affected area after receiving a signal instructing a client of the window which may be affected to redraw at least part of that window, the method being carried out by a receiver/decoder, the receiver/decoder being for use with a television set. - View Dependent Claims (23)
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24. A method of drawing in a window, the method comprising:
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drawing in the window and monitoring the drawing; determining a window which may be affected by the drawing; and sending a signal instructing a client of the window which may be affected to redraw at least part of that window so that drawing affecting an overlaying window can be corrected, wherein the signal is sent to the client of the affected window after the completion of every specific number of more than one drawing operation, the method being carried out by a receiver/decoder. - View Dependent Claims (25)
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26. A receiver/decoder comprising means for displaying a window on a screen, wherein the window has a background through which underlying objects are visible, further comprising:
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means for determining whether an area underlying the window has changed; means for redrawing at least part of the window, if an area underlying the window has changed, after receiving a signal instructing a client of the window which may be affected to redraw at least part of that window; the receiver/decoder being for use with a television set; means for identifying an area of the window affected by the change in the area underlying said window; means for identifying foreground objects in the affected area; and means for redrawing at least part of the foreground objects in the affected area after receiving a signal instructing a client of the window which may be affected to redraw at least part of that window. - View Dependent Claims (27, 28)
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29. A receiver/decoder comprising means for displaying a window on a screen wherein the window has foreground objects and a background through which underlying objects are visible, and further comprising:
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means for determining that an area underlying the window has changed; means for identifying an area of the window affected by the change; means for identifying foreground objects in the affected area; and means for redrawing at least the part of the foreground objects in the affected area after receiving a signal instructing a client of the window which may be affected to redraw at least part of that window.
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30. A receiver/decoder comprising means for drawing in a window, and further comprising:
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means for drawing in the window and for monitoring the drawing; means for determining a window which may be affected by the drawing, and for sending a signal instructing a client of the window which may be affected to redraw at least part of that window so that drawing affecting an overlaying window can be corrected, wherein the signal is sent following each drawing operation. - View Dependent Claims (31)
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Specification