Apparatus for controlling the scrolling rate of a video display
First Claim
1. Apparatus for controlling the vertical scrolling rate and direction of full-screen images of video image data comprising:
- video display means for displaying a full-screen video image;
memory means for storing said video image data to be displayed on said display means at a plurality of addresses therein;
address signal generation means for generating an address signal supplied to said memory means for designating a succession of addresses within said memory means at which selected video image data is stored for vertical scrolling display of a full-screen image on said video display means, said succession of addresses being generated at a variable rate and sequential direction in response to an address renewal rate signal;
a rotatable control element for producing an angular rotational displacement signal representing vertical scrolling rate and sequential direction;
control means receiving said signal from said rotatable control element for producing said address renewal rate and direction signal therefrom; and
means for reading said selected image data designated by said address signal from said memory means and supplying said selected image data to said display means for vertical scrolling display of a full-screen image thereon;
whereby the rate and sequential direction at which said full-screen images are vertically scrolled on said video display means is dependent upon said angular rotational displacement of said rotatable control element.
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Accused Products
Abstract
An apparatus for displaying a data stored in a memory on a display panel, such as a cathode ray tube in a scroll mode in which the data is scrolled on the display panel at a rate dependent on a renewal speed of a read out address of the memory, and is provided with manually rotatable dial means for generating a control signal for controlling the renewal speed of the read out address of the memory and therefore the scroll speed of the data, the control signal being dependent on the rotation of the manually rotatable dial, that is, rotational angle or rotational speed of the dial. Further, in an editing apparatus to which this invention is applied, the manually rotatable dial concurrently controls the tape transport speed of the video tape recorders, the video signals reproduced from the video tape recorders being edited.
28 Citations
8 Claims
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1. Apparatus for controlling the vertical scrolling rate and direction of full-screen images of video image data comprising:
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video display means for displaying a full-screen video image; memory means for storing said video image data to be displayed on said display means at a plurality of addresses therein; address signal generation means for generating an address signal supplied to said memory means for designating a succession of addresses within said memory means at which selected video image data is stored for vertical scrolling display of a full-screen image on said video display means, said succession of addresses being generated at a variable rate and sequential direction in response to an address renewal rate signal; a rotatable control element for producing an angular rotational displacement signal representing vertical scrolling rate and sequential direction; control means receiving said signal from said rotatable control element for producing said address renewal rate and direction signal therefrom; and means for reading said selected image data designated by said address signal from said memory means and supplying said selected image data to said display means for vertical scrolling display of a full-screen image thereon; whereby the rate and sequential direction at which said full-screen images are vertically scrolled on said video display means is dependent upon said angular rotational displacement of said rotatable control element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification