Character information display apparatus for a partial and a full-screen display
First Claim
1. A character information display apparatus comprising:
- first generator means for generating a first video signal for a full-screen image including character information;
second generator means for generating a second video signal for a partial-screen image including character information;
change-over means for exchanging said first video signal for said full-screen image from said first generator means with said second video signal for said partial-screen image from said second generator means;
demodulation means for demodulating said character information extracted from one of said first video signal for said full-screen image and said second video signal for said partial-screen image output from said change-over means;
partial-screen image processing means for compressing said second video signal for said partial-screen image from said second generator means in at least one of a horizontal direction and a vertical direction;
first compositing means for compositing said first video signal for said full-screen image from said first generator means and a compressed video signal for said partial-screen image from said partial-screen image processing means to form first composite signals for a first composite image;
second compositing means for compositing said first composite signals from said first composite image and a character signal from said demodulation means to form second composite signals for a second composite image;
display means for displaying said second composite signals from said second compositing means;
controller means provided with a first key for turning ON and OFF a display of said partial-screen image and a second key for turning ON and OFF a display of the character information;
control processor means for controlling said second generator means, said change-over means and said demodulation means under control of said controller means, and further for turning ON and OFF said display of said character information corresponding to said full-screen image when said second key is pressed and said first key is OFF and said partial-screen image is not displayed, and for controlling a cyclic operation to turn ON said display of said character information corresponding to said full-screen image, to turn on said display of said character information corresponding to said partial-screen image and to turn OFF said display of said character information when said second key is pressed and said first key is ON and said partial-screen image is displayed.
1 Assignment
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Accused Products
Abstract
A display apparatus for displaying a partial-screen image within a full-screen image includes a change-over switch for exchanging the video signals for the full-screen and partial-screen displays. When only the full-screen image is displayed, character information corresponding to the full-screen image can be turned on or off. When both the full-screen image and the partial-screen image are displayed, a cyclic operation can be performed under control of a controller. The cycle includes: 1) turning on the display of character information corresponding to the full-screen image, 2) turning on the display of character information corresponding to the partial-screen image, and 3) turning off the display of character information. The display apparatus is also capable of turning on the display of character information corresponding to the full-screen image when a mute of sound is turned on and turning off the display of character information when the mute of sound is subsequently turned off.
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Citations
5 Claims
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1. A character information display apparatus comprising:
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first generator means for generating a first video signal for a full-screen image including character information; second generator means for generating a second video signal for a partial-screen image including character information; change-over means for exchanging said first video signal for said full-screen image from said first generator means with said second video signal for said partial-screen image from said second generator means; demodulation means for demodulating said character information extracted from one of said first video signal for said full-screen image and said second video signal for said partial-screen image output from said change-over means; partial-screen image processing means for compressing said second video signal for said partial-screen image from said second generator means in at least one of a horizontal direction and a vertical direction; first compositing means for compositing said first video signal for said full-screen image from said first generator means and a compressed video signal for said partial-screen image from said partial-screen image processing means to form first composite signals for a first composite image; second compositing means for compositing said first composite signals from said first composite image and a character signal from said demodulation means to form second composite signals for a second composite image; display means for displaying said second composite signals from said second compositing means; controller means provided with a first key for turning ON and OFF a display of said partial-screen image and a second key for turning ON and OFF a display of the character information; control processor means for controlling said second generator means, said change-over means and said demodulation means under control of said controller means, and further for turning ON and OFF said display of said character information corresponding to said full-screen image when said second key is pressed and said first key is OFF and said partial-screen image is not displayed, and for controlling a cyclic operation to turn ON said display of said character information corresponding to said full-screen image, to turn on said display of said character information corresponding to said partial-screen image and to turn OFF said display of said character information when said second key is pressed and said first key is ON and said partial-screen image is displayed. - View Dependent Claims (3)
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2. A character information display apparatus comprising:
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first generator means for generating a first video signal for a full-screen image including a character information; second generator means for generating a second video signal for a partial-screen image including a character information; change-over means for exchanging said first video signal for said full-screen image from said first generator means with said second video signal for said partial-screen image from said second generator means; demodulation means for demodulating said character information extracted from one of said first video signal for said full-screen image and said second video signal for said partial-screen image output from said change-over means; partial-screen image processing means for compressing said partial-screen image video signal from said second generator means in at least one of a horizontal direction and a vertical direction; first compositing means for compositing said first video signal for the full-screen image from said first generator means and a compressed video signal for said partial-screen image from said partial-screen image processing means to form first composite signals for a first composite image; second compositing means for compositing said first composite signals from said first composite image and a character signal from said demodulation means to form second composite signals for a second composite image; display means for displaying said second composite signals from said second compositing means; controller means provided with a first key for turning ON and OFF a partial-screen image display, a second key for turning ON and OFF a display of said character information, and a third key for turning ON and OFF a mute of sound; and control processor means for controlling said first generator means and said second generator means under control of said controller means, said change-over means, and said demodulation means and further for turning ON and OFF said display of said character information corresponding to said full-screen image when said second key is pressed and said first key is OFF and said partial-screen image is not displayed, and for controlling a cyclic operation to turn ON said display of said character information corresponding to said full-screen image, to turn on said display of said character information corresponding to said partial-screen image and to turn OFF said display of said character information when said second key is pressed and said first key is ON and said partial-screen image is displayed, and for turning ON and OFF said character information corresponding to said full-screen image when said third key is pressed causing said mute of sound to turn ON and said mute of sound to turn OFF alternately. - View Dependent Claims (4, 5)
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Specification