Information picture display device using a double-picture type screen
First Claim
1. A display device for displaying video signals on a double-picture type screen, comprising:
- a double window processing unit for processing at least a first video signal to display on said double-picture type screen;
a TV microcomputer for controlling operation of said double window processing unit according to a selected screen mode;
information processing means, connected to said TV microcomputer, for connecting a value added network to said display device, for decoding information data received from said value added network, for generating an information video signal, for identifying the selected screen mode and for outputting a switching control signal;
switching means for selecting one of a second video signal and said information video signal according to said switching control signal to output a selected video signal to said double window processing unit, wherein said double window processing unit receives said first video signal and said selected video signal and outputs a processed video signal; and
display controlling means for controlling display of said processed video signal output by said double window processing unit on said double-picture type screen.
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Abstract
In an information picture display device using a double-picture type screen, a TV microcomputer controls a double window processing unit, an information processing unit processes information data received from a value added network and recognizes a selected screen mode to then output a switching control signal. The device is constructed so that the output of a switching unit for selecting one of a sub-video signal and a signal processed in the information processing unit is input to the double window processing unit, thereby displaying an information signal on the entire double-picture type screen, displaying the information signal and a TV signal separately on partitions of the double-picture type screens, or displaying the information signal superimposed on the TV signal. When the information signal is displayed on the entire screen, the signal processed in the information processing unit is displayed directly without passing through the double window processing unit, thereby improving picture quality.
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Citations
13 Claims
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1. A display device for displaying video signals on a double-picture type screen, comprising:
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a double window processing unit for processing at least a first video signal to display on said double-picture type screen; a TV microcomputer for controlling operation of said double window processing unit according to a selected screen mode; information processing means, connected to said TV microcomputer, for connecting a value added network to said display device, for decoding information data received from said value added network, for generating an information video signal, for identifying the selected screen mode and for outputting a switching control signal; switching means for selecting one of a second video signal and said information video signal according to said switching control signal to output a selected video signal to said double window processing unit, wherein said double window processing unit receives said first video signal and said selected video signal and outputs a processed video signal; and display controlling means for controlling display of said processed video signal output by said double window processing unit on said double-picture type screen. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A display device for displaying video signals on a double-picture type screen, comprising:
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a double window processing unit for processing at least a first video signal to be displayed on said double-picture type screen; a TV microcomputer for controlling operation of said double window processing unit according to a selected screen mode; an information processing unit, connected to said TV microcomputer and to a value added network, for decoding information data received from said value added network, for outputting an information chrominance signal and horizontal and vertical sync signals, for identifying the selected screen mode and for outputting a plurality of switching control signals; an encoder for encoding said information chrominance signal into said horizontal and vertical sync signals and for generating an information video signal; first switching means for selecting one of a second video signal and said information video signal in accordance with a first switching control signal output by said information processing unit to output a selected video signal to said double window processing unit, wherein said double window processing unit receives said first video signal and said selected video signal and outputs a processed video signal; second switching means for selecting said information video signal in an information mode wherein only said information video signal is displayed on said double-picture type screen, and for selecting said processed signal output from said double window processing unit during display modes other than said information mode in accordance with a second switching control signal; and display controlling means for controlling display of an output signal selected by said second switching means on said double-picture type screen. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification