Display device capable of displaying external signals and information data using a double-picture type screen
First Claim
1. A display device capable of displaying a first video signal and a second video signal on a display of a double-picture type screen, said device comprising:
- a double window processing unit for processing said first video signal and said second video signal to be displayed on said double-picture type screen, wherein said double window processing unit outputs a television video signal and first horizontal and vertical synchronization signals which correspond to at least one of said first video signal and said second video signal;
information processing means for receiving information data from a value added network, wherein said information processing means outputs an information video signal relating to said information data, generates second horizontal and vertical synchronization signals corresponding to said information video signal, and outputs first and second switching control signals;
first switching means for selectively outputting either said television video signal or said information video signal as a selected video signal in accordance with said first switching control signal;
second switching means for selectively outputting either said first horizontal and vertical synchronization signals or said second horizontal and vertical synchronization signals as selected synchronization signals in accordance with said second switching control signal; and
display control means for causing said selected video signal to be displayed on said display in accordance with said selected synchronization signals.
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Accused Products
Abstract
A display device displays first and second video signals on a double-picture type screen. The device comprises a double window processing unit, a microcomputer, an information processing unit, a compressor, first through fourth switches, and a display unit. The double window processing unit processes the first and second video signals and outputs a television video signal and first synchronization signals. The microcomputer controls the double window processing unit and outputs first and second switching signals. The information processing unit receives data from a value added network, outputs a corresponding information video signal, generates second synchronization signals, and outputs third and fourth switching signals. The compressor receives an external video signal, generates a corresponding compressed is video signal, and outputs third synchronization signals. The first and fourth switches selectively output the first, second, or third synchronization signals as selected synchronization signals. The second and third switch selectively output the television video signal, the compressed video signal, or the information video signal as a selected video signal. The display unit displays the selected video signal based on the selected synchronization signals. As a result of the configuration above, the information video signal, the external video signal, and the television video signal can be displayed in various configurations.
88 Citations
28 Claims
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1. A display device capable of displaying a first video signal and a second video signal on a display of a double-picture type screen, said device comprising:
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a double window processing unit for processing said first video signal and said second video signal to be displayed on said double-picture type screen, wherein said double window processing unit outputs a television video signal and first horizontal and vertical synchronization signals which correspond to at least one of said first video signal and said second video signal; information processing means for receiving information data from a value added network, wherein said information processing means outputs an information video signal relating to said information data, generates second horizontal and vertical synchronization signals corresponding to said information video signal, and outputs first and second switching control signals; first switching means for selectively outputting either said television video signal or said information video signal as a selected video signal in accordance with said first switching control signal; second switching means for selectively outputting either said first horizontal and vertical synchronization signals or said second horizontal and vertical synchronization signals as selected synchronization signals in accordance with said second switching control signal; and display control means for causing said selected video signal to be displayed on said display in accordance with said selected synchronization signals. - View Dependent Claims (2, 3, 4, 5, 6, 23, 24)
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7. A display device capable of displaying a first video signal and a second video signal on a display of a double-picture type screen, said device comprising:
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compressing means for receiving an external video signal and compressing said external video signal into a compressed video signal, wherein said compressing means further outputs first horizontal and vertical synchronization signals corresponding to said compressed video signal; information processing means for receiving information data from a value added network, wherein said information processing means outputs an information video signal relating to said information data, generates second horizontal and vertical synchronization signals corresponding to said information video signal, and outputs first and second switching control signals; first switching means for selectively outputting either said compressed video signal or said information video signal as a selected video signal in accordance with said first switching control signal; second switching means for selectively outputting either said first horizontal and vertical synchronization signals or said second horizontal and vertical synchronization signals as selected synchronization signals in accordance with said second switching control signal; and display control means for causing said selected video signal to be displayed on said display in accordance with said selected synchronization signals. - View Dependent Claims (8, 9, 10, 11, 12, 25, 26)
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13. A display device capable of displaying a first video signal and a second video signal on a display of a double-picture type screen, said device comprising:
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a double window processing unit for processing said first video signal and said second video signal to be displayed on said double-picture type screen, wherein said double window processing unit outputs a television video signal and first horizontal and vertical synchronization signals which correspond to at least one of said first video signal and said second video signal; a television microcomputer for controlling an operation of said double window processing unit and for outputting a first switching control signal and a second switching control signal; information processing means for receiving information data from a value added network, wherein said information processing means outputs an information video signal relating to said information data, generates second horizontal and vertical synchronization signals corresponding to said information video signal, and outputs third and fourth switching control signals; compressing means for receiving an external video signal and compressing said external video signal into a compressed video signal, wherein said compressing means further outputs third horizontal and vertical synchronization signals corresponding to said compressed video signal; first switching means for selectively outputting either said first horizontal and vertical synchronization signals or said third horizontal and vertical synchronization signals as intermediate synchronization signals in accordance with said first switching control signal; second switching means for selectively outputting either said television video signal or said compressed video signal as an intermediate video signal in accordance with said second switching control signal; third switching means for selectively outputting either said intermediate video signal or said information video signal as a selected video signal in accordance with said third switching control signal; fourth switching means for selectively outputting either said intermediate synchronization signals or said second horizontal and vertical synchronization signals as selected synchronization signals in accordance with said fourth switching control signal; and a display control means for causing said selected video signal to be displayed on said display in accordance with said selected synchronization signals. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 27, 28)
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Specification