Television receiver and tuning control method including a program-scanning mode
First Claim
1. A television receiver in which independent images are respectively displayed on a sub-picture screen of a part of an image display area and a main picture screen of an image display area other than said sub-picture screen, comprising:
- first and second tuners for independently carrying out tuning operations and respectively providing output signals;
signal processing means supplied with one of said output signals from one of said first and second tuners for processing said one output signal to display said one output signal on said sub-picture screen;
synthesizing means for synthesizing the other of said output signals from said first and second tuners and an output signal from said signal processing means;
switching means for selectively supplying the output signals of said first and second tuners to said signal processing means and said synthesizing means; and
control means for controlling said switching means such that a video signal received at one of said first and second tuners and displayed on said main picture screen is displayed on said sub-picture screen, and displaying a video signal of said main picture screen by sequentially changing a tuning channel of the other of said first and second tuners.
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Accused Products
Abstract
When a program-scanning is executed, the scanning picture is displayed such that contents of the image can be reliably recognized while an image of the program that has been displayed so far is displayed on the picture screen. A television receiver has a function to display a sub-picture smaller than a main picture. When the television receiver enters a program-scanning mode, a broadcasting program or an image source whose image has been displayed on the whole picture screen of a display or whose image has been displayed as a main picture (41) is displayed on a sub-picture screen (42). Image of a plurality of broadcasting programs which result from changing the tuning state in the tuner are sequentially displayed on the main picture (41), thereby executing the program-scanning.
105 Citations
19 Claims
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1. A television receiver in which independent images are respectively displayed on a sub-picture screen of a part of an image display area and a main picture screen of an image display area other than said sub-picture screen, comprising:
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first and second tuners for independently carrying out tuning operations and respectively providing output signals; signal processing means supplied with one of said output signals from one of said first and second tuners for processing said one output signal to display said one output signal on said sub-picture screen; synthesizing means for synthesizing the other of said output signals from said first and second tuners and an output signal from said signal processing means; switching means for selectively supplying the output signals of said first and second tuners to said signal processing means and said synthesizing means; and control means for controlling said switching means such that a video signal received at one of said first and second tuners and displayed on said main picture screen is displayed on said sub-picture screen, and displaying a video signal of said main picture screen by sequentially changing a tuning channel of the other of said first and second tuners. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling a channel-selection of a television receiver in which an image display area is divided into a main picture screen and a sub-picture screen on which independent images are displayed and a viewer is allowed to select a desired channel, comprising:
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a first step for displaying a video signal, which has been received at a first tuner and displayed on said main picture screen, as a sub-picture; a second step for displaying a video signal received at a second tuner as a main picture; and a third step for sequentially changing a tuned channel by said second tuner at every predetermined time period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of operating a television receiver in which an image display area is divided into a main picture screen and a sub-picture screen on which independent images are respectively displayed and in which a viewer selects a desired channel, including:
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a first step of displaying a video signal, which has been received at a first tuner and displayed on the main picture screen, on the sub-picture-screen; a second step of displaying a video signal, which is received by a second tuner, on said main picture screen; and a third step of sequentially changing a channel selected by said second tuner at every predetermined time.
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Specification