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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorToyoaki Unemura
Estimating the term…
In a display apparatus (PI) displaying a closed-caption (Scc, DS) multiplexed in the first and second component video signals (Scv1: Y, PB, and PR, Svc2: Y and C) received from externally provided video signal sources, a video signal selector (7) selects one of said first and second component video signals (Scv1, Scv2); a closed-caption extractor (3) extracts the closed-caption (Scc, DS) from said selected one of first and second component video signals (Scv1, Scv2); and a controller (10) controls the closed-caption extractor (3) based on the format type of the selected first and second component video signals (Scv1 and Scv2).
A display apparatus for displaying a closed-caption multiplexed in different format types of video signals received from externally provided video signal sources, said apparatus comprising:
Dependencies are inferred from the claim text.
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Receiver circuitry for the reception of television signals according to analogue transmission standards: for displaying additional information
Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame: circuits for the digital…
For the transmission of additional display-information, e.g. menu for programme or channel selection: for the transmission of subtitles
Data services, e.g. news ticker: for displaying subtitles
Term end not estimated
1. Field of the Invention
The present invention relates to a display apparatus that will not fail to display a closed-caption superimposed on a component video signal provided thereto.
2. Description of the Background Art
FIG. 1 is a block diagram showing the structure of a display apparatus according to a first embodiment of the present invention;
FIG. 2 is a flow chart showing the operation for closed-caption process in the display apparatus of FIG. 1;
FIG. 3 is a block diagram showing the structure of a display apparatus according to a second embodiment of the present invention;
(First Embodiment)
Referring to FIG. 1, the structure of a display apparatus according to a first embodiment of the present invention is described. A display apparatus PI1 includes a color-difference signal demodulator 1, a CC decoder 3, a display 5, a component video signal input terminal 6, a video signal selector 7, a sync-separator 8, an RGB processor 9, a controller 10, and a synchronizing signal determiner 11.
The component video signal input terminal 6 receives a first component video signal Scv1 from an external component video signal source typified by a digital-television STB or DVD player. The component video signal Scv1 includes a luminance signal Y, a color-difference signal PB, and a color-difference signal PR. The first component video signal input terminal 6 provides these signals Y, PB, and PR forming the component video signal Scv1 to the video signal selector 7.