Television – Basic receiver with additional function – For display of additional information
Reexamination Certificate
1996-01-04
2001-09-11
Harvey, Minsun Oh (Department: 2743)
Television
Basic receiver with additional function
For display of additional information
C348S564000, C348S563000, C348S445000
Reexamination Certificate
active
06288751
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an image display apparatus for displaying an image.
2. Description of the Prior Art
Heretofore, when displaying, for example, an image having an NTSC television signal using a television monitor apparatus conforming to a high-definition television system, the signal is supplied to the television monitor apparatus while increasing the number of scanning lines for the NTSC (National Television Systems Committee) television signal so as to conform to the high-definition television system. High definition television is generally recognized as a system which uses an increased number of horizontal lines of resolution per frame to enhance picture quality. Thus, as shown in
FIG. 1
, an image (reference numeral
21
) of the NTSC television signal is displayed on a predetermined position on the picture surface (reference numeral
22
) of the television monitor apparatus.
In the above-described conventional method, however, a blank portion on which an image is not displayed is present on the picture surface of the television monitor apparatus, as shown in
FIG. 1
, due to a difference in aspect ratio between the NTSC system and the high-definition television system. Such a blank portion is very uncomfortable to observe. In addition, the display picture surface of the television monitor apparratus cannot be effectively utilized.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an image display apparatus which can solve the above-described problems.
It is another object of the present invention to provide an image display apparatus which can display an image in a manner easy to observe.
These objects are accomplished, according to one aspect of the present invention, by an image display apparatus for displaying an image corresponding to an image signal, comprising an image display unit for displaying an image corresponding to an aspect ratio of a first image signal, and an image signal supply means for selectively inputting the first image signal and a second image signal having an aspect ratio different from that of the first image signal, for converting the second image signal into the image signal corresponding to the aspect ratio of the first image signal when the second image signal has been input, and for supplying the image display unit with the converted signal.
It is still another object of the present invention to provide an image display apparatus which can effectively utilize its display picture surface.
This object is accomplished, according to another aspect of the present invention, by an image display apparatus for displaying an image corresponding to an image signal, comprising an image display unit for displaying an image corresponding to an aspect ratio of a first image signal, image signal conversion means for inputting a second image signal having an aspect ratio different from that of the first image signal, and for converting the input second image signal into an image signal corresponding to the aspect ratio of the first image signal, and display control means for controlling the display unit so as to display the image signal formed by the image signal conversion means on a first display picture surface of the image display unit, and to display an image corresponding to another information on a second display picture surface which is present on the same picture surface as the first display picture surface and is different from the first display picture surface.
The foregoing and other objects and features of the present invention will become more apparent from the following detailed description of the preferred embodiments taken in connection with the accompanying drawings.
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Enari Masahiko
Yatomi Toshiya
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Harvey Minsun Oh
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