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AssigneeSony Corporation
InventorsShunji Umemura, Ichiro Sato, Katsuhiro Shimizu
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The present invention relates to a display apparatus, a marker signal making process, a marker signal detector circuit, and a control signal generator circuit that are suitable for use when making a display in which a display screen is divided into a plurality of areas and images whose picture qualities are different at every area are displayed. Thus, in the present invention, image signals (R/G/B) from input terminals 1R, 1G, 1B are supplied to a preamplifier IC 3, e.g. to respective sharpness improving circuits 32R, 32G, 32B therein. Image signals derived from the preamplifier IC 3 are subjected to DC voltage conversion by a cutoff adjusting amplifier 6 and then supplied, e.g. to a cathode ray tube 7 as a display means. A microcomputer 40 which is present within this apparatus and controls various kinds of functions forms first and second DC voltage data for controlling, e.g. the sharpness. These data are made into analog control DC voltage by D/A converters 34A, 34B and then selected by a switching circuit 36 to be supplied to the preamplifier IC 3. This switching circuit 36 is controlled by an arbitrary control signal. This enables the picture quality of image of photograph, moving video, etc. to be improved without making the information on characters, numerics, etc. hard to see, when displaying the image of photograph, moving video, etc. together with the information on characters, numerics etc.
A marker signal making process characterized by providing, in an image signal, signals in which primary color signals on respective predetermined levels are combined in arbitrary patterns, and
A marker signal detector circuit for marker signals that are made by providing, in an image signal, signals in which primary color signals on respective predetermined levels are combined in arbitrary patterns and by using a pattern of one of said primary color signals as a clock to form a marker code using patterns of the other primary color signals, and that specify an arbitrary area on a screen displaying said image signal, comprising:
A control signal generator circuit for marker signals that are made by providing, in an image signal, signals in which primary color signals on respective predetermined levels are combined in arbitrary patterns and by using a pattern of one primary color signal as a clock as well as patterns of the other primary color signals to form a marker code, and that specify an arbitrary area on a screen displaying at least said image signal, comprising:
A control signal generator circuit for marker signals that are made by providing, in an image signal, signals in which primary color signals on respective predetermined levels are combined in arbitrary patterns and by using a pattern of one primary color signal as a clock as well as patterns of the other primary color signals to form a marker code, and that specify an arbitrary area on a screen displaying at least said image signal and have a coded added at least to said marker signal provided at a horizontal starting end of said area for making measurable a length of said marker signal, comprising
Dependencies are inferred from the claim text.