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US 5,862,300 AGranted
Control of an image display based on a permission signal
AssigneeSony Corporation
InventorsYoichi Yagasaki, Motoki Kato, Yasushi Fujinami
Life of this patent
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AssigneeSony Corporation
InventorsYoichi Yagasaki, Motoki Kato, Yasushi Fujinami
Estimating the term…
The display of an image in a mode which is against the intentions of the producer is made possible. An additional information decoder decodes timing information and edge.sub.-- crop.sub.-- flag from additional information codes supplied from a demultiplexer, and outputs them to a controller. The flag edge.sub.-- crop.sub.-- flag indicates whether or not a display in the edge cropped mode is permitted by the producer of the image. The controller turns on a horizontal filter and turns off a vertical filter when this flag indicates the permission in the edge cropped mode or when the edge cropped mode is instructed from an external control signal, and causes an image in the edge cropped mode to be displayed on a monitor having an aspect ratio of 4:3. When the edge cropped mode is prohibited, the horizontal filter is turned off, and the vertical filter is turned on, causing the image to be displayed in the letter box mode.
An encoder for encoding an image signal representing a plurality of images displayed in at least first and second predetermined modes, comprising:
A data medium for recording an additional information signal and an image signal representing a plurality of images displayed in at least first and second predetermined modes, said image signal having been coded by a first coder and said additional information signal having been coded by a second coder, said additional information signal representing additional information that corresponds to said image signal and that includes a flag for prohibiting said images to be displayed in said first predetermined mode, said additional information further including a time period during which said flag is effective such that said images are displayed only in said second predetermined mode if said flag is effective, wherein said image signal and said additional information signal are multiplexed and recorded on said data medium.
Apparatus for decoding an input signal to provide an additional information signal and an image signal representing a plurality of images displayed in at least first and second predetermined modes, said image signal having been coded by a first coder and said additional information signal having been coded by a second coder, said additional information signal representing additional information that corresponds to said image signal and that includes a flag for prohibiting said images to be displayed in said first predetermined mode, said additional information further including a time period during which said flag is effective such that said images are displayed only in said second predetermined mode if said flag is effective, said apparatus comprising:
A method for decoding an input signal to provide an additional information signal and an image signal representing a plurality of images displayed in at least first and second predetermined modes, said image signal having been coded by a first coder and said additional information signal having been coded by a second coder, said additional information signal representing additional information that corresponds to said image signal and that includes a flag for prohibiting said images to be displayed in said first predetermined mode, said additional information further including a time period during which said flag is effective such that said images are displayed only in said second predetermined mode if said flag is effective, said method comprising the steps of:
Dependencies are inferred from the claim text.