Control of an image display based on a permission signal

Details Control of an image display based on a permission signal Control of an image display based on a permission signal

1997-11-10

1999-01-19

Chevalier, Robert

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

386 97, H04N 591, H04N 5928

Patent

active

058623000

ABSTRACT:
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.

REFERENCES:
patent: 5510902 (1996-04-01), Fujinami et al.
patent: 5703997 (1997-12-01), Kitamura et al.

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