Display system with switchable aspect ratio

Details Display system with switchable aspect ratio Display system with switchable aspect ratio

1995-05-25

1997-06-10

Kostak, Victor R.

Television

Format conversion

Conversion between standards with different aspect ratios

348556, H04N 701, H04N 546

Patent

active

056381301

ABSTRACT:
A system and method for receiving a video sequence with a given aspect ratio and displaying that sequence on a device with a different aspect ratio in letterbox form by performing letterbox type conversion immediately before display. In letterbox form, the viewer sees the entire active region of the picture but the whole screen is not used. In one embodiment a video sequence with a given aspect ratio can be displayed on a device with a different aspect ratio in letterbox or pan-scan form, at the users discretion, by performing, respectively, letterbox or pan-scan conversion immediately before display. Thus, the user can decide to use the entire screen or to see the entire picture.

REFERENCES:
patent: 5243421 (1993-09-01), Nagata et al.
patent: 5343238 (1994-08-01), Takata et al.
patent: 5400077 (1995-03-01), Cookson et al.
patent: 5534934 (1996-07-01), Katsumata et al.

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