Television – Format conversion – Conversion between standards with different aspect ratios
Patent
1999-01-27
2000-09-05
Kostak, Victor R.
Television
Format conversion
Conversion between standards with different aspect ratios
348913, H04N 701
Patent
active
06115072&
ABSTRACT:
A method and apparatus for converting a digital video image to a higher aspect ratio format at a decoder by line dropping. For example, conversion from a 4:3 to a 16:9 letterbox format may be achieved. Line dropping for non-anchor pictures (e.g., B-pictures) occurs on a decoding-side of the decoder, prior to storage in memory. Line dropping for anchor pictures (e.g., I- and P-pictures) occurs on a display-side of the decoder, after being retrieved from the memory, and prior to display. Additional memory space is freed to allow storage of additional decoded data, thus compensating for the decrease in display processing time caused by a reduced number of active video lines that are processed with the letter box format.
REFERENCES:
patent: 4953025 (1990-08-01), Saitoh et al.
patent: 5475442 (1995-12-01), Matsushita et al.
patent: 5534934 (1996-07-01), Katsumata et al.
patent: 5638130 (1997-06-01), Linzer
patent: 5675387 (1997-10-01), Hoogenboom et al.
patent: 5793434 (1998-08-01), Lee
patent: 5825424 (1998-10-01), Canfield et al.
patent: 5832124 (1998-11-01), Sato et al.
patent: 5881205 (1999-03-01), Andrews et al.
patent: 5912710 (1999-06-01), Fujimoto
patent: 5926613 (1999-07-01), Schaffer
Anderson Candace
Vuong Bao
General Instrument Corporation
Hoppin Ralph F.
Kostak Victor R.
Lipsitz Barry R.
Motorola Inc.
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