Television – Format conversion – Conversion between standards with different aspect ratios
Patent
1997-09-16
1999-08-24
Kostak, Victor R.
Television
Format conversion
Conversion between standards with different aspect ratios
348441, 348704, H04N 701
Patent
active
059430982
ABSTRACT:
The present invention relates to a device for converting a television image format including two memories for storing image lines, alternatively switched in the read and write mode, and a control circuit issuing to these memories a first write frequency and a second read frequency, the control circuit including programmable means for generating said frequencies controlled by a horizontal synchronization signal, the read frequency being programmed to follow a predefined variation law having a period corresponding to the duration of one scanning line.
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Patent Abstracts of Japan, vol. 95, No. 6, Jul. 31, 1995 & JP-A-07 067045 (Mitsubishi Electric).
Patent Abstracts of Japan, vol. 96, No. 3, Mar. 29, 1996 & JP-A-07 298086 (Toshiba).
Lagarde Jean-Pierre
Leurent Patrice
Kostak Victor R.
SGS-Thomson Microelectronics S.A.
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