发明公开
EP1843584A1 Digital light processing display device
审中-公开
Anzeigevorrichtung mit Digitaler Lichtverarbeitung
- 专利标题: Digital light processing display device
- 专利标题(中): Anzeigevorrichtung mit Digitaler Lichtverarbeitung
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申请号: EP06290545.0申请日: 2006-04-03
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公开(公告)号: EP1843584A1公开(公告)日: 2007-10-10
- 发明人: Doyen, Didier , Bourdon, Pascal , Borel, Thierry
- 申请人: Thomson Licensing
- 申请人地址: 46, quai Alphonse Le Gallo 92100 Boulogne-Billancourt FR
- 专利权人: Thomson Licensing
- 当前专利权人: Thomson Licensing
- 当前专利权人地址: 46, quai Alphonse Le Gallo 92100 Boulogne-Billancourt FR
- 代理机构: Benezeth, Philippe J.L. M.
- 主分类号: H04N5/913
- IPC分类号: H04N5/913 ; G06T1/00 ; H04N9/31 ; H04N5/74
摘要:
The invention relates to a display device using the DLP (Digital Light Processing) technology. This invention is in the field of digital cinema and content protection, where camcorder acquisition followed by immediate illegal distribution creates important revenue losses for content owners. According to the invention, the addressing of the display device is modified in order to introduce an anti-copy processing. The display device comprises modulation means (500) for modulating the colour or brightness of video data of video pictures received at a first rate and for outputting at a second rate modulated video data, said second rate being a multiple of the first rate, subfield coding means (501) for coding said modulated video data into subfield data, said subfield data being delivered at the second rate, and addressing means (502,503) for addressing the array with said subfield data at a third rate. Advantageously, the third rate is not a multiple of the first rate.
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