发明名称 Reproduction of digital audio data optically recorded in a motion picture film
摘要 An apparatus for optically reproducing digital speech data recorded on a motion picture film is disclosed. The digital speech data recorded on an emulsifier surface of the motion picture film is illuminated with an illuminating light from the side of a base surface of the motion picture film, and the light transmitted through the emulsifier surface is collected as an incident light by a reproducing lens. With the present apparatus, it is possible to reduce the variations in the volume of the light of the reproduced digital signals otherwise caused by the scratch of dust present on the film base surface.
申请公布号 US5553049(A) 申请公布日期 1996.09.03
申请号 US19940330374 申请日期 1994.10.27
申请人 SONY CORPORATION 发明人 NAKAO, TAKASHI
分类号 G03B31/02;G11B7/00;G11B7/003;G11B7/005;(IPC1-7):G11B3/76;G03B31/06 主分类号 G03B31/02
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