Title:
OPTICAL SOUND TRACK OF STEREO SOUND MOVIES AND APPARATUS FORRECORDING AND REPRODUCING SAME
Document Type and Number:
Japanese Patent JPS59177534
Kind Code:
A
Abstract:
Discrete four-channel photographic (optical) motion picture sound-tracks are disclosed that are compatible with existing monophonic and stereo variable area (SVA) theatre projecting equipment. Six track and four track embodiments are disclosed. In the four track embodiments 4-4-4 matrix encoding is employed in producing the sound-track. The drawing shows a six track embodiment with three tracks in each of the left and right areas (SVA LT and SVA RT). The tracks comprise left and right tracks (L and R) and two centre channel tracks (C') plus two surround channel tracks (S').-Apparatus for recording and reproducing the compatible four-channel sound-tracks are also disclosed.
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Inventors:
IWAN AARU AREN
KUREIGU SHII TOTSUDO
KUREIGU SHII TOTSUDO
Application Number:
JP4800584A
Publication Date:
October 08, 1984
Filing Date:
March 13, 1984
Export Citation:
Assignee:
DOLBY LAB LICENSING CORP
International Classes:
G03B31/02; G11B7/00; G11B7/003; G03B31/00; G11B7/007; G11B7/08; G11B7/20; G11B20/00; G11B27/34; H04S3/02; (IPC1-7): G03B31/00; G03B31/02
Domestic Patent References:
| JPS5017843A | 1975-02-25 | |||
| JPS4820401A | ||||
| JPS5017844A | 1975-02-25 |
Attorney, Agent or Firm:
Yamazaki Yuzo
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