The history of optical recording can be divided into a few number of distinct major contributions.
By 1985, Russell held over 25 patents to various technologies related to optical recording and playback.
The demonstration showed that it is possible by using digital optical recording and playback to reproduce audio signals with superb stereo quality.
There, in 1965, Russell invented the overall concept of optical digital recording and playback.
MultiLevel optical recording is an example of baseband pulse-amplitude modulation.
For optical recording on film there are two methods utilized.
Holograms due to the inherent parallel nature of optical recording are able to quickly process large amounts of data.
Subsequently, the original soundtrack, with the composer conducting, has been released from an optical recording.
It is suggested that an artifact of the optical recordings may cause these singularities.
DIP is a red dye and has been used as active material for optical recording.