ClassID:

198021

G11B2007/00656 - CPC Classification

Classification description:

Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor; Recording, reproducing or erasing methods; Read, write or erase circuits therefor; Recording, reproducing or erasing by using optical interference patterns, e.g. holograms Counterpropagating holography

Recent Application in this class: