Holographic memory information encoding method, holographic memory recording method, and holographic memory device

摘要

Provided is an information encoding method and a holographic memory device which increase the amount of information per page of a holographic memory and reduce the bit error rate to ensure a larger multiplexing number. The holographic memory information encoding method expresses information of signal page data in a holographic memory as a multi-stage data using different resolution by block coding, and superimposes each data on a single page of signal page data. The multi-stage data using different resolution is realized by light amplitude data and phase data. The amplitude data is divided by area through block coding. When n odd-numbered ON bits exist in a divided area of the phase data, a phase of 2πs/n (where n and s are natural numbers) is imparted as s-th phase information to one value of binary data, and the same phase is imparted to the other value of binary data.

主权项

1. A holographic memory information encoding method which expresses information of signal page data in a holographic memory as a multi-stage data, the method comprising steps of: block coding and superimposing each data on a single page of signal page data using different resolution, wherein
the page data includes at least light amplitude data and phase data, dividing the amplitude data by area through block coding, and when n odd-numbered ON bits exist in a divided area of the amplitude data, imparting a phase of 2πs/n as s-th phase information to one value of binary data, where n and s are natural numbers, and providing the same phase for the other value of binary data.