OPENHOUSE 2015

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Exhibition

8K

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High-density Holographic Memory

For archiving 8K content

Outline

We are conducting research into high-density holographic memory for long-term storage of 8K Super Hi-Vision (8K) programs. This exhibit shows the technology to increase recording density, including a method of multiplexing data recorded onto a holographic medium, as well as the process of reading compressed 8K signal data from the medium and showing it as video.

Feature

●Increasing the multiplex number by using two-dimensional angle multiplexing

We previously used the “angle multiplexing” method that records data by changing the angle of incident light on the medium. We have developed a new“two-dimensional angle multiplexing” method that uses the position of the recording medium as an additional multiplex axis. This method has increased the multiplex number by four times over that of single-angle multiplexing.

●Recording and reproduction of 8K videos

We are using holographic memory to record and reproduce compressed 8K video signals. In addition to the parallel signal processing method we previously developed, we have improved the mechanical system, thus enabling a stable reproduction.

Future plans

We are aiming at establishing a means of archiving 8K video and putting it to practical use as a new recording technology by further increasing the density and data transfer rate.

●This research is being conducted in cooperation with Nippon Steel & Sumikin Chemical Co., Ltd.

Principle of holographic memory using two-dimensional angle multiplexing
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