Light Interference Module for Holographic Storage Multiplexing
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Solution Overview
Problem
Current holographic storage technologies face limitations in increasing storage capacity and efficiency, particularly in managing the interference patterns and power consumption associated with data storage on optical media.
Innovation Solution
A holographic storage apparatus employing a light interference module with multiple light-guiding elements and lenses to create angle and position multiplexing interference patterns on optical storage media, allowing for increased data density and reduced motor power consumption by enabling the storage of multiple patterns at different positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single reference light beam is used for holographic storage, then the storage system is simple, but the storage capacity per unit page is limited
Solution Approach 1:
The reference light beam is segmented into multiple independent light-guiding elements (first light-guiding element, second light-guiding element, etc.), each capable of projecting reference light beams at different angles or positions. This segmentation allows multiple interference patterns to be stored simultaneously on the same storage layer, thereby increasing storage capacity without requiring additional storage media.
Solution Approach 2:
The patent introduces angular multiplexing by directing reference light beams from different angles onto the storage medium, and positional multiplexing by projecting beams to different locations. This adds dimensional diversity (angle and position) to the storage process, allowing multiple data pages to be stored in what would traditionally be a single storage location, thus resolving the contradiction between storage capacity and device complexity.
2Use of energy by moving object
If the motor drives storing zones to move shorter distances, then data access is faster, but power consumption increases
Solution Approach 1:
By introducing angular and positional multiplexing dimensions, the system can access different stored pages by changing the angle or position of the reference light beam rather than physically moving the storage medium. This allows the motor to drive storing zones over longer distances more efficiently, reducing power consumption while maintaining fast access times through optical repositioning.
Solution Approach 2:
The light interference module serves multiple functions: it can store multiple interference patterns simultaneously and access them by varying beam parameters. This multi-functionality reduces the need for frequent motor-driven repositioning, thereby reducing overall power consumption while maintaining efficient data access.
3Quantity of substance
If multiple interference patterns are stored at the same position, then storage density increases, but interference patterns overlap and reduce readability
Solution Approach 1:
The patent stores multiple interference patterns at the same physical position by encoding them in different angular or positional dimensions. When reading, the system distinguishes between patterns by adjusting the reference beam angle or position, allowing high data density while maintaining clear pattern distinction through dimensional separation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances storage capacity and reduces motor power loss by enabling the storage of multiple interference patterns at different positions, improving data density and accuracy while minimizing motor load.
Implementation Method 1
image data can be written into a recording medium (a photosensitive medium) via interference between a signal light beam and a reference light beam
Data Source
AI summary
A light interference module includes an object lens, a first light-guiding element, and a second light-guiding element. The object lens is configured to project a signal light beam to an optical storage media. The first light-guiding element is configured to project a first reference light beam to the optical storage media, in which the first reference light beam and the signal light beam produce a first interference pattern on the optical storage media. The second light-guiding element is configured to project a second reference light beam to the optical storage media, in which the second reference light beam and the signal light beam produce a second interference pattern on the optical storage media, and the first interference pattern is different from the second interference pattern.