Optical Head Array Parallel Data Reading and Writing
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Solution Overview
Problem
The increasing volume of data stored in optical storage media leads to low data read/write throughput, requiring improved data reading and writing capabilities to facilitate faster data access and storage.
Innovation Solution
The implementation of a data reading and writing apparatus featuring an optical head array with multiple laser heads and focal points, allowing for parallel data reading and writing, and a motion controller that moves the storage medium in linear directions rather than rotation, enhancing data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single laser head is used for data reading/writing, then the device complexity is low, but the data read/write throughput is insufficient
Solution Approach 1:
The patent divides the single laser head into multiple laser heads (first laser head and second laser head), each capable of independently reading/writing data. This segmentation allows parallel data access across multiple focal points, significantly improving throughput while maintaining manageable device complexity through modular architecture
Solution Approach 2:
The patent transitions from a single-point (one-dimensional) data access model to a multi-point (multi-dimensional) access model by introducing multiple laser heads with different focal points. This dimensional expansion enables simultaneous data operations at multiple locations, resolving the throughput limitation without proportionally increasing system complexity
2Speed
If rotational motion is used to position data, then the motion control is simple, but the data access speed is limited
Solution Approach 1:
The patent replaces the static rotational positioning mechanism with a dynamic linear motion system. The optical storage medium moves linearly along the optical axis direction, allowing faster and more direct positioning of data regions under the laser heads, thereby increasing data access speed while the motion controller manages the increased complexity
Solution Approach 2:
The patent substitutes the traditional rotational mechanical positioning system with a linear motion system controlled by a motion controller. This substitution enables more precise and faster positioning of the storage medium, improving data access speed while the electronic control system handles the complexity of motion management
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
This solution significantly improves data read/write throughput by enabling simultaneous processing of multiple data points, reducing the complexity of motion control, and increasing the flexibility and efficiency of data access and storage operations.
Implementation Method 1
The optical signal generator is configured to generate an optical signal, and then send the optical signal to the optical head array
Implementation Method 2
each laser head includes a plurality of focal points. The plurality of laser heads is configured to receive the optical signal generated by the optical signal generator, and apply the received optical signal to a plurality of data points of an optical storage medium by using the plurality of focal points of each laser head
Implementation Method 3
The motion controller is connected to the motion platform, and is configured to control, based on a storage address of the read data, the optical storage medium to move in a first direction on a plane on which the optical storage medium is located, or move in a second direction perpendicular to the first direction
Data Source
AI summary
Data reading and writing apparatuses and data reading and writing methods are provided. In a data reading apparatus or a data writing apparatus, an optical head array including a plurality of laser heads is disposed, so that a quantity of laser heads for reading/writing data is increased. In addition, each laser head is improved, and a plurality of focal points are disposed in the laser head, so that in a data reading/writing process, parallel reading/writing of a plurality of pieces of data may be implemented by using the plurality of laser heads and the plurality of focal points in the laser head, and a data read/write throughput of an optical storage medium may be improved.