Optical Disc Drive Contiguous Opening for Compact Disc Handling
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Solution Overview
Problem
Traditional optical disc drives require complex and expensive robot mechanisms for disc loading and unloading, which are large, slow, and inefficient, especially in high-density storage systems.
Innovation Solution
A compact disc retrieval unit (DRU) with a disc gripper mechanism that uses a contiguous opening on the optical disc drive to directly deliver discs to the spindle, reducing the need for multiple actions and enabling high-density packing and efficient disc handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional robot mechanisms are used for disc loading and unloading, then the disc handling function is achieved, but the device complexity, size, and cost increase significantly
Solution Approach 1:
The patent extracts the disc loading/unloading function from a complex robot mechanism and implements it through a simple contiguous opening on the drive front face. The opening allows direct access for disc insertion and removal, eliminating the need for complex robotic arms, grippers, and control systems while maintaining full disc handling capability.
Solution Approach 2:
Instead of using a mechanism that actively grabs and moves discs (traditional approach), the patent inverts the approach by providing a passive opening that allows discs to be directly placed and removed. This simplifies the system from an active manipulation mechanism to a passive access structure.
2Ease of operation
If traditional robot mechanisms are used for disc loading and unloading, then the disc handling function is achieved, but the device size increases
Solution Approach 1:
The patent removes the bulky robot mechanism components from the drive enclosure and replaces them with a minimal contiguous opening on the front face. This extraction of the disc handling function to a simple aperture dramatically reduces the overall drive size while maintaining operational capability.
3Ease of operation
If traditional robot mechanisms are used for disc loading and unloading, then the disc handling function is achieved, but the operation speed decreases
Solution Approach 1:
By extracting the disc handling function from a multi-step robot mechanism to a simple contiguous opening, the patent enables direct and rapid disc insertion and removal. This eliminates the sequential operations required by robotic systems (positioning, gripping, moving, releasing), thereby significantly increasing operation speed.
4Ease of operation
If traditional robot mechanisms are used for disc loading and unloading, then the disc handling function is achieved, but the system cost increases
Solution Approach 1:
The patent extracts the expensive robot mechanism components and replaces them with a simple contiguous opening structure. This dramatically reduces manufacturing costs by eliminating complex mechanical parts, actuators, sensors, and control electronics while maintaining the essential disc handling function.
5Quantity of substance
If high-density packing is implemented, then storage capacity increases, but disc retrieval efficiency decreases due to complex robot mechanisms
Solution Approach 1:
By removing the complex robot mechanism that slows down disc retrieval, the patent enables high-density packing to be combined with efficient access. The contiguous opening allows rapid disc insertion and removal even in high-density configurations, as each drive can be independently accessed without interfering with neighboring drives.
Data Source
AI summary
An optical disc drive includes a spindle connected to an optical assembly. A disc clamp device is configured to hold an optical disc on the spindle. A contiguous opening on at least two adjacent sides in a plane of a disc mount position intersect at a common corner of the optical disc drive.