External Storage Device Reference Frequency Setting
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Solution Overview
Problem
The challenge lies in synchronizing high-speed operations between external storage devices and hosts, where existing technologies face limitations in efficiently setting and maintaining optimal reference frequencies, especially in varying host environments, which affects data processing speed and synchronization.
Innovation Solution
An external storage device with a device manager that sets a reference frequency using information received in a low-speed mode, allowing it to operate in a high-speed mode with a reference clock signal, and a method that includes initializing the device, recognizing it by the host, setting the reference frequency, and generating a register setting response, ensuring compatibility across different host environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the external storage device operates in high-speed mode, then data processing speed is improved, but synchronization between the external storage device and host becomes difficult to maintain
Solution Approach 1:
The patent applies preliminary action by setting the reference frequency during low-speed mode initialization before transitioning to high-speed mode. The device manager receives reference frequency information from the host in low-speed mode, stores it in a reference clock register, and then uses this pre-configured frequency to generate the reference clock signal for high-speed operation, ensuring synchronization is established before high-speed data transfer begins
Solution Approach 2:
The patent implements feedback through the initialization process where the host provides reference frequency information to the external storage device, the device manager processes this information and configures the reference clock register, and then uses this configured frequency to generate the reference clock signal. This feedback loop ensures the device operates at the correct frequency for synchronization
2Adaptability or versatility
If the external storage device is designed to work with multiple host environments, then adaptability is improved, but setting the correct reference frequency becomes more complex
Solution Approach 1:
The patent applies universality by designing the external storage device to receive reference frequency information from the host through a standardized interface during initialization. The device manager can handle different host environments universally by processing the reference frequency command regardless of the specific host type, storing it in the reference clock register, and using it to generate the appropriate reference clock signal for high-speed operation
Solution Approach 2:
The patent implements self-service through the device manager's ability to automatically receive reference frequency information from the host during initialization, configure the reference clock register autonomously, and generate the reference clock signal without requiring manual intervention. This self-configuring capability simplifies compatibility across different host environments
Data Source
AI summary
An external storage device and method of setting a reference frequency for the same are provided. The external storage device includes: a device manager configured to set a reference frequency using information about the reference frequency for a high-speed mode received in a low-speed mode after the external storage device starts initialization, and control the external storage device to operate at the reference frequency in the high-speed mode, wherein the external storage device is a removable device which is attachable to and detachable from a host and is configured to operate according to a reference clock signal with the reference frequency in the high-speed mode.