Storage Interface Voltage Mapping for Adaptive Data Rates
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Solution Overview
Problem
Existing storage systems face inefficiencies in power management and consumption due to fixed voltage levels that do not adapt to varying data transmission rates, leading to suboptimal power usage.
Innovation Solution
A storage system that dynamically adjusts voltage levels of the VCCQL voltage based on data transmission rates, allowing the host device to supply voltages adaptively regulated to enhance power efficiency by using the VCCQL voltage directly without additional conversion during normal operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If fixed voltage levels are used for the storage device, then the device structure is simple and easy to operate, but power consumption is high and does not adapt to varying data transmission rates
Solution Approach 1:
The patent implements dynamic voltage adjustment by enabling the host device to change the voltage level supplied to the storage device based on the current data transmission rate. The system transitions from a static fixed voltage approach to a dynamic adaptive approach where voltage levels are adjusted in real-time according to transmission requirements, resolving the contradiction between power efficiency and adaptability.
Solution Approach 2:
The patent changes the voltage parameter (VCCQL) based on data transmission rate requirements. By defining multiple voltage levels (first voltage level for first data transmission rate, second voltage level for second data transmission rate) and switching between them according to transmission needs, the system achieves both power optimization and adaptability to varying transmission rates.
2Use of energy by moving object
If additional voltage conversion is performed during normal operations, then voltage levels can be optimized for different transmission rates, but device complexity and power consumption increase
Solution Approach 1:
The patent extracts the voltage conversion function from the storage device and relocates it to the host device. By having the host device directly supply different voltage levels without requiring conversion circuits in the storage device, the system reduces overall complexity while maintaining power efficiency benefits. The storage device simply receives and uses the voltages provided by the host.
Solution Approach 2:
The host device takes responsibility for providing appropriately regulated voltages to the storage device based on transmission rate requirements. This self-service approach eliminates the need for additional conversion infrastructure in the storage device, reducing complexity while maintaining the ability to optimize power efficiency through adaptive voltage supply.
Data Source
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AI summary
Provided is an operating method of a storage device (200), the operating method including providing mapping information (VL_CNF) to a host (100) when an initialization operation is performed, the mapping information (VL_CNF) including information about a plurality of data transmission rates (LS1, LS2, HS1 - HS6) and voltage levels (VL1 - VL4) of a first voltage (VCCQL), receiving the first voltage (VCCQL) from the host (100) through a first voltage pin (P7'), the first voltage (VCCQL) having a first voltage level (VL1), receiving a first change request (DRC_REQ) from the host (100), the first change request (DRC_REQ) being a request to change a data transmission rate from a first data transmission rate (DR1) to a second data transmission rate (DR2), and receiving the first voltage (VCCQL) from the host (100) through the first voltage pin (P7'), the first voltage (VCCQL) having a second voltage level (VL2) mapped to the second data transmission rate (DR2).