Memory Boot-Up Mode Switching to Prevent Low-Battery Reset Loops
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Solution Overview
Problem
Memory systems fail to boot-up properly after battery failure due to insufficient power, leading to an infinite power reset loop until the battery is sufficiently charged, which disrupts the normal boot-up process.
Innovation Solution
Implementing systems and methods that adjust power and speed modes before boot-up to avoid the power reset loop by using low-power or low-speed modes, indicated by signals on GPIO or VSF/LSS pins, allowing the memory system to boot-up correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the memory system attempts to boot-up with insufficient power, then the boot-up process initiates, but the system enters an infinite power reset loop and fails to complete boot-up
Solution Approach 1:
The patent applies preliminary action by checking power availability before initiating the boot-up process. The system performs a power threshold check in advance to determine whether sufficient power is available, and only proceeds with boot-up if the threshold is met. This prevents the system from entering a futile boot-up attempt that would result in a power reset loop, thereby improving boot-up reliability while avoiding unnecessary power consumption.
2Ease of operation
If the memory system uses normal boot-up mode, then the system can complete boot-up with sufficient power, but the boot-up process cannot be initiated with low battery charge levels
Solution Approach 1:
The patent applies dynamics by making the boot-up mode adjustable based on power availability. The system dynamically selects between normal boot-up mode and low-power boot-up mode depending on whether the power threshold is met. This dynamic adaptation allows the system to maintain boot-up capability across a wider range of power conditions, enabling operation with low battery charge levels while still completing the boot-up process successfully.
Solution Approach 2:
The patent applies parameter changes by modifying power consumption parameters during the boot-up process. When power availability is insufficient, the system changes operational parameters to reduce power consumption, enabling boot-up to proceed with lower power thresholds. This parameter adjustment allows the system to overcome the power threshold limitation and achieve ease of operation across varying battery charge levels.
3Productivity
If the system continuously attempts to boot-up with insufficient power, then the boot-up process is repeatedly initiated, but power is wasted in infinite reset loops
Solution Approach 1:
The patent applies feedback by implementing a power threshold check that provides information about power availability before initiating boot-up. This feedback mechanism allows the system to make informed decisions about whether to proceed with boot-up or enter a low-power state, preventing futile boot-up attempts that would waste energy in infinite reset loops. The feedback ensures that boot-up is only initiated when power conditions are favorable, thereby improving productivity while minimizing energy loss.
Data Source
AI summary
Methods, systems, and devices for low-power boot-up for memory systems are described. A memory system may be configured to receive, over a first conductive path of a second communication interface, a first indication to boot-up a memory system and a first communication interface associated with the memory system, wherein the first communication interface includes a plurality of conductive paths; receive, over a second conductive path of the second communication interface, a second indication whether to perform a boot-up operation of the memory system using a low-power mode or a high-power mode based at least in part on receiving the first indication; and boot the memory system according to the low-power mode or the high-power mode based at least in part on receiving the second indication.