Squelch Filtration Circuit Limits False Wakeups
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Solution Overview
Problem
As integrated circuit (IC) fabrication advances, increased functionality leads to higher heat generation, which can damage IC chips and limit their usage, necessitating reduced power consumption to prevent thermal damage and extend battery life in portable devices, while also addressing cooling and power issues in non-portable systems.
Innovation Solution
Implementing a squelch filtration circuit that uses multiple pulses during a select time period to indicate a wakeup event, reducing false wakeups and subsequent unnecessary power consumption and heat dissipation, with programmable pulse number and duration to adapt to hardware behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional functionality is integrated onto a single IC chip, then device capabilities are improved, but heat generation increases causing thermal damage and limiting usage
Solution Approach 1:
The system segments functionality into active and low-power states, allowing different functional blocks to be independently controlled. Components are divided into those that remain active and those that can enter low-power mode, enabling selective power management that reduces overall heat generation while maintaining essential device capabilities.
Solution Approach 2:
The system implements periodic switching between active and low-power states for various functional blocks. By periodically activating components only when needed and keeping them in low-power states otherwise, the system reduces average heat generation while maintaining full functionality when required, thus resolving the contradiction between device capabilities and thermal management.
2Adaptability or versatility
If additional functionality is integrated onto a single IC chip, then device capabilities are improved, but power consumption increases reducing battery life
Solution Approach 1:
The system segments the IC chip into multiple functional blocks that can be independently powered. By dividing the chip into active and low-power domains, the system can maintain full device capabilities when needed while consuming minimal power during idle periods, thus extending battery life without sacrificing functionality.
Solution Approach 2:
The system discards power consumption for non-essential functional blocks during low-activity periods by placing them in low-power states. When these blocks are needed, their functionality is recovered by activating them from the low-power state. This approach allows the system to maintain full capabilities while significantly reducing average power consumption to extend battery life.
3Adaptability or versatility
If signal switching is increased to add functionality, then device capabilities are improved, but heat generation increases causing thermal damage
Solution Approach 1:
The system implements periodic activation of functional blocks, keeping them in low-power states with minimal signal switching until needed. By activating components only when required and maintaining them in low-power states otherwise, the system reduces heat generation from signal switching while preserving full device capabilities when activated.
Data Source
AI summary
Methods and apparatus relating squelch filtration to limit false wakeups are described. In one embodiment, a squelch logic generates a wakeup event for an agent based on occurrence of a number of pulses (originating from another agent) during a time period. Other embodiments are also disclosed.