Sync Signal Sensing Controller for Peripheral Power Blocking
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Solution Overview
Problem
Computer peripherals continue to consume standby power even when a computer is in power saving mode or turned off, leading to unnecessary energy consumption.
Innovation Solution
A sync signal sensing controller detects the absence of H/V SYNC signals and controls a power switch to cut off power supply to peripherals, eliminating power consumption when the computer is in power saving mode or turned off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If computer peripherals are kept powered on to maintain readiness for immediate use, then response time and availability are improved, but standby power consumption increases
Solution Approach 1:
The system performs preliminary detection of computer power state through sync signal monitoring before actually cutting off peripheral power. The controller continuously monitors for the presence or absence of sync signals to determine when power cutoff should be activated, ensuring timely response while avoiding premature shutdowns.
Solution Approach 2:
The system establishes a feedback loop where the controller continuously monitors sync signal status and adjusts power supply accordingly. When sync signals are detected, power is supplied to peripherals; when sync signals are absent, power is cut off. This closed-loop control ensures peripherals are powered on only when actually needed.
2Loss of energy
If power is cut off to peripherals when computer is in power saving mode or turned off, then energy consumption is reduced to zero, but peripheral readiness and response time deteriorate
Solution Approach 1:
The system monitors sync signal status in advance to determine the appropriate timing for power cutoff. By detecting the absence of sync signals before actually cutting off power, the system ensures that peripherals are only shut down when the computer is truly in power saving mode or turned off, not during temporary disconnections or signal interruptions.
Solution Approach 2:
The controller continuously monitors sync signal presence and uses this feedback to dynamically control power supply. This ensures peripherals receive power when needed (when sync signals are present) and are cut off only when the computer is in power saving mode or turned off, maintaining reliable response while eliminating unnecessary power consumption.
3Measurement precision
If a power switch is added to control peripheral power supply based on sync signal status, then power management precision is improved, but device complexity increases
Solution Approach 1:
The controller that monitors sync signals is given a second function by integrating power control capabilities. Instead of adding a completely separate power management system, the existing controller is enhanced to perform both signal monitoring and power switching functions, reducing overall system complexity while maintaining precise power management.
Solution Approach 2:
The patent combines the sync signal monitoring function and power control function into a single integrated controller. By merging these functions, the system avoids adding separate complex power management hardware while achieving precise power state detection and control through the unified controller.
Data Source
AI summary
The present invention relates to an apparatus for blocking standby power of computer peripheral devices, comprising: a synchronization signal sensing control unit which senses the existence of horizontal and vertical synchronization signals provided to a monitor from a computer body, and outputs a switching control signal according to the sensed result; and a power switching unit which is provided with external power and situated on a power supply path for supplying power to the computer peripheral devices, and has a structure adapted for conducting or blocking the corresponding path according to the switching control signal.