Power Management Controls
ENERGY STAR Monitor MOU, v3
• Introduce Active Power Criterion– watts ≤ 30 + 20 * megapixels
• Reduce / Consolidate Sleep (≤ 4 W)• Introduce Off Power (≤ 2 W)• Strongly Recommend UI Standards• ENERGY STAR / TCO meeting next week
Power Management Controls
Power Management Controls
Bruce NordmanLawrence Berkeley National Laboratory
[email protected]://eetd.LBL.gov/Controls
sponsor: California Energy CommissionPublic Interest Energy Research (PIER) Program
Power Management Controls
Overview
• Background• Energy
• Controls
• Scope
• Standard• Static
• Dynamic
• Future Issues
Power Management Controls
Office Equipment Energy UseAnnual Electricity (TWh/year)
No Power Management
Now (ENERGY STAR)
Potential(100% Enabling)
48.8
65.5
92.6
0 20 40 60 80 100
$2.2 billion
$1.3 billion
Power Management Controls
Problem
• Existing Power Management Controls are
• Hidden, Confusing, Absent
• Power Management Enabling Rates Low
Power Management Controls
Solution
• Create broadly similar interfaces for power/power management control across all office equipment and consumer electronics
• Accomplish this by creating a voluntary standard for interface elements
Power Management Controls
Office Equipment:The “Standby” Problem
• Suspend mode is know as standby mode under the Microsoft Windows 98 operating system. For systems with ACPI compliance, suspend mode is known as sleep mode (Dell)
• Stand-by mode - Fully ready to copy but not copying. (ASTM Copier Test Procedure)• “Stand-by - … an optional operating state of minimal power reduction…” (VESA
Standard)• “Standby power - The lowest power mode in which the appliance is plugged in…”
(LBNL-Leaking/Standby Electricity)• “Standby is… the lowest power state where the system is responsive to interrupts…”
(PowerPC Reference Platform)• “Suspend is currently ignored under Windows 95/98 and Windows 2000 because
terminology is ill-defined” (Microsoft)• “There is no distinction between Suspend in OnNow as there was previously under APM
definitions” (Microsoft)
Power Management Controls
Existing power-related ISO/IEC“Graphical Symbols For Use On Equipment”
Can you identify and define each of these?
Power Management Controls
Overall Plan
• Assess Existing Devices
• Develop New Standards (Voluntary)
• Market these to Institutions• Manufacturers (PAC)
• International Standards Organizations
• Industry Institutions
Power Management Controls
Topics: High Priority, #1
• Basic symbols and switches & buttons
• Basic indicators• Changing power states• Transition indicators• Underlying archetype of power
management behavior, including basic terms
Power Management Controls
Topics: High Priority, #2
• Controlled and controlling devices
• Remote indicators and controls
• Composite devices and diversity of low-power modes
• Power management ‘schemes’
• Behavior based on wake event type
• Linked behavior
• Interactions with non-power modes
Power Management Controls
Topics:Medium/Low Priority
• Disability• Culture• Temporary changes• System status after
power failure• Terminology
• Language• Batteries• Role of the term
“ENERGY STAR”• Self-monitoring• Miscellaneous
Power Management Controls
Three Basic StatesOn, Off, Sleep
• Within a state, device has consistent capability, behavior (e.g. state change)
• May have more states, but all mapped into forms of the basic three
Power Management Controls
The Term “Power”
• For indicators, switches/buttons
• Need standard translation
• Possible “international word” (voice)
Power Management Controls
Power Symbols
• Drop as a symbol.
• Change meaning of from “Standby” to “Power”– Symbols and/or Indicators
Power Management Controls
Indicators
• Use Green / Amber / Off for On / Sleep / Off
• Blinking only for transitions or non-power meanings
• Possible standard (optional) audio indications
Power Management Controls
SleepMetaphor and Symbol
• “Sleep” is most compelling metaphor, and has clear extensions (e.g. “waking up”).
• is already common and seems clear
Power Management Controls
Device Behavior(Dynamic)
• Taxonomy of device types
• User expectations
• Device feedback
• Consistency
• Remote controls, indicators
Power Management Controls
• for Power button / indicator
• Green / Amber / Off for power indicator– Blinking for transitions
• Dimming?
• Accessibility?
Bottom Line for Displays
Power Management Controls
Emerging Issues (Displays)
• Display as portal– OLD: input PC Display– NEW: input Display PC– Multiple PCs
• Remote PCs (closet)– Indicator / Power button on display
Power Management Controls
Emerging Issues (Displays)
• More input devices in monitor– Tablet PCs, etc.– Occupancy / Proximity sensors– Voice
• Secondary displays– Adjacent– Distant
Power Management Controls
Questions/Comments
http://eetd.LBL.gov/Controls
Bruce [email protected]
510-486-7089
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