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Power Mode Definitions and User Interfaces. US TAG - TC 108 / October 4, 2002 Bruce Nordman Lawrence Berkeley National Laboratory http://eetd.LBL.gov/Controls. LBNL: What We Do. U.S. Department of Energy National Laboratory Related to TC 108: - PowerPoint PPT Presentation
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Power Mode Definitions and User Interfaces
US TAG - TC 108 / October 4, 2002Bruce Nordman
Lawrence Berkeley National Laboratory http://eetd.LBL.gov/Controls
Power Management Controls
LBNL: What We Do
U.S. Department of Energy National Laboratory
Related to TC 108:• Codes and Standard (Appliances)• ENERGY STAR Specifications (IT, CE)• 1-Watt Standby Power Initiative• TC 59: Standby Power Test Procedure• User Interface Standard
Power Management Controls
UI Background / Rationale
• Existing Power Management Controls:– Hidden, Confusing (Inconsistent), Absent
• Power Management Enabling Rates Low• Lots of Wasted Energy• Poor User Image of Energy Efficiency,
Product Quality
Power Management Controls
Office Equipment Energy(Annual Electricity — TWh/year)
48.8
65.5
92.6
0 20 40 60 80 100
No Power Management
Now (ENERGY STAR)
Potential(100% Enabling)
$1.3B
$1.9B
Power Management Controls
Solution
QuickTime™ and aGIF decompressorare needed to see this picture.• 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
• Institutionalize the standard through international standards, industry standards, and marketing to industry
• Expected Result: Increased enabling rates and use of existing power management capability
Power Management Controls
Existing power-related ISO/IEC “Graphical Symbols For Use On Equipment”
Few U.S. residents can identify and define many of these
Power Management Controls
Structure of Standard
• Static– Six principles: terms, symbols, indicators– Many overlap with existing standards
• Dynamic– Nine principles: behavior over time– More akin to design guidelines
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
Hibernate
• “Hibernate” is a form of “Off”
• Need a new term - perhaps “off”
Power Management Controls
Dynamic Behavior (1)
Use “power up” to mean turn on or wake up, and “power down” for turn off or go to sleep.
Use flashing green on the power indicator for powering up and flashing amber for powering down.
Provide optional audio indications for power state transitions.
Alternating green/amber can be used to mean error if red is not available.
Power Management Controls
Dynamic Behavior (2)The power button toggles between the two most common
power states.When a device is asleep, pressing the power button will
(usually) wake it up.Holding down a power button for an extended time will
trigger an emergency action.Usually, when a device is asleep, the input causing a
wake event should be discarded.Provide icons to show what types of input may be active.
Power Management Controls
Moon: Construction
This use of moon seems OK re: Islam
Power Management Controls
Implications
• Hardware• Protocols (e.g. ACPI, network)• Software (Operating Systems, Applications) • Labeling (ENERGY STAR, TCO)• Standards
– Existing (Symbols, Indicators, Safety, ???)– New (IEEE, general UI)
Power Management Controls
What TC 108 Can Do
• Endorse the merit of a user interface standard (w/ or w/o endorsing its content)
• Forward the interface standard to all appropriate committees and working groups– TC 3, TC 16, ISO 145, JTC1 35, ???
• Consider the terminology for TC 108 standards
Power Management Controls
Possible Discussion
• TC 108 future role• Safety aspects of power symbols and
indicators• IEEE standard role• Terminology
Power Management Controls
Power ModesPower modes occur in:• Consumer usage (colloquial, products)
• Internal Terminology (interfaces, protocols, etc.)
• ENERGY STAR Specifications• Standards (test procedures, UI definitions)
• Other Energy Policy (regulations, energy standards)
For each, may vary widely by product type– Office equipment, consumer electronics, etc.
Power Management Controls
Power Modes, cont.• We should strive towards harmonizing terms, metaphors, and definitions across usage contexts and device types• With fast evolution, test procedures need to anticipate
future products and technologies and be adaptable• With devices commonly connected, standards for the
information environment/context need to be part of any test procedures
Power Management Controls
Questions/Comments
Power Management Controls
PC Sample State Diagram
Power Management Controls
Power Management Controls
Colors
• Accessibility re: Color Deficiency
• Studies for Traffic Signal Lights
• Can specify LEDs that are accessible