Overview

1. Power Management ControlsProject Update, August 2001Bruce NordmanLawrence Berkeley National LaboratoryBNordman@LBL.govhttp://eetd.LBL.gov/Controlssponsor: California Energy CommissionPublic Interest Energy Research (PIER) Program

2. Overview • Recap of May, 2000 / Project Background • Activities / Results Since • Professional Advisory Committee, Institutional Review, Updated Project Plan, Device Assessment, User Interface Literature, Tentative Recommendations • Next Steps • Questions / Comments

3. Synopsis Goal:To save energy, increase enabling rates of existing power management capability in office equipment. Method: Make power management more consistent and intuitive to users across all office equipment (via a voluntary standard).

4. Standard PM Interface Elements • Terms • Symbols/Icons • Indicators • Operating Metaphors Scope: Office Equipment(& Consumer Electronics)

5. Institutional Review“Who is Involved in Power Management Controls” • Standards / Standards Committees (ISO/IEC) • Graphical Symbols for Use on Equipment • Indicator Lights • Others • Labeling Programs (e.g. ENERGY STAR) • Trade Associations (e.g. ITIC) • Manufacturers • Technology Initiatives / Protocols

6. Provides project with Guidance, Review, Credibility Compaq Hewlett-Packard IBM Intel Microsoft Ricoh Samsung Sony Sun ITIC ENERGY STAR Professional Advisory Committee (PAC)

7. Basic symbols and switches & buttons Basic indicators Changing power states Transition indicators Underlying archetype of power management behavior, including basic terms Topics: High Priority, #1

8. 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 Topics: High Priority, #2

9. Disability Culture Temporary changes System status after power failure Terminology Miscellaneous Language Batteries Role of the term “ENERGY STAR” Self-monitoring Topics: Medium / Low Priority

10. Project Rationale Existing Designs Approach Design Principles Metaphor Modes General UI Lit. — not specific to power controls Interactions / Transitions Indicator Lights Icons Norman / Macintosh Literature Insights

11. Initial Recommendations • Three basic power states: On, Off, Sleep • “Power” term (switch / indicator) • Change the international standard symbols for on/off, standby, and sleep • Green / Amber / Off for power indicators • Sleep metaphor (and moon)

12. Three Basic States On, 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 • “Hibernate” problematic, but tentatively a form of Off

13. The Term “Power” • For indicators, switches/buttons • Need standard translation • Possible “international word” (voice)

14. Power Symbols • Drop as a symbol. • Change meaning of from “Standby” to “Power” • and too similar. • Recommendation is most consistent with current usage on products.

15. Indicators • Use Green / Amber / Off for On / Sleep / Off • Blinking only for transitions or non-power meanings • Possible standard (optional) audio indications • Cyberspace?

16. Sleep - Metaphor and Symbol • “Sleep” is most compelling metaphor, and has clear extensions (e.g. “waking up”). • is already common and seems clear

17. PC Sample State Diagram

18. Next Steps • More devices • Other topics • Outreach, esp. designers • Testing

19. Questions / Comments • Process • Recommendations