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New Scenarios for Portable Media Usage

Explore the latest technologies and their impact on portable HDD requirements, including video playback, WMA Lossless, portable DRM, and photo storage. Discover how these advancements will drive capacity, transfer rate, and power requirements. Stay ahead of the curve in the world of portable media centers!

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New Scenarios for Portable Media Usage

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  1. New Scenarios forPortable Media Usage David Proctor Hardware Lead Microsoft Portable Media Centers

  2. New Technologies • The Microsoft Portable Media Centers support several key technologies that will have a significant effect on portable HDD requirements • Video playback • Windows Media Audio Lossless (WMA Lossless) • Portable Digital Rights Management (Portable DRM) • Photo storage • Future Portable Media Centers may support • Video recording • Wireless Network • These technologies will drive requirements for • Capacity • Transfer Rate • Power

  3. Video playback • Portable Media Centers today support • 800 Kbit/sec WMV9 QVGA • Portable Media Centers by 2007 will support • ~3 Mbit/sec WMV9 Standard Definition TV (VGA/D1) • ~8 Mbit/sec WMV9 High Definition TV • Adoption of TV recording to PC and online Movie download services are growing as fast as .mp3 use was growing 5 years ago • 20 hrs of TV or 10 movies • 8 GBytes today • 80 GBytes by 2007

  4. WMA Lossless • WMA Lossless is a true lossless CD quality format • Compresses CD quality .WAV files 2x – 3x • High bit rate – ~700,000 bit/sec • Greater than 4x typical MP3 bit rate • Windows Media Player 10 includes support for ripping CDs to WMA Lossless • Portable Media Centers are the first portable devices to support WMA Lossless playback • 1,000 songs • 4 GBytes today • 16 GBytes by 2007

  5. Portable Digital Rights Management • Portable DRM allows you to take your subscription content with you • Now you can fill your 10,000 song portable audio player legally without paying $10,000 • For <$20/month you can get access to a service’s entire music library • With Portable DRM you may re-synch 10,000 songs every time you connect

  6. Photo Storage • 5 Mega-Pixel cameras will produce ~3MByte photos • A slide show set to 5 seconds per pictures will require 4.8 Mbit/sec • This is 6x faster than today’s video and almost as fast as High Def video • >1,000 photos (3 GBytes) will be common • 10,000 photos (30 GBytes) reasonable over a 5 year period

  7. HDD Requirements • Portable music player HDDs from 2001 to 2004 • 5 GBytes in 2001 to 40 GBytes in 2004 • 1.8” in 2001 to 1.0” in 2004 • Requirements for HDDs in 2007 • Music scenarios will improve • Video and other new scenarios will grow • Fundamentals need to improve • Cost, Power, Size, Reliability

  8. Capacity Requirements • Typical media lover in 2007 • 1,000 purchased songs in WMA Lossless – 24 GBytes • 10,000 subscription songs in 128Kbps WMA – 43 GBytes • 40 hours of Standard Definition TV/Videos – 54 GBytes • 1,000 Photos – 3 GBytes • TOTAL = 124 GBytes • Anything less requires the user to pick and choose what to take with them and what to leave on their desktop • Power user in 2007 • 2,000 purchased songs, 10,000 photos, recorded Hi-Def videos and TV may have more than 300GBytes!

  9. Transfer Rate Requirements • The music sync scenario today • Sync all your music once when device is first purchased • Sync 1 new album occasionally • Songs are ~4 Mbytes each • 20Mbit/sec to 80Mbit/sec is acceptable • The sync scenario with Portable DRM • Sync 10,000 songs every week ~40GBytes • 80Mbit/sec requires > 1 hour • The video sync scenario • Sync 4 hours of TV from last night ~6GBytes • 80Mbit/sec requires > 10 minutes

  10. Transfer Rate for Playback • Playing back 800Kbps today uses < 5% of the system bus • 95% is needed to keep video playing glitch free • 2007 video will require 10x data and still need to leave enough system bus bandwidth for video to play glitch free

  11. Power Requirements • Playing back 800Kbps today, HDD is on ~ 5% of the time • Total system power is ~ 1.20 Watts • Only 0.05 Watts (5% of 1.00 Watt) is HDD • 2007 video will require 10x data – 8Mbit/sec • HDD will need to support 160Mbit/sec sustained over 32MByte buffer in order to keep same impact on system power • Spin-up • A significant portion of the buffer fill time is disk spin up. This is power wasted because no data is being transferred.

  12. Closing Thoughts • Competition for HDDs • Is it Flash memory? • 4Gbyte removable cards for ~$99 in 2007 • Or is it wireless? • When high speed wireless access is ubiquitous, why have a HDD when I can stream from my home PC or a service over wireless internet? • Wi-Fi hotspots are growing fast • WiMax will ship in laptops by 2006 • Cell Phone standard data rates growing fast

  13. Thank You

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