Anatomy of mobile systems. Lin Zhong ELEC424, Fall 2010. Outline. Physical Integrated circuit Software Cost Power profile Administration. Physical profile: Case study. HP Jornada 928 Released in 2002 TI OMAP 710 133MHz 64MB RAM CompactFlash I 221 grams QVGA refective TFT display
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ELEC424, Fall 2010
Portable Electronics Product Design & Development, Bert Haskell, 2004
Which parts are most likely to become lighter?
Source: ICCAD’05, Bogdan Staszewski, TI
(graphics, e.g. OpenGL, user interfaces, e.g. Qt)
(Java virtual machine, .NET framework)
(System interface to peripheral devices)
(BIOS, fixed software in microcontrollers)
Source: PEPDD, Bert Haskell
Total cost: $170.5
$199 with AT&T plan
>$700 from ebay without plan
Software is really expensive!!!
iPAQ 4350, 2004
Audiovox 5600, 2004
A computer spends most of its energy in idle periods due to the human-computer speed mismatch
Display power significant
Power trace for Calculator on a Sharp Zaurus 5500
99% time and 95% energy spent waiting during interaction
Back lightings change
30-minute of streaming video will exhaust the battery
Verizon, Sprint, AT&T etc.
Samsung, LG, HTC, Moto,…
TI, ARM, MIPS (Digital), Qualcom