Transcript Freescale Forum 2005

Green Remotes Technology
Victor Berrios
Business Development Manager
Senior Member of the Technical Staff
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Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2006.
Home Entertainment Control – Today with IR
Line of sight transmission
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Decades-old technology
Field of vision limitations
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Technology Challenge
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Plasma TV contains high frequency inverter that
obstructs IR signals
LCD back lighting saturates DTV IR receiver
DTVs field of vision
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Remote needs to be pointed at IR receiver in
equipment being controlled
IR diode placed near edge of TV which many times is
outside IR field of vision
Power consumption
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Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2006.
Multiple redundant transmissions for each command
Higher TX power required to avoid interference
created by plasma/LCD screens
Typically over 100mA required per IR transmission
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Home Entertainment Control – Today with RF
No line-of-sight or field of vision limitations
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Control components behind walls or in cabinets
Control over extended ranges
Faster more reliable communications
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Transmit commands until received
Many times faster response than IR
Enables enhanced user interfaces
Touchpad or pointing capability
Bi-directional capability
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More reliable communications
Send program guides, playlists stock quotes, etc to
remote/components
Allows for communications between devices
Over-the-air firmware updates possible
Remote locator
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2006.
802.15.4 RF consumes 25% of the power used by
IR solutions
802.15.4 selected for cost and interference
avoidance capabilities with benefit of IEEE
standard
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DSSS
CSMA-CCA
Allows for true interoperability between vendors
products
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Power Consumption Comparison – IR vs. RF
Total: 300 ms @ 75 mA (6.25 mAH)
100 ms @ 75 mA
100 ms @ 75 mA
100 ms @ 75 mA
Total: 6 ms @ 40 mA (0.067 mAH)
6 ms @ 40 mA
(2) Alkaline AA – 2850 mAH
(2) Alkaline AAA – 1150 mAH
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2006.
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Market Adoption Example: Sony
Sony Adopts RF Remote Control for New "BRAVIA"
Sony Corp. announced 15 new models of its LCD television "BRAVIA" Aug. 29, 2007.
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Of the 15 models release, 13 were accompanied by an RF remote control.
2 AA (1 Year Life)
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are
the property of their respective owners. © Freescale Semiconductor, Inc. 2006.
2 AAA (2 Years Life)
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