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The Qi interface - design freedom and innovation
Menno Trefferson 23 October 2012
Transcript of The Qi interface - design freedom and innovation
Interoperability remains more than 100 members
all relevant industries http://www.wirelesspowerconsortium.com/ This product will work with other Qi products Qi on phone:
"this phone will work with all battery chargers that carry the logo" Have the product tested by an independent test lab that is authorized to certify Qi compliance. How does a test lab certify Qi compliance? Test labs use the Qi specification The Qi specifications set the minimum requirements that products must meet to make sure they are interoperable. Qi is an interface specification It is not a product specification! Minimize the rules needed to guarantee compatibility of all Qi transmitters and Qi receivers Maximize design freedom for developers of transmitters and receivers Design freedom allows product differentiation Access to patents promotes competition Design freedom allows products to target applications with special requirements:
automotive (avoiding interference with other wireless systems)
embedded (distance between coils can be increased up t0 40mm)
integrate with NFC (to combine payment systems with wireless charging) Design freedom leads to innovation and product differentiation Design freedom allows tradeoff between cost, user experience, efficiency, design Royalty-free patent licenses for low power receivers Patent licenses on RAND terms for transmitters and other receivers The members have agreed to license their patents on reasonable and non-discriminatory terms and conditions. Although none of the member companies have announced detailed license terms yet, the members agree that RAND terms and conditions will be determined such that they promote adoption of the Qi standard and rapid growth of the market. The members will not charge royalties for patents that are essential for implementing low power receivers. (*) This is an informal summary of the intellectual property rules of the consortium. The membership agreement (also called the Consortium Charter) has the details. A new transmitter product does not pass all compliance tests?
But it is interoperable with all current and future Qi receivers? The WPC has added 12 new transmitter designs to the Qi specification since the release of version 1.0 Design freedom promotes competition The WPC members compete in every part of the supply chain
test and certification services Low entry hurdles
The specification is publicly available
Product certification by a independent test labs
WPC membership costs only 10,000.- Euro per year The Qi specification is evolving Add this new transmitter design
to the Qi specification! WPC members compete in every part of the supply chain Qi on battery charger:
"this charger will work with all power receivers that carry the logo" Proprietary solutions have a hard time competing with a standard With magnetic alignment
Without magnetic alignment
Single coil transmitters
Coil array transmitters
Moving coil transmitters
Mains-powered transmitters Including a transmitter using magnetic resonance The Wireless Power Consortium is increasing power levels from 5 Watt to 120 Watt. Higher power levels The initial draft of the extension to 30 Watt is available for review and comment by the members. Many more in the pipeline CETECOM in Essen, Germany
DLS electronic systems in Wheeling IL, United States
National Technical Systems (NTS) in Culver City CA, United States
SGS Korea in Gunpo City, Korea
TÜV Rheinland in Korea
TÜV Rheinland in Taipei
UL in Japan The Authorized Qi Test labs are: