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`US 20090096413Al
`
`(19) United States
`02) Patent Application Publication
`Partovi et al.
`
`(JO) Pub. No.: US 2009/0096413 Al
`Apr. 16, 2009
`(43) Pub. Date:
`
`(54) SYSTEM Al~D METHOD FOR INDUCTlVE
`CHARGING OF PORTABLE DEVICES
`
`(75)
`
`Inventors:
`
`Afshin Partovi, S unnyvale, CA
`(US); Michael Sears, Ben Lomond.
`CA (US)
`
`Correspondence Address:
`FLIESLER MEYER LLP
`650 CALIFORNCA STRE ET, 14TH .FLOOR
`SA . FRANCISCO, CA 94108 ( US)
`
`(73) Assignee:
`
`MOJO MOBILITY, INC.,
`Sunnyvale, CA (US)
`
`(21) Appl. No.:
`
`12/116,876
`
`(22) Filed:
`
`May 7, 2008
`
`Related U.S. Application Data
`
`(63) Continuation-in-part of application No. 11/669,113,
`filed on Jan. 30, 2007.
`
`(60) Provisional app lication No. 60/763,816, filed on Jan.
`31, 2006, provisional application No. 60/8 I 0,262,
`filed on Jun. 1, 2006, provisional application No.
`60/810.298. filed on Jun. I, 2006, provisional applica(cid:173)
`tion No. 60/868,674, filed on Dec. 5, 2006, provisional
`application No. 60/9 I 6,748, filed on May 8, 2007,
`provisional application No. 60/952,835, filed on Jul.
`30, 2007, provisional application No. 61 /012,922,
`
`filed on Dec. 12. 2007, provisional application No.
`61/0 12,924, filed on Dec. 12, 2007, provisional appli(cid:173)
`cation No. 61/015,606. filed on Dec.20. 2007. provi(cid:173)
`sional application No. 61/043,027, filed on Apr. 7,
`2008.
`
`Publication Classification
`
`(51)
`
`lnt. Cl.
`H OU 7100
`(2006.01)
`(52) U.S. Cl . ........................................................ 320/108
`
`(57)
`
`ABSTRACT
`
`A system and method for variable power transfer in an induc(cid:173)
`tive charging or power system. In accordance with an
`el1lbodil1lent tbe system comprises a pad or similar base unit
`that contains a primary, which creates an alternating magnetic
`field. A receiver comprises a means for receiving the energy
`from the alternating magnetic field from tbe pad and trans(cid:173)
`ferring it to a mobile device, banery, or other device. In
`accordance with various embodiments, additional features
`can be incorporated into the system to provide greater power
`transfer efficiency, and to allow the system to be easily modi(cid:173)
`fied for applications that have different power requirements.
`These include variations in the material used to manufact11re
`the primary and/or the receiver coils; modified circuit designs
`to be used on the primary and/or receiver side; and additional
`circuits and components that perfunn specialized tasks, such
`as 111obile device or battery identification, aud a utomatic volt(cid:173)
`age or power-selling for d ifferent devices or batteries.
`
`110,
`
`112
`
`"""-Charger 116
`
`118~
`
`126
`
`120 Receiver../ 114
`.......-----t ~---- -0 lout
`
`+
`
`128
`
`122
`
`Ex.1006
`APPLE INC. / Page 1 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 1 of 50
`
`US 2009/0096413 Al
`
`100~
`
`104
`
`104
`
`FIG~ 1
`
`112
`
`"""'--Charger 116
`
`120 Receiver/ 114
`--~----+~~ 1
`
`out
`
`i
`
`Vout
`
`128
`
`122
`
`lo
`Ns
`
`126
`
`FIG. 2
`
`Ex.1006
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`

`Patent Application Publication Apr. 16, 2009 Sheet 2 of 50
`
`US 2009/0096413 Al
`
`FIG. 3
`
`150 ~
`
`I
`I
`I
`I
`I
`I
`I
`
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`144
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`152
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`
`Ex.1006
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`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 3 of 50
`
`US 2009/0096413 Al
`
`160,
`
`162
`
`FIG. 5
`
`110,
`
`Capacitor
`·ri 1 ?6
`ec 11er
`R
`t
`174
`
`Regulator
`180
`
`+
`
`172
`
`182
`
`FIG. 6
`
`Ex.1006
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`
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`

`Patent Application Publication Apr. 16, 2009 Sheet 4 of 50
`
`US 2009/0096413 Al
`
`190~
`
`200,
`
`Shell/Cover
`194::)
`
`Replacement
`Shell/Cover
`210:::),
`l..._ _ _ _ _ _ c:;_..__,
`Device"i
`;::::j
`192
`..__ _______ ~ Power Jack
`196
`
`212
`)
`
`With Original Shell
`
`Shell With Receiver
`
`FIG. 7
`
`220~
`
`Interconnects
`for Power/Data
`226
`
`228
`
`Communications/
`Storage Unit
`234
`
`230
`
`FIG. 8
`
`Ex.1006
`APPLE INC. / Page 5 of 88
`
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`

`Patent Application Publication Apr. 16, 2009 Sheet 5 of 50
`
`US 2009/0096413 Al
`
`240~
`
`Charger
`
`Receiver
`
`lo
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`
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`Ex.1006
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`
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`Patent Application Publication Apr. 16, 2009 Sheet 6 of 50
`
`US 2009/0096413 Al
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`290~
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`
`FIG. 12
`
`Ex.1006
`APPLE INC. / Page 7 of 88
`
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`

`Patent Application Publication Apr. 16, 2009 Sheet 7 of 50
`
`US 2009/0096413 Al
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`312
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`314
`
`FIG. 13
`
`320,
`
`324
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`FIG. 14
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`Ex.1006
`APPLE INC. / Page 8 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 8 of 50
`
`US 2009/0096413 Al
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`330~
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`rm
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`334
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`332
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`FIG. 15
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`□ 340
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`Ex.1006
`APPLE INC. / Page 9 of 88
`
`

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`Patent Application Publication Apr. 16, 2009 Sheet 9 of 50
`
`US 2009/0096413 Al
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`350~
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`FIG. 17
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`358
`
`357
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`FIG.18
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`Ex.1006
`APPLE INC. / Page 10 of 88
`
`

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`Patent Application Publication Apr. 16, 2009 Sheet 10 of 50
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`Ex.1006
`APPLE INC. / Page 11 of 88
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`Patent Application Publication
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`Apr. 16, 2009 Sheet 11 of 50
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`Ex.1006
`APPLE INC. / Page 12 of 88
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`Patent Application Publication Apr. 16, 2009 Sheet 12 of 50
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`Ex.1006
`APPLE INC. / Page 13 of 88
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`Patent Application Publication Apr. 16, 2009 Sheet 13 of 50
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`Ex.1006
`APPLE INC. / Page 14 of 88
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`Patent Application Publication Apr. 16, 2009 Sheet 14 of 50
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`APPLE INC. / Page 15 of 88
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`Patent Application Publication Apr. 16, 2009 Sheet 15 of SO
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`Ex.1006
`APPLE INC. / Page 16 of 88
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`Time (µs)
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`Ex.1006
`APPLE INC. / Page 17 of 88
`
`

`

`Patent Application Publication
`
`Apr. 16, 2009 Sheet 17 of 50
`
`US 2009/0096413 Al
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`580~
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`Ex.1006
`APPLE INC. / Page 18 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 18 of 50
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`APPLE INC. / Page 19 of 88
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`Patent Application Publication Apr. 16, 2009 Sheet 19 of 50
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`Ex.1006
`APPLE INC. / Page 20 of 88
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`Ex.1006
`APPLE INC. / Page 21 of 88
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`Ex.1006
`APPLE INC. / Page 22 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 22 of 50
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`Ex.1006
`APPLE INC. / Page 23 of 88
`
`

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`Receiver
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`Vin
`
`Ex.1006
`APPLE INC. / Page 24 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 24 of 50
`
`US 2009/0096413 Al
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`Ex.1006
`APPLE INC. / Page 25 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 25 of SO US 2009/0096413 Al
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`. - -~
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`Ex.1006
`APPLE INC. / Page 26 of 88
`
`

`

`Patent Application Publication
`
`Apr. 16, 2009 Sheet 26 of 50
`
`US 2009/0096413 Al
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`740
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`FIG. 37
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`Ex.1006
`APPLE INC. / Page 27 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 27 of 50
`
`US 2009/0096413 Al
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`Ex.1006
`APPLE INC. / Page 28 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 28 of 50
`
`US 2009/0096413 Al
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`790 ~
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`FIG. 39
`
`Ex.1006
`APPLE INC. / Page 29 of 88
`
`

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`
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`
`Ex.1006
`APPLE INC. / Page 30 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 30 of 50
`
`US 2009/0096413 Al
`
`796
`
`FIG. 41
`
`Ex.1006
`APPLE INC. / Page 31 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 31 of 50
`
`US 2009/0096413 Al
`
`800~
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`FIG. 42
`
`Ex.1006
`APPLE INC. / Page 32 of 88
`
`

`

`Patent Application Publication
`
`Apr. 16, 2009 Sheet 32 of 50
`
`US 2009/0096413 Al
`
`FIG. 43
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`FIG. 44
`
`Ex.1006
`APPLE INC. / Page 33 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 33 of 50
`
`US 2009/0096413 Al
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`Ex.1006
`APPLE INC. / Page 34 of 88
`
`

`

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`Ex.1006
`APPLE INC. / Page 35 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 35 of SO
`
`US 2009/0096413 Al
`
`FIG. 47
`
`Deposited Magnetic
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`FIG. 48
`
`Ex.1006
`APPLE INC. / Page 36 of 88
`
`

`

`~
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`
`Receiver
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`
`Ex.1006
`APPLE INC. / Page 37 of 88
`
`

`

`> ....
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`.t'//1'////////////////i"~////.i'/////~///~,;,;,~.,.,~., ... ~;,.,~ ... ~ ... ;,t;;J; .. .,.;,~;;,,,..,,,,,,;,~.,;,.,~.,;,~~ .. ~;,.,~.,t;;!/,~///////ll~✓,z.,;,✓ll✓ll/N/////✓h•+-----i; spacer !
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`
`Ex.1006
`APPLE INC. / Page 38 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 38 of 50
`
`US 2009/0096413 Al
`
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`I
`
`····· ···-··· ···· ·
`
`I
`.. :.....
`
`I
`····•···
`
`:
`
`)
`I
`.. --;· · ···· • ·····~········ -·
`
`aso,
`
`FIG. 51
`
`350 -- - - - - - - -1-0- 70 Micron Copper
`-<>- 7 Micron Copper
`300 ................................................................................................................................................................ .
`
`ta 250 --· - - - - - - - - - - - - - - - _ _ , _ _ _ .
`
`"O -5 200 -
`a 5 150 ·
`
`ti)
`.Q
`<( 100 -+-- - - - - - - - - - - - - - - - r - 1 - - ----1
`
`0
`1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 1.E+08 1.E+09
`Frequency (Hz)
`
`FIG. 52
`
`Ex.1006
`APPLE INC. / Page 39 of 88
`
`

`

`Patent Application Publication
`
`Apr. 16, 2009 Sheet 39 of 50
`
`US 2009/0096413 Al
`
`854~
`120 __ _ _ _ _ _ .,.. -<>- 10 Micron Copper.,..__ __
`--o- 5 Micron Copper
`-ts- 1 Micron Copper
`
`-al
`-C:
`
`"0
`
`80 ....... -··································································-················· ·-··········································· -········· ..................... .
`
`0
`
`40 ···· ····································································································································
`
`20 - t--- - - - - - - - - --<
`
`0 -i;,Ji-~~i,....~~~0-~liiiiiiiiic;-...a;:::::;.._;:;:__...,.... __ _.
`1E+03 1.E+04 1E+05 1E+06 1E+07 1E+08 1E+09
`Frequency (Hz)
`
`856~
`
`120 --------<>- 10 micron Aluminium.-----(cid:173)
`--0- 5 micron Aluminium
`-ts- 1 micron Aluminium
`100-.-- - - - -1_ _ _ _ _ _ _ _ _ _,--,---.
`
`"0 80-- - - - - - - - - - - - - - - - - --
`
`-al
`-
`
`60 ···· ~·- - - ·
`
`0 o--o-~r--.....o--()-~~g;;;~~;_..._cc__.,..... _ __,,
`1E+03 1E+04 1E+05 1E+06 1E+07 1E+08 1E+09
`
`Frequency (Hz)
`
`FIG. 53
`
`Ex.1006
`APPLE INC. / Page 40 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 40 of 50
`
`US 2009/0096413 Al
`
`860~
`100 ~~----------1 --Aluminum
`------- Copper
`95 ..................................... ··.--.,._ ................................................................................................................. .
`
`90-+---- - - -- -~-.....----------
`
`'•
`
`85 ·•·· ·······-································································ ................ ·-•,,·~.,,._······················································
`
`80 ........................................................................................................................... ·-~, .. ···································
`
`E
`t/J
`s:::
`(tJ
`~
`
`?O~i-------i- . - . - - - - - - - - - - - -~
`0
`5
`10
`15
`20
`Layer Thickness (~tm)
`
`864~
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`FIG. 54
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`FIG. 55
`
`Ex.1006
`APPLE INC. / Page 41 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 41 of 50
`
`US 2009/0096413 Al
`
`868~ Sectioned Alignment Sectioned Alignment Sectioned Alignment
`Magnets
`Magnets
`Magnets
`...... ,_-:_-_-:_-::..-::..-=-.--
`
`Sectioned Alignment
`Magnets
`
`Sectioned Alignment
`Magnets
`
`Sectioned Alignment
`Magnets
`FIG. 56
`
`872 ~
`Pairs of Alignment
`Magnets
`
`Pairs of Alignment
`Magnets
`
`Pairs of Alignment
`Magnets
`
`l?::f=:;::;.>, I
`
`i
`L.
`
`Pairs of Alignment
`Magnets
`
`Pairs of Alignment
`Magnets
`
`Pairs of Alignment
`Magnets
`
`FIG. 57
`
`Ex.1006
`APPLE INC. / Page 42 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 42 of 50
`
`US 2009/0096413 Al
`
`i62[
`
`~~~, 1' ',,
`
`., II
`'i54
`'-960
`Battery
`
`964
`
`Electron ics~=---Battery
`
`• DJ
`~ • ~
`
`Solar Cell
`<"f76
`
`' Electronics
`
`- Cordless Mojo
`
`Solar Cells
`
`PCB
`
`Battery
`
`FIG. 59
`
`Ex.1006
`APPLE INC. / Page 43 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 43 of 50
`
`US 2009/0096413 Al
`
`482
`
`Solar Cells
`
`Coils
`
`Electronics
`PCB
`
`Electronics
`
`'{84
`
`FtG.60
`
`'t94../
`
`FIG. 6\
`
`Ex.1006
`APPLE INC. / Page 44 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 44 of 50
`
`US 2009/0096413 Al
`
`1000~
`
`1002~
`
`···· ........................ " ..... · ... ,., ......... :::···--
`
`1008~
`
`r
`
`FIG. 62
`
`'
`
`0
`
`'-
`
`,I
`
`I __ I
`
`FIG. 63
`
`1012~
`
`FIG. 64
`
`Ex.1006
`APPLE INC. / Page 45 of 88
`
`

`

`> ....
`.... w
`....
`\0 --0
`
`0,.,
`\0
`0
`
`0
`0
`N
`{J)
`d
`
`0 -.
`
`0
`(JI
`
`tt> -....
`{J) =(cid:173)
`
`(JI
`
`tt>
`
`\0
`0
`0
`N
`$1'-
`:i ....
`> "C
`
`s::,:) -o· =
`"'0 = O' = r"l
`=
`s::,:) -o·
`s::,:) -tt> = -t
`
`;:;·
`'E.
`
`"'0
`
`Mobile Device
`
`Receiver
`
`V
`
`,,.....
`
`-.
`
`I~,~ IA~
`
`r{)l1 !Charger
`
`3
`
`conv.
`DC/DC
`
`~ 4.A
`
`p
`
`C
`
`FIG. 65
`
`Inductive Charger Case
`
`~
`
`MCU
`
`-
`
`I -
`
`Current Sense
`I
`
`..,.,
`
`Inductive Charger
`
`Base
`
`U1
`
`~.
`
`MCU
`
`-
`
`Curren~
`
`121~
`I
`
`02?
`
`li;:I
`I
`
`_J
`
`I
`Switch I
`I
`
`1
`
`,B~t.l
`
`Charger
`
`~p
`
`~4T
`
`u~._J5 £
`
`Drive
`FET I
`
`-.
`
`Common Mode R
`
`Filter
`
`3
`
`Vin
`
`1020,
`
`Ex.1006
`APPLE INC. / Page 46 of 88
`
`

`

`Patent Application Publication
`
`Apr. 16, 2009 Sheet 46 of 50
`
`US 2009/0096413 Al
`
`1030~
`
`Metal Layer
`Surrounding Coil
`
`PCB Coil
`
`FIG. 66
`
`1040~
`
`Metal Layer
`Surrounding Coil
`
`PCB Coil
`
`FIG. 67
`
`Ex.1006
`APPLE INC. / Page 47 of 88
`
`

`

`Patent Application Publication
`
`Apr. 16, 2009 Sheet 47 of 50
`
`US 2009/0096413 Al
`
`1050~
`
`1056~
`
`Gap in Metal
`Layer and/or Coil
`
`Metal Layer
`Surrounding Coil
`
`Inductive
`Coil
`
`Metal Layer
`Surrounding Coil
`
`Inductive
`Coil
`
`FIG. 68
`
`Areas with
`No Metal
`
`1060~
`
`Metal Layer
`Surrounding Coils
`I
`j
`
`/
`
`/
`
`I
`
`I
`
`I
`
`• · .• · · • · . . . •
`
`• . . . . . . . . .
`
`• . . . . . . . . .
`
`. .
`
`. . . . . . . . .. .. : •~ A . . .. . . .. ' • · · .
`
`. . . .. . ..
`
`' • :
`
`• • • • •
`
`·
`
`• • . , • · . · ·· • · . •
`
`· · · · · · 0 0 • • • • • •
`
`• •
`
`• • • • ••
`
`· • . · · · ~ · . . . . .. . ..
`
`. . . . . . . .. . .. , . .. . . .. .. . . . ..
`
`• • . ..
`
`. . . . . · • • 0. I' • ' ••• •• •
`
`•:• •,• .. ;. ·: ••.·•::, · ........ :"'::. •:, .. ·: :, •:, ·:-::, · ..... • ..... ·: ,,.•,.::, ·: ...... •:-::. •,·, -. •: :·, •:,'•,•,:;, •: .... • ....... -:,.::-·.• ... · ... :·,; ...... -.. · :. ·: .. ···•: ;. · .. ·.• .. :, ..... , •::- ... ;.•:-... ·-:: ...... ..
`
`I
`I
`
`I
`
`I
`I
`
`I
`
`..... :. ·• • ..... , : ., ·- , ·:-· :. ·:-•• - : : , •:. • . ..... ·-. • • • •,',> ;. • .. ..... : • '·• ·:,::. • •••• •:: , •:. ·.·•· :, • •• • •• ·:,•:. ·• ••..... :. ·.•·.··: ••• • •• • . ...... •: • . .... ~- •: . •• ' ·: ~:. • •...... :. ' · • ·:-:::-. • •• •• •·.:-.
`I
`I
`•. ,,:i::-•, ............... •:.'•::-••••. ·:-•·· ..• •::- ........... •, ... ·.•· •. •.• '• .. :,,; •:.'• •:. '•"·::,•:••· •::·•:-•.• •::- •• ···.-:::•: . .• •::-::- ........... ·:-•. •::-•.• ................... •,•;. •,•:.•::-.••.
`I
`I
`
`FIG. 69
`
`Ex.1006
`APPLE INC. / Page 48 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 48 of 50
`
`US 2009/0096413 Al
`
`1070~
`
`Metal Layer
`Surrounding
`Coil
`
`Gap in
`Metal LAyer
`
`/
`
`PCB Coil
`
`1076 - ~
`
`Gap in Metal Layer
`and/or Magnet
`
`\
`
`PCB Coil
`
`Electronics
`
`1oao,
`
`Alignment
`Magnets
`
`FIG. 70
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`
`Alignment
`Magnets
`FIG. 71
`
`Alignment
`Magnets
`
`Ex.1006
`APPLE INC. / Page 49 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 49 of 50
`
`US 2009/0096413 Al
`
`1090~
`
`Pairs of
`Alignment
`Magnets
`
`Pairs of
`Alignment
`Magnets
`
`Pairs of
`Alignment
`Magnets
`
`j(if~;~\I
`
`-,~- ----~- ·---~~
`
`•
`
`Pairs of
`Alignment
`Magnets
`
`Pairs of
`Alignment
`Magnets
`FIG. 72
`
`Pairs of
`Alignment
`Magnets
`
`1094- ~
`
`Ring
`Magnet
`
`PCB Coil
`
`1098
`----~
`
`Gap in Metal Layer
`and/or Magnet
`
`Ring
`Magnet
`
`PCB Coil
`
`Electronics
`
`Electronics
`
`'t ..
`
`.);
`,·
`
`'
`---:
`,:.
`
`• ~. : •
`
`··:;
`•,
`. ~-
`.
`. .. •i:···
`
`FIG. 73
`
`Ex.1006
`APPLE INC. / Page 50 of 88
`
`

`

`Patent Application Publication Apr. 16, 2009 Sheet 50 of 50
`
`US 2009/0096413 Al
`
`1100~
`
`Arc
`Magnets
`
`Battery or
`Rectangular
`Part
`
`PCB Coil
`
`Arc
`Magnets
`
`FIG. 74
`
`1120~
`
`' Bar
`
`Magnets
`
`Bar
`Magnets
`
`PCB
`Coil
`
`Gap in
`1126~
`Metal Layer Bar
`Bar
`Magnets PCB
`;
`Magnets
`Coil
`
`Electronics
`
`Electronics
`
`FIG. 75
`
`Ex.1006
`APPLE INC. / Page 51 of 88
`
`

`

`US 2009/0096413 Al
`
`Apr. 16, 2009
`
`SYSTEM AND l\iETHOD FOR INDUCTIVE
`CHARGING OF PORTABLE DEVICES
`
`CLAJM OF PRIORITY
`
`(0001] This application is a continuation-in-part of U.S.
`patent application Ser. No. 1 l/669,JJ3, filed Jan. 30, 2007,
`titled "INDUCTIVE POWER SOURCE AND CHARGING
`SYSTEM". which application claims the benefit of U.S. pro(cid:173)
`visional patent application 60/763,816, filed Jan. 3 I , 2006,
`titled "PORTABLE INDUCTNE POWER SOURCE": U.S.
`provisional patent application 60/8 10,262, filed Jun. 1, 2006,
`titled "MOBILE DEVICE, CHARGER,AND POWER SUP(cid:173)
`PLY"; U.S. provisional patent application 60/810.298, filed
`Jun. 1. 2006.
`titled "MOBILE DEVJCE, BATfERY,
`CHARGING SYSTEM, AND POWER SUPPLY"; and U .S.
`provisional patent application 60/868,674, filed Dec.5.2006.
`titled "SYSTEM FOR PROVIDING A PORTABLE INDUC(cid:173)
`TIVE POWER SOURCE"; this application also claims the
`benefit of U.S. provisional patent application 60/9 16,748,
`filed May 8, 2007, titled "CHARGING AND POWE RING
`MOBILE DEVICES, BATTERIES"; U.S. provisional patent
`application 60/952,835, filed Jul. 30. 2007, lilied "INDUC(cid:173)
`TIVE CHARGING OF PORTABLE DEVICES"; U.S. pro(cid:173)
`visional patent application 61/ 0 I 2,922, filed Dec. 12. 2007,
`titled "WIRELESS CHARGER WITH POSITION INSEN(cid:173)
`SITIVITY"; U.S. provisional patent application 61/012,924,
`filed Dec. 12, 2007, titled " CONTROL, REGULATION,
`AND COMMUNJCATlON lN CHARGERS"; U.S. provi(cid:173)
`sional patent application 61/0 15,606, filed Dec. 20, 2007,
`titled "PORTABLE INDUCTIVE POWER SOURCE": and
`U.S. provisional patent application 61/043,027, filed Apr. 7,
`2008,
`titled "INDUCTIVE POWER SOURCE AND
`CHARGING SYSTEM"; this application is also related to
`copending U.S. patent application Ser. No. I 1/757.067 filed
`Jun. 1. 2007. titled "POWER SOURCE, CHARGING SYS(cid:173)
`TEM, AND INDUCTIVE