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`U.S.PATENTS _
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`Name of Patentee or Applicant Pages,Columns,Lines where
`Kind
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`1
`
`3775659
`
`1973-11-27
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`Carlsen, ||
`
`
`
`2
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`EFS Web 2.1.17
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`INFORMATION DISCLOSURE
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`| 10254-US—CNT4 4214-01509
`
`5638540
`
`1997-06-10
`
`Aldous
`
`5651057
`
`1997-07-22
`
`Blood, et al.
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`5769877
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`Weimer, et al.
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`A w
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`Massman, et al
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`|\JD
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`6211649
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`2001 -04-03
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`|\J a
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`6252375
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`6255800
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`6283789
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`6397696
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`6668296
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`|\J|\J|\J|\JUItoN
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`4
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`26
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`6738856
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`27
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`7170259
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`2001-06-26
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`Richter, et al.
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`2001-07-03
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`Bork
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`B1
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`2001-09-04
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`Ogami
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`B1
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`2003-12-23
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`Dougherty, et al.
`
`B2
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`2004-05-18
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`Milley, et al.
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`B2
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`2007-01-30
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`Veselic
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`wo
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`lllllIlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
`
`(11)
`
`EP 0 684 680 B1
`
` )
`
`European Patent Office
`Office européen des brevets
`
`(1 9) 0
`
`(12)
`
`EUROPEAN PATENT SPECIFICATION
`
`(51)
`
`Int c|_6: H02J 7/00
`
`(45) Date of publication and mention
`of the grant of the patent:
`28.07.1999 Bulletin 1999/30
`
`(21) Application number: 95106552.3
`
`(22) Date of filing: 02.05.1995
`
`(54) Identification apparatus and method
`
`Verfahren und Vorrichtung zur Identifikation
`
`Procédé et appareil d’identification
`
`(84) Designated Contracting States:
`DE FR GB SE
`
`(30) Priority: 16.05.1994 Fl 942271
`
`(43) Date of publication of application:
`29.11.1995 Bulletin 1995/48
`
`(73) Proprietor: NOKIA MOBILE PHONES LTD.
`24101 8an (Fl)
`
`(72)
`
`Inventor: Hakkarainen, Kalle
`SF-24100 5an (Fl)
`
`(74) Representative: Frain, Timothy John et al
`Nokia IPR Department
`Nokia (UK) Limited
`Summit Avenue
`Southwood
`
`Farnborough Hampshire GU14 0NZ (GB)
`
`(56) References cited:
`EP-A- 0 038 877
`DE-A- 3 528 659
`
`EP-A- 0 409 226
`
`EP0684680B1
`
`
`
`Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give
`notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in
`a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art.
`99(1) European Patent Convention).
`—PetitionersExfi002
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`Printed by Jouve, 75001 PARIS (FR)
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`1
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`EP 0 684 680 B1
`
`2
`
`Description
`
`[0001] The present invention relates to identification
`apparatus and a method therefor. In particular, it relates
`to such apparatus and method for accessory devices of
`electronic devices such as portable telephones.
`[0002] There are many types of peripheral devices
`used with electronic devices. A particularly common ac-
`cessory device is a battery charger for portable devices
`such as portable telephones The present invention will
`now be discussed in terms of the state of the art and by
`way of example, with reference to battery chargers.
`[0003] There are a number of known methods for
`charging rechargeable batteries for portable devices,
`such as nickel-cadmium batteries. Many of these charg-
`ers require the removal of the batteries from the device
`to enable recharging. Removal of the batteries from the
`device is considered a drawback, since the device is out
`of operation during the recharging. However, a number
`of different chargers have been developed which can be
`attached to a battery powered device and the batteries
`charged in situ in the device. In this way, the functionality
`of the device can be maintained while charging the bat—
`teries. Even though the functionality of the device is
`maintained, a portable device, such as a mobile phone,
`is unavailable for operation in the manner intended, i.e.,
`as a portable device. Since chargers often recharge a
`battery using a fairly low charging current, the battery
`powered device is not available for portable operation
`for extended periods of time, such as eight hours or
`more during which time the batteries are being re-
`charged.
`[0004] Many battery powered devices, such as mobile
`phones, are extremely energy intensive, expending
`considerable amounts of power during the receive func—
`tions and more particularly during the transmit functions.
`Because of lengthy recharging times, "rapid“ chargers
`have been developed which can charge batteries fairly
`rapidly, for example in less than an hour as compared
`with the charging time of eight hours for previous battery
`chargers.
`In order to charge batteries rapidly, numerous
`[0005]
`problems had to be overcome. One of the most serious
`problems was overcharging of the batteries, resulting in
`turn in overheating of the batteries. Overheating may
`damage the battery case seals, resulting in rupturing of
`the battery case and in extreme instances in explosive
`rupturing of the battery case.
`[0006]
`In known "rapid“ battery chargers most of
`these problems have been solved in oneway or another,
`e.g., by monitoring given battery parameters, such as
`the charging rate of the battery, internal battery temper-
`atures or charge state of the battery.
`In some "rapid"
`chargers, attempts have been made to prevent over-
`charging of the batteries by utilizing timed charging of
`the battery. However. using these known solutions it is
`not always possible to prevent overcharging of batter-
`ies, for instance, when the charger type is not exactly a
`
`correctone or designed to be used with the battery being
`charged.
`[0007] Numerous different types of chargers are on
`the marketwhich comprise different charging capacities
`and charging parameters forcharging rechargeable bat-
`teries of portable devices. Some chargers can even be
`unsuitable,
`i.e., hazardous for the batteries. Conse-
`quently, portable devices should be able to somehow
`identify the charger and its properties. Similar problems
`exist for accessory devices generally for all types of
`electronic device, not just battery charges or portable
`telephones.
`[0008]
`EP-A-0 409 226 discloses an identification ap-
`paratus for a load comprising coupling means for cou-
`pling the load to a power supply and modulating means
`for modulating a signal according to the identity data
`from the load.
`
`[0009] According to a first aspect of the present inven-
`tion, there is provided identification apparatus for an ac-
`cessory device, comprising coupling means forcoupling
`the accessory device to a mobile telephone and modu-
`lation means for modulating a signal on the coupling
`means in accordance with identity data from the acces—
`sory device
`[0010] According to a second aspect of the present
`invention, there is provided an identification method for
`an accessory device, comprising transmitting an identity
`signal from the accessory device to a mobile telephone
`coupled thereto by modulating a signal transmitted ther-
`ebetween in accordance with identity data from the ac-
`cessory device.
`[0011] This has the advantage thatthe accessory de-
`vice can indicate to an electronic device to which it is
`
`connected which peripheral device it is. Thus, there is
`provided a solution to a problem of identifying accessory
`devices.
`
`the modulation
`In a preferred embodiment
`[0012]
`means comprises a switch means operable to activate
`and de-activate the coupling means.
`[0013]
`Preferably, the identification apparatus further
`comprises a bit generator or corresponding charger for
`generating the identity data.
`[0014]
`Suitably,
`there is provided control means
`adopted to control the modulation means in accordance
`with the identity data for superimposing a pulse ratio,
`pulse length, pulse count or the like signal on the signal
`on the coupling means.
`there is provided timing
`[0015] Advantageously,
`means for determining a time during which the modula-
`tion means is operable, in particular the timing means
`comprises a timer and a switch operable in accordance
`with the timer to decouple the identity data from the con-
`trol and/or modulation means.
`
`the switch means comprises a
`[0016] Optionally,
`switching transistor or field effect transistor.
`[0017]
`Identification may be implemented after a cer-
`tain start-up period, before operation, e.g. charging, is
`started or in the initial stage of operation of the acces-
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
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`3
`
`EP 0 684 680 B1
`
`4
`
`sory device.
`[0018]
`Embodiments in accordance with the invention
`are now described, by way of example only, and with
`reference to the appended drawings in which:
`
`Additionally, the modulation of the charging voltage may
`comprise varying the charging voltage as well as switch-
`ing it on or off.
`
`1 shows a diagrammatic illustration of the im-
`Fig.
`plementation of apparatus in accordance with the
`invention,
`
`Fig. 2 shows a more detailed diagrammatic illustra-
`tion of the apparatus of Fig.
`1
`
`In a device in accordance with the invention a
`[0019]
`battery charger for a transportable device transmits an
`identification code for the charger via a charging cable,
`by switching the charging voltage on and off using a cer-
`tain pulse ratio or pulse length or pulse count. Such iden-
`tification can be implemented after a certain start-up
`time or before starting an actual charging routine It can
`also be carried out in the initial stage of charging after
`having switched the charging on or entered a charging
`routine.
`
`Fig. 1 shows an implementation of an embod—
`[0020]
`iment in accordance with the invention. The identifica—
`
`tion of the charger is formed by using bit generator 1
`from which the identification is taken via switching block
`2, controlled by timing block 3, to control block 4 of a
`pulse width modulator. A switching transistor orfield ef-
`fect transistorfunctions as switch 8 and takes a charging
`voltage containing the identification as a modulation im-
`posed thereon, via inductance 6 to the output of the
`charger. Timing block 3 can also operate to control
`switch 8 to stay on after the pulse identification has been
`transmitted from the charger. The main circuit compris-
`es, in a known manner, parallel diode 5 and parallel ca—
`pacitor 7 coupled to ground. The charging voltage may
`be the output of a DC/DC converter, the output of which
`is then switched on or off by switch 8.
`[0021]
`Fig. 2 shows a slightly more detailed diagram-
`matic illustration of the apparatus in accordance with the
`invention. The identification of the charger is formed by
`using logic NAND circuit 9 (an AND circuit having an
`inverting output), from where the identification is trans-
`mitted to control block 4 of the pulse width modulator.
`The resistances shown in Figure 2 are marked with
`numbers 10 and 11 and the capacitors are marked with
`numbers 12 and 13. A switching transistor orfield effect
`transistor functions as switch 8 and takes the charging
`voltage containing the identification via inductance 6 to
`the output of the charger. The pulse identification is
`formed until capacitor 12 is charged, switch 8 being left
`switched on thereafter.
`
`In view of the foregoing description it will be
`[0022]
`evident to a person skilled in the art that various modi-
`fications may be made within the scope of the invention.
`For example, the accessory device need not be a bat-
`tery charger but could be some other accessory, and the
`electronic device need not be just a portable telephone.
`
`Claims
`
`1.
`
`10
`
`15
`
`2.
`
`20
`
`3.
`
`4.
`
`25
`
`Identification apparatus for an accessory device,
`comprising coupling means for coupling the acces-
`sory device to a mobile telephone and modulation
`means for modulating a signal on the coupling
`means in accordance with identity data from the ac—
`cessory device.
`
`Identification apparatus according to claim 1,
`wherein the modulation means comprises a switch
`means operable to activate and de-activate the cou-
`pling means.
`
`Identification apparatus according to claim 1 or
`claim 2, further comprising a bit generator or corre-
`sponding charger for generating the identity data.
`
`Identification apparatus according to any preceding
`claim, wherein there is provided control means
`adapted to control the modulation means in accord-
`ance with the identity data for superimposing a
`pulse ratio, pulse length, pulse count or the like sig-
`nal on the signal on the coupling means.
`
`Identification apparatus according to any preceding
`claim, wherein there is provided timing means for
`determining a time during which the modulation
`means is operable.
`
`Identification apparatus according to claim 5,
`wherein the timing means comprises a timer and a
`switch operable in accordance with the timer to de-
`couple the identity data from the control and/or
`modulation means.
`
`Identification apparatus according to any preceding
`claim, wherein the switch means comprises a
`switching transistor or field effect transistor.
`
`Identification apparatus according to claim 1, fur-
`ther comprising:
`
`-
`-
`-
`
`a logic NAND circuit,
`resistance, and
`capacitance, wherein
`
`5.
`
`6.
`
`7.
`
`8.
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`the identity data is formed by using the logic NAND
`circuit, from where the identity data is taken to con-
`trol block for a pulse width modulator.
`
`9. A battery charger comprising identification appara-
`tus according to any preceding claim, wherein the
`
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`EP 0 684 680 B1
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`coupling means is adapted to carry a charging volt—
`age, and the signal on the coupling means is a
`charging voltage.
`
`An identification method for an accessory device,
`comprising transmitting an identity signal from the
`accessory device to a mobile telephone coupled
`thereto by modulating a signal transmitted therebe-
`tween in accordance with identity data from the ac-
`cessory device.
`
`A method according to claim 10, wherein the signal
`is modulated by switching the signal on or off.
`
`10.
`
`11.
`
`Patentansprflche
`
`1.
`
`Identifikationsvorrichtung fUr ein Zusatzgerat, mit
`Kopplungsmitteln zur Kopplung des Zusatzgerats
`an ein Mobiltelefon, und Modulationsmitteln zur Mo-
`dulation eines Signals an den Kopplungsmitteln ge-
`maB Identitatsdaten von dem Zusatzgerat.
`
`ldentifikationsvorrichtung nach Anspruch 1, bei der
`die Modulationsmittel Schaltmittel enthalten, die zur
`Aktivierung und Deaktivierung der Kopplungsmittel
`betreibbar sind.
`
`Identifikationsvorrichtung nach Anspruch 1 oder 2,
`mit einem Bitgenerator oder einem korrespondie-
`renden Ladegerat zur Erzeugung der Identitatsda-
`ten.
`
`8.
`
`ldentifikationsvorrichtung nach Anspruch 1, mit:
`
`-
`-
`-
`
`einerNAND-Logikschaltung;
`einem Widerstand; und
`einer Kapazitat, wobei die Identitatsdaten unter
`Verwendung der NAND-Logikschaltung gebil-
`det werden, von wo aus die Identitatsdaten ei-
`nem Steuerblockfflr einen Pulsbreitenmodula-
`
`tor zugerhrt werden.
`
`9. Batterieladegerat mit einer ldentifikationsvorrich—
`tung nach irgendeinem der vorangegangenen An—
`sprUche, wobei die Kopplungsmittel zur Ubertra-
`gung einer Ladespannung vorgesehen sind, und
`das Signal an den Kopplungsmitteln eine Lade-
`spannung ist.
`
`10. Identifikationsverfahren fUr ein Zusatzgerat, mit ei-
`nem Schritt zur Ubertragung eines Identitatssignals
`vom Zusatzgerat an ein mit diesem gekoppeltes
`Mobiltelefon, und zwar mittels Modulation eines
`zwischen ihnen Ubertragenen Signals gemaB den
`Identitatsdaten vom Zusatzgerat.
`
`11. Verfahren nach Anspruch 10, bei dem das Signal
`moduliert wird,
`indem es ein- oder ausgeschaltet
`wird.
`
`10
`
`15
`
`20
`
`25
`
`30
`
`Revend ications
`
`ldentifikationsvorrichtung nach irgendeinem der
`vorangegangenen AnsprUche, bei der zur Steue—
`rung der Modulationsmittel gemaB den Identitats—
`daten Steuermittel bereitgestellt sind, um ein Puls-
`verhaltnis, eine Pulslange, eine Pulszahl oder ein
`ahnliches Signal mit dem Signal an den Kopplungs-
`mitteln zu Uberlagern.
`
`Identifikationsvorrichtung nach irgendeinem der
`vorangegangenen AnsprUche, bei der zur Bestim-
`mung einer Zeit wahrend der die Modulationsmittel
`betreibbar sind Zeitsteuerungsmittel vorgesehen
`sind.
`
`ldentifikationsvorrichtung nach Anspruch 5, bei der
`die Zeitsteuerungsmittel einen Zeitgeber und einen
`Schalter enthalten, der gemaB dem Zeitgeber be-
`treibbar ist, um die Identitatsdaten von den Steuer-
`und/oder Modulationsmitteln zu trennen.
`
`Identifikationsvorrichtung nach irgendeinem der
`vorangegangenen AnsprUche, bei der die Schalt-
`mittel einen Schalttransistor oder einen Feldef‘iekt-
`transistor enthalten.
`
`35
`
`40
`
`45
`
`50
`
`55
`
`1. Appareil d‘identification pour un dispositif auxiliaire,
`comprenant un moyen de couplage pour coupler le
`dispositif auxiliaire a un téléphone mobile et un
`moyen de modulation pour moduler un signal sur le
`moyen de couplage conformément a des données
`d‘identite a partir du dispositif auxiliaire.
`
`2. Appareil d‘identification selon la revendication 1,
`dans lequel le moyen de modulation comprend un
`moyen de commutation pouvant étre utilisé pour ac-
`tiver et désactiver le moyen de couplage.
`
`3. Appareil d'identification selon la revendication 1 ou
`la revendication 2, comprenant en outre un géné-
`rateur de bit ou un chargeur correspondant pourgé-
`nérer les données d‘identité.
`
`4. Appareil d‘identification selon l‘une quelconque des
`revendications precedentes, dans lequel il est pre-
`vu un moyen de contréle adapté pour contréler le
`moyen de modulation conformément aux données
`d‘identité pour superposer un rapport d‘impulsions,
`une longueur d'impulsion, un nombre d'impulsions
`ou un signal similaire sur le signal sur le moyen de
`couplage.
`
`5. Appareil d‘identification selon l‘une quelconque des
`
`Petitioners Ex. 1002
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`EP 0 684 680 B1
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`revendications précédentes, dans lequel il est pre—
`vu un moyen de mesure du temps pour determiner
`un temps pendant lequel le moyen de modulation
`est utilisable.
`
`Appareil d'identification selon Ia revendication 5,
`dans lequel le moyen de mesure du temps com-
`prend une horloge et un commutateur pouvant étre
`utilisé en accord avec l‘horloge pour découpler les
`données d‘identité a partir du moyen de contréle et/
`ou de modulation.
`
`Appareil d‘identitication selon l‘une quelconque des
`revendications précédentes, dans lequel le moyen
`de commutation comprend un transistor de commu-
`tation ou un transistor a effet de champ.
`
`Appareil d'identification selon Ia revendication 1,
`comprenant en outre :
`
`-
`-
`-
`
`un circuit logique NAND
`une resistance, et
`un condensateur, dans lequel
`
`les donnees d‘identité sont activees en utilisant le
`
`circuit logique NAND, a partir duquel les données
`d‘identité sont saisies pour contréler un bloc pour
`un modulateur de largeur d‘impulsion.
`
`Chargeurd'accumulateurs comprenant un appareil
`d‘identification selon l‘une quelconque des revendi-
`cations précédentes. dans lequel le moyen de cou-
`plage est adapté pour porter une tension de charge,
`et le signal sur le moyen de couplage est une ten-
`sion de charge.
`
`10.
`
`11.
`
`Méthode d‘identification pour un dispositif auxiliai-
`re, comprenant la transmission d‘un signal d‘identi-
`té depuis un dispositif auxiliaire vers un telephone
`mobile couple a celui-ci en modulant un signal
`transmis entre eux conformément a des données
`
`d'identité a partir du dispositif auxiliaire.
`
`Méthode selon la revendication 10, dans laquelle le
`signal est modulé en commutant le signal en posi-
`tion marche ou arrét.
`
`10
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`15
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`20
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`25
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`EP 0 684 680 B1
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`
`Petitioners Ex. 1002
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`Controlof
`
` thepulse
`
`modulator
`
`
`width
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`(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
`
`(19) World Intellectual Property Organization
`International Bureau
`
`(43) International Publication Date
`4 January 2001 (04.01.2001)
`
`
`
`llllll|||||||l||||||ll||ll|||||||I||l||||||||l|||ll|l|||||||||l|||||||||||||l|||
`
`(10) International Publication Number
`WO 01/01330 A1
`
`(51)
`
`(21)
`
`(22)
`
`International Patent Classification7:
`
`G06K 9/00
`
`International Application Number:
`
`PCT/US99/22709
`
`International Filing Date:
`
`1 October 1999 (01.10.1999)
`
`(25)
`
`Filing Language:
`
`(26)
`
`Publication Language:
`
`English
`
`English
`
`(74)
`
`(81)
`
`Agents: KESSLER, Edward, J. et al.; Sterne, Kessler,
`Goldstein & Fox P.L.L.C., Suite 600, 1100 New York Av—
`enue, N.W., Washington, DC 20005—3934 (US).
`
`Designated States (national): AE, AL, AM, AT, AU, AZ,
`BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK,
`DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL,
`IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU,
`LV, MD, MG, MK, MN, MW, MX, NO, NZ