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EP 2 567 298 A1

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(43) Date of publication: 13.03.2013 Bulletin 2013/11 (21) Application number: 11714335.4 (22) Date of filing: 15.04.2011

(51) International Patent Classification (IPC):  G05F 1/56(2006.01) H05B 33/08(2006.01) (86) International application number: PCT/EP2011/056046 (87) International publication number: WO 2011/138154 (10.11.2011 Gazette 2011/45)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 04.05.2010 EP 10161845 (71) Applicant: Rohm Co., Ltd. Kyoto-shi, Kyoto 615-8585 (JP)	(72) Inventors: LOOKMAN, Paulo 47877 Willich-Münchheide (DE) FRONEN, Rob 47877 Willich-Münchheide (DE) CHIDA, Taisuke 47877 Willich-Münchheide (DE) (74) Representative: Barth, Stephan Manuel  Isarpatent Friedrichstraße 31 80801 München 80801 München (DE)