Invention Grant
- Patent Title: LED drive circuit, LED drive device, and LED drive system
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Application No.: US16480327Application Date: 2018-01-31
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Publication No.: US10820385B2Publication Date: 2020-10-27
- Inventor: Kenichi Fukumoto , Koji Katsura , Ryosuke Kanemitsu , Junichi Itai , Nobuaki Matsui , Seiji Nakashima , Kouji Miyamoto
- Applicant: ROHM CO., LTD.
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3312f97 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1fa6ed15
- International Application: PCT/JP2018/003238 WO 20180131
- International Announcement: WO2018/143282 WO 20180809
- Main IPC: H05B45/14
- IPC: H05B45/14 ; H05B45/24 ; H05B45/37 ; H05B45/44
Abstract:
An LED drive circuit drives an LED module. The LED module has a light-emitting diode, and an identification unit having characteristic information relating to light-emitting characteristics of the light-emitting diode. The LED drive circuit includes a detection unit and a drive circuit. The detection unit is provided for detecting characteristic information, and generates a detection signal that corresponds to the characteristic information. The drive circuit generates drive current by a drive signal supplied according to the characteristic information based on the detection signal, and supplies the drive current to drive the light-emitting diode.
Public/Granted literature
- US20190387591A1 LED DRIVE CIRCUIT, LED DRIVE DEVICE, AND LED DRIVE SYSTEM Public/Granted day:2019-12-19
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