Invention Grant
- Patent Title: Control circuit and method for controlling light emitting diodes
- Patent Title (中): 控制电路和控制发光二极管的方法
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Application No.: US11477146Application Date: 2006-06-28
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Publication No.: US07768216B2Publication Date: 2010-08-03
- Inventor: Manfred Pauritsch
- Applicant: Manfred Pauritsch
- Applicant Address: AT Unterpremstaetten
- Assignee: Austriamicrosystems AG
- Current Assignee: Austriamicrosystems AG
- Current Assignee Address: AT Unterpremstaetten
- Agency: Fish & Richardson P.C.
- Main IPC: H05B37/02
- IPC: H05B37/02
Abstract:
A control circuit for controlling light emitting diodes comprises a switch for turning on or off a string of light emitting diodes. A combiner generates a control signal from a data signal and a noise signal. A sigma delta modulator receives the control signal and a clock signal with a clock period and generates a switching signal for controlling the switch.
Public/Granted literature
- US20080007497A1 Control circuit and method for controlling light emitting diodes Public/Granted day:2008-01-10
Information query
