Masatoshi Honji

US Patent:

20130293151, Nov 7, 2013

Filed:

Mar 13, 2013

Appl. No.:

13/799885

Inventors:

Voravit Puvanakijjakorn - Beverly MA, US
Masatoshi Honji - Westborough MA, US
Anne Janet Milliez - Brighton MA, US

Assignee:

OSRAM SYLVANIA Inc. - Davners MA

International Classification:

H05B 33/08

US Classification:

315297

Abstract:

Systems and methods for driving solid state light sources are provided. A first drive circuit is configured to generate a drive current to cause a first solid state light source load and a second solid state light source load to illuminate. A feedback and control circuit is configured to receive feedback from the first solid state light source load and to control the drive current through the first solid state light source load based on the feedback. A second drive circuit is configured to control the drive current through the second solid state light source load. A master controller is configured to provide a first input to the feedback and control circuit to control the drive current through the first solid state light source load and a second input to the second drive circuit to control the drive current through the second solid state light source load.

US Patent:

20190208605, Jul 4, 2019

Filed:

Sep 15, 2017

Appl. No.:

16/331785

Inventors:

- Wilmington MA, US
Masatoshi Honji - Westborough MA, US
Ranjit Jayabalan - Boxborough MA, US
Sivakumar Thangavelu - Westford MA, US

Assignee:

OSRAM SYLVANIA Inc. - Wilmington MA

International Classification:

H05B 37/02
H05B 37/03

Abstract:

A network power distribution system includes a plurality of networked digitally controlled lighting devices and a network powered network controller. Each of the digitally controlled lighting devices includes a device driver that coupled to the network. The device driver is selectively transitionable between a first operating mode in which the device driver provides a first voltage and a first current to the network and a second operating mode where the driver does not provide a voltage or current to the network. The network controller autonomously determines a number of device drivers that, in the first operating mode, at least meet the current draw of the network controller. The network controller then transitions the determined number of device drivers to the first operating mode. The network controller monitors the device drivers for faults and autonomously swaps device drivers to maintain network power.

US Patent:

20150319820, Nov 5, 2015

Filed:

Jul 16, 2015

Appl. No.:

14/800772

Inventors:

Voravit Puvanakijjakorn - Beverly MA, US
Masatoshi Honji - Westborough MA, US
Anne Janet Milliez - Brighton MA, US

Assignee:

OSRAM SYLVANIA INC. - Danvers MA

International Classification:

H05B 33/08

Abstract:

Systems and methods for driving solid state light sources are provided. A first drive circuit is configured to generate a drive current to cause a first solid state light source load and a second solid state light source load to illuminate. A feedback and control circuit is configured to receive feedback from the first solid state light source load and to control the drive current through the first solid state light source load based on the feedback. A second drive circuit is configured to control the drive current through the second solid state light source load. A master controller is configured to provide a first input to the feedback and control circuit to control the drive current through the first solid state light source load and a second input to the second drive circuit to control the drive current through the second solid state light source load.