Patents by Inventor Raj Dayal Natarajan

Raj Dayal Natarajan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ambient lighting control system
    Patent number: 9480127
    Abstract: In one embodiment there is provided an ambient lighting control system 1 comprising a controller (2) and a sensor node (3a). The sensor node (3a) comprises an arrangement including a light energy collecting element (8) such as a solar cell, an energy storage element (9) and a transmitter (11). The collecting element (8) charges the storage element (9). The transmitter (11) is arranged to transmit signals to the controller (2) using energy stored by the energy storage element (9), wherein the number of signals provided during a time interval to the controller (2) is proportional to a light intensity at the light energy collecting element (8). The controller (2) may thus output a control signal C for controlling an amount of ambient lighting, wherein the control signal is based on the determined number of received signals.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: October 25, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Bastiaan De Groot, Raj Dayal Natarajan, Henricus Antonius Gerardus Van Vugt
  • Ambient lighting control system
    Publication number: 20140217261
    Abstract: In one embodiment there is provided an ambient lighting control system 1 comprising a controller (2) and a sensor node (3a). The sensor node (3a) comprises an arrangement including a light energy collecting element (8) such as a solar cell, an energy storage element (9) and a transmitter (11). The collecting element (8) charges the storage element (9). The transmitter (11) is arranged to transmit signals to the controller (2) using energy stored by the energy storage element (9), wherein the number of signals provided during a time interval to the controller (2) is proportional to a light intensity at the light energy collecting element (8). The controller (2) may thus output a control signal C for controlling an amount of ambient lighting, wherein the control signal is based on the determined number of received signals.
    Type: Application
    Filed: September 4, 2012
    Publication date: August 7, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Bastiaan De Groot, Raj Dayal Natarajan, Henricus Antonius Gerardus Van Vugt