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Multiple-input electronic ballast with processor

  • US 8,111,008 B2
  • Filed: 07/15/2009
  • Issued: 02/07/2012
  • Est. Priority Date: 02/13/2004
  • Status: Expired due to Fees
First Claim
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1. A ballast for a gas discharge lamp comprising:

  • a processor for controlling a level of a ballast output signal in response to a plurality of ballast control signals, wherein;

    said processor controls said ballast output signal in accordance with a selected one of a plurality of predetermined control processes;

    each control process of said plurality of control process comprises a unique algorithm for controlling said ballast output signal; and

    parameters of said ballast output signal are determined in accordance with a sequence and priority of values of said ballast control signals;

    an inverter for receiving a processor output signal from said processor and providing said ballast output signal in response to said processor output signal; and

    a plurality of input terminals for receiving said plurality of ballast control signals, wherein;

    said plurality of ballast control signals is coupled to said processor via said input terminals; and

    at least one of said plurality of input terminals is a bidirectional terminal configured to receive and send control signals, from and to, at least one other ballast via an inter-coupled bidirectional interface.

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