US 2009/0021384 A1 · Method of Sampling a Modulated Signal Driven Channel

Abstract

An automated method of sampling an electrical condition of each of a plurality channels, the method comprising: driving each of the plurality of channels with a modulated signal; providing a settable flag associated with each of the plurality of channels; selecting one of the plurality of channels; identifying if the settable flag associated with the selected one of the plurality of channels is set; and in the event that the settable flag associated with the selected one of the plurality of channels is not set, and a function of the modulated signal of the selected one of the plurality of channels is active and stable: sampling an electrical condition of the selected one of the plurality of channels; and setting the provided settable flag associated with the selected one of the plurality of channels.

Claims25

Dependent claims

An automated method of sampling an electrical condition of each of a plurality of channels, the method comprising:

driving each of the plurality of channels with a modulated signal;
providing a settable flag associated with each of the plurality of channels;
selecting one of the plurality of channels;
identifying if said settable flag associated with said selected one of the plurality of channels is set;
and
in the event that said settable flag associated with said selected one of the plurality of channels is not set, and a function of said modulated signal of said selected one of the plurality of channels is active:
sampling an electrical condition of said selected one of the plurality of channels;
and
setting said provided settable flag associated with said selected one of the plurality of channels.

6 more elements

A circuitry for sampling an electrical condition of a plurality of channels, the circuitry comprising:

a control circuitry;
a plurality of modulated signal generators in communication with said control circuitry, each of said modulated signal generators outputting a modulated signal and a function of said modulated signal;
a plurality of settable flags in communication with said control circuitry;
and
a plurality of channel drivers, each of said plurality of channel drivers responsive to, and associated with, a particular one of said plurality of modulated signal generators and arranged to drive a particular channel responsive to said respective modulated signal,
said control circuitry being operative to:
associate each of said channel drivers with a particular one of said settable flags;
select one of said channel drivers;
identify, if said settable flag associated with said selected one of said channel drivers is set;
and
in the event said settable flag associated with said selected one of said channel driver is not set, and said function of said modulated signal associated with said selected one of said channel drivers is active:
sample an electrical condition of one of said selected one of said plurality of channel drivers and the particular channel associated therewith;
and
set said settable flag associated with said selected one of said channel drivers.

11 more elements

A light emitting diode string driver comprising:

a control circuitry;
a plurality of pulse width modulated electrical signals in communication with said control circuitry;
a plurality of settable flags in communication with said control circuitry;
and
a plurality of light emitting diode string drivers, each of said plurality of light emitting diode string drivers responsive to, and associated with, a particular one of said plurality of pulse width modulated electrical signals,
said control circuitry being operative to:
associate each of said channel drivers with a particular one of said settable flags;
select one of said channel drivers;
identify, if said settable flag associated with said selected one of said channel drivers is set;
identify, in the event said settable flag associated with said selected channel driver is not set, if said pulse width modulated electrical signal associated with said selected one of said channel drivers is active and stable;
and
in the event said settable flag associated with said selected channel driver is not set and said pulse width modulated electrical signal associated with said selected one of said channel drivers is active and stable,
sample an electrical condition of one of said selected one of said plurality of channel drivers and the particular channel associated therewith;
and
set said settable flag associated with said selected one of said channel drivers.

12 more elements

Dependencies are inferred from the claim text.

Method of Sampling a Modulated Signal Driven Channel

Life of this patent

Method of Sampling a Modulated Signal Driven Channel

Life of this patent

Abstract

Claims25