The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 01, 2003

Filed:

Jun. 01, 1999
Applicant:
Inventors:

Mattias Israelsson, Stockholm, SE;

Anders Emericks, Solna, SE;

Carl-Henrik Malmgren, Stockholm, SE;

Henrik Hellberg, Solna, SE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/00 ; H04M 9/00 ; H04M 9/08 ;
U.S. Cl.
CPC ...
H04M 1/00 ; H04M 9/00 ; H04M 9/08 ;
Abstract

Line circuits can be supplied with a first voltage or a second voltage of a lower absolute value. At least the second voltage is variable. The line voltages of at least active line circuits are measured, and possible values for the second voltage are prognosticated. It is determined which line circuits can be supplied with the respective possible value, and the power consumption of those line circuits is calculated using each possible value. For the line circuits which cannot be so supplied, the power consumption is calculated using the first voltage. For each possible value prognosticated for the second voltage, the total power consumptions are summed, and the value that gives the lowest total power consumption is selected as the second voltage. The line circuits are then supplied with the first voltage or the selected second voltage.


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