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.
Patent No.:
Date of Patent:
Mar. 05, 2002
Filed:
Aug. 21, 1998
Akhteruzzaman, Naperville, IL (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method for enhancing the stability associated with an individual telecommunications line interface circuit comprises measuring a phase angle between a battery voltage and an output voltage. The phase angle measurement is processed by a digital signal processor for synthesizing a comparator circuit to generate an output voltage if the phase angle is a value other than forty-five degrees (45°). The new output voltage is then applied to the line interface circuit and the phase angle is recalculated to determine if it is a closer approximation of 45°. In an alternative embodiment, a database including a plurality of output voltage and electrical parameter values is stored in the digital signal processor and indexed by measured phase angles between the battery voltage and the output voltage. If a phase angle other than 45° is measured, the measured phase angle is used to obtain a new output voltage and electrical parameters from the database. The new output voltage is generated by the digital signal processor so that the line interface circuit operates at a greater degree of stability.