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:
Oct. 11, 2005
Filed:
Jun. 15, 2001
Applicant:
Michael R. Sollins, Raleigh, NC (US);
Inventor:
Michael R. Sollins, Raleigh, NC (US);
Assignee:
ADC DSL Systems, Inc., Eden Prairie, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04M003/00 ;
U.S. Cl.
CPC ...
Abstract
A ring voltage generator uses values stored in random access memory to generate a train of pulses used to drive a voltage waveform to ring a telephone ringer. The values are stored in RAM, and are programmable by a user without requiring a change in the ring voltage generator design.