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:
Feb. 11, 2003
Filed:
Nov. 13, 2000
Applicant:
Inventors:
Reinhart K. Pildner, Brampton, CA;
Fabio J. D. Almeida, Mississauga, CA;
Assignee:
Digital Security Controls Ltd., Concord, US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/104 ;
U.S. Cl.
CPC ...
H04M 1/104 ;
Abstract
A high frequency bypass circuit is advantageously used in combination with a security system control panel. The bypass circuit divides telephone signals provided to the circuit into a low frequency DC signal and a high frequency AC signal, typically used for data transfer. The DC signal is provided to the security system alarm control panel and the high frequency AC signal bypasses the control panel, and is connected to the private telephone system. Conventional phones on the private telephone system can be disconnected by the control panel while any high frequency signal continues uninterrupted.