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:
Aug. 09, 2005
Filed:
Feb. 09, 2001
Jianwei Bei, Rockville, MD (US);
Mehrdad Abrishami, Gaithersburg, MD (US);
Richard Meyers, Montgomery Village, MD (US);
JianWei Bei, Rockville, MD (US);
Mehrdad Abrishami, Gaithersburg, MD (US);
Richard Meyers, Montgomery Village, MD (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A technique for detection and bypass of unnecessary modulation/demodulation and compression/decompression of Group 3 fax, in a telecommunication network having more than one pair, or 'tandem,' Group 3 fax relay gateways. Detection and the effective removal of a Group 3 fax tandem reduces end-to-end processing delays of the facsimile signal, and improves performance of the Group 3 fax communication. The invention uses frequencies normally used for voice information (such as V.21 channelfrequencies) to detect tandem fax relay gateways and effectively remove unnecessary relay gateways.