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:
Nov. 25, 1997
Filed:
Feb. 29, 1996
Applicant:
Inventor:
Richard David Greenblatt, Belmont, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379350 ; 379201 ; 379257 ; 379386 ; 379418 ;
Abstract
A method of and apparatus for providing compatible universal identification telephone protocols by generating predetermined unique audio sequences recognizable by the telephone user as defining standardized Audio Icon information and distinct from and separated from one another and other telephonically transmitted signals; sending and receiving such generated audio sequences on a public switched telephone network having paths the parameters of which fall within predetermined specified training sets, including modem performance standards; and assuring recognition and correct identification of such audio sequences conveyed along such paths.