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:
Jun. 18, 1996
Filed:
Nov. 14, 1995
Dale M Walsh, Golf, IL (US);
Andrew L Norrell, Nevada City, CA (US);
Donald C Balton, Skokie, IL (US);
Terrel L Jones, Des Plaines, IL (US);
Marc S Baum, Chicago, IL (US);
Robert C Suffern, Chicago, IL (US);
Christopher R Hansen, Grass Valley, CA (US);
Jeffery E Herman, Zion, IL (US);
Thanh Q Ngo, Chicago, IL (US);
U.S. Robotics, Inc., Skokie, IL (US);
Abstract
Apparatus and method for enabling bilateral transmission of digital data between a local area network and telephone company networks employing both analog and digital telephone lines. A modem modulates signals responsive to signals from a local area network representing an outgoing call to form digital telephone signals suitable for transmission by a telephone line and suitable for demodulation by receiving analog modems. A circuit switched time division multiplex bus transmits the digital telephone signals to the telephone line. The modem also demodulates incoming digital telephone signals to form digital network bus signals divided into packets. A packet bus transmits the digital network bus signals to a network interface which processes the signals and transmits them to the local area network.