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. 26, 1990
Filed:
Jul. 25, 1988
Applicant:
Inventors:
David M Motley, Santa Ana, CA (US);
John F Stockman, Costa Mesa, CA (US);
Assignee:
Hycom Incorporated, Irvine, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375 39 ; 375-8 ;
Abstract
4800 B/S full duplex operation of a frequency-multiplexing modem over the switched telephone network without cancellation is made possible by combining 900-baud, 32-state operation with a combination of analog filtering and raised cosine digital filtering and stop bit robbing.
Motley, David. (1990). Frequency multiplexed full duplex 4800 bps modem (U.S. Patent No. 4937839). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4937839
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile