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:
Jan. 26, 1993
Filed:
Jan. 31, 1991
Nobuo Shirai, Hino, JP;
Takami Kasasaku, Tokyo, JP;
Fujitsu Limited, , JP;
Abstract
A modem is connected to a terminal equipment and couples to another modem via a transmission line. The modem includes a data transmission and reception part for making data transmission and reception with the terminal equipment, and a modem part for determining a modulation technique, for modulating a transmission signal from the other modem. In addition, the modem includes a data compression and decompression part for determining a compression technique. The compression technique is used for compressing serial data from the data transmission and reception part before supplying the same to the modem part and for decompressing the compressed serial data from the modem part before supplying the same to the data transmission and reception part. The modem further includes a speed determining part, notified of a communication speed between the modem and the other modem determined from the modulation technique and a compression rate of the data compression technique for determining an optimum communication speed when the connection between the two modems is established. In addition, the modulation technique is determined and the data compression technique is determined, in response to outputs of the modem part and data compression and decompression part. The speed determining part notifies the data transmission and reception part of the optimum communication speed, and the data transmission and reception part makes data transmission and reception with the terminal equipment using the optimum communication speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile