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. 17, 1999
Filed:
Jun. 23, 1997
Mark Eugene Schreiter, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of automatically adjusting the line speed for communication between a client having data communications equipment (DCE) and a server having data terminal equipment (DTE). A first connection is established between the client and the server at a first speed, and the client sends a first synchronous data link control (SDLC) frame that identifies a requested speed. The server than sends a second SDLC frame in response to the first SDLC frame, identifying a second speed, wherein the second speed is the smaller of the requested speed and a predetermined (maximum) speed. If the client determines to communicate at the second speed, it drops the first connection, establishes a second connection at the second speed, and sends a third SDLC frame at the second speed; the server then sends a fourth SDLC frame in response to the third SDLC frame at the second speed, to confirm the connection, and data transmission follows. If either the client or the server does not receive an SDLC frame at the second speed within a predetermined time, it drops the second connection and establishes a third connection using the first speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile