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:
Apr. 13, 2004
Filed:
May. 06, 1999
Paul B. Kubista, West Concord, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus is provided for an Ethernet station that transmits blocks of Ethernet frames in datagrams utilizing a pointer at the beginning of the datagram, rather than interrupts at the beginning and end of each data frame. Hardware receives a pointer to the start of an IP datagram and is then prompted to transmit. Hardware forms the frame header and sends out the IP datagram as a series of frames with only one interrupts signaling the end of the datagram. As a transmission comes in to the receiving station, hardware will check first to see if this is part of an IP datagram currently being received. If not, the frame is stored in a new location. If it is part of a datagram that is currently being received, hardware will check an offset in the IP header to determine where the new frame should be placed so the IP datagram is assembled properly. An interrupt is generated as the final frame is received by the receiving station, thus eliminating multiple interrupts after each frame at both transmitting and receiving station.