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:
Feb. 23, 1999
Filed:
Jan. 08, 1997
Masanori Taketsugu, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
To enable data transmission without transmitting packer's serial numbers, a transmit serial number is incremented by one at a transmit site each time a serial numberless data packet is sent to a receive site, and a copy of the transmitted packet is stored in a transmit memory corresponding to the transmit serial number. The process is repeated so that a predetermined number of outstanding packets are transmitted. At the receive site, a receive serial number is incremented by one upon receipt of each packet and the packet is stored in a receive memory corresponding to the receive serial number. The receive site determines whether there is an error in the outstanding packets in the receive memory. If an error is found, the receive site sends a request packet containing the serial number of the packet in error to the transmit site. In response, the transmit site sends a replacement copy for the corrupted packet to the receive site which, in response, replaces the packet in error with the received copy. If no packet in error is found in the receive memory, the receive site transmits an acknowledgment to the transmit site. On receiving it, the transmit site repeats the transmission of the next sequence of outstanding serial numberless packets.