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:
Sep. 18, 2001
Filed:
Dec. 22, 1997
Toshihiro Uota, Funabashi, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Throughput of data transmission is improved by efficiently retransmitting a requested frame between two terminals directly connected each other in a packetized data transmission system. Data is transmitted in frames, each of which is constructed of a flag sequence field for delimiting a frame, a forward information field including a number for identifying a frame, a backward information field containing a history of frame-numbers of correctly received frames, an information field including user data of a fixed length and a code for error-detection field for detecting an error of the received frame. With a frame correctly received, a receiving terminal updates a history of correctly received frame-numbers and sets it in a backward information field of a frame to be transmitted to a transmitting terminal. With a frame incorrectly received, history information for a precedent correct frame is set the backward information field of the frame.