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:
Nov. 01, 2011
Filed:
Jan. 26, 2006
Hitoshi Naoe, Kitakatsuragi-gun, JP;
Fumihiro Fukae, Sakurai, JP;
Koji Sakai, Osaka, JP;
Shohei Ohsawa, Tenri, JP;
Hitoshi Naoe, Kitakatsuragi-gun, JP;
Fumihiro Fukae, Sakurai, JP;
Koji Sakai, Osaka, JP;
Shohei Ohsawa, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention is a network layer protocol used for free-space optical transmission utilizing an LED or LD as a light source. In order to connect to a device, the network layer issues a connection request command (LAP_con_req) to a lower layer when the network layer has received a connection request command (LM_con_req) from an upper layer. Furthermore, when the network layer has received a connection confirmation command reception notification (LAP_con_conf) from the lower layer, the network layer issues a connection confirmation command reception notification (LM_con_conf) to the upper layer without issuing a data transfer request command to the lower layer. Accordingly, the invention provides a network layer protocol with which time for a connection or disconnection is reduced.