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:
May. 11, 1999
Filed:
Jan. 02, 1997
LTEL Corporation, Ohmiya, JP;
ITT Canon Co., Ltd., Zama, JP;
Showa Electric Wire & Cable Co., Ltd., Kawasaki, JP;
Abstract
An optical wireless communication method and apparatus that uses Manchester code via a connector connected with a personal computer. The Manchester data from the computer are converted to NRZ transmission data to be temporarily stored and read out. A frame of the read out data is appended with a head leader identifying a sender and end data at the head and end of the frame to be converted to the DMI transmission optical data. The optical data inserted between the head leader and END data are receivable being distinguished from the optical signal of the sender and optical noises. The DMI entitative data removed from the head leader and end data are converted to data of the Manchester code in the reverse course to the sender to be delivered as the Manchester data via a connector. As the optical data with the head leader and end data are distinguishable from the optical signal of the sender and optical noises, high sensitive optical receivers are available.