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:
Aug. 04, 1987
Filed:
Oct. 22, 1985
Toshihiro Shikama, Kamakura, JP;
Takahisa Ota, Tokyo, JP;
Michihiro Ishizaka, Kamakura, JP;
Hirofumi Kira, Kobe, JP;
Akira Horiguchi, Kobe, JP;
Yuji Kooi, Kamakura, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention relates to a time-division transmission method for a plurality of terminals connected to a looped transmission line, in which a plurality of slots being provided with regions, where three kinds: 'Free', 'Busy' or 'Neutral' of access control information are set, are made to circulate on the transmission line, so that when the transmission apparatus at the terminal having data to be transmitted receives a slot of 'Free', a necessary number of subsequent slots to the slot of 'Free' are continuously used to carry out data transmission, the access control information at the slot in use is changed to 'Busy', the access control information of a slot at the head of the slots not used is set to 'Free', and an access control information of a slot subsequent to the above slot is set to 'Neutral'. Such method is adopted to increase a net amount of the data to be transmitted and reduce the processing for division and assembly of the data to be transmitted, thereby enabling the transmission efficiency to be improved.