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. 20, 1985
Filed:
Jul. 21, 1983
Applicant:
Inventors:
James C Stoffel, Rochester, NY (US);
Chander B Ramchandani, Potomac, MD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 85 ; 370 94 ; 3408255 ;
Abstract
Apparatus and method are described for a data communication network which has topological independence, low variance service time distributions, potentially guaranteed maximum time to transmit, easy expansion and high error tolerance. The network access control is fundamentally a permit (token) based system. This yields highly efficient utilization of the channel and powerful control over priorities on access to the network. In addition, a contention based scheme is provided to enable error recovery, startup, and restart to be fast and reliable.