Demand-assignment multiple access control system
Patent 4995096 Issued on February 19, 1991. Estimated Expiration Date: 
May 10, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 10, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesRepeatered, multi-channel fiber optic communication network having fault isolation system Status monitor SS-TDMA technique telecommunication satellite systems Patent #: 4763129 InventorAssigneeApplicationNo. 352686 filed on 05/10/1989US Classes:455/12.1, Space satellite455/20With frequency conversionExaminersPrimary: Eisenzopf, Reinhard J.Assistant: Kuntz, Curtis Attorney, Agent or FirmInternational ClassH04B 007/185Foreign Application Priority Data1988-01-11 JPAbstractA DAMA control system for an SCPC satellite communication system includes first and second control stations which can independently perform centralized DAMA control through corresponding common signaling channels, a large number of slave stations capable of receiving data through either common signaling channel, and a satellite station. While one control station performs DAMA control, the other control station performs a backup operation. When one control station loses a control function, the other control station takes over centralized DAMA control. | |
