Method of maintaining access authorization using a bulletin board communication resource
Patent 5553315 Issued on September 3, 1996. Estimated Expiration Date: 
November 8, 2014. 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.
November 8, 2014. 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 ReferencesBulletin board resource for communication system access Communication device and system capable of automatic programmable energizing Paging receiver in which an announcing unit is automatically controlled at a particular time instant Apparatus and method for operating a wireless local area network having power conservation Patent #: 5465392 InventorsAssigneeApplicationNo. 336367 filed on 11/08/1994US Classes:455/509, Channel allocation455/411, Privacy, lock-out, or authentication455/528Lockout or busy-idle signalingExaminersPrimary: Eisenzopf, Reinhard J.Assistant: Banks-Harold, Marsha D. Attorney, Agent or FirmInternational ClassH04B 007/00AbstractA bulletin board coordinates the service authorization for other communication systems. Service authorizations are periodically updated, with authorized communication units returning to the bulletin board at pre-scheduled times to receive the updates that extend service authorization for authorized communication services. The bulletin board transmits authorization information on known communication resources at predetermined times known only by authorized communication units. | |
