Time scale computation system including complete and weighted ensemble definition
Patent 5155695 Issued on October 13, 1992. Estimated Expiration Date: 
June 15, 2010. 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.
June 15, 2010. 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 ReferencesMulti-antenna gas receiver for seismic survey vessels High accuracy frequency standard and clock system Patent #: 4899117 InventorAssigneeApplicationNo. 538898 filed on 06/15/1990US Classes:702/178, Timekeeping (e.g., clock, calendar, stopwatch)368/46, PLURAL TIMEPIECE SYSTEM OR SYSTEM DEVICE (E.G., PRIMARY OR SECONDARY CLOCKS)368/184REGULATING MEANSExaminersPrimary: Shaw, Dale M.Assistant: Melnick, S. A. Attorney, Agent or FirmInternational ClassG04C 011/00AbstractAn improved system for providing ensemble time from an ensemble of oscillators is provided. In the system, a more complete ensemble definition permits a more accurate ensemble time to be calculated. The system takes into account at least weighted time and weighted frequency aspects or weighted time and weighted frequency aging aspects of each oscillator in the ensemble. Preferably, the system takes into account all of the weighted time aspects, weighted frequency aspect, and weighted frequency aging aspects for each oscillator in the ensemble. The weights with respect to each clock can be chosen to be either zero or any positive value such that the sum of the weights for each aspect sum to one. The system can be implemented using a Kalman approach.Other References
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