Apparatus and methods for recording time intervals
Patent 4346718 Issued on August 31, 1982. Estimated Expiration Date: 
August 31, 1999. 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.
August 31, 1999. 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 References T926014 4090505 Cardiac monitor with rate limit means Patent #: 4096854 InventorAssigneeApplicationNo. 06/012111 filed on 02/14/1979US Classes:600/523, Signal display or recording346/33ME, Medical environment346/94Register character printing, dotting or punchingExaminersPrimary: Pellegrino, Stephen C.Assistant: Jaworski, Francis J. Attorney, Agent or FirmInternational ClassesA61B 5/024 (20060101)A61B 5/0432 (20060101) A61B 5/0245 (20060101) G07C 1/00 (20060101) Foreign Application Priority Data1978-02-22 GBAbstractA time interval recorder stores the magnitude of time intervals between events, e.g. heartbeats, over a period. The data is stored as a sequence of pairs of numbers representing respectively the magnitude of a time interval and the number of successive occurrences of the same time interval. The recorder comprises a digital timer, a comparator, a counter and a digital store. The timer provides a digital indication of each successive time interval which is compared in the comparator with the immediately previous digital indication. If there is equality then the counter is incremented. If there is non-equality then the count is stored in the store together with the digital value of the previous time interval and the counter is then zeroed. The store may also store digital indicators of elapsed time in the same sequence of stored numbers.Other References
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