Automatic time zone adjustment of portable receiver
July 23, 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 ReferencesElectronic timepiece with time zone change features Electronic timepiece radio Liquid crystal display device for world time wristwatch Multiple frequency message system Radio controlled timepiece World time watch Watch pager system and communication protocol Radio signal controlled digital clock Pager based information system Time display device Patent #: 4884254 InventorsAssigneeApplicationNo. 554958 filed on 07/23/1990US Classes:340/825.49, Location indication340/7.27, Zoned340/7.41, Over the air340/7.55, Display368/21, PLURAL TIME ZONES368/47With wireless synchronizationExaminersPrimary: Yusko, Donald J.Assistant: Weissman, Peter S. Attorney, Agent or FirmInternational ClassesH04Q 007/00G08B 005/22 G04C 011/00 AbstractA portable receiver has a time of day clock and receives a signal indicative of the location of the portable receiver. The portable receiver has a memory which has a plurality of locations with corresponding time zones. Upon reception of the location signal, the receiver determines the time zone of the location and the time zone of the time of day clock. The time of day clock is then adjusted to correspond to the time zone of the location. The location signal may also be used to adjust the operating frequency of the receiver.Other References
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