Time maintenance and display in a time keeping system including a time zone boundary
First Claim
Patent Images
1. A method of time keeping comprising:
- transmitting a time of day reference by radio signal in association with a given time zone identification;
receiving said time of day reference and time zone identification at a time keeping device, said time keeping device maintaining a time zone preference indicator;
comparing at said time keeping device said time zone preference and said time zone identification; and
offsetting for subsequent time keeping said time of day reference according to said comparing step.
6 Assignments
0 Petitions
Accused Products
Abstract
In a time keeping system providing time of day by radio signal to remote time keeping devices, the transmitted time of day is provided in association with a given time zone identification. The time keeping devices receiving the time of day reference and the time zone identification include a time zone preference identification. By comparing the time zone preference and the time zone identification transmitted, the time keeping device can, when necessary, offset the received time of day value according to user preference for display relative to a preferred time zone.
69 Citations
15 Claims
-
1. A method of time keeping comprising:
-
transmitting a time of day reference by radio signal in association with a given time zone identification; receiving said time of day reference and time zone identification at a time keeping device, said time keeping device maintaining a time zone preference indicator; comparing at said time keeping device said time zone preference and said time zone identification; and offsetting for subsequent time keeping said time of day reference according to said comparing step. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A time keeping system comprising:
-
a radio signal transmission system broadcasting a plurality of time of day references within a reception zone including a time zone boundary, each time of day reference including identification of a given time zone; and at least one radio signal receiving device receiving a selected one of said time of day references, having a preference for display according to a preferred time zone, means for comparing said given time zone as received in association with one of said time of day references, and means for offsetting said time of day reference when said given time zone and said preferred time zone do not match. - View Dependent Claims (7, 8, 9, 10, 11)
-
-
12. In a method of time keeping having a time keeping system broadcasting by radio signal time of day information to a plurality of radio signal receiving devices employing said broadcast time of day information to maintain and display time of day, an improvement comprising the steps of:
-
transmitting in conjunction with said broadcast time of day information an indication of a time zone associated with said broadcast time of day information; maintaining at each of said plurality of radio signal receiving devices a time zone preference indicator; and comparing at each of said plurality of radio signal receiving devices upon receipt of said broadcast time of day information said indication of a time zone with said time zone preference indicator and if a match condition results then accepting for time keeping said broadcast time of day information, and if a match condition does not result then offsetting for use in time keeping said broadcast time of day information as a function of said time zone preference indicator. - View Dependent Claims (13, 14, 15)
-
Specification