Electronic Device
First Claim
1. An electronic device comprising:
- a timekeeping unit that keeps internal time;
a display unit that displays a display time based on the internal time;
a reception unit that receives satellite signals transmitted from satellites and outputs positioning information and satellite time information corresponding to a reference time based on the received signals;
a first correction unit that adjusts the display time based on the satellite time information and correction information;
a first storage unit that stores time zone information denoting the time difference to the reference time for each region;
an operating unit that outputs an operation signal corresponding to user operations;
a second correction unit that adjusts the display time based on the operation signal, and generates time difference information indicating the time difference between the reference time and the corrected display time;
a second storage unit that correlates and stores the time difference information with the region identified by the positioning information; and
a control unit that, when positioning information is output from the reception unit, executes a process of determining if the positioning information identifies a region corresponding to time difference information stored in the second storage unit,executes a process of supplying the time difference information as the correction information to the first correction unit when the positioning information identifies a region in the second storage unit, andwhen the positioning information does not identify a region in the second storage unit, executes a process of referencing the first storage unit and supplying the time zone information corresponding to the region identified by the positioning information as the correction information to the first correction unit.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic device that can display the current time reduces the number of times that the time must be manually set. The electronic device 100 has a CPU 20 that keeps time internally, a display unit 50 that displays the time based on the internal time, a GPS device 10 that receives satellite signals and outputs satellite time information according to the positioning information and UTC, and EEPROM 32 that stores time zone information denoting the time difference to UTC for individual regions. The CPU 20 adjusts the displayed time based on the satellite time information and correction information. The CPU 20 also adjusts the displayed time based on an operation signal, and stores time difference information denoting the time difference between the displayed time after being adjusted and UTC linked to the region associated with the positioning information in flash ROM 33.
32 Citations
8 Claims
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1. An electronic device comprising:
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a timekeeping unit that keeps internal time; a display unit that displays a display time based on the internal time; a reception unit that receives satellite signals transmitted from satellites and outputs positioning information and satellite time information corresponding to a reference time based on the received signals; a first correction unit that adjusts the display time based on the satellite time information and correction information; a first storage unit that stores time zone information denoting the time difference to the reference time for each region; an operating unit that outputs an operation signal corresponding to user operations; a second correction unit that adjusts the display time based on the operation signal, and generates time difference information indicating the time difference between the reference time and the corrected display time; a second storage unit that correlates and stores the time difference information with the region identified by the positioning information; and a control unit that, when positioning information is output from the reception unit, executes a process of determining if the positioning information identifies a region corresponding to time difference information stored in the second storage unit, executes a process of supplying the time difference information as the correction information to the first correction unit when the positioning information identifies a region in the second storage unit, and when the positioning information does not identify a region in the second storage unit, executes a process of referencing the first storage unit and supplying the time zone information corresponding to the region identified by the positioning information as the correction information to the first correction unit. - View Dependent Claims (2, 3, 5, 6, 7, 8)
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4. An electronic device comprising:
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a timekeeping unit that keeps internal time; a display unit that displays a display time based on the internal time; a reception unit that receives satellite signals transmitted from satellites and outputs positioning information and satellite time information corresponding to a reference time based on the received signals; a first correction unit that adjusts the display time based on the satellite time information and correction information; a first storage unit that stores time zone information denoting the time difference to the reference time for each region; an operating unit that outputs an operation signal corresponding to user operations; a second correction unit that adjusts the display time based on the operation signal, and generates time difference information indicating the time difference between the reference time and the corrected display time; a second storage unit that correlates and stores the time difference information and the positioning information; and a control unit that, when positioning information is output from the reception unit, executes a process of calculating the distance between the positioning information output from the reception unit and the positioning information stored in the second storage unit, a process of determining if the calculated distance is less than or equal to a specific distance, a process of supplying the time difference information as the correction information to the first correction unit when the calculated distance is less than the specific distance, and a process of supplying the time zone information as the correction information to the first correction unit when the calculated distance is less than the specific distance.
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Specification