Method for controlling electronic watch and electronic watch
AssigneeSeiko Epson Corporation
InventorEiichiro Yamaguchi
Life of this patent
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Abstract
A method for controlling an electronic watch that includes a first pointing hand, a first motor configured to move the first pointing hand, a second pointing hand, a second motor configured to move the second pointing hand, and a pressure sensor configured to measure a pressure, the method including, when start of diving is detected based on a pressure measured by the pressure sensor, controlling the first motor and the second motor, and indicating with the first pointing hand and the second pointing hand a water depth based on the pressure and a diving time period.
Claims13
An electronic watch, comprising:
- an hour hand;
- a first motor configured to move the hour hand;
- a minute hand;
- a second motor configured to move the minute hand;
- a seconds hand;
- a third motor configured to move the seconds hand;
- a first motor driving circuit configured to drive the first motor;
- a second motor driving circuit configured to drive the second motor;
- a third motor driving circuit configured to drive the third motor;
- a pressure sensor configured to measure a pressure;
- and
- a controller configured to:
- estimate a water depth based on the measured pressure;
- detect start of first diving when the water depth corresponding to the measured pressure exceeds a first threshold;
- detect start of second diving when the water depth corresponding to the measured pressure exceeds a second threshold, the second threshold corresponding to a deeper water depth than the first threshold;
- initiate counting of a diving period of time when the start of second diving is detected;
- control a position of one of the hour hand or the minute hand to a first position indicating the water depth after the start of second diving is detected;
- control a position of the other of the hour hand or the minute hand to a second position indicating the diving period of time after the start of second diving is detected;
- and
- control a position of the seconds hand to a third position indicating either seconds of current time or seconds of the diving period of time after the start of second diving is detected.
A method for controlling an electronic watch for causing a controller to execute a process, the method comprising executing on the controller the steps of:
- moving an hour hand via a first motor and a first motor driving circuit;
- moving a minute hand via a second motor and a second motor driving circuit,
- moving a seconds hand via a third motor and a third motor driving circuit;
- measuring a pressure via a pressure sensor;
- detecting start of diving based on the measured pressure;
- estimating a water depth based on the measure pressure;
- detecting start of first diving when the water depth corresponding to the measured pressure exceeds a first threshold;
- detecting start of second diving when the water depth corresponding to the measured pressure exceeds a second threshold, the second threshold corresponding to a deeper water depth than the first threshold;
- initiating of counting a diving period of time when the start of second diving is detected,
- controlling a position of one of the hour hand or the minute hand to a first position indicating the water depth after the start of second diving is detected;
- controlling a position of the other of the hour hand or the minute hand to a second position indicating the diving period of time after the start of second diving is detected;
- and
- controlling a position of the seconds hand to a third position indicating either seconds of current time or seconds of the diving period of time after the start of second diving is detected.
Dependencies are inferred from the claim text.