A wearable device is disclosed. The wearable device may include a body. The wearable device may also include a band coupled with the body. The band may include a signal generator configured to generate a signal indicating a change of a shape of the band.

A wearable device is disclosed. The wearable device may include a body. The wearable device may also include a band coupled with the body. The band may include a signal generator configured to generate a signal indicating a change of a shape of the band.

An electronic watch includes a power generating mechanism; a battery that is charged with power generated by the power generating mechanism; hands that include a second hand; a driving source that rotates the hands; a driving circuit that drives the driving source with power supplied by the battery; and a control circuit that controls the driving circuit. The control circuit executes a first stopping operation for stopping the driving circuit and the control circuit in a power saving mode for suppressing power consumption and when a first determination time elapses without any power being generated by the power generating mechanism. The control circuit executes a second stopping operation for stopping the driving circuit and the control circuit in the power saving mode and when a second determination time elapses while a voltage of the battery is at a level equal to or lower than a predetermined level.

An electronic device is provided. The electronic device includes a display, at least one sensor module, a time module which receives time information, a first processor which generates and outputs a first image in a first mode, a second processor which generates and outputs a second image in a second mode driven at lower power than the first mode, and a sensor hub which transmits sensor data, acquired through the sensor module, to the first processor and/or the second processor in the second mode, the second processor being configured to, in the second mode where the first processor is in sleep state, receive a third image associated with the second image through the first processor, combine the third image with the sensor data received from the sensor module and the time information received through the time module to generate the second image, and display the second image on the display.

An electronic watch circuit for controlling the operation of a watch having analogue hands has an integrated circuit which contains data values to be transmitted to registers and transmitted to peripheral members of the watch. The electronic watch circuit further has a quartz crystal providing the clock base frequency to the integrated circuit and a connecting device arranged for enabling the peripheral member controllers, the quartz crystal, and the processor to communicate data relating to the operation of the watch to each other. The electronic circuit further has a microcontroller including a processor connected to a programmable memory. The integrated circuit has an interface, the microcontroller has a further interface, and the microcontroller is connected with integrated circuit by the interfaces allowing bidirectional exchange of data between the microcontroller and the integrated circuit.

An electronic watch circuit for controlling the operation of a watch having analogue hands has an integrated circuit which contains data values to be transmitted to registers and transmitted to peripheral members of the watch. The electronic watch circuit further has a quartz crystal providing the clock base frequency to the integrated circuit and a connecting device arranged for enabling the peripheral member controllers, the quartz crystal, and the processor to communicate data relating to the operation of the watch to each other. The electronic circuit further has a microcontroller including a processor connected to a programmable memory. The integrated circuit has an interface, the microcontroller has a further interface, and the microcontroller is connected with integrated circuit by the interfaces allowing bidirectional exchange of data between the microcontroller and the integrated circuit.

A positioning apparatus includes the following. A first oscillator outputs a clock signal. A second oscillator outputs a clock signal which is more accurate than the first oscillator. A receiver receives a radio wave from a positioning satellite. A positioning controller calculates a present position based on positioning information calculated from the received radio wave. The positioning controller controls switching of a supply source of the clock signal supplied to the receiver and the positioning controller between the first oscillator and the second oscillator depending on a reception status of the radio wave from the positioning satellite by the receiver.

A positioning apparatus includes the following. A first oscillator outputs a clock signal. A second oscillator outputs a clock signal which is more accurate than the first oscillator. A receiver receives a radio wave from a positioning satellite. A positioning controller calculates a present position based on positioning information calculated from the received radio wave. The positioning controller controls switching of a supply source of the clock signal supplied to the receiver and the positioning controller between the first oscillator and the second oscillator depending on a reception status of the radio wave from the positioning satellite by the receiver.

Characteristics of a watch band can change when placed in different configurations, and each of these characteristics can be correlated with each of the various configurations. The characteristics can be measured to detect in which of the various configurations the watch band is in. For example, the watch band can include an adjustable capacitor that changes it capacitance when the watch band changes its configuration. For example, the capacitance can change based on stretching of the watch band, bending of the watch band, and/or securement and release of an engagement element. The watch or another device can perform one or more operations based on the detected characteristic and configuration of the watch band.

Provided is an electronic watch which achieves a highest-speed fast-forward operation of a step motor based on various environments under which the watch is placed, and enables low-power driving. The electronic watch includes: a normal pulse generator circuit configured to output a normal pulse SP for driving a step motor; a detection pulse generator circuit configured to output, after the step motor has been driven with the normal pulse SP, detection pulses DP1 and DP2 for detecting whether or not the step motor has been rotated; a pulse selection circuit configured to selectively output the normal pulse SP and the detection pulses DP1 and DP2; a rotation detector circuit configured to input detection signals DS1 and DS2 generated from the detection pulses DP1 and DP2, and to determine whether or not the step motor has been rotated; and a frequency selection circuit configured to determine a driving interval of the normal pulse SP, in which the rotation detector circuit is configured to instruct the frequency selection circuit to select a frequency corresponding to a position at which the detection signals DS1 and DS2 have been generated.