A wristwatch and a power saving method thereof are provided herein. The wristwatch comprises: a time indicating device, configured to provide time information; a housing, defining a receiving room; a short distance communication module disposed in the receiving room, configured to implement short distance wireless communication with an external device, the communication module comprising: a security element, configured to process user security data; and a first coil, coupled to the security element and configured to transmit electromagnetic signals to communicate with the external device; the wristwatch further comprising: a second coil, coupled to the communication module, configured to sense an external magnetic field to generate a sensing signal, the sensing signal provided for controlling the communication module to be turned on or off to enable or disable transmission of the electromagnetic signals of the first coil. The wristwatch can reduce power consumption.

An electronic watch includes a time display, an antenna, a first substrate including a light-emitting element, a second substrate including a light-receiving element, a gear including a through hole passing light from the light-emitting element therethrough, the gear being disposed between the first and second substrates, and first and second conduction members electrically coupling the first and second substrates. The second substrate includes a first wiring electrically coupled to the first substrate via the first conduction member, and a second wiring electrically coupled to the second substrate via the second conduction member. Halfway on at least one of the first and second wirings, a circuit element is coupled in series that, compared to electrical resistance when a direct current flows in the wiring, increases electrical resistance when an alternating current generated by a radio wave received by the antenna flows in the wiring.

An electronic watch includes a time display, an antenna, a first substrate including a light-emitting element, a second substrate including a light-receiving element, a gear including a through hole passing light from the light-emitting element therethrough, the gear being disposed between the first and second substrates, and first and second conduction members electrically coupling the first and second substrates. The second substrate includes a first wiring electrically coupled to the first substrate via the first conduction member, and a second wiring electrically coupled to the second substrate via the second conduction member. Halfway on at least one of the first and second wirings, a circuit element is coupled in series that, compared to electrical resistance when a direct current flows in the wiring, increases electrical resistance when an alternating current generated by a radio wave received by the antenna flows in the wiring.

A system, method, and apparatus to automatically detect clocks within a given space and synchronize each clock within the given space to display the correct time is provided. The system includes a time component adjusting device including a communication module configured to detect and connect to clocks within the vicinity of the time component adjusting device, generate a clock tracking profile for each of the clocks, and ensure that each of the clocks depict the accurate time. The time component adjusting device also seeks to prevent desynchronization of clocks upon occurrence of events such as daylight savings and leap seconds.

A system, method, and apparatus to automatically detect clocks within a given space and synchronize each clock within the given space to display the correct time is provided. The system includes a time component adjusting device including a communication module configured to detect and connect to clocks within the vicinity of the time component adjusting device, generate a clock tracking profile for each of the clocks, and ensure that each of the clocks depict the accurate time. The time component adjusting device also seeks to prevent desynchronization of clocks upon occurrence of events such as daylight savings and leap seconds.

In an analog electronic watch system, a terminal equipment detects current display positions of hands in an image of the hands and a dial plate, and generates current display time information based on the current display positions. An analog electronic watch corrects the display positions of the hands based on the display time information. The terminal equipment at least acquires hand identification information including hand shape information about a shape of the hand of the analog electronic watch based on watch identification information transmitted from the analog electronic watch. The terminal equipment detects the current display positions based on the hand identification information, and transmits display time information based on the current display positions to the analog electronic watch.

In an analog electronic watch system, a terminal equipment detects current display positions of hands in an image of the hands and a dial plate, and generates current display time information based on the current display positions. An analog electronic watch corrects the display positions of the hands based on the display time information. The terminal equipment at least acquires hand identification information including hand shape information about a shape of the hand of the analog electronic watch based on watch identification information transmitted from the analog electronic watch. The terminal equipment detects the current display positions based on the hand identification information, and transmits display time information based on the current display positions to the analog electronic watch.

Provided is a communication system that includes an electronic timepiece and a communication apparatus, in which, when the electronic-timepiece communication unit demands a communication connection to the communication apparatus, the communication-apparatus control unit inquires whether or not the electronic timepiece is included in the connection approval list that is stored in the communication-apparatus storage unit, in which, in a case where the electronic timepiece is included in the connection approval list, the communication-apparatus communication unit establishes a communication connection to the electronic timepiece and performs data communication through which at least clock time data is sent to the electronic timepiece, and in which, in a case where the electronic timepiece is not included in the connection approval list, the communication-apparatus communication unit does not establish the communication connection to the electronic timepiece.

A system, method, and apparatus to automatically detect clocks within a given space and synchronize each clock within the given space to display the correct time is provided. The system includes a time component adjusting device including a communication module configured to detect and connect to clocks within the vicinity of the time component adjusting device, generate a clock tracking profile for each of the clocks, and ensure that each of the clocks depict the accurate time. The time component adjusting device also seeks to prevent desynchronization of clocks upon occurrence of events such as daylight savings and leap seconds.

A system, method, and apparatus to automatically detect clocks within a given space and synchronize each clock within the given space to display the correct time is provided. The system includes a time component adjusting device including a communication module configured to detect and connect to clocks within the vicinity of the time component adjusting device, generate a clock tracking profile for each of the clocks, and ensure that each of the clocks depict the accurate time. The time component adjusting device also seeks to prevent desynchronization of clocks upon occurrence of events such as daylight savings and leap seconds.