An electronic timepiece includes an obtaining circuit, a first processor and a second processor. The obtaining circuit obtains information on current time from outside. The first processor measures time. The second processor is connected to the obtaining circuit. The first processor obtains a synchronization signal corresponding to the current time, obtains the current time, which the second processor obtains from the obtaining circuit, and based on the current time and the synchronization signal, corrects the measuring time, which the first processor is measuring.

A time synchronization method and apparatus includes determining a time difference between reference time and system time of an artificial intelligence device, where the reference time is timed by an internal clock of the artificial intelligence device and is aligned based on a satellite timing signal, or the reference time is timed by an internal clock of the artificial intelligence device; and adjusting the system time based on a preset step value if the time difference is greater than a preset value.

A disciplined clock provides a disciplined time and a disciplined frequency synchronous with a reference clock. The disciplined clock includes: a time receiver to: receive a common view signal from the common view clock; and produce a receiver timing signal; a local clock to: receive a frequency correction; and produce a local timing signal; a time interval counter to: receive the receiver timing signal from the time receiver; receive the local timing signal from the lock clock; and determine a time difference between the receiver timing signal and the local timing signal; and a controller to: receive the time difference from the time interval counter; and communicate the frequency correction, based on the time difference, to the local clock.

A disciplined clock provides a disciplined time and a disciplined frequency synchronous with a reference clock. The disciplined clock includes: a time receiver to: receive a common view signal from the common view clock; and produce a receiver timing signal; a local clock to: receive a frequency correction; and produce a local timing signal; a time interval counter to: receive the receiver timing signal from the time receiver; receive the local timing signal from the lock clock; and determine a time difference between the receiver timing signal and the local timing signal; and a controller to: receive the time difference from the time interval counter; and communicate the frequency correction, based on the time difference, to the local clock.

An automatic regular time service method for a pointer type intelligent clock includes the following steps: a clock is connected to a mobile intelligent terminal by a wireless communication module to obtain a standard time; when the clock is not connected to the mobile intelligent terminal, an MCU module calls an internal error correction parameter list regularly by means of a command signal to obtain a correction time; and a movement controls pointers to rotate to synchronize the time to the standard time or correction time. A time service system for a pointer type intelligent clock is also disclosed. The method and the system solve the timekeeping error problem of a clock caused by a crystal oscillator error of a quartz movement, and can perform an automatic time service even if the clock is not connected to the network.

The invention discloses a pointer type Bluetooth intelligently time-corrected clock movement, comprising a movement body, wherein the bottom of the movement body is provided with a cell box, the surface of the cell box is provided with a disassembling hole, an hourly chiming module is provided at one side of the cell box, a central microprocessor is provided at one side of the hourly chiming module, a Bluetooth communication module is provided at one side of the central microprocessor, a power management circuit is provided at the other side of the cell box, and a display screen is provided at one end of the power management circuit. According to the invention, through an integrated technological application of optics, electron, mechanical transmission and wireless communication, the control over a mechanical gear assembly is accomplished; through wirelessly receiving time information on an APP software and combining an operating principle of the central microprocessor controlling over a core plate and an optic-coupling device, a novel automatically time-corrected clock product is accomplished. The pointer type Bluetooth intelligently time-corrected clock movement is relatively practical, relatively high in precision, free of influences from factors of geography, signals and the like, and is suitable for broad promotion and use.

The invention discloses a pointer type Bluetooth intelligently time-corrected clock movement, comprising a movement body, wherein the bottom of the movement body is provided with a cell box, the surface of the cell box is provided with a disassembling hole, an hourly chiming module is provided at one side of the cell box, a central microprocessor is provided at one side of the hourly chiming module, a Bluetooth communication module is provided at one side of the central microprocessor, a power management circuit is provided at the other side of the cell box, and a display screen is provided at one end of the power management circuit. According to the invention, through an integrated technological application of optics, electron, mechanical transmission and wireless communication, the control over a mechanical gear assembly is accomplished; through wirelessly receiving time information on an APP software and combining an operating principle of the central microprocessor controlling over a core plate and an optic-coupling device, a novel automatically time-corrected clock product is accomplished. The pointer type Bluetooth intelligently time-corrected clock movement is relatively practical, relatively high in precision, free of influences from factors of geography, signals and the like, and is suitable for broad promotion and use.

A distributed electromagnetic method synchronization system and method involving a satellite communication and navigation system. The method includes the following steps: the transmitter and the receiver establish connection with the satellite respectively to realize the position and time synchronization; the transmitter and the receiver acquire the second-pulse-signal, and according to the second-pulse-signal to adjust their own temperature compensation crystal, so that the frequency reaches the preset value; in the field of operation, the transmitter and receiver through the satellite mutual communication, timely adjustment of the operation process. In the above-mentioned way, the communication function can be set in one place to facilitate the timely adjustment of the data acquisition process so as to ensure the quality of the collected data and improve the efficiency of the field operation.

A distributed electromagnetic method synchronization system and method involving a satellite communication and navigation system. The method includes the following steps: the transmitter and the receiver establish connection with the satellite respectively to realize the position and time synchronization; the transmitter and the receiver acquire the second-pulse-signal, and according to the second-pulse-signal to adjust their own temperature compensation crystal, so that the frequency reaches the preset value; in the field of operation, the transmitter and receiver through the satellite mutual communication, timely adjustment of the operation process. In the above-mentioned way, the communication function can be set in one place to facilitate the timely adjustment of the data acquisition process so as to ensure the quality of the collected data and improve the efficiency of the field operation.

A system and method for synchronization among clocks within a wireless system is presented. The method can comprise sending a gong signal comprising a gong signal time to the clocks when a fixed amount of time elapses; at each clock, when the gong signal is received and when the gong signal time is not equal to the clock time, setting the clock time to the gong signal time; and at each clock, when the gong signal is not received, setting the clock time to an estimated time; and learning a skew. In one aspect, a Gaussian distribution fitting technique is used for learning and for calculating the estimated time.