Provided is a radio-controlled timepiece that can reduce overall power consumption. The radio-controlled timepiece 1 has a receiver circuit 12 that executes during a specific time limit a reception process to acquire multiple time data from the standard time signals at different times; storage 22 that stores multiple time data; a timekeeper 23 that keeps an internal time; a time setting adjuster 24 that corrects the internal time based on coherent time data when the number of coherent time data, which is time data that is mutually coherent, in the multiple time data reaches a threshold; and a reception controller 21 that extends the time limit when the number of coherent time data is less than the threshold when a specific time that is shorter than the time limit has past since the reception process started.

An electronic device is provided. The electronic device may include a display, a processor operatively connected with the display and configured to generate external reference time information, a display driver integrated circuit configured to periodically or randomly receive the external reference time information from the processor, wherein the display driver integrated circuit is configured to generate internal time information based on an internal clock, to output a clock image corresponding to the internal time information on the display, and if a time error between the external reference time information and the internal time information occurs during the outputting of the clock image, to output the internal time information, the time error of which is corrected, on the display.

An electronic device is provided. The electronic device may include a display, a processor operatively connected with the display and configured to generate external reference time information, a display driver integrated circuit configured to periodically or randomly receive the external reference time information from the processor, wherein the display driver integrated circuit is configured to generate internal time information based on an internal clock, to output a clock image corresponding to the internal time information on the display, and if a time error between the external reference time information and the internal time information occurs during the outputting of the clock image, to output the internal time information, the time error of which is corrected, on the display.

An electronic timepiece includes a communication unit receiving identification information for identifying a radio station from the radio station, a storage unit storing a database having, as a record, the identification information and time difference information indicating a time difference associated with the identification information, a timekeeping unit in which a set time difference being a time difference with respect to a reference time is set, a first time difference correction unit correcting the set time difference to the time difference information associated with the identification information received by the communication unit, an operation unit accepting user operation, a second time difference correction unit correcting the set time difference according to the operation, and an update processing unit updating the database by changing the time difference information to the set time difference corrected by the second time difference correction unit.

An electronic timepiece includes a communication unit receiving identification information for identifying a radio station from the radio station, a storage unit storing a database having, as a record, the identification information and time difference information indicating a time difference associated with the identification information, a timekeeping unit in which a set time difference being a time difference with respect to a reference time is set, a first time difference correction unit correcting the set time difference to the time difference information associated with the identification information received by the communication unit, an operation unit accepting user operation, a second time difference correction unit correcting the set time difference according to the operation, and an update processing unit updating the database by changing the time difference information to the set time difference corrected by the second time difference correction unit.

The present technology relates to a mobile terminal, an information processor, an information processing method, and a program capable of synchronizing time with high precision even in a case where the number of satellites that can be captured is small.

In a case where the number of satellites that can be captured is less than a predetermined number, a mobile terminal of one aspect of the present technology does not perform positioning, and generates and outputs, from a positioning unit, pulse signals at predetermined intervals synchronized with a time of the satellite that can be captured, on the basis of information from the satellite. The mobile terminal then maintains time synchronization of wireless communication with an external device of a wireless communication unit with reference to the pulse signal, and performs the wireless communication. The present technology can be applied to terminals equipped with a positioning function based on GNSS and a wireless communication function such as LPWA.

In an approach for identifying a location of a mobile device a processor receives a first set of Global Positioning System (GPS) data at a time, wherein the time is specified by the mobile device. A processor synchronizes the time with Coordinated Universal Time (UTC). A processor retrieves offset values, wherein the offset values comprise one or more values to adjust one or more location coordinates based on the synchronized time, and wherein the offset values are determined by comparing a known set of location coordinates to a set of location coordinates calculated using another set of GPS data. A processor calculates location coordinates of the mobile device using the first set of GPS data and the offset values. A processor stores at least the location coordinates of the mobile device and the synchronized time.

In an approach for identifying a location of a mobile device a processor receives a first set of Global Positioning System (GPS) data at a time, wherein the time is specified by the mobile device. A processor synchronizes the time with Coordinated Universal Time (UTC). A processor retrieves offset values, wherein the offset values comprise one or more values to adjust one or more location coordinates based on the synchronized time, and wherein the offset values are determined by comparing a known set of location coordinates to a set of location coordinates calculated using another set of GPS data. A processor calculates location coordinates of the mobile device using the first set of GPS data and the offset values. A processor stores at least the location coordinates of the mobile device and the synchronized time.

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.

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.