What is the principle of watch radio time synchronization?

Radio wave time synchronization principle of watches;

The electric wave clock combines the traditional clock technology and the current electric wave clock to replace time-frequency technology, microelectronics technology, communication technology, computer technology and many other technologies. The standard time signal sent by the National Time Service Center is received by long-wave radio, decoded by a built-in microprocessor, and the timer is automatically calibrated, so that the time displayed by the radio clock keeps accurate synchronization with the national standard time.

Radio clock is the fifth generation timer after the development of human timing technology, which relays hourglass, sundial, mechanical clock and response clock. The emergence of radio watch technology and products is another revolution in the history of human timing.

Extended data

Characteristics of radio wave timer:

(1) Radio reception function of six radio stations around the world

The built-in micro antenna receives the radio signal of standard time and automatically checks the time, date and calendar, so that the watch always keeps the accurate time. Six games refer to Japan (two games), North America, Germany, Britain and China. In China, Casio radio meter automatically receives the radio signal of Chinese standard time every day, which truly realizes high-precision time service.

(2) High integration and high density packaging technology

Multi-area radio wave receiving system needs a large number of electronic components. Casio independently developed high integration and high density packaging technology to assemble these electronic components in a limited space. Some electronic components are located by numerical calculation, while others control the interference of radio wave reception to a minimum by precise calculation.

(3) Automatic pointer position correction function

Use the original operation method to detect and determine the position of the second hand, minute hand and hour hand. If LSI component detects pointer deviation, it will automatically correct it to the correct position.

Baidu Encyclopedia-Radio Watch