WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

G04R　RADIO-CONTROLLED TIME-PIECES

G04R 20/00 Setting the time according to the time information carried or implied by the radio signal

G04R 20/02 ・the radio signal being sent by a satellite, e.g. GPS

G04R 20/04 ・・Tuning or receiving; Circuits therefor

G04R 20/06 ・・Decoding time data; Circuits therefor

G04R 20/08 ・the radio signal being broadcast from a long-wave call sign, e.g. DCF77, JJY40, JJY60, MSF60 or WWVB

G04R 20/10 ・・Tuning or receiving; Circuits therefor

G04R 20/12 ・・Decoding time data; Circuits therefor

G04R 20/14 ・the radio signal being a telecommunication standard signal, e.g. GSM, UMTS or 3G

G04R 20/16 ・・Tuning or receiving; Circuits therefor

G04R 20/18 ・・Decoding time data; Circuits therefor

G04R 20/20 ・the radio signal being an AM/FM standard signal, e.g. RDS

G04R 20/22 ・・Tuning or receiving; Circuits therefor

G04R 20/24 ・・Decoding time data; Circuits therefor

G04R 20/26 ・the radio signal being a near-field communication signal

G04R 20/28 ・・Tuning or receiving; Circuits therefor

G04R 20/30 ・・Decoding time data; Circuits therefor

G04R 40/00 Correcting the clock frequency

G04R 40/02 ・by phase locking

G04R 40/04 ・by detecting the radio signal frequency

G04R 40/06 ・by computing the time value implied by the radio signal

G04R 60/00 Constructional details

G04R 60/02 ・Antennas also serving as components of clocks or watches, e.g. motor coils

G04R 60/04 ・Antennas attached to or integrated in watch bracelets

G04R 60/06 ・Antennas attached to or integrated in clock or watch bodies

G04R 60/08 ・・inside bezels

G04R 60/10 ・・inside cases

G04R 60/12 ・・・inside metal cases

G04R 60/14 ・specific to electromechanical timepieces, e.g. moving parts thereof