IPC Classification

Class code (prefix) Descriptions Number of results
G04R 20/00 Setting the time according to the time information carried or implied by the radio signal
G04R 20/02 Setting the time according to the time information carried or implied by the radio signal 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 Setting the time according to the time information carried or implied by the radio signal 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 Setting the time according to the time information carried or implied by the radio signal 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 Setting the time according to the time information carried or implied by the radio signal 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 Setting the time according to the time information carried or implied by the radio signal 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 Correcting the clock frequency by phase locking
G04R 40/04 Correcting the clock frequency by detecting the radio signal frequency
G04R 40/06 Correcting the clock frequency 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 Antennas attached to or integrated in clock or watch bodies inside bezels
G04R 60/10 Antennas attached to or integrated in clock or watch bodies inside cases
G04R 60/12 Antennas attached to or integrated in clock or watch bodies inside cases inside metal cases
G04R 60/14 Constructional details specific to electromechanical timepieces, e.g. moving parts thereof