| Patents for G04R 20 - Setting the time according to the time information carried or implied by the radio signal (1,375) |
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| 03/01/1995 | EP0640897A1 Broadcast signal receivers |
| 03/01/1995 | CA2105222A1 Time adjustment system |
| 01/25/1995 | EP0635771A1 Data transmission/reception system of electronic timepiece |
| 11/03/1994 | DE4313788A1 Time measurement device for computers |
| 10/20/1994 | DE4311942A1 Device with a receiver circuit for receiving teletext signals |
| 09/20/1994 | US5349570 Method for operation of a radio-controlled clock and radio-controlled clock for use in an environment subject to interference fields |
| 08/25/1994 | DE4405103A1 Video cassette recorder with automatic time setting function |
| 08/25/1994 | DE4405099A1 Video cassette recorder and associated time display method |
| 08/25/1994 | DE4305184A1 Device for receiving a normal-time transmitter for an extended temperature range |
| 08/18/1994 | DE4304819A1 Input circuit for a straight-through receiver |
| 08/03/1994 | EP0608734A2 Wristwatch |
| 08/03/1994 | EP0608733A2 Autonomous radio clock |
| 07/27/1994 | EP0607814A1 Television signals receiver with a clock having an automatic reset device |
| 07/21/1994 | WO1994016366A1 Data transmission/reception system of electronic timepiece |
| 07/12/1994 | US5329500 Video cassette recorder having automatic time setting function |
| 06/16/1994 | DE4242384A1 Homodyne receiver for amplitude-sampled radio time signals - has code-selective switchable time constant in integrating circuit sepg. DC component for gain control of input amplifiers |
| 06/07/1994 | US5319374 Precise universal time for vehicles |
| 05/11/1994 | WO1994010612A1 Radio-controlled clockwork |
| 05/11/1994 | CN2164568Y High precision quartz clock |
| 04/06/1994 | EP0590337A1 Method for the functioning pf a radio clock and radio clock to be used in an envirenment with disturbed field |
| 03/23/1994 | EP0588042A2 Radio clock |
| 03/22/1994 | US5297120 Radio wave-standardized electronic timepiece |
| 03/10/1994 | DE4236903C1 Funkgesteuertes Uhrwerk The radio-controlled movement |
| 03/03/1994 | DE4227502A1 Receiver for amplitude sampled time character signals - with two input amplifiers selectively switched in to select reception frequency for optimum sensitivity |
| 02/01/1994 | US5283532 Receiver having a local oscillator first synchronized to a reference frequency and then to a received signal |
| 01/13/1994 | DE4222307A1 Watch with adjustment to precise local time reference - derived from absolute standard source transmitted by satellite with position navigation function |
| 12/16/1993 | DE4219417A1 Narrow-band data signal receiver from long-wave transmitter - employs Hilbert transform to produce in=phase and quadrature signal components for coordinate rotation digital computer. |
| 11/04/1993 | DE4213883A1 Driver circuit for time signal receiver with computer interface - resets internal clock to official time with receiver data rate adjusted to between 1 and 8 times reciprocal of pulse duration |
| 10/13/1993 | CN2143791Y Automatic correcting time digit electronic clock |
| 10/05/1993 | US5251191 Remotely-synchronizable time display |
| 09/29/1993 | EP0562410A1 Method and apparatus for synchronizing a real time clock |
| 08/18/1993 | EP0555534A2 Receiving means for coded time signals transmitted by radio |
| 08/05/1993 | DE4202435A1 GPS satellite-synchronised chronometer with local time display - uses XTAL-controlled clock and interpolation signal processor |
| 01/05/1993 | US5177714 Autonomous radio timepiece |
| 12/16/1992 | EP0518086A2 Radio receiver |
| 12/10/1992 | DE4119234A1 Circuitry determining selected time signals from data information - transmits bit-coded from radio transmitter with data information modulated two at 100 Hz of carrier frequency at first second of minute and at 1 Hz at beginning of second second of same minute |
| 12/10/1992 | DE4118387A1 Synchronising unit for timer designed as radio clock with time indication - converts received radio signal to digital evaluative pulses and time pulses for evaluation circuit converting to time telegram |
| 08/19/1992 | CN2113510U Automatic correcting time multifunctional module type digital display clock |
| 08/12/1992 | EP0498199A2 Satellite signal receiver with automatic time of day information |
| 04/14/1992 | US5105396 Autonomous radio timepiece |
| 04/01/1992 | CN1059974A Radio-timepiece |
| 01/21/1992 | US5083123 Autonomous radio controlled timepiece |
| 01/09/1992 | DE4104767A1 Automatic time setting circuit for digital clock of electronic appts. - has comparator for amplified radio signals and reference signals from generator |
| 01/08/1992 | EP0464760A2 Radio updated timetable clock |
| 12/31/1991 | US5077706 Autonomous radio timepiece capable of automatic correction regardless of time zone changes |
| 11/06/1991 | EP0455183A2 Autonomous radio-controlled clock |
| 08/08/1991 | DE4003015A1 Electronic circuit for quartz wrist watch - allows second hand to be set by electromagnet which can be switched out by minute signal |
| 08/07/1991 | EP0439725A2 Autonomous radio-controlled clock |
| 07/30/1991 | US5036500 Autonomous radio time piece having a resettable receiver actuation switch |
| 05/02/1991 | EP0424772A2 Remotely synchronizable time display |
| 04/27/1991 | CA2028535A1 Remote synchronizable time indicator |
| 10/31/1990 | EP0394654A2 Time switch |
| 08/15/1990 | CN2060565U Multifunction remote-controlled clock |
| 06/27/1990 | EP0374745A2 Autonomous radio-controlled clock |
| 06/13/1990 | EP0372432A2 Autonomous radio clock |
| 01/04/1990 | DE3822412A1 Method for automatically setting autonomous radio clocks |
| 08/22/1989 | US4860268 Autonomous radio timepiece |
| 04/20/1989 | DE3733965A1 Method for obtaining information from strongly mutilated data of a time signal transmitter |
| 03/29/1989 | EP0308881A2 Radio-controlled watch |
| 03/29/1989 | EP0308880A2 Autonomous radio clock |
| 03/16/1989 | DE3729839A1 Digital demodulator having a linear characteristic for high-frequency radio time signals |
| 12/22/1988 | DE3719650A1 Controller for radio time signal receiver |
| 08/30/1988 | US4768178 High precision radio signal controlled continuously updated digital clock |
| 06/09/1988 | DE3641161A1 Narrow-band crystal-controlled audion receiver |
| 10/28/1987 | EP0242717A2 Radio controlled clock provided with a ferrite rod antenna |
| 03/05/1987 | DE3531548A1 Microprocessor-compatible digital radio time signal receiver |
| 11/12/1986 | EP0201061A2 Receiver for amplitude-modulated time signals |
| 02/19/1986 | EP0172069A1 Data transmission installation, in particular for time distribution, transmitter and receiver for this installation |
| 01/21/1986 | US4565454 Time display system |
| 06/26/1985 | EP0141810A4 A time display system. |
| 05/22/1985 | EP0141810A1 A time display system |
| 04/26/1984 | WO1984001630A1 A time display system |
| 11/09/1982 | US4358836 Electronic watch with an automatic time indication modifier |
| 12/02/1981 | EP0040655A1 Method and means for automatically setting timepieces in a time zone |
| 02/10/1976 | US3937004 Portable miniature type information treating device |