EP0258838A3 - Process for actualizing the local time of a user of an information tranfer system - Google Patents

Process for actualizing the local time of a user of an information tranfer system Download PDF

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Publication number
EP0258838A3
EP0258838A3 EP19870112555 EP87112555A EP0258838A3 EP 0258838 A3 EP0258838 A3 EP 0258838A3 EP 19870112555 EP19870112555 EP 19870112555 EP 87112555 A EP87112555 A EP 87112555A EP 0258838 A3 EP0258838 A3 EP 0258838A3
Authority
EP
European Patent Office
Prior art keywords
time
user
systems
timer
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19870112555
Other languages
German (de)
French (fr)
Other versions
EP0258838A2 (en
Inventor
Herbert Dipl.-Ing. Gross
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0258838A2 publication Critical patent/EP0258838A2/en
Publication of EP0258838A3 publication Critical patent/EP0258838A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal

Abstract

Mittels eines Komparators (13) wird die Uhrzeitablage des aus einem Oszillator (4) und einem Uhrzeitprozessor (5) bestehenden lokalen Uhrzeitgebers (3) des Anwender­ systems (1) gegenüber einem Referenzuhrzeitgeber (10) festgestellt. Diese Uhrzeit-Ablagedaten werden dann zusammen mit den Uhrzeitdaten, die den Zeitpunkt der Inbetriebnahme oder des vorausgegangenen Vergleichs beinhalten und in einem Aktualiserungszeitpunkt-Speicher (6) abgespeichert sind, und mit den aktuellen Uhrzeit­ daten des Referenzuhrzeitgebers (10) einem Auswerter (14) zugeführt, in dem die mittlere Frequenzgenauigkeit des Oszillators (4) im Uhrzeitgeber (3) des Anwender­ systems (1) ermittelt wird, die dann sowohl zur An­ passung der zeitlichen Abstände der Uhrzeit-Vergleichs­ intervalle als auch zu einer Frequenznachstimmung des Oszillators (4) beim Anwendersystem-Uhrzeitgeber (3) verwendet werden kann. Die Erfindung ist anwendbar bei örtlich getrennten, uhrzeitgesteuerten, insbesondere mobilen Systemen, z.B. bei mit Verschlüsselung arbeitenden Informationsübertragungssystemen mit zeitlich geändertem Schlüssel. The time is stored by means of a comparator (13) of an oscillator (4) and a time processor (5) existing local clock (3) of the user systems (1) versus a reference clock timer (10) detected. This time filing data is then together with the time data, the time of the Commissioning or the previous comparison include and in an update time memory (6) are saved, and with the current time data of the reference clock timer (10) an evaluator (14) supplied in which the mean frequency accuracy of the oscillator (4) in the user's timer (3) systems (1) is determined, which is then used both for the An fit the time intervals of the time comparison intervals as well as a frequency adjustment of the Oscillators (4) in the user system clock (3) can be used. The invention is applicable to spatially separate, time-controlled, in particular mobile systems, e.g. at with encryption working information transmission systems changed key.

EP19870112555 1986-09-01 1987-08-28 Process for actualizing the local time of a user of an information tranfer system Withdrawn EP0258838A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3629600 1986-09-01
DE3629600 1986-09-01

Publications (2)

Publication Number Publication Date
EP0258838A2 EP0258838A2 (en) 1988-03-09
EP0258838A3 true EP0258838A3 (en) 1991-01-23

Family

ID=6308589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870112555 Withdrawn EP0258838A3 (en) 1986-09-01 1987-08-28 Process for actualizing the local time of a user of an information tranfer system

Country Status (1)

Country Link
EP (1) EP0258838A3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07109434B2 (en) * 1991-11-19 1995-11-22 株式会社精工舎 clock
DE4233126A1 (en) * 1992-10-02 1994-04-07 Telefunken Microelectron Procedure for the operation of a radio clock and radio clock for use in an environment subject to interference
DE4423366C1 (en) * 1994-07-04 1995-10-19 Grundig Emv Software clock operating method for electronic entertainment appts. e.g with TV receiver or video recorder
ATE168793T1 (en) 1994-09-24 1998-08-15 Ebauchesfabrik Eta Ag TIME MEASUREMENT IN A COMMUNICATION SYSTEM, COMMUNICATION SYSTEM AND RECEIVER THEREOF
TW424402B (en) * 1998-06-09 2001-03-01 Matsushita Electric Ind Co Ltd Signal transmission and receiving device
DE19847753A1 (en) * 1998-10-16 2000-04-20 Bosch Gmbh Robert Timepiece with clock signal generator detects time adjustments and alters relationship between number of clock signals and displayed time units accordingly
EP1122622A1 (en) * 2000-02-01 2001-08-08 Matsushita Electric Industrial Co., Ltd. Electronic device and method for adjusting an internal clock
CN101981530B (en) * 2008-04-11 2012-12-12 飞思卡尔半导体公司 Microprocessor having a low-power mode and a non-low power mode, data processing system and computer program product.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026481A (en) * 1957-09-30 1962-03-20 Ibm Synchronized time system
US3808365A (en) * 1970-12-08 1974-04-30 Gretag Ag Method and apparatus for encoding and decoding messages
US4142069A (en) * 1977-06-20 1979-02-27 The United States Of America As Represented By The Secretary Of The Army Time reference distribution technique
US4337463A (en) * 1980-08-22 1982-06-29 Control Data Corporation Time synchronization master station and remote station system
JPS60236088A (en) * 1984-05-09 1985-11-22 Hitachi Ltd Synchronizing system of network

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026481A (en) * 1957-09-30 1962-03-20 Ibm Synchronized time system
US3808365A (en) * 1970-12-08 1974-04-30 Gretag Ag Method and apparatus for encoding and decoding messages
US4142069A (en) * 1977-06-20 1979-02-27 The United States Of America As Represented By The Secretary Of The Army Time reference distribution technique
US4337463A (en) * 1980-08-22 1982-06-29 Control Data Corporation Time synchronization master station and remote station system
JPS60236088A (en) * 1984-05-09 1985-11-22 Hitachi Ltd Synchronizing system of network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 102 (P-448)[2159], 18. April 1986; & JP-A-60 236 088 (HITACHI) 22-11-1985 *

Also Published As

Publication number Publication date
EP0258838A2 (en) 1988-03-09

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Inventor name: GROSS, HERBERT, DIPL.-ING.