IT1034219B - DIGITAL SURVEILLANCE AND ALARM DEVICE - Google Patents

DIGITAL SURVEILLANCE AND ALARM DEVICE

Info

Publication number
IT1034219B
IT1034219B IT21193/75A IT2119375A IT1034219B IT 1034219 B IT1034219 B IT 1034219B IT 21193/75 A IT21193/75 A IT 21193/75A IT 2119375 A IT2119375 A IT 2119375A IT 1034219 B IT1034219 B IT 1034219B
Authority
IT
Italy
Prior art keywords
alarm device
digital surveillance
surveillance
digital
alarm
Prior art date
Application number
IT21193/75A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT1034219B publication Critical patent/IT1034219B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
IT21193/75A 1974-03-18 1975-03-13 DIGITAL SURVEILLANCE AND ALARM DEVICE IT1034219B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2412966A DE2412966C3 (en) 1974-03-18 1974-03-18 Digital device for monitoring the synchronization of carrier frequency devices

Publications (1)

Publication Number Publication Date
IT1034219B true IT1034219B (en) 1979-09-10

Family

ID=5910415

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21193/75A IT1034219B (en) 1974-03-18 1975-03-13 DIGITAL SURVEILLANCE AND ALARM DEVICE

Country Status (9)

Country Link
JP (1) JPS5310417B2 (en)
AU (1) AU7897075A (en)
CH (1) CH574688A5 (en)
DE (1) DE2412966C3 (en)
FR (1) FR2265214B1 (en)
GB (1) GB1494677A (en)
IT (1) IT1034219B (en)
NL (1) NL7503157A (en)
SE (1) SE397755B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988696A (en) * 1975-11-28 1976-10-26 The Bendix Corporation Phase lock detector for digital frequency synthesizer
JPS54150564A (en) * 1978-05-17 1979-11-26 Fujitsu Ltd Alarm circuit for pll circuit
DE2825277C3 (en) * 1978-06-08 1981-05-07 Siemens AG, 1000 Berlin und 8000 München Device for carrier shutdown
DE2918850C2 (en) * 1979-05-10 1983-05-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Method and circuit arrangement for recognizing the control status of a phase locked loop
JPS5776929A (en) * 1980-10-30 1982-05-14 Denki Kogyo Kk Pll synchronizing detector

Also Published As

Publication number Publication date
DE2412966B2 (en) 1978-11-16
JPS5310417B2 (en) 1978-04-13
FR2265214A1 (en) 1975-10-17
DE2412966A1 (en) 1975-11-20
SE7502895L (en) 1975-09-19
AU7897075A (en) 1976-09-16
NL7503157A (en) 1975-09-22
DE2412966C3 (en) 1979-07-12
CH574688A5 (en) 1976-04-15
FR2265214B1 (en) 1979-02-16
GB1494677A (en) 1977-12-07
JPS50128967A (en) 1975-10-11
SE397755B (en) 1977-11-14

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