DE3210800C2 - - Google Patents

Info

Publication number
DE3210800C2
DE3210800C2 DE19823210800 DE3210800A DE3210800C2 DE 3210800 C2 DE3210800 C2 DE 3210800C2 DE 19823210800 DE19823210800 DE 19823210800 DE 3210800 A DE3210800 A DE 3210800A DE 3210800 C2 DE3210800 C2 DE 3210800C2
Authority
DE
Germany
Prior art keywords
room
call
volume
acoustic
nurse call
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.)
Expired
Application number
DE19823210800
Other languages
German (de)
English (en)
Other versions
DE3210800A1 (de
Inventor
Dieter Dipl.-Ing. 8080 Fuerstenfeldbruck De Klein
Manfred Dipl.-Ing. 8014 Neubiberg De Bauer
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.)
Zettler GmbH
Original Assignee
Alois Zettler Elektrotechnische Fabrik 8000 Muenchen De GmbH
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 Alois Zettler Elektrotechnische Fabrik 8000 Muenchen De GmbH filed Critical Alois Zettler Elektrotechnische Fabrik 8000 Muenchen De GmbH
Priority to DE19823210800 priority Critical patent/DE3210800A1/de
Publication of DE3210800A1 publication Critical patent/DE3210800A1/de
Application granted granted Critical
Publication of DE3210800C2 publication Critical patent/DE3210800C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Audible And Visible Signals (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
DE19823210800 1982-03-24 1982-03-24 Einrichtung zur akustischen rufnachsendung Granted DE3210800A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823210800 DE3210800A1 (de) 1982-03-24 1982-03-24 Einrichtung zur akustischen rufnachsendung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823210800 DE3210800A1 (de) 1982-03-24 1982-03-24 Einrichtung zur akustischen rufnachsendung

Publications (2)

Publication Number Publication Date
DE3210800A1 DE3210800A1 (de) 1983-10-06
DE3210800C2 true DE3210800C2 (enExample) 1988-11-10

Family

ID=6159165

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823210800 Granted DE3210800A1 (de) 1982-03-24 1982-03-24 Einrichtung zur akustischen rufnachsendung

Country Status (1)

Country Link
DE (1) DE3210800A1 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6069922A (ja) * 1983-09-26 1985-04-20 Nec Corp 表示付無線選択呼出受信機の表示器照明装置
JPS6128235A (ja) * 1984-07-18 1986-02-07 Nec Corp 表示付無線選択呼出受信機
US4904992A (en) * 1989-03-28 1990-02-27 Motorola, Inc. Radio with message reception and ambient noise level controlled indicator
DE4422308C2 (de) * 1994-06-17 2000-01-13 Zoellner Gmbh Automatisches Rottenwarngerät

Also Published As

Publication number Publication date
DE3210800A1 (de) 1983-10-06

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ZETTLER GMBH, 8000 MUENCHEN, DE

8339 Ceased/non-payment of the annual fee