JPS5545213A - Speaker line switch for emergency broadcast - Google Patents

Speaker line switch for emergency broadcast

Info

Publication number
JPS5545213A
JPS5545213A JP11799578A JP11799578A JPS5545213A JP S5545213 A JPS5545213 A JP S5545213A JP 11799578 A JP11799578 A JP 11799578A JP 11799578 A JP11799578 A JP 11799578A JP S5545213 A JPS5545213 A JP S5545213A
Authority
JP
Japan
Prior art keywords
switch
line
speaker
emergency
broadcast
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.)
Pending
Application number
JP11799578A
Other languages
Japanese (ja)
Inventor
Noriyoshi Ishikuri
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.)
Toshiba Electric Equipment Corp
Original Assignee
Toshiba Electric Equipment Corp
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 Toshiba Electric Equipment Corp filed Critical Toshiba Electric Equipment Corp
Priority to JP11799578A priority Critical patent/JPS5545213A/en
Publication of JPS5545213A publication Critical patent/JPS5545213A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/82—Wired systems using signals not modulated onto a carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/26—Arrangements for switching distribution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/76—Wired systems
    • H04H20/82—Wired systems using signals not modulated onto a carrier
    • H04H20/83—Wired systems using signals not modulated onto a carrier not sharing the network with any other service

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Alarm Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To facilitate part management and repair with parts, which can be used commonly, without special relays, etc., by using commonly the speaker line and the line switch, which have been already provided, when an emergency broadcast equipment is provided newly. CONSTITUTION:Switch 27 is inserted to the service broadcast line which has been already provided, and a line for connecting an emergency equipment newly is inputted to this switch 27, and the line, the broadcast switch, etc., which have been already provided are used as they are by performing switching operation. Therefore, switch 27 is provided with various terminals 28, 30, 33, 34, 36, 39, 40 and 45, and is provided with input switching switch 32 speaker switching switch 38. All speaker lines 37 are controlled in case of emergency use and control circuit 41 is used to use a part of lines 37 selectively in case of partial use. Further, a power source is led from the external, and rectifier circuit 44 is provided.
JP11799578A 1978-09-27 1978-09-27 Speaker line switch for emergency broadcast Pending JPS5545213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11799578A JPS5545213A (en) 1978-09-27 1978-09-27 Speaker line switch for emergency broadcast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11799578A JPS5545213A (en) 1978-09-27 1978-09-27 Speaker line switch for emergency broadcast

Publications (1)

Publication Number Publication Date
JPS5545213A true JPS5545213A (en) 1980-03-29

Family

ID=14725420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11799578A Pending JPS5545213A (en) 1978-09-27 1978-09-27 Speaker line switch for emergency broadcast

Country Status (1)

Country Link
JP (1) JPS5545213A (en)

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