JPH0420739U - - Google Patents

Info

Publication number
JPH0420739U
JPH0420739U JP6157690U JP6157690U JPH0420739U JP H0420739 U JPH0420739 U JP H0420739U JP 6157690 U JP6157690 U JP 6157690U JP 6157690 U JP6157690 U JP 6157690U JP H0420739 U JPH0420739 U JP H0420739U
Authority
JP
Japan
Prior art keywords
environmental noise
adjustment means
speaker
broadcasting
volume adjustment
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
JP6157690U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP6157690U priority Critical patent/JPH0420739U/ja
Publication of JPH0420739U publication Critical patent/JPH0420739U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)
JP6157690U 1990-06-11 1990-06-11 Pending JPH0420739U (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6157690U JPH0420739U (OSRAM) 1990-06-11 1990-06-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6157690U JPH0420739U (OSRAM) 1990-06-11 1990-06-11

Publications (1)

Publication Number Publication Date
JPH0420739U true JPH0420739U (OSRAM) 1992-02-21

Family

ID=31589945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6157690U Pending JPH0420739U (OSRAM) 1990-06-11 1990-06-11

Country Status (1)

Country Link
JP (1) JPH0420739U (OSRAM)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229327A (ja) * 1985-07-31 1987-02-07 Toshiba Electric Equip Corp 集合住宅情報システム
JPS63274232A (ja) * 1987-05-01 1988-11-11 Maspro Denkoh Corp 告知放送システム
JPH02107033A (ja) * 1988-10-17 1990-04-19 Nec Corp 有線放送受信装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229327A (ja) * 1985-07-31 1987-02-07 Toshiba Electric Equip Corp 集合住宅情報システム
JPS63274232A (ja) * 1987-05-01 1988-11-11 Maspro Denkoh Corp 告知放送システム
JPH02107033A (ja) * 1988-10-17 1990-04-19 Nec Corp 有線放送受信装置

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