JPH0429283U - - Google Patents

Info

Publication number
JPH0429283U
JPH0429283U JP6999590U JP6999590U JPH0429283U JP H0429283 U JPH0429283 U JP H0429283U JP 6999590 U JP6999590 U JP 6999590U JP 6999590 U JP6999590 U JP 6999590U JP H0429283 U JPH0429283 U JP H0429283U
Authority
JP
Japan
Prior art keywords
voice band
signal
recording
band signal
digital signal
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.)
Granted
Application number
JP6999590U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0646141Y2 (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 JP1990069995U priority Critical patent/JPH0646141Y2/ja
Publication of JPH0429283U publication Critical patent/JPH0429283U/ja
Application granted granted Critical
Publication of JPH0646141Y2 publication Critical patent/JPH0646141Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Closed-Circuit Television Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP1990069995U 1990-06-29 1990-06-29 テレビドアホン装置 Expired - Fee Related JPH0646141Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990069995U JPH0646141Y2 (ja) 1990-06-29 1990-06-29 テレビドアホン装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990069995U JPH0646141Y2 (ja) 1990-06-29 1990-06-29 テレビドアホン装置

Publications (2)

Publication Number Publication Date
JPH0429283U true JPH0429283U (en]) 1992-03-09
JPH0646141Y2 JPH0646141Y2 (ja) 1994-11-24

Family

ID=31605780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990069995U Expired - Fee Related JPH0646141Y2 (ja) 1990-06-29 1990-06-29 テレビドアホン装置

Country Status (1)

Country Link
JP (1) JPH0646141Y2 (en])

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54138398A (en) * 1978-04-19 1979-10-26 Nippon Anzen Keibi Hoshiyou Kk Centralized warning system
JPH01277090A (ja) * 1988-04-28 1989-11-07 Mitsubishi Electric Corp 静止画テレビ電話装置
JPH0231551A (ja) * 1988-07-21 1990-02-01 Canon Inc ドアホン

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54138398A (en) * 1978-04-19 1979-10-26 Nippon Anzen Keibi Hoshiyou Kk Centralized warning system
JPH01277090A (ja) * 1988-04-28 1989-11-07 Mitsubishi Electric Corp 静止画テレビ電話装置
JPH0231551A (ja) * 1988-07-21 1990-02-01 Canon Inc ドアホン

Also Published As

Publication number Publication date
JPH0646141Y2 (ja) 1994-11-24

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees