JPH0113781B2 - - Google Patents

Info

Publication number
JPH0113781B2
JPH0113781B2 JP14959683A JP14959683A JPH0113781B2 JP H0113781 B2 JPH0113781 B2 JP H0113781B2 JP 14959683 A JP14959683 A JP 14959683A JP 14959683 A JP14959683 A JP 14959683A JP H0113781 B2 JPH0113781 B2 JP H0113781B2
Authority
JP
Japan
Prior art keywords
output
circuit
voltage
comparator
detection
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
JP14959683A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6041850A (ja
Inventor
Seiji Nakama
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP58149596A priority Critical patent/JPS6041850A/ja
Publication of JPS6041850A publication Critical patent/JPS6041850A/ja
Publication of JPH0113781B2 publication Critical patent/JPH0113781B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP58149596A 1983-08-18 1983-08-18 拡声電話装置 Granted JPS6041850A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58149596A JPS6041850A (ja) 1983-08-18 1983-08-18 拡声電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58149596A JPS6041850A (ja) 1983-08-18 1983-08-18 拡声電話装置

Publications (2)

Publication Number Publication Date
JPS6041850A JPS6041850A (ja) 1985-03-05
JPH0113781B2 true JPH0113781B2 (cs) 1989-03-08

Family

ID=15478659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58149596A Granted JPS6041850A (ja) 1983-08-18 1983-08-18 拡声電話装置

Country Status (1)

Country Link
JP (1) JPS6041850A (cs)

Also Published As

Publication number Publication date
JPS6041850A (ja) 1985-03-05

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