JPS5895487A - 多周波信号受信器 - Google Patents

多周波信号受信器

Info

Publication number
JPS5895487A
JPS5895487A JP56192904A JP19290481A JPS5895487A JP S5895487 A JPS5895487 A JP S5895487A JP 56192904 A JP56192904 A JP 56192904A JP 19290481 A JP19290481 A JP 19290481A JP S5895487 A JPS5895487 A JP S5895487A
Authority
JP
Japan
Prior art keywords
circuit
maximum value
output
threshold
check
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
JP56192904A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0415680B2 (enExample
Inventor
Ryujiro Muramatsu
村松　隆二郎
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56192904A priority Critical patent/JPS5895487A/ja
Publication of JPS5895487A publication Critical patent/JPS5895487A/ja
Publication of JPH0415680B2 publication Critical patent/JPH0415680B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
JP56192904A 1981-12-02 1981-12-02 多周波信号受信器 Granted JPS5895487A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56192904A JPS5895487A (ja) 1981-12-02 1981-12-02 多周波信号受信器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56192904A JPS5895487A (ja) 1981-12-02 1981-12-02 多周波信号受信器

Publications (2)

Publication Number Publication Date
JPS5895487A true JPS5895487A (ja) 1983-06-07
JPH0415680B2 JPH0415680B2 (enExample) 1992-03-18

Family

ID=16298908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56192904A Granted JPS5895487A (ja) 1981-12-02 1981-12-02 多周波信号受信器

Country Status (1)

Country Link
JP (1) JPS5895487A (enExample)

Also Published As

Publication number Publication date
JPH0415680B2 (enExample) 1992-03-18

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