JPS5366308A - Tone signal detector using n-path filter - Google Patents

Tone signal detector using n-path filter

Info

Publication number
JPS5366308A
JPS5366308A JP14185976A JP14185976A JPS5366308A JP S5366308 A JPS5366308 A JP S5366308A JP 14185976 A JP14185976 A JP 14185976A JP 14185976 A JP14185976 A JP 14185976A JP S5366308 A JPS5366308 A JP S5366308A
Authority
JP
Japan
Prior art keywords
path filter
signal detector
tone signal
filter
path
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
JP14185976A
Other languages
Japanese (ja)
Other versions
JPS6212701B2 (en
Inventor
Yasuhiro Mori
Takashi Oda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14185976A priority Critical patent/JPS5366308A/en
Priority to GB47472/77A priority patent/GB1562121A/en
Priority to AU30897/77A priority patent/AU510177B2/en
Priority to DE2752522A priority patent/DE2752522C2/en
Priority to CA291,818A priority patent/CA1089033A/en
Priority to US05/854,967 priority patent/US4127846A/en
Publication of JPS5366308A publication Critical patent/JPS5366308A/en
Publication of JPS6212701B2 publication Critical patent/JPS6212701B2/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
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To simplify the circuit by enabling a plurality of tone signals receivable sequentially through the use of a N-path filter.
JP14185976A 1976-11-26 1976-11-26 Tone signal detector using n-path filter Granted JPS5366308A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP14185976A JPS5366308A (en) 1976-11-26 1976-11-26 Tone signal detector using n-path filter
GB47472/77A GB1562121A (en) 1976-11-26 1977-11-15 Tone signal detecting circuits
AU30897/77A AU510177B2 (en) 1976-11-26 1977-11-23 Tone signal detecting circuit
DE2752522A DE2752522C2 (en) 1976-11-26 1977-11-24 Tunable tone detector
CA291,818A CA1089033A (en) 1976-11-26 1977-11-25 Tone signal detecting circuit
US05/854,967 US4127846A (en) 1976-11-26 1977-11-25 Tone signal detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14185976A JPS5366308A (en) 1976-11-26 1976-11-26 Tone signal detector using n-path filter

Publications (2)

Publication Number Publication Date
JPS5366308A true JPS5366308A (en) 1978-06-13
JPS6212701B2 JPS6212701B2 (en) 1987-03-20

Family

ID=15301817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14185976A Granted JPS5366308A (en) 1976-11-26 1976-11-26 Tone signal detector using n-path filter

Country Status (1)

Country Link
JP (1) JPS5366308A (en)

Also Published As

Publication number Publication date
JPS6212701B2 (en) 1987-03-20

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