JPS5370708A - Multi-frequency receiver circuit - Google Patents

Multi-frequency receiver circuit

Info

Publication number
JPS5370708A
JPS5370708A JP14729376A JP14729376A JPS5370708A JP S5370708 A JPS5370708 A JP S5370708A JP 14729376 A JP14729376 A JP 14729376A JP 14729376 A JP14729376 A JP 14729376A JP S5370708 A JPS5370708 A JP S5370708A
Authority
JP
Japan
Prior art keywords
receiver circuit
frequency receiver
bpf
receiver
enable
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
JP14729376A
Other languages
Japanese (ja)
Inventor
Kiyoshi Takemori
Yasuhiko Miwata
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 JP14729376A priority Critical patent/JPS5370708A/en
Publication of JPS5370708A publication Critical patent/JPS5370708A/en
Pending 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)

Abstract

PURPOSE:To enable the use of the BPF of only the same frequency and thus to increase both the mass productivity and the control performance, by applying the heterodyne system to the receiver.
JP14729376A 1976-12-07 1976-12-07 Multi-frequency receiver circuit Pending JPS5370708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14729376A JPS5370708A (en) 1976-12-07 1976-12-07 Multi-frequency receiver circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14729376A JPS5370708A (en) 1976-12-07 1976-12-07 Multi-frequency receiver circuit

Publications (1)

Publication Number Publication Date
JPS5370708A true JPS5370708A (en) 1978-06-23

Family

ID=15426921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14729376A Pending JPS5370708A (en) 1976-12-07 1976-12-07 Multi-frequency receiver circuit

Country Status (1)

Country Link
JP (1) JPS5370708A (en)

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