JPS5312207A - Multi-frequency signal receiver - Google Patents

Multi-frequency signal receiver

Info

Publication number
JPS5312207A
JPS5312207A JP8593476A JP8593476A JPS5312207A JP S5312207 A JPS5312207 A JP S5312207A JP 8593476 A JP8593476 A JP 8593476A JP 8593476 A JP8593476 A JP 8593476A JP S5312207 A JPS5312207 A JP S5312207A
Authority
JP
Japan
Prior art keywords
frequency signal
signal receiver
output
threshouls
malfunction
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
JP8593476A
Other languages
Japanese (ja)
Inventor
Shogo Usuda
Atsushi Iwata
Koichi Hasegawa
Kazuhiko Takaoka
Mutsuo Kataoka
Yujiro Sasahara
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP8593476A priority Critical patent/JPS5312207A/en
Publication of JPS5312207A publication Critical patent/JPS5312207A/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 improve the SN ratio and to obtain an output of the same timing in order to prevent the malfunction, by controlling both the detector and the output control circuit using the timer circuit output for the common threshouls voltage.
JP8593476A 1976-07-21 1976-07-21 Multi-frequency signal receiver Pending JPS5312207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8593476A JPS5312207A (en) 1976-07-21 1976-07-21 Multi-frequency signal receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8593476A JPS5312207A (en) 1976-07-21 1976-07-21 Multi-frequency signal receiver

Publications (1)

Publication Number Publication Date
JPS5312207A true JPS5312207A (en) 1978-02-03

Family

ID=13872576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8593476A Pending JPS5312207A (en) 1976-07-21 1976-07-21 Multi-frequency signal receiver

Country Status (1)

Country Link
JP (1) JPS5312207A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58200760A (en) * 1982-05-20 1983-11-22 柿沼　孝光 Automatic mahjong apparatus
JPS5920187A (en) * 1982-07-23 1984-02-01 井上　芳男 Pie feeder in mahjong pie automatic aligning machine
JPS5967982A (en) * 1982-10-12 1984-04-17 柿沼　孝光 Method and apparatus for discriminating photoelectric prede-termined direction of pie
JPS59108582A (en) * 1982-12-10 1984-06-23 電元オ−トメ−ション株式会社 Pie washing and arrangement apparatus in automatic mahjong table
JPS6080475A (en) * 1983-10-11 1985-05-08 電元オートメーシヨン株式会社 Posture detection of pie in automatic mah-jongg table
JPS6096281A (en) * 1983-10-31 1985-05-29 電元オートメーシヨン株式会社 Detection of pie posture in automatic mah-jongg table
JPS60108069A (en) * 1983-11-18 1985-06-13 電元オートメーシヨン株式会社 Pie posture detecting method in automatic mah-jongg table
JPS60176677A (en) * 1984-02-24 1985-09-10 電元オ−トメ−シヨン株式会社 Detection of pie posture in automatic mahjongg table
JPH03114488A (en) * 1990-08-31 1991-05-15 Takamitsu Kakinuma Tile selecting device of automatic mah-jongg device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036007A (en) * 1973-08-04 1975-04-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036007A (en) * 1973-08-04 1975-04-04

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58200760A (en) * 1982-05-20 1983-11-22 柿沼　孝光 Automatic mahjong apparatus
JPS5920187A (en) * 1982-07-23 1984-02-01 井上　芳男 Pie feeder in mahjong pie automatic aligning machine
JPS5967982A (en) * 1982-10-12 1984-04-17 柿沼　孝光 Method and apparatus for discriminating photoelectric prede-termined direction of pie
JPH0360515B2 (en) * 1982-10-12 1991-09-13 Takamitsu Kakinuma
JPS59108582A (en) * 1982-12-10 1984-06-23 電元オ−トメ−ション株式会社 Pie washing and arrangement apparatus in automatic mahjong table
JPH0326059B2 (en) * 1982-12-10 1991-04-09 Dengen Automation Kk
JPS6080475A (en) * 1983-10-11 1985-05-08 電元オートメーシヨン株式会社 Posture detection of pie in automatic mah-jongg table
JPS6096281A (en) * 1983-10-31 1985-05-29 電元オートメーシヨン株式会社 Detection of pie posture in automatic mah-jongg table
JPS60108069A (en) * 1983-11-18 1985-06-13 電元オートメーシヨン株式会社 Pie posture detecting method in automatic mah-jongg table
JPS60176677A (en) * 1984-02-24 1985-09-10 電元オ−トメ−シヨン株式会社 Detection of pie posture in automatic mahjongg table
JPH0433474B2 (en) * 1984-02-24 1992-06-03 Dengen Automation Kk
JPH03114488A (en) * 1990-08-31 1991-05-15 Takamitsu Kakinuma Tile selecting device of automatic mah-jongg device

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