JPS5446020A - Demodulation circuit - Google Patents

Demodulation circuit

Info

Publication number
JPS5446020A
JPS5446020A JP11240977A JP11240977A JPS5446020A JP S5446020 A JPS5446020 A JP S5446020A JP 11240977 A JP11240977 A JP 11240977A JP 11240977 A JP11240977 A JP 11240977A JP S5446020 A JPS5446020 A JP S5446020A
Authority
JP
Japan
Prior art keywords
signal
inter
period
digit
blanking
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
JP11240977A
Other languages
Japanese (ja)
Inventor
Michio Mita
Fumiyoshi Abe
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP11240977A priority Critical patent/JPS5446020A/en
Publication of JPS5446020A publication Critical patent/JPS5446020A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To surely perform demodulation of phase modulation digital signals of a constant inter-digit spacing and dirrerent level shift sectins by letting the quantization signal corresponding to a certain inter-digit spacing of a desired blacking period inter-digit spacing of a disired blanking period be a gate signal.
CONSTITUTION: When the edge signal TO of the SMPTE code signal in which inter-digit spacings are constant and binary digital values ar subjected to phase modulation by level shift and CLOCK are applied to up-down counters 14, 16 of 1/N times and M times, the blanking signal of the period M/N times the one inter-digit spacing is outputted from terminal 18. If the signal TP is detected with this blanking period T3 as a gate period, the binary digital 1 of the SAMPTE signal is demodulated. Hence, demodulation of the SMPTE time codes, etc. having been recoeded in magnetic tape, etc. is surely affected by the signal of a requeied blanking period without affecting the tape speed, etc. at the repeoduction
COPYRIGHT: (C)1979,JPO&Japio
JP11240977A 1977-09-19 1977-09-19 Demodulation circuit Pending JPS5446020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11240977A JPS5446020A (en) 1977-09-19 1977-09-19 Demodulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11240977A JPS5446020A (en) 1977-09-19 1977-09-19 Demodulation circuit

Publications (1)

Publication Number Publication Date
JPS5446020A true JPS5446020A (en) 1979-04-11

Family

ID=14585918

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11240977A Pending JPS5446020A (en) 1977-09-19 1977-09-19 Demodulation circuit

Country Status (1)

Country Link
JP (1) JPS5446020A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594364A (en) * 1982-06-30 1984-01-11 Mitsubishi Electric Corp Single line synchronism type receiver
JPS6037857A (en) * 1983-08-10 1985-02-27 Nec Corp Fm transmission system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991419A (en) * 1972-12-29 1974-08-31
JPS5059016A (en) * 1973-09-26 1975-05-22
JPS5085320A (en) * 1973-11-27 1975-07-09

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991419A (en) * 1972-12-29 1974-08-31
JPS5059016A (en) * 1973-09-26 1975-05-22
JPS5085320A (en) * 1973-11-27 1975-07-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594364A (en) * 1982-06-30 1984-01-11 Mitsubishi Electric Corp Single line synchronism type receiver
JPS6037857A (en) * 1983-08-10 1985-02-27 Nec Corp Fm transmission system
JPH0352699B2 (en) * 1983-08-10 1991-08-12 Nippon Electric Co

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