JPS5392108A - Intensity signal recorder - Google Patents

Intensity signal recorder

Info

Publication number
JPS5392108A
JPS5392108A JP665577A JP665577A JPS5392108A JP S5392108 A JPS5392108 A JP S5392108A JP 665577 A JP665577 A JP 665577A JP 665577 A JP665577 A JP 665577A JP S5392108 A JPS5392108 A JP S5392108A
Authority
JP
Japan
Prior art keywords
intensity signal
signal recorder
dubbing
controlling
predetermined value
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
JP665577A
Other languages
Japanese (ja)
Other versions
JPS6213874B2 (en
Inventor
Masahiro Kanbara
Minoru Morio
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 JP665577A priority Critical patent/JPS5392108A/en
Publication of JPS5392108A publication Critical patent/JPS5392108A/en
Publication of JPS6213874B2 publication Critical patent/JPS6213874B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00688—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that a usable copy of recorded data can be made on another medium
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To prevent recorded tape from dubbing by controlling a mu-tuning switching circuit provided in an intensity signal path when the decision signal of the phase comparison output of synchronous signals exceeds predetermined value.
JP665577A 1977-01-24 1977-01-24 Intensity signal recorder Granted JPS5392108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP665577A JPS5392108A (en) 1977-01-24 1977-01-24 Intensity signal recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP665577A JPS5392108A (en) 1977-01-24 1977-01-24 Intensity signal recorder

Publications (2)

Publication Number Publication Date
JPS5392108A true JPS5392108A (en) 1978-08-12
JPS6213874B2 JPS6213874B2 (en) 1987-03-30

Family

ID=11644382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP665577A Granted JPS5392108A (en) 1977-01-24 1977-01-24 Intensity signal recorder

Country Status (1)

Country Link
JP (1) JPS5392108A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240912A (en) * 1975-09-26 1977-03-30 Matsushita Electric Ind Co Ltd Disk-type magnetic record reproduction equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240912A (en) * 1975-09-26 1977-03-30 Matsushita Electric Ind Co Ltd Disk-type magnetic record reproduction equipment

Also Published As

Publication number Publication date
JPS6213874B2 (en) 1987-03-30

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