JPS57176516A - Pcm signal device - Google Patents

Pcm signal device

Info

Publication number
JPS57176516A
JPS57176516A JP6161981A JP6161981A JPS57176516A JP S57176516 A JPS57176516 A JP S57176516A JP 6161981 A JP6161981 A JP 6161981A JP 6161981 A JP6161981 A JP 6161981A JP S57176516 A JPS57176516 A JP S57176516A
Authority
JP
Japan
Prior art keywords
control signal
processing
serial
control
input
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
JP6161981A
Other languages
Japanese (ja)
Other versions
JPH0413787B2 (en
Inventor
Makoto Namekawa
Yukihiko Haikawa
Takeshi Onishi
Masayuki Ishida
Toshikatsu Taketomi
Masakazu Shiromizu
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.)
ARUPAIN KK
Akai Electric Co Ltd
Alpine Electronics Inc
Mitsubishi Electric Corp
Original Assignee
ARUPAIN KK
Akai Electric Co Ltd
Alpine Electronics Inc
Mitsubishi Electric 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 ARUPAIN KK, Akai Electric Co Ltd, Alpine Electronics Inc, Mitsubishi Electric Corp filed Critical ARUPAIN KK
Priority to JP6161981A priority Critical patent/JPS57176516A/en
Publication of JPS57176516A publication Critical patent/JPS57176516A/en
Publication of JPH0413787B2 publication Critical patent/JPH0413787B2/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
    • 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
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To cope with future use of an undefined control signal, by enabling to make parallel and serial processings for the input and output of a control signal for a PCM signal. CONSTITUTION:Parallel input processing is made, when control signals of logical 0 and 1 are applied to a serial input terminal 37 of a lock input circuit 8 and parallel input terminals 39 and 40 respectively with a control signal of a recording LSI7. A preemphasis discrimination and dubbing inhibiting code of the control signal inputted in parallel with the terminals 39 and 40 becomes a control signal combined with a PCM recording signal via NAND gates 29-31 in clock control and an NAND gate 33 opened for 1H period. Serial processing is made when a control signal of logical 1 is applied to the terminal 37 only. This can also be applied to the processing of the control signal via a control signal block output circuit 10 of the LSI7, a reproduction LSI11, and a control LSI9, and serial processing can be made for future processing of an undefined control signal without providing an external circuit, allowing a PCM signal device with high conventionality.
JP6161981A 1981-04-23 1981-04-23 Pcm signal device Granted JPS57176516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6161981A JPS57176516A (en) 1981-04-23 1981-04-23 Pcm signal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6161981A JPS57176516A (en) 1981-04-23 1981-04-23 Pcm signal device

Publications (2)

Publication Number Publication Date
JPS57176516A true JPS57176516A (en) 1982-10-29
JPH0413787B2 JPH0413787B2 (en) 1992-03-10

Family

ID=13176365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6161981A Granted JPS57176516A (en) 1981-04-23 1981-04-23 Pcm signal device

Country Status (1)

Country Link
JP (1) JPS57176516A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136955A (en) * 1983-12-26 1985-07-20 Hitachi Ltd Digital signal recording/reproducing method
EP0224929A2 (en) * 1985-12-04 1987-06-10 Sony Corporation Apparatus and method for preventing unauthorized dubbing of a recording signal
US5418853A (en) * 1992-07-24 1995-05-23 Sony Corporation Apparatus and method for preventing unauthorized copying of video signals

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136955A (en) * 1983-12-26 1985-07-20 Hitachi Ltd Digital signal recording/reproducing method
EP0224929A2 (en) * 1985-12-04 1987-06-10 Sony Corporation Apparatus and method for preventing unauthorized dubbing of a recording signal
US5418853A (en) * 1992-07-24 1995-05-23 Sony Corporation Apparatus and method for preventing unauthorized copying of video signals
USRE36763E (en) * 1992-07-24 2000-07-04 Sony Corporation Apparatus and method for preventing unauthorized copying of video signals

Also Published As

Publication number Publication date
JPH0413787B2 (en) 1992-03-10

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