JPS57117116A - Reproducing device for digital signal - Google Patents

Reproducing device for digital signal

Info

Publication number
JPS57117116A
JPS57117116A JP289481A JP289481A JPS57117116A JP S57117116 A JPS57117116 A JP S57117116A JP 289481 A JP289481 A JP 289481A JP 289481 A JP289481 A JP 289481A JP S57117116 A JPS57117116 A JP S57117116A
Authority
JP
Japan
Prior art keywords
high frequency
circuit
output
reproducing signal
reproducing
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
JP289481A
Other languages
Japanese (ja)
Inventor
Hiroshi Yoshioka
Takao Takahashi
Masahiko Machida
Tokuya Fukuda
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 JP289481A priority Critical patent/JPS57117116A/en
Publication of JPS57117116A publication Critical patent/JPS57117116A/en
Pending 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
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To compensate the deterioration in high frequency characteristics due to spacing loss, by detecting the increase in the spacing loss caused by dropout through the reduction in a reproducing signal level and making high frequency compensation at a negative feedback loop. CONSTITUTION:An output of a variable high frequency gain compensation circuit 5 is applied to a reproducing signal level detecting circuit 6 and amplitude of a reproducing NRZ signal is detected. The output of this circuit 6 is applied to a subtractor 7 to obtain an output of difference between the reference level from a reference DC power supply 8 and the output of the detection circuit 6, and this output difference is fed back to the circuit 5. In the circuit 5, the high frequency gain is changed in accordance with the envelope of a reproducing signal, and high frequency gain is increased in phase-linear by an amount corresponding to the lowering in the envelope of the reproducing signal for the spacing loss to compensate the high frequency. Thus, the deterioration in the high frequency can be compensated.
JP289481A 1981-01-12 1981-01-12 Reproducing device for digital signal Pending JPS57117116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP289481A JPS57117116A (en) 1981-01-12 1981-01-12 Reproducing device for digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP289481A JPS57117116A (en) 1981-01-12 1981-01-12 Reproducing device for digital signal

Publications (1)

Publication Number Publication Date
JPS57117116A true JPS57117116A (en) 1982-07-21

Family

ID=11542060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP289481A Pending JPS57117116A (en) 1981-01-12 1981-01-12 Reproducing device for digital signal

Country Status (1)

Country Link
JP (1) JPS57117116A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439299A2 (en) * 1990-01-23 1991-07-31 International Business Machines Corporation A circuit for suppressing additive disturbances in data channels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439299A2 (en) * 1990-01-23 1991-07-31 International Business Machines Corporation A circuit for suppressing additive disturbances in data channels

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