JPS6423613A - Dc restoration circuit - Google Patents

Dc restoration circuit

Info

Publication number
JPS6423613A
JPS6423613A JP17929987A JP17929987A JPS6423613A JP S6423613 A JPS6423613 A JP S6423613A JP 17929987 A JP17929987 A JP 17929987A JP 17929987 A JP17929987 A JP 17929987A JP S6423613 A JPS6423613 A JP S6423613A
Authority
JP
Japan
Prior art keywords
adder
output
digital signals
low
discriminator
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
JP17929987A
Other languages
Japanese (ja)
Inventor
Kenichi Sato
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP17929987A priority Critical patent/JPS6423613A/en
Publication of JPS6423613A publication Critical patent/JPS6423613A/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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • G11B20/10203—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter baseline correction

Landscapes

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

Abstract

PURPOSE:To accurately compensate the base-line fluctuation of digital signals caused by interception of low frequencies so as to prevent wrong data, by adding the output of a 2nd adder to the digital signals at a 1st adder. CONSTITUTION:The titled circuit is provided with the 1st adder 2 which inputs transmitted or reproduced digital signals, a discriminator 5 which discriminates data from the output of the adder 2, a band-pass filter 9 and low-pass filter 10 which extract the low-frequency components from the output of the discriminator 5 after band division, and a 2nd adder 11 which adds the outputs of the two filters to each other. This DC restoration circuit is constituted to impress the output of the 2nd adder 11 upon the 1st adder 2. Therefore, compensation can be performed on transmitted or reproduced digital signals even when their low-frequency intercepting characteristic is complicated and wrong data are reduced.
JP17929987A 1987-07-17 1987-07-17 Dc restoration circuit Pending JPS6423613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17929987A JPS6423613A (en) 1987-07-17 1987-07-17 Dc restoration circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17929987A JPS6423613A (en) 1987-07-17 1987-07-17 Dc restoration circuit

Publications (1)

Publication Number Publication Date
JPS6423613A true JPS6423613A (en) 1989-01-26

Family

ID=16063398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17929987A Pending JPS6423613A (en) 1987-07-17 1987-07-17 Dc restoration circuit

Country Status (1)

Country Link
JP (1) JPS6423613A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393633A2 (en) * 1989-04-19 1990-10-24 Sanyo Electric Co., Ltd. Low frequency component restoration circuit for restoring and compensating for low frequency component lost in digital signal transmission system
EP0830669A1 (en) * 1995-05-26 1998-03-25 Maxtor Corporation Mr head read signal preconditioning circuitry

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116761B2 (en) * 1975-06-06 1986-05-02 Mitsubishi Reiyon Kk
JPS61123064A (en) * 1984-11-20 1986-06-10 Sanyo Electric Co Ltd Digital signal processing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116761B2 (en) * 1975-06-06 1986-05-02 Mitsubishi Reiyon Kk
JPS61123064A (en) * 1984-11-20 1986-06-10 Sanyo Electric Co Ltd Digital signal processing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393633A2 (en) * 1989-04-19 1990-10-24 Sanyo Electric Co., Ltd. Low frequency component restoration circuit for restoring and compensating for low frequency component lost in digital signal transmission system
EP0830669A1 (en) * 1995-05-26 1998-03-25 Maxtor Corporation Mr head read signal preconditioning circuitry
EP0830669A4 (en) * 1995-05-26 1998-12-23 Maxtor Corp Mr head read signal preconditioning circuitry
US5943177A (en) * 1995-05-26 1999-08-24 Maxtor Corporation MR head read signal preconditioning circuitry for reducing pulse -to-pulse baseline distortion
US6366417B1 (en) 1995-05-26 2002-04-02 Maxtor Corporation Mr head read signal preconditioning circuitry

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