JPS5778611A - Digital signal reproducing method - Google Patents

Digital signal reproducing method

Info

Publication number
JPS5778611A
JPS5778611A JP55153417A JP15341780A JPS5778611A JP S5778611 A JPS5778611 A JP S5778611A JP 55153417 A JP55153417 A JP 55153417A JP 15341780 A JP15341780 A JP 15341780A JP S5778611 A JPS5778611 A JP S5778611A
Authority
JP
Japan
Prior art keywords
digital signal
comparator
signal
recording medium
threshold level
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
JP55153417A
Other languages
Japanese (ja)
Other versions
JPS6232547B2 (en
Inventor
Tsuneo Hirose
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP55153417A priority Critical patent/JPS5778611A/en
Publication of JPS5778611A publication Critical patent/JPS5778611A/en
Publication of JPS6232547B2 publication Critical patent/JPS6232547B2/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
    • G11B20/10—Digital recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To remove the duty distortion of a recording medium against a recording electric signal, by shaping a waveform of an extracting digital signal whose band has been limited, by a comparator whose threshold level is controlled, and reproducing a digital signal. CONSTITUTION:A digital signal recorded in a recording medium 1 is extracted by a ditial signal extracting means 3 and is outputted to a band limiting means 4. Subsequently, a comparator 5 as a digital signal reproducing means forms a waveform in accordance with a set threshold level and reproduces a digital signal. In this case, a time measuring instrument 6 measures the time of a positive level section and a negative level section of an output signal of the comparator 5, and in accordance with a result of this measurement, the threshold level of the comparator 5 is controlled by a thershold level controller 7. In this way, the duty distortion against a recording electric signal, which has been generated in the recording medium 1 is removed at the time of reproduction.
JP55153417A 1980-10-31 1980-10-31 Digital signal reproducing method Granted JPS5778611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55153417A JPS5778611A (en) 1980-10-31 1980-10-31 Digital signal reproducing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55153417A JPS5778611A (en) 1980-10-31 1980-10-31 Digital signal reproducing method

Publications (2)

Publication Number Publication Date
JPS5778611A true JPS5778611A (en) 1982-05-17
JPS6232547B2 JPS6232547B2 (en) 1987-07-15

Family

ID=15562038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55153417A Granted JPS5778611A (en) 1980-10-31 1980-10-31 Digital signal reproducing method

Country Status (1)

Country Link
JP (1) JPS5778611A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211314A (en) * 1982-06-01 1983-12-08 Nippon Columbia Co Ltd Signal detecting circuit
JPS598112A (en) * 1982-07-06 1984-01-17 Sanyo Electric Co Ltd Slice level adjusting circuit
JPS6050628A (en) * 1983-08-27 1985-03-20 Olympus Optical Co Ltd Optical type recording and reproducing device
JPS60223319A (en) * 1984-02-29 1985-11-07 アメリカン　マイクロシステムズ，インコ−ポレイテツド Frequency doubler having 50percent duty cycle output signal
JPS60229275A (en) * 1984-04-25 1985-11-14 Fujitsu Ltd Information reproducing device
JPH02119410A (en) * 1988-09-09 1990-05-07 United Technol Corp <Utc> High-accuracy 50% duty cycle controller
JP2006303554A (en) * 2005-04-15 2006-11-02 Renesas Technology Corp Logical level conversion circuit and phase synchronization circuit employing it
JP2006319856A (en) * 2005-05-16 2006-11-24 Sanyo Electric Co Ltd Communication device for refrigeration system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1012785A (en) * 1996-06-21 1998-01-16 Nec Corp Surface mount component lead correction device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132246U (en) * 1978-03-16 1978-10-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132246U (en) * 1978-03-16 1978-10-20

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211314A (en) * 1982-06-01 1983-12-08 Nippon Columbia Co Ltd Signal detecting circuit
JPS598112A (en) * 1982-07-06 1984-01-17 Sanyo Electric Co Ltd Slice level adjusting circuit
JPS6050628A (en) * 1983-08-27 1985-03-20 Olympus Optical Co Ltd Optical type recording and reproducing device
JPS60223319A (en) * 1984-02-29 1985-11-07 アメリカン　マイクロシステムズ，インコ−ポレイテツド Frequency doubler having 50percent duty cycle output signal
JPS60229275A (en) * 1984-04-25 1985-11-14 Fujitsu Ltd Information reproducing device
JPH02119410A (en) * 1988-09-09 1990-05-07 United Technol Corp <Utc> High-accuracy 50% duty cycle controller
JP2006303554A (en) * 2005-04-15 2006-11-02 Renesas Technology Corp Logical level conversion circuit and phase synchronization circuit employing it
JP2006319856A (en) * 2005-05-16 2006-11-24 Sanyo Electric Co Ltd Communication device for refrigeration system

Also Published As

Publication number Publication date
JPS6232547B2 (en) 1987-07-15

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