IT1316796B1 - Dispositivo circuitale per recuperare la simmetria di un segnaleanalogico ricavato da una lettura di dati da supporti magnetici - Google Patents

Dispositivo circuitale per recuperare la simmetria di un segnaleanalogico ricavato da una lettura di dati da supporti magnetici

Info

Publication number
IT1316796B1
IT1316796B1 IT2000MI000469A ITMI20000469A IT1316796B1 IT 1316796 B1 IT1316796 B1 IT 1316796B1 IT 2000MI000469 A IT2000MI000469 A IT 2000MI000469A IT MI20000469 A ITMI20000469 A IT MI20000469A IT 1316796 B1 IT1316796 B1 IT 1316796B1
Authority
IT
Italy
Prior art keywords
recover
symmetry
reading
data
circuit device
Prior art date
Application number
IT2000MI000469A
Other languages
English (en)
Inventor
Valerio Pisati
Marco Demicheli
Melchiorre Bruccoleri
Original Assignee
St Microelectronics Srl
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 St Microelectronics Srl filed Critical St Microelectronics Srl
Priority to IT2000MI000469A priority Critical patent/IT1316796B1/it
Publication of ITMI20000469A0 publication Critical patent/ITMI20000469A0/it
Priority to US09/802,748 priority patent/US6707623B2/en
Publication of ITMI20000469A1 publication Critical patent/ITMI20000469A1/it
Application granted granted Critical
Publication of IT1316796B1 publication Critical patent/IT1316796B1/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • H03F3/45632—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit
    • H03F3/45744—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by offset reduction
    • H03F3/45766—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by offset reduction by using balancing means
    • H03F3/45771—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by offset reduction by using balancing means using switching means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Magnetic Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Amplifiers (AREA)
IT2000MI000469A 2000-03-09 2000-03-09 Dispositivo circuitale per recuperare la simmetria di un segnaleanalogico ricavato da una lettura di dati da supporti magnetici IT1316796B1 (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT2000MI000469A IT1316796B1 (it) 2000-03-09 2000-03-09 Dispositivo circuitale per recuperare la simmetria di un segnaleanalogico ricavato da una lettura di dati da supporti magnetici
US09/802,748 US6707623B2 (en) 2000-03-09 2001-03-08 Circuit device for restoring the symmetry of an analog signal originated by the reading of data from magnetic supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2000MI000469A IT1316796B1 (it) 2000-03-09 2000-03-09 Dispositivo circuitale per recuperare la simmetria di un segnaleanalogico ricavato da una lettura di dati da supporti magnetici

Publications (3)

Publication Number Publication Date
ITMI20000469A0 ITMI20000469A0 (it) 2000-03-09
ITMI20000469A1 ITMI20000469A1 (it) 2001-09-09
IT1316796B1 true IT1316796B1 (it) 2003-05-12

Family

ID=11444393

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2000MI000469A IT1316796B1 (it) 2000-03-09 2000-03-09 Dispositivo circuitale per recuperare la simmetria di un segnaleanalogico ricavato da una lettura di dati da supporti magnetici

Country Status (2)

Country Link
US (1) US6707623B2 (it)
IT (1) IT1316796B1 (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7161752B1 (en) 2003-11-05 2007-01-09 Marvell International Ltd. Asymmetric compensation circuit
US7092180B2 (en) * 2004-04-01 2006-08-15 Agere Systems Inc. Asymmetry correction for magneto-resistive heads

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786890A (en) * 1987-07-28 1988-11-22 International Business Machines Corporation Method and apparatus for implementing a PRML code
EP0763887B1 (en) * 1995-09-14 2000-03-22 STMicroelectronics S.r.l. Circuit for automatically regulating the gain of a differential amplifier
US6043943A (en) * 1996-12-31 2000-03-28 Stmicroelectronics, Inc. Asymmetry correction for a read head
US6510012B1 (en) * 2000-07-28 2003-01-21 Texas Instruments Incorporated High-speed CMOS buffer circuit with programmable quadratic transfer function
US6529340B2 (en) * 2000-12-29 2003-03-04 International Business Machines Corporation Asymmetry correction circuit

Also Published As

Publication number Publication date
ITMI20000469A1 (it) 2001-09-09
ITMI20000469A0 (it) 2000-03-09
US20010040746A1 (en) 2001-11-15
US6707623B2 (en) 2004-03-16

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