FR2376582B1 - Circuits detecteurs de signal du type a canal double - Google Patents

Circuits detecteurs de signal du type a canal double

Info

Publication number: FR2376582B1
Authority: FR; France
Prior art keywords: channel type; signal sensor; type signal; dual channel; sensor circuits
Prior art date: 1976-12-30
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.): Expired

Application number

FR7738268A

Other languages

English (en)

Other versions

FR2376582A1 (fr

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.)

Sperry Corp

Original Assignee

Sperry 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.)

1976-12-30

Filing date

1977-12-19

Publication date

1985-06-28

1977-12-19 Application filed by Sperry Corp filed Critical Sperry Corp

1978-07-28 Publication of FR2376582A1 publication Critical patent/FR2376582A1/fr

1985-06-28 Application granted granted Critical

1985-06-28 Publication of FR2376582B1 publication Critical patent/FR2376582B1/fr

Status Expired legal-status Critical Current

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
- G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
- 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
- G11B5/027—Analogue recording
- G11B5/035—Equalising
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
- H03K5/1532—Peak detectors

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Physics & Mathematics (AREA)
Nonlinear Science (AREA)
Digital Magnetic Recording (AREA)
Signal Processing For Digital Recording And Reproducing (AREA)
Dc Digital Transmission (AREA)

FR7738268A 1976-12-30 1977-12-19 Circuits detecteurs de signal du type a canal double Expired FR2376582B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/755,875 US4081756A (en)	1976-12-30	1976-12-30	Dual channel signal detector circuit

Publications (2)

Publication Number	Publication Date
FR2376582A1 FR2376582A1 (fr)	1978-07-28
FR2376582B1 true FR2376582B1 (fr)	1985-06-28

Family

ID=25041036

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7738268A Expired FR2376582B1 (fr)	1976-12-30	1977-12-19	Circuits detecteurs de signal du type a canal double

Country Status (10)

Country	Link
US (1)	US4081756A (fr)
JP (1)	JPS53107807A (fr)
CA (1)	CA1097750A (fr)
CH (1)	CH628455A5 (fr)
DE (1)	DE2756740C2 (fr)
ES (1)	ES465416A1 (fr)
FR (1)	FR2376582B1 (fr)
GB (1)	GB1590746A (fr)
IT (1)	IT1143798B (fr)
SE (1)	SE416853B (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4276573A (en) *	1979-06-29	1981-06-30	Datapoint Corporation	Pulse shaping network for disc read circuitry
US4323932A (en) *	1979-07-30	1982-04-06	Sperry Corporation	Readback pulse compensator
ZA805184B (en) *	1979-08-31	1981-08-26	Int Computers Ltd	Magnetic recording systems
US4264935A (en) *	1980-04-09	1981-04-28	Sperry Corporation	Balanced tapped delay line spectral shaping differentiation circuit for signal detection
US4319288A (en) *	1980-04-09	1982-03-09	Sperry Corporation	Current injection tapped delay line spectral shaping equalizer and differentiator
US4327383A (en) *	1980-09-26	1982-04-27	Siemens Corporation	Read circuit for a floppy disk drive
US4453255A (en) *	1981-02-05	1984-06-05	Victor Company Of Japan, Ltd.	Characteristic control system for a digital equalizer
US4346411A (en) *	1981-02-17	1982-08-24	International Business Machines Corporation	Amplitude sensitive three-level detector for derivative read back channel of magnetic storage device
US4468787A (en) *	1981-11-09	1984-08-28	Lear Siegler, Inc.	Ternary data transmission system
US4561027A (en) *	1982-11-29	1985-12-24	Rca Corporation	Rotating D.C. coupled record amplifier for digital magnetic recording
DE3370391D1 (en) *	1982-12-01	1987-04-23	Ibm	Systems for reading magnetic recordings
US4517610A (en) *	1982-12-09	1985-05-14	Magnetic Peripherals Inc.	Multichannel signal recovery circuit
US4626933A (en) *	1983-08-18	1986-12-02	Amcodyne Incorporated	Method and apparatus for qualifying data
US4531165A (en) *	1983-09-30	1985-07-23	International Business Machines Corporation	Automatic amplitude equalizer based upon monitoring of channel power loss
US4580176A (en) *	1983-11-21	1986-04-01	International Business Machines Corporation	Adaptive equalization circuit for magnetic recording channels utilizing signal timing
JPH0775107B2 (ja) *	1986-07-25	1995-08-09	株式会社日立製作所	磁気記録装置の信号再生回路
USRE36671E (en) *	1987-02-06	2000-04-25	Seagate Technology, Inc.	Dual channel readback recovery system
US4760472A (en) *	1987-02-06	1988-07-26	Magnetic Peripherals Inc.	Dual channel readback recovery system
US4789838A (en) *	1987-03-23	1988-12-06	Cheng Jyi Min	Pulse detection circuit using amplitude and time qualification
US4771188A (en) *	1987-03-23	1988-09-13	Cheng Jyi Min	Adaptive threshold adjustment method and apparatus
US4916556A (en) *	1987-05-28	1990-04-10	Apple Computer, Inc.	Disk drive controller
US5068753A (en) *	1988-03-16	1991-11-26	Fujitsu Limited	Data reproducing circuit for memory system having an equalizer generating two different equalizing signals used for data reproduction
US5120985A (en) *	1989-01-31	1992-06-09	Fujitsu Limited	Data reproducing circuit for correcting amplitude variation and peak shift
JP2519179Y2 (ja) *	1989-03-29	1996-12-04	矢崎総業株式会社	電気コネクタにおける端子金具の二重係止構造
EP0390724B1 (fr) *	1989-03-31	1995-10-04	Fujitsu Limited	Circuit d'enregistrement et de reproduction de données
US5032934A (en) *	1989-08-18	1991-07-16	Teac Corporation	Magnetic disc apparatus with a cosine equalizer and specific gap length head
JPH03102677A (ja) *	1989-09-14	1991-04-30	Sharp Corp	情報再生装置
JP2767960B2 (ja) *	1990-02-28	1998-06-25	松下電器産業株式会社	記録媒体の検査方法および検査装置ならびに記録再生装置の検査方法
US5270874A (en) *	1991-02-14	1993-12-14	International Business Machines Corporation	Dropout simulation in a magnetic tape subsystem
US5367535A (en) *	1992-02-21	1994-11-22	Deutsche Thomson-Brandt Gmbh	Method and circuit for regenerating a binary bit stream from a ternary signal
JP2948016B2 (ja) *	1992-03-19	1999-09-13	株式会社日立製作所	情報記録再生方法
US5550683A (en) *	1992-12-11	1996-08-27	Eastman Kodak Company	Magnetic recording channel employing a non-ideal d.c.-free equalizer and a d.c.-free modulation code
US5424881A (en) *	1993-02-01	1995-06-13	Cirrus Logic, Inc.	Synchronous read channel
US5519548A (en) *	1993-03-31	1996-05-21	Hewlett-Packard Company	Using read channel noise to initialize read channel for head position calibration in a magnetic data storage device
US6870358B2 (en) *	2001-12-31	2005-03-22	Baes Systems Information And Electronic Systems Integration Inc.	Methods and apparatuses for peak detection among multiple signals

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3505537A (en) *	1967-03-09	1970-04-07	Rca Corp	Signal envelope discriminator and gating circuit
US3524994A (en) *	1967-08-21	1970-08-18	Control Data Corp	Signal recovering apparatus
US3516066A (en) *	1968-03-15	1970-06-02	Rca Corp	Readback circuit for information storage systems
US3631263A (en) *	1970-01-09	1971-12-28	Ibm	Signal detection circuit
US3647964A (en) *	1970-02-24	1972-03-07	Ibm	Run-length-limited coding for modified raised-cosine equalization channel
US3775759A (en) *	1972-01-21	1973-11-27	Ibm	Magnetic recording and readback systems with raised cosine equalization
US3760282A (en) *	1972-03-29	1973-09-18	Ibm	Data recovery system
US3864734A (en) *	1973-01-05	1975-02-04	Bell & Howell Co	Pulse-code modulation detector and equalizer

1976
- 1976-12-30 US US05/755,875 patent/US4081756A/en not_active Expired - Lifetime
1977
- 1977-11-29 CA CA291,926A patent/CA1097750A/fr not_active Expired
- 1977-12-19 FR FR7738268A patent/FR2376582B1/fr not_active Expired
- 1977-12-20 DE DE2756740A patent/DE2756740C2/de not_active Expired
- 1977-12-21 GB GB53352/77A patent/GB1590746A/en not_active Expired
- 1977-12-23 ES ES465416A patent/ES465416A1/es not_active Expired
- 1977-12-27 CH CH1602677A patent/CH628455A5/de not_active IP Right Cessation
- 1977-12-29 SE SE7714921A patent/SE416853B/sv not_active IP Right Cessation
- 1977-12-29 IT IT31411/77A patent/IT1143798B/it active
- 1977-12-30 JP JP16099277A patent/JPS53107807A/ja active Granted

Also Published As

Publication number	Publication date
CA1097750A (fr)	1981-03-17
DE2756740C2 (de)	1983-11-03
DE2756740A1 (de)	1978-07-06
JPS53107807A (en)	1978-09-20
JPS6228503B2 (fr)	1987-06-20
SE416853B (sv)	1981-02-09
ES465416A1 (es)	1978-09-16
IT1143798B (it)	1986-10-22
GB1590746A (en)	1981-06-10
FR2376582A1 (fr)	1978-07-28
US4081756A (en)	1978-03-28
CH628455A5 (de)	1982-02-26
SE7714921L (sv)	1978-07-01

Publication	Publication Date	Title
FR2376582B1 (fr)	1985-06-28	Circuits detecteurs de signal du type a canal double
SE424138B (sv)	1982-07-05	Hjertsignalsdetektor
DK196177A (da)	1977-11-06	Fotoelektrisk signalfrembringgnde kredslob
BR7707941A (pt)	1978-08-15	Comutador de pressao
SE7704964L (sv)	1977-10-31	Signaldetektor
BR7705319A (pt)	1978-06-06	Decodificador de sinais acusticos digitais
NL188197C (nl)	1992-04-16	Signaalontvanger.
SE7600260L (sv)	1977-07-14	Beroringsfri signaloverforing
NL7805989A (nl)	1978-12-05	Digitale signaalselectie- of -detectieschakeling.
NL178640C (nl)	1986-04-16	Digitale signaalbewerkingsinrichting.
NL7702986A (nl)	1977-09-21	Signaalprocessor.
NL7702680A (nl)	1977-09-13	Signaalweergeefinrichting.
NO143246C (no)	1981-01-07	Signalgiveranlegg.
SE414852B (sv)	1980-08-18	Kopplingskrets for avkenning av storsignaler
GB1553250A (en)	1979-09-26	Unidirectional signal paths
AU510177B2 (en)	1980-06-12	Tone signal detecting circuit
BE872420A (fr)	1979-05-30	Commutateur a double sensibilite
PL200016A1 (pl)	1978-04-10	Mechanizm zmiany biegow
SE7700546L (sv)	1977-07-23	Signalbehandlare
NL7705978A (nl)	1977-12-05	Hoogfrequent-signaalkoppelinrichting.
NL184646C (nl)	1989-09-18	Signaalmeetapparaat.
JPS52147959A (en)	1977-12-08	Signal output circuit
FI783494A (fi)	1979-05-19	Oevervakningsanordning foer gaongvaeg ansluten till en tidsmultiplexkopplad kopplingskrets foer en kodad signal
NL186547C (nl)	1990-12-17	Signaaltransmissie-inrichting.
NL185645C (nl)	1990-06-01	Videosignaalcombinatieschakeling.

Legal Events

Date	Code	Title	Description
1993-10-29	ST	Notification of lapse