GB2022874B - Automatic azimuth correction of magnetic head gaps - Google Patents

Automatic azimuth correction of magnetic head gaps

Info

Publication number: GB2022874B
Authority: GB; United Kingdom
Prior art keywords: magnetic head; azimuth correction; head gaps; automatic azimuth; automatic
Prior art date: 1978-05-29
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

GB7918351A

Other versions

GB2022874A (en

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.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken NV

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.)

1978-05-29

Filing date

1979-05-25

Publication date

1983-04-27

1978-05-29 Priority claimed from NL7805803A external-priority patent/NL7805803A/en

1978-05-29 Priority claimed from NL7805801A external-priority patent/NL7805801A/en

1979-05-25 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1979-12-19 Publication of GB2022874A publication Critical patent/GB2022874A/en

1983-04-27 Application granted granted Critical

1983-04-27 Publication of GB2022874B publication Critical patent/GB2022874B/en

Status Expired legal-status Critical Current

Classifications

- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/56—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering

GB7918351A 1978-05-29 1979-05-25 Automatic azimuth correction of magnetic head gaps Expired GB2022874B (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
NL7805803A NL7805803A (en)	1978-05-29	1978-05-29	AZIMUTH CORRECTION OF CUTS.
NL7805801A NL7805801A (en)	1978-05-29	1978-05-29	MAGNET HEAD.

Publications (2)

Publication Number	Publication Date
GB2022874A GB2022874A (en)	1979-12-19
GB2022874B true GB2022874B (en)	1983-04-27

Family

ID=26645425

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB7918351A Expired GB2022874B (en)	1978-05-29	1979-05-25	Automatic azimuth correction of magnetic head gaps

Country Status (10)

Country	Link
AT (1)	AT365355B (en)
AU (1)	AU530671B2 (en)
CH (1)	CH647613A5 (en)
DE (1)	DE2920912C2 (en)
ES (1)	ES8100518A1 (en)
FR (1)	FR2427659B1 (en)
GB (1)	GB2022874B (en)
IT (1)	IT1118702B (en)
NO (1)	NO151101C (en)
NZ (1)	NZ190547A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4525696A (en) *	1980-11-28	1985-06-25	Minnesota Mining & Manufacturing Company	Driver for rotating a magnetic playback head
NL8103833A (en) *	1981-08-17	1983-03-16	Philips Nv	DEVICE FOR DISPLAYING INFORMATION IN A TRACK OF A MAGNETIC RECORD CARRIER.
US4577302A (en) *	1983-03-14	1986-03-18	Dolby Laboratories Licensing Corporation	Apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise
DE3546829C2 (en) *	1983-11-29	1992-11-19	Sharp K.K., Osaka, Jp	Multi-track magnetic tape system with track alignment control
DE3521437A1 (en) *	1983-11-29	1986-12-18	Sharp K.K., Osaka	MULTI-TRACK MAGNETIC TAPE DEVICE AND METHOD FOR TRACKING ITS PLAYBACK HEADS
CN100534399C (en)	2004-12-31	2009-09-02	斯恩蒂斯有限公司	Intramedullary nail

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2938962A (en) *	1955-07-12	1960-05-31	Konins	Azimuth seeking reproducing head
US3246307A (en) *	1962-05-22	1966-04-12	Ibm	Servo positioning system for magnetic disk file
NL154607B (en) *	1966-03-09	1977-09-15	Philips Nv	MAGNETIC HEAD SYSTEM EQUIPPED WITH TWO MAGNETIC CONTROL CIRCUITS FOR CORRECT POSITIONING ON A TRACK.
US3526726A (en) *	1967-09-27	1970-09-01	Ampex	Piezoelectric transducer assembly for positioning a magnetic record/reproduce head
US3678220A (en) *	1971-05-26	1972-07-18	Ibm	Angulated positioning marks for moving web
US3900888A (en) *	1972-10-03	1975-08-19	Nakamichi Research	Process for detecting and adjusting a vertical orientation of magnetic heads and apparatus therefor
NL7309590A (en) *	1973-07-10	1975-01-14	Philips Nv	DEVICE FOR CONTROLLING THE POSITION OF A MAGNETIC HEAD WITH REGARD TO AN INFORMATION TRACK TO BE TRACKED.
GB1470735A (en) *	1975-06-18	1977-04-21	Ibm	Servo positioning systems for magnetic disc recording
US4055849A (en) *	1976-04-15	1977-10-25	Eastman Kodak Company	Magnetic head positioning and playback apparatus utilizing a split head for self-tracking and selective reproduction

1979
- 1979-05-23 DE DE2920912A patent/DE2920912C2/en not_active Expired
- 1979-05-25 GB GB7918351A patent/GB2022874B/en not_active Expired
- 1979-05-25 NZ NZ190547A patent/NZ190547A/en unknown
- 1979-05-25 ES ES480924A patent/ES8100518A1/en not_active Expired
- 1979-05-25 CH CH4906/79A patent/CH647613A5/en not_active IP Right Cessation
- 1979-05-25 IT IT68132/79A patent/IT1118702B/en active
- 1979-05-25 NO NO791725A patent/NO151101C/en unknown
- 1979-05-28 AU AU47487/79A patent/AU530671B2/en not_active Ceased
- 1979-05-29 FR FR7913645A patent/FR2427659B1/en not_active Expired
- 1979-05-29 AT AT0392579A patent/AT365355B/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
NZ190547A (en)	1982-03-16
IT7968132A0 (en)	1979-05-25
AT365355B (en)	1982-01-11
FR2427659A1 (en)	1979-12-28
NO151101B (en)	1984-10-29
AU530671B2 (en)	1983-07-28
ES480924A0 (en)	1980-11-01
DE2920912A1 (en)	1979-12-13
ES8100518A1 (en)	1980-11-01
AU4748779A (en)	1979-12-06
FR2427659B1 (en)	1988-06-24
ATA392579A (en)	1981-05-15
NO791725L (en)	1979-11-30
GB2022874A (en)	1979-12-19
DE2920912C2 (en)	1987-04-02
IT1118702B (en)	1986-03-03
NO151101C (en)	1985-02-06
CH647613A5 (en)	1985-01-31

Publication	Publication Date	Title
JPS5584020A (en)	1980-06-24	Thinnfilm magnetic head
JPS5587323A (en)	1980-07-02	Thinnfilm magnetic head assembly
AU530056B2 (en)	1983-06-30	Stabilized magnetic shields
GB2026946B (en)	1982-07-14	Sucurity magnetic recording supports
JPS5638686A (en)	1981-04-13	Method of digitalizing coil position
GB2045004B (en)	1982-09-15	Automatic cassette head demagnetiser
AU531734B2 (en)	1983-09-01	Positioning of recording heads
JPS5562566A (en)	1980-05-12	Gasket for magnetic tape
GB2015233B (en)	1982-03-17	Magnetic head assembly
JPS5681565A (en)	1981-07-03	Manufacture of nnheterocyclic compound
GB2022874B (en)	1983-04-27	Automatic azimuth correction of magnetic head gaps
GB2040099B (en)	1983-01-26	Azimuth angle correction of magnetic heads
JPS5692278A (en)	1981-07-25	Manufacture of dibenzazolyl compound
JPS55115890A (en)	1980-09-06	Manufacture of diorganomagnesium compound
GB2060308B (en)	1983-08-03	Method of tracking a target
JPS54143612A (en)	1979-11-09	Magnetic head
JPS55115885A (en)	1980-09-06	Manufacture of 33hydroxy compound
JPS55104223A (en)	1980-08-09	Manufacture of alphaahydroxycarbonyl compound
GB2019633A (en)	1979-10-31	Magnetic recording
JPS55113789A (en)	1980-09-02	Manufacture of betaalactam compound
JPS54161919A (en)	1979-12-22	Method of manufacturing combination magnetic head
JPS54120898A (en)	1979-09-19	Preparation of highhdensity ferrite
BG32499A1 (en)	1982-08-16	Method for mounting of anchor constructions
JPS5478460A (en)	1979-06-22	Multiiwinding method of coil
JPS53114408A (en)	1978-10-05	Method of making magnetic recording tape

Legal Events

Date	Code	Title	Description
1999-06-16	PE20	Patent expired after termination of 20 years	Effective date: 19990524