CA977406A - Degaussing device for colour cathode ray tubes - Google Patents

Degaussing device for colour cathode ray tubes

Info

Publication number: CA977406A
Authority: CA; Canada
Prior art keywords: cathode ray; ray tubes; colour cathode; degaussing device; degaussing
Prior art date: 1972-04-14
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

CA168,642A

Other versions

CA168642S (en

Inventor

Yoshiichi Matsushima

Toshiyuki Abe

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.)

Toshiba Corp

Original Assignee

Tokyo Shibaura 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.)

1972-04-14

Filing date

1973-04-09

Publication date

1975-11-04

1972-04-14 Priority claimed from JP3756272A external-priority patent/JPS48104430A/ja

1972-04-14 Priority claimed from JP3755672A external-priority patent/JPS5644626B2/ja

1972-06-17 Priority claimed from JP6005572A external-priority patent/JPS4922037A/ja

1973-04-09 Application filed by Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd

1975-11-04 Application granted granted Critical

1975-11-04 Publication of CA977406A publication Critical patent/CA977406A/en

Status Expired legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
- H01J2229/0046—Preventing or cancelling fields within the enclosure
- H01J2229/0053—Demagnetisation

Landscapes

Physics & Mathematics (AREA)
Electromagnetism (AREA)
Video Image Reproduction Devices For Color Tv Systems (AREA)

CA168,642A 1972-04-14 1973-04-09 Degaussing device for colour cathode ray tubes Expired CA977406A (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date
JP3756272A JPS48104430A (en)	1972-04-14	1972-04-14
JP3755672A JPS5644626B2 (en)	1972-04-14	1972-04-14
JP6005572A JPS4922037A (en)	1972-06-17	1972-06-17

Publications (1)

Publication Number	Publication Date
CA977406A true CA977406A (en)	1975-11-04

Family

ID=27289506

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA168,642A Expired CA977406A (en)	1972-04-14	1973-04-09	Degaussing device for colour cathode ray tubes

Country Status (8)

Country	Link
US (1)	US3872347A (en)
CA (1)	CA977406A (en)
DE (1)	DE2319262B2 (en)
FR (1)	FR2180067B1 (en)
GB (1)	GB1425748A (en)
IT (1)	IT980156B (en)
NL (1)	NL163403C (en)
SE (1)	SE395814B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL167289C (en) *	1973-09-13	1981-11-16	Philips Nv	COLOR TELEVISION DEVICE EQUIPPED WITH A COLOR TELEVISION IMAGE TUBE AND DEMAGNETIZING DEVICE.
US4316119A (en) *	1979-02-16	1982-02-16	Rca Corporation	Tilted unitary degaussing coil arrangement
SE441886B (en) *	1979-02-16	1985-11-11	Rca Corp	NEUTRALIZATION DEVICE FOR A PREVIOUS TELEVISION IMAGE
US4445072A (en) *	1982-09-29	1984-04-24	Motorola, Inc.	CRT Degaussing system
JPS60218693A (en) *	1984-04-13	1985-11-01	三菱電機株式会社	Display unit
IN167955B (en) *	1986-03-27	1991-01-12	Nokia Data Systems
DE3625383A1 (en) *	1986-07-26	1988-02-04	Grundig Emv	DE-MAGNETIZING DEVICE FOR A COLOR TV TUBE
FR2606574B1 (en) *	1986-11-07	1989-01-13	Videocolor	DEVICE FOR PROTECTING CATHODE RAY TUBES WITH A MASK AGAINST THE EARTH MAGNETIC FIELD
FR2639409B1 (en) *	1988-11-24	1990-12-28	Loire Electronique	DEVICE FOR FIXING A TELEVISION DEMAGNETIZING LOOP
IT1251351B (en) *	1990-06-25	1995-05-08	Videocolor Spa	APPARATUS FOR COMPENSATION OF MAGNETIC FIELDS
JPH0541176A (en) *	1991-08-07	1993-02-19	Sony Corp	Cathode-ray tube
WO1996013050A1 (en) *	1994-10-21	1996-05-02	Philips Electronics N.V.	Colour display device comprising a colour display tube and a demagnetizing device
US5815361A (en) *	1995-04-03	1998-09-29	Samsung Electronics Co., Ltd.	Magnetic field shielding device in display
KR100265172B1 (en) *	1996-02-24	2000-09-15	윤종용	The degaussing coil fixing apparatus of monitor
KR19990022672A (en) *	1996-04-09	1999-03-25	엠. 제이. 엠. 반캄	Display device having display tube with external shield for the earth's magnetic field
US5959824A (en) *	1998-03-25	1999-09-28	Data Security, Inc.	Transient magnetic field degaussing system with auto calibration
US5969933A (en) *	1998-03-25	1999-10-19	Data Security, Inc.	Transient magnet field degaussing system
US6671007B1 (en) *	1999-12-30	2003-12-30	Thomson Licensing, S.A.	Method and apparatus for mounting a degaussing coil
US6731491B2 (en)	2001-06-15	2004-05-04	Data Security, Inc.	Bulk degausser with fixed arrays of magnet poles
US6686695B2 (en) *	2001-10-16	2004-02-03	Samsung Sdi Co., Ltd.	Cathode ray tube having degaussing coil for minimizing variations in landing of electron beam
US7164569B1 (en)	2004-06-30	2007-01-16	Data Security, Inc.	Mechanism for automated permanent magnet degaussing
US20060018075A1 (en)	2004-07-23	2006-01-26	Data Security, Inc.	Permanent magnet bulk degausser
US7701656B2 (en) *	2006-07-14	2010-04-20	Data Security, Inc.	Method and apparatus for permanent magnet erasure of magnetic storage media
US7715166B2 (en) *	2006-07-14	2010-05-11	Data Security, Inc.	Method and reciprocating apparatus for permanent magnet erasure of magnetic storage media
US20090284890A1 (en) *	2008-05-16	2009-11-19	Thiel Leroy D	Mechanism and Method for Permanent Magnet Degaussing
JP2014209521A (en) *	2013-04-16	2014-11-06	キヤノン株式会社	Stage device, drawing device and method for manufacturing article

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3317781A (en) *	1963-12-19	1967-05-02	Rca Corp	Television degaussing apparatus
US3614519A (en) *	1967-12-18	1971-10-19	Zenith Radio Corp	Cathode-ray tube magnetic shield

1973
- 1973-04-09 US US349637A patent/US3872347A/en not_active Expired - Lifetime
- 1973-04-09 CA CA168,642A patent/CA977406A/en not_active Expired
- 1973-04-10 GB GB1716573A patent/GB1425748A/en not_active Expired
- 1973-04-11 IT IT49358/73A patent/IT980156B/en active
- 1973-04-13 FR FR7313397A patent/FR2180067B1/fr not_active Expired
- 1973-04-13 NL NL7305174.A patent/NL163403C/en not_active IP Right Cessation
- 1973-04-13 SE SE7305261A patent/SE395814B/en unknown
- 1973-04-16 DE DE19732319262 patent/DE2319262B2/en not_active Ceased

Also Published As

Publication number	Publication date
SE395814B (en)	1977-08-22
DE2319262B2 (en)	1977-08-25
NL7305174A (en)	1973-10-16
GB1425748A (en)	1976-02-18
US3872347A (en)	1975-03-18
FR2180067A1 (en)	1973-11-23
IT980156B (en)	1974-09-30
NL163403B (en)	1980-03-17
FR2180067B1 (en)	1976-09-03
DE2319262A1 (en)	1973-10-31
NL163403C (en)	1980-08-15

Publication	Publication Date	Title
CA977406A (en)	1975-11-04	Degaussing device for colour cathode ray tubes
CA954963A (en)	1974-09-17	Display apparatus utilizing cathode ray tubes
CA937971A (en)	1973-12-04	Cathode ray tube apparatus
CA955640A (en)	1974-10-01	Color cathode ray tube
CA960742A (en)	1975-01-07	Color cathode ray tube arrangement
CA987383A (en)	1976-04-13	Cathode ray tube
CA982207A (en)	1976-01-20	Mislanding corrector for color cathode ray tubes
CA930009A (en)	1973-07-10	Cathode ray tubes
HK36376A (en)	1976-06-25	Colour cathode ray tube display system
CA998270A (en)	1976-10-12	Correcting lens for color cathode ray tubes
AU466321B2 (en)	1975-10-23	Degaussing device for colour cathode ray tubes
AU4461972A (en)	1974-01-24	Colour picture cathode ray tube
AU455382B2 (en)	1974-11-21	Colour display cathode ray tube
CA974566A (en)	1975-09-16	Cathode-ray tube for displaying colour pictures
IE37030B1 (en)	1977-04-13	A colour cathode ray tube display system
AU463537B2 (en)	1975-07-31	Shadow-mask colour picture cathode ray tube
CA894402A (en)	1972-02-29	Color cathode ray tube
CA912631A (en)	1972-10-17	Color cathode ray tube
AU463380B2 (en)	1972-10-12	Cathode ray tube apparatus
CA917227A (en)	1972-12-19	Implosion-resistant cathode ray tubes
CA893843A (en)	1972-02-22	Cathode ray tube
CA894401A (en)	1972-02-29	Cathode ray tube
CA894968A (en)	1972-03-07	Cathode ray tube
AU478680B2 (en)	1974-10-24	Cathode ray tube
CA905474A (en)	1972-07-18	Cathode ray tube