EP0198889A1 - Dispositif de protection contre l'effacement des cassettes audio ou video a bande magnetique - Google Patents

Dispositif de protection contre l'effacement des cassettes audio ou video a bande magnetique

Info

Publication number
EP0198889A1
EP0198889A1 EP85905316A EP85905316A EP0198889A1 EP 0198889 A1 EP0198889 A1 EP 0198889A1 EP 85905316 A EP85905316 A EP 85905316A EP 85905316 A EP85905316 A EP 85905316A EP 0198889 A1 EP0198889 A1 EP 0198889A1
Authority
EP
European Patent Office
Prior art keywords
scanning
tape
extinguishing
scanning device
track
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.)
Withdrawn
Application number
EP85905316A
Other languages
German (de)
English (en)
Inventor
Peter ZÜHLKE
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0198889A1 publication Critical patent/EP0198889A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
    • G11B23/08707—Details
    • G11B23/08714—Auxiliary features
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/06—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape
    • G11B15/07—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape on containers

Definitions

  • the invention relates to an erasure protection for audio or video magnetic tape cassettes with a closed housing according to the preamble of claim 1.
  • the commercially available audio and video magnetic tape cassettes have a break-out closure on the rear narrow side for an opening. If this closure is broken out, a loosening of the tape is impossible and thus any unintentional deletion is excluded with certainty. This is achieved in that in the recording or. Playback device a key arrangement is provided which triggers a deletion lock when the lock has broken out.
  • these known cassettes there are therefore only two states, namely "erasable” or “not erasable”.
  • the invention has for its object to provide a backup that prevents deletion of the tape only in a predetermined first tape section.
  • the drawing figure shows a top view of an opened cassette 10, which is both a
  • Audio as well as a video cassette 10 can act.
  • the scanning arrangement 18 can either be supported directly on the tape reel 20 or can be connected to the tape reel 20 via suitable scanning elements, for example a scanning roller 25.
  • a spiral groove 21 can also be provided on the inside or outside of the coil body or the lateral boundary surfaces, which is delimited by a circular track 22, 23 both in the smallest and the largest radius and with these circular tracks 22, 23 communicates.
  • the scanning element runs back from the outer circular track 23 into the spiral track 21.
  • This ensures that the scanning element merges into the spiral track 21 of predetermined length at the latest after one revolution and triggers the desired deflection movement of the spring rocker 17, while conversely, after one revolution at the latest, a transition of the scanning element from the inner circular track 22 to the spiral track 21 is ensured.
  • the scanning device 18 is supported directly on the tape reel 20, it is advantageous if the support is carried out only in the lateral edge zones in which there is no magnetic image or sound recording.
  • the scanning element can be a needle-like guide which engages in a recessed track 21, 22, 23.
  • it can also be a scanning roller with a circumferential groove, wherein this circumferential groove scans a raised track.
  • a scanning device 18 with a roller with a wheel flange is also conceivable, the wheel flange engaging in a recessed track, as is similarly the case with rail vehicles.
  • the mounting of the scanning arrangement 18, which is preferably designed as a spring rocker 17, can be designed as a pivot bearing 24, which allows movements in one direction or the other under the influence of the support spring 19 or against the pressure of the support spring 19.
  • the pivot bearing 24 can also be designed as a swivel joint and an arm of the scanning device 18 can be spring-loaded.
  • At least one delimitation of the surface 16 can be provided with cutting edges 26 which cut through an approximately manipulation of the adhesive strips used for the cassette.
  • a spontaneous adjustment of the surface 16 from one end position to the other can be achieved by interposing a microswitch between the scanning arrangement 18 and the surface 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Abstract

Un dispositif de protection contre l'effacement des cassettes audio ou vidéo à bande magnétique, qui empêche l'effacement seulement dans une première partie prédéterminée de la bande. De cette manière, il est possible de conserver, sur la première partie non effaçable de la bande, des informations importantes ou constamment requises, ou des informations semblables, alors que le reste de la bande peut être effacé et re-enregistré à tout moment, au souhait de l'utilisateur.
EP85905316A 1984-10-19 1985-10-14 Dispositif de protection contre l'effacement des cassettes audio ou video a bande magnetique Withdrawn EP0198889A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8431128U 1984-10-19
DE19848431128U DE8431128U1 (de) 1984-10-19 1984-10-19 Loeschsperre fuer audio- und video-magnetband-kassetten

Publications (1)

Publication Number Publication Date
EP0198889A1 true EP0198889A1 (fr) 1986-10-29

Family

ID=6771993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85905316A Withdrawn EP0198889A1 (fr) 1984-10-19 1985-10-14 Dispositif de protection contre l'effacement des cassettes audio ou video a bande magnetique

Country Status (5)

Country Link
EP (1) EP0198889A1 (fr)
JP (1) JPS62500619A (fr)
KR (1) KR880700413A (fr)
DE (2) DE8431128U1 (fr)
WO (1) WO1986002481A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190070562A1 (en) * 2016-03-14 2019-03-07 Daicel Corporation External-pressure type hollow fiber membrane module

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0466008B1 (fr) * 1990-07-07 1996-10-02 TDK Corporation Cassette à bande

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692956A (en) * 1970-11-20 1972-09-19 Collins Radio Co Sealed magnetic tape cassette apparatus
FR2129050A5 (fr) * 1971-03-12 1972-10-27 Polydict
US3995319A (en) * 1974-12-26 1976-11-30 Action Design Limited Tape recorder cassette adapted to indicate the number of times the tape is played
US3950786A (en) * 1975-02-07 1976-04-13 K/Tronic, Inc. Magnetic tape cassette with sliding door to inhibit recording
MC1447A1 (fr) * 1980-12-12 1982-12-06 Check View Syst Dispositif de comptage du nombre de passages pour la lecture d'une cassette a rubans ou films,supports de sons et/ou d'images ou autres signaux,et/ou de blocage au-dela d'un nombre de passages determines au prealable
US4564871A (en) * 1983-12-27 1986-01-14 Minnesota Mining And Manufacturing Company Automatic record-lockout mechanism

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8602481A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190070562A1 (en) * 2016-03-14 2019-03-07 Daicel Corporation External-pressure type hollow fiber membrane module

Also Published As

Publication number Publication date
DE8431128U1 (de) 1985-02-14
KR880700413A (ko) 1988-03-15
JPS62500619A (ja) 1987-03-12
WO1986002481A1 (fr) 1986-04-24
DE3438840C1 (de) 1986-01-23

Similar Documents

Publication Publication Date Title
DE3107591C2 (de) Bandaufzeichnungs- und/oder -wiedergabevorrichtung zur Verminderung des Übersprechens von auf benachbarten Spuren aufgezeichneten digitalen Informationssignalen
DE69321805T2 (de) Magnetbandkassette mit Bandführungsblockverriegelungsmechanismus
DE1537240A1 (de) Kassetten-Magnetaufzeichnungs- und -wiedergabegeraet
EP0114246B1 (fr) Appareil à bande magnétique
DE3201589A1 (de) Adapter fuer eine kleinbandkassette
DE2131731A1 (de) Bandkassette
DE3415808A1 (de) Bandkassette
DE69112854T2 (de) Bandkassette.
DE2557519C3 (de) Bandkassette mit Bandspulen-Bremsvorrichtung
DE3146594A1 (de) Kleinbandkassette
DE69219974T2 (de) Kassettenlade- und Entlademechanismus und Kassette zur Verwendung darin
DE69112452T2 (de) Bandkassette-Lademechanismus.
DE2926956B2 (de) Magnetbandkassette mit Löschsperre
EP0198889A1 (fr) Dispositif de protection contre l'effacement des cassettes audio ou video a bande magnetique
DE2318641C3 (de) Kassettentonbandgerät
DE69511313T2 (de) Löschsperrengehäuse für Einzelspulenkassette
DE2604172A1 (de) Fuer kassettenrekorder vorgesehene compactcassette
DE69938069T2 (de) Bandkassette
DE69428850T2 (de) Bandkassette
DE3050313C2 (de) Staubschutzeinrichtung zur Verwendung in einem Magnetbandgerät
EP0528300B1 (fr) Cassette avec support d'enregistrement, notamment cassette à bande magnétique
DE3224243A1 (de) Miniatur-bandkassette
DE3626569C2 (fr)
DE3213621A1 (de) Bandkassette und kassettenrecorder
DE3146597C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19860616

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880503