WO1990000799A1 - Cassette video a compteur de visionnements - Google Patents

Cassette video a compteur de visionnements Download PDF

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Publication number
WO1990000799A1
WO1990000799A1 PCT/DE1989/000442 DE8900442W WO9000799A1 WO 1990000799 A1 WO1990000799 A1 WO 1990000799A1 DE 8900442 W DE8900442 W DE 8900442W WO 9000799 A1 WO9000799 A1 WO 9000799A1
Authority
WO
WIPO (PCT)
Prior art keywords
video
video cassette
cassette
counter
cassette according
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.)
Ceased
Application number
PCT/DE1989/000442
Other languages
German (de)
English (en)
Inventor
Wolfgang Schüler
Helmut Bresslein
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
Priority claimed from DE19893919676 external-priority patent/DE3919676A1/de
Application filed by Individual filed Critical Individual
Publication of WO1990000799A1 publication Critical patent/WO1990000799A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G11B23/0875—Indicating means, e.g. quantity of tape
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 

Definitions

  • Video cassette with a counter for displaying plays
  • the invention relates to a video cassette with a counter for displaying the number of plays in a video recorder of the type specified in the preamble of claim 1.
  • German utility model 82 23 693 discloses a sticker for checking video cassettes for illegal opening and / or illegal exchange or copying of the magnetic tape.
  • This sticker can not only be checked for optical integrity, but also has individual electrical parameters which can only be checked for authenticity by a suitable device. In this way, it can be checked in a very simple manner whether the video cassette returned by the lending customers still receives the same sticker as before the loan.
  • This video cassette has neither a counter for the number of plays nor a device for limiting the number of plays.
  • a magnetic tape cassette for video devices is known from US Pat. No. 4,593,337, in which a counter for counting the plays of the magnetic tape is arranged. The count signal is triggered by the magnetic tape or by another movable part of the cassette.
  • a locking device which takes effect after reaching a certain number of plays, is also not available here.
  • US Pat. No. 4,466,584 discloses a cassette with a device which shows the number of plays in a counter displays and blocks further play of the magnetic tape after a predetermined number of plays.
  • two rotatably mounted wheels are arranged in the cassette, of which one wheel is designed as a counting wheel with a display and the other wheel has a stop which, after a certain number of plays, locks another with a cassette-fixed stop Play process engaged.
  • the distributor of the video cassettes has the possibility to unlock the lock again. that further plays of the magnetic tape are possible.
  • a special key is required to reset the ratchet wheel.
  • the device for counting the plays and for locking the cassette after a certain number of plays is quite complex and complicated. Incidentally, in this known cassette, a first half counting step is recorded when the magnetic tape is played and the second half counting step when rewinding.
  • The. invention has for its object to provide a video cassette for video recorders which ensures a falsification-proof display of the number of plays of the magnetic tape in a video cassette and which reliably prevents further play of the magnetic tape with the simplest components after reaching a specified number of plays.
  • This object is achieved by the invention characterized in claim 1.
  • the Mag ⁇ etbandkassette according to the invention has simple and easy to assemble components that ensure a tamper-proof display of plays of the magnetic tape and a lock after a certain number of plays take effect, such that z. B. in the case of video cassettes, the last play before the video cassette is finally locked still transmits clear video recordings.
  • FIG. 1 shows a plan view of a first exemplary embodiment of part of a video cassette with a counter and a locking device
  • FIG. 2 shows a detail from FIG. 1,
  • FIG. 3 shows a detail from FIG. 1,
  • FIG. 4 shows a device for controlling an electronic counter
  • Figure 5 is a plan view of a second embodiment for and
  • FIGS. 6 to 8 show details from FIG. 1.
  • FIGS. 1 and 2 show a cassette housing with a cassette upper part 3 and a cassette lower part 48 for a video cassette 63.
  • This cassette upper part 3 has a bearing pin 2 for a counting wheel 1 which is inserted into the video recorder each time the video cassette 63 is inserted is advanced by a step in the direction A, see Figure 1.
  • a movable component is arranged in the cassette housing, which can be moved out of a rest position when the video cassette 63 is inserted into the video recorder and thereby increments the counter.
  • a lock prevents the video cassette 63 from being played again, thereby ensuring that the picture quality is also good when the magnetic tape is last played back.
  • the counter consists of a counting wheel 1, which is coded 16, e.g. B. in the form of digits to display the Number of plays is provided through a window 64 in the cassette upper part 3 and which has a toothing 9 on its circumference, which can be acted upon by a switching tooth 8 on the movable component in order to advance the counter 1 by one increment.
  • this movable component consists of a lever 5, which is pivotably mounted on a cover flap 4 about a bolt 6 and is acted upon by a spring 7 such that the switching tooth 8 of the lever 5 is always in the toothing 9 of the counting wheel 1 is pressed securely.
  • the cover plate 4 is arranged in the cassette housing 3, 48 so as to be pivotable about bearing axes 69 from a position covering the magnetic tape into a position releasing it.
  • the cover flap 4 is pivoted out of the closed position, the lever 5 advancing the counting wheel 1 by one increment via the switching tooth 8.
  • the cover flap 4 returns to the closed position.
  • the toothing 9 is incidentally on the entire circumference of the counting wheel 1, which, however, can only be rotated until a locking lever 10 with a blocking nose 66 engages in a first step 11 on a circumferential surface 67 of the counting wheel 1 in direction B.
  • This stop edge 68 prevents the video cassette 63 from being reinserted into the video recorder.
  • the video cassette 63 can then be inserted for playback if the pawl 14 is pressed into the cassette housing 3, 48 beforehand.
  • the locking lug 66 then passes into a second stage 17, which is arranged lower and through which the pawl is assumed when the locking lever 10 engages in such a way that the stop edge 68 can no longer be reset into the cassette housing 3, 48.
  • the locking lever 10 is by means of a spring 12 can be pivoted about a bearing axis 65 in the cassette housing 3, 48.
  • the cam 18 arrives at the locking lever 10 under a stop arm 19 of the locking pawl 14.
  • a locking pawl of the locking lever 10 engages in the toothing 9 of the counting wheel 1, whereby the counter wheel 1 is blocked, incidentally there is also a pawl 31 with the toothing 9 always engaged, which locks the counting wheel 1 when the lever 5 is returned to the starting position.
  • the pawl 14 is • pivoted about a bearing axis 74.
  • the upper part of the cassette 3 also has a setting 20, through which one can grip with a pin into the toothing 9 in order to be able to turn the counting wheel 1 by a certain amount in direction A if the specified play options are not to be used further. An adjustment of the counter wheel 1 against the direction A is not possible because the lever 5 locks with its switching tooth 8 in the toothing 9 in this direction.
  • the lower part of the cassette 48 and the upper part 3 of the cassette are secured against opening by a label 21 which is stuck on.
  • the cassette housing 3, 48 also has an opening in the area of the locking lever 10 such that the pawl 14 can be brought back into its rest position without having to open the video cassette 63. This opening is secured with a label.
  • FIG. $ Shows an electronic counter 23 which is operated by means of a battery and also has a display.
  • the counter 23 receives an electrical switching pulse when the video cassette 63 is inserted into the video recorder by the lever 5 in that this (5) closes a contact 22. With each switching pulse, the counter 23 is incremented by one step.
  • the magnet 24 is energized via an amplifier and pulls the lever 25, which can be pivoted about a bearing axis 30, against a spring 26 from its rest position.
  • the pawl 29 is released and follows the spring 15 in the direction C long until the locking spring 28 jumps in front of the locking edge 76 of the pawl 29.
  • a second locking edge 77 comes out of the cassette housing in such a way that it is not possible to push the video cassette 63 into the cassette recorder again. Due to the locking action of the locking spring 28, it is also no longer possible to push the pawl 29 back into the cassette housing.
  • the spring 26 in the form of a leaf spring is fastened to the cassette housing with an articulation point 27, while the pawl 29 is pivotably mounted about an axis 73.
  • FIGS. 7 to 7 A second embodiment is shown in FIGS. 7 to 7, the movable component consisting of a slide 32 which has a bend 33 with a link 34 into which a round extension 35 of a pivotable flap 36 has a positive fit intervenes.
  • the flap 36 In its initial position, the flap 36 has a stop arm 79 which is arranged parallel to the bottom surface 78 and which, when the video cassette 63 is placed on the receiving device 81, is acted upon by a stop bolt 80 arranged thereon (81) for displacing the slide 32 .
  • the flap 36 When the video cassette 63 is removed from the video recorder, the flap 36 is automatically reset by spring force. This resetting can be done by the spring-loaded slide 32 alone, but according to FIGS. 4 and 5 this pivoting back of the flap 36 is also supported by a tension spring 82.
  • This tension spring 82 is articulated between the free ends of stop arms 49, 89 of two pawls 43, 83 which are pivotally mounted about bearing axes 52, 92.
  • These locking pawls 43, 83 each have a locking arm 50, 90, each with a locking tooth 51, 91, which can be brought into engagement with teeth 53, 93 arranged on flanges 55, 95 of the solenoid coils 54, 84 if the video cassettes 63 are located outside the cassette recorder.
  • the pawls 43, 83 With the onset the video cassette 63 in the cassette recorder and the resulting pivoting of the flap 36, the pawls 43, 83 with their locking teeth 51, 91 are brought out of engagement with the teeth 53, 93, the tension spring 82 being compressed and thus tensioned.
  • the pawls 43, 83 can also be reset by means of individual springs.
  • the slide 32 When the flap 36 is pivoted out of the initial position, the slide 32 is displaced such that the toothing 38 of the counting wheel 39 is acted upon via its tooth 37.
  • the link 34 is designed to the slide direction of the slide 32 such that the slide 32 is pushed over the round extension 35 on the flap 36, by the way the link 34 is designed such that the slide 32 is locked by the flap 36 in the rest position becomes.
  • an enlarging lens 40 is arranged above the cassette window.
  • the slider 32 is made of resilient bronze sheet and has a switching tooth 37 and a spring arm on a tongue 71, which pushes the slider 32 into the starting position again after the video cassette 63 has been removed from the video recorder 4 from a resilient arm 86 which rests resiliently with a stop 87 on a cassette-fixed stop 88, such that the slide 32 is always acted upon in the direction of its rest position.
  • the spring arm according to FIG. 5 can likewise consist of two bends 41 and 42, of which the bend 42 is supported on the cassette housing 3. Furthermore, the slide 32 according to FIG 5 with recesses 44, 46 which can be brought into abutment with stops 46, 47 on the cassette housing 3, 48 to limit the displacement movement of the slide 32.
  • the pawls 43, 83 are pivoted out of engagement with the teeth 53, 93 of the magnetic tape reel 54, 94, the slide 32 is pressed in the direction D.
  • the resilient tongue 71 pushes the counting wheel 39 by one tooth pitch over the switching tooth 37.
  • the counting wheel 39 is rotatably mounted on a round shoulder 96 of the cassette upper part 3 and is held on this by an arm 73 of an angle 57 (FIG. 3).
  • the angle 57 is firmly connected to the upper part 3 of the cassette.
  • a locking pawl 58 is fastened to the upper part of the cassette, which has a locking lug 60 on a resilient tongue 59, which falls through a cutout 61 in the counting wheel 39 for locking the magnetic tape reel 54, the locking lug 60 in a cutout 62 in the flange 55 Magnetic tape reel 54 can be snapped into place. This securely locks the magnetic tape reel 54. Since the pawl 58 can no longer be reset, further plays of the video cassette 63 are no longer possible.
  • the resilient tongue 59 of the pawl 58 presses against the surface of the counting wheel 39 with such a frictional force that the counting wheel 39 is secured against reverse rotation when the slide 32 is pushed back into its starting position.
  • the slide 32 has on its underside spaced sliding bosses 71, which reduce the frictional force between the slide 32 and the body part of the cassette housing 3, 48. Incidentally, the slide 32 is guided through the upper and lower part of the cassette.
  • the cover flap 4 is made of transparent material, so that the position of the magnetic tape 85 can be easily checked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Abstract

Il est nécessaire de contrôler le nombre de visionnements d'une cassette vidéo. A cet effet, les cassettes vidéo connues sont pourvues d'un compteur incrémenté d'une unité après chaque visionnement. En outre, les cassettes vidéo connues sont pourvues de dispositifs de verrouillage qui s'activent lorsqu'un nombre déterminé de visionnements est atteint. L'invention permet de contrôler la cassette vidéo avec des éléments très simples. Dans le logement de la cassette est agencé un élément mobile qui quitte sa position de repos à chaque fois que la cassette vidéo (63) est introduite dans le magnétoscope, ajoutant une unité au compteur, et lorsque le compteur enregistre une valeur déterminée, un verrou qui empêche des visionnements ultérieurs de la cassette vidéo (63) est actionné. La cassette à bande magnétique décrite comprend des éléments simples et faciles à monter qui assurent une indication à l'épreuve de falsifications du nombre de visionnements de la bande magnétique et qui actionnent un verrou après un nombre déterminé de visionnements, de sorte que dans le cas de cassettes vidéo par exemple, la reproduction des enregistrements vidéo est nette jusqu'au dernier visionnement avant le blocage définitif de la cassette vidéo.
PCT/DE1989/000442 1988-07-12 1989-07-05 Cassette video a compteur de visionnements Ceased WO1990000799A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DEP3823501.3 1988-07-12
DE3823501 1988-07-12
DEP3903097.0 1989-02-02
DE3903097 1989-02-02
DEP3911652.2 1989-04-01
DE3911652 1989-04-01
DE19893919676 DE3919676A1 (de) 1988-07-12 1989-06-16 Videokassette mit einem zaehler zum anzeigen von abspielungen
DEP3919676.3 1989-06-16

Publications (1)

Publication Number Publication Date
WO1990000799A1 true WO1990000799A1 (fr) 1990-01-25

Family

ID=27434259

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000442 Ceased WO1990000799A1 (fr) 1988-07-12 1989-07-05 Cassette video a compteur de visionnements

Country Status (1)

Country Link
WO (1) WO1990000799A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3238175A1 (de) * 1981-11-13 1983-05-19 TDK Electronics Co., Ltd., Tokyo Bandkassette mit zaehlwerk
GB2121002A (en) * 1982-05-25 1983-12-14 Harry Lambert Tape cassette with counter
US4466584A (en) * 1980-12-12 1984-08-21 Check View System S.A. Apparatus for counting and limiting the number of plays of a cassette
EP0169514A2 (fr) * 1984-07-21 1986-01-29 Sony Corporation Cassette à bande magnétique avec mécanisme de blocage des bobines
US4593337A (en) * 1983-03-16 1986-06-03 Alfredo Leone Video cassette play counting, storing and reading system
EP0187241A2 (fr) * 1984-12-08 1986-07-16 Agfa-Gevaert AG Mécanisme de verrouillage pour cassettes vidéo
EP0266983A2 (fr) * 1986-10-31 1988-05-11 David H. Rubenstein Système de cassette à bande à lecture limitée

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466584A (en) * 1980-12-12 1984-08-21 Check View System S.A. Apparatus for counting and limiting the number of plays of a cassette
DE3238175A1 (de) * 1981-11-13 1983-05-19 TDK Electronics Co., Ltd., Tokyo Bandkassette mit zaehlwerk
GB2121002A (en) * 1982-05-25 1983-12-14 Harry Lambert Tape cassette with counter
US4593337A (en) * 1983-03-16 1986-06-03 Alfredo Leone Video cassette play counting, storing and reading system
EP0169514A2 (fr) * 1984-07-21 1986-01-29 Sony Corporation Cassette à bande magnétique avec mécanisme de blocage des bobines
EP0187241A2 (fr) * 1984-12-08 1986-07-16 Agfa-Gevaert AG Mécanisme de verrouillage pour cassettes vidéo
EP0266983A2 (fr) * 1986-10-31 1988-05-11 David H. Rubenstein Système de cassette à bande à lecture limitée

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