WO2000005878A1 - Improved monitor for video gate keeper - Google Patents

Improved monitor for video gate keeper Download PDF

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Publication number
WO2000005878A1
WO2000005878A1 PCT/ES1999/000218 ES9900218W WO0005878A1 WO 2000005878 A1 WO2000005878 A1 WO 2000005878A1 ES 9900218 W ES9900218 W ES 9900218W WO 0005878 A1 WO0005878 A1 WO 0005878A1
Authority
WO
WIPO (PCT)
Prior art keywords
monitor
key
perfected
housing
lever
Prior art date
Application number
PCT/ES1999/000218
Other languages
Spanish (es)
French (fr)
Inventor
Javier Gorrochategui Grajirena
Original Assignee
Legrand Española, S.A.
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 Legrand Española, S.A. filed Critical Legrand Española, S.A.
Priority to AU45162/99A priority Critical patent/AU4516299A/en
Publication of WO2000005878A1 publication Critical patent/WO2000005878A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers

Definitions

  • the monitors of the video intercoms incorporate a methacrylate plate arranged as protection of the image tube in the viewing area, said plate being secured according to a conventional solution by gluing with an adhesive tape on both sides, by which the fixed- tion of the plate on the monitor housing.
  • Said solution forces the said methacrylate plate to be of a considerable size larger than the viewing area, so that the bonding is sufficiently effective, also requiring screenprints in the area corresponding to the bonding, to hide the adhesive.
  • the communication cut-off and activation contact is established by means of an actuation key - which can be individually and independently operated, in which case the operation is complicated, since said key must be manipulated Once the headset is held.
  • This monitor object of the invention has the - particularity that the protective methacrylate plate - of the image tube in the viewing area, is clamped onto the monitor housing by means of a frame that is superimposed, setting the fixation of di. cho frame by heat welding of some pivots of the same fit into corresponding holes in the housing.
  • Figure 1 represents an exploded perspective view of the front of a monitor according to the invention, - with the corresponding methacrylate plate and the clamping frame facing each other in the mounting position with respect to The monitor housing.
  • Figure 8 is a sectional view like the previous one, with the key operating lever pressed by the handset, that is according to the hanging position.
  • said methacrylate plate (7) is fastened by means of a frame (8) which is incorporated superimposed, by means of which it is established, thanks to the assembly arrangement itself, a pressing of the methacrylate plate ( 7) against the front housing (6) of the monitor, thus determining the attachment of said methacrylate plate (7), without the need for adhesives.

Abstract

Improved monitor for video phones or video gate keepers comprised of a body intended to house the mechanisms and which is closed frontally with a structure (6), comprising internally an image tube in front of which a vision zone (5) is determined; in correspondence with said vision zone a methacrylate plate (7) is arranged and fixed through a frame (8) which itself is fixed to the structure (6) by insertion and thermowelding of nestable pivots into corresponding housing holes; a mechanism which can be actuated through an actuation lever from the outside is provided for the activation and desactivation of the monitor.

Description

"MONITOR PERFECCIONADO PARA VIDEOPORTERO" "PERFECTED MONITOR FOR VIDEOPORTER"
Los monitores de los videoporteros incorporan una placa de metacrilato dispuesta como protección del tubo de imagen en la zona de visión, sujetándose dicha placa según una solución convencional por pegado con una cinta adhesiva por las dos caras, mediante la cual se establece la fija- - ción de la placa sobre la carcasa del monitor.The monitors of the video intercoms incorporate a methacrylate plate arranged as protection of the image tube in the viewing area, said plate being secured according to a conventional solution by gluing with an adhesive tape on both sides, by which the fixed- tion of the plate on the monitor housing.
Dicha solución obliga a que la mencionada placa de metacrilato sea de un considerable tamaño mayor que la zona de visión, para que el pegado de sujeción resulte suficientemente efectivo, requiriendo además de serigrafías en la - zona que corresponde al pegado, para ocultar el adhesivo.Said solution forces the said methacrylate plate to be of a considerable size larger than the viewing area, so that the bonding is sufficiently effective, also requiring screenprints in the area corresponding to the bonding, to hide the adhesive.
Por otra parte, el contacto de corte y activación de las comunicaciones se establece por medio de una tecla - de accionamiento, la cual puede ser de actuación individual e independiente, haciendo en tal caso complicado el manejo, ya que dicha tecla debe manipularse a la vez que se sujeta el auricular.On the other hand, the communication cut-off and activation contact is established by means of an actuation key - which can be individually and independently operated, in which case the operation is complicated, since said key must be manipulated Once the headset is held.
La solución más convencional por ello, es que la tecla de accionamiento sea actuable por la propia acción de colgar y descolgar el auricular, lo cual sin embargo plantea en muchos casos problemas de realización, por las dificultades de situación de la tecla en un posicionamiento ade cuado para que su actuación resulte efectiva. De acuerdo con la presente invención se propone un monitor desarrollado conforme unas características construc tivas y funcionales especialmente ventajosas, dando lugar a una realización que elimina de una manera efectiva y prácti_ ca los inconvenientes mencionados. Este monitor objeto de la invención presenta la -- particularidad de que la placa de metacrilato protectora -- del tubo de imagen en la zona de visión, se sujeta por apr.i sionado sobre la carcasa del monitor mediante un marco que se incorpora sobrepuesto, estableciéndose la fijación de di. cho marco mediante termosoldadura de unos pivotes del mismo encajables en correspondientes orificios de la carcasa.The most conventional solution for this reason, is that the actuation key is actionable by the action of hanging and unhooking the handset, which in many cases raises realization problems, due to the difficulties of positioning the key in a proper positioning. everything so that your performance is effective. In accordance with the present invention, a monitor developed according to a particularly advantageous constructive and functional characteristics is proposed, giving rise to an embodiment that effectively and practically eliminates the aforementioned drawbacks. This monitor object of the invention has the - particularity that the protective methacrylate plate - of the image tube in the viewing area, is clamped onto the monitor housing by means of a frame that is superimposed, setting the fixation of di. cho frame by heat welding of some pivots of the same fit into corresponding holes in the housing.
Se obtiene así una disposición de muy fácil montaje, mediante la cual se consigue un aseguramiento perfecto de la placa de metacrilato, sin necesidad de adhesivos ni - de serigrafías de oculta iento, permitiendo que la placa -- pueda ser de un tamaño bastante aproximado al de la zona -- efectiva de visión, ya que no es necesaria una sobredimen— sión para posibilitar el aseguramiento por pegado.A very easy assembly arrangement is thus obtained, by means of which a perfect securing of the methacrylate plate is achieved, without the need for adhesives or concealed screen printing, allowing the plate - to be of a size quite approximate to of the area - effective vision, since an over-dimension is not necessary to enable bonding insurance.
Otra particularidad de dicho monitor preconizado , - es que en relación con la tecla accionadora del mecanismo - de activación y desactivación del monitor se incorpora una palanca actuable por el auricular, la cual determina un pun to de accionamiento desplazado con respecto al punto de actuación sobre la tecla accionadora, permitiendo así una dis posición del mencionado punto de actuación en una posición adecuada, con independencia de que la situación de la tecla se halle condicionada por el espacio disponible dentro del monitor.Another peculiarity of said recommended monitor, - is that in relation to the actuator key of the mechanism - activation and deactivation of the monitor incorporates a lever that can be activated by the handset, which determines a displaced operating point with respect to the actuation point on the actuator key, thus allowing a provision of said actuation point in a suitable position, regardless of whether the situation of the key is conditioned by the space available within the monitor.
La mencionada palanca de accionamiento, determina además en relación con la tecla una superficie curva de - - fricción, lo cual permite conseguir un amplio recorrido de accionamiento de la tecla, para garantizar la efectividad - de la acción de la misma en relación con el mecanismo de ac tivación y desactivación, sin que la palanca tenga que so— bresalir de un modo considerable hacia afuera cuando queda libre de presión por el auricular.The aforementioned actuation lever also determines in relation to the key a curved surface of - - friction, which allows to achieve a wide actuation path of the key, to guarantee the effectiveness - of the action thereof in relation to the mechanism of activation and deactivation, without the lever having to protrude considerably outward when it is free of pressure from the handset.
Todo ello hace que este monitor objeto de la inven ción resulte de unas características ciertamente muy ventajosas, adquiriendo su realización vida propia de por sí y - carácter preferente respecto de los monitores convencionales de la misma aplicación.All this means that this monitor object of the invention results in certain characteristics that are certainly very advantageous, acquiring its own life of its own and - preferred character with respect to conventional monitors of the same application.
La figura 1 representa una perspectiva en despiece explosionado del frente de un monitor según la invención, - con la placa de metacrilato y el marco de sujeción corres— pondiente enfrentados en la posición de montaje respecto a la carcasa del monitor.Figure 1 represents an exploded perspective view of the front of a monitor according to the invention, - with the corresponding methacrylate plate and the clamping frame facing each other in the mounting position with respect to The monitor housing.
La figura 2 es una vista frontal de la carcasa del monitor sin la placa de metacrilato ni el marco de sujeción de la misma. La figura 3 es una vista lateral seccionada del -- marco de sujeción de la placa de metacrilato en el monitor.Figure 2 is a front view of the monitor housing without the methacrylate plate or its clamping frame. Figure 3 is a sectional side view of the frame of attachment of the methacrylate plate in the monitor.
La figura 4 es una respectiva vista frontal de dicho marco de sujeción de la placa de metacrilato.Figure 4 is a respective front view of said fastening frame of the methacrylate plate.
La figura 5 es una vista lateral seccionada del — cuerpo del monitor según se indica en la figura 6, sin la - palanca de accionamiento de la tecla accionadora del meca— nismo de activación y desactivación.Figure 5 is a sectional side view of the monitor body as indicated in Figure 6, without the actuation lever of the actuator key of the activation and deactivation mechanism.
La figura 6 es una vista frontal del cuerpo del mo nitor sin la carcasa de tapa y sin la palanca de acciona- - miento de la tecla.Figure 6 is a front view of the monitor body without the cover housing and without the key operating lever.
La figura 7 es una vista lateral seccionada del — cuerpo del monitor con la palanca accionadora de la tecla - en posición libre, es decir según la posición de descolgado.Figure 7 is a sectional side view of the - body of the monitor with the actuator lever of the key - in free position, that is according to the off-hook position.
La figura 8 es una vista en sección como la ante— rior, con la palanca accionadora de la tecla presionada por el auricular, es decir según la posición de colgado.Figure 8 is a sectional view like the previous one, with the key operating lever pressed by the handset, that is according to the hanging position.
La figura 9 es una representación ampliada del con junto de la palanca de actuación y la tecla accionadora del mecanismo de activación y desactivación, indicándose con — respectivas flechas el movimiento combinado de ambas piezas.Figure 9 is an enlarged representation of the actuator lever and the actuator key of the activation and deactivation mechanism, with respective arrows indicating the combined movement of both parts.
El objeto de la invención se refiere a un monitor destinado para videoporteros , comprendiendo un cuerpo (1) - que incluye en su interior un tubo de imagen (2) y una placa impresa (3) , cuyo mecanismo funcional es activable y de- sactivable mediante una tecla accionadora (4) , tal como se aprecia en la representación de las figuras 5 y 6.The object of the invention relates to a monitor intended for video intercoms, comprising a body (1) - which includes inside an image tube (2) and a printed plate (3), whose functional mechanism is activatable and deactivatable by means of an actuator key (4), as can be seen in the representation of figures 5 and 6.
El tubo de im gen (2) se sitúa en una zona que se corresponde con la zona de visión (5) determinada en el -- frente del monitor por la correspondiente carcasa de cierre (6) , sobre cuya zona de visión (5) se incorpora una — placa de metacrilato (7) , la cual se constituye como panta lia de visualización, protegiendo al tubo de imagen (2) .The image tube (2) is located in an area that corresponds to the viewing area (5) determined on the front of the monitor by the corresponding closing housing (6), on whose viewing area (5) a - is incorporated methacrylate plate (7), which is constituted as a display screen, protecting the image tube (2).
De acuerdo con la invención, dicha placa de metacrilato (7) se sujeta mediante un marco (8) que se incorpo ra sobrepuesto, por medio del cual se establece, merced a la propia disposición del montaje, un apresado de la placa de metacrilato (7) contra la carcasa frontal (6) del monitor, determinando así la sujeción de la mencionada placa - de metacrilato (7), sin necesidad de emplear adhesivos. Esta forma de sujeción permite el atrapado de la placa de metacrilato (7) por una pequeña zona del borde pa ra el aseguramiento de la misma, de manera que dicha placa (7) sólo necesita ser ligeramente mayor que la zona de visión (5) determinable con ella, lo cual supone una ventaja en cuanto a dimensiones con respecto a la sujeción convencional por pegado, con la que la placa (7) necesariamente debe ser sobredimensionada de un modo amplio respecto de - la zona de visión (5) , para que la sujeción por pegado resulte efectiva. La sujeción del marco (8) se establece por su par te mediante encaje de unos pivotes (9) definidos en la par te inferior del mismo, tal como se aprecia en la figura 3, respecto de unos correspondientes orificios (10) definidos en la correspondiente zona de acoplamientos sobre la carca sa frontal (6) del monitor, según puede observarse en la - figura 2; con aseguramiento de la mencionada sujeción por fijación mediante termosoldadura de los pivotes (9) en el interior de los orificios (10). Obviamente el mismo resultado de sujeción se obtendría, sin que ello altere el obje to , con una disposición inversa, es decir con los pivotes (9) sobresaliendo de la carcasa (6) y los orificios (10) - en el marco (8) .According to the invention, said methacrylate plate (7) is fastened by means of a frame (8) which is incorporated superimposed, by means of which it is established, thanks to the assembly arrangement itself, a pressing of the methacrylate plate ( 7) against the front housing (6) of the monitor, thus determining the attachment of said methacrylate plate (7), without the need for adhesives. This form of fastening allows the entrapment of the methacrylate plate (7) by a small area of the edge to secure it, so that said plate (7) only needs to be slightly larger than the viewing area (5) determinable with it, which is an advantage in terms of dimensions with respect to conventional bonding, with which the plate (7) must necessarily be oversized in a broad way with respect to - the viewing area (5), for that the bonding is effective. The fastening of the frame (8) is established by its part by means of a set of pivots (9) defined in the lower part thereof, as shown in Figure 3, with respect to corresponding holes (10) defined in the corresponding couplings area on the front sa carca (6) of the monitor, as can be seen in - figure 2; with securing of said fastening by fixing by heat welding of the pivots (9) inside the holes (10). Obviously the same clamping result would be obtained, without altering the object, with an inverse arrangement, that is, with the pivots (9) protruding from the housing (6) and the holes (10) - in the frame (8) .
La disposición de apresado de la placa (7) se obtiene igualmente, en las mismas condiciones, mediante la - sujeción del marco (8) por patillas flexibles dentadas, en cajables en alojamientos de enganche, sin que sean necesarias en tal caso soldaduras para la retención.The clamping arrangement of the plate (7) is also obtained, under the same conditions, by means of - clamping the frame (8) by serrated flexible pins, in lockable in hitch housings, without being necessary in this case welds for retention.
La tecla (4) accionadora de la activación y desac tivación del mecanismo funcional del monitor, queda dis- - puesta en relación con la zona (11) destinada para la coló cación del auricular (12) en el colgado, incorporándose re lacionada con esa tecla (4) una palanca (13) de actuación. Dicha palanca (13) se halla prevista con una forma de "L" , estableciéndose según una disposición de monta- je basculable respecto de un punto de articulación (14) — por la zona del vértice, tal como puede apreciarse en las figuras 7, 8 y 9.The key (4) activating and deactivating the functional mechanism of the monitor is arranged in relation to the area (11) destined for the placement of the handset (12) on the hanger, incorporating it related to that key (4) a actuating lever (13). Said lever (13) is provided with an "L" shape, being established according to a tiltable mounting arrangement with respect to an articulation point (14) - by the vertex area, as can be seen in figures 7, 8 and 9.
En el extremo de una de las ramas esa palanca (13) determina un bloque (15) que se sitúa asomando a través de una abertura (16) definida en la carcasa frontal (6) del - monitor, mientras que en el extremo de la otra rama define una superficie curva (17) en situación inclinada, con la - cual contacta de manera deslizante sobre la tecla (4) ac— cionadora del mecanismo funcional. En tales condiciones, cuando la palanca (13) queda libre, tiende por sí misma a posicionarse con el bloque (15) asomando hacia afuera por la abertura (16) , en cuyo - caso la superficie curva (17) del extremo de la otra rama se sitúa desplazada hacia adelante, permitiendo que la te- cía (4) bascule hacia arriba a la posición que corresponde a la activación del mecanismo funcional o posición de descolgado, tal como representa la figura 7.At the end of one of the branches that lever (13) determines a block (15) that is located peeking through an opening (16) defined in the front housing (6) of the monitor, while at the end of the another branch defines a curved surface (17) in an inclined situation, with which it slides on the actuator key (4) of the functional mechanism. Under such conditions, when the lever (13) is free, it tends to position itself with the block (15) sticking out through the opening (16), in which case the curved surface (17) of the end of the other branch is displaced forward, allowing the theory (4) to swing upward to the position corresponding to the activation of the functional mechanism or off-hook position, as shown in Figure 7.
Cuando el auricular (12) se sitúa sobre la zona - (11) en la posición de colgado, su propia incorporación de termina un empuje del bloque (15) de la palanca (13) hacia adentro, con lo cual dicha palanca (13), bascula, de manera que la superficie curva (17) efectúa un desplazamiento hacia atrás, obligando a la tecla (4) hacia abajo, la cual es situada así en la posición correspondiente a la desactjl vación del mecanismo funcional o posición de colgado, tal como representa la figura 8.When the handset (12) is placed on the zone - (11) in the hanging position, its own incorporation ends a push of the block (15) of the lever (13) inwards, whereby said lever (13) , tilts, so that the curved surface (17) makes a backward movement, forcing the key (4) down, which is thus placed in the position corresponding to the deactivation of the functional mechanism or hanging position, such as depicted in figure 8.
El punto de actuación constituido por el bloque — asomante (15) de la palanca (13), puede de este manera quedar situado según convenga para que la acción empujadora — del auricular (12) al ser colgado resulte efectiva, con independencia de que la tecla (4) haya de quedar situada en - una determinada posición del interior por requerimiento del espacio disponible y la relación que ha de guardar respecto del mecanismo funcional incorporado en la placa impresa (3) . La relación entre la palanca de actuación (13) y - la tecla accionadora (4), mediante la superficie curva (17), permite que con un- pequeño basculamiento de la palanca (13) se obtenga una acción sobre la tecla (4) lo suficientemente amplia para que la actuación de ésta con respecto al meca— nismo funcional sea efectiva con seguridad y sin fallos . The actuation point constituted by the block - hover (15) of the lever (13), can thus be located as appropriate so that the pushing action - of the handset (12) when hung up is effective, regardless of whether the key (4) must be located in - a certain position of the interior due to the requirement of the available space and the relationship to be maintained with respect to the functional mechanism incorporated in the printed plate (3). The relationship between the actuation lever (13) and - the actuator key (4), by means of the curved surface (17), allows an action on the key (4) to be obtained with a small tilt of the lever (13). wide enough so that its performance with respect to the functional mechanism is effective safely and without failures.

Claims

R E I V I N D I C A C I O N E S
1.- Monitor perfeccionado para videoporteros , del tipo formado por un cuerpo (1) que se cierra frontalmente - mediante una carcasa (6), incluyendo un tubo de imagen (2) en correspondencia de una zona de visión (5) y un mecanismo funcional que es actuable en activación y desactivación mediante una tecla (4), caracterizado porque en relación con la zona de visión (5) se incorpora una placa de metacrilato (7) , la cual se sujeta en el montaje por apresado contra la carcasa (6) mediante un marco (8) que se incorpora sobre- - puesto y que se establece en sujeción fija con respecto a - la carcasa (6) .1.- Monitor perfected for video intercoms, of the type formed by a body (1) that closes frontally - by means of a housing (6), including an image tube (2) in correspondence of a viewing area (5) and a mechanism Functional that is activated in activation and deactivation by means of a key (4), characterized in that in relation to the viewing area (5) a methacrylate plate (7) is incorporated, which is fastened in the assembly by pressing against the housing ( 6) by means of a frame (8) that is incorporated superimposed and that is fixedly fixed with respect to - the housing (6).
2.- Monitor perfeccionado para videoporteros, en - todo de acuerdo con la primera reivindicación, caracteriza- do porque la fijación del marco (8) con respecto a la carca sa (6) se establece por encaje de pivotes (9) en correspondientes orificios (10) y la fijación mediante termosoldadu- ra de dichos pivotes (9) dentro de los respectivos orifi- - cios (10) . 2.- Monitor perfected for video intercoms, in particular according to the first claim, characterized in that the fixing of the frame (8) with respect to the housing sa (6) is established by pivot engagement (9) in corresponding holes (10) and the heat-fixing of said pivots (9) within the respective holes (10).
3.- Monitor perfeccionado para videoporteros, en - todo de acuerdo con la primera reivindicación, caracterizado porque en relación con la tecla (4) accionadora del meca nismo funcional se incorpora una palanca (13) de actuación, la cual se halla determinada con una forma de "L", estable- ciéndose en una disposición de montaje basculable con res— pecto a un punto de articulación (14) por la zona del verti ce.3.- Monitor perfected for video intercoms, especially according to the first claim, characterized in that in relation to the actuator key (4) of the functional mechanism, an actuation lever (13) is incorporated, which is determined with a "L" shape, settling in a tiltable mounting arrangement with respect to an articulation point (14) through the verti- zation zone.
4.- Monitor perfeccionado para videoporteros, en - todo de acuerdo con la tercera reivindicación, caracterizado porque la palanca (13) en forma de "L" determina en el - extremo de una de las ramas un bloque (15) susceptible de - asomar hacia el exterior a través de una abertura (16) en - la zona (11) de incorporación de auricular (12), para la ac tuación por el propio auricular (12) al ser colgado. 5^_ Monitor perfeccionado para videoporteros, en - todo de acuerdo con la tercera reivindicación, caracterizado porque la palanca (13) en forma de "L" determina en el - extremo de una de las ramas una superficie curva (17) en si. tuación inclinada, mediante la cual contacta de manera des- lizante con la tecla (4) para el accionamiento de ésta. 4.- Monitor perfected for video intercoms, especially according to the third claim, characterized in that the lever (13) in the form of "L" determines at the end of one of the branches a block (15) capable of showing towards the outside through an opening (16) in - the zone (11) of incorporation of earpiece (12), for the action by the own earpiece (12) when being hung up. 5 ^ _ Monitor perfected for video intercoms, in - all according to the third claim, characterized in that the "L" shaped lever (13) determines at the end of one of the branches a curved surface (17) itself. Inclined position, by means of which it slides in contact with the key (4) for its activation.
PCT/ES1999/000218 1998-07-21 1999-07-08 Improved monitor for video gate keeper WO2000005878A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU45162/99A AU4516299A (en) 1998-07-21 1999-07-08 Improved monitor for video gate keeper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9801951U ES1040952Y (en) 1998-07-21 1998-07-21 PERFECTED MONITOR FOR VIDEO DOOR.
ESU9801951 1998-07-21

Publications (1)

Publication Number Publication Date
WO2000005878A1 true WO2000005878A1 (en) 2000-02-03

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ID=8305184

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Application Number Title Priority Date Filing Date
PCT/ES1999/000218 WO2000005878A1 (en) 1998-07-21 1999-07-08 Improved monitor for video gate keeper

Country Status (3)

Country Link
AU (1) AU4516299A (en)
ES (1) ES1040952Y (en)
WO (1) WO2000005878A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232196A (en) * 1978-12-27 1980-11-04 Frederico Filippi Video telephone apparatus
US4524384A (en) * 1983-04-21 1985-06-18 Gbc Closed Circuit Tv Corp. Video and audio security system
WO1993011542A1 (en) * 1990-05-23 1993-06-10 Inventa Shielding device
EP0844789A2 (en) * 1996-11-21 1998-05-27 Samsung Electronics Co., Ltd. Display apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232196A (en) * 1978-12-27 1980-11-04 Frederico Filippi Video telephone apparatus
US4524384A (en) * 1983-04-21 1985-06-18 Gbc Closed Circuit Tv Corp. Video and audio security system
WO1993011542A1 (en) * 1990-05-23 1993-06-10 Inventa Shielding device
EP0844789A2 (en) * 1996-11-21 1998-05-27 Samsung Electronics Co., Ltd. Display apparatus

Also Published As

Publication number Publication date
ES1040952U (en) 1999-06-01
AU4516299A (en) 2000-02-14
ES1040952Y (en) 1999-10-16

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