FR2612351A1 - System for simultaneous transmission of radiobroadcast orders and televised images - Google Patents

System for simultaneous transmission of radiobroadcast orders and televised images Download PDF

Info

Publication number
FR2612351A1
FR2612351A1 FR8703261A FR8703261A FR2612351A1 FR 2612351 A1 FR2612351 A1 FR 2612351A1 FR 8703261 A FR8703261 A FR 8703261A FR 8703261 A FR8703261 A FR 8703261A FR 2612351 A1 FR2612351 A1 FR 2612351A1
Authority
FR
France
Prior art keywords
orders
helmet
receiver
transmission
radio
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Withdrawn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
FR8703261A
Other languages
French (fr)
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
Priority to FR8703261A priority Critical patent/FR2612351A1/en
Publication of FR2612351A1 publication Critical patent/FR2612351A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/0406—Accessories for helmets
    • A42B3/042—Optical devices
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/30—Mounting radio sets or communication systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0176—Head mounted characterised by mechanical features
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/08—Constructional details, e.g. cabinet
    • H04B1/086—Portable receivers
    • H04B1/088—Portable receivers with parts of the receiver detachable or collapsible
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
    • G02B2027/0156—Head-up displays characterised by mechanical features with movable elements with optionally usable elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

System for simultaneous transmission of radiobroadcast orders and televised images, especially for military transmission from a command post issuing orders to men who execute them in the field, characterised in that it comprises: - on the one hand, a television transmitter and a multifrequency radio transmitter, which are placed at the point of transmission of the orders and, - on the other hand, a personal receiver for the individual addressed by the orders, comprising a personal helmet 10 in which are housed earphones and are incorporated a radio receiver and a television receiver with their reception antenna 20 and their keypad for control and selection of the various reception frequencies 12; an image-reception screen arranged on the front part of the said helmet and, a concave mirror 16, preferably magnifying, arranged on a visor 18 provided on the said helmet so that the user receives the image from the screen after reflection on the said mirror.

Description

Le présente invention est reiative à un système de transmission simultanée d'ordres radic-diffusés et d'images télévisées, notamment de transmission militaire du commandement d'ou emanent les ordres vers les hommes qui les exécutent sur le terrain. The present invention relates to a system for the simultaneous transmission of radio-broadcast orders and television images, in particular of military transmission of the command from which the orders emanate to the men who execute them on the ground.

Dans les systèmes de transmission radio actuellement utilisés il n'est généralement pas possible au récepteur des ordres, d'identifier de façon sure la voix de la personne émettant ces ordres, ce qui nuit à la sécurite des transmissions en introduisant un doute sur l'origine des ordres reçus. La présente invention se propose en conséquence de résoudre un tel problème en assurant la certitude de l'origine des ordres reçus par une vision directe d'une image videz et gros plan a incrustation, sur le récepteur du visage du donneur d'ordre, de la synchronisation du tex-e avec jes levres, et d'autres représentations utiles à a compréhension des ordres émis, tels que croquis, cartes, prnans d'attaque, et?-
En consequence, la présente invention concerne un dispositif de transmission simultanée d'ordres radio-diffuses et d'images vidéo caractérisé en ce qu'il comprend : d'une part un émetteur de télevision et un émetteur radio à plusieurs frequences, places au point d'emission des ordres et d'autre part un récepteur individuel pour la personne destinatatire des ordres, qui comprend un casque individuel, ans leque est integre un recepteur de télévision et un récepteur radio, avec un clavier de commande et de sélection des différentes fréquences de réception ; un écran a cristaux liquides dispose sur la partie irontale du casque et un miroir concave, grossissant, dispose sur une visière prévue sur le casque, de telle manière ou l'utilisateur reçoive l'image de l'écran apres réflexion sur ledit miroir.In the radio transmission systems currently in use, it is generally not possible for the receiver of orders to identify in a secure manner the voice of the person issuing these orders, which harms the security of transmissions by introducing a doubt about the origin of orders received. The present invention therefore proposes to solve such a problem by ensuring the certainty of the origin of the orders received by a direct vision of an empty image and close-up with inlay, on the receiver of the face of the originator, the synchronization of tex-e with my lips, and other representations useful for understanding the orders issued, such as sketches, maps, attack plans, and? -
Consequently, the present invention relates to a device for the simultaneous transmission of radio-broadcast orders and video images, characterized in that it comprises: on the one hand a television transmitter and a radio transmitter at several frequencies, placed in focus for issuing orders and on the other hand an individual receiver for the person receiving orders, which includes an individual headset, so that a television receiver and a radio receiver are integrated, with a keyboard for controlling and selecting the different frequencies reception ; a liquid crystal screen has on the horizontal part of the helmet and a concave, magnifying mirror has on a visor provided on the helmet, in such a way that the user receives the image of the screen after reflection on said mirror.

Selon une caractéristique de cette invention, ladite visière est retractable et elle est réalisée sous la forme d'un élément coulissant sur le casque. According to a characteristic of this invention, said visor is retractable and it is produced in the form of a sliding element on the helmet.

D'autres caractéristiques et avantages de cette invention ressortiront de la description faite ci-après en référence au dessin annexé dant la figure unique est une vue schématique en élévation latérale d'un mode de réalisation préfèré. Other characteristics and advantages of this invention will emerge from the description given below with reference to the appended drawing in the single figure is a schematic side elevation view of a preferred embodiment.

La partie émission du système de transmission objet de cette invention étant du type classique, elle ne sera pas décrite ici. En effet, on a vu qu'il s'agissait simplement d'un émetteur radio, de préférence a sauts ou évasion de fréquence, pour assurer la sécurité des transmissions, et d'un émetteur de télévision à plusieurs fréquences, emettant a une distance captable prédéterminée en fonction des nécessités du commandement
La partie réception comporte essentiellement un casque 10 porté par le combattant, surmonté d'une antenne teléscopique de reception des signaux audio et vidéo, émis par les émetteurs radio et de télévision.Dans ce casque 10 sont logés les écouteurs droit et gauche et sont intégrés les composants électroniques des récepteurs radio et de télévision avec un clavier de commande extérieur 12, facilement accessible par l'utilisateur et qui comporte les boutons de commande habituels ; marche-arrét ; sélecteur de fréquence ; sélecteur de brouillage (cryptophonique) ; sélecteur de codage-décodage, etc.The transmission part of the transmission system object of this invention being of the conventional type, it will not be described here. Indeed, we have seen that it was simply a radio transmitter, preferably hopping or frequency escape, to ensure the security of transmissions, and a television transmitter at several frequencies, transmitting at a distance captable predetermined according to the needs of the command
The reception part essentially comprises a helmet 10 worn by the combatant, surmounted by a telescopic antenna for receiving audio and video signals, emitted by radio and television transmitters. In this helmet 10 are housed the right and left earphones and are integrated the electronic components of radio and television receivers with an external control keyboard 12, easily accessible by the user and which comprises the usual control buttons; On Off ; frequency selector; jamming selector (cryptophonic); coding-decoding selector, etc.

Dans le casque sont également integres auz emplacements appropriés les écouteurs du récepteur radio. The headphones of the radio receiver are also integrated in the appropriate places.

Le casque est muni, a sa partie frontale, de l'écran 14 du récepteur de télévision Celui-ci est réalise sous a forme d'un écran plat à cristaux liquides, de préférence du type å matrices actives Le casque 10 se prolonge par une visière 16 qui comporte une tartie antérieure sensiblement verticale, sur la surface interieure de laquelle on prévoit un m miroir concave 16, grossissant. The headset is provided, at its front part, with the screen 14 of the television receiver. This is produced in the form of a flat liquid crystal screen, preferably of the active matrix type. The headset 10 is extended by a visor 16 which has a substantially vertical anterior tart, on the interior surface of which a concave mirror 16, magnifying is provided.

Celui-ci peut étre protegé par une garniture anti-choc. On comprend que l'image de l'écran 14 est réflèchie en image virtuelle par le miroir concave 16 et qu'elle est renvovee vers l'oei : ce l'utilisateur. a distance de lecture, très courte, est possible sans accommodation ce l'oeil, grace a l'éloignement de l'image virtuelle rendu possible par la concavité du miroir 16, la fixité de l'image étant assurée par i rigidite de l'ensemble casque/laniere de fixation de ce casque.This can be protected by an anti-shock lining. It will be understood that the image of the screen 14 is reflected as a virtual image by the concave mirror 16 and that it is returned to the eye: the user. reading distance, very short, is possible without accommodation this eye, thanks to the remoteness of the virtual image made possible by the concavity of the mirror 16, the fixity of the image being ensured by the rigidity of the helmet / strap assembly for fixing this helmet.

Selon une varlante de cette invention, la visiere peut étre rétractable et, à cet effet, elle peut étre montée coulissante sur ou dans le casque. According to a variant of this invention, the visor can be retractable and, for this purpose, it can be mounted sliding on or in the helmet.

On comprend que le système objet de cette invention assure une excellente sécurité dans la transmission des ordres, étant donné qu'il permet au receveur d'ordres d'identifier visuellement le donneur d'ordre (par vision directe de l'image vidéo en gros plan à incrustation sur le récepteur), assurant ainsi la certitude de l'origine des ordres reçus. It is understood that the object of this invention system provides excellent security in the transmission of orders, since it allows the receiver of orders to visually identify the originator (by direct vision of the video image roughly inlay map on the receiver), thus ensuring the certainty of the origin of the orders received.

Par ailleurs, dans le cas d'une transmission de
- Cartes géographiques, cartes d'état-major ou autres
- Croquis de manoeuvres ou de mouvements
- images de toutes sortes < nocturnes par infra-rouges ; cibles non visibles pour tirs indirects, et?. Furthermore, in the case of a transmission of
- Geographical maps, staff maps or others
- Sketches of maneuvers or movements
- images of all kinds <nocturnal by infrared; targets not visible for indirect fire, and ?.

- Plans d'attaque, objectifs désignés, etc. - Attack plans, designated objectives, etc.

le combattant, muni du casque de réception ne recevra plus de simples ordres radio-diffusés, mais il détiendra une image synchronisée. the combatant, provided with the reception helmet will no longer receive simple radio broadcast orders, but will hold a synchronized image.

Il demeure bien entenau que cette invention n'est pas limitée à l'exemple de réalisation décrit et représenté mais qu'elle en englobe toutes les variantes.  It remains clear that this invention is not limited to the embodiment described and shown but that it encompasses all variants.

Claims (2)

REVENDLCATIONS 1- Système de transmission simultanée d'ordres radio-diffusés et d'images télévisées, notamment de transmission militaire à partir d'un commandement d'oû émanent les ordres vers les hommes qui les exécutent sur le terrain, caractérisé en ce qu'il comprend  1- System for the simultaneous transmission of radio-broadcast orders and television images, in particular of military transmission from a command from which the orders emanate to the men who execute them on the ground, characterized in that it understands - D'une part, un emetteur de télévision et un émetteur radio à plusieurs fréquences, placés au point d'émission des ordres et, - On the one hand, a television transmitter and a radio transmitter at several frequencies, placed at the point of emission of orders and, - D'autre part, un récepteur individuel pour la personne destinataire des ordres comprenant un casque individuel (10) dans lequel sont logés des écouteurs et sont intégrés un récepteur radio et un recepteur de télévision avec leur antenne de reception (20 et leur clavier ce commande et de sélection des différentes frequences de réception (12) ; un écran de réception d'images disposé sur la partie frontale dudit casque et, un miroir concave (16) de préférence grossissant, disposé sur une visière (18), prevue sur ledit casque de manière que l'utilisateur reçoive l'image de l'ecran après reflexion sur ledit miroir. - On the other hand, an individual receiver for the person receiving orders comprising an individual headset (10) in which headphones are housed and a radio receiver and a television receiver are integrated with their receiving antenna (20 and their keyboard). control and selection of the different reception frequencies (12); an image reception screen arranged on the front part of said helmet and, a concave mirror (16) preferably magnifying, arranged on a visor (18), provided on said headset so that the user receives the image of the screen after reflection on said mirror. 2- Systeme de transmission se or a revendication i, caractérisé en ce que l'écran (12) est du type a cristaux liquides, de préférence à matrices actives. 2- Transmission system or claim i, characterized in that the screen (12) is of the liquid crystal type, preferably with active matrices. o- Systeme de transmission selon 1' une des revendications 1 ou 2, caractérise en ce cue ladite visiere (18) est rétractable et elle est réalisée soc la forme d'un élement coulissant sur ie casque  o- Transmission system according to one of claims 1 or 2, characterized in that said visor (18) is retractable and it is produced soc the form of a sliding element on the helmet
FR8703261A 1987-03-10 1987-03-10 System for simultaneous transmission of radiobroadcast orders and televised images Withdrawn FR2612351A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8703261A FR2612351A1 (en) 1987-03-10 1987-03-10 System for simultaneous transmission of radiobroadcast orders and televised images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8703261A FR2612351A1 (en) 1987-03-10 1987-03-10 System for simultaneous transmission of radiobroadcast orders and televised images

Publications (1)

Publication Number Publication Date
FR2612351A1 true FR2612351A1 (en) 1988-09-16

Family

ID=9348805

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8703261A Withdrawn FR2612351A1 (en) 1987-03-10 1987-03-10 System for simultaneous transmission of radiobroadcast orders and televised images

Country Status (1)

Country Link
FR (1) FR2612351A1 (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0564940A1 (en) * 1992-04-06 1993-10-13 Motorola, Inc. Personal communicator
WO1993018428A3 (en) * 1992-03-13 1994-02-17 Kopin Corp Head-mounted display system
US5331149A (en) * 1990-12-31 1994-07-19 Kopin Corporation Eye tracking system having an array of photodetectors aligned respectively with an array of pixels
EP0648045A2 (en) * 1993-09-21 1995-04-12 Sony Corporation Systems for explaining exhibits
EP0701708A1 (en) * 1994-03-04 1996-03-20 Motorola, Inc. Information display apparatus
USD381346S (en) 1995-09-13 1997-07-22 Kopin Corporation Head-mountable matrix display
US5815126A (en) * 1993-10-22 1998-09-29 Kopin Corporation Monocular portable communication and display system
US6043800A (en) * 1990-12-31 2000-03-28 Kopin Corporation Head mounted liquid crystal display system
US6073034A (en) 1996-10-31 2000-06-06 Kopin Corporation Wireless telephone display system
US6072445A (en) * 1990-12-31 2000-06-06 Kopin Corporation Head mounted color display system
WO2002052330A2 (en) * 2000-12-22 2002-07-04 Board Of Trustees Operating Michigan State University Teleconferencing system and head mounted display involved in the same
US6421031B1 (en) 1993-10-22 2002-07-16 Peter A. Ronzani Camera display system
US6424321B1 (en) 1993-10-22 2002-07-23 Kopin Corporation Head-mounted matrix display
US6448944B2 (en) 1993-10-22 2002-09-10 Kopin Corporation Head-mounted matrix display
US6545654B2 (en) 1996-10-31 2003-04-08 Kopin Corporation Microdisplay for portable communication systems
US6677936B2 (en) 1996-10-31 2004-01-13 Kopin Corporation Color display system for a camera
EP1550895A2 (en) * 2003-12-30 2005-07-06 C.R.F. Società Consortile per Azioni System for the remote assistance of an operator during a work stage
WO2007132201A1 (en) * 2006-05-11 2007-11-22 South Bank University Enterprises Ltd Headwear with visual indication
WO2010051684A1 (en) * 2008-11-07 2010-05-14 Lee Wangfung Hat for watching video images on one´s person
WO2010066481A2 (en) * 2008-12-10 2010-06-17 Siemens Aktiengesellschaft Method for transmitting an image from a first control unit to a second control unit and output unit
EP2768333B1 (en) * 2011-10-18 2017-03-29 Brooklin S.r.L. Multifunction protective helmet
EP3145352A4 (en) * 2014-07-31 2018-01-10 Bell Sports, Inc. Helmet with integrated electronics and helmet visor controls
CN110693126A (en) * 2019-09-11 2020-01-17 浙江华消科技有限公司 Helmet device and using method thereof

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6072445A (en) * 1990-12-31 2000-06-06 Kopin Corporation Head mounted color display system
US5331149A (en) * 1990-12-31 1994-07-19 Kopin Corporation Eye tracking system having an array of photodetectors aligned respectively with an array of pixels
US7075501B1 (en) 1990-12-31 2006-07-11 Kopin Corporation Head mounted display system
US5583335A (en) * 1990-12-31 1996-12-10 Kopin Corporation Method of making an eye tracking system having an active matrix display
US6043800A (en) * 1990-12-31 2000-03-28 Kopin Corporation Head mounted liquid crystal display system
WO1993018428A3 (en) * 1992-03-13 1994-02-17 Kopin Corp Head-mounted display system
US6636185B1 (en) 1992-03-13 2003-10-21 Kopin Corporation Head-mounted display system
US6140980A (en) * 1992-03-13 2000-10-31 Kopin Corporation Head-mounted display system
EP0564940A1 (en) * 1992-04-06 1993-10-13 Motorola, Inc. Personal communicator
EP0648045A2 (en) * 1993-09-21 1995-04-12 Sony Corporation Systems for explaining exhibits
EP0648045A3 (en) * 1993-09-21 1995-07-19 Sony Corp Systems for explaining exhibits.
US5691737A (en) * 1993-09-21 1997-11-25 Sony Corporation System for explaining an exhibit using spectacle-type displays
US7310072B2 (en) 1993-10-22 2007-12-18 Kopin Corporation Portable communication display device
US6683584B2 (en) 1993-10-22 2004-01-27 Kopin Corporation Camera display system
US5815126A (en) * 1993-10-22 1998-09-29 Kopin Corporation Monocular portable communication and display system
US8040292B2 (en) 1993-10-22 2011-10-18 Kopin Corporation Portable communication display device
US6448944B2 (en) 1993-10-22 2002-09-10 Kopin Corporation Head-mounted matrix display
US6421031B1 (en) 1993-10-22 2002-07-16 Peter A. Ronzani Camera display system
US6424321B1 (en) 1993-10-22 2002-07-23 Kopin Corporation Head-mounted matrix display
EP0701708A1 (en) * 1994-03-04 1996-03-20 Motorola, Inc. Information display apparatus
EP0701708A4 (en) * 1994-03-04 1996-09-18 Motorola Inc Information display apparatus
USD381346S (en) 1995-09-13 1997-07-22 Kopin Corporation Head-mountable matrix display
US6486862B1 (en) 1996-10-31 2002-11-26 Kopin Corporation Card reader display system
US6545654B2 (en) 1996-10-31 2003-04-08 Kopin Corporation Microdisplay for portable communication systems
US6677936B2 (en) 1996-10-31 2004-01-13 Kopin Corporation Color display system for a camera
US6232937B1 (en) 1996-10-31 2001-05-15 Kopin Corporation Low power active display system
US6073034A (en) 1996-10-31 2000-06-06 Kopin Corporation Wireless telephone display system
WO2002052330A2 (en) * 2000-12-22 2002-07-04 Board Of Trustees Operating Michigan State University Teleconferencing system and head mounted display involved in the same
WO2002052330A3 (en) * 2000-12-22 2003-02-13 Univ Michigan State Teleconferencing system and head mounted display involved in the same
EP1550895A3 (en) * 2003-12-30 2005-11-23 C.R.F. Società Consortile per Azioni System for the remote assistance of an operator during a work stage
US7333073B2 (en) 2003-12-30 2008-02-19 Crf Societa Consortile Per Azioni System for the remote assistance of an operator during a work stage
EP1550895A2 (en) * 2003-12-30 2005-07-06 C.R.F. Società Consortile per Azioni System for the remote assistance of an operator during a work stage
WO2007132201A1 (en) * 2006-05-11 2007-11-22 South Bank University Enterprises Ltd Headwear with visual indication
WO2010051684A1 (en) * 2008-11-07 2010-05-14 Lee Wangfung Hat for watching video images on one´s person
WO2010066481A2 (en) * 2008-12-10 2010-06-17 Siemens Aktiengesellschaft Method for transmitting an image from a first control unit to a second control unit and output unit
WO2010066481A3 (en) * 2008-12-10 2011-03-03 Siemens Aktiengesellschaft Method for transmitting an image from a first control unit to a second control unit and output unit
EP2768333B1 (en) * 2011-10-18 2017-03-29 Brooklin S.r.L. Multifunction protective helmet
EP3145352A4 (en) * 2014-07-31 2018-01-10 Bell Sports, Inc. Helmet with integrated electronics and helmet visor controls
US9955049B2 (en) 2014-07-31 2018-04-24 Bell Sports, Inc. Helmet with integrated electronics and helmet visor controls
US10806204B2 (en) 2014-07-31 2020-10-20 Bell Sports, Inc. Helmet with integrated electronics and helmet visor controls
CN110693126A (en) * 2019-09-11 2020-01-17 浙江华消科技有限公司 Helmet device and using method thereof

Similar Documents

Publication Publication Date Title
FR2612351A1 (en) System for simultaneous transmission of radiobroadcast orders and televised images
US4970589A (en) Head mounted video display and remote camera system
JP3208800B2 (en) Microphone device and wireless microphone device
US4821307A (en) Image splitter for two-way imaging apparatus
US5005213A (en) Head mounted video display and remote camera system
US4884137A (en) Head mounted video display and remote camera system
US5200827A (en) Head mounted video display and remote camera system
US4786966A (en) Head mounted video display and remote camera system
US5963369A (en) Digital solid-state binoculars
US7173237B2 (en) Ruggedized digital low-light viewing device
US6462775B1 (en) Apparatus within a street lamp for remote surveillance having directional antenna
FR2441191A1 (en) HELMET MOUNTED VIEWING SYSTEM
US5646784A (en) Helmet display system
GB2266427A (en) Video camera with both view finding and projecting function
FR2521328A1 (en) PANORAMIC VIEW SIMULATION DEVICE USING AN OPTICAL APPARATUS
FR2493539A1 (en) PERFECTIONAL NIGHT VISION EQUIPMENT
CN215867321U (en) Far image display device
JP2024505067A (en) Observation optics with shock absorbing material
KR19990087771A (en) Real time multipath video imaging system
US4229761A (en) Illusion transmitter
FR2521279A1 (en) PANORAMIC VIEW SIMULATION DEVICE FOR A SHOOTING TRAINING APPARATUS
JP3178021B2 (en) microphone
JP3178020B2 (en) microphone
JP3178019B2 (en) microphone
FR3124281A1 (en) Optical device for displaying content close to a user&#39;s eye

Legal Events

Date Code Title Description
ST Notification of lapse