DE102009007571A1 - Whiteboard-presentation platform for visualization of test and object in e.g. class room, has socket body made from wood, movable overhead-carriage, and high-quality coated, white furniture plate provided as whiteboard-writing surface - Google Patents

Abstract

The presentation platform has a socket body comprising height of 8 cm and made from laminated wood, and a movable overhead-carriage. A high-quality coated, white furniture plate is provided as a whiteboard-writing surface, and a tripod is made from anodized aluminum tube or stainless steel. The tripod is connected with a housing cover by a base clamping piece that is made from plastic. A radio transmitter is integrated into the platform for transmission of camera signals to a beamer or TV-device, where the transmitter is operated with an independent power supply.

Description

It is known to many educational institutions and businesses in permanently installed projectors in their classrooms and classrooms to have. Also, most camcorders are available. Chalkboard, Whiteboards, Flipcharts, episcopes or overhead projectors will be in the same Space used in parallel to the visual illustration.

Of the The invention defined in claim 1 is based on the problem that it is not sensible solution There are, which work together the existing equipment meaningfully leaves.

The options The existing camcorders are rarely used in conjunction with the installed projectors used, because these usually only have a fixed VGA cable connection to have a single computer. Even if a video cable is also installed, the connection is spatially often unfavorable to the location of the speaker.

Webcam solutions require driver installations and a computer that needs to be started first and usually one Network login is required, which is why many a speaker teacher shies away from ad-hoc engagement.

The At the customer's existing camcorder can in seconds on the Quick adapter plate on the presentation platform be attached.

The wireless transmission allows the video signals the use of the presentation platform without expensive and in practice uncomfortable and less aesthetic cable solutions (surface-mounted channels, floor-trip thresholds). For the solution to be patented is only a power outlet required. Even this is omitted the battery variant.

Next The standard platform will be a variant for integration in commercial overhead roll projection cars offered.

• • Startbar in Sekundenschnelle-Einschalten und fertig. Limitierend ist lediglich die Beamer-Startzeit.
• • Mit der Präsentationsplattform kann auf alle anderen didaktischen Visualisierungshilfen (Kreidetafel, Whiteboards, Flipcharts, Overhead-Projektor, Episkop, ...) verzichtet werden, was enorme Einsparpotentiale bietet. Sogar auf ein Waschbecken, das in Klassenzimmern meist alleine den Zweck des Schwammtränkens für das Tafelwischens erfüllt, kann bei Neubauten u. U. verzichtet werden.
• • Der Vortragende hat über das Klappdisplay des Camcorders eine Monitoring-Funktion, d. h. er braucht nicht wie z. B. bei einem Overhead-Projektor seinen Blick vom Publikum Richtung Leinwand ändern.
• • Große Funktionalität eines normalen Camcorders wie Autofokus, Zoomfunktion, Aufzeichnung von Video und Foto, dadurch Dokumentation des ”Tafelbildes” mit der Photo-Funktion.
• • Schreiben in der gewohnten Schriftgröße
• • Beschriftung der Schreibfläche mit trocken abwischbaren Board-Markern. Mit einem „Wisch” ist all das gelöscht wo sonst (Kreidetafel und White-Boards) mehrfach hin und her gewischt werden muss.
• • Projektion von Arbeitsblättern und Buchseiten (Kostenersparnis durch das überflüssig werden von Overhead-Projektoren und -Folien). Auf Grund der weißen Oberfläche können auch „alte” Folien weiterverwendet werden.
• • Die Größe der Schreibfläche ermöglicht es, selbst den Inhalt einer 2 m × 1 m großen Kreidetafel vergleichsweise über den Beamer auf die Leinwand zu projizieren. Die Schreibfläche ist bewusst 1 m Querformat gewählt, sodass sie dem Kamera- und Beamerformat 16:9 (14:9) entspricht. Die Zoom-Funktion des Camcorders eröffnet hier zusätzlich ungeahnte Möglichkeiten (Details von Anschauungsmitteln).
• • Durch die Schnelladapterplatte kann der Camcorder mit einem Handgriff vom Stativ gelöst werden (anderweitige Verwendung, Diebstahlschutz, ...).
• • Wiedergabe von Präsentationen (z. B. Unterrichtsvorbereitung in Powerpoint oder Impress als JPG-Format) ist ohne Computer möglich. Ein Präsenter, wie er als Zusatz für PC's gekauft werden kann, erübrigt sich. Diese Funktion übernimmt die Fernbedienung des Camcorders.
• • Betrachten von Anschauungsmaterial einschließlich der Vergrößerung bis in den Makrozoom-Bereich (Detailgenauigkeit).
• • Durch das Schwenken des Camcorders mit dem 3D-Stativkopf in die Horizontale ergeben sich weitere Anwendungsmöglichkeiten. So können zum Beispiel naturwissenschaftliche Versuche vergrößert projiziert oder ein Verkaufsgespräch im Unterricht aufgezeichnet werden.

With the invention according to claim 1 in particular the following advantages are given:

• • Can be started in seconds and switched on. The only limitation is the beamer start time.
• • With the presentation platform, all other didactic visualization aids (chalk board, whiteboards, flipcharts, overhead projector, episcope, ...) can be dispensed with, which offers enormous savings potential. Even on a sink, which usually alone in classrooms serves the purpose of sponge drinking for the Tafelwischens, can u. U. be waived.
• • The presenter has a monitoring function via the camcorder's flip-up display, ie it does not need to be connected to the camcorder. For example, with an overhead projector, you can change your view from the audience to the screen.
• • Great functionality of a normal camcorder such as autofocus, zoom function, recording of video and photo, thereby documenting the "blackboard" with the photo function.
• • Writing in the usual font size
• • Labeling of the writing surface with dry-erase board markers. With a "Wisch" is all deleted where else (chalk board and white boards) must be wiped several times back and forth.
• • Projection of worksheets and book pages (cost savings by eliminating overhead projectors and transparencies). Due to the white surface also "old" films can be used.
• • The size of the writing surface makes it possible to even project the contents of a 2 m × 1 m chalk board comparatively over the projector onto the screen. The writing surface is deliberately 1 m landscape selected so that it corresponds to the camera and projector format 16: 9 (14: 9). The zoom function of the camcorder opens up unexpected possibilities (details of visual aids).
• • With the quick adapter plate, the camcorder can be detached from the tripod in one easy operation (other uses, theft protection, ...).
• • Playback of presentations (eg lesson preparation in PowerPoint or Impress as JPG format) is possible without a computer. A presenter, as it can be bought as an accessory for PC's, is unnecessary. This function takes over the remote control of the camcorder.
• • Viewing slides including magnification to the macro zoom area (detail).
• • Swinging the camcorder with the 3D tripod head into the horizontal position opens up further application possibilities. For example, scientific experiments can be projected larger or a sales pitch can be recorded in class.

An advantageous embodiment of the invention is specified in claim 2. The development according to claim 2 makes it possible to position the presentation platform anywhere in the classroom or meeting room. It is necessary in network operation only a socket. In the embodiment of the invention according to claim 3 can even be dispensed with the mains socket on battery power. With a 2.4 GHz transmitter, a transmission of the camera signals to the projector or the TV set is easily possible in the room. The sig nal can even be distributed with additional receivers to multiple output devices in the same or adjacent rooms.

It is no instruction for necessary for the user who only has two switches (camcorder and presentation platform) set to "ON" got to. The projector recognizes the input signal automatically and switches on the video input. The other camcorder features like zoom or rendering images are usually private to the user Use common.

Execution:

leaf 1: front, side and top views

leaf 2: Isometric view, details A and B

leaf 3: bottom view

leaf 4: wiring diagram

leaf 5: Fixing bar for Overhead trolley

leaf 6: Tripod head and camcorder adaptation

Platform / Tripod Construction (Sheet 1 and 2)

Of the socket body (Height approx. 8 cm) is made of coated wood so as not to allow the radio signal strong weakening. As a writing surface serves a high quality coated, easily dry wipeable white furniture board, Size about 45 × 40 cm. The platform mounted tripod made of anodized aluminum tube or stainless steel is with a plastic foot clamp with the housing cover connected (sheet 2, detail A). Due to the simple clamping with two Allen screws left the stand tube rotate around the vertical axis. That's expanding the applications and the dismantling reduces the pack size for shipping. Because of the Zoom function of the camcorder, a height adjustment of the lens distance from the whiteboard surface is not required, the tripod tube can be made in one piece become. This allows a simple and clean cable management inside the pipe. The tripod height is chosen (about 50 cm) that the camcorder in the wide-angle range at least To DIN A4 size can. At the vertical tube area is a cup for pens assembled.

At the "camcorder end" of the tripod tube is a 3-way tripod head (3/8 '' female thread) with quick release plate mounted mounted on a clampable tab end piece. As with the Fußklemmstück this is mass-produced goods from mechanical engineering. At the tube bottom is a hole for the exit of the "supply cable" attached. The head is mounted so that in the home position the camera with the lens pointing down towards the writing surface (sheet 6). The camera plate is minimized by the dimensions so that sometimes at Camera memory card slot without disassembly of the quick release plate open from the camera leaves.

Adaptation to mobile cars for overhead projectors

To a correspondingly wide writing board is mounted so that the rests left and right on the cart frame. Two pre-drilled, The customer needs to be fastened with Spax screws on the underside of the lid prevent lateral slipping on the carriage frame.

radio system

use in the device find commercial video transmission systems.

Of the Transmitter (2.4 GHz, 4 channels) is in the presentation socket (Sheet 3) invisibly housed. Its 9 V power supply is in the internal power strip plugged. By opening the floor (floor in the leaves not shown!) a possibly necessary change of the channel at the transmitter is possible. The Chinch cables are already connected and are through the tripod tube led to the tripod head where then only the camcorder with the RCA beech are connected got to.

Of the Receiver is placed on the ceiling mount of the beamer (fixation by means of cable ties or Velcro strips). The 9V power supply uses the existing on the projector power supply via double socket.

Network version

The Transmitter power supply (9 V, 300 mA) is placed in the socket 3-way power strip plugged, its cable feed with strain relief through the housing guided becomes.

Battery version

The battery solution done with the circuit (sheet 4), which housed in the socket becomes.

In battery mode (switch position II), the Ni-MH battery pack with 2300 mAh guarantees a transmitter runtime (9 V, 300 mA) of at least 8 hours. The battery is charged in 230 V operation (switch position I). The charger uses a 230 V plug-in charger with integrated minus delta-U control (-ΔU), which monitors the voltage during the entire charging cycle. When the battery pack is fully charged, the charger will turn off automatically on trick shop around. This will always maintain the optimal capacity of the battery.

in the 230 V operation, the transmitter is powered by its own wall power supply (9 V, 300 mA).

at typical consumption of about 3 watts (recording operation) and Batteries 7.4 V / 3000 mAh result in more than 7 hours also far enough Camcorder maturities. Dispensing with the LCD monitoring extends the battery life by another 30%.

Camcorder light (sheet 2, detail B)

For special becomes poor lighting conditions as a supplement a diode lamp offered on the horizontal tripod tube section is attached and the over a rotary switch in the lamp head on and off can. The voltage is parallel to the transmitter with a corresponding one Tapped resistor, the supply is thus optionally on the Battery or the power adapter. The cable runs here in the tripod tube, Outlet over a hole at the bottom of the pipe.

camcorder

• • Autofokus
• • Photo-Shot-Funktion
• • Kamera-Slot (SD oder anderer)
• • Fernbedienung
• • Akkuladung ohne dass der Akku von der Kamera genommen werden muss; dadurch kann das Ladegerät im Sockel untergebracht werden und dort ständig verbleiben (Netz- und Akkuladebetrieb)

To achieve full functionality, the camcorder bundle variant is a commercially available camcorder with the following features installed:

• • Autofocus
• • Photo-shot function
• • Camera slot (SD or other)
• • Remote control
• • Battery charge without having to remove the battery from the camera; This allows the charger to be housed in the socket and remain there permanently (mains and battery charging)

Market advantage:

Of the Use is especially in classrooms, training and lecture rooms at. Due to the simple construction, the device can be almost completely manufactured by auxiliary staff and are mounted, which is why a retail price of about 400 EUR for the network variant including Radio system and camcorder is realistic. This is for public Facilities purchase over the non-approved administrative budget possible what a offers enormous sales potential.

Claims (3)

Presentation platform for the visualization of text and objects with a camera and a projector or monitors, characterized in that the platform with whiteboard writing surface allows quick recording of a commercial camcorder via a universal 3D-tripod head and can also be used with a mobile overhead carriage. presentation platform according to claim 1, characterized in that in the platform additionally a radio transmitter for transmission integrated with beamer or TV is. presentation platform according to claim 2, characterized in that the radio transmitter with an independent Power is operated.