DE9406985U1 - Portable computer - Google Patents

Portable computer

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Publication number
DE9406985U1
DE9406985U1 DE9406985U DE9406985U DE9406985U1 DE 9406985 U1 DE9406985 U1 DE 9406985U1 DE 9406985 U DE9406985 U DE 9406985U DE 9406985 U DE9406985 U DE 9406985U DE 9406985 U1 DE9406985 U1 DE 9406985U1
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DE
Germany
Prior art keywords
portable computer
display part
user
observer
display
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.)
Expired - Lifetime
Application number
DE9406985U
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German (de)
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.)
WOITZEL INGBUERO IBW
Original Assignee
WOITZEL INGBUERO IBW
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 WOITZEL INGBUERO IBW filed Critical WOITZEL INGBUERO IBW
Priority to DE9406985U priority Critical patent/DE9406985U1/en
Publication of DE9406985U1 publication Critical patent/DE9406985U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1613Constructional details or arrangements for portable computers
    • G06F1/1633Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1647Details related to the display arrangement, including those related to the mounting of the display in the housing including at least an additional display
    • G06F1/1649Details related to the display arrangement, including those related to the mounting of the display in the housing including at least an additional display the additional display being independently orientable, e.g. for presenting information to a second user
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1613Constructional details or arrangements for portable computers
    • G06F1/1615Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Eye Examination Apparatus (AREA)

Description

Tragbarer ComputerPortable computer

Die vorliegende Erfindung bezieht sich auf einen tragbaren Computer nach dem Oberbegriff des Anspruchs 1 , der für eine Datenerfassung und/oder -weitergäbe an unterschiedlichen Benutzungsorten vorgesehen ist.The present invention relates to a portable computer according to the preamble of claim 1, which is intended for data acquisition and/or transmission at different locations of use.

Bekannte marktgängige tragbare Computer, auch als Laptop oder Notebook bezeichnet, weisen ein mit einer Bedientastatur versehenes Gehäuseteil auf, an dem eine aus einer geschlossenen Transportstellung in eine sichtbare Bedienstellung schwenkbare Displayeinheit angeordnet ist. In der Bedienstellung können unterschiedliche Programmbestandteile, Grafiken und dgl. auf dem Benutzer-Displayteil sichtbar gemacht werden, so daß eine über die Bedientastatur erfolgende Dateneingabe in Blickrichtung des Benutzers kontrolliert werden kann. Für einen interessierten Beobachter, beispielsweise einen vom Benutzer zu beratenden Kunden, ist die Sichtbarkeit des Bildschirmes des Benutzer-Displayteils während der Tastaturbedienung nachteilig eingeschränkt. Well-known portable computers on the market, also referred to as laptops or notebooks, have a housing part equipped with a control keyboard, on which a display unit is arranged that can be swiveled from a closed transport position into a visible operating position. In the operating position, different program components, graphics and the like can be made visible on the user display part, so that data input via the control keyboard can be monitored in the user's line of sight. For an interested observer, for example a customer who is to be advised by the user, the visibility of the screen of the user display part is disadvantageously limited during keyboard operation.

Der Erfindung liegt die Aufgabe zugrunde, einen tragbaren Computer der eingangs genannten Art zu schaffen, der eine Benutzung mit verbessertem Beobachtungskomfort ermöglicht.The invention is based on the object of creating a portable computer of the type mentioned above, which enables use with improved observation comfort.

Die Erfindung löst diese Aufgabe durch einen tragbaren Computer mit den Merkmalen des Anspruchs 1. Hinsichtlich weiterer wesentlicher Ausgestaltungen wird auf die Ansprüche 2 bis 5 verwiesen.The invention solves this problem by a portable computer having the features of claim 1. With regard to further essential embodiments, reference is made to claims 2 to 5.

Die Erfindung schafft einen tragbaren Computer, dessen zwei Displayteile aufweisender Geräteaufbau in der Bedienstellung so positionierbar ist, daß bei gleichzeitiger Anwesenheit mehrerer Beobachterpersonen für diese der Beobachtungskomfort verbessert ist. Damit können beispielsweise die bei einer Kalkulation oder dgl. vom Benutzer in den Computer eingegebenen Daten sofort von dem am Gespräch beteiligten Kunden als Beobachter so mitverfolgt werden, daß ein optimaler Dialog erreicht ist. Ebenso ist die Darstellung von Verfahrensschemata, logistischen Abläufen und dgl. Ausgabeinformationen des tragbaren Computers unter gleichzeitiger Kontrollbeobachtung durch mehrere Beobachterpersonen möglich.The invention creates a portable computer whose device structure, which has two display parts, can be positioned in the operating position in such a way that, when several observers are present at the same time, the comfort of observation is improved. This means that, for example, the data entered into the computer by the user during a calculation or similar can be immediately followed by the customer participating in the conversation as an observer in such a way that an optimal dialogue is achieved. It is also possible to display process diagrams, logistical processes and similar output information from the portable computer while several observers are monitoring it at the same time.

Am erfindungsgemäßen Computer sind die zwei Displayteile konstruktiv derart mit dem Gehäuseteil verbunden, daß mit einfachen Verbindungsgliedern und geringem Transportraum ein sicherer Transport des in der Transportstellung zusammengeklappten Gerätes möglich ist.On the computer according to the invention, the two display parts are structurally connected to the housing part in such a way that safe transport of the device folded up in the transport position is possible with simple connecting links and little transport space.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und der Zeichnung, die ein Ausführungsbeispiel einesFurther details and advantages of the invention emerge from the following description and the drawing, which shows an embodiment of a

• ··

erfindungsgemäßen tragbaren Computers schematisch veranschaulicht. In der Zeichnung zeigen:a portable computer according to the invention is schematically illustrated. In the drawing:

Fig. 1 eine perspektivische Prinzipdarstellung eines tragbaren Computers mit zwei Displayteilen in Gebrauchsstellung,Fig. 1 a perspective schematic diagram of a portable computer with two display parts in use position,

Fig. 2 eine schematische Seitenansicht des tragbaren Computers gemäß Fig. 1 in Transportstellung, Fig. 2 is a schematic side view of the portable computer according to Fig. 1 in transport position,

Fig. 3 eine Seitenansicht ähnlich Fig. 2 mit dem Computer in Gebrauchsstellung,Fig. 3 is a side view similar to Fig. 2 with the computer in use position,

Fig. 4 eine Seitenansicht des Computers ähnlich Fig. 2 mit veränderten Verbindungsteilen für die Displayteile undFig. 4 a side view of the computer similar to Fig. 2 with modified connecting parts for the display parts and

Fig. 5 eine Seitenansicht des Computers gemäß Fig. 4 in Gebrauchsstellung.Fig. 5 is a side view of the computer according to Fig. 4 in the position of use.

In Fig. 1 ist ein insgesamt mit 1 bezeichneter tragbarer Computer dargestellt, dessen Bauteile in Gebrauchsstellung positioniert sind. Der als Laptop oder Notebook bezeichnete Computer 1 weist ein Gehäuseteil 2 auf, an dessen Unterseite eine Auflageplatte 3 und an dessen Oberseite eine Bedientastatur 4 vorgesehen ist.In Fig. 1, a portable computer, designated as a whole by 1, is shown, the components of which are positioned in the use position. The computer 1, designated as a laptop or notebook, has a housing part 2, on the underside of which a support plate 3 is provided and on the top of which a control keyboard 4 is provided.

Der tragbare Computer 1 gemäß der Erfindung weist im Bereich eines oberen Längsrandes 5 des Gehäuseteils 2 ein erstes Displayteil 6 als Benutzer-Displayteil auf, an dessen freien Endbereich 7 ein zweites Displayteil 8 als Beobachter-Displayteil angelenkt ist, so daß damit der Computer 1 eine zumindest zweiteilige Displayeinheit 9 aufweist (Fig. 1). In der dargestellten GebrauchsstellungThe portable computer 1 according to the invention has in the area of an upper longitudinal edge 5 of the housing part 2 a first display part 6 as a user display part, to the free end area 7 of which a second display part 8 is hinged as an observer display part, so that the computer 1 thus has an at least two-part display unit 9 (Fig. 1). In the illustrated position of use

ist das erste Displayteil 6 aus einer Transportstellung (Fig. 2) in eine Bedienstellung in Pfeilrichtung 10,10' {Fig. 3) aufgeklappt und das zweite Displayteil 8 seinerseits in eine Beobachterstellung verbracht (Fig. 3).the first display part 6 is opened from a transport position (Fig. 2) into an operating position in the direction of arrow 10,10' {Fig. 3) and the second display part 8 is in turn moved into an observer position (Fig. 3).

Damit kann der tragbare Computer 1 gleichzeitig in Blickrichtung 11 {Fig. 1) vom Benutzer bei der Dateneingabe kontrolliert, und in Blickrichtung 12 können von einer zweiten Person, z.B. einem Kunden oder dgl. Beobachter, die Eingabedaten gleichzeitig aufgrund einer parallelen Anzeigeschaltung nachvollzogen werden. Dabei ist für den Benutzer in Blickrichtung 11 und den Beobachter in Blickrichtung 12, gegenüber dem Benutzer, jeweils ein Bildschirm 13 bzw. 14 vorgesehen.This means that the portable computer 1 can be controlled by the user during data input in the direction of view 11 (Fig. 1) and a second person, e.g. a customer or similar observer, can simultaneously follow the input data in the direction of view 12 using a parallel display circuit. A screen 13 or 14 is provided for the user in the direction of view 11 and the observer in the direction of view 12, opposite the user.

In zweckmäßiger Ausführung ist das zweite Displayteil 8 über ein als Scharnier 15 ausgebildetes Verbindungsteil 15' am freien Ende des ersten Displayteils 6 so angelenkt, daß die in Fig. 2 dargestellte Transportstellung des Computers 1 mit geringem Raumbedarf möglich und die in Fig. 3 dargestellte Gebrauchsposition mit geringem Aufwand erreichbar ist.In a practical embodiment, the second display part 8 is hinged to the free end of the first display part 6 via a connecting part 15' designed as a hinge 15 so that the transport position of the computer 1 shown in Fig. 2 is possible with little space requirement and the use position shown in Fig. 3 can be reached with little effort.

In Fig. 4 und Fig. 5 ist eine zweite Ausführungsform des Computers 1' veranschaulicht, wobei die Verbindungsteile 15'' des ersten Displayteils 6 am Gehäuseteil 2 bzw. an der Verbindung zwischen den beiden Displayteilen 6, 8 vorgesehen sind. Dabei ist in beiden Verbindungsbereichen jeweils ein Doppelscharnierteil 16, 17 vorgesehen, so daß in der gemäß Fig. 4 veranschaulichten Transportstellung die beiden Bildschirme 13, 14 der Displayteile 6, 8 in eine innere Klappstellung verbringbar und damit weitgehend gegen Beschädigungen gesichert sind.In Fig. 4 and Fig. 5 a second embodiment of the computer 1' is illustrated, wherein the connecting parts 15'' of the first display part 6 are provided on the housing part 2 or on the connection between the two display parts 6, 8. In this case a double hinge part 16, 17 is provided in both connecting areas, so that in the transport position illustrated in Fig. 4 the two screens 13, 14 of the display parts 6, 8 can be brought into an inner folding position and are thus largely protected against damage.

Ebenso ist in Erweiterung der vorbeschriebenen Ausführungsform denkbar, daß der tragbare Computer im Bereich seiner Seitenränder mit einem oder jeweiligen Displayteilen (nicht dargestellt) versehen ist, die über entsprechende Verbindungsteile so befestigt sind, daß .der Beobachter entweder eine dem Benutzer gegenüberliegende Beobachterstellung oder neben dem Benutzer eine Beobachterstellung mit gleicher Blickrichtung einnehmen kann.It is also conceivable, in an extension of the previously described embodiment, that the portable computer is provided in the area of its side edges with one or more display parts (not shown) which are attached via corresponding connecting parts in such a way that the observer can either assume an observer position opposite the user or an observer position next to the user with the same viewing direction.

In der Gebrauchs- bzw. Beobachterstellung können die beiden Displayteile 6, 8 durch im Bereich ihrer Scharniere oder dgl. Verbindungsteile 15*, 15'' angeordnete Anschläge oder dgl. Rastelemente in ihrer Position lösbar festgelegt sein.In the use or observation position, the two display parts 6, 8 can be releasably fixed in their position by stops or similar locking elements arranged in the area of their hinges or similar connecting parts 15*, 15''.

Für eine Benutzung des Computers 1 durch eine Einzelperson kann das zweite Displayteil 8 über einen gesonderten Ein/Aus-Schalter (nicht dargestellt) abgeschaltet werden, so daß damit ein energiesparender Einsatz möglich ist.For use of the computer 1 by a single person, the second display part 8 can be switched off via a separate on/off switch (not shown), so that energy-saving use is possible.

Claims (5)

AnsprücheExpectations 1. Tragbarer Computer mit einem eine Bedientastatur aufweisenden Gehäuseteil (2), an dessen einem oberen Randbereich (5) eine ein Displayteil (6) für den Benutzer umfassende Displayeinheit (9) zwischen einer Transportstellung und einer Bedienstellung schwenkbar abgestützt ist, dadurch gekenn zeichnet , daß die Displayeinheit (9) zusätzlich zu dem Benutzer-Displayteil (6) mit einem weiteren, in eine beobachtungsgerechte Position verbringbaren Beobachter-Displayteil (8) versehen ist.1. Portable computer with a housing part (2) having a control keyboard, on an upper edge region (5) of which a display unit (9) comprising a display part (6) for the user is pivotably supported between a transport position and an operating position , characterized in that the display unit (9) is provided in addition to the user display part (6) with a further observer display part (8) which can be brought into an observation-friendly position. 2. Tragbarer Computer nach Anspruch 1, dadurch gekennzeichnet, daß das Beobachter-Displayteil (8) am freien Ende (7) des Benutzer-Displayteils (6) über zumindest ein Verbindungsteil (151^S11) mit einer zu der des Benutzer-Displays {6) parallelen Schwenkachse angelenkt ist.2. Portable computer according to claim 1, characterized in that the observer display part (8) is articulated at the free end (7) of the user display part (6) via at least one connecting part (15 1 ^S 11 ) with a pivot axis parallel to that of the user display (6). 3. Tragbarer Computer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Verbindungsteil (15'; 1 5'') als Scharnier (15), insbesondere Doppelscharnier (16,17), ausgebildet ist.3. Portable computer according to claim 1 or 2, characterized in that the connecting part (15'; 15'') is designed as a hinge (15), in particular double hinge (16, 17). 4. Tragbarer Computer nach Anspruch 1, dadurch4. Portable computer according to claim 1, characterized gekennzeichnet, daß das Beobachter-Displayteil (8) mit einem vom Benutzer-Displayteil (6) freigelassenen oberen Randbereich des Gehäuseteils (2) um eine horizontale und/oder vertikale Achse schwenkbar verbunden ist.characterized in that the observer display part (8) is pivotably connected to an upper edge region of the housing part (2) left free by the user display part (6) about a horizontal and/or vertical axis. 5. Tragbarer Computer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Beobachter-Displayteil (8) mit einem Ein/Aus-Schalter versehen ist.5. Portable computer according to one of claims 1 to 4, characterized in that the observer display part (8) is provided with an on/off switch.
DE9406985U 1994-04-27 1994-04-27 Portable computer Expired - Lifetime DE9406985U1 (en)

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DE9406985U DE9406985U1 (en) 1994-04-27 1994-04-27 Portable computer

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546786A1 (en) * 1995-12-14 1997-06-19 Rainer Englert Portable information storing device
EP0807879A2 (en) * 1996-05-17 1997-11-19 Sharp Kabushiki Kaisha Information processing apparatus including a main body and a lid body
FR2770725A1 (en) * 1997-11-03 1999-05-07 Source Dev Flat panel display monitor and supporting stand
WO2000029930A1 (en) * 1998-11-16 2000-05-25 Checkout Holdings Limited Computer displays
EP1037132A2 (en) * 1999-03-16 2000-09-20 Michael Dietz Portable presentation device
DE19924694A1 (en) * 1999-05-28 2001-03-08 Joachim Schweizer Presentation device has lap-top, main and second screens, controller that rotates image on main screen by 180 degrees when main screen is pivoted by 220 degrees
DE10010267A1 (en) * 2000-03-02 2001-09-13 Akmal Wassef Abdalla Display terminal has individual screens provided on front and back sides of housing
DE20018192U1 (en) * 2000-10-25 2002-02-28 Frigge, Jens, 53125 Bonn Device for displaying information
DE10043220A1 (en) * 2000-09-01 2002-03-28 Carl H Hahn Laptop computer arrangement, enables compact unit to be formed by adding second cover and snapping-shut first cover into specified position
FR2816093A1 (en) * 2000-10-26 2002-05-03 Stephane Abouaf Laptop computer with dual screens includes hinged support enabling second screen to be displayed to audience
GB2373068A (en) * 2001-01-19 2002-09-11 Senator Internat Ltd Computer with two displays
DE202004020042U1 (en) * 2004-12-22 2005-04-21 Haessler, Dieter, Dr. Dr.med. Presentation, e.g. laptop-type, device for output of digitally stored image data has two or move pivoting display screens that are connected to a base unit that has interfaces for connection of external data storage elements
DE202005016714U1 (en) * 2005-10-24 2007-03-01 Bilstein, Andreas, Dipl.-Biol. Flat screens operating and attaching device for e.g. mobile computer, has set of hinges, where flat screens are firmly and movably connected with imaging device by hinges, where screen reproduces same or different image information
DE102005040279A1 (en) * 2005-08-24 2007-03-01 Mepro Gmbh Notebook or laptop computer has a pair of hinged display panels that can be used in making a presentation
EP2194439A1 (en) * 1995-11-24 2010-06-09 Nokia Corporation Double-acting communication device
US8462103B1 (en) 1998-12-23 2013-06-11 Jerry Moscovitch Computer display screen system and adjustable screen mount, and swinging screens therefor
US9300099B2 (en) 2010-03-17 2016-03-29 Jerry Moscovitch Linkable electronic display devices

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019755A1 (en) * 1990-06-21 1992-01-09 Triumph Adler Ag Lap-top processor with removable back-lit LCD - which can be placed on projector for presentations or demonstrations
US5224060A (en) * 1992-07-29 1993-06-29 Ma Hsi Kuang Mobile computer with pen base/keyboard input modes
US5278779A (en) * 1992-06-26 1994-01-11 Conway Kevin M Laptop computer with hinged keyboard

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019755A1 (en) * 1990-06-21 1992-01-09 Triumph Adler Ag Lap-top processor with removable back-lit LCD - which can be placed on projector for presentations or demonstrations
US5278779A (en) * 1992-06-26 1994-01-11 Conway Kevin M Laptop computer with hinged keyboard
US5224060A (en) * 1992-07-29 1993-06-29 Ma Hsi Kuang Mobile computer with pen base/keyboard input modes

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194439A1 (en) * 1995-11-24 2010-06-09 Nokia Corporation Double-acting communication device
DE19546786A1 (en) * 1995-12-14 1997-06-19 Rainer Englert Portable information storing device
EP0807879A2 (en) * 1996-05-17 1997-11-19 Sharp Kabushiki Kaisha Information processing apparatus including a main body and a lid body
EP0807879A3 (en) * 1996-05-17 1999-01-20 Sharp Kabushiki Kaisha Information processing apparatus including a main body and a lid body
US5900848A (en) * 1996-05-17 1999-05-04 Sharp Kabushiki Kaisha Information processing apparatus
FR2770725A1 (en) * 1997-11-03 1999-05-07 Source Dev Flat panel display monitor and supporting stand
GB2346996A (en) * 1998-11-16 2000-08-23 Checkout Holdings Limited Computer displays
GB2346996B (en) * 1998-11-16 2001-01-03 Checkout Holdings Ltd Computer displays
WO2000029930A1 (en) * 1998-11-16 2000-05-25 Checkout Holdings Limited Computer displays
US8462103B1 (en) 1998-12-23 2013-06-11 Jerry Moscovitch Computer display screen system and adjustable screen mount, and swinging screens therefor
EP1037132A2 (en) * 1999-03-16 2000-09-20 Michael Dietz Portable presentation device
EP1037132A3 (en) * 1999-03-16 2003-03-19 Michael Dietz Portable presentation device
DE19924694A1 (en) * 1999-05-28 2001-03-08 Joachim Schweizer Presentation device has lap-top, main and second screens, controller that rotates image on main screen by 180 degrees when main screen is pivoted by 220 degrees
DE10010267A1 (en) * 2000-03-02 2001-09-13 Akmal Wassef Abdalla Display terminal has individual screens provided on front and back sides of housing
DE10043220C2 (en) * 2000-09-01 2002-07-11 Carl H Hahn Laptop computer
DE10043220A1 (en) * 2000-09-01 2002-03-28 Carl H Hahn Laptop computer arrangement, enables compact unit to be formed by adding second cover and snapping-shut first cover into specified position
DE20018192U1 (en) * 2000-10-25 2002-02-28 Frigge, Jens, 53125 Bonn Device for displaying information
FR2816093A1 (en) * 2000-10-26 2002-05-03 Stephane Abouaf Laptop computer with dual screens includes hinged support enabling second screen to be displayed to audience
GB2373068A (en) * 2001-01-19 2002-09-11 Senator Internat Ltd Computer with two displays
DE202004020042U1 (en) * 2004-12-22 2005-04-21 Haessler, Dieter, Dr. Dr.med. Presentation, e.g. laptop-type, device for output of digitally stored image data has two or move pivoting display screens that are connected to a base unit that has interfaces for connection of external data storage elements
DE102005040279A1 (en) * 2005-08-24 2007-03-01 Mepro Gmbh Notebook or laptop computer has a pair of hinged display panels that can be used in making a presentation
DE202005016714U1 (en) * 2005-10-24 2007-03-01 Bilstein, Andreas, Dipl.-Biol. Flat screens operating and attaching device for e.g. mobile computer, has set of hinges, where flat screens are firmly and movably connected with imaging device by hinges, where screen reproduces same or different image information
US9300099B2 (en) 2010-03-17 2016-03-29 Jerry Moscovitch Linkable electronic display devices

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