KR200387323Y1 - Apparatus for presentation - Google Patents

Abstract

The present invention relates to a presentation device. The presentation device according to the present invention is any one of a display unit including a first display located on one side of the cover, a second display located on one side of the main body, and a display controller for controlling the first display and the second display. A microphone unit including a beam projector unit including a beam projector accommodated in an installation groove positioned in one and a beam projector controller controlling the beam projector, a microphone located in any one of a main body and a cover, and a microphone driving unit driving the microphone; It includes a camera unit including a camera located on any one of the main body and the cover and a camera driver for driving the camera, and a central control unit for generating a control signal for controlling each component and transmitting the control signal to the corresponding component.

Description

Apparatus for presentation}

The present invention relates to a presentation device.

In more advanced societies, it is becoming more common for sales representatives to visit customers directly. This trend is becoming common in all industries, including pharmaceuticals, insurance, banking and real estate. This trend requires a discussion of economic and efficient presentation.

Typically, sales representatives provide product documentation such as pamphlets, brochures, etc. to customers, or explain the product using a laptop that can output the presentation. Pamphlets, brochures, etc. provided in the form of documents have the advantage of attracting temporary attention to the customer, but most of them are often disposed of as waste. As a result, there is a problem that causes an economic cost increase to all companies, sales personnel, customers, and the like.

Recently, in order to overcome such a problem, a salesperson often introduces a product in front of a customer with a notebook. In this case, too much boot time is required to halve a customer's attention.

In addition, the presentation using the notebook, not only takes too much time to run the application, but also requires a large memory for high-capacity applications, there is a problem that the basic specifications are also high-end cost excessively.

In addition, in order to efficiently present a beam projector, a beam projector should be used as needed, which is inconvenient to prepare a laptop and a beam projector separately.

In addition, when giving a presentation using a notebook, there is a problem that the salesperson and the customer must look at the same direction.

In addition, when there is a customer response or a requirement, it is cumbersome to write it in a document or write a file.

An object of the present invention is to provide a presentation apparatus further comprising an output means for outputting the presentation content for the presentation target.

In addition, an object of the present invention is to provide a presentation device that enables an efficient presentation using a beam projector.

In addition, an object of the present invention is to provide a presentation device capable of recording and recording the presentation process.

In addition, an object of the present invention is to provide a presentation device capable of mass dissemination with a significantly reduced memory capacity.

In order to achieve the above objects, according to an aspect of the present invention, in a presentation device comprising a main body and a cover, a first display located on one side of the cover, a second display and the second display located on one side of the main body A beam projector unit including a display unit including a display controller for controlling a first display and a second display, a beam projector housed in an installation groove located at any one of the main body and the cover, and a beam projector controller for controlling the beam projector And a microphone unit including a microphone located at any one of the main body and the cover and a microphone driving unit driving the microphone, a camera unit including a camera located at any one of the main body and the cover and a camera driving unit driving the camera. And control to control the respective components. It is possible to provide a presentation device including a central control unit for generating a signal and transmitting the signal to a corresponding component.

In a preferred embodiment, the presentation device may further include a power supply including a battery for supplying power and a power converter for adjusting the power corresponding to the device to which the power is supplied.

The presentation device may include an infrared sensor for receiving a remote control signal from a wireless remote controller, an infrared LED for transmitting a signal to the wireless remote controller, and an infrared transmission / reception control unit for controlling transmission and reception of signals by combining with the infrared sensor and the infrared LED. It may further include an infrared transceiver comprising a.

The presentation device may further include a selection unit located at one side of the main body and including a key pad including a plurality of selection buttons for each function, and a key scan circuit corresponding to the keypad.

In addition, the presentation device may further include a communication unit including a USB connector and a USB controller for transmitting and receiving data with another computing device.

The presentation apparatus may further include a storage unit including at least a ROM for storing a driving system, a RAM that is a temporary storage place of data, an auxiliary storage device for storing an application, and an interface connecting the auxiliary storage device and the central control unit. Can be.

The auxiliary memory device may be any one of an MMC, an SMC, a flash memory, and a floppy diskette.

In addition, at least one of the first display and the second display is characterized in that the LCD.

In addition, the first display is located on the back of the cover, the second display is characterized in that located on the upper surface of the main body.

According to another aspect of the present invention, it is possible to provide a presentation device including a cover on which a first display is installed on one side, a body on which a second display is installed on an upper surface, and a connection member coupling the cover and the body.

In a preferred embodiment, the first display is located on the back of the cover.

In addition, at least one of the first display and the second display is characterized in that the LCD.

In addition, the connecting member may include a slide member for the cover to slide the main body and a rotating member for rotating the cover about the main body after the slide is completed.

Or by the connecting member, any one of the cover and the main body is characterized in that the self rotates around the other.

The presentation apparatus may further include a beam projector accommodated in an installation groove formed in any one of the main body and the cover, and a beam projector controller for controlling the beam projector.

Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing the interior of a presentation device according to a preferred embodiment of the present invention.

Referring to FIG. 1, a presentation device (hereinafter referred to as a presenter) 100 includes a power supply unit, a communication unit, a selection unit, a liquid crystal display unit, an infrared transceiver unit, a beam projector unit, a storage unit, a microphone unit, a camera unit, and a central control unit (CPU). , 101). Here, the presenter 100 is formed of a cover and a main body. A brief description of each component is given below.

The power supply unit includes a battery 145 for supplying power for driving the presenter 100 and a power converter 143 for converting a predetermined power source into a power value corresponding to each device. In another preferred embodiment of the present invention, the battery 145 may be replaced by a power connector for drawing external power. The power conversion unit 143 receives the control signal of the central control unit 101 and converts the power to a power value corresponding to the corresponding specific device to supply power. According to the control signal, it may be determined whether a specific device is used.

The communication unit may be configured with various interfaces for communication with other computer systems (for example, personal computers), but for convenience of description, a USB port will be adopted. The communication unit includes a USB connector 141 and a USB controller 139 for connection with another computer system. In this embodiment, communication with other computer systems is performed through the USB ports 141 and 139, and document files for presentations are downloaded from other computer systems, or the presentation targets (especially customers) generated using the presenter. You can upload your recordings or recordings of your reactions to other computer systems.

The selection unit includes a plurality of selection buttons 137 that can be set in advance or set to perform various functions, and a key scan circuit 135 for checking which buttons are input. In another preferred embodiment of the present invention, the selector may be replaced with a software-implemented user interface displayed on the liquid crystal display. In this case, the liquid crystal display should implement a touch screen function. The presenter (particularly, a salesperson) may control each component of the presenter by using the selection unit or a remote controller to be described later, or may control the contents to be displayed to the presentation target person.

The liquid crystal display includes a first LCD 111 on which a file for presentation is displayed and a second LCD 113 and a first LCD on which an interface for controlling a display process of the file for the presentation or a file for the presentation is output. And an LCD controller 109 for controlling the 111 and the second LCD 113. The first LCD 111 is positioned on the back surface of the presenter 100 so as to face the presentation object. In addition, the second LCD 113 is located on the upper surface of the main body of the presenter 100 so that the presenter can see. This positional relationship is specifically disclosed in FIGS. 3 to 6. The first LCD 111 and the second LCD 113 may be implemented such that the presentation contents are output in the same manner. In addition, the presentation content may be output to the first LCD 111, and the screen for controlling the presentation content may be output to the second LCD 113.

The infrared transmitting and receiving unit is an infrared sensor 105 for receiving an infrared signal transmitted from an external device (for example, a wireless remote controller), an infrared LED 107 for transmitting an infrared signal to an external device, and an infrared transmitting / receiving control unit for controlling them. (103). In another preferred embodiment of the present invention, in order to receive the remote control signal received from the wired remote controller, the infrared transceiver may be replaced with a wired remote control signal transceiver.

The beam projector unit beam projector 117 and the beam projector 117 for projecting the screen output to the first LCD 111 and / or the second LCD 113 with a beam to project on an external screen (not shown) It includes a beam projector controller 115 for controlling. The beam projector unit will be described in detail with reference to FIGS. 7 and 8.

The storage unit includes a ROM 127 in which a drive system of the presenter 100, etc. are stored, a RAM 129, which is a temporary storage place of data, and an auxiliary storage device 133, which stores a presentation file, and the like. And an interface 131 connecting the central control unit 101. In the preferred embodiment of the present invention, the auxiliary memory device 133 may be a memory card having a large storage capacity and a small size such as MMC, SMC, flash memory, etc., but may be a floppy diskette.

The microphone unit and the camera unit may record and / or record the response of the presenter (particularly, the customer), or record and / or record the presentation of the presenter (particularly, the salesperson). And a microphone driver 123 for driving the microphone 125 and a camera driver 119 for driving the camera 121, respectively.

The central control unit 101 controls the components by generating a signal for controlling all the components of the presenter 100 and transmitting the signal to the control part of the corresponding component. That is, the central control unit 101 transmits a control signal for controlling the USB port to the USB controller 139, transmits a control signal for controlling the selection unit to the key scan circuit 135, and controls the liquid crystal display unit. Transmits a control signal to the LCD controller 109, transmits a control signal for controlling the infrared transceiver and the infrared transmission and reception control unit 103, transmits a control signal for controlling the beam projector unit to the beam projector controller 115, The control signal for controlling the storage unit is transmitted to the ROM 127, the RAM 129, and the interface 131, respectively, and the control signal for controlling the microphone unit is transmitted to the microphone driver 123, and the control for controlling the camera unit. The signal is transmitted to the camera driver 119.

In an embodiment of the present invention, the presenter 100 preferably stores a viewer program that performs only output to a presentation file, such as a word processor, in the ROM 127. Compared with a high-capacity application installed in a general computing system, since a viewer program, which is a relatively low-capacity application, is installed, booting time of the presenter 100 may be significantly reduced, thereby maintaining the interest of the presentation target. In addition, since a viewer program or the like, which is a low-capacity application, is installed, the capacity of the memory can be drastically reduced, and a cheaper presentation device can be spread. In another embodiment of the present invention, when the presentation content is multimedia, it is preferable that a multimedia player capable of playing the content is further stored in the ROM 127.

In an embodiment of the present invention, the presentation file, which is recognized by the viewer program and stored in the auxiliary storage device 133 or the like, or is input through the USB port, is located on the back of the presenter 100. And / or output to the second LCD 113 located on the upper surface of the main body. In addition, the presentation file recognized by the viewer program may be irradiated with the beam by the beam projector 117 and projected on an external screen (not shown). In addition, the microphone 125 and the camera 121 may record and / or record the response of the presentation subject according to the output of the presentation file, or record and / or record the presentation status of the presenter. As a result, there is no need to document the customer response or the performance of the salesperson. The series of processes described above may be performed by the presenter through the infrared transceiver unit by operating the selection button 137 of the selector or by operating a remote controller (not shown).

2 is a block diagram showing an embodiment of a computing environment that can partially or completely implement the presenter according to an embodiment of the present invention.

Referring to FIG. 2, the computing environment is merely one example of a computing system for ease of understanding and is not intended to impose any limitation or special limitation on the scope of the present invention. The computing environment should not be construed as having any dependencies or any requirements with respect to any one or any combination of components shown in the exemplary computing environment described in FIG. 2 above.

The computing environment 200 that may be implemented by the presenter may be implemented as components or environmental elements of a plurality of various general purpose or special purpose computing systems. Commonly used components and environmental components of computing systems include personal computers, server computers, various types of clients (including thin clients or thick clients), laptop computers, and handheld PCs. Programmable home appliances, network PCs, minicomputers, mainframes, game console devices, PDAs, mobile terminals and distributed computing environments including any of the above systems.

The computing environment 200 includes a general purpose computing system in the form of a computer. Components of the computer may include a system bus 227 that connects one or more processing units 229, system memory 210, and various system components including the processing unit 229 to the system memory 210. It may include. The processing unit 229 may process various execution instructions to control the computing device and communicate with other electronic devices and computing devices.

The system bus 227 includes a memory bus or a memory controller, a peripheral bus, and a local bus or processor bus using any of a variety of bus structures, and can represent many different types of bus structures. For example, these structures include the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MCA) bus, the Enhanced ISA (EISA) bus, and the Video Electronics Standards Association. Association (VESA) local bus, Peripheral Component Interconnect (PCI) bus.

Computer environment 200 generally includes a variety of computer-readable media. Such a medium can be any available medium that can be accessed by a computer device, and includes both volatile and nonvolatile media, removable and non-removable media. System memory 210 includes computer readable media in the form of volatile memory, such as random access memory (RAM) 220, or non-volatile memory, such as read-only memory (ROM) 221. For example, during initial start-up, a basic input / output system (BIOS) 219, which includes basic routines that help transfer information between devices in the computing device, is stored in the ROM 221. Stored. RAM 220 typically includes data program modules that are readily accessible or currently being operated on by processing unit 229.

The computing device may include other removable, fixed, volatile and nonvolatile computer storage media. The computer storage media includes, for example, hard disk drives for reading from and writing to fixed, nonvolatile magnetic media (not shown), and from removable, nonvolatile magnetic disks such as 'floppy disks'. Magnetic disc drive for reading and writing to, and optical disc drive for reading from and writing to removable, nonvolatile optical discs such as CD-ROM, DVD-ROM, or any other type of optical media. Included.

The hard disk drive, magnetic disk drive, and optical disk drive are each connected to the system bus 227 by one or more data media interfaces 230. Alternatively, hard disk drives, magnetic disk drives, and optical disk drives may be connected to the system bus 227 by a SCSI interface.

Disk drives and associated computer readable media provide non-volatile storage of computer readable instructions, data structures, program modules, and other data for a computing device. Although the above example illustrates a hard disk 231, a removable magnetic disk and a removable optical disk, other types of computer readable media capable of storing data accessible by a computer, such as magnetic cassettes or other magnetic storage devices, flash memory cards , CD-ROM, digital versatile disks (DVD) or other optical storage, RAM, ROM, electrically-erasable programmable read-only memories (EEPROM), and the like. It should be understood that they can be used to implement computing systems and environments.

For example, a number of program modules, including middleware 211, one or more application programs 213, other program modules 215, and program data 217, may be used in a hard disk 231, magnetic disk, optical disk. It may be stored on a disk, a ROM 221 and a RAM 220. Each such middleware 211, one or more application programs 213, other program modules 215, and program data 217 (or any combination thereof) may include a program component according to the present invention. Can be. The computing device may include various computer readable media identified as communication media.

Communication media typically embody computer readable instructions, data structures, program modules, or other data within a modulated data signal, such as a carrier wave or other transmission mechanism, and include any information delivery media. do. The term 'modulated data signal' refers to a signal that has a characteristic set of one or more signals, or that has been modified in such a manner as to encode information in the signal. For example, communication media include wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, RF, infrared, and other wireless media. It is not limited to this.

Combinations of any of the above may also be included within the scope of computer readable media. A user may enter commands and information into the computing system through input devices such as an input device and a pointing device—eg, a “mouse”. Other input devices may include a microphone, joystick, game pad, controller, satellite dish, serial port, scanner, or the like. These input devices and other input devices are connected to the processing unit 229 via input / output interfaces 225 connected to the system bus 227, but other interface and bus structures, such as parallel ports, game ports, and general purpose serial buses. (universal serial bus; USB).

The output device may also be connected to the system bus 227 through the input / output interface 225. The computing device may operate in a networked environment using logical connections of one or more remote computers, such as the remote computing device. For example, the remote computing device may be a personal computer, a portable computer, a server, a router, a network computer, a peer device or other common network node.

A remote computing device is shown as a portable computer that may include many or all of the elements and features described herein with respect to the computing device. Logical connections between a computing device and a remote computer are described as a local area network (LAN) and a general wide area network (WAN).

Such networking environments are commonplace in offices, enterprise-wide computer networks, intranets and the Internet. When implemented in a LAN networking environment, the computing device is connected to the local area network through a network interface or network adapter. When implemented in a WAN networking environment, the computing device typically includes other means for establishing communications over a modem or wide area network.

The modem—which may be internal or external to the computing device—may be connected to the system bus 227 via the input / output interface 225 or other suitable mechanisms. In a networked environment such as that shown by computing environment 100, program modules, or portions thereof, described with respect to the computing device may be stored in a remote memory storage device.

Figure 3 is a perspective view schematically showing the appearance of the presentation device according to a preferred embodiment of the present invention.

Referring to FIG. 3, the presenter 100 includes a cover 301 and a main body 303. The first LCD 305 is positioned on the rear surface of the cover 301, and the second LCD 307 is positioned on the upper surface of the main body 303. The first LCD 305 outputs a presentation file to be shown to the presentation target. In addition, the second LCD 307 outputs an interface for controlling the output process of the presentation file to be displayed to the presentation performer or the presentation file on the first LCD 305. In addition to the second LCD 307, a plurality of selection buttons that a presentation performer selects to perform a specific function may be located on an upper surface of the main body 303. The positional relationship between the first LCD 305 and the second LCD 307 of the presenter 100 will be described in more detail with reference to FIGS. 4 and 5.

4 is a view schematically showing an opening process of a presentation device according to an embodiment of the present invention.

Referring to FIG. 4, in order to open the presenter, when the main body 303 is pushed in the direction of the arrow or the cover 301 is pushed in the direction opposite to the arrow, the slide member 401 is located between the main body 303 and the cover 301. ) Slides the main body 303 in the direction of the arrow and / or the cover 301 in the direction opposite the arrow. After the slide is completed, when the main body 303 is rotated relative to the cover 301, the main body 303 is rotated by the rotating member 403 to have a shape as shown in FIG. In another preferred embodiment of the present invention, when the slide member 401 is operated, that is, when the cover is opened or closed, it can be implemented to turn on or off the power of the presenter. Specifically, the power switch of the presenter is operated by being triggered by the operation of the slide member 401. In the present specification, specific shapes of the slide member 401 and the rotating member 403 that are easy to implement to those skilled in the art will not be described separately.

5 is a view schematically showing a relationship between a main body and a cover of a presentation device according to another embodiment of the present invention.

Referring to FIG. 5, the presenter's cover 301 and the main body 303 are coupled by the rotation member A. Referring to FIG. By rotating the rotating member A, the first LCD 305 positioned on one surface of the cover 301 may be positioned in the direction of the presentation subject.

Figure 6 is a perspective view schematically showing the appearance of the presentation device according to a preferred embodiment of the present invention.

Referring to FIG. 6, the presenter includes a cover 301 and a main body 303, wherein a first LCD 305 is positioned on a rear surface of the cover 301, and a second LCD 307 is disposed on an upper surface of the main body 303. Is located. In addition, a camera connection connector 609 may be located at one side of the cover 301 to connect the camera. On one side of the main body 303, a battery charging supply unit 607 capable of charging a battery, a USB connector 605, an auxiliary storage device inlet 603 for inserting an auxiliary storage device such as a floppy diskette, and a beam projector A beam projector lead-in unit 601, etc. capable of pulling in may be positioned. In addition, an infrared transceiver (not shown) for receiving an infrared signal generated from the remote controller 611 may be located on the other side of the main body 303. A part of the upper surface of the main body 303 may include a keypad, which is a combination of a plurality of selection buttons for the presenter to select a specific function.

7 is an enlarged perspective view illustrating a part of a presentation device equipped with a projector according to an exemplary embodiment of the present invention, and FIG. 8 is an exploded perspective view of the presentation device according to an exemplary embodiment of the present invention.

Referring to FIG. 7, the projector 700 is mounted in an installation groove 801 inside one side of the main body 303 of the presenter. The projector 700 beams the content output to the first LCD (not shown) located on the back of the cover 301 of the presenter and / or the second LCD (not shown) located on the top of the main body 303. To project on an external screen (not shown). The projector 700 may be detachably installed in the installation groove 801 of the main body 303 as one assembly, and may be installed for each component. The projector 700 changes a path of a light source 701 that irradiates a light beam, a liquid crystal panel 703 that selectively transmits light incident from the light source 701, and a path of light that has passed through the liquid crystal panel 703. And a projection lens 707 for magnifying and projecting the image to be focused. The light source 701 includes a lamp for generating light such as metal halides and xenon, and a reflector for reflecting the light emitted from the lamp to guide a traveling path. The light irradiated from the lamp is reflected by the reflector and projected onto the liquid crystal panel 703.

The liquid crystal panel 703 includes a polarizing plate 705 before and after the image generating means, and generates an image based on incident light. The projection lens 707 includes a plurality of lens units, and determines the degree of focus and the enlargement ratio of the image transmitted through the liquid crystal panel 703 to project the enlarged image on the screen. When the projector 700 is mounted in the installation groove 801 of the presenter's main body 303, the lens 709 positioned at the end of the projection lens 707 and finally projecting the light onto the screen corresponds to the main body ( It is installed to protrude through the opening 803 formed on one side of the 303, it is preferable to be installed to enable the vertical rotation of the left and right. When the lens 709 does not need rotation, it is preferable that a locking device is further provided to be fixed in position.

The driving circuit of the projector 700 is integrally embedded in a main circuit board (not shown) inside the presenter, and has a mode selection function for selecting an operation mode for operating the presenter and the projector 700 separately or simultaneously. Can be. Therefore, when the presenter wants to output the presentation content only to the first LCD and / or the second LCD, the power supply to the projector 700 is cut off, and if not, the power can be supplied to the projector 700.

The present invention is not limited to the above embodiments, and many variations are possible by those of ordinary skill in the art within the spirit of the present invention.

According to the present invention, since it is not necessary to provide document materials such as pamphlets that have been provided to the presentation targets (particularly, customers), waste of resources can be reduced. In addition, according to the present invention, since the presentation device is designed for presentation only, boot time is drastically reduced, and the effects of faster speed, improved battery life, and lower price can be expected.

In addition, according to the present invention, since the customer's response can be recorded and recorded, not only can the customer's requirements be more closely understood, but also can be used as evidence for the presentation event itself.

In addition, according to the present invention, since the beam projector is built in the presentation device, the inconvenience of having to prepare the beam projector separately can be eliminated.

When the effects of the present invention are divided from various viewpoints as follows.

As a salesperson, you can use the dual LCD to make more effective presentations, record and record customer responses in a timely manner, and deliver presentations more quickly when customers want them. There is.

From the standpoint of the company, it is possible to reduce the waste of document materials such as pamphlets, give presentations suitable for the company's policies, easily identify customer requirements by recording and recording, and sales representatives' ability to perform presentations. It is easy to grasp, and it is possible to supply a lower-priced presentation device than an existing notebook, and there is a cost saving effect because it does not need to print separately when producing, revising, or modifying brochures and brochures.

From the customer's point of view, no pamphlets, such as pamphlets, accumulate, more professional presentations can be provided at the desired time, and the specific requirements can be revealed in a timely manner.

1 is a block diagram schematically showing the interior of a presentation device according to a preferred embodiment of the present invention;

Figure 2 is a block diagram showing an embodiment of a computing environment that can partially or completely implement the presenter according to an embodiment of the present invention.

Figure 3 is a perspective view schematically showing the appearance of the presentation device according to a preferred embodiment of the present invention.

4 is a view schematically showing an opening process of a presentation device according to an embodiment of the present invention.

5 is a view schematically showing a relationship between a body and a cover of a presentation device according to another preferred embodiment of the present invention.

Figure 6 is a perspective view schematically showing the appearance of the presentation device according to a preferred embodiment of the present invention.

7 is an enlarged perspective view showing a part of a presentation device equipped with a projector according to an embodiment of the present invention.

8 is an exploded perspective view of a presentation device according to an embodiment of the present invention.

Claims (15)

In the presentation device comprising a main body and a cover, A display unit including a first display positioned at one side of the cover, a second display positioned at one side of the main body, and a display controller controlling the first display and the second display; A beam projector unit including a beam projector accommodated in an installation groove located in any one of the main body and the cover, and a beam projector controller controlling the beam projector; A microphone unit including a microphone located at any one of the main body and the cover and a microphone driving unit driving the microphone; A camera unit including a camera located at any one of the main body and the cover and a camera driving unit driving the camera; And And a central control unit for generating a control signal for controlling each of the components and transmitting the control signal to a corresponding component. The method of claim 1, And a power supply unit including a battery for supplying power and a power conversion unit for adjusting power in accordance with a powered device. The method of claim 1, Infrared transceiver for receiving a remote control signal from a wireless remote control, an infrared ray transmitting and receiving unit including an infrared LED for transmitting a signal to the wireless remote control and an infrared transmission and reception control unit for controlling the transmission and reception of the infrared sensor and the infrared LED A presentation device that includes. The method of claim 1, Located on one side of the main body, the presentation device further comprises a selection unit including a key pad including a plurality of selection buttons for each function and a key scan circuit corresponding to the keypad. The method of claim 1, Presentation device further comprising a communication unit including a USB connector and a USB controller for transmitting and receiving data with another computing device. The method of claim 1, And a storage unit including at least a ROM storing a driving system, a RAM serving as a temporary storage place of data, an auxiliary storage device in which an application is stored, and an interface connecting the auxiliary storage device and the central control unit. The method of claim 6, And the auxiliary storage device is any one of an MMC, an SMC, a flash memory, and a floppy diskette. The method of claim 1, At least one of the first display and the second display is an LCD. The method of claim 1, And the first display is located on a rear surface of the cover, and the second display is located on an upper surface of the main body. A cover on which a first display is installed; A main body on which a second display is installed; And Connecting member for coupling the cover and the main body Presentation device comprising a. The method of claim 10, The first display is located at the back of the cover; The method of claim 10, At least one of the first display and the second display is an LCD. The method of claim 10, The connecting member A slide member for the cover to slide the main body; And And a cover for rotating the cover about the main body after the slide is completed. The method of claim 10, By the connecting member, Any one of the cover and the main body rotates itself about the other. The method of claim 10, A beam projector accommodated in an installation groove formed in any one of the main body and the cover; And And a beam projector controller for controlling the beam projector.