Patent Description:
In general, a portable multimedia terminal refers to an electronic device capable of performing wireless communication with a counterpart while being carried by a user. In consideration of portability, the multimedia terminal tends to have a small size and a slim structure while being easily gripped with lightweight, and moves toward multimedia that can realize more various functions.

In particular, the multimedia terminal in the future may be used with miniaturization, lightweight, multi-function, and multi-purpose, and may be transformed to adapt to various multimedia environments or Internet environments.

In addition, the portable multimedia terminal is an electronic device that is extensively used anywhere in the world regardless of age or sex and is increasingly recognized as necessities to be carried at all times.

Conventional multimedia terminals are classified into various types depending on external appearance thereof. For example, portable terminals are classified into bar-type, flip-type, or folder-type communication devices according to their external appearance. A bar-type communication device refers to a device where a single housing is configured as a bar-type, a flip-type communication device refers to a device where a flip is rotatably coupled to a bar-type housing by a hinge device, and a folder-type communication device refers to a device where a folder is foldably and rotatably connected to a single bar-type housing by a hinge device.

Such multimedia terminals may provide multimedia contents such as Internet surfing, movie watching and music listening, as well as voice and video calls, and recently perform functions such as e-commerce and mobile banking.

As a related art, a terminal disclosed in <CIT> proposes a configuration capable of expanding a display, but there is a problem of weak security since all contents are provided from one terminal. <CIT> discloses a multimedia terminal carrying package for e.g. a cellular phone, having a portable terminal installed at one end of a terminal mounting part, a display section adjacently formed to a side of the portable terminal through a soft foldable section, and a folding keyboard.

Accordingly, a new technique is required to overcome the limitations of the related art as described above.

In addition, as the contents are developed recently, the contents can be provided on a dual screen or provided by using a separate keypad, so a new technique capable of interworking a plurality of multiple terminals as needed is required.

Meanwhile, the above-described background art is technical information that the inventor possesses to suggest the present invention or acquires during the suggestion of the present invention, and it is not necessarily regarded as a known technique that has been disclosed to the general public prior to the filing of the present invention.

An object of embodiments disclosed herein is to provide a foldable multimedia terminal capable of mounding and using one terminal as needed while providing a keyboard input environment or a plurality of screens through at least one other terminal unit.

In addition, an object of embodiments disclosed herein is to provide a foldable multimedia terminal capable of easily mounting or separating a terminal.

Further, an object of embodiments disclosed herein is to provide a foldable multimedia terminal capable of protecting a terminal mounted thereon by shielding the terminal such that the terminal can be touched.

In addition, an object of embodiments disclosed herein is to provide a foldable multimedia terminal capable of automatically operating another terminal provided on a rear surface of a foldable keyboard when the foldable keyboard is folded.

Further, it is an object to provide a foldable multimedia terminal capable of improving the security by independently separating open type contents and security type contents such that the open type contents can be distinctly executed by an open function unit and the security type contents can be distinctly provided (executed) by a security function unit.

As a technical solution for achieving the above-described technical objects, a foldable multimedia terminal according to claim <NUM> is disclosed.

According to any one of the above-described technical solutions, since the first terminal unit can be separably accommodated in the terminal holder, input/output can be performed through the foldable keyboard while using the first terminal unit mounted on the terminal holder, and since the second terminal unit is provided on the rear surface of the foldable keyboard, the first terminal unit and the second terminal unit can be used as a dual screen by folding the foldable keyboard.

In addition, according to any one of the above-described technical solutions, since the second terminal unit interworks with the first terminal unit and provides the input/output environment of the first terminal unit instead of the first terminal unit, when the first terminal unit is folded in the form of the foldable keyboard, the function of the first terminal unit may be performed by the second terminal unit.

Further, according to any one of the above-described technical solutions, the terminal holder includes the mounting panel having the mounting groove, so that the terminal unit is seated in the mounting groove, and thus, one of the first terminal unit and the second terminal unit separated from the foldable keyboard can be easily mounted and used.

In addition, according to any one of the above-described technical solutions, since the touch cover is coupled to the mounting panel while shielding the terminal unit such that the terminal unit can be touched, the terminal unit seated on the mounting panel can be protected from the external environment.

Further, according to any one of the above-described technical solutions, in case the mounting slot is formed on the mounting panel, the terminal unit can be mounted on the mounting panel in a sliding manner, so that the terminal unit can be easily mounted and prevented from being unintentionally separated.

In addition, according to any one of the above-described technical solutions, in case the connection bar is provided on the mounting panel, the foldable multimedia terminal capable of changing the direction of the terminal unit coupled to the mounting panel can be presented.

Further, according to any one of the above-described technical solutions, in case the foldable keyboard is folded, the second terminal unit is automatically operated by the keyboard folding detection sensor to provide a dual screen together with the first terminal unit, and in case the first terminal is folded on the foldable keyboard, the first terminal unit is automatically turned off by the terminal unit folding detection sensor and the second terminal is automatically operated, so that the terminal units can be automatically operated according to the folding type.

In addition, according to any one of the above-described technical solutions, since the foldable keyboard is configured to be opened and closed by the holder touch cover, the second terminal unit or the third terminal unit can be used by separating it from the foldable keyboard.

Further, the security can be improved by independently separating open type contents and security type contents such that the open type contents can be distinctly executed by an open function unit and the security type contents can be distinctly provided (executed) by a security function unit.

The effects obtained in the disclosed embodiments are not limited to the above-mentioned effects, and other effects that are not mentioned can be clearly comprehended by those skilled in the art in the technical field to which the embodiments pertain.

<FIG> is a perspective view showing an unfolded state of a foldable multimedia terminal according to an embodiment, <FIG> is a perspective view showing a folded state of a foldable keyboard of a foldable multimedia terminal according to an embodiment, <FIG> is a rear view showing a keyboard holder provided on the rear surface of the foldable keyboard, <FIG> is a longitudinal sectional view showing a folded state of the foldable multimedia terminal according to an embodiment, <FIG> is a perspective view showing a folded state of a foldable multimedia terminal according to an embodiment, <FIG> is a perspective view showing a state of use of a foldable multimedia terminal, and <FIG> is a perspective view showing still another embodiment of a foldable keyboard.

The foldable multimedia terminal <NUM> according to a preferred embodiment can provide a keyboard input environment or a dual screen through a plurality of terminals, and may include a foldable keyboard <NUM>, a first terminal unit <NUM>, a second terminal unit <NUM>, and a terminal holder <NUM> as shown in <FIG> and <FIG>.

The foldable keyboard <NUM> is a component that provides an input environment for a user to the first terminal unit <NUM> to be described below.

Specifically, as shown in <FIG>, the foldable keyboard <NUM> may be divided into one-side keyboard <NUM> and the other-side keyboard <NUM> and may be foldably connected by a keyboard hinge 100a.

In addition, the one-side keyboard <NUM> of the foldable keyboard <NUM> may be foldably connected to a terminal holder <NUM> to be described below through a holder hinge 300a. In this case, the keyboard hinge 100a may have any configuration so long as it is configured in a hinge structure or a flexible band structure that allows the one-side keyboard <NUM> and the other-side keyboard <NUM> to be folded, and the folding structure is a component provided therein with a flexible printed circuit board (FPCB) or a cable, which is not shown, capable of transmitting either or both of power and signals.

Accordingly, as shown in <FIG>, the one-side keyboard <NUM> and the other-side keyboard <NUM> of the foldable keyboard <NUM> may be folded, and, as shown in <FIG> and <FIG>, the first terminal unit <NUM> to be described below may be folded together through the terminal holder 300to be described below.

The one-side keyboard <NUM> and the other-side keyboard <NUM> of the foldable keyboard <NUM> may be configured in the same manner as a conventional keyboard.

In addition, the foldable keyboard <NUM> may be equipped with a battery, which is not shown, or connected to an external power source so as to be operated by power, and may supply power to the second terminal unit <NUM> to be described below.

Further, the foldable keyboard <NUM> may be provided with a control module that is not shown and controls the operation of the first terminal unit <NUM> and the second terminal unit <NUM>, which will be described below, while controlling interworking or communication between devices.

The foldable keyboard <NUM> may be operated through a control module, which is not shown, and may be used as a keyboard while being connected to another computer, tablet PC, or smart phone.

Meanwhile, the foldable keyboard <NUM> may be provided with a step130 as shown in <FIG> and <FIG>.

In detail, the step <NUM> is for providing a mounting portion for the other-side keyboard <NUM> on the one-side keyboard <NUM>, and has an 'L'-shaped section on the one-side keyboard <NUM> to accommodate the other-side keyboard <NUM> when the other-side keyboard <NUM> is folded.

That is, as shown in <FIG>, the other-side keyboard <NUM> may be rested on the step <NUM> of the one-side keyboard <NUM> when it is folded so that the one-side keyboard <NUM> can be folded while being prevented from being shaken.

In addition, as shown in <FIG>, since the one-side keyboard <NUM> and the other-side keyboard <NUM> may precisely overlap each other through the step <NUM>, the foldable keyboard <NUM> may have a thickness the same as that of the terminal holder <NUM> to be described below, so that it is possible to allow the terminal holder <NUM>, which will be described below, to be smoothly folded in a state in which the one-side keyboard <NUM> and the other-side keyboard <NUM> are folded.

The first terminal unit <NUM> is a component including a touch display that interworks with the foldable keyboard 100to make an input by the foldable keyboard <NUM> or a touch.

The input to the first terminal unit <NUM> may be realized by the foldable keyboard <NUM> while the first terminal unit <NUM> is operated by the above-described control module, and alternatively, the input by the touch of a user may be realized.

In addition, the first terminal unit <NUM> may provide at least one function of multimedia contents including camera operation, phone calls, Internet communication, and games while being operated by the control module.

Further, the first terminal unit <NUM> may be configured as a normal smartphone or tablet computer and independently portable by the user, and may be configured as a flat display, a foldable display, a rollable display, a covered display, and a deformable display or a stretchable display.

The first terminal unit <NUM> may provide contents through a communication module (open type or security type), which may be separately (dividedly) provided in either or both of the first terminal unit 210and the terminal holder <NUM>, otherwise, may provide the contents through the communication module provided in the above-described control module.

In addition, as shown in <FIG>, the first terminal unit <NUM> may be separably mounted on the foldable keyboard <NUM> while being accommodated through the terminal holder <NUM> to be described below.

In addition, the first terminal unit <NUM> may interwork with the flexible keyboard <NUM> through the control module of the foldable keyboard <NUM> described above to provide an input environment for the foldable keyboard <NUM> and may be connected to the second terminal unit <NUM> to be described below in order to interwork with the second terminal unit <NUM>.

The second terminal unit <NUM> may provide a dual screen together with the first terminal unit <NUM> while interworking with the first terminal unit <NUM> or perform a function of the first terminal unit <NUM> instead of the first terminal unit <NUM>.

As shown in <FIG>, the second terminal unit <NUM> may be separably accommodated in a keyboard holder <NUM> provided on a rear surface of the foldable keyboard <NUM>. The second terminal unit <NUM> may provide the same contents as the first terminal unit <NUM> while interworking with the first terminal unit <NUM>, and, as shown in <FIG>, when the foldable keyboard <NUM> is folded, the second terminal unit <NUM> may be arranged in parallel with the first terminal unit 210a to provide a dual image together r with the first terminal unit <NUM>.

In addition, the second terminal unit <NUM> may provide an input environment to the first terminal unit <NUM> by providing a software keyboard while being connected to the first terminal unit <NUM>.

Further, the second terminal unit <NUM> may be provided therein with a communication module to perform independent calls or Internet communication. In addition, if the configuration of the communication module is omitted, the second terminal unit <NUM> is operated under the control of the control module to provide at least one of multimedia contents including camera operation, calls, Internet communication, and games.

As shown in <FIG>, when the second terminal unit <NUM> is configured to be separated from the keyboard holder <NUM>, which will be described below, the second terminal unit <NUM> may be selectively accommodated in any one of the first holder <NUM> and the second holder <NUM>, or may be accommodated in the terminal holder <NUM> to be described below.

Specifically, the keyboard holder <NUM> is a component provided on a rear surface of at least one of the one-side keyboard <NUM> and the other-side keyboard <NUM> for separably accommodating the second terminal unit <NUM>, and may include a first holder <NUM> and a second holder <NUM>.

The first holder <NUM> may be provided in the form of a groove, a pocket, or a slot on the rear surface of one of the one-side keyboard <NUM> and the other-side keyboard <NUM> to accommodate the second terminal unit <NUM>, and the second holder <NUM> may be provided in the form of a groove, a pocket, or a slot on the rear surface of the remaining one of the one-side keyboard <NUM> and the other-side keyboard <NUM> to accommodate the second terminal unit <NUM>.

That is, the second terminal unit <NUM> may be selectively accommodated in one of the first holder <NUM> and the second holder <NUM>.

When the second terminal unit <NUM> is accommodated in the second holder <NUM>, the second terminal unit <NUM> may be arranged in parallel with the first terminal unit <NUM> as the foldable keyboard <NUM> is folded, thereby providing a dual screen together with the first terminal unit <NUM>.

In addition, when the second terminal unit <NUM> is accommodated in the first holder <NUM>, as shown in <FIG>, the second terminal unit <NUM> is disposed on the rear surface of one-side keyboard <NUM> in a state in which the first terminal unit <NUM> is folded, thereby performing the function of the first terminal unit <NUM> instead of the first terminal unit <NUM>.

Meanwhile, the keyboard holder <NUM> may accommodate the second terminal unit <NUM> in one of the first holder <NUM> and the second holder <NUM>, and peripherals devices such as a memory, a cable or a mouse may be accommodated in the remaining one of the first holder <NUM> and the second holder <NUM>.

In addition, the first holder <NUM> and the second holder <NUM> may be shielded and opened or closed by a holder touch cover, which is not shown, so as to enable a touch to the second terminal unit <NUM>.

As shown in <FIG> and <FIG>, the terminal holder <NUM> is a component that provides an accommodation space where one of the first terminal unit <NUM> and the second terminal unit <NUM> can be separably accommodated.

For example, the terminal holder <NUM> separably accommodates the first terminal unit <NUM> in a state in which the terminal holder <NUM> is foldably connected to the one-side keyboard <NUM> constituting the foldable keyboard <NUM> through a holder hinge 300a, so that the first terminal unit <NUM> can be folded with respect to the foldable keyboard <NUM>. Accordingly, as shown in <FIG> and <FIG>,the first terminal unit <NUM> can be shielded from the outside by being folded to the foldable keyboard <NUM> together with the terminal holder <NUM> so that the first terminal unit <NUM> can be protected from the external environment.

For example, as shown in <FIG> and <FIG>, the terminal holder <NUM> may be configured to include a mounting panel <NUM>.

The mounting panel <NUM> provides a mounting surface for the first terminal unit <NUM> and is formed in a plate shape as shown in the drawing and foldably connected to the one-side keyboard constituting the foldable keyboard <NUM> through the holder hinge 300a, so that a mounting groove <NUM> for mounting the first terminal unit <NUM> can be formed and the first terminal unit <NUM> can be mounted in the mounting groove <NUM>.

It is also possible to mount the second terminal unit <NUM> on the mounting panel <NUM> constituting the terminal holder <NUM>, instead of the first terminal unit <NUM>. Meanwhile, the terminal holder <NUM> may provide a connection portion to be connected to a separate external display DP as shown in <FIG>.

That is, the terminal holder <NUM> may be separably inserted and connected to a connection unit DP1 formed on the external display DP to allow the external display DP, the foldable keyboard <NUM>, and the first terminal unit <NUM> to interwork with each other.

The external display DP is a component configured separately from the open function unit OF or the security function unit SF, and may include a foldable display that is bent beyond a predetermined radius of curvature or foldable about the folding axis, a rollable display that is rolled with a predetermined radius of curvature, a deformable display that is freely deformable, or a stretchable display and may be separately carried by the user. In addition, the external display may be configured as a curved display that is fixed with a predetermined curvature, a flat display, or a display used as a monitor of a PC.

In addition, since the external display DP is configured to have a larger size than the first terminal unit <NUM>, the screen of the first terminal unit <NUM> or the security function unit SF may be provided with an enlarged size.

The external display DP may be connected to at least one of the open function unit OF, the foldable keyboard <NUM>, and the security function unit SF through an external display connection unit (not shown) to be described below in order to provide the contents of the open function unit OF or the security function unit SF, while enabling an input by a touch or a user or an input through the foldable keyboard <NUM>.

The external display connection unit (not shown) is a component that provides a connection portion of the external display DP to at least one of the above-described open function unit OF, foldable keyboard <NUM>, and security function unit SF in order to connect the external display DP to the open function unit OF, the foldable keyboard <NUM>, or the security function unit SF.

A connection portion of the external display DP may be provided on at least one of the terminal holder <NUM> and the foldable keyboard <NUM>, and an external display connection portion(not shown) may be provided, in which the external display connection portion is separably inserted into the connection unit DP1 formed on the external display DP to connect the external display DP to the terminal holder <NUM> or the foldable keyboard <NUM>.

The external display connection portion (not shown) may be configured as a connection unit including a cable such as a USB port for wire connection, and alternatively, the external display <NUM> may be wirelessly connected to other components.

Meanwhile, the holder hinge 300a is a component for adjusting an inclination angle of the terminal holder <NUM> while foldably connecting the mounting panel <NUM> constituting the terminal holder <NUM> to the one-side keyboard <NUM> constituting the foldable keyboard <NUM>.

The holder hinge 300a, for example, may have the same configuration as a tilting hinge device applied to a notebook computer, so that the holder hinge 300a may adjust the inclination angle of the terminal holder <NUM> while allowing the terminal holder <NUM> to be folded or unfolded.

In addition, the holder hinge 300a may have any configuration so long as it can adjust the inclination angle of the mounting panel <NUM> while folding the mounting panel <NUM> and the one-side keyboard <NUM>.

Meanwhile, unlike the drawings, the terminal holder <NUM> may be provided on a lateral side of the foldable keyboard <NUM>, or may be provided in the form of a groove or a pocket on the rear surface of the foldable keyboard <NUM>.

That is, the above-described keyboard holder <NUM> may be an embodiment of the terminal holder <NUM>.

Meanwhile, as shown in <FIG>, the foldable multimedia terminal <NUM> according to the preferred embodiment may further include a keyboard folding detection sensor <NUM>. The keyboard folding detection sensor <NUM> is a component for automatically operating the second terminal unit <NUM> when the foldable keyboard <NUM> is folded.

In addition, as shown in <FIG>, the foldable multimedia terminal <NUM> according to an embodiment may further include a terminal unit folding detection sensor <NUM>.

The terminal unit folding detection sensor <NUM> is a component for automatically operating the second terminal unit <NUM> when the first terminal unit <NUM> is folded on the foldable keyboard <NUM>.

Such a terminal unit folding detection sensor <NUM> may be provided in the above-described holder hinge 300a.

Meanwhile, as shown in <FIG>, the foldable keyboard <NUM> may have a keyboard formed only on a part of the one-side keyboard <NUM>, and a storage unit <NUM> for providing a storage space may be provided in the rest of the one-side keyboard <NUM>. In this case, the other-side keyboard <NUM> may be configured to have a length corresponding to the keyboard of the one-side keyboard <NUM>, and may be unfolded toward the storage unit <NUM> while rotating about the keyboard hinge 100a.

The storage unit <NUM> is configured to accommodate the second terminal unit <NUM> or peripheral devices, and may include a storage case <NUM> and a storage box <NUM> as shown in <FIG>.

A method of operating the foldable multimedia terminal <NUM> according to a preferred embodiment including the above components will be described.

After mounting the first terminal unit <NUM> on the mounting panel <NUM>, the user can perform the input through the foldable keyboard <NUM> while maintaining the mounting panel <NUM> at a predetermined angle in order to use the contents of the terminal unit <NUM>.

When implementing the dual screen, the user folds the other-side keyboard <NUM> to the one-side keyboard <NUM>.

At this point, the second terminal unit <NUM> may be accommodated in the second holder <NUM> provided on the other-side keyboard <NUM>, and the keyboard folding detection sensor <NUM> may automatically operate the second terminal unit <NUM> by detecting the other-side keyboard <NUM> that is folded to the one-side keyboard <NUM>. Accordingly, the user can use the contents through the dual screen provided by the first terminal unit <NUM> and the second terminal unit <NUM>.

When the use of the first terminal unit <NUM> is terminated, the user folds the first terminal unit <NUM> onto the foldable keyboard <NUM>.

At this point, the second terminal unit <NUM> may be accommodated in the first holder <NUM> provided on the one-side keyboard <NUM>, and the terminal unit folding detection sensor <NUM> may automatically operate the screen of the second terminal unit <NUM> while turning off the screen of the first terminal unit <NUM> by detecting the first terminal unit <NUM> being folded.

As described above, the user can use the foldable multimedia terminal <NUM> according to the preferred embodiment by easily mounting the first terminal unit <NUM> on the terminal holder <NUM>, and the input environment can be provided through the foldable keyboard <NUM> or various contents can be provided through the second terminal unit <NUM>.

Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below may be modified and implemented in various different forms. In order to more clearly describe the features of the embodiments, detailed descriptions of configurations widely known to those skilled in the art to which the following embodiments pertain will be omitted. In addition, parts not related to the description of the embodiments are omitted in the drawings, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a configuration is referred to be "connected" with another configuration, this may include not only the case where it is' directly connected', but also the case where it is' connected with another configuration interposed there between'. In addition, when a certain configuration "includes" another configuration, this means that other configurations may be further included rather than excluded unless otherwise specified.

<FIG> is a perspective view showing an unfolded state of a foldable multimedia terminal according to an embodiment, <FIG> is a perspective view showing a folded state of a foldable keyboard of a foldable multimedia terminal according to an embodiment, <FIG> is a perspective view showing another embodiment of a terminal holder, <FIG> is a perspective view showing still another embodiment of a terminal holder, <FIG> is a longitudinal sectional view showing a touch cover provided in a terminal holder, <FIG> is a rear view showing a keyboard holder provided on the rear surface of the foldable keyboard, <FIG> is a longitudinal sectional view showing a folded state of the foldable multimedia terminal according to an embodiment, <FIG> is a perspective view showing a folded state of a foldable multimedia terminal according to an embodiment, <FIG> is a perspective view showing a foldable multimedia terminal according to another embodiment, <FIG> is a perspective view showing a state of use of a foldable multimedia terminal, <FIG> and <FIG> are perspective views showing another embodiment of a mounting panel, <FIG> is a perspective view showing another embodiment of a foldable keyboard, and <FIG> is a perspective view showing still another embodiment of a foldable keyboard.

The foldable multimedia terminal <NUM> according to one embodiment can provide a keyboard input environment or a dual screen through a plurality of terminals, and may include a foldable keyboard <NUM>, a first terminal unit <NUM>, a second terminal unit <NUM>, and a terminal holder <NUM> as shown in <FIG> and <FIG>.

Further, the foldable keyboard <NUM> may be provided with a control module which is not shown and controls the operation of the first terminal unit <NUM> and the second terminal unit <NUM>, which will be described below, while controlling interworking or communication between devices.

In addition, as shown in <FIG>, at least one of the one-side keyboard and the other-side keyboard of the foldable keyboard <NUM> may be dividedly formed to be foldable in multiple stages.

Accordingly, the one-side keyboard <NUM> and the other-side keyboard <NUM> of the foldable keyboard <NUM> may be folded in multiple stages while being folded about the keyboard hinge 100a.

The first terminal unit <NUM> is a component including a touch display that interworks with the foldable keyboard <NUM> to make an input by the foldable keyboard <NUM> or a touch.

Meanwhile, as shown in <FIG>, the first terminal unit <NUM> may be integrally formed with the terminal holder <NUM> to be described below.

Specifically, the second terminal unit <NUM> is configured as a touch display and may interwork with the first terminal unit <NUM> by the above-described control module as the input is performed by the touch of user, and as shown in <FIG>, the second terminal unit <NUM> may be integrally formed on the rear surface of at least one of the one-side keyboard <NUM> and the other-side keyboard <NUM> constituting the foldable keyboard <NUM>. Alternatively, as shown in <FIG>, the second terminal unit <NUM> may be separably accommodated in the keyboard holder <NUM> provided on the rear surface of the foldable keyboard <NUM>.

The second terminal unit <NUM> may provide the same contents as the first terminal unit <NUM> while interworking with the first terminal unit <NUM>, and, as shown in <FIG>, when the foldable keyboard <NUM> is folded, the second terminal unit <NUM> may be arranged in parallel with the first terminal unit 210a to provide a dual image together r with the first terminal unit <NUM>.

In addition, the second terminal unit <NUM> may be used as a monitor while being connected to another device such as another computer.

Specifically, the holder touch cover may be formed of transparent and conductive tempered glass similar to the configuration of the touch cover <NUM> to be described below, and coupled to the rear surfaces of the one-side keyboard <NUM> and the other-side keyboard <NUM> so as to be opened or closed, thereby shielding the first holder <NUM> and the second holder <NUM>.

Such a holder touch cover may be configured to be opened or closed by means of the above-described keyboard hinge 100a.

That is, one end of the holder touch cover may be connected to the keyboard hinge 100a, and the other end may rotate about the keyboard hinge 100a to open or close the first holder <NUM> and the second holder <NUM>.

Alternatively, the holder touch cover may be configured to be completely separated from the one-side keyboard <NUM> and the other-side keyboard <NUM>.

The holder touch cover, the first holder <NUM>, and the second holder <NUM> may be provided with a locking member such as a magnet or a coupling protrusion so that they can be locked in a closed state.

Accordingly, the second terminal unit <NUM> may be coupled to the rear surface of the foldable keyboard <NUM> by the keyboard touch cover, and may be separated from the foldable keyboard <NUM> for use if necessary.

If the second terminal unit <NUM> is configured to be separated from the rear surface of the foldable keyboard <NUM>, the second terminal unit <NUM>, instead of the first terminal unit <NUM>, can be selectively mounted on the terminal holder <NUM> to be described below. As shown in <FIG>, the terminal holder <NUM> is a component that provides an accommodation space where one of the first terminal unit <NUM> and the second terminal unit <NUM> can be separably accommodated, or as shown in <FIG>, accommodates the first terminal unit <NUM> integrally.

For example, the terminal holder <NUM> separably or integrally accommodates the first terminal unit <NUM> in a state in which the terminal holder <NUM> is foldably connected to the one-side keyboard <NUM> constituting the foldable keyboard <NUM> through the holder hinge 300a, so that the first terminal unit <NUM> can be folded with respect to the foldable keyboard <NUM>.

Accordingly, as shown in <FIG> and <FIG>, the first terminal unit <NUM> can be shielded from the outside by being folded to the foldable keyboard <NUM> together with the terminal holder <NUM> so that the first terminal unit <NUM> can be protected from the external environment.

The mounting panel <NUM> may be provided on a rear surface thereof with a support, which is not shown, so that the mounting panel <NUM> can adjust the inclination angle of the first terminal unit <NUM> while supporting the ground at a preset angle.

Meanwhile, as shown in <FIG>, the mounting panel <NUM> may be coupled with the touch cover <NUM> to shield the first terminal unit <NUM> such that the first terminal unit <NUM> can be touched.

The touch cover <NUM> may be formed of transparent and conductive tempered glass, and separably coupled to the mounting panel <NUM> to shield the first terminal unit <NUM> mounted on the mounting panel <NUM> such that the first terminal unit <NUM> can be touched.

Accordingly, the first terminal unit <NUM> may be protected from an external environment by the touch cover <NUM>.

As shown in <FIG>, the touch cover <NUM> may be fixed to the mounting panel <NUM> by a fixing member <NUM> such as magnets provided on the mounting panel <NUM> and the touch cover <NUM>, respectively, and may shield the first terminal unit <NUM> such that the first terminal unit <NUM> can be touched.

It is also possible to mount the second terminal unit <NUM> on the mounting panel <NUM> constituting the terminal holder <NUM>, instead of the first terminal unit <NUM>. Meanwhile, the terminal holder <NUM> may further include a mounting slot <NUM> and a slot cover <NUM> as shown in <FIG>.

The mounting slot <NUM> may be formed in a part of the mounting groove <NUM> while being opened to accommodate the first terminal unit <NUM> or the second terminal unit <NUM> in a slide manner.

That is, the first terminal unit <NUM> or the second terminal unit <NUM> may be accommodated in the mounting panel <NUM> while sliding in the longitudinal direction of the mounting slot <NUM>.

The slot cover <NUM> may be provided on the mounting panel <NUM> to shield the mounting slot <NUM> such that the mounting slot <NUM> can be opened or closed.

The slot cover <NUM> may open and close the mounting slot <NUM> while rotating by a hinge, and alternatively, the slot cover <NUM> may be configured in a slide type to open or close the mounting slot <NUM>.

Meanwhile, the terminal holder <NUM> may be configured to include the mounting panel <NUM> and a connection bar <NUM> as shown in <FIG>.

As described above, the mounting panel <NUM> may be provided with the mounting groove <NUM>, and may be configured without the mounting groove <NUM>.

The connection bar <NUM> is a component that may be coupled to the first terminal unit <NUM> or the second terminal unit <NUM> and allow the rotation of the terminal units <NUM> and <NUM> to convert the direction the terminal units <NUM> and <NUM> coupled thereto.

Specifically, as shown in <FIG>,the connection bar <NUM> may be formed in a bar shape having a predetermined length so that one end thereof is rotatably coupled to both sides of the mounting panel <NUM>, and the first terminal unit <NUM> or the second terminal unit <NUM> is rotatably coupled to the other end thereof.

The connection bar <NUM> may come in close contact with the mounting panel <NUM> as the other end pivots about the one end, so that the first terminal unit <NUM> may be mounted on the mounting panel <NUM>.

In addition, the connection bar <NUM> rotates the first terminal unit <NUM> or the second terminal unit <NUM> by standing up to a vertical state with the mounting panel <NUM> while the other end pivotally rotates around one end.

In addition, an angle adjusting unit (not shown), which adjusts the angle with respect to the mounting panel <NUM> in multiple stages to maintains a predetermined angle, may be provided on a connection portion between the connection bar <NUM> and the mounting panel <NUM> in order to adjust the inclination angle of the first terminal unit <NUM> or the second terminal unit <NUM>.

Meanwhile, the terminal holder <NUM> may provide a connection portion for connecting to a separate external display DP as shown in <FIG>. Meanwhile, the terminal holder <NUM> may provide a connection portion to be connected to a separate external display DP as shown in <FIG>.

Meanwhile, as shown in <FIG>, the foldable multimedia terminal <NUM> according to the preferred embodiment may further include a keyboard folding detection sensor <NUM>. The keyboard folding detection sensor <NUM> is a component for automatically operating the second terminal unit <NUM> when the foldable keyboard <NUM> is folded. Specifically, the keyboard folding detection sensor <NUM> may be configured as a photosensor or an infrared sensor provided on the other-side keyboard <NUM> to detect the other-side keyboard <NUM> folded onto the one-side keyboard <NUM>, and may automatically operate the second terminal unit <NUM> when the other-side keyboard <NUM> is folded onto the one-side keyboard <NUM>.

That is, the keyboard folding detection sensor <NUM> automatically operates the second terminal unit <NUM> when the second terminal unit <NUM> is arranged in parallel with the first terminal unit <NUM> to automatically implement the dual screen.

The keyboard folding detection sensor <NUM> may be provided in the above-described keyboard hinge 100a.

The terminal unit folding detection sensor <NUM> is a component for automatically operating the second terminal <NUM> when the first terminal <NUM> is folded on the foldable keyboard <NUM>.

Specifically, the terminal unit folding detection sensor <NUM> may be configured as a photosensor or an infrared sensor provided on the first terminal unit <NUM> or the terminal holder <NUM> to detect the first terminal unit <NUM> folded onto the foldable keyboard <NUM> together with the terminal holder <NUM>, and may automatically operate the second terminal unit 220while turning off the first terminal unit <NUM> when the first terminal unit <NUM> is folded onto the foldable keyboard <NUM>.

That is, when the first terminal unit <NUM> is folded, the terminal unit folding detection sensor <NUM> automatically turns off the screen of the first terminal unit <NUM> and automatically operates the screen of the second terminal unit <NUM>, so that the second terminal unit <NUM> accommodated in the first holder <NUM> may perform the function of the first terminal unit <NUM> instead of the first terminal unit <NUM>.

Meanwhile, as shown in <FIG> and <FIG>, the above-described mounting panel <NUM> may have a viewing window <NUM> formed through the mounting panel <NUM>.

The viewing window <NUM> allows the first terminal unit <NUM> mounted on the mounting panel <NUM> to be viewed from the opposite side, and the viewing window <NUM> is a hole having a size corresponding to the touch display of the first terminal unit <NUM> and is formed through the mounting panel <NUM>.

Accordingly, even when the first terminal unit <NUM> is mounted in a reversed state on the mounting panel <NUM>, the touch display may be exposed through the viewing window <NUM>, so that the first terminal unit <NUM> may be operated through the rear surface of the mounting panel <NUM>.

In this case, the second terminal unit <NUM> may be accommodated in the first holder <NUM> of the keyboard holder <NUM> to provide a dual screen together with the first terminal unit <NUM>.

Meanwhile, as shown in <FIG>, the foldable keyboard <NUM> may be configured to be folded or unfolded as the other-side keyboard <NUM> is divided.

For example, the other-side keyboard <NUM> may be divided into two portions that are foldably coupled to each other by a hinge, which is not shown, and may be folded or unfolded while rotating about the hinge.

The length of the other-side keyboard <NUM> may be longer than the length of the one-side keyboard <NUM> in the unfolded state. In this case, the other-side keyboard <NUM> may be provided with additional function keys.

In addition, when the other-side keyboard <NUM> has the length longer than the length of the one-side keyboard <NUM> and overlaps the one-side keyboard <NUM>, a problem may occur due to a part of the other-side keyboard <NUM> protruding out of the one-side keyboard <NUM>.

In order to prevent the above problems, the one-side keyboard <NUM> may be provided at the end thereof with an expansion plate <NUM> that is foldably installed by a hinge to extend the length.

As shown in <FIG>, the expansion plate <NUM> can extend the length of one-side keyboard <NUM> while being unfolded to the side of the one-side keyboard <NUM>, and may support a portion of the other-side keyboard <NUM> when the other-side keyboard <NUM> is unfolded to the top surface of the one-side keyboard <NUM>.

In addition, when the other-side keyboard <NUM> is folded, the expansion plate <NUM> may be folded while rotating to the top surface of the one-side keyboard <NUM>.

Meanwhile, the foldable keyboard <NUM> may further include a storage case <NUM> as shown in <FIG>.

The storage case <NUM> is a component that separably accommodates the second terminal unit <NUM> or peripheral devices, and is inserted into a fitting groove 130a formed in the step <NUM> of the one-side keyboard <NUM> and disposed between the other-side keyboard <NUM> and the expansion plate <NUM>.

One side of the storage case <NUM> is shielded as the expansion plate <NUM> described above is folded in a state in which the storage case <NUM> is inserted into the fitting groove 130a, so that it can be prevented from being unintentionally shaken. Meanwhile, as shown in <FIG>, the foldable keyboard <NUM> may have a keyboard formed only on a part of the one-side keyboard <NUM>, and a storage unit <NUM> for providing a storage space may be provided in the rest of the one-side keyboard <NUM>. In this case, the other-side keyboard <NUM> may be configured to have a length corresponding to the keyboard of the one-side keyboard <NUM>, and may be unfolded toward the storage unit <NUM> while rotating about the keyboard hinge 100a.

The storage unit <NUM> is configured to accommodate the second terminal <NUM> or peripheral devices, and may include a storage case <NUM> and a storage box <NUM> as shown in <FIG>.

As described above, the storage case <NUM> may be fitted into the fitting groove 130a formed in the step <NUM> of the one-side keyboard <NUM>.

The storage case <NUM> may be formed with guide grooves 180a in the longitudinal direction so that the storage case <NUM> may be fitted into the fitting groove 130a while sliding along the keyboard hinge 100a.

The storage box <NUM> is a component that forms a housing and is integrally formed with the one-side keyboard <NUM> to provide the storage space, and may be formed adjacent to the storage case <NUM> while being opened or closed by a lid 192a.

As shown in <FIG>, the lid 192a may support the other-side keyboard <NUM> together with the storage box <NUM> since the lid 192a is deployed while opening the storage box <NUM>.

At this point, the second terminal <NUM> may be accommodated in the second holder <NUM> provided on the other-side keyboard <NUM>, and the keyboard folding detection sensor <NUM> may automatically operate the second terminal unit <NUM> by detecting the other-side keyboard <NUM> that is folded to the one-side keyboard <NUM>.

Accordingly, the user can use the contents through the dual screen provided by the first terminal unit <NUM> and the second terminal unit <NUM>.

At this point, the second terminal unit <NUM> may be accommodated in the first holder <NUM> provided on the one-side keyboard <NUM>, and the terminal unit folding detection sensor <NUM> may automatically operate the screen of the second terminal <NUM> while turning off the screen of the first terminal unit <NUM> by detecting the first terminal <NUM> being folded.

An open communication module which can perform wireless communication through a communication module including at least one of Zigbee, Low Energy Bluetooth (BLE), Bluetooth, Wi-Fi, <NUM> (3rd Generation), 3GPP (3rd Generation Partnership Project), LTE (Long Term Evolution), LTE-A, <NUM> (4th Generation), and <NUM>(5th Generation) and can be configured to execute only the open type contents while filtering transmitted/received data may be separately (dividedly) provided on either or both of the first terminal unit <NUM> and the terminal holder <NUM>, and the open function unit OF may be configured to include the first terminal unit <NUM> and the terminal holder <NUM>. In addition, since the open communication module is installed, only the open type contents can be provided through a touch display of one of the first terminal unit <NUM> and the second terminal unit <NUM> or an external display (DP).

Such an open communication module can be implemented as a hardware circuit together with the above-described wireless communication module to filter the open type contents. Alternatively, it can be implemented as a software program and only the open type contents including at least one of contents, such as games, Internet surfing, dynamic picture playback and music playback, which do not require a high level of security, can be executed.

The open type contents may include any contents provided by a web browser during the Internet surfing process.

For example, the payment window for e-commerce or the approval window for mobile banking provided during the Internet surfing process may be included in the open type contents, and the user authentication for e-commerce payment or the user authentication for mobile banking approval may be included in the security type content.

In addition, a security communication module which can perform the wireless communication through a communication module including at least one of Zigbee, Low Energy Bluetooth (BLE), Bluetooth, Wi-Fi, <NUM> (3rd Generation), 3GPP (3rd Generation Partnership Project), LTE(Long Term Evolution), LTE-A, <NUM>(4th Generation), and <NUM>(5th Generation), or can be configured to execute only the security type contents while filtering transmitted/received data may be separately (dividedly) provided on either or both of the rear surface of the foldable keyboard <NUM> and the terminal holder <NUM>, in which some channels of a specific bandwidth among all communication channels configured in the above-described open communication module may be connected to the security communication module (hardware circuit) using a wired cable as a connection medium, and may be allocated as a dedicated security communication channel. In addition, the security function unit (SF) may be provided on the rear surface of the foldable keyboard or the rear surface of the first terminal unit <NUM> constituting the open function unit (OF) and it is possible to provide only the security type contents by installing the security communication module.

Such a security communication module can be implemented as a hardware circuit together with the above-described wireless communication module to filter the security type contents. Alternatively, it can be implemented as a software program, and only the security type contents including at least one of contents, such voice call, video call, mobile messenger and user authentication for e-commerce and mobile banking, which require a relatively high level of security, can be executed.

In addition, an interworking control unit, which is a component for interworking the open communication module of the open function unit (OF) with the security communication module of the security function unit (SF) described above by means of the holder hinge 300a and the keyboard hinge 100a, may be included.

Specifically, the interworking control unit may be implemented as a hardware circuit or software program provided in the open function unit (OF) or the security function unit (SF). When a security type content is requested to the open function unit (OF) during the execution of the open type contents, the requested security type contents can be approved by executing the requested security type contents in the security function unit (SF).

For example, when a user authentication for electronic payment or a user authentication for mobile banking is requested during the Internet surfing process by the open function unit (OF), the interworking control unit authenticates and approves the request by executing the request in the security function unit (SF).

The above-described embodiments are for illustrative purposes only, and it can be understood that those skilled in the art to which the above-described embodiments pertain can easily modify the embodiments into other specific forms without changing the technical idea or essential features of the above-described embodiments. Therefore, it should be understood that the above-described embodiments are illustrative and non-limiting in all respects. For example, each component described as an integral type may be implemented as a discrete type, and similarly, components described as a discrete type may also be implemented as an integral type.

Claim 1:
A foldable multimedia terminal comprising:
a foldable keyboard (<NUM>) having one-side keyboard (<NUM>) and an other-side keyboard (<NUM>) foldably connected to the one-side keyboard and the foldable keyboard (<NUM>) being configured to perform an input by a user;
a first terminal unit (<NUM>) including a touch display configured to allow an input to be carried out by means of the foldable keyboard or by means of touch, while being configured to interwork-with the foldable keyboard, and which is configured to perform at least one from among calling, Internet communication, and multimedia content functions;
a second terminal unit (<NUM>) which is provided so as to be integrated with or separated from a rear surface of either one of the one-side keyboard and the other-side keyboard constituting the foldable keyboard (<NUM>), and which provides a dual screen together with the first terminal unit (<NUM>) when integrated with the rear surface of the other-side keyboard or takes over a function of the first terminal unit (<NUM>) while interworking with the first terminal unit (<NUM>) when integrated with the rear surface of the one-side keyboard;
a terminal holder (<NUM>) which is either provided on the foldable keyboard (<NUM>) so as to accommodate the first terminal unit (<NUM>) or which accommodates one of the first terminal unit (<NUM>) and the second terminal unit (<NUM>) when the second terminal unit (<NUM>) is separated from the foldable keyboard (<NUM>), or which is foldably provided on the foldable keyboard (<NUM>) and integrally formed with the first terminal unit (<NUM>) such that the terminal holder (<NUM>) is unfolded or folded on the foldable keyboard (<NUM>) together with the first terminal unit (<NUM>); and
a keyboard holder (<NUM>, <NUM>, <NUM>) provided on the rear surface of both the one-side keyboard (<NUM>) and the other-side keyboard (<NUM>) constituting the foldable keyboard (<NUM>) to separably accommodate the second terminal unit (<NUM>).