Swiveling indicator for a display

Disclosed is a display apparatus including: a display configured to be swiveled; a stand configured to support the display; a driver configured to swivel the display with respect to the stand; a swiveling indicator provided within a predetermined swiveling range of the display and shaped to show a swiveling indication value corresponding to a swiveled angle of the display; a sensor configured to sense the swiveling indication value of the swiveling indicator corresponding to the swiveled angle of the display; and a controller configured to determine the swiveled angle of the display based on the swiveling indication value sensed by the sensor and to provide at least one function supported by the display apparatus in accordance with the determined swiveled angle.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority from Korean Patent Application No. 10-2015-0128195, filed on Sep. 10, 2015 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND

Field

Apparatuses and methods consistent with exemplary embodiments relate to a swiveling indicator having a shape to correspond to a swiveled angle of a display and a display apparatus including the same, and more particularly to a swiveling indicator shaped to show a swiveling indication value corresponding to a swiveled angle of a display of a display apparatus, which can be swiveled left and right, and the display apparatus including the same.

Description of the Related Art

A liquid crystal display (LCD), a plasma display panel (PDP), a light emitting diode (LED) and the like display apparatus have been widespread as the display apparatuses become larger and thinner. The reason is because each of such display apparatuses not only displays an image with high quality but also occupies a small space in a room. For example, the display apparatuses may be directly mounted to a wall in the room, or may be installed on a floor in a room or on a table by a separate stand.

However, it is inconvenient for a user to personally swivel or turn the display apparatus whenever his/her screen view position or direction is changed.

SUMMARY

In accordance with an exemplary embodiment, there is provided a display apparatus including: a display; a stand configured to support the display to be swiveled; a driver configured to swivel the display with respect to the stand; a swiveling indicator configured to be arranged within a predetermined swiveling range of the display and have a shape showing a swiveling indication value corresponding to a swiveled angle of the display; a sensor configured to sense the swiveling indication value of the swiveling indicator corresponding to the swiveled angle of the display; and a controller configured to determine the swiveled angle of the display based on the swiveling indication value sensed by the sensor and to provide at least one function supported by the display apparatus in accordance with the determined swiveled angle. Thus, it is easy to determine the swiveled angle of the display.

The swiveling indicator may include a slope indicating surface, height of which increases or decreases within the predetermined swiveling range of the display, and the sensor may sense the increase/decrease in height of the slope indicating surface. Thus, it is easy to determine the swiveled angle of the display corresponding to the slope indicating surface.

The swiveling indicator may include a pitch indicating surface, pitches of which increase or decrease within the predetermined swiveling range of the display, and the sensor may sense the increase/decrease in pitch of the pitch indicating surface. Thus, it is easy to determine the swiveled angle of the display corresponding to the pitch indicating surface.

The swiveling indicator may include a color indicating surface, color tone of which increases or decreases within the predetermined swiveling range of the display, and the sensor may sense the increase/decrease in color tone of the color indicating surface. Thus, it is easy to determine the swiveled angle of the display corresponding to the color indicating surface.

The display apparatus may further include an input unit configured to receive a user's input for adjusting the swiveled angle of the display, and the controller may control the driver to swivel the display in accordance with the swiveled angle of the display corresponding to a user's input received in the input unit. Thus, it is easy to adjust the swiveled angle of the display.

The display may display a user interface for allowing a user to adjust the swiveled angle of the display. Thus, it is easy to adjust the swiveled angle of the display.

The display apparatus may further include a storage configured to store the swiveled angle of the display of when the display apparatus is turned off, and the controller may control the driver to swivel the display to a preset off position when the display apparatus is turned off, and to swivel the display at the stored swiveled angle when the display apparatus is turned on. Thus, a user does not have to adjust the swiveled angle of the display whenever the power is on/off.

In accordance with another exemplary embodiment, there is provided a method of controlling a display apparatus including a display and a stand, the method including: sensing a swiveling indication value of a shape corresponding to a swiveled angle of the display to be swiveled within a predetermined swiveling range with respect to the stand; determining the swiveled angle of the display based on the sensed swiveling indication value; and providing at least one function supported by the display apparatus in accordance with the determined swiveled angle. Thus, it is easy to determine the swiveled angle of the display.

The shape may include a slope indicating surface, height of which increases or decreases within the predetermined swiveling range of the display, and the sensing the swiveling indication value may include sensing the increase/decrease in height of the slope indicating surface. Thus, it is easy to determine the swiveled angle of the display corresponding to the slope indicating surface.

The shape may include a pitch indicating surface, pitches of which increase or decrease within the predetermined swiveling range of the display, and the sensing the swiveling indication value may include sensing the increase/decrease in pitch of the pitch indicating surface. Thus, it is easy to determine the swiveled angle of the display corresponding to the pitch indicating surface.

The shape may include a color indicating surface, color tone of which increases or decreases within the predetermined swiveling range of the display, and the sensing the swiveling indication value may include sensing the increase/decrease in color tone of the color indicating surface. Thus, it is easy to determine the swiveled angle of the display corresponding to the color indicating surface.

The method may further include receiving a user's input for adjusting the swiveled angle of the display, and the providing the at least one function may include swiveling the display in accordance with the swiveled angle of the display corresponding to the received user's input. Thus, it is easy to adjust the swiveled angle of the display.

The method may further include displaying a user interface for allowing a user to adjust the swiveled angle of the display. Thus, it is easy to adjust the swiveled angle of the display.

The method may further include storing the swiveled angle of the display of when the display apparatus is turned off, and the providing the at least one function may include swiveling the display to a preset off position when the display apparatus is turned off, and swiveling the display at the stored swiveled angle when the display apparatus is turned on. Thus, a user does not have to adjust the swiveled.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Below, exemplary embodiments will be described with reference to accompanying drawings. The following embodiments have to be considered as illustrative only, and it should be construed that all suitable modification, equivalents and/or alternatives fall within the scope of the inventive concept. Throughout the drawings, like numerals refer to like elements.

In this specification, “have,” “may have,” “include,” “may include” or the like expression refer to presence of the corresponding features (e.g.: numerical values, functions, operations, or elements of parts, and does not exclude additional features.

In this specification, “A or B,” “at least one of A or/and B,” “one or more of A or/and B” or the like expression may involve any possible combination of listed elements. For example, “A or B,” “at least one of A and B,” or “at least one A or B” may refer all of (1) at least one A, (2) at least one B, or (3) both at least one A and at least one B.

In this specification, “a first,” “a second,” “the first,” “the second” or the like expression may modify various elements regardless of order and/or importance, and does not limit the elements. These expressions may be used to distinguish one element from another element.

In this specification, the expression of “configured to” may be for example replaced by “suitable for,” “having the capacity to,” “designed to,” “adapted to,” “made to,” or “capable of” in accordance with circumstances. The expression of “configured to” may not necessarily refer to only “specifically designed to” in terms of hardware. Instead, the “device configured to” may refer to “capable of” together with other devices or parts in a certain circumstance. For example, the phrase of “the processor configured to perform A, B, and C” may refer to a dedicated processor (e.g. an embedded processor) for performing the corresponding operations, or a generic-purpose processor (e.g. a central processing unit (CPU) or an application processor) for performing the corresponding operations by executing one or more software programs stored in a memory device.

In this specification, terms may be used just for explaining a certain embodiment and not intended to limit the scope of other embodiments. A singular expression may involve a plural expression as long as it does not clearly give different meaning contextually. All the terms set forth herein, including technical or scientific terms, have the same meanings as those generally understood by a person having an ordinary skill in the art. Terms defined in a general-purpose dictionary may be construed to have the same or similar meanings as the contextual meanings of the related art, and should not be interpreted as ideally or excessively formal meanings.

FIG. 1andFIG. 2are a perspective view and a top view, respectively, of a display apparatus10according to an exemplary embodiment.

Referring toFIG. 1, a display apparatus10may include a display100, a stand200for supporting the display100to be swiveled, and a driver300for swiveling the display100with respect to the stand200.

Therefore, the display100is swiveled left and right with respect to the stand200. For example, the display100may swivel within an angle range from about −45 to +45 degrees. The angle range within which the display100can be swiveled may be variously set taking a user's convenience into account. Because the breadth (or left and right width) of the display100is relatively longer than the stand200, the display100may be shaken when it is swiveled. In other words, the display100may move left and right. The size and weight of the stand200may be suitable for preventing the shaking or moving. To this end, a separate weight may be used to secure the proper weight of the stand200. For example, a metallic frame (e.g. an aluminum bar, not shown) may be added to the stand200, thereby achieving the necessary weight.

Further, the stand200may have a regular hexahedral shape to stably support the display100. Besides, the stand200may have various shapes for stably supporting the display100. That is, the stand200in the exemplary embodiment has a quadrangular cross-section in a horizontal direction, but the exemplary embodiment is not limited thereto. Alternatively, the stand may have triangular, pentagonal or the like polygonal cross-section or a circular or elliptical cross-section in the horizontal direction as long as it can stably support the display100. Further, the height of the stand200may be properly determined so that the display100cannot be shaken when the display100is swiveled left and right.

The driver300may be placed inside the stand200so that the display100can be swiveled with respect to the stand200. The driver300may include a motor that can rotate forward and backward in order to swivel the display100left and right.

Referring toFIG. 2, for example, when the display100faces frontward, a swiveled angle of the display100is 0 degrees. Then, the display100may have a swiveled angle of −A degrees in a clockwise direction D110 and a swiveled angle of +A degrees in a counterclockwise direction D120. For example, the display100may be swiveled up to −45 degrees in the clockwise direction D110 and up to +45 degrees in the counterclockwise direction D120. As necessary, the display100may swivel within various angle ranges.

FIG. 3is a block diagram of a display apparatus10according to an exemplary embodiment.

In the exemplary embodiment, the display apparatus10may be achieved by a television (TV), but not the exemplary embodiment is limited thereto. Alternatively, the display apparatus10according to an exemplary embodiment may be achieved by various apparatuses such as a monitor, a portable multimedia player, a mobile phone, etc. as long as it can display an image based on an image signal/image data received from the exterior or stored therein.

According to an exemplary embodiment, the display apparatus10includes the display100, a driver110for swiveling the display100with respect to the stand200, a swiveling indicator120arranged along a predetermine swiveling range of the display100and shaped to show a swiveling indication value corresponding to a swiveled angle of the display100, a sensor130for sensing a swiveling indication value of the swiveling indicator120, and a controller140for determining the swiveled angle of the display100based on the swiveling indication value sensed by the sensor130and controlling at least one function supported in the display apparatus10in accordance with the determined swiveled angle.

The display100of the display apparatus10is driven by the driver110to swivel within a predetermined swiveling range. At this time, the display apparatus10may determine the swiveled angle of the display100through the swiveling indicator having a shape showing the swiveling indication value corresponding to the swiveled angle of the display100.

That is, the swiveling indicator120shaped to show a swiveling indication value corresponding to a swiveled angle of the display100within a predetermined swiveling range of the display100and the sensor130for sensing the swiveling indication value of the swiveling indicator120are provided to thereby sense the swiveling indication value as the display100swivels.

The sensed indication value is transmitted to the controller140, and the controller140determines the swiveled angle of the display100based on the received swiveling indication value. The sensed swiveling indication value may be tabulated mapping to the swiveled angle of the display100, and thus the controller140determines the swiveled angle of the display100corresponding to the receive swiveling indication value. Thus, the controller140provides at least one support function in accordance with the determined swiveled angles.

At least one function provided by the display apparatus10in accordance with the determined swiveled angles may include a function of providing content corresponding to the determined swiveled angle. In general, a plurality of users are different in direction of viewing the display100, and thus the display apparatus10may provide content or a content history based on a user's preference to him/her corresponding to the determined swiveled angle. In addition, the display apparatus10may display the determined swiveled angle on the display100, or provide a resolution of the display100suitable for the determined swiveled angle.

Further, the controller140of the display apparatus10may display a user interface (UI) on the display100so as to determine the swiveled angle of the display100in response to a user's input, and s/he may control the UI through an input unit150.

Further, the controller140of the display apparatus10may store the swiveled angle of the display100in a storage160. For example, if a user turns off the display apparatus10, the controller140stores the swiveled angle of the display100of when the display apparatus10is turned off and swivel the display100to a preset off position. Thereafter, if a user turns on the display apparatus10, the controller140swivels the display100to the swiveled angle, which is stored when the display apparatus10is turned off.

FIG. 4is a block diagram of a display100in the display apparatus10according to an exemplary embodiment.

Referring toFIG. 4, the display100includes a signal receiver101to receive an image signal/image data and transmit it to the signal processor102. The signal receiver101may be variously achieved in accordance with formats of an image signal to be received and the types of the display apparatus10. For example, the signal receiver101may receive a radio frequency (RF) signal from a broadcasting station (not shown) wirelessly, or may receive an image signal complying with composite video, component video, super video, syndicat des constructeurs d'Appareils radiorécepteurs et téléviseurs (SCART), high definition multimedia interface (HDMI), displayport, unified display interface (UDI). If the image signal is a broadcast signal, the signal receiver101may include a tuner to be tuned to a channel. Further, the signal receiver101may receive an image data packet from a server (not shown) through a network.

The signal processor102performs various image processing processes with respect to an image signal received in the signal receiver101. The signal processor102outputs the image signal processed by such a process to a display panel103, so that the display panel103can display an image based on the image signal.

There are no limits to the kind of image processing processes to be performed by the signal processor102. For example, there are decoding corresponding to an image format of the image data, de-interlacing for converting interlaced-type image data into progressive-type image data, scaling for adjusting the image data to have a preset resolution, noise reduction for improving quality of an image, detail enhancement, frame refresh rate conversion, etc.

The signal processor102may be achieved by a system on chip (SoC) where functions for the foregoing processes are integrated, or an image processing board (not shown) that an individual element capable of independently performing each process is mounted to a printed circuit board. The display apparatus10is internally provided with the signal processor102.

The display panel103displays an image based on an image signal output from the signal processor102. In the exemplary embodiment, the display panel103has not a non-emissive panel structure such as a liquid crystal display panel but a self-emissive structure. For example, the display panel103may be achieved by an organic light emitting diode (OLED) panel or a light emitting diode (LED) panel.

FIG. 5is a perspective view showing an inner structure of a stand200for a display apparatus10according to an exemplary embodiment.

Referring toFIG. 5, the stand200may internally include the driver, the swiveling indicator and the sensor. The driver may include a shaft301to be swiveled with respect to a driving axis. The shaft301may be made of metal. The shaft301may swivel within a range from a first angle (e.g. −45 degrees) to a second angle (e.g. +45 degrees).

In addition, the stand200may further include a lifter205to make the display100move up and down. The lifter205may be driven by the driver300to move the display100up and down. For example, the lifter205moves the display100up when the display apparatus10is turned on, but moves the display100down when the display apparatus10is turned off.

A region500shows the swiveling indicator and the sensor. Below, the swiveling indicator and the sensor will be described in detail with reference toFIG. 6showing an enlarged view of the region500.

FIG. 6is a perspective view showing a swiveling indicator520and a sensor530in a display apparatus10according to an exemplary embodiment.

A swiveling indicator520is arranged along a predetermined swiveling range of the display100, and has a shape showing a swiveling indication value corresponding to the swiveled angle of the display100. If a sensor530senses a swiveling indication value of the swiveling indicator520as the display100swivels, the controller determines the swiveled angle of the display100based on the sensed swiveling indication value.

The swiveling indicator520may have a shape having a first surface521, a second surface522provided at a position higher than that of the first surface521, and a slope indicating surface526connecting one end523(seeFIG. 7) of the first surface521and one end524(seeFIG. 7) of the second surface522. Further, the swiveling indicator520is placed around the shaft301of the driver300along a range from the first angle (e.g. −45 degrees) to the second angle (e.g. +45 degrees) corresponding to a predetermined swiveling range of the display100.

The sensor530is provided at a higher position by a first height528and a second height529from the first surface521the second surface522, respectively, in a direction perpendicular to the swiveling indicator520as shown in the figure. The sensor530may be a proximity sensor531that outputs a value corresponding to a distance from an object. Therefore, the proximity sensor531may output a value corresponding to the first height528if the display100is swiveled at an angle of −A degrees, and output a value corresponding to the second height529when the display100is swiveled at an angle of +A degrees.

That is, the swiveling indicator520includes the slope indicating surface526, and shows the swiveling indication value corresponding to the swiveled angle of the display100so that the proximity sensor531can output a value varied depending on a distance from the slope indicating surface526.

Referring toFIG. 7, the swiveling indicator520has the slope indicating surface526sloping to connect one end523of the first surface521and one end524of the second surface522. Therefore, the slope indicating surface526of the swiveling indicator520is used as the swiveling indication value corresponding to the swiveled angle of the display100.

FIG. 8is a cross-section view of a swiveling indicator820in a display apparatus10according to an exemplary embodiment.

Referring toFIG. 8, a swiveling indicator820is shaped to include a stepwise indicating surface826having a plurality of stepped portions that get higher step by step from one end823of a first surface821to one end823of a second surface822. The plurality of stepped portions in the stepwise indicating surface826may have the same height and the same width with each other. The proximity sensor531outputs different values respectively corresponding to the plurality of stepped portions in the swiveling indicator820, so that the stepwise indicating surface826of the swiveling indicator820can be used as the swiveling indication value corresponding to the swiveled angle of the display100.

FIG. 9is a top view of a swiveling indicator920of a display apparatus10according to an exemplary embodiment.

Referring toFIG. 9, a swiveling indicator920may be shaped to include a pitch indicating surface926, pitches of which become narrower from one end923of the swiveling indicator920toward the other end924. For example, a first pitch P1 the closest to one end923is wider than the next second pitch P2, and the second pitch P2 is wider than the next third pitch P3. At this time, the sensor530is provided as a sensor for sensing the pitches, and thus the controller determines the swiveled angle corresponding to the pitch varied as the display100swivels.

Thus, the pitch indicating surface926of the swiveling indicator920is used as the swiveling indication value corresponding to the swiveled angle of the display100.

FIG. 10is a top view of a swiveling indicator1020of a display apparatus10according to an exemplary embodiment.

Referring toFIG. 10, a swiveling indicator1020may have a color indicating surface1026varied in color tone from one end1023toward the other end1024. Here, variation in color tone may refer to gradations in which color, brightness or chroma is gradually or stepwise changed.

The sensor530may include a color sensor to sense change in color tone of the swiveling indicator1020as the swiveled angle of the display100is changed. The color sensor may include a color filter, a photodiode, etc. and distinguish among the three primary colors, i.e. red, green and blue by measuring quantity of ambient light and color based on difference in intrinsic wavelength among colors, thereby outputting the measurement as an analog or digital value to the controller.

Thus, the color indicating surface1026of the swiveling indicator1020is used as the swiveling indication value corresponding to the swiveled angle of the display100.

FIG. 11illustrates that a display apparatus10according to an exemplary embodiment is swiveled.

Referring toFIG. 11, if the driver300swivels the display100from the swiveled angle of −A degrees1110to +A degrees1130, the swiveling indicator520is swiveled together with the shaft301of the driver300. In the exemplary embodiment, the sensor530is stationarily/fixedly mounted to the stand300, but the exemplary embodiment is not limited thereto. Alternatively, the sensor may be swiveled as the display100is swiveled, and the swiveling indicator520may be stationarily mounted to the stand300.

FIG. 12illustrates an output value of a sensor as the display apparatus ofFIG. 11is swiveled.

Referring toFIG. 12, the proximity sensor531of the sensor530senses change in distance from the slope indicating surface of the swiveling indicator520as the display100ofFIG. 11is swiveled from −A degrees1110to +A degrees1130. That is, the sensor530outputs the minimum value at the swiveled angle of −A degrees1110and outputs the maximum value at the swiveled angle of +A degrees1130.

Because the storage160is storing a table where the swiveled angles of the display100are tabulated matching to the output values of the sensor530, it is possible to determine the swiveled angle of the display100based on the output value of the sensor530. Further, if the sensor530outputs at least one between the minimum value and the maximum value, the controller140may determine that the display100cannot swivel anymore and thus control the driver300to stop swiveling.

FIG. 13is a perspective view of a swiveling indicator520, a sensor530and a stopper535in a display apparatus according to an exemplary embodiment.

The sensor530includes a stopper535and a knob536to prevent the shaft301from limitless swiveling, and thus the swiveling indicator520includes a restrictor537to accommodate the knob536of the stopper535.

If one end of the restrictor537contacts the knob536of the stopper535while the restrictor537is swiveled together with the shaft301, the knob536is rotated and thus the sensor530senses that the knob536is rotated by the contact with the restrictor537.

When the sensor530outputs a sensed signal to the controller140, the controller140controls the driver300to stop swiveling the display100, thereby preventing the swiveled angle of the display100from exceeding a predetermined swiveling range.

FIG. 14is a top view of a swiveling indicator1420of a display apparatus10according to an exemplary embodiment.

Referring toFIG. 14, a swiveling indicator1420has a slope indicating surface1426connecting one end1423and one end1424of a second surface1422, and additionally includes a restrictor1437for accommodating the knob536of the stopper535.

At this time, a part of the sensor530may be provided to sense change in distance from the slope indicating surface1426, and the other part may be provided to sense swiveling of the stopper535.

FIG. 15is a top view of a swiveling indicator1520of a display apparatus10according to an exemplary embodiment.

A swiveling indicator1520may be shaped including a pitch indicating surface1526, pitches of which become narrower from one end1523of a first surface1521toward the other end1524on the first surface1521. For example, in the swiveling indicator1520, a first pitch the closest to one end1523is wider than the next second pitch, and the second pitch is wider than the next third pitch P3. In addition, the swiveling indicator1520may further include a restrictor1537for accommodating the knob536of the stopper535.

FIG. 16is a top view of a swiveling indicator1620of a display apparatus10according to an exemplary embodiment.

A swiveling indicator1620may have a color indicating surface1626varied in color tone from one end1623toward the other end1624. Here, variation in color tone may refer to gradations in which color, brightness or chroma is gradually or stepwise changed. The swiveling indicator1620may further include a restrictor1637for accommodating the knob536of the stopper535.

FIG. 17is a front view of a display apparatus10according to an exemplary embodiment.

Referring toFIG. 17, the display100of the display apparatus10may display a user interface1700for adjusting the swiveled angle of the display100. The user interface1700includes an image and a text to show a swiveled direction and a swiveled angle, and a menu bar1710to adjust the swiveled angle. The display100may be achieved by a touch display panel, and thus the display apparatus10may receive a user's touch input through the input unit150.

Further, the display apparatus10may control its swiveled angle as a separate remote controller400controls a menu bar1710to be moved. For example, if a user moves the menu bar1710rightward by +A degrees on the user interface1700through the remote controller400, the display1000is swiveled in the counterclockwise direction from 0 degrees to +A degrees. Thereafter, if a user presses a reset button of the remote controller400, the display100returns to the swiveled angle of 0 degrees.

FIG. 18illustrates that a display apparatus10according to an exemplary embodiment is swiveled.

If a user adjusts the swiveled angle of the display100to −A degrees on the user interface1700, the display100is swiveled at an angle of −A in the clockwise direction. At this time, the controller140stores the swiveled angle −A degrees in the storage160. If the display apparatus10is turned off, the display100may return to an initial position of 0 degrees. Thereafter, if the display apparatus10is turned on, the controller140controls the display100to swivel at the angle of −A degrees, which is stored in the storage160.

Therefore, a user does not have to adjust the swiveled angle as desired whenever the display apparatus10is turned on, and does not have to return the swiveled angle to 0 degrees whenever the display apparatus10is turned off.

FIG. 19is a flowchart of controlling a display apparatus10according to an exemplary embodiment.

Referring toFIG. 19, the display apparatus10senses the swiveling indication value of the shape corresponding to the swiveled angle of the display100that can swivel within a predetermined swiveling range with respect to the stand200(S1910). Here, the shape may include at least one of the slope indicating surface, the pitch indicating surface and the color indicating surface. Therefore, at least one of the slope indicating surface, the pitch indicating surface and the color indicating surface may be used as the swiveling indication value corresponding to the swiveled angle of the display100.

The display apparatus10determines the swiveled angle of the display100based on the sensed swiveling indication value (S1920), and provides at least one of support functions in accordance with the determined swiveled angle (S1930).

FIG. 20is a flowchart of controlling a display apparatus10according to an exemplary embodiment.

Referring toFIG. 20, the display apparatus10stores the swiveled angle of the display100, being currently viewed by a user, based on the swiveling indication value of the shape corresponding to the swiveled angle of the display100(S2010). Thereafter, if a user turns off the display apparatus10, the display100is swiveled to a preset off position (S2020). Thereafter, if a user turns on the display apparatus10, the display100is swiveled at the previously stored swiveled angle (S2030).

As described above, it is convenient for a user because the swiveled angle of the display is easily sensed and adjusted.

Although a few exemplary embodiments and drawings have been shown and described, it will be appreciated by those skilled in the art that various modifications and changes may be made in these exemplary embodiments without departing from the principles and spirit of the inventive concept. In particular, the proximity sensor used for determining the center of the shaft may be replaced by another sensor capable of measuring a distance. For instance, the proximity sensor may be replaced by an optical sensor, an ultrasonic sensor or an infrared sensor.

The operations according to the foregoing exemplary embodiments may be performed by a single controller. In this case, a program command for performing the operations to be implemented by various computers may be recorded in a computer readable medium. The computer readable medium may contain a program command, a data file, a data structure, etc. or combination thereof. The program command may be specially designed and made for the foregoing embodiments, or publicly known and available to those skilled in the art. As an example of the computer readable medium, there are a magnetic medium such as a hard disk drive, a floppy disk, a magnetic tape, etc. an optical medium such as a compact disc read only memory (CD-ROM), a digital versatile disc (DVD), a magnetic-optical medium such as a floptical disk, and a hardware device such as a read only memory (ROM), a random access memory (RAM), a flash memory, etc. specially configured to store and execute a program command. As an example of the program command, there is not only a machine code made by a compiler but also a high-level language code to be executable by a computer through an interpreter or the like. Therefore, the foregoing has to be considered as illustrative only. The scope of the inventive concept is defined in the appended claims and their equivalents. Accordingly, all suitable modification and equivalents may fall within the scope of the inventive concept of the disclosure.