KR101479777B1 - Display apparatus and control method thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device having a sliding-type speaker and a control method thereof.

A display device according to an embodiment of the present invention is a display device including: a speaker capable of being drawn out / in; A speaker driving unit that draws the speaker out of the display device and draws the drawn-out speaker into the display device; A position sensing unit for sensing a position of the speaker; And a control unit controlling the drawing / pulling of the speaker and controlling the driving direction of the speaker based on a signal sensed through the position sensing unit when the speaker is drawn / drawn.

Speaker, Incoming / Outgoing

Description

[0001] The present invention relates to a display apparatus and a control method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device having a sliding-type speaker and a control method thereof.

As LCDs and PDP panels are used as image panels, the thickness of display devices can be made much thinner than those of conventional CRT panels.

Particularly, since the role of design is very important in recent years, much efforts are being made to develop products with consumers' preferred designs.

1 and 2 show a general example of a display device using a general LCD or a PDP panel.

1, the speaker unit 1 may be integrally formed on both sides of the main body 10 of the display device or may be integrally formed with the main body 10 as shown in FIG. 2, There are many.

1, when the speaker unit 1 is integrally formed with the main body 10, the thickness of the main body 10 is thinner than that of the display apparatus using the conventional CRT panel, The volume is also limited by the thickness of the main body 10.

If the volume of the speaker unit 1 can not be secured over a certain level, the acoustic reproducibility of the bass band may be deteriorated. This is because the sound of the bass band shows a great difference in the reproducibility of the sound depending on the internal volume of the speaker unit 1, which can be called a so-called bass drum.

2, when the speaker unit 1 is detached from the main body 10, the sound reproducibility of the speaker unit 1 can be freely designed regardless of the size and thickness of the main body 10 However, it is troublesome to install it separately from the image display device, and it can be a hindrance to the product design.

In the embodiment of the present invention, it is possible to provide a sliding type speaker which is integrally installed inside the image display device and is drawn out to the outside according to the current operation state.

In the embodiment of the present invention, it is possible to solve the problem caused by the abnormal operation of the speaker driven by the sliding method.

According to the embodiment of the present invention, the position of the speaker driven by the sliding method is sensed, so that the driving of the speaker can be stopped or reversed during an abnormal operation.

A display device according to an embodiment of the present invention is a display device including: a speaker capable of being drawn out / in; A speaker driving unit that draws the speaker out of the display device and draws the drawn-out speaker into the display device; A position sensing unit for sensing a position of the speaker; And a control unit controlling the drawing / pulling of the speaker and controlling the driving direction of the speaker based on a signal sensed through the position sensing unit when the speaker is drawn / drawn.

A control method of a display apparatus according to an embodiment of the present invention is a method of controlling a display apparatus having a speaker capable of drawing and pulling in, the method comprising: drawing or pulling the speaker; Determining whether a sensing signal is received according to whether the speaker is normally drawn or drawn; And controlling the driving direction of the speaker according to whether the sensing signal is received or not.

A display device and a control method thereof according to an embodiment of the present invention allow a speaker, which is a core component of a display device, to be received therein, and also automatically discharge the accommodated speaker to the outside, Convenience and design freedom of the product can be improved.

In addition, noise generated during abnormal speaker driving can be removed, and the motor and the internal driving circuit can be protected from the noise.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the scope of the present invention to the embodiment shown, and that other embodiments falling within the scope of the present invention may be easily devised by adding, Can be proposed.

Although the terms used in the present invention are selected as general terms that are widely used at present, there are some terms selected by the applicant in specific cases. In this case, since the meaning is described in detail in the description of the present invention, It is to be understood that the present invention should be grasped as a meaning of a non-term.

FIG. 3 is a diagram illustrating a configuration of a display apparatus according to an embodiment of the present invention. FIG. 4 is a view for explaining the operation principle of a speaker according to an embodiment of the present invention. FIG. 6 is a flowchart illustrating a method of controlling a display apparatus according to an exemplary embodiment of the present invention. Referring to FIG.

3, the display device according to the embodiment of the present invention includes a speaker 100 capable of being drawn in and drawn out, a speaker 100 for pulling the speaker 100 out of the display device, A key input unit 120 for receiving a request command from a user; a position sensing unit 130 for sensing a position of the speaker 100; The controller 100 controls the pull-in / pull-in of the speaker 100 according to a command input through the key input unit 120 and controls the operation of the speaker according to a signal sensed through the position sensing unit 130 when the speaker is pulled out / And a noise removing unit 150 for removing noise generated when the speaker 100 is abnormally drawn or drawn.

The operation of the display device according to the embodiment of the present invention will now be described.

First, the speaker 100 outputs a voice signal input from the outside.

At this time, the speaker 100 is installed on both sides of the display device so as to be drawn out, and is drawn out to the outside of the display device according to a command inputted from the outside, or is drawn into the display device.

That is, as shown in FIG. 4, there is a separate speaker accommodating part (not shown) for accommodating the speaker in the display device, and is accommodated in the display device depending on whether the speaker is currently used, And is drawn out of the display device.

The speaker driving unit 110 draws the speaker 100 out of the display device or draws the drawn speaker into the display device.

That is, the speaker driving unit 110 includes a motor driving unit 112, a motor 114, and a power transmitting unit 116.

The motor driving unit 112 generates a forward rotation driving force and a reverse rotation driving force under the control of a control unit 140, which will be described later.

When the motor driving unit 112 generates a constant driving force, the motor 114 rotates in a forward direction. When a reverse driving force is generated, the motor 114 rotates in the reverse direction.

That is, the motor 114 is a bidirectional motor that is rotated forward and reverse according to the forward rotation driving force and the reverse rotation driving force generated by the motor driving unit 112, respectively.

The power transmission unit 116 converts the rotational motion of the motor 114 into a linear motion to move the speaker left and right.

For example, the power transmission unit 116 includes a rack gear whose upper end is connected to the lower end of the speaker, a drive gear which is engaged with the outer periphery of the rack gear to move the rack gear, And a power transmitting belt for transmitting the rotational force of the turning gear to the driving gear.

That is, the power transmission unit 116 draws the speaker 100 from the inside of the display device to the outside by moving the speaker in the left direction in response to the forward rotation of the motor 114, The speaker 100 is pulled into the display device by moving the speaker 100 in the right direction in response to the reverse rotation of the speaker 100. [

Here, the explanation of the speaker driving unit 110 is made by way of example of the left speaker 102 of the speaker, and it is obvious that the speaker driving unit controlling the driving of the right speaker 104 operates in the opposite manner .

The key input unit 120 is a unit for receiving a user request command inputted from the outside. Typically, the key input unit 120 may include an infrared receiver for receiving an infrared signal input through a remote controller, or a local key input unit provided at one side of the display .

The position sensing unit 130 senses the position of the speaker when the speaker 100 is drawn out and in, and outputs a sensing signal indicating whether the speaker is normally drawn or drawn.

5, the position sensing unit 130 includes a first sensing unit 132 for sensing whether the left speaker 102 is normally drawn, a second sensing unit 132 for sensing whether the left speaker 102 is normally drawn, A third sensing unit 136 for sensing whether the right speaker 104 is normally drawn or not and a fourth sensing unit 134 for sensing whether the right speaker 104 is normally drawn or not, 138).

In other words, one side of the left speaker is provided with a first position sensing contact part 160 which contacts the first sensing part 132 or the second sensing part 134, and one side of the right speaker 104 A second position sensing contact portion 170 is provided to contact the third sensing portion 136 or the fourth sensing portion 138. [

Hereinafter, the operation of the position sensing unit 130 will be described focusing on the operation of the left speaker.

The left speaker 102 is drawn out of the display device as the forward rotation power is transmitted from the speaker driver 110. [

That is, the first position sensing contact portion 160 is in contact with the second sensing portion 134 before the left speaker 102 is drawn out of the display device.

When the left speaker is pulled out, the first position sensing contact 160 is spaced apart from the second sensing unit 134. When the left speaker is normally pulled out, the first sensing unit 134 132).

Herein, the predetermined time refers to a time at which the speaker is normally drawn out, and may be changed according to the distance from the fully drawn-in portion to the normally drawn-out portion.

That is, the first sensing unit 132 outputs a sensing signal indicating that the left speaker is normally drawn as the first position sensing contact unit 160 of the left speaker is contacted.

On the contrary, when the drawn-out speaker is drawn in, the first position sensing contact portion 160 is in contact with the first sensing portion 132 and is spaced apart, and the left speaker normally enters the display device The second sensing unit 134 is contacted.

The second sensing unit 134 outputs a sensing signal indicating that the left speaker 102 is normally drawn when the first sensing contact unit 160 is in contact with the left speaker 102.

Similarly, the third sensing unit 136 and the fourth sensing unit 138 may output a sensing signal according to whether the right speaker 104 is normally drawn or drawn when the right speaker 104 is drawn out or drawn in. do.

The control unit 140 selectively extracts or brings in the speaker according to the operation state of the current display device and controls the driving of the speaker based on a sensing signal sensed through the position sensing unit 130 when the speaker is drawn or drawn. .

That is, when the power-on command is input from the key input unit 120, the control unit 140 outputs a control command for pulling out the speaker to the outside, and when the power-off command is input, And outputs a control command for bringing in.

Here, the control command is a command for driving the speaker driving unit 110 to rotate forward or backward.

In addition, the control unit 140 may output a control command for drawing the extracted speaker to the inside when a voice mute command is inputted from the key input unit 120 in addition to the power related command.

The control unit 140 determines whether a normal incoming or outgoing detection signal of the speaker is outputted from the position sensing unit 130 for a predetermined period of time after outputting the control command, .

That is, the control unit 140 outputs the normal withdrawal detection signal of the speaker from the first sensing unit and the third sensing unit 132 (136) for a predetermined time at the time of outputting the speaker withdrawal instruction at the time of withdrawing the speaker, The speaker is driven in a direction opposite to the current driving direction.

In other words, if the normal detection signal of the speaker is not output from the position sensing unit 130 for a certain period of time after the motor is rotated by forward rotation, the motor is rotated in the reverse direction, .

On the contrary, if the normal sensing signal of the speaker is not outputted from the position sensing unit 130 during the retraction of the motor by reversing the motor, the motor is rotated forward to retract the speaker.

In addition, if the normal pull-out or pull-in detection signal of the speaker is not outputted, the rotation of the motor may be stopped to stop the pull-out or pull-in operation of the speaker.

When the speaker does not output a normal pull-out or pull-in detection signal, that is, when the speaker is abnormally driven, motor noise due to an abnormal stop operation of the motor occurs.

Therefore, the noise eliminator 150 may be installed at the motor end to remove the noise generated due to abnormal operation of the speaker.

Here, the principle of the noise eliminator 150 is a general LPF (Low Pass Filter) principle, and the input high frequency signal is emitted to the outside through a ground (ground), and only the low frequency signal can be bypassed.

That is, the noise is generally a signal having a very high frequency (several kHz to several Mhz). Therefore, since the noise component is generally a high frequency component, the noise component is released to the ground so that only the normal signal can be used.

 Herein, since the noise removal principle is well known in the technical field of the present invention, a detailed description thereof will be omitted.

As a result, the moment the motor stops, the moment the motor stops, the stall / lagging (the moment the speaker is blocked by external force, the motor is idling or the motor is stopped - the voltage is still applied to the motor) And noise (external noise) (power noise, static electricity, etc.) can be effectively blocked, thereby protecting the internal circuit.

As described above, the display device according to the embodiment of the present invention can accommodate a speaker, which is a core component of the display device, inside the display device, and can automatically discharge the accommodated speaker to the outside, And the design freedom of the product can be increased.

In addition, noise generated during abnormal speaker driving can be removed, and the motor and the internal driving circuit can be protected from the noise.

As shown in FIG. 6, the control method of the display apparatus according to the embodiment of the present invention as described above first checks the drawing or pull-in condition of the speaker (S100). That is, it is checked whether or not a power-on command (speaker fetching condition) or a power-off command (speaker fetching condition) is received from the outside.

Subsequently, it is determined whether or not the drawing or pull-in condition command of the speaker is received according to the check (S110). That is, it is determined whether a power-on command or a power-off command is inputted from the outside.

If it is determined in step S110 that the speaker has been drawn or received, the motor is driven to draw or draw the speaker in step S120. That is, when a command according to the drawing condition of the speaker is received, the motor is driven in the normal rotation direction to draw the speaker out of the display device, and if a command according to the drawing condition of the speaker is received, And drives the speaker in the rotation direction to draw the speaker into the display device.

Then, the predetermined time is counted (S130). That is, it counts the time at which the speaker is completely drawn out or the time at which the speaker is drawn in a normal operation state.

In step S140, it is determined whether a normal drawing or drawing detection signal of the speaker has been output as the preset time elapses.

If it is determined in operation S140 that the normal drawing or drawing detection signal is output, the driving of the motor is stopped in operation S150.

If it is determined in operation S140 that the normal draw-in or draw-in detection signal is not output, the driving direction of the motor is driven in the opposite direction to the current direction in operation S160. That is, if the normal outgoing detection signal is not output during the outgoing operation of the speaker, the driving direction of the motor is driven in the direction opposite to the current direction, and the speaker is again drawn in. On the contrary, if the normal incoming detection signal is not output during the incoming operation of the speaker, the driving direction of the motor is driven in the opposite direction to the current direction, and the speaker is drawn out again.

Also, the noise generated in the abnormal operation of the speaker is emitted to the ground by the noise removing unit 150 provided in the display device, and is not introduced into the circuit inside the display device.

As described above, the control method of the display device according to the embodiment of the present invention allows the speaker, which is a core component of the display device, to be received therein, and automatically releases the accommodated speaker to the outside, And the freedom of design of the product can be increased.

In addition, noise generated during abnormal speaker driving can be removed, and the motor and the internal driving circuit can be protected from the noise.

FIG. 1 and FIG. 2 show a display device having a general speaker. FIG.

3 is a diagram illustrating a configuration of a display device according to an embodiment of the present invention.

4 is a view for explaining the operation principle of a speaker according to an embodiment of the present invention.

5 illustrates a detailed configuration of a display device according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating a method of controlling a display device according to an exemplary embodiment of the present invention. Referring to FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

100: speaker 110: speaker driving unit

120: key input unit 130:

140: control unit 150: noise rejection

Claims (10)

In the display device, A speaker capable of being drawn / drawn; A speaker driving unit that draws the speaker out of the display device and draws the drawn-out speaker into the display device; A position sensing unit for sensing a position of the speaker; And And controls the driving direction of the speaker based on a signal sensed by the position sensing unit when the speaker is pulled out or pulled in. And a controller for driving the speaker in a direction opposite to a current driving direction when a normal drawing or incoming detection signal is not received. The method according to claim 1, Wherein the control unit fetches the speaker to the outside when a power-on command is inputted from the outside, and draws the drawn-out speaker when a power-off command is inputted. The method according to claim 1, The position sensing unit A first sensing unit for sensing whether the left speaker is normally drawn or not, A second sensing unit for sensing whether the left speaker is normally drawn, A third sensing unit for sensing whether the right speaker is normally drawn or not, And a fourth sensing unit for sensing whether the right speaker is normally drawn or not. The method of claim 3, The speaker driver A motor driving unit for generating forward rotation and reverse rotation drive signals, A motor which is rotated forward and reverse in response to a drive signal generated by the motor driving unit; And a power transmission unit that draws or draws the speaker according to forward rotation and reverse rotation of the motor. 5. The method of claim 4, Wherein the control unit drives the motor in a direction opposite to the current driving direction when the normal sensing or drawing detection signal of the speaker is not transmitted from the position sensing unit for a predetermined time when the speaker is pulled out or drawn in. Device. 6. The method of claim 5, And a noise removing unit for removing motor noise generated when the speaker is abnormally drawn or drawn. A method of controlling a display device having a speaker capable of being drawn out and drawn in, Drawing or drawing the speaker; Determining whether a sensing signal is received according to whether the speaker is normally drawn or drawn; And And controlling the driving direction of the speaker according to whether the sensing signal is received, The step of controlling the driving direction of the speaker according to whether the sensing signal is received And driving the speaker in a direction opposite to a current driving direction when a normal drawing or drawing detection signal of the speaker is not received for a predetermined time when the speaker is drawn or drawn. 8. The method of claim 7, The step of drawing or pulling the speaker When the power-on command is input from the outside, drawing the speaker out of the display device; And if the power off command is inputted from the outside, drawing the drawn-out speaker into the inside of the display apparatus. delete 8. The method of claim 7, Further comprising the step of removing noise generated in an abnormal operation state of the speaker.

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