KR20110016652A - Method for controlling rf signal strength, broadcast transmitting apparatus, broadcast receiving apparatus and display apparatus thereof - Google Patents

Abstract

The present invention relates to a method for controlling a reception sensitivity of a radio signal, a broadcast transmission device, a broadcast reception device, and a display device using the same, wherein the method includes changing an angle of an antenna provided in at least one of the broadcast transmission device and the broadcast reception device, Measuring signal reception sensitivity of the broadcast reception device; Detecting an antenna angle having the highest measured signal reception sensitivity; And fixing the angle of the antenna to the detected angle.

Description

Method for controlling reception sensitivity of wireless signal, broadcast transmitting apparatus, broadcast receiving apparatus and display apparatus using same

The present invention relates to a method and apparatus for transmitting and receiving a signal, and more particularly, to a method and apparatus for transmitting and receiving a broadcast signal using wireless communication.

In general, a display device includes a broadcast receiving unit that receives and processes a broadcast signal from an airwave, a cable, and other external devices (VCR, DVD, etc.) and outputs it, and a display unit displaying an image of the processed broadcast signal on a screen. Can be.

Meanwhile, the broadcast receiving unit and the display unit may be separately configured, and in recent years, a wireless method of transmitting and displaying a broadcast signal received using a separate broadcast receiving device to a display device through wireless communication. A display system is provided.

An object of the present invention is to provide a broadcast transmitting / receiving method and apparatus capable of efficiently transmitting and receiving broadcast signals using wireless communication.

According to an aspect of the present invention, there is provided a method for controlling wireless signal reception sensitivity, the method comprising: measuring signal reception sensitivity of the broadcast reception device while changing an angle of an antenna included in at least one of a broadcast transmission device and a broadcast reception device; Detecting an antenna angle having the highest signal reception sensitivity using the measured signal reception sensitivity for each antenna angle; And fixing the angle of the antenna to the detected angle.

In accordance with another aspect of the present invention, a broadcast reception device includes an antenna for receiving an RF signal from a broadcast transmission device; A driver for changing an angle of the antenna; A reception sensitivity measurement unit for measuring a signal reception sensitivity of the antenna; And a controller configured to detect an antenna angle having the highest signal reception sensitivity using the measured signal reception sensitivity for each antenna angle, and to control the driving unit to fix the antenna to the detected angle.

Broadcast transmission apparatus according to an embodiment of the present invention, the antenna for transmitting an RF signal to the broadcast receiving device; A driver for changing an angle of the antenna; And a controller for detecting an antenna angle having the highest signal reception sensitivity using the signal reception sensitivity measured according to the changed antenna angle, and controlling the driving unit to fix the antenna to the detected angle.

On the other hand, the display device according to an embodiment of the present invention may be configured to include the broadcast receiving device.

In addition, the wireless signal reception sensitivity control method may be implemented as a computer-readable recording medium recording a program for execution in a computer.

According to an embodiment of the present invention, by detecting the antenna angle with the highest signal reception sensitivity and varying the antenna angle of the broadcast transceiver, it is possible to provide an optimal reception sensitivity in transmission and reception of a broadcast signal using wireless communication. Accordingly, the location of the broadcast transceiver may be easily changed.

Hereinafter, a method for controlling reception sensitivity of a wireless signal, a broadcast transmission device, a broadcast reception device, and a display device using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating an embodiment of a configuration of a broadcast transmission / reception system, and the broadcast transmission / reception system may include a broadcast transmission device 100 and a broadcast reception device 200.

Referring to FIG. 1, the broadcast transmission device 100 receives a broadcast signal including an image from an air wave, a cable, or an external device, converts the received broadcast signal into data in a form that can be transmitted wirelessly, and wirelessly. send.

The broadcast receiving device 200 receives and processes data wirelessly transmitted from the broadcast transmitting device 100, and for this purpose, one or more data for wirelessly transmitting and receiving data between the broadcast transmitting device 100 and the broadcast receiving device 200. The wireless communication standard may be preset.

Meanwhile, the broadcast transmission device 100 may include an HDMI (High-Definition Multimedia Interface) terminal to which an antenna or external devices are connected, a Universal Serial Bus (USB) terminal, a component terminal, an external input terminal, an RGB terminal, Various input terminals such as an antenna cable terminal may be provided to receive a broadcast signal using the input terminal.

The broadcast transmitting device 100 may be a set-top box (STB) that receives a broadcast signal through a wired or wireless network, converts the received broadcast signal, and wirelessly transmits the received broadcast signal to the broadcast receiving device 200. .

However, the broadcast transmitting device 100 according to the present invention is not limited to the set top box STB, and may include all kinds of devices capable of receiving a broadcast signal transmitted from the outside and wirelessly transmitting the broadcast signal to the broadcast receiving device 200. Can be.

For example, the broadcast transmission device 100 according to the present invention may be implemented in a portable terminal such as a computer or a mobile phone.

In addition, the broadcast receiving device 200 may receive and process data wirelessly transmitted from the broadcast transmitting device 100 and transmit the data to an external device that outputs a video or audio included in the broadcast signal.

For example, the broadcast reception device 200 may convert an image signal wirelessly transmitted from the broadcast transmission device 100 into a form that can be displayed on a display device (not shown) and output the converted signal. More specifically, when the video signal wirelessly transmitted from the broadcast transmitting device 100 is encoded by a coding scheme such as MPEG, the broadcast receiving device 200 decodes the received video signal ( The decoding may be output to a display device (not shown).

According to an exemplary embodiment of the present invention, the broadcast transmitting device 100 and the broadcast receiving device 200 may use various wireless communication standards such as WiHD (Wireless HD), WHDi (Wireless Home Digital Interface), or WiFi (Wireless Lan). Broadcast signals may be transmitted and received using wireless communication standards.

The WiHD uses a frequency band of about 60 GHz and transmits and receives data at a transmission rate of about 4 Gbps, thereby enabling transmission without compressing HD image data of 1080p (1920 × 1080). However, since the WiHD uses a high frequency of 60 GHz band, the data transmission / reception distance is about 10 m, and the transmission / reception quality may be easily affected by peripheral obstacles in the installation space.

The WHDi may transmit and receive data at a transmission rate of about 1.8 Gbps using a frequency band of about 5 GHz. In addition, since the WHDi uses a relatively low frequency band of 5 GHz, the transmission / reception distance is about 30 m, and the transmission / reception quality may not be greatly influenced by peripheral obstacles in the installation space. Meanwhile, when transmitting HD video data of 1080p (1920 × 1080) using the WHDi according to a transmission rate of about 1.8 Gbps, the broadcast transmitting device 100 needs to compress and transmit the HD video data partially. .

In addition, the WiFi may transmit and receive data at a transmission rate of about 54 Mbp using a frequency band of 2.4 GHz. Since the WiFi uses a low frequency band of 2.4 GHz, the transmission and reception distance is about 50 to 200 m, and the transmission and reception quality may be almost unaffected by peripheral obstacles in the installation space. On the other hand, according to a low transmission rate of about 54Mbp, if you want to transmit the 1080p (1920 × 1080) HD video data using the WiFi, the broadcast transmission device 100 must compress and transmit the HD video data, and Accordingly, image degradation may occur in an image signal received by the broadcast reception device 200.

Meanwhile, in addition to the wireless communication standard described above, the broadcast transmitting device 100 and the broadcast receiving device 200 may also use various short-range wireless communication standards such as Bluetooth, ZigBee, or binary CDMA. Multiple access) may be used to wirelessly transmit and receive data according to a broadcast signal using communication standards.

According to an embodiment of the present invention, the broadcast transmitting device 100 and the broadcast receiving device 200 may transmit and receive video and audio data using any one of the various wireless communication standards as described above.

Meanwhile, the broadcast transmitting device 100 and the broadcast receiving device 200 may transmit and receive video and audio data using two or more of the wireless communication standards as described above, for example, the broadcast transmitting device 100. And one of the two or more standards that can be supported according to the performance, the installation environment, the resolution of the image, etc. of each of the broadcast receiving device 200 may be used for data transmission and reception.

2 is a block diagram illustrating another embodiment of a configuration of a broadcast transmission / reception system, and the broadcast transmission / reception system may include a broadcast transmission device 100 and a plurality of broadcast reception devices 200, 210, and 220. have.

Referring to FIG. 2, the broadcast transmission device 100 may be connected to a plurality of broadcast reception devices 200, 210, and 220 through a wireless network. That is, the broadcast transmission device 100 may convert the broadcast signal received from the outside into data capable of wireless transmission and then wirelessly transmit the data to at least one of the broadcast reception devices 200, 210, and 220.

For example, the broadcast transmission device 100 may select one or more broadcast reception devices from among a plurality of broadcast reception devices 200, 210, and 220 to receive a broadcast signal, and receive the broadcast signal received from the user. Wireless transmission to the broadcast receiving device selected by the.

To this end, the broadcast transmitting device 100 may include a plurality of radio transmitters (not shown) corresponding to each of the plurality of broadcast receivers 200, 210, and 220, and a plurality of radio transmitters (not shown). Each may wirelessly transmit video and audio data to a corresponding broadcast receiving device.

The wireless communication standard for data transmission and reception may be the same or different from each other in each of the plurality of broadcast reception apparatuses 200, 210, and 220. For example, according to a performance or an installation location of each of the plurality of broadcast receiving devices 200, 210, and 220, a wireless communication standard for receiving data from each of the plurality of broadcast receiving devices 200, 210, and 220 may be used. It may be set differently from each other.

Meanwhile, the broadcast transmitting device 100 may include a number smaller than the number of the broadcast receiving devices 200, 210, and 220, for example, one wireless transmitter (not shown). In this case, the broadcast transmission The device 100 may wirelessly transmit data using multi-channel communication, that is, using a plurality of channels corresponding to each of the plurality of broadcast receiving devices 200, 210, and 220.

FIG. 3 is a block diagram illustrating another embodiment of a configuration of a broadcast transmission / reception system, and a description of the same description as that described with reference to FIGS. 1 and 2 in the broadcast transmission / reception system illustrated in FIG. 3 will be omitted below. .

Referring to FIG. 3, the display apparatus 300 according to an exemplary embodiment of the present invention may include the broadcast receiving device 200 and the display module 310 as described above.

That is, the broadcast transmitting device 100 receives a broadcast signal from the outside and wirelessly transmits the broadcast signal to the broadcast receiving device 200, and the broadcast receiving device 200 included in the display device 300 can display the wirelessly transmitted data. The image signal may be processed and output to the display module 310.

The display module 310 may display an image by using an image signal input from the broadcast receiving device 200, and for this, a liquid crystal display (LCD), a plasma display panel (PDP), an electro luminescent display (ELD), It may include a display panel (not shown) of various display methods such as a vacuum fluorescent display (VFD).

4 is a block diagram illustrating a configuration of a broadcast transmitting apparatus according to an embodiment of the present invention. The broadcast transmitting apparatus 100 illustrated in FIG. 4 includes a broadcast signal receiving unit 110, a first signal processing unit 120, and a first control unit ( 130, a first antenna 140, and a first driver 150.

Referring to FIG. 4, the broadcast signal receiver 110 receives a broadcast signal from the outside, and tunes and receives a signal corresponding to a broadcast channel selected by a user among data streams transmitted to the outside through an antenna or a cable. It may be connected to a tuner (not shown) or an external device and include input terminals such as HDMI, USB, component, and RGB for receiving a signal.

The first signal processor 120 may convert the signal received by the broadcast signal receiver 110 into data in a form capable of wireless transmission according to a preset wireless communication standard and output the converted signal.

For example, the first signal processor 120 extracts service information from the data stream received by the broadcast signal receiver 110 and separates various channel information therefrom and the data stream. And an A / V processor (not shown) for decoding video and audio data extracted from the same.

The first controller 130 controls the overall operation of the broadcast transmission device 100, and more specifically, a broadcast signal desired by a user may be wirelessly transmitted to the broadcast transmission device 200 through the first antenna 140. Operations of the broadcast signal receiver 110, the first signal processor 120, and the first antenna 140 may be controlled.

5 is a block diagram illustrating a configuration of a broadcast reception device according to an embodiment of the present invention. The broadcast reception device 100 shown in FIG. 5 includes a second antenna 210, a reception sensitivity measurement unit 220, and a second control unit ( 230, a second driver 240, and a second signal processor 250.

Referring to FIG. 5, the second antenna 210 receives data wirelessly transmitted from the broadcast transmitting device 100, more specifically, the first antenna 220 of the broadcast transmitting device 100.

The second signal processor 250 processes and outputs data received through the second antenna 210. For example, when the received image data is data encoded by a specific coding scheme, for example, an MPEG coding scheme, the second signal processor 250 decodes the received image data into a displayable form. Can be output.

The second control unit 230 controls the overall operation of the broadcast receiving device 200, and for example, the data received through the second antenna 210 is converted into a displayable form and then output to a display device (not shown). The second signal processor 250 may be controlled so as to be controlled.

Meanwhile, data transmission / reception capability between the broadcast transmitting device 100 and the broadcast receiving device 200 that transmits and receives data wirelessly, that is, the signal received from the broadcast receiving device 200 is received by the broadcast receiving device 200. The sensitivity may be affected by the distance between the broadcast transmitting device 100 and the broadcast receiving device 200, the presence of peripheral obstacles, or the direction of the first and second antennas 140 and 210 provided in the respective devices.

In particular, when data is transmitted and received between the broadcast transmitting device 100 and the broadcast receiving device 200 using WiHD having a high frequency band of several tens of GHz, for example, a frequency band of about 60 GHz, the data transmission / reception distance is about 10 m. Short and high linearity, the signal reception sensitivity can be affected by the surrounding obstacles.

In addition, when the signal reception sensitivity is lowered as described above, data loss may occur between the broadcast transmission device 100 and the broadcast reception device 200, and thus may be received and displayed through the broadcast reception device 200. The quality of the image may be degraded.

According to an embodiment of the present invention, an antenna angle having an optimal signal reception sensitivity is detected by changing the direction of at least one of the antenna of the broadcast transmitting device 100 or the antenna of the broadcast receiving device 200, and detecting By fixing the antenna at a predetermined angle, it is possible to enable data transmission and reception with an optimal signal reception sensitivity between the broadcast transmission device 100 and the broadcast reception device 200.

6 is a flowchart illustrating a method for controlling wireless signal reception sensitivity according to a first embodiment of the present invention. The control method shown in FIG. 6 is a block diagram showing the configuration of the broadcast transmitting apparatus 100 shown in FIG. The description will be made in conjunction.

Referring to FIG. 6, the first driver 150 changes the angle of the first antenna 140 under the control of the first controller 130 (operation 400).

For example, the first driver 150 may change the angle of the first antenna 140 by changing the direction of the RF antenna module including the IC in which the first antenna 140 is integrated. One or more gears for adjusting the angle of the RF antenna module provided with the first antenna 140 by transmitting the rotation of the motor (not shown) and the rotation of the motor (not shown) under the control of the controller 130. It may be configured to include (gear).

In operation 400, the first controller 130 may control the first driver 150 to change the angle of the first antenna 140 within a preset range.

As the angle of the first antenna 140 is changed, signal reception sensitivity between the broadcast transmitting device 100 and the broadcast receiving device 200 is measured for each angle (step 410). For example, the measured signal reception sensitivity may be a received signal strength indicator (RSSI) or a packet error rate (PER).

The signal reception sensitivity is measured by the broadcast reception device 200, more specifically, by the reception sensitivity measurement unit 220 included in the broadcast reception device 200, and then the broadcast reception device 100 from the broadcast reception device 200. Can be sent to.

Meanwhile, the broadcast transmission device 100 may wirelessly transmit a test signal for measuring the signal reception sensitivity to the broadcast reception device 200. Unlike the above embodiment, the broadcast transmission device 100 may provide a separate module for measuring the reception signal sensitivity. It may be further provided.

In addition, the method for measuring the signal reception sensitivity according to the angle of the first antenna 140 in step 410, the signal reception sensitivity can be measured at a predetermined time period while the angle of the first antenna 140 is changed, The measured signal reception sensitivity of the first antenna 140 for each angle may be stored in a memory (not shown).

The first controller 130 detects an angle of the first antenna 140 having the highest signal reception sensitivity using the measured signal reception sensitivity of the first antenna 140 at step 420.

For example, when the signal reception sensitivity is the reception signal strength RSSI, the first controller 130 may determine the angle of the first antenna 140 corresponding to the largest value among the measured reception signal strengths RSSI. Can be detected.

In addition, when the signal reception sensitivity is a packet error rate (PER), the first controller 130 may detect an angle of the first antenna 140 corresponding to the smallest value among the measured packet error rates (PER). have.

The first controller 130 fixes the first antenna 140 at an angle having the highest signal reception sensitivity detected in step 420 (step 430). For example, the first controller 130 outputs a signal for controlling the change to the detected angle to the first driver 150, and the first driver 150 receiving the control signal receives the first antenna. The first antenna 140 may be fixed to have the detected angle by changing the direction of the RF antenna module including the 140.

Meanwhile, the broadcast receiving device 200 as shown in FIG. 5 may also fix the angle of the second antenna 210 to have an optimal signal reception sensitivity in the same manner as described with reference to FIGS. 4 and 6. Can be. Therefore, the description of the same method as the one described with reference to FIGS. 4 and 6 in the signal reception sensitivity control method of the broadcast reception device 200 will be omitted below.

That is, referring to FIGS. 5 and 6, the second driver 240 changes the angle of the second antenna 210 within a predetermined range under the control of the second controller 230 (400), and receives the sensitivity. The measurement unit 220 measures the reception sensitivity of the signal received through the second antenna 210 (step 410).

For example, the reception sensitivity measuring unit 220 may measure the received signal strength RSSI or the packet error rate PER according to the angle of the second antenna 210.

The second controller 230 detects an angle of the second antenna 210 having the highest signal reception sensitivity by using the measured signal reception sensitivity of the second antenna 210 at step 420.

The second controller 230 controls the second driver 240 to fix the second antenna 210 at an angle having the highest signal reception sensitivity detected in step 420 (step 430).

FIG. 7 is a flowchart illustrating a method for controlling wireless signal reception sensitivity according to a second embodiment of the present invention. The control method shown in FIG. 7 is shown in FIG. 4 and the broadcast transmitting device 100 shown in FIG. This will be described with reference to the broadcast receiving device 200.

Referring to FIG. 7, first, the first antenna 140 of the broadcast transmission device 100 is fixed to a preset position, for example, a central position (step 500).

For example, referring to FIG. 9, in operation 500, the first controller 130 controls the first driver 150 to include a first antenna 140, more specifically, a first antenna 140. The RF antenna module may be fixed so as to face in a horizontal direction with the broadcast reception device 100, and at this time, the angle θ of the first antenna 140 may be fixed at a central position of 0 degrees.

As described above, while the first antenna 140 of the broadcast transmitting device 100 is fixed at the center position, the received signal strength RSSI is changed while changing the angle of the second antenna 210 of the broadcast receiving device 200. It is measured (step 510). In addition, the measured received signal strength RSSI of the second antenna 210 may be stored in a memory (not shown) of the broadcast reception device 200.

That is, in step 510, the second controller 230 of the broadcast reception device 200 may control the second driver 240 to change the angle of the second antenna 210 within a predetermined range. While the angle of the two antennas 210 is changed, the reception sensitivity measuring unit 220 may measure the received signal strength RSSI of the signal received from the broadcast transmitting device 100 through the second antenna 210.

As an embodiment of the present invention, as shown in FIG. 8, the second controller 230 controls the second driver 240 so that the second antenna 210, more specifically, the second antenna 210 is controlled. The included RF antenna module may be changed from left to right on the basis of the direction perpendicular to the broadcast receiving device 200, and accordingly, the second antenna 210 may be changed in a range of 90 degrees left and right and 180 degrees in total, respectively. have.

When the angle change of the second antenna 210 within the preset range as described above is completed (step 520), the second controller 230 of the broadcast reception device 200 may measure the received signal strength ( The angle of the second antenna 210 having the highest value among the RSSIs is detected, and the second driver 240 is controlled to fix the second antenna 210 at the detected angle (step 530).

FIG. 10 is a graph illustrating a method of adjusting an antenna angle according to a received signal strength (RSSI), and according to an embodiment of the received signal strength (RSSI) for each angle of the second antenna 210 measured in step 510. It is shown.

Referring to FIG. 10, the received signal strength RSSI has the highest value when the angle of the second antenna 210 is 45 degrees.

Accordingly, the second controller 230 of the broadcast receiving device 200 may control the second driver 240 to fix the second antenna 210 to 45 degrees having the highest received signal strength RSSI.

Accordingly, referring to FIG. 8, the RF antenna module of the broadcast reception device 200 including the second antenna 210 of the broadcast reception device 200, and more specifically, the second antenna 210 may be left 45. It may be fixed in the degree direction.

After the angle of the second antenna 210 of the broadcast receiving device 200 is fixed as described above, the packet error rate PER is measured while changing the angle of the first antenna 140 of the broadcast transmitting device 100 ( Step 540).

As an embodiment of the present invention, as shown in FIG. 9, the first control unit 130 controls the first driving unit 150 so that the first antenna 140, more specifically, the first antenna 140 is connected. The included RF antenna module may be changed by 45 degrees up and down, respectively, based on the horizontal direction to the broadcast transmitting device 100, and accordingly, the angle θ of the first antenna 140 is 90 degrees up and down, respectively, and all 90 degrees. It can be changed in the range of the figure.

As shown in FIG. 8 and FIG. 9, the angle of the second antenna 210 of the broadcast reception device 200 is changed from 180 degrees to the left and right, and the angle of the first antenna 140 of the broadcast transmission device 100 is changed. By changing the angle in the range of 90 degrees up and down, it is possible to prevent the phenomenon that the wireless communication itself between the first antenna 140 of the broadcast transmitting device 100 and the second antenna 210 of the broadcast receiving device 200 does not occur. can do.

Meanwhile, while the angle of the first antenna 140 is changed, the reception sensitivity measuring unit 220 of the broadcast receiving device 200 receives a packet of a signal received from the broadcast transmitting device 100 through the second antenna 210. The error rate (PER) can be measured. In addition, the broadcast reception device 200 may transmit the measured packet error rate PER to the broadcast transmission device 100 through the second antenna 210.

For example, the broadcast reception device 200 may transmit the measured packet error rate PER of the angle of the first antenna 140 to the broadcast transmission device 100 through a control channel. The angle-specific packet error rate PER of the first antenna 140 may be stored in a memory (not shown) of the broadcast transmission device 100.

When the angle change of the first antenna 140 within the preset range as described above is completed (step 550), the first controller 130 of the broadcast transmission apparatus 100 may determine the packet error rate (PER) measured in step 540. ) Detects the angle of the first antenna 140 having the lowest value and controls the first driver 150 to fix the first antenna 140 at the detected angle (step 560).

FIG. 11 is a graph illustrating a method of adjusting an antenna angle according to a packet error rate (PER). FIG. 11 illustrates an embodiment of the packet error rate (PER) for each angle of the first antenna 140 measured in step 540. It is.

Referring to FIG. 11, the measured packet error rate PER has the lowest value when the angle of the first antenna 210 is about 67 degrees.

Accordingly, the first controller 130 of the broadcast transmission device 100 may control the first driver 150 to fix the first antenna 210 to about 67 degrees having the lowest packet error rate PER.

Accordingly, referring to FIG. 9, the RF antenna module of the broadcast transmission device 100 including the first antenna 140 of the broadcast transmission device 100, and more specifically, the first antenna 140 may have a central position. It can be fixed in the changed position about 22 degrees upwards.

By the method described with reference to FIGS. 7 to 11, the first antenna 140 of the broadcast transmitting device 100 and the second antenna 210 of the broadcast receiving device 200 have an optimal signal reception sensitivity. It may be fixed at an angle, thereby improving the quality of the image transmitted and displayed from the broadcast transmitting device 100 to the broadcast receiving device 200.

In addition, the wireless signal reception sensitivity control method according to the present invention described above may be stored in a computer-readable recording medium produced as a program for execution in a computer, examples of the computer-readable recording medium are ROM, RAM , CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet).

The computer readable recording medium can be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the broadcast reception method may be easily inferred by programmers in the art to which the present invention belongs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

1 and 3 are block diagrams illustrating embodiments of a broadcast transmission / reception system.

4 is a block diagram illustrating a configuration of a broadcast transmission apparatus according to an embodiment of the present invention.

5 is a block diagram illustrating a configuration of a broadcast receiving apparatus according to an embodiment of the present invention.

6 is a flowchart illustrating a method of controlling wireless signal reception sensitivity according to a first embodiment of the present invention.

7 is a flowchart illustrating a method of controlling wireless signal reception sensitivity according to a second embodiment of the present invention.

8 and 9 illustrate embodiments of a method of changing an angle of an antenna.

FIG. 10 is a graph for describing a method of adjusting an antenna angle according to measured received signal strength (RSSI).

FIG. 11 is a graph for explaining a method of adjusting an antenna angle according to a measured packet error rate (PER).

Claims (20)

A method of controlling reception sensitivity between a broadcast transmission device and a broadcast reception device that transmits and receives a signal wirelessly, Measuring a signal reception sensitivity of the broadcast reception device while changing an angle of an antenna included in at least one of the broadcast transmission device and the broadcast reception device; Detecting an antenna angle having the highest signal reception sensitivity using the measured signal reception sensitivity for each antenna angle; And Fixing the angle of the antenna to the detected angle. The method of claim 1, wherein the signal reception sensitivity is And at least one of a received signal strength indicator (RSSI) and a packet error rate (PER) measured by the broadcast receiving device. The method of claim 2, wherein said measuring step And measuring the received signal strength (RSSI) of the broadcast receiving device while changing the antenna angle of the broadcast receiving device while the antenna of the broadcast transmitting device is fixed. The method of claim 3, wherein the measuring step And measuring a packet error rate (PER) of the broadcast receiving device while changing the antenna angle of the broadcast transmitting device while the antenna of the broadcast receiving device is fixed. The method of claim 4, wherein The antenna of the broadcast reception device is fixed at the highest angle of the measured reception signal strength (RSSI), and the antenna of the broadcast transmission device is wireless signal reception sensitivity at which the measured packet error rate (PER) is fixed at the lowest angle. Control method. The method of claim 1, Receiving sensitivity control method of a wireless signal in which the angle of the antennas provided in each of the broadcast transmitting apparatus and the broadcast receiving apparatus is changed in a different direction. The method of claim 1, Any one of the antennas provided in each of the broadcast transmitting device and the broadcast receiving device has a change in angle within a range of 90 degrees or less. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 1 to 7. In the broadcast reception device for receiving a signal from a broadcast transmission device using a wireless network, An antenna for receiving an RF signal from the broadcast transmitting device; A driver for changing an angle of the antenna; A reception sensitivity measurement unit for measuring a signal reception sensitivity of the antenna; And And a controller configured to detect an antenna angle having the highest signal reception sensitivity using the measured signal reception sensitivity for each antenna angle, and to control the driving unit to fix the antenna to the detected angle. The antenna of claim 9, wherein the antenna is A broadcast receiving device whose angle is changed from side to side with respect to a vertical direction. The method of claim 9, wherein the reception sensitivity measuring unit And a reception signal strength (RSSI) measured according to the change of the antenna angle by using the RF signal received from the antenna. The method of claim 9, wherein the reception sensitivity measuring unit And a packet error rate (PER) when the antenna is fixed by using the RF signal received from the antenna. The method of claim 12, wherein the antenna And a broadcast receiving device transmitting the measured packet error rate (PER) to the broadcast transmitting device. A display device comprising the broadcast receiving device according to any one of claims 9 to 13. In the broadcast transmission device for transmitting a signal to a broadcast reception device using a wireless network, An antenna for transmitting an RF signal to the broadcast receiving device; A driver for changing an angle of the antenna; And a controller for detecting the antenna angle having the highest signal reception sensitivity using the signal reception sensitivity measured according to the changed antenna angle, and controlling the driving unit to fix the antenna to the detected angle. . The method of claim 15, wherein the antenna A broadcast transmitting device in which an angle is changed up and down around a horizontal direction. The method of claim 15, And a range in which the angle of the antenna is changed is 90 degrees or less. The method of claim 15, wherein the control unit And a broadcast transmission device for detecting an antenna angle having a lowest packet error rate (PER) measured by the broadcast reception device. 19. The apparatus of claim 18, wherein the antenna is And a broadcast transmission device receiving the packet error rate (PER) from the broadcast reception device. The method of claim 15, wherein the antenna And a broadcast transmitting device transmitting the RF signal to a plurality of broadcast receiving devices.

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