KR20110069638A - Method and apparatus for receiving media signal, and display apparatus thereof - Google Patents

Abstract

PURPOSE: A signal receiving method and apparatus, and a display device using the same are provided to receive a signal through an antenna having highest receive sensitivity of antennas having different directions. CONSTITUTION: A receive sensitivity measuring unit measures the RSSI(Received Signal Strength Indication) of the antennas of a receiving device(400). A display unit displays the measured RSSI(410). A user input unit receives the selection of one among RSSI-indicated antennas from a user(420). If an antenna having the highest receive sensitivity is selected, the receiving device receives a signal through the selected antenna from a transmitting device(430).

Description

Method and apparatus for receiving signal, and display device 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 media signal using wireless communication.

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

On the other hand, the broadcast receiving unit and the display unit may be configured separately, each of which is a wireless (wireless) method of transmitting and displaying the media signal received recently using a separate receiving device to the display device using a wireless communication Display systems are provided.

An object of the present invention is to provide a signal receiving method and apparatus capable of efficiently transmitting and receiving media signals using wireless communication, and a display apparatus using the same.

According to an aspect of the present invention, there is provided a signal reception method comprising: receiving a signal from a transmission device connected to a wireless network, and measuring signal reception sensitivity of a plurality of antennas; Displaying the measured signal reception sensitivity; Selecting one of the antennas in which the signal reception sensitivity is indicated; And receiving a signal from the transmitting device using the selected antenna.

A receiving apparatus according to an embodiment of the present invention includes a plurality of antennas for receiving a media signal from a transmitting apparatus connected to a wireless network and receiving a signal from the transmitting apparatus; A reception sensitivity measuring unit measuring signal reception sensitivity of each of the plurality of antennas; A display unit displaying the measured signal reception sensitivity; And a user input unit configured to select an antenna having the highest reception sensitivity among the antennas.

The display device according to the embodiment of the present invention may be configured to include the receiving device.

In addition, the signal receiving 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 receiving the signal using the antenna having the highest signal reception sensitivity among the antennas installed in different directions, it is possible to provide the optimum reception sensitivity in the transmission and reception of media signals using wireless communication, Accordingly, the position of the transceiver may be easily changed.

Hereinafter, a method of controlling a reception sensitivity of a wireless signal, a transmitting device, a receiving 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 signal transmission / reception system, and the signal transmission / reception system may include a transmission device 100 and a reception device 200.

Referring to FIG. 1, the transmission apparatus 100 receives a media signal including an image from an airwave, a cable, or an external device, and converts the received media signal into data in a wireless transmission format for wireless transmission. do.

The receiving device 200 receives and processes data wirelessly transmitted from the transmitting device 100, and for this purpose, at least one wireless communication standard for wirelessly transmitting and receiving data between the transmitting device 100 and the receiving device 200 is provided. It may be set in advance.

On the other hand, the transmitting device 100 is an HDMI (High-Definition Multimedia Interface) terminal, USB (Universal Serial Bus) terminal, component terminal, external input terminal, RGB terminal, Various input terminals such as an antenna cable terminal may be provided to receive a media signal using the input terminal.

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

However, the transmitting apparatus 100 according to the present invention is not limited to the set top box STB, and may include any kind of apparatus capable of receiving a media signal transmitted from the outside and wirelessly transmitting it to the receiving apparatus 200. .

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

In addition, the reception apparatus 200 may receive and process data transmitted wirelessly from the transmission apparatus 100 and then transmit the data to an external device that outputs an image or audio included in a media signal.

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

According to an embodiment of the present invention, the transmitting device 100 and the receiving device 200 may be connected to various wireless communication standards, for example, wireless HD (WiHD), wireless home digital interface (WHDi), or wireless LAN (WiFi). Media signals may be transmitted and received using 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. On the other hand, according to a transmission rate of about 1.8 Gbps, when the HD video data of 1080p (1920 x 1080) is to be transmitted using the WHDi, the transmitter 100 needs to compress and transmit the HD video data.

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 1080p (1920 × 1080) HD video data using the WiFi, the transmitting device 100 must compress and transmit the HD video data, accordingly An image quality deterioration may occur in an image signal received by the reception apparatus 200.

Meanwhile, in addition to the wireless communication standard described above, the transmitting device 100 and the receiving device 200 may use various short range wireless communication standards such as Bluetooth, ZigBee, or binary CDMA. It is possible to wirelessly transmit and receive data according to a media signal using communication standards such as).

According to an embodiment of the present invention, the transmitting device 100 and the 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 transmitter 100 and the receiver 200 may transmit and receive video and audio data using two or more of the above-described wireless communication standards. For example, the transmitter 100 and the receiver may be used. According to the performance, the installation environment, and the resolution of the image, any one of the two or more supported standards may be selected and used for data transmission and reception.

2 is a block diagram illustrating another embodiment of the configuration of the signal transmission and reception system, and the signal transmission and reception system may include a transmission apparatus 100 and a plurality of reception apparatuses 200, 210, and 220.

Referring to FIG. 2, the transmitting device 100 may be connected to the plurality of receiving devices 200, 210, and 220 through a wireless network. That is, the transmitting apparatus 100 may convert the media signal wirelessly transmitted data received from the outside and then wirelessly transmit the data to at least one of the plurality of receiving apparatuses 200, 210, and 220.

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

To this end, the transmitter 100 may include a plurality of wireless transmitters (not shown) corresponding to each of the plurality of receivers 200, 210, and 220, and each of the plurality of wireless transmitters (not shown). May wirelessly transmit video and audio data to a corresponding 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 receiving apparatuses 200, 210, and 220. For example, wireless communication standards for receiving data from each of the plurality of receiving devices 200, 210, and 220 are different from each other according to the performance or the installation location of each of the plurality of receiving devices 200, 210, and 220. May be set.

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

3 is a block diagram illustrating another embodiment of the configuration of the signal transmission and reception system, and description of the same elements as those described with reference to FIGS. 1 and 2 in the signal transmission and 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 receiving apparatus 200 and the display module 310 as described above.

That is, the transmitting apparatus 100 receives a media signal from the outside and wirelessly transmits the media signal to the receiving apparatus 200, and the receiving apparatus 200 provided in the display apparatus 300 displays the wirelessly transmitted data. The signal may be processed and output to the display module 310.

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

4 is a block diagram illustrating a configuration of a transmitting apparatus according to an embodiment of the present invention. The transmitting apparatus 100 illustrated includes an interface unit 110, a first signal processing unit 120, a first control unit 130, and It may include a transmitter 140.

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

The first signal processor 120 may convert the signal received from the interface unit 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 interface unit 110 and separates various channel information therefrom from the data processor (not shown) and the data stream. And an A / V processing unit (not shown) for decoding the extracted video and audio data.

The transmitter 140 wirelessly transmits a signal output from the first signal processor 120 to the receiver 200.

The first control unit 130 controls the overall operation of the transmitting device 100, and more specifically, the interface unit (300) so that a user-desired media signal can be wirelessly transmitted to the transmitting device 200 through the transmitting unit 140. 110, the operations of the first signal processor 120 and the transmitter 140 may be controlled.

5 is a block diagram illustrating a configuration of a receiving apparatus according to an exemplary embodiment of the present invention. The receiving apparatus 100 illustrated includes an antenna 210, a reception sensitivity measuring unit 220, a second control unit 230, and a second control unit. 2 may include a signal processor 240, a display 250, and a user input unit 260.

Referring to FIG. 5, the antenna 210 receives data wirelessly transmitted from the transmitter 100, more specifically, the transmitter 220 of the transmitter 100.

The second signal processor 250 processes and outputs data received through the antenna 210. For example, when the received image data is data encoded by a specific coding scheme, for example, an MPEG encoding scheme, the second signal processor 250 may display the received image data in a form that can be displayed. Can be decoded and output.

The second control unit 230 controls the overall operation of the reception device 200, and for example, the second signal so that the data received through the antenna 210 is converted into a displayable form and then output to the display unit 250. The processor 250 may be controlled.

Meanwhile, as shown in FIG. 3, when the display module 310 is located outside the receiving apparatus 200, the display unit 250 may not be provided in the receiving apparatus 200. The function of 250 may be performed by an external display module 310.

The data transmission / reception performance between the transmitter 100 and the receiver 200 that transmits and receives data wirelessly, that is, the signal reception sensitivity at which the signal transmitted from the transmitter 100 is received by the receiver 200 is a transmitter ( It may be influenced by the distance between the receiver 100 and the receiver 200, the presence of peripheral obstacles, or the directions of the antennas provided in the respective devices.

In particular, when data is transmitted and received between the transmitting apparatus 100 and the receiving apparatus 200 using WiHD having a high frequency band of several tens of GHz, for example, a frequency band of about 60 GHz, the data transmitting / receiving distance is short as about 10 m. In addition, due to the high linearity, the signal reception sensitivity may be affected by surrounding obstacles.

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

According to an embodiment of the present invention, the receiving device 200 is provided with a plurality of antennas to receive a signal transmitted from the transmitting device 100 by using the antenna having the highest signal reception sensitivity among the plurality of antennas, It is possible to transmit and receive data with an optimal signal reception sensitivity between the transmitter 100 and the receiver 200.

Referring to FIG. 5, the receiving device 200 may include a plurality of antennas 210, 211, and 212, and the reception sensitivity measuring unit 220 may include each of the plurality of antennas 210, 211, and 212. The reception sensitivity of the received signal can be measured.

The display 250 may display the measured signal reception sensitivity of each antenna, that is, the signal reception sensitivity of each of the first to nth antennas, on the screen under the control of the second controller 230.

Meanwhile, the second controller 230 controls the antenna having the highest reception sensitivity among the n antennas 210, 211, and 212 displaying the signal reception sensitivity to be selected by the user, and is selected through the user input unit 260. The antennas 210, 211, and 212 may be controlled to receive a signal wirelessly transmitted from the transmitting device 100 using the antenna.

Hereinafter, a signal reception method according to an embodiment of the present invention will be described in more detail with reference to FIGS. 6 to 11.

6 is a flowchart illustrating a signal receiving method according to an exemplary embodiment of the present invention, and the control method shown in FIG. 6 will be described in conjunction with a block diagram showing the configuration of the receiving apparatus 200 shown in FIG. 5. .

Referring to FIG. 6, the reception sensitivity measuring unit 220 measures the signal reception sensitivity of the antennas 210, 211, and 212 provided in the reception device 200 (400).

For example, the antennas 210, 211, and 212 provided in the reception device 200 may be phased array antennas.

The phased array antenna is a system that can individually adjust the phase of the antenna elements to scan the beam radiated from the antenna in a desired direction without mechanically rotating the antenna. The phase array antenna has a phase for controlling the scanning direction of the radiated beam. There are a phase shift scanning method and a time delay scanning method.

On the other hand, the phased array antenna may be connected by a coupling means such as a series of coaxial cables from a plurality of array radiating elements through an active element such as a phase shifter, an attenuator, a low noise amplifier / high power amplifier, and the like to a combiner / divider.

More specifically, the phased array antenna includes a plurality of radiators for receiving a radio signal from a reference antenna, and a plurality of phase shifters for changing a phase of a radio signal received through the plurality of radiating elements. And a power combiner for combining power of each radio wave signal whose phase is changed in the plurality of phase shifters 112.

According to an embodiment of the present invention, the antennas 210, 211, and 212 provided in the receiving device 200 may be installed in different directions as shown in FIGS. 7 and 8, thereby transmitting devices. The signal reception sensitivity of each of the antennas 210, 211, and 212 may be different from each other according to the position of 100.

Referring to FIG. 8, the first antenna 210 and the second antenna 211 may be installed in an upward direction by an angle θ1 with respect to the horizontal axis, and the third antenna 212 may be based on the horizontal axis. It may be installed in a downward direction by a predetermined angle θ2.

Meanwhile, the reception sensitivity measuring unit 220 may measure the received signal strength RSSI of each of the antennas 210, 211, and 212. Alternatively, the reception sensitivity measuring unit 220 may measure the packet error rate (PER) of each of the antennas 210, 211, and 212 to detect the reception sensitivity.

In operation 400, the transmitter 100 may wirelessly transmit a test signal for measuring the signal reception sensitivity to the receiver 200, and the test signal received by each of the antennas 210, 211, and 212. The reception sensitivity may be measured using.

Thereafter, the display 250 displays the measured signal reception sensitivity (step 250). For example, the display 250 may display a signal reception sensitivity of each of the antennas 210, 211, and 212 measured by the reception sensitivity measurement unit 220 on the screen.

More specifically, the display unit 250 may display the measured signal reception sensitivity value, for example, the measured reception signal strength (RSSI) or the packet error rate (PER) itself per antenna, but the Unlike this, the measured signal reception sensitivity may be divided and displayed in several steps so that the user may easily inform.

Referring to FIG. 9, the display 250 may display the measured signal reception sensitivity on each of the antenna 1 210, the antenna 2 211, and the antenna 3 212 on the screen 500.

Meanwhile, on the screen 500, the measured signal reception sensitivity among the antennas 210, 211, and 212 may be divided into a high antenna, a medium antenna, and a low antenna. .

In addition, the display unit 250 may display an antenna, for example, antenna 2211 which is currently connected among antennas 210, 211, and 212 and receiving a signal transmitted from the transmission apparatus 100.

For example, when the measured signal reception sensitivity is received signal strength (RSSI), the antenna having the highest measured value is displayed as' High ', and in the case of the packet error rate (PER), the antenna having the lowest measured value is' High '.

Meanwhile, in the transmission / reception system as illustrated in FIG. 3, the display module 310 may receive the information on the measured signal reception sensitivity from the reception device 200 and display the screen 500 as described above. have.

Thereafter, the user input unit 260 receives one of the antennas 210, 211, and 212 indicated by the reception sensitivity from the user (S420).

Referring to FIG. 9, after checking the signal reception sensitivity of the antennas 210, 211, and 212 displayed on the screen 500, the user may select one of the antennas 210, 211, and 212.

On the other hand, it is preferable that the antenna (210), that is, the antenna having the highest signal reception sensitivity among the antennas 210, 211, and 212 displayed on the screen 500, is selected by the user.

For example, after checking the signal reception sensitivity displayed on the screen 500, the user selects a button corresponding to an antenna to be connected from among the plurality of buttons 510, 520, and 530, and uses the antenna to transmit the transmission device 100. Can be received from the signal transmitted.

More specifically, the user may select the antenna 1 210 by pressing a button 510 corresponding to the antenna 1 210 having the highest signal reception sensitivity.

According to another embodiment of the present invention, the second controller 130 controls the display unit 250 such that the antenna having the highest signal reception sensitivity among the antennas 210, 211, and 212 is selected by the user. can do.

Referring to FIG. 10, when the signal reception sensitivity of the currently connected antenna, that is, the antenna 2 211, is not the highest, the user may confirm the connection change to the antenna having the highest signal reception sensitivity, that is, the antenna 1 210.

That is, the display 250 may display a phrase for requesting a connection change to the antenna 1 210 having the highest reception sensitivity on the screen 500 under the control of the second controller 230.

In this case, when the user selects the 'yes' button 530, the connection to the antenna 1 210 may be changed. On the other hand, when the user selects the 'No' button 531, the signal is continuously received through the current antenna 2 (211) without changing the antenna connection.

On the other hand, referring to Figure 11, when the measurement result is currently connected to the antenna with the highest signal reception sensitivity, the signal reception sensitivity of the antenna currently connected on the screen 500, that is, antenna 1 (210) is the highest (High ) Can be displayed.

When the selection of the antenna having the highest signal reception sensitivity is completed as described above, a signal transmitted from the transmitting device 100 is received using the selected antenna (step 430).

By the method as described with reference to FIGS. 6 to 11, the antenna 210 of the receiving device 200 may be selected to have an optimal signal receiving sensitivity, and thus the receiving device (from the transmitting device 100) may be selected. The quality of the image transmitted and displayed on the screen 200 may be improved.

In addition, the above-described signal receiving method according to the present invention may be stored in a computer-readable recording medium that is produced as a program for execution on a computer, and examples of the computer-readable recording medium include ROM, RAM, CD- ROMs, magnetic tapes, floppy disks, optical data storage, and the like, and also include those implemented in the form of carrier waves (eg, 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 signal transmission / reception system.

4 is a block diagram showing the configuration of a transmitting apparatus according to an embodiment of the present invention.

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

6 is a flowchart illustrating a signal receiving method according to an embodiment of the present invention.

7 and 8 are diagrams illustrating an embodiment of a direction in which antennas provided in a reception device are installed.

9 to 11 illustrate embodiments of a user interface for selecting an antenna having the highest signal reception sensitivity.

Claims (13)

In the method for receiving a signal from a transmitting device connected to a wireless network, Measuring signal reception sensitivity of the plurality of antennas; Displaying the measured signal reception sensitivity; Selecting one of the antennas in which the signal reception sensitivity is indicated; And And receiving a signal from the transmitting device using the selected antenna. The method of claim 1, At least one of the plurality of antennas is a phased array antenna (Phased Array Antenna). The method of claim 1, wherein the measuring step And receiving signal strength indicator (RSSI) for each of the plurality of antennas. The method of claim 1, wherein the measuring step A signal receiving method for measuring a packet error rate (PER) for each of the plurality of antennas. The method of claim 1, And displaying the antenna having the highest received sensitivity among the plurality of antennas. The method of claim 5, wherein said selecting step The signal receiving method of receiving the antenna with the highest reception sensitivity selected by the user. The method of claim 1, At least two antennas of the plurality of antennas are installed in a different direction from each other. The method of claim 1, wherein the receiving step Signal receiving method for receiving a signal from the receiving device using a wireless communication method of any one of WiHD, WHDi and WiFi. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 1 to 8. An apparatus for receiving a media signal from a transmitter connected via a wireless network, the apparatus comprising: A plurality of antennas for receiving a signal from the transmitting device; A reception sensitivity measuring unit measuring signal reception sensitivity of each of the plurality of antennas; A display unit displaying the measured signal reception sensitivity; And And a user input unit configured to select an antenna having the highest received sensitivity among the antennas. The method of claim 10, wherein the plurality of antennas A signal receiving method comprising phased array antennas installed in different directions. The method of claim 10, wherein the reception sensitivity measuring unit And receiving signal strength (RSSI) for each of the plurality of antennas. The display apparatus provided with the receiving apparatus as described in any one of Claims 10-12.

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