KR20110080504A - Method and apparatus for receiving media signal, and displaying apparatus thereof - Google Patents

Abstract

PURPOSE: A signal receiving method and apparatus, and a display device using the same are provided to receive signals from a plurality of transmission devices efficiently using a limited frequency band. CONSTITUTION: A signal receiving apparatus searches a plurality of transmission devices(300). The signal receiving apparatus divides a wirelessly receivable frequency band into a plurality of channels and assigns the divided frequency bands to the searched transmission device(310). Using the assigned channel, the signal receiving apparatus receives a signal from one of the plurality of transmission devices(320).

Description

Method and apparatus for receiving signal, 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 method and apparatus for efficiently receiving signals from a plurality of transmitting apparatuses in a transmission and reception system using a wireless network, and a display apparatus using the same.

A signal receiving method according to an embodiment of the present invention comprises the steps of: receiving a media signal from a plurality of transmitters connected to a wireless network, and searching for a plurality of transmitters; Dividing a wirelessly receivable frequency band into a plurality of channels and allocating the searched transmitting apparatuses; And receiving a signal from the one of the plurality of transmission apparatuses using the assigned channel.

According to an aspect of the present invention, there is provided a reception apparatus including a channel assignment unit configured to receive a media signal from a transmission apparatus connected through a wireless network, and to divide a frequency band that can be wirelessly received into a plurality of channels and to assign the plurality of channels to a plurality of transmission apparatuses; And receiving a signal from the first transmission device by using a channel assigned to a first transmission device among the plurality of transmission devices, wherein at least two channels of the plurality of channels have different bandwidths from each other. .

A display device according to an embodiment of the present invention includes 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 reallocating a channel to a plurality of searched transmission apparatuses according to a preset priority, the receiving apparatus can efficiently receive signals from the plurality of transmission apparatuses using a limited frequency band. In this case, the signal transmission / reception performance of the wireless transmission / reception system can be improved.

1 is a block diagram schematically showing the configuration of a signal transmission and reception system.
2 is a block diagram showing an embodiment of the configuration of a signal transmission and reception system according to an embodiment of the present invention.
3 is a block diagram showing a configuration of a transmitting apparatus according to an embodiment of the present invention.
4 is a block diagram showing the configuration of a receiving apparatus according to an embodiment of the present invention.
5 is a flowchart illustrating an embodiment of a signal receiving method according to the present invention.
6 is a view for explaining an embodiment of a channel allocation method.
7 and 8 illustrate embodiments of a method of displaying a plurality of transmission devices.
9 is a block diagram showing another embodiment of the configuration of the signal transmission and reception system.

Hereinafter, a signal receiving method and apparatus according to an exemplary embodiment of the present invention and a display apparatus using the same 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.

Meanwhile, the transmitting apparatus 100 may include an HDMI or a high-definition multimedia interface (HDMI) terminal, a universal serial bus (USB) terminal, a component terminal, an external input terminal, an RGB terminal, and an antenna to which an external device is connected. Various input terminals such as a 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.

According to an embodiment of the present invention, the transmitting apparatus 100 and the receiving apparatus 200 are HD in real time using wireless home network technology of broadband (WiHD, UWB, IEEE802.11N) according to a wireless HDMI or wireless HD solution. You can send and receive images (1080i or higher). For example, the transmitting apparatus 100 may convert HDMI, which is a standard for HD image transmission, into a wireless packet and transmit the converted packet to the receiving apparatus 200.

More specifically, in the case of the IEEE 802.11N-based wireless communication scheme, the transmission bandwidth is up to 600 Mbps, which is less than 1 Gbps or more uncompressed HD video data, and may require video compression technology.

Meanwhile, when attaching the wireless HD solution as described above to the reception apparatus 200, the transmitter 100 and the reception apparatus 200 should be able to communicate in a standby mode. Otherwise, a separate remote control receiver is required for each of the transmitting device 100 and the receiving device 200, and the cost increases, and the user may operate the remote control more than once for the hot mode of the device. Can be. Therefore, it is preferable to wake up the other device with a remote control signal received from one of the transmitting device 100 and the receiving device 200.

However, while the transmitting device 100 and the receiving device 200 are in the standby mode, the wireless transmitting unit and the receiving unit provided therein should also operate in a power saving mode (PS mode). Otherwise, power consumption may increase, making it difficult to comply with environmental regulations as well as raising the price of power supplies.

Therefore, according to an embodiment of the present invention, when receiving a power off request from a user, the receiving device 200 receiving the request transmits the power off request to the transmitting device 100 to transmit the device ( 100 and the receiving device 200 preferably enter a low power mode (PS mode).

2 is a block diagram illustrating a configuration of a wireless transmission / reception system according to an exemplary embodiment of the present invention. A description of the same configuration as that described with reference to FIG. 1 will be omitted below.

Referring to FIG. 2, the receiving device 200 according to an embodiment of the present invention may be connected to a plurality of transmitting devices 100, 101, and 102 through a wireless network, and thus, the plurality of transmitting devices 100, 101. , 102 may receive a broadcast signal, for example, a video signal and an audio signal.

For example, each of the plurality of transmitting devices 100, 101, and 102 may convert a media signal received from the outside into data capable of wireless transmission according to a specific wireless communication standard, and then wirelessly transmit the received media to the receiving device 200. .

The plurality of transmitting apparatuses 100, 101, and 102 may be a settop box, a PC, a notebook computer, a mobile phone, a PDA, or the like, but the present invention is not limited thereto. And various devices connected to a wireless network to wirelessly transmit a signal.

Meanwhile, a user of the reception device 200 may select a transmission device to receive a broadcast signal from among the plurality of transmission devices 100, 101, and 102, and accordingly, the reception device 200 may transmit a media signal from the selected transmission device. For example, video and audio signals may be wirelessly received.

To this end, the reception device 200 may include a plurality of RF receivers (not shown) corresponding to each of the plurality of transmission devices 100, 101, and 102, and each of the plurality of RF receivers (not shown). May wirelessly receive the video and audio signals with a corresponding transmission 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 transmission apparatuses 100, 101, and 102. For example, the wireless communication standards for receiving data from the transmitting apparatuses 100, 101, and 102 are different from each other, depending on the performance or the installation location of each of the transmitting apparatuses 100, 101, and 102. May be set.

Meanwhile, the receiving apparatus 200 may include a number smaller than the number of the plurality of transmitting apparatuses 100, 101, and 102, for example, one RF receiver (not shown). In this case, the receiving apparatus 200 May receive data using multi-channel communication, that is, using a plurality of channels corresponding to each of the plurality of transmission apparatuses 100, 101, and 102.

According to an embodiment of the present invention, a frequency band capable of transmitting and receiving a radio signal is divided into a plurality of channels between the plurality of transmitting apparatuses 100, 101, and 102 and the receiving apparatus 200. Preferably, the plurality of transmission devices 100, 101, and 102 are allocated according to a preset priority.

A frequency band capable of transmitting and receiving the radio signal may be determined according to a wireless communication method between the plurality of transmitting devices 100, 101, 102 and the receiving device 200. For example, the plurality of transmitting devices 100, When 101 and 102 and the receiving device 200 are connected by the WHDi method, signals may be transmitted and received using a frequency band in a range of 5150 MHz to 5850 MHz.

Meanwhile, the plurality of transmitting apparatuses 100, 101, and 102 may be given priority based on whether the signal is currently being transmitted to the receiving apparatus 200, the resolution of the image to be transmitted, the time selected by the user, or the number of times selected by the user. The ranking may be determined, and the divided channels may be allocated to the plurality of transmission devices 100, 101, and 102 according to the determined priority. In addition, at least two channels of the divided channels may have different bandwidths.

3 is a block diagram illustrating a configuration of a transmitter according to an exemplary embodiment of the present invention. The illustrated transmitter 100 includes an interface unit 110, a first signal processor 120, a first controller 130, and The first RF transceiver 140 may be included. Meanwhile, the transmitting apparatus as shown in FIG. 3 may be any one of the plurality of transmitting apparatuses 100, 101, and 102 illustrated in FIG. 2.

Referring to FIG. 3, the interface unit 110 receives a media signal from the outside, and tunes and tunes a signal corresponding to a broadcast channel selected by a 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 input through the interface 110 and separates various channel information therefrom and the data stream. It may include an AV processor (not shown) for decoding the video and audio data extracted from the.

The first RF transceiver 140 wirelessly transmits a signal output from the first signal processor 120 to the receiver 200. For that purpose, the RF transceiver 120 may include an antenna (not shown) and a converter (not shown), for example, an up converter and a down converter.

The first control unit 130 controls the overall operation of the receiving apparatus 100, and for example, a signal input through the interface unit 110 is wirelessly transmitted to the receiving apparatus 200 by the first RF transceiver 140. Can be controlled to be transmitted.

Meanwhile, the first signal processor 120, the first controller 130, and the first RF transceiver 140 may be configured as a wireless transmitter provided in the transmitter 100, and the wireless transmitter may have a low voltage (LVDS). AV data to be transmitted to the receiving device 200 may be received by using differential signaling (TM) or transition minimized differential signaling (TMDS).

According to an exemplary embodiment of the present invention, the reception device 200 may transmit information on a channel allocated to the transmission device 100, for example, information on a frequency band of the channel, to the transmission device 100. 1 The RF transceiver 140 may receive the channel information and output the received channel information to the first controller 130.

The first controller 130 controls the first RF transceiver 140 according to the input channel information so that the media signal is transmitted to the receiver 200 using the frequency band of the channel allocated to the transmitter 100. Can be sent.

For example, when the transmitting device 100 and the receiving device 200 are connected in a WHDi manner, a channel corresponding to 5180Mhz to 5220Mhz, which is part of a band available in the range of 5150Mhz to 5850Mhz, is allocated to the transmitting device 100. Under the control of the first controller 130, the first RF transceiver 140 may transmit a media signal to the receiving device 200 using the assigned frequency band 5180 MHz to 5220 MHz.

4 is a block diagram illustrating a configuration of a receiving apparatus according to an exemplary embodiment of the present invention. In the illustrated transmitting apparatus 100, a second RF transceiver 210, a second controller 220, and a second signal processor ( 230 and the channel assignment unit 240 may be included.

Referring to FIG. 4, the second RF transceiver 210 may include any one of a plurality of transmitters 100, 101, and 102 connected to a wireless network, for example, a network using a wireless communication standard such as WiHD, WHDi, or WiFi. You can receive a signal from one.

The second signal processor 230 processes and outputs a signal received through the second RF transceiver 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 230 decodes the received image data into a displayable form. Can be output.

The channel allocator 240 may divide a frequency band that can be wirelessly received into a plurality of channels and allocate the same to the plurality of transmission apparatuses 100, 101, and 102.

The second control unit 220 controls the overall operation of the receiving device 200. For example, the second control unit 220 converts a signal received through the second RF transceiver 210 into a displayable form and then returns to a display module (not shown). The second signal processor 230 is controlled to be output.

According to an embodiment of the present invention, the second control unit 220 searches for a plurality of transmission devices 100, 101, and 102 through the second RF transceiver 210, and the searched plurality of transmission devices 100. , 101, 102 information about each, for example, the name and type of a transmitting device, whether a signal is currently transmitted to the receiving device 200, the resolution of the image to be transmitted, a time point selected by the user, or selected by the user. The channel allocator 240 may be controlled to receive a number of times, and to allocate a channel to the plurality of transmission apparatuses 100, 101, and 102 according to the received information.

The receivable frequency band may be determined according to a wireless communication method between the plurality of transmitting apparatuses 100, 101, and 102 and the receiving apparatus 200. For example, the receiving apparatus 200 may be configured in the WHDi scheme. When connected to the transmission apparatuses 100, 101, and 102, the second RF transceiver 210 may receive a signal using a frequency band in a range of 5150Mhz to 5850Mhz.

Meanwhile, the channel allocator 240 determines whether the channel allocator 240 is currently transmitting a signal to the reception device 200, the resolution of the image to be transmitted, the time point selected by the user, or the number of times selected by the user. 101 and 102 may be prioritized, and the divided channels may be allocated according to the sorted order. In addition, at least two channels among the channels allocated to the plurality of transmission apparatuses 100, 101, and 102 may have different bandwidths.

Hereinafter, a signal reception method according to an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 8.

FIG. 5 is a flowchart illustrating an example of a signal reception method according to the present invention, and the signal reception method shown in FIG. 4 will be described with reference to a block diagram showing the configuration of the reception device 200 shown in FIG. 4. .

Referring to FIG. 5, the reception apparatus 200 searches for a plurality of transmission apparatuses 100, 101, and 102 (S300).

For example, the second controller 220 of the receiving device 200 may search for external devices that can be connected to the wireless network through the second RF transceiver 210, and the name and Information about the type can be received.

More specifically, the plurality of transmitting devices 100, 101, and 102 located around the receiving device 200 may each find and occupy a radio frequency band that is not allocated to another device among the frequency bands capable of transmitting signals. The own information may be transmitted to the receiving device 200 by using the channel of the occupied frequency band.

Meanwhile, the second RF transceiver 210 receives information transmitted from the plurality of transmitters 100, 101, and 102, for example, information about an occupied channel, a name, and a type, and receives a plurality of transmitters ( 100, 101, 102).

Thereafter, the channel allocator 240 allocates a channel to the searched plurality of transmitting devices 100, 101, and 102 (S310).

According to an exemplary embodiment of the present invention, the channel allocator 240 is controlled by the second control unit 220 and is a frequency band occupied by the plurality of transmission devices 100, 101, and 102, that is, a channel currently assigned. Can be reassigned according to a preset priority.

For example, the channel allocator 240 divides the receivable frequency band into a plurality of channels, and determines whether the corresponding transmission device is currently transmitting a signal to the reception device 200 or the image of the divided channels. May be reassigned to the plurality of transmission devices 100, 101, and 102 according to the resolution, the time point selected by the user, or the number of times selected by the user.

In addition, the bandwidths of the allocated channels may be different from each other. For example, the higher the priority of the allocated transmission apparatus, the wider bandwidth channel may be allocated.

Hereinafter, an embodiment of the channel reassignment method will be described in more detail by taking a case where the reception device 200 is connected to the plurality of transmission devices 100, 101, and 102 in a WHDi scheme using a 5 Ghz frequency band. Shall be.

Referring to FIG. 6, the reception device 200, and more specifically, the second RF transceiver 210 may use signals from a plurality of transmission devices 100, 101, and 102 using the frequency band in the range of 5150 MHz to 5850 MHz. Can be received.

The searched plurality of transmitting apparatuses 100, 101, and 102 occupy arbitrary empty channels among the 5150 MHz to 5850 MHz frequency bands, respectively, and the channel allocator 240 includes a plurality of transmitting apparatuses 100, 101, and 102. ) Can be re-allocated to a plurality of transmission apparatuses 100, 101, and 102 in the 5150Mhz to 5850Mhz frequency band by sorting according to a preset priority.

On the other hand, the 355Mhz band (b, c) of 5250Mhz ~ 5850Mhz of the frequency bands must coexist with the radar as a DFS (Dynamic Frequency Selection) region, so that between the transmitting device 100 and the receiving device 200 There may be a problem that the transmission and reception of the signal is delayed for a certain time.

Therefore, the remaining non-DFS bands (a, d) except for the DFS band of 5250Mhz ~ 5850Mhz may be allocated to the transmitting device in preference to the DFS band (b, c), accordingly the DFS band (b, The channel included in c) may be allocated last.

Meanwhile, the searched plurality of transmitting devices 100, 101, and 102 may be aligned according to the method described below to determine the priority of channel allocation.

Among the found plurality of transmitting apparatuses 100, 101, and 102, a transmitting apparatus that is transmitting a radio signal to the receiving apparatus 200 may have a first priority.

Also, a transmitting device transmitting a radio signal to another device except the receiving device 200 among the searched transmitting devices 100, 101, and 102 may have a second priority.

Next, the transmission device most recently selected by the user among the searched transmission devices 100, 101, and 102 may have a third priority.

Lastly, for the remaining transmitting devices that do not have the first to third priorities, the number of user selections may be prioritized in order of high order.

In addition, a channel may be allocated to the plurality of transmitting apparatuses 100, 101, and 102 arranged in the above-described order according to the method described below.

For the transmission devices having the first and second priorities among the searched transmission devices 100, 101, and 102, that is, the transmission devices that are transmitting signals to the reception device 200 or another device, are currently allocated. The channel can remain unchanged.

That is, the channel reassignment operation may not be performed with respect to the first and second priority transmission devices, and thus, the first and second priority transmission devices may use the frequency used when connecting to the reception device 200. The signal may be transmitted to the receiving device 200 using the band as it is.

Meanwhile, among the searched transmitting apparatuses 100, 101, and 102, transmitting apparatuses having a priority less than or equal to the third priority, that is, transmitting apparatuses that are not transmitting signals to the receiving apparatus 200 or another apparatus. For each channel, different bandwidth channels may be allocated according to the resolution of the image to be transmitted.

For example, the channel allocator 240 is capable of excluding the available frequency except for a band that is already allocated to the first and second priority transmission apparatuses among the receivable frequency bands, that is, 5150Mhz to 5850Mhz and devices that cannot change the frequency band. You can check the band.

Devices that cannot change the frequency band are interference devices that are located around the receiver 200 and use the frequency band in the 5150Mhz to 5850Mhz range, and may be wireless LAN devices, wireless telephones, or wireless microphones.

That is, as described above, the channel occupied by the transmission apparatuses of the first and second priorities is not changed, and the frequency bands of the neighboring interfering devices are not changeable by the reception apparatus 200. The remaining available frequency bands other than the above may be allocated to transmission devices having a priority less than or equal to the third priority.

More specifically, for transmission devices having a priority less than or equal to the third priority, when the resolution of the image to be transmitted is a reference value, for example, 1080p or more, the bandwidth of the channel may be divided into 40 MHz and allocated. If is less than the reference value (1080p) can be set to the bandwidth 20Mhz.

Meanwhile, for transmission devices having a priority less than or equal to the third priority, a center frequency of channels allocated in the sorted order may be assigned.

For example, when there is a frequency band empty in the non-DFS bands (a, d) by the bandwidth allocated to the corresponding transmitting apparatus, that is, a band not allocated to another transmitting apparatus, the empty band is allocated to the transmitting apparatus. The channel can be allocated in correspondence with.

In addition, when the non-DFS bands (a, d) are allocated and occupied by the transmitting apparatuses, the DFS bands (b, c) may be distributed to the remaining transmitting apparatuses.

On the other hand, if the frequency band corresponding to the bandwidth of the channel to be allocated to the transmission device no longer remains in the 5150Mhz ~ 5850Mhz frequency band, the channel may not be allocated to the corresponding transmission device, for example, the transmission device is a standby list May be specified.

When the channel allocation is completed as described above, the second RF transceiver 210 receives a signal from the transmitting apparatus 100 using the allocated channel (step 320).

For example, when the user selects the second transmission device 101 as a transmission device to receive a signal, the second control unit 220 uses the second transmission device (the second transmission device 101) using a channel assigned to the second transmission device 101. The second RF transceiver 210 may be controlled to receive a signal transmitted from the 101.

According to another embodiment of the present invention, the receiving device 200 may display information on the searched plurality of transmitting devices (100, 101, 102), a display for displaying an image or text, etc. for it It may include a module (not shown).

The second controller 220 uses information about the plurality of transmitters 100, 101, and 102 received through the second RF transceiver 210, for example, information on the name and type of each transmitter. Thus, the display module (not shown) may be controlled to display a plurality of transmission devices 100, 101, and 102 on the screen.

Referring to FIG. 7, the plurality of transmission devices 100, 101, and 102 found by the reception device 200 may include a settop box, a cell phone, and a personal computer (PC). In addition, information 410, 420, and 430 for each of the transmitting devices may be displayed on the screen 400.

That is, on the screen 400, the name (Tx 1) and type (Settop box) of the first transmitting device 100, the name (Tx 2) and type (Cell phone) of the second transmitting device 101, and third The name Tx 3 and the type PC of the transmitting device 102 may be displayed.

Meanwhile, the user may select any one of the transmission device lists 410, 420, and 430 displayed on the screen 400 to allow the reception device 200 to receive a media signal from the corresponding transmission device.

In addition, as shown in FIG. 7, icons corresponding to each of the plurality of transmitting devices 100, 101, and 102 may be displayed together on the screen 400, and the user may transmit the corresponding icon using the image of the icon. The device can be easily identified.

According to another exemplary embodiment of the present invention, information about external devices connected to the receiving device 200 by wire as well as the plurality of transmitting devices 100, 101, and 102 may be displayed on the screen 400. .

Referring to FIG. 8, a plurality of transmitting apparatuses 100, in which information 440 and 450 of external devices connected to the receiving apparatus 200 are wirelessly searched using wired 'HDMI' and 'Composite' terminals, respectively. The information 400 may be displayed on the screen 400 together with the information 410, 420, 430 about the 101, 102.

On the other hand, a plurality of transmission devices (100, 101, 102) may be displayed a letter or image to indicate that the device is connected wirelessly, for example, as shown in Figure 8 above the icon of the corresponding transmission device 'W' may be displayed.

In addition, when there is a transmitting apparatus to which a channel is not allocated among the plurality of transmitting apparatuses 100, 101, and 102 searched as described above, the transmitting apparatus may be displayed to be distinguished from other transmitting apparatuses.

For example, a channel to which 'PC' is allocated does not exist among the searched transmission apparatuses 100, 101, and 102, and thus may be designated in the standby list. In this case, the standby list is illustrated in FIG. 8. The information 430 on the 'PC' may be displayed on the screen 400 in a different color from other transmitting devices, for example, gray.

Accordingly, the user may recognize that the 'PC' is in the waiting list by checking the distinguished and displayed information 430. When selecting the 'PC', the user may take a long time to reassign the frequency for wireless connection. It can be seen that a certain time may be delayed for reception.

On the other hand, the display module (not shown) as described above outside the receiving device 200 and the display module (not shown) may not be provided inside the receiving device 200, in this case, the display module (not shown) May be performed by an external display module (not shown).

FIG. 9 is a block diagram illustrating another embodiment of the configuration of the signal transmission and reception system. A description of the same elements as those described with reference to FIGS. 1 to 8 of the signal transmission and reception system illustrated in FIG. 9 will be omitted below. .

Referring to FIG. 9, the display apparatus 500 according to an exemplary embodiment of the present invention may include the receiving apparatus 200 and the display module 510 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 500 displays the wirelessly transmitted data. The signal may be processed and output to the display module 510.

The display module 510 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).

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 upgrade method can be easily inferred by programmers in the art to which the present invention belongs.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, as well as such modifications.

It should not be understood individually from technical ideas or prospects.

Claims (20)

In the method for receiving a media signal from a transmitting device connected to a wireless network,
Searching for a plurality of transmitting devices;
Dividing a wirelessly receivable frequency band into a plurality of channels and allocating the searched transmitting apparatuses; And
And receiving a signal from the one of the plurality of transmitting devices using the assigned channel. The method of claim 1,
At least two channels of the plurality of channels have different bandwidths from each other. The method of claim 1, wherein the assigning step
And a method for allocating the channel based on whether the transmitting device is transmitting a signal to a receiving device. The method of claim 1, wherein the assigning step
The signal receiving method of allocating the channel based on the resolution of the image transmitted by the transmitting device. The method of claim 1, wherein the assigning step
And a method for allocating the channel based on a time point at which the transmitting device is selected by a user. The method of claim 1, wherein the assigning step
And the transmission device allocates the channel based on the number of times selected by the user. The method of claim 1, wherein the assigning step
And transmitting the information on the allocated channel to the transmitting device. The method of claim 1, wherein the assigning step
A signal receiving method which does not change the frequency band of a channel allocated to a first transmitting device transmitting a signal to a receiving device among the transmitting devices. 8. The method of claim 7, wherein the assigning step
Identifying available frequency bands excluding the bands allocated to the first transmitting apparatus and a device in which the frequency band cannot be changed among the frequency bands capable of being wirelessly received; And
Dividing the available frequency band and allocating the available frequency bands to remaining transmission apparatuses except for the first transmission apparatus among the searched transmission apparatuses. 10. The method of claim 9,
The apparatus which cannot change the frequency band includes at least one of a wireless LAN device, a wireless telephone, and a wireless microphone using the frequency band. 10. The method of claim 9,
The signal receiving method of allocating the channel to each of the transmission apparatuses other than the first transmission apparatus according to the resolution of the image to be transmitted. The method of claim 11,
And a second transmission device having a resolution greater than or equal to a reference value of the transmitted image is wider than a third transmission device having a resolution less than the reference value. 10. The method of claim 9, wherein the assigning step
The signal receiving method of allocating a dynamic frequency selection (DFS) band of the frequency band of the wireless reception last. 10. The method of claim 9,
At least one of the other transmitting devices except for the first transmitting device has no allocated channel. The method of claim 1,
And displaying the retrieved transmitting devices. The method of claim 15, wherein the displaying step
Signal receiving method for displaying icons corresponding to each of the searched transmission apparatuses. The method of claim 14 and 15, wherein the displaying step
And a transmitter for distinguishing the transmitter from other transmitters without displaying the allocated channel. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 1 to 17 on a computer. An apparatus for receiving a media signal from a transmitter connected via a wireless network, the apparatus comprising:
A channel allocator for dividing a radio frequency-receivable frequency band into a plurality of channels and allocating the plurality of transmission apparatuses to a plurality of transmission devices; And
Receiving a signal from the first transmission device by using a channel assigned to a first transmission device among the plurality of transmission devices,
At least two channels of the plurality of channels have different bandwidths from each other. A display device comprising the receiving device according to claim 19.

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