KR100731383B1 - Display system and wireless transmission/reception method for the same - Google Patents

Abstract

According to an exemplary embodiment of the present invention, a display system includes a memory for storing one or more setting channels, an FM detector for detecting an over-the-air FM channel in a state in which a selection channel is selected among the setting channels, and a selection without the over-air FM channel among the selection channels. A control unit for selecting a channel as a use channel, a second control signal communication unit for transmitting information on the use channel, and an FM transmitter controlled by the control unit to set a frequency band to the use channel to transmit an acoustic signal Display devices; And a first control signal communication unit for receiving information of the use channel transmitted from the second control signal communication unit, a control unit for processing information of the use channel received through the first control signal communication unit, and control of the control unit. By the receiving channel is set to the use channel by the FM receiver for receiving the sound signal, and a remote controller including a speaker out port for outputting the sound signal.

According to the present invention, the user can set and use the interlocked frequency only by a simple operation, there is an advantage that the convenience of the user and the reliability of the product is further increased.

Display system, FM transmitter

Description

Display system and wireless transmission / reception method for the same

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a usage form of a display system according to the spirit of the present invention.

2 is a block diagram of a display system in accordance with the teachings of the present invention.

3 is a front view of the display apparatus.

4 is an OSD screen displayed in the process of selecting a channel to use.

5 is a flowchart illustrating a method for wireless transmission and reception of a display system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: display system 2: remote controller

3: audio system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display system, and more particularly, to a display system and a wireless transmission / reception method of a display system, which allow a sound to be wirelessly heard through an external sound system among images and sounds reproduced after being received by a display device. It is about. More specifically, when a sound signal is transmitted to an external sound system by an FM transmitter among various types of video / audio signals such as an RF signal received from a display system, The present invention relates to a display system and a wireless transmission / reception method of a display system, in which an appropriate transmission / reception frequency is set to promote user convenience and satisfaction.

In general, an FM transmiter means that when a sound reproduction system, such as MP3-, and an external sound system, such as car audio, are separated, a sound signal read out from the sound reproduction system is wirelessly separated from the external sound. It is a device that enables the user to listen to the sound in a more convenient and good environment by passing it to the system.

On the other hand, since such an FM transmitter is a device that is used wirelessly, a specific FM frequency is used, and the frequency used in the FM transmitter is a frequency of a certain band only for each country or region according to the international agreement on the use of radio frequencies. It is intended to be used. In addition, in general radio broadcasting, the frequency allocated to each country is divided and used. Therefore, the frequency band used for the wireless communication of the FM transmitter has a high risk of interference with the general radio broadcasting frequency band.

In order to solve this problem, it is common to set up a plurality of usable frequency channels for each frequency in which an FM transmitter is used, and different frequencies are used for wireless communication depending on the position of the equipment. However, there is a problem that the process of selecting a specific frequency from among a plurality of different frequencies available is too difficult for the consumer.

As a conventional application to solve this problem, it is also possible to pre-set the FM transmitter to a frequency band that can avoid the radio frequency band used in a particular region, but the radio frequency signal is not only the specific frequency used but also the original. This method is also undesirable because it contains signals from other frequency bands that interfere with the frequency of the signal. In particular, devices that are placed inside a building, such as a display system, are placed inside a building, especially indoors, so that interference signals between radio signals, reflected signals from buildings, and electromagnetic signals from other electronic devices placed around the device are many. It is a reality that occurs. As a result, it is problematic to arrange for devices placed inside a building, such as a display system, to transmit and receive sound signals wirelessly using a specific radio frequency.

The present invention has been proposed to solve the above problems, and a wireless transmission and reception method of a display system and a display system that allows a user to more conveniently reproduce and listen to an acoustic signal of a display device using an external sound system other than the display device. The purpose is to propose.

In addition, an object of the present invention is to propose a wireless transmission / reception method of a display system and a display system that enable a user to conveniently set and use a frequency at which a display device and an external sound system interoperate.

In addition, by allowing the user to set and use the interlocked frequency by a simple operation, and to easily change the frequency when the interference occurs for a specific frequency, the display system that further enhances the user's convenience and product reliability, and An object of the present invention is to propose a wireless transmission / reception method of a display system.

The present invention for achieving the above object is a display device; And a remote controller for outputting a sound signal transmitted from the display device, wherein the display device comprises: a memory in which one or more setting channels are stored; An FM detector for detecting an airwave FM channel in a state of being set as a selection channel selected from the setting channels; A control unit for selecting a selection channel without the airwave FM channel among the selection channels as a use channel which is a frequency band for directly transmitting the sound signal to the remote controller; A second control signal communication unit for transmitting the information of the use channel to the remote controller; And an FM transmitter controlled by the controller and configured to transmit a sound signal by setting a frequency band to the use channel, wherein the remote controller is configured to receive information on the use channel transmitted from the second control signal communication unit. 1 control signal communication unit; A controller which processes information of the utilization channel received through the first control signal communication unit; An FM receiver configured to receive the sound signal by setting a reception channel to the use channel under control of the controller; And a speaker out port for outputting the sound signal, wherein a channel that does not interfere with airwaves is selected as the use channel among the set channels, and the sound signal is transmitted from the display device to the remote controller through the use channel. A display system is transmitted to enable the remote controller to listen to the sound signal.

According to another aspect of the present invention, there is provided a method for wireless transmission and reception of a display system, the method comprising: setting, on a display device side, a selection channel selected from one or more setting channels; Setting a selection channel having no over-the-air FM signal among the selection channels as a use channel; Transmitting information of the use channel to a remote controller; Setting the use channel as a reception channel of an FM receiver embedded in the remote controller; And transmitting and outputting an acoustic signal of the display device to the remote controller by the FM transmitter.

According to the present invention as proposed, the user can more conveniently perform wireless transmission and reception between the display device and the external acoustic system, and can obtain an advantage of increasing user convenience.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a use form of a display system according to the spirit of the present invention.

Referring to FIG. 1, the display system according to the present invention includes a display system 1 for receiving an RF signal, which is a broadcast signal transmitted from a broadcasting station, and transmitting an acoustic signal wirelessly, for example, a signal of FM frequency. An audio system 3 or a remote controller 2 is included as an external sound system that receives signals transmitted wirelessly from the display system 1 and outputs sound.

In addition, the audio system 3 and the remote controller 2 have a radio frequency receiver and a built-in speaker or speaker out port, and these devices reproduce sound signals transmitted from the display system. Of course, the speaker may be built in the display system 1, so that when the sound signal is not transmitted wirelessly, the display system may automatically reproduce the sound.

In addition, the display device 1 may be exemplified as a television to which an RF signal is input as a broadcast signal, but is not limited thereto, such as a DVD player or a VCR or a set-top box or a PC or a game machine or a camcorder that generates an audio signal. The display device may be any display device to which video and audio signals output from various devices are input.

In addition, after the predetermined frequency is set in the display device 1 by the remote controller 2, when the audio system 3 is set to a specific frequency transmitted from the display device 1, the remote controller 2 And it is possible to obtain the advantage that the sound can be received at the same time through the audio system (3).

Hereinafter, the configuration of the display system and the external acoustic system in which the frequency of the wireless acoustic signal transmitted from the display system is adjusted will be described in detail.

2 is a block diagram of a display system according to the spirit of the present invention.

Referring to FIG. 2, the display system according to the present invention includes a display device 1 and a remote controller 2.

First, the display device 1 includes an RF signal antenna 24 for receiving a broadcast signal from a broadcasting station, a tuner 11 for extracting a desired signal from the RF signal received from the RF signal antenna 24, and the tuner. Among the RF signals extracted in (11), an audio signal output unit for outputting an audio signal, an image signal output unit for outputting an image signal, and a controller (microprocessor) 17 are further included.

The audio signal output unit includes an audio processor 12 for processing the sound signal selected by the tuner 11, an amplifier 13 for amplifying the sound signal processed by the audio processor 12, and the amplifier ( An internal speaker 14 is included to cause the signal amplified by the amplifier 13 to be output by physical vibration. In addition, an FM transmitter 15 for transmitting a radio signal at an FM frequency when the radio signal is selected to be transmitted by the sound reproducing system is included. The FM transmitter 15 is a part for transmitting to the external sound system through the FM frequency which is an acoustic signal, and the control unit 17 controls the transmission FM frequency channel.

The video signal output unit is a video processor 20 for processing the video signal received from the tuner 11 under the control of the controller 17, and the video signal processed by the video processor 20 A back-end system 21 for performing post-processing such as deflection and scanning, and a screen 22 for visually displaying the output image signal are included.

In addition, a user interface 23 for allowing a user to adjust the function of the sound reproducing system, and an OSD screen on which the user's operation status is displayed on the screen 22 when the interface 23 is operated. OSD processing unit 27 for processing a, and a memory unit 19 for storing a plurality of information necessary for the operation of the sound reproduction system is included.

In addition, an FM antenna 25 for detecting the airwave FM channel at the position where the display device 1 is placed, and an FM detector 18 for detecting the FM signal received from the FM antenna 25 is included.

On the other hand, the remote controller 2 is an FM receiver 62 for receiving the FM signal transmitted from the FM transmitter 15, a control unit (microprocessor, micro processor) 61 for controlling the external sound system as a whole, information And a speaker out port 64 to which a signal received from the FM receiver 62 is output under the control of the controller 61. A separate earphone may be further connected to the speaker out port 64 to listen to sound, or a speaker may be directly connected.

The operation of the wireless acoustic transmission and reception system as proposed will be briefly described.

First, the sound signal selected by the tuner 11 while the power is applied is output through the sound signal output unit, and the video signal is output through the video signal output unit. At this time, the sound signal is output through the internal speaker 14. However, if the user wants to receive the acoustic signal wirelessly and output it to the remote controller 2 and / or the audio system 3 as a separate external sound system, the display device 1 through the interface unit 23. To operate the operation state.

In brief, the operation of the interface unit 23 allows the user to operate the interface unit 23 to operate the control unit 17 so that the optimal channel is searched by the display device 1. The channel information determined to be the optimal transmission / reception frequency is transmitted from the display device 1 to the remote controller 1 so that both are synchronized. In this state, the acoustic signal is wirelessly transmitted while the transmission frequency of the FM transmitter 15 is set to the optimum frequency. In addition, the external sound system receives the transmitted radio signal to output sound.

As such, in order to transmit and receive a control signal between the display device 1 and the remote controller 2, a second control signal communication unit 16 is formed in the display device 1, and the remote controller 2 The first control signal communication unit 63 is formed. Each control signal communication unit 16 and 63 is connected to the control unit 17 and 61 of each system so that control signals transmitted and received are transmitted and processed.

In addition, the communication of the control signal communication unit 16, 63 may be performed according to various communication standards, for example, may be an IR module for performing infrared communication, may be a Bluetooth module, IEEE802.11b It may be a module. However, it is a matter of course that the wireless communication is performed between the two so that the control signal can be transmitted between the two.

Hereinafter, a process of searching for an optimal channel will be described.

For simplicity, a setting channel stored in the memory 19 of the display device 1 is set in the FM detector 18, and it is determined whether the setting channel is occupied by another over-the-air broadcasting. At this time, if it is determined that the channel is already occupied by the airwave broadcasting, another channel is selected again. If it is determined that it is not occupied by airwave broadcasting, the channel is determined to be an available channel. The FM transmitter 15 is operated, and the information of the use channel is transmitted to the remote controller 2 so as to be set as a reception frequency of the remote controller 2.

A process of setting up an access channel and performing wireless transmission / reception of a display system from a user's point of view will be described.

3 is a front view of a display device, and FIG. 4 is an OSD screen displayed during a process of selecting a use channel.

3 and 4, the display device 1 is provided with a screen 41 for displaying an operation state and a function button unit 42 provided with a plurality of function buttons. The function button unit operates the interface unit 23 so that the operating state of the display device 1 is manipulated.

Looking at the function button in more detail, in addition to the general function of the display device to turn on / off button 43, the FM reception function is started, and the on / off button 43 after the operation of the setting channel is changed to A channel change button 45 and a transmission button 44 for transmitting the information of the setting channel to the remote controller 2 after determining that the setting channel is an appropriate channel are included.

The operation of the display device will be described based on the operation of the function button unit.

First, when the user manipulates the on / off button 43, the channel information that can be set is displayed. In this case, the user can change the setting channel by using the channel change button 45. The channel set in the current state is set in the FM detector 18 under the control of the control unit 17, so that the FM broadcast is received by the display device 1 and output through the internal speaker 14.

If it is satisfactory because there is no airwave broadcasting in the current setting channel, the current setting channel is selected as the use channel, and the controller 17 stores the current setting channel as the use channel in the memory 19, and the FM The use channel is also set in the transmitter 15 so that an acoustic signal is transmitted to the use channel. Of course, if it is not satisfactory due to the fact that there is an airwave broadcasting in the current setting channel, the channel changing button 45 is operated to change the setting channel. The change of the setting channel may be performed continuously until a satisfactory channel is found.

After the use channel is obtained, information on the current use channel is transmitted to the remote controller 2 through the second control signal communication unit 16 under the control of the control unit 17 by pressing the transmission button 44. The transmitted information of the used channel is received by the first control signal communication unit 63, then transferred to the control unit 61 of the remote controller 2 and stored in the memory 65 of the remote controller 2, the FM receiver At 62, a channel is used.

Thereafter, the acoustic information of the display device 1 is transmitted from the FM transmitter 15 through the use channel, received by the FM receiver 62 of the remote controller 2, and output through the speaker out port 64 so that the user You can listen to the sound.

On the other hand, the setting channel is stored in advance in the remote controller 2 and the display device 1, the control signal communication unit 16, 63 is not the information of the channel itself, but the address information of the memory in which the channel is stored By transmitting the information of the set channel to be transmitted stably. 4 shows information of a setting channel and an address thereof.

Referring to FIG. 4, seven cases of addresses are displayed, and frequency information of a setting channel is stored in each address. Of course, the number and frequency of the set channels may vary depending on the specific usage region and the specifications of the device.

Hereinafter, a wireless transmission / reception method of the display system according to the present invention will be described in detail with reference to the configuration of the display system as described.

5 is a flowchart illustrating a method for wireless transmission and reception of a display system according to the present invention.

Referring to FIG. 5, first, an image and a sound are output from the display device 1 (S1), and it is determined whether the sound is reproduced through the FM transmitter 15 (S2), and the FM transmitter 15 is used. If it is determined that the sound is not, the sound is output through the internal speaker 14 of the display device 1 (S9).

If it is determined that the FM transmitter 15 is used, the process of selecting the use channel in the display device 1 is further performed. Hereinafter, the process of selecting the use channel will be described in detail.

First, a selection channel arbitrarily selected from the set channels is selected (S3), and it is determined whether or not there is airwave broadcasting in the selection channel (S4). The selecting of the selection channel may include setting the FM channel to the FM transmitter 15 after the controller 17 calls an arbitrary configuration channel among one or more configuration channels stored in the memory 19. Is performed. Further, it is further determined whether or not there is over-the-air broadcasting in the selected channel, and if there is over-the-air broadcasting, a process of performing a new setting channel as the selected channel (S10) is performed.

Here, whether or not there is an airwave broadcasting in any selected channel, allows the airwave broadcasting received through the FM transmitter 15 to be output through the internal speaker 14, and whether or not noise is included in the output sound. It can be determined as. As another case, the noise included in the currently selected channel is measured so that when the noise is detected, it may be determined that there is an over-the-air broadcasting.

Meanwhile, the process of changing the selected channel may be adjusted by the user pressing the channel change button 45.

If it is determined in step S4 that there is no airwave in the current selection channel, the display device 1 causes the current selection channel to be selected as the use channel (S5). Naturally, the utilization channel includes information of a specific frequency band used for wireless transmission and reception between the FM transmitter 15 and the FM receiver 62. The information on the selected use channel is stored in the memory 19 of the display device 1, and then the information on the use channel is transmitted from the display device 1 to the remote controller 2 (S6). . In this case, the information of the use channel may be performed by transmitting address information (see FIG. 4) in which frequency band information of the use channel is stored. In this case, the transmission of the use channel information may be performed after the transmission button 44 is pressed after the use channel is determined.

When the use channel information is received from the remote controller 2, the control unit 61 stores the address information of the use channel in the memory 65, and after calling the frequency band information contained in the corresponding address, the FM The channel of the receiver 62 is set to the frequency band of the use channel, and then the FM receiver 62 is operated by the use channel (S7).

In this state, the FM transmitter 15 transmits a sound signal to the FM receiver 62 through the use channel, and the remote controller 2 receives the signal and reproduces the sound through the speaker out port 64. Done.

On the other hand, the acoustic signal transmitted from the FM transmitter 15 can be transmitted not only to the remote controller 2 but also to the audio system 3, in which case, the frequency of the audio system 3 may be set as a use channel. In this way, the plurality of devices can listen to the sound.

The embodiments of the present invention as described are not limited to those presented, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments within the scope of the same idea, but this is also included in the present invention. Will be.

For example, the user operates the display device 1 to select an arbitrary setting channel as the selection channel, and the information of the selection channel is transmitted from the display device 1 to the remote controller 2 so as to be set. Subsequently, in this state, it is determined whether or not the acoustic signal transmitted from the FM transmitter 15 is correctly output from the remote controller 2, and the current selected channel is correctly received if it is properly received without deteriorating the reception sensitivity caused by airwaves. May be set to the use channel, and if not, the process of changing the selection channel may be continued until the use channel is selected.

In addition, the reception sensitivity of the over-the-air FM channel detected by the FM detector 15 measures the strength of the carrier included in the received signal. When the strength of the carrier is large, the current selected channel is occupied by the over-the-air FM channel. You can judge. In this case, it is natural that the process of setting another configuration channel as the selection channel is further performed.

According to the present invention, there is an advantage that a user can conveniently set and use a frequency band in which a display device and an external sound system are interworked.

In addition, by allowing the user to set and use the interlocked frequency by a simple operation only, when the interference occurs for a particular frequency to conveniently change the frequency to use, there is an advantage that the user's convenience and product reliability is further increased. .

Claims (6)

Display devices; And Remote controller for outputting a sound signal transmitted from the display device, The display device, A memory in which one or more setting channels are stored; An FM detector for detecting an airwave FM channel in a state of being set as a selection channel selected from the setting channels; A control unit for selecting a selection channel without the airwave FM channel among the selection channels as a use channel which is a frequency band for directly transmitting the sound signal to the remote controller; A second control signal communication unit for transmitting the information of the use channel to the remote controller; And An FM transmitter is controlled by the controller to set a frequency band to the use channel to transmit an acoustic signal. In the remote controller, A first control signal communication unit which receives the information of the use channel transmitted from the second control signal communication unit; A controller which processes information of the utilization channel received through the first control signal communication unit; An FM receiver configured to receive the sound signal by setting a reception channel to the use channel under control of the controller; And A speaker out port for outputting the sound signal is included, A channel which does not interfere with airwaves among the set channels is selected as the use channel, and the sound signal is transmitted from the display device to the remote controller through the use channel, so that the sound signal can be listened to by the remote controller. Display system. The method of claim 1, And an audio system for receiving the acoustic signal of the FM transmitter. The method of claim 1, And the information of the use channel is an address of the memory in which specific frequency information is stored. The method of claim 1, The display device further comprises a transmission button for transmitting the information of the use channel to the remote controller. At the display device side, setting to a selection channel selected from one or more setting channels; Setting a selection channel having no over-the-air FM signal among the selection channels as a use channel; Transmitting information of the use channel to a remote controller; Setting the use channel as a reception channel of an FM receiver embedded in the remote controller; And And transmitting and outputting a sound signal of the display device to the remote controller by the FM transmitter. The method of claim 5, The information of the use channel is a wireless transmission and reception method of a display system is transmitted to a remote controller according to the user's instructions.

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