KR101253163B1 - A receiver for broadcasting - Google Patents

Abstract

According to the present invention, at least two broadcast signal processing units for receiving a broadcast signal and restoring an original signal, and a control unit for controlling the at least two broadcast signal processing units to output the restored broadcast signal to a main video device and at least one sub video device. And a wireless transceiver for transmitting the restored broadcast signal to the at least one sub video device according to the control signal of the controller, and a broadcast signal outputting the restored broadcast signal from the main video device according to the control signal of the controller. It provides a broadcast receiver comprising a broadcast signal output unit characterized in that it comprises a unit.

Accordingly, according to the present invention, since a main video device for processing a broadcast signal and at least one sub video device for outputting a broadcast signal under the control of the main video device are provided, a plurality of broadcast receivers can be used at a low cost. There is.

In addition, by using a plurality of video devices in one system, a large amount of information can be provided more efficiently.

Description

A receiver for broadcasting}

1 is a diagram illustrating the configuration of a main video device among broadcast receivers according to the present invention;

2 is a diagram illustrating an embodiment of a sub video device of a broadcast receiver according to the present invention;

3A is an exemplary diagram of switching modes of a main video device and a sub video device

3B illustrates an embodiment in which the main video device and the sub video device are in a cooperative mode.

Description of the Related Art [0002]

10: first broadcast signal processor 20: second broadcast signal processor

30: control unit 40: broadcast signal output unit

50: wireless transceiver 60: storage unit

70: sub controller 80: wireless transceiver

90: broadcast signal output unit

The present invention relates to a broadcast receiver and a broadcast receiving method, and more particularly, to a broadcast receiver and a broadcast comprising a main video device processing a broadcast signal and a sub video device responsible for outputting a broadcast signal processed by the main video device. It is about how to receive.

Examine the composition of a typical digital television.

The digital broadcast signal transmitted from the antenna is received by the digital television tuner, demodulated in a demodulator, and the demodulated signal is separated into a video and audio signal in a demultiplexer.

The separated signal is decoded into the original video and audio through a decoder so that the video is made to the video format designated by the video encoder and displayed to the user.

The voice is made of the audio specified by the audio converter and made available to the user.

As such general-purpose digital television systems are generally fixed and used at specific positions, there is an inconvenience that a user must always move to a fixed position in order to watch television.

In addition, such a broadcast signal processing system is essentially required for each broadcast receiver. The broadcast signal processing system increases manufacturing cost and takes up space. However, when the broadcast signal does not have to be processed independently, it is often unreasonable to have the broadcast signal processing system independently.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention includes a main video device having a broadcast signal processing system and a sub video device wirelessly connected to output a broadcast signal processed by the main video device. A broadcast receiver and a broadcast signal processing method are provided.

Another object of the present invention is to provide a broadcast receiver and a broadcast signal processing method for wirelessly connecting a main video device and a sub video device to output an additional video of the main video device to the sub video device.

In order to achieve the above object, the present invention provides at least two broadcast signal processing unit for receiving a broadcast signal and restoring the original signal, and the broadcast signal restored in the at least two broadcast signal processing unit and at least one sub-image. A control unit for controlling to output to the device, a wireless transceiver for transmitting the restored broadcast signal to the at least one sub video device according to the control signal of the controller, the restored broadcast from the main video device in accordance with the control signal of the controller It provides a broadcast receiver comprising a broadcast signal output unit for outputting a signal.

The broadcast signal processor is a tuner for receiving a broadcast signal modulated, coded and transmitted in a multiplexed manner for communication, a demodulator for reproducing the broadcast signal modulated and received by the tuner as an original signal, and separating the multiplexed composite signal. And a demultiplexer for reconstructing the original signal or a group of signals, and a decoder for converting the encoded received signal into an analog signal.

The controller may switch the connection mode between the main video device and the sub video device to one of an independent mode and a linked mode.

When the connection mode is switched to the independent mode, the controller controls the broadcast signal processor to control the broadcast signal output of the main video device and the sub video device separately.

When the connection mode is switched to the cooperative mode, the control unit controls to use the main video device as the output of the main screen and the sub video device as the output of the sub-screen.

The main screen outputs a main video of a broadcast, and the sub screen separates and outputs broadcast content existing in the same channel as the received broadcast signal.

The broadcast content existing in the same channel may be at least one of data information, broadcast program information, and data broadcast.

The wireless transceiver may transmit a control signal of the controller to the sub video device, and receive an input signal of the sub video device.

The sub video device may include a sub controller which controls an output according to a control signal of the main video device, an output unit that outputs a broadcast signal according to a control signal of the sub controller, a control signal of the main video device, and receives the sub signal. According to a control of the control unit provides a broadcast receiver comprising a wireless transceiver for transmitting a control signal of a sub video device to the main video device.

Accordingly, the present invention provides a main video device that processes a broadcast signal and at least one sub video device that outputs a broadcast signal according to the control of the main video device, thereby enabling a plurality of broadcast receivers to be used at a low cost. It works.

In addition, by using a plurality of video devices in one system, a large amount of information can be provided more efficiently.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The broadcast receiver according to the present invention includes a main video device and a sub video device.

The main video device refers to a video device including a plurality of broadcast signal processing systems, and the sub video device refers to a video device that receives a broadcast signal processed by the main video device and outputs a broadcast signal.

In the main video device, the broadcast signal processing system is provided with the number of tuned channels.

1 illustrates an embodiment of a main video device configuration among broadcast receivers according to the present invention.

Referring to FIG. 1, a main video device of a broadcast receiver according to the present invention includes a broadcast signal processor 10 and 20, a controller 30, a broadcast signal output unit 40, and a wireless transceiver 50.

The broadcast signal processing units 10 and 20 are configured in plural and are required as many as the number of output channels, but the present invention does not limit the number. However, in this drawing, two broadcast signal processing units are denoted, and one sub video device is provided. However, this is only an embodiment, and the present invention is not limited to the description of the drawings.

The first broadcast signal processor 10 includes a tuner 11, a demodulator 12, a demultiplexer 13, a decoder 14, a video encoder 15, and an audio converter 16 from a broadcast station. A block is processed to output a received broadcast signal.

The tuner 11 receives a broadcast signal that is modulated for communication, encoded, and transmitted in a multiplexed manner. Since the tuner receives and tunes one channel frequency band, in order to tune an independent channel, as many tuners are required as tuning channels. That is, the broadcast signal tuned by the tuner requires a broadcast system to be converted to be output.

The demodulator 12 reproduces the broadcast signal modulated by the tuner 11 as an original signal. When a signal is transmitted to a remote location, an amplitude frequency or a position of the carrier is changed to be included in an electromagnetic wave that is easy to propagate a space or a transmission line, that is, a carrier wave, which is called a modulated wave. A demodulator is a device for extracting an original signal from such a modulated wave.

The demultiplexer 13 separates the multiplexed complex signal and restores the original signal or a group of signals.

The decoder 14 converts the encoded received signal into an analog signal. In this case, since the changed analog signal is the same component as the pulse amplitude modulation (PAM) signal generated during the sampling process, the changed analog signal may be converted into a continuous original analog signal through a filter.

In addition, the broadcast signal processor 10 may include a video encoder 16 and an audio converter 16.

The video encoder 16 converts the format into a designated video format so that the delivered broadcast signal can be output.

The digital-to-analog converter (DAC) refers to a mechanical or electrical device that converts discrete digital signals into continuous analog signals, and is made of designated audio.

The second broadcast signal processor 20 is applied with the contents described above with respect to the first broadcast signal processor 10.

The output unit 40 includes a video output unit 41 and an audio output unit 42.

The video output unit 41 outputs the video signal processed by the video encoder 15, and the audio output unit 42 outputs the audio signal converted by the audio converter 16.

The wireless transceiver 50 wirelessly transmits the broadcast signal processed by the broadcast signal processor 10 or 20 to the sub image device in various output forms. At this time, the output form is not limited, but examples include CVBS, Component, and HDMI. This type of output is not limited and all A / V outputs are possible. The wireless transceiver 50 not only transmits a control signal to the sub picture device, but also receives a control signal transmitted from the sub picture device.

The storage unit 60 provides a work space and stores data and information.

The controller 60 controls the at least two broadcast signal processing units to output the restored broadcast signal to the main video device and the at least one sub video device. The controller will be described in detail with reference to FIG. 3 below.

2 illustrates an embodiment of a sub video device of a broadcast receiver according to the present invention.

Referring to FIG. 2, a sub image device according to the present invention includes a sub controller 70, a wireless transceiver 80, and a broadcast signal output unit 90.

The sub controller 70 controls the output according to the control signal of the main video device. In addition, the sub image device is controlled based on a user input signal input to the sub image device.

The broadcast signal output unit 90 outputs a broadcast signal according to a control signal of the sub controller.

The wireless transceiver 80 receives a control signal of the main video device, and transmits a control signal of a sub video device to the main video device under the control of the sub controller. It also receives a user input signal input to the sub-image device.

Hereinafter, a control method of the control unit 30 of the main video device and the control unit 80 of the sub video device will be described with reference to an embodiment.

3A illustrates an embodiment of switching modes of a main video device and a sub video device. The broadcast receiver according to the present invention has embodiments of an independent mode and a linked mode. The user can select this. This can be selected via the OSD (On Screen Display).

3B illustrates an embodiment in which the main video device and the sub video device are in a cooperative mode.

Hereinafter, the independent mode and the associated mode will be described separately.

(1) First Embodiment-Independent Mode

In the independent mode, a main video device including at least two broadcast signal processing units and at least one sub video device including a broadcast signal output unit independently tune each channel to process and output a broadcast signal.

At this time, it is possible to output the program of the MBC broadcasting station to the main video device, and to output the program of the KBS broadcasting station to the sub video device.

In the present embodiment, the inputs of the respective user input devices are processed independently to control each other.

In the main video device, when a user input is input through the wireless transceiver 50, the controller 30 controls the broadcast signal processor 10 to perform broadcast signal processing to output a broadcast signal. In addition, it is possible to control the audio output independently of the main video device.

In addition, in the sub video device, a user input is input through the wireless transceiver 80, and the sub controller 70 transmits the user input signal to the wireless transceiver 50 of the main video device through the wireless transceiver 80. send. In the main video device, the control signal of the sub video device received through the wireless transceiver 50 is transmitted to the controller 30 of the main video device, and the broadcast signal processor 20 is controlled to process the broadcast signal. . In this case, the processed broadcast signal is transmitted to the wireless transceiver 80 of the sub image device through the wireless transceiver 50, received by the sub image device, and output through the broadcast signal output unit 90.

In this case, the sub video device can independently output and change video and audio.

(2) Second Embodiment-Linked Mode

The cooperative mode refers to a method in which a broadcast signal is not processed independently for a main video device and a sub video device, and used as a system in connection with the broadcast signal.

Referring to FIG. 3B, a user may collect a main video device and at least one sub video device in one place, and use a plurality of video devices as one system through one input device.

In this case, the main video device may be used as the output of the main screen, and the sub video device may be used as the output of the subscreen. The output of the sub picture may include information in which the broadcasting station carries the same image as the sub picture of the main picture, broadcast content information in the same channel, EPG information, OSD output, data broadcast information, and the like. This corresponds to an embodiment, and any image that can be separated is possible.

In this case, the main video device and the sub video device can be controlled simultaneously using one input device. Alternatively, each input device may be controlled separately.

In the case of audio output, even if video information is separately outputted, the audio output can be selectively outputted or a plurality of audio can be output simultaneously.

When outputting audio at the same time, each volume can be adjusted independently.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

The effects of the broadcast receiver according to the present invention described above are as follows.

According to the present invention, since a main video device for processing a broadcast signal and at least one sub video device for outputting a broadcast signal under the control of the main video device are provided, a plurality of broadcast receivers can be used at a low cost. There is.

In addition, by using a plurality of video devices in one system, a large amount of information can be provided more efficiently.

Claims (9)

At least two broadcast signal processing units for receiving a broadcast signal and restoring an original signal; A controller configured to control the broadcast signal restored by each broadcast signal processor to be output to a main video device and at least one sub video device; A wireless transmitter / receiver for transmitting the restored broadcast signal to the at least one sub-imager according to a control signal of the controller; And And a broadcast signal output unit configured to output the restored broadcast signal from the main video device according to the control signal of the controller. In the above, the control unit, The main video device and the sub video device are controlled to be connected in an independent mode or a linked mode, In the independent mode, the broadcast signal of the main video device and the sub video device are controlled to be output separately, and when the connection mode is connected, the broadcast signal of the main video device is displayed on the main screen. And a broadcast signal of the sub video device to be output as a sub picture. The method of claim 1, wherein the broadcast signal processing unit A tuner for receiving a broadcast signal modulated for communication, encoded and transmitted in a multiplexed manner; A demodulator for reproducing a broadcast signal modulated by the tuner and receiving the original signal; A demultiplexer for separating the multiplexed composite signal and restoring the original signal or a group of signals; And And a decoder for converting the encoded received signal into an analog signal. delete delete delete The method of claim 1, And the main screen outputs a main image of a broadcast, and the subscreen separates and outputs broadcast contents existing in the same channel as the received broadcast signal. The method of claim 6, The broadcast content existing in the same channel includes at least one of data information, broadcast program information, and data broadcast. The radio receiver of claim 1, wherein And transmitting a control signal of the controller to the at least one sub video device and receiving an input signal of the sub video device. The method of claim 1, wherein the sub imager A sub controller which controls an output according to a control signal of the main video apparatus; An output unit which outputs a broadcast signal according to a control signal of the sub-control unit; And And a wireless transmitter / receiver configured to receive a control signal of the main video device and to transmit a control signal of the sub video device to the main video device under the control of the sub controller.

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