KR20100047746A - Broadcasting reception apparatus and broadcasting channel changing method using by it - Google Patents

Broadcasting reception apparatus and broadcasting channel changing method using by it Download PDF

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Publication number
KR20100047746A
KR20100047746A KR1020080106764A KR20080106764A KR20100047746A KR 20100047746 A KR20100047746 A KR 20100047746A KR 1020080106764 A KR1020080106764 A KR 1020080106764A KR 20080106764 A KR20080106764 A KR 20080106764A KR 20100047746 A KR20100047746 A KR 20100047746A
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KR
South Korea
Prior art keywords
channel
broadcast
satellite
reception strength
information
Prior art date
Application number
KR1020080106764A
Other languages
Korean (ko)
Inventor
고명기
Original Assignee
주식회사 대우일렉트로닉스
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Application filed by 주식회사 대우일렉트로닉스 filed Critical 주식회사 대우일렉트로닉스
Priority to KR1020080106764A priority Critical patent/KR20100047746A/en
Publication of KR20100047746A publication Critical patent/KR20100047746A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

Abstract

PURPOSE: A broadcasting receiving device and a broadcasting channel changing method using the same are provided to change a satellite broadcasting channel into a public wave broadcasting channel when receiving strength of the satellite broadcasting channel is smaller than reference receiving strength, thereby effectively reproducing the same program. CONSTITUTION: A receiving strength measuring unit(118) measures receiving strength of a satellite broadcasting channel or a public wave broadcasting channel. A storage unit(116) stores channel change information for a broadcasting channel change. If the measured receiving strength is smaller than the reference receiving strength of the channel change information, a controller(104) changes a channel according to the channel change information.

Description

Broadcast receiving device and broadcasting channel switching method using same {BROADCASTING RECEPTION APPARATUS AND BROADCASTING CHANNEL CHANGING METHOD USING BY IT}

The present invention relates to a technique for switching a broadcast channel using a broadcast receiver, and more particularly, a broadcast receiver suitable for switching between a satellite broadcast channel and an over-the-air broadcast channel using a broadcast receiver and a broadcast channel using the same. It is about a switching method.

As is well known, the characteristics of digital broadcasting are summarized as multichannel, high quality and multifunctional. Such digital broadcasting is able to bundle and transmit video, audio and data regardless of contents and size at the same time due to the development of multiplexing technology, and because the interactive service through a modem is possible, digital broadcasting has limited limitations of conventional analog data broadcasting. Beyond that, it can provide viewers with a higher level of multimedia services.

In addition, a broadcast signal provided in digital broadcasting includes additional information such as video information, audio information, and caption data, and the additional information is a table designed to operate in all TS (Transport Stream) for broadcasting programs and digital broadcasting. Contains Program and System Information Protocol (PSIP) information that is a set of. Here, the PSIP information may indicate EPG (Electronic Program Guide) information and SI (System Information) of the transmitted TS.

The purpose of this PSIP information is to describe the information of the virtual channel transmitted in a specific TS. The PSIP information includes a modulation scheme of each channel required for normal reception of each channel, a packet ID information for demultiplexing video and audio information from a packet stream carried on a carrier frequency and a carrier channel, and a program. Program guide information including title, start time, brief content (summary of summary), caption service status, program grade, current time information, etc. are included.

Meanwhile, when a broadcast receiving device receives and plays a broadcast program of a satellite broadcast channel, when searching for an arbitrary satellite broadcast channel, the channel frequency of the satellite broadcast channel must be known in advance, and the satellite is based on the channel frequency. There is a predetermined range of channel frequency bandwidths for receiving satellite broadcast programs of a broadcast channel, and the channel frequency bandwidth is received through a satellite transponder according to transmission of a broadcast station providing satellite digital broadcast. The device may receive and play a satellite broadcast program of a satellite broadcast channel according to the channel frequency bandwidth.

However, in the conventional broadcast receiving apparatus, there is a problem in searching for and receiving a desired broadcast channel through the broadcast receiving apparatus when the reception strength of the satellite broadcasting channel has a relatively smaller value than the preset reception strength due to various climatic factors. Even if it receives, there is a problem that the satellite broadcast program cannot be played normally.

Accordingly, the present invention provides a broadcast receiving apparatus capable of switching to a preset airwave broadcasting channel corresponding to a satellite broadcast channel when the reception strength of the satellite broadcast channel has a value relatively smaller than the preset reference reception strength, and a broadcast channel using the same. We would like to provide a method of transition.

The present invention also provides a broadcast receiving apparatus capable of switching to a preset satellite broadcasting channel corresponding to an over-the-air broadcasting channel when the receiving strength of the over-the-air broadcasting channel has a value relatively smaller than the preset reference receiving strength, and the broadcasting channel switching using the same. To provide a method.

In one aspect, the present invention, the reception strength measuring unit for measuring and providing the reception strength of the satellite broadcast channel or airborne broadcast channel, a storage unit for storing channel switching information for switching the broadcast channel, and the measured reception strength is If the value has a value relatively smaller than the reference reception strength of the channel switching information, control to switch to the airwave broadcasting channel corresponding to the satellite broadcasting channel according to the channel switching information, or to switch to the satellite broadcasting channel corresponding to the airwave broadcasting channel. It provides a broadcast receiving device including a control unit for controlling.

According to another aspect of the present invention, there is provided a method for tuning a satellite broadcasting channel or an airwave broadcasting channel in a state in which channel switching information for switching a broadcasting channel is set and registered, and measuring the reception strength of the satellite broadcasting channel or the airwave broadcasting channel; Checking whether the measured reception strength has a value relatively smaller than a reference reception strength of the channel switching information; and if the measured reception strength has a relatively small value, the aerial broadcasting corresponding to the satellite broadcasting channel according to the channel switching information. The present invention provides a method for switching a broadcast channel using a broadcast receiving device, the method comprising: switching to a channel and tuning or switching to a satellite broadcast channel corresponding to the airwave broadcasting channel.

According to the present invention, a satellite broadcasting channel or an over-the-air broadcasting channel is tuned in the state of registering and registering channel switching information for switching the broadcasting channel, the reception strength of the satellite broadcasting channel or the over-the-air broadcasting channel is measured, and the measured reception strength is predetermined. If the value is relatively smaller than the received reference strength, the channel is switched to the broadcasting channel or the satellite broadcasting channel corresponding to the satellite broadcasting channel or the broadcasting channel according to the channel switching information, and the broadcasting channel is tuned according to the receiving strength of the broadcasting channel. By switching, the same program can be effectively played, thereby improving user convenience.

Summary of the Invention The technical gist of the present invention is to tune a satellite broadcast channel or an airborne broadcast channel in a broadcast reception device and measure the reception strength of the satellite broadcast channel or the airborne broadcast channel while playing the broadcast program, and to measure the measured reception strength and a predetermined reference. After comparing with the received intensity, if the measured received intensity has a value that is relatively smaller than the preset reference received intensity, tune the broadcast program or the satellite broadcast channel corresponding to the satellite broadcast channel or the broadcast broadcast channel respectively to tune the broadcast program. It is possible to solve the problem in the prior art through such technical means.

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

1 is a block diagram of a broadcast receiving apparatus suitable for playing a broadcast program by switching a broadcast channel according to a reception strength measured according to an exemplary embodiment of the present invention. The key input unit 102, the control unit 104, tuning and The demodulator 106, the demultiplexer 108, the decoder 110, the signal processor 112, the menu generator 114, the storage 116, and the reception strength measurer 118 are included.

Referring to FIG. 1, the key input unit 102 generates an operation signal for controlling the operation of a broadcast receiving apparatus, including, for example, a remote controller, and the like. In response to the input of a key for setting channel switching information, the channel switching information setting operation signal is generated and provided to the controller 104 in response thereto, and the channel switching information input through the channel switching information setting menu screen is registered. When a key is inputted, the channel switch information registration operation signal is provided to the controller 104.

In addition, the controller 104 performs overall operation control of the broadcast reception apparatus including a microprocessor, for example, and provides a broadcast channel tuning control signal to the tuning and demodulation unit 106 for such operation control. The demultiplexer 108 provides a control signal for separating the demodulated broadcast stream into video and audio signals and additional information, and provides a control signal for decoding the video and audio signals to the decoding unit 110. Provides a control signal for reproducing the decoded video and audio signals to the signal processing unit 112, and provides a control signal for generating various functions of the broadcast receiving apparatus and various menu screens related to the broadcast program to the menu generating unit 114. And stores additional information from the demultiplexer 108 in the storage 116.

In addition, the controller 104 provides a control signal for measuring the reception strength of the satellite broadcasting channel to the reception strength measurement unit 118 while receiving and playing the broadcast program of the satellite broadcasting channel, and receives the reception strength measurement unit 118. After checking whether the measured reception intensity transmitted from the device has a value that is relatively smaller than the preset reference reception intensity, and when the measurement reception intensity has a relatively small value, the stored channel switching information is detected, and the corresponding satellite according to the detected channel switching information. A control signal for tuning the over-the-air broadcast channel corresponding to the broadcast channel is provided to the tuning and demodulation unit 106, and the demultiplexer 108, the decoder 110, and the signal processor 112 Control to play a broadcast program.

Here, the channel switching information may include, for example, reference reception strength, airborne broadcast channel information corresponding to the satellite broadcast channel, satellite broadcast channel information corresponding to the airborne broadcast channel, reference channel information, and the like. For example, may be set using at least one of a phase locked loop (PLL) ID, a vertical synchronization level, a horizontal synchronization level, and the like.

On the other hand, the control unit 104 conversely provides a control signal for measuring the reception strength of the airwave broadcasting channel to the reception strength measurement unit 118 while receiving and playing the broadcast program of the airwave broadcasting channel, and receiving strength measurement unit 118 After checking whether or not the measured reception intensity transmitted from) has a value that is relatively smaller than the preset reference reception intensity, when the measurement reception intensity has a relatively small value, the stored channel switching information is detected, and the corresponding airwave is detected according to the detected channel switching information. The control signal for tuning the satellite broadcast channel corresponding to the broadcast channel is provided to the tuning and demodulation unit 106, and the demultiplexer 108, the decoder 110 and the signal processor 112 Control to play a broadcast program.

Next, the tuning and demodulation unit 106 includes at least one tuner to tune any one of a plurality of broadcast channels received via the antenna in response to a tuning control signal provided from the control unit 104. In this case, the tuned broadcast signals are restored to a transport stream through a process of converting to an intermediate frequency, demodulation, and error correction, and then transferred to the demultiplexer 108, and the received strength measurement unit 118 The reception strength of the satellite broadcast channel to be tuned together is measured. Accordingly, when a control signal for tuning the airwave broadcast channel corresponding to the satellite broadcast channel is provided from the controller 104, the corresponding airwave broadcast channel is tuned to demultiplex the broadcast signal. Transfer to section 108.

The demultiplexer 108 extracts a video and audio signal of a digital broadcast program that the user watches from the reconstructed transport stream, and delivers the video and audio signal to the decoder 110, and additional information (i.e., PSIP) inserted on the transport stream. Information, etc.) packet data is extracted and transmitted to the control unit 104.

Meanwhile, the decoding unit 110 converts the compressed coded broadcast signal (broadcast program signal) of a specific channel into the original signal before encoding by using a decoding scheme such as variable length decoding, inverse DCT, inverse quantization, and motion compensation. The signal is returned to the signal processor 112.

Next, the signal processor 112 displays the digital broadcast signal reconstructed by the decoder 110 through a monitor (not shown), and outputs an audio signal through a speaker not shown, and generates a menu generator 118. Various menu screens created by) are mixed (combined) with video signals and displayed on the monitor.

Meanwhile, the menu generator 114 generates various menu screens (eg, broadcast program information menu screens) according to a control signal from the controller 104 when a user requests broadcast program related information. The menu screen data is transferred to the signal processor 112.

The storage unit 116 includes, for example, a memory, a hard disk drive (HDD), and the like, and the predetermined information (for example, PSIP information, etc.) of the received digital broadcasting program is preset for a predetermined period (for example, For example, one week, two weeks, etc.), and channel switching information transmitted from the controller 104 are stored, and these are extracted and provided to the controller 104 as necessary.

Next, the reception strength measuring unit 118 measures the reception strength of the satellite broadcast channel tuned through the tuning and demodulation unit 106 according to a control signal from the control unit 104 and controls the received reception strength to the measured value. To pass.

Next, in the process of setting and registering channel switching information including reference reception strength for comparison with the reception strength of the satellite broadcasting channel and over-the-air broadcasting channel information corresponding to the satellite broadcasting channel in the broadcast receiving apparatus having the above-described configuration. Explain.

2 is a flowchart illustrating a process of setting and registering channel switching information for switching broadcast channels according to an embodiment of the present invention.

Referring to FIG. 2, in the standby mode of the broadcast receiving apparatus (step 202), the controller 104 inputs a key for setting channel switching information by using a user's input means not shown, for example, a remote controller. In this case, it is checked whether there is a channel switch information setting operation signal generated from the key input unit 102 (step 204).

As a result of the check in the step 204, when there is a channel switch information setting operation signal, the controller 104 provides a control signal for generating a menu screen for setting the channel switch information to the menu generator 114, and thus Accordingly, the channel switching information setting menu screen generated by the menu generator 114 is signal-processed by the signal processor 112 and then displayed through a monitor (not shown) (step 206).

Then, the controller 104 waits for a predetermined time for the user to input the channel switching information through the input means (not shown) (step 208), and then enters a key input unit 102 when a key for registering the input channel switching information is input. In step 210, it is checked whether there is a channel switch information registration operation signal. Here, the channel switching information may include, for example, reference reception strength, airborne broadcast channel information corresponding to the satellite broadcast channel, satellite broadcast channel information corresponding to the airborne broadcast channel, reference channel information, and the like. For example, the PLL ID may be set using at least one of a PLL ID, a vertical synchronization level, a horizontal synchronization level, and the like, and waits for input of channel switching information for a predetermined time (for example, 3 minutes, 5 minutes, etc.). can do

As a result of the check in the step 210, if there is a channel switch information registration operation signal, the controller 104 registers and stores the channel switch information in the storage unit 116 (step 212).

Meanwhile, in the above-described present invention, the channel switching information is set and registered. However, if necessary, morning call information such as changing the reference reception strength and changing the airwave broadcasting channel corresponding to the satellite broadcasting channel may be added, deleted, or changed. Of course.

Next, in the broadcast receiving apparatus having the above-described configuration, the satellite broadcasting channel is tuned and the reception strength of the satellite broadcasting channel is measured while playing the broadcast program, and the measured reception strength is compared with the preset reference reception strength. Subsequently, when the measured reception strength has a value relatively smaller than the preset reference reception strength, a process of tuning the airwave broadcasting channel corresponding to the satellite broadcasting channel and playing the broadcast program will be described.

3 is a flowchart illustrating a process of switching a broadcast channel by comparing a measured reception strength with a preset reference reception strength according to another embodiment of the present invention.

Referring to FIG. 3, in a broadcast reproducing mode in which a satellite broadcasting channel is tuned using a broadcast receiving device to reproduce the broadcast program (step 302), the control unit 104 transmits a satellite broadcasting channel to the reception strength measurement unit 118. The control signal for measuring the reception strength is provided, and accordingly, the reception strength measurement unit 118 measures the reception strength of the satellite broadcast channel tuned through the tuning and demodulation unit 106 and transmits the received signal to the control unit 104. (Step 304).

Then, the controller 104 checks whether the reception strength of the satellite broadcasting channel transmitted from the reception strength measurement unit 118 has a value that is relatively smaller than the preset reference reception strength included in the stored channel switching information (step 306). ).

As a result of the check in the step 306, if the reception strength of the satellite broadcasting channel has a relatively larger value than the preset reference reception strength, the processes of steps 302 to 306 are continuously performed, and the reception strength of the satellite broadcasting channel is If it has a value relatively smaller than the preset reference reception strength, the controller 104 detects channel switching information stored in the storage unit 116 (step 308).

In addition, the controller 104 tunes and demodulates a control signal for tuning an airwave broadcast channel corresponding to the satellite broadcast channel according to the airwave broadcast channel information corresponding to the satellite broadcast channel in the detected channel switching information. In response, the tuning and demodulation unit 106 tunes the corresponding airwave broadcast channel and transmits the broadcast signal (broadcast program signal) to the demultiplexer 108 (step 310). In this case, when there is no airwave broadcasting channel information corresponding to the satellite broadcasting channel, the reference channel may be tuned according to the reference channel information. The reference channel information may be set as a user preferred channel or a default channel in the broadcast receiving device. Can be.

Subsequently, the broadcast signal separated by the demultiplexer 108 is decoded by the decoder 110, and then reproduces the broadcast program of the corresponding airwave broadcasting channel through a monitor and a speaker (not shown) through the signal processor 112. (Step 312).

Meanwhile, in the above-described embodiment of the present invention, if the reception strength of the satellite broadcasting channel has a value relatively smaller than the preset reference reception intensity while the broadcast program of the satellite broadcasting channel is being reproduced, it is switched to the corresponding airwave broadcasting channel. As described above, it is possible to switch to the corresponding satellite broadcast channel when the reception strength of the airwave broadcasting channel has a value relatively smaller than the preset reference reception intensity while playing the broadcast program of the airwave broadcasting channel.

Therefore, when the broadcast intensity of the satellite broadcast channel has a value relatively smaller than the preset reference receive intensity while playing the broadcast program of the satellite broadcast channel, the same broadcast program can be played by switching to the over-the-air broadcast channel corresponding to the satellite broadcast channel. have.

In the foregoing description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto. Those skilled in the art will appreciate that the present invention may be modified without departing from the spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

Block diagram of a broadcast receiving apparatus suitable for reproducing a broadcast program by switching broadcast channels according to measured reception strengths,

2 is a flowchart illustrating a process of setting and registering channel switching information for switching broadcasting channels according to an embodiment of the present invention;

3 is a flowchart illustrating a process of switching a broadcast channel by comparing a reception strength measured with a preset reception strength according to another embodiment of the present invention.

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

102: key input unit 104: control unit

106: tuning and demodulation unit 108: demultiplexer

110: decoding unit 112: signal processing unit

114: menu generation unit 116: storage unit

118: reception strength measurement unit

Claims (6)

A reception strength measuring unit which measures and provides reception strength of a satellite broadcasting channel or an over-the-air broadcasting channel; A storage unit which stores channel switching information for broadcasting channel switching; When the measured reception strength has a value relatively smaller than the reference reception strength of the channel switching information, the control is performed to switch to the airwave broadcasting channel corresponding to the satellite broadcasting channel according to the channel switching information or corresponding to the airwave broadcasting channel. Control unit for controlling to switch to the satellite broadcast channel Broadcast receiving device comprising a. The method of claim 1, And the channel switching information includes the reference reception strength, airwave broadcast channel information corresponding to the satellite broadcast channel, satellite broadcast channel information corresponding to the airwave broadcast channel, and reference channel information. The method of claim 2, The reference reception strength is set using at least one of a PLL ID, a vertical synchronization level, and a horizontal synchronization level. Tuning a satellite broadcast channel or an over-the-air broadcast channel with setting and registering channel switching information for switching the broadcast channel; Measuring reception strength of the satellite broadcasting channel or the airwave broadcasting channel; Checking whether the measured reception strength has a value relatively smaller than a reference reception strength of the channel switching information; If the relatively small value has the value of switching to the satellite broadcasting channel corresponding to the satellite broadcasting channel according to the channel switching information, or tuning to the satellite broadcasting channel corresponding to the satellite broadcasting channel tuning Broadcast channel switching method using a broadcast receiving device comprising a. The method of claim 4, wherein The channel switching information is a broadcast channel switching method using a broadcast receiving device including the reference reception strength, airwave broadcast channel information corresponding to a satellite broadcast channel, satellite broadcast channel information corresponding to an airwave broadcast channel and reference channel information. The method of claim 5, And the reference reception strength is set using at least one of a PLL ID, a vertical synchronization level, and a horizontal synchronization level.
KR1020080106764A 2008-10-29 2008-10-29 Broadcasting reception apparatus and broadcasting channel changing method using by it KR20100047746A (en)

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KR1020080106764A KR20100047746A (en) 2008-10-29 2008-10-29 Broadcasting reception apparatus and broadcasting channel changing method using by it

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Application Number Priority Date Filing Date Title
KR1020080106764A KR20100047746A (en) 2008-10-29 2008-10-29 Broadcasting reception apparatus and broadcasting channel changing method using by it

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