KR20120010844A - Receiver for Digital Multimedia Broadcasting and Channel Searching Method Therefor - Google Patents

Receiver for Digital Multimedia Broadcasting and Channel Searching Method Therefor Download PDF

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Publication number
KR20120010844A
KR20120010844A KR1020100072459A KR20100072459A KR20120010844A KR 20120010844 A KR20120010844 A KR 20120010844A KR 1020100072459 A KR1020100072459 A KR 1020100072459A KR 20100072459 A KR20100072459 A KR 20100072459A KR 20120010844 A KR20120010844 A KR 20120010844A
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KR
South Korea
Prior art keywords
channel
channel search
digital multimedia
multimedia broadcasting
channels
Prior art date
Application number
KR1020100072459A
Other languages
Korean (ko)
Inventor
박용수
Original Assignee
주식회사 파인디지털
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 파인디지털 filed Critical 주식회사 파인디지털
Priority to KR1020100072459A priority Critical patent/KR20120010844A/en
Publication of KR20120010844A publication Critical patent/KR20120010844A/en

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/11—Aspects of broadcast communication characterised by the type of broadcast system digital multimedia broadcasting [DMB]

Abstract

Receiving at least one broadcast signal from the digital multimedia broadcasting transmitter, and checks the number of channels received through the digital multimedia broadcast receiving module and the digital multimedia broadcast receiving module for processing in a form that can be output through a user interface at predetermined intervals, The present invention provides a digital multimedia broadcasting reception terminal including a channel search support unit for notifying that a channel search is required through a user interface when the channel is less than or equal to a preset threshold.

Description

Digital multimedia broadcasting receiving terminal and channel searching method therefor {Receiver for Digital Multimedia Broadcasting and Channel Searching Method Therefor}

The present invention relates to a portable information terminal, and more particularly, to a digital multimedia broadcasting (DMB) receiving terminal and a channel search method therefor.

The DMB service was developed based on the DAB (Digital Audio Broadcasting) system, a European digital radio broadcasting standard that provides high quality audio and data services simultaneously, and has become the system standard used to provide multimedia broadcasting services including video. Hold.

In order to provide the DMB service, the service provider sets up transmission stations for each region and transmits broadcast signals covering the region. At this time, services are provided at different frequencies in different regions for the same broadcast signal so that the broadcast signal transmitted from each transmitting station is not mixed.

Therefore, when the DMB terminal moves between transmission stations having different service coverage areas, the broadcast service cannot be used by preset channel information. Therefore, a channel scan process for searching for a serviceable broadcast channel in a region after moving should be performed.

However, the user of the DMB terminal cannot determine whether he or she is moving the boundary between transmission stations. As a result, the user of the DMB terminal can recognize that the channel search is necessary only after the quality of the broadcast signal that is being watched / listened is deteriorated. In addition, the DMB terminal equipped with only one tuner cannot perform channel search at the same time as receiving a specific broadcast signal. Therefore, the user who was watching / listening the DMB broadcast should perform the channel search at an undesired point of time, thereby impairing service satisfaction. can do.

In order to solve this problem, a DMB terminal having a plurality of tuners has been proposed. The DMB terminal searches for the same service channel as the channel received through the first tuner, and selects and outputs a good signal among broadcast signals received through the first and second tuners.

However, such a DMB terminal cannot be free from the problem of rising manufacturing cost because it requires the use of a plurality of tuners. In addition, since the second tuner should be frequently operated in case the DMB terminal moves the boundary between regions, it is difficult to guarantee the system operation efficiency.

On the other hand, each transmitting station providing the DMB service has a neighboring transmitting station and a service overlapping area. Therefore, when the DMB terminal is located in the service overlap region, the same broadcast signal having a different frequency may be repeatedly searched for channel searching. The channel search results of the DMB terminal are provided to the user in the form of a list. However, as the same broadcast signal is repeatedly searched for, an unnecessary list-up is performed, which may cause inconvenience in confirming the searched channel, and cause confusion in selecting a broadcast signal desired by the user.

Disclosure of Invention The present invention provides a digital broadcast receiving terminal capable of easily notifying when a channel search is required and a channel search method for the same.

Another technical problem of the present invention is to provide a digital broadcast receiving terminal capable of removing duplicate channels among search channels and a channel search method therefor.

In accordance with one aspect of the present invention, there is provided a digital multimedia broadcasting reception terminal for receiving at least one broadcast signal from a digital multimedia broadcasting transmitter and processing the digital multimedia broadcasting receiver into a form that can be output through a user interface. module; And a channel search support unit which checks the number of channels received through the digital multimedia broadcasting reception module at predetermined intervals, and notifies that channel search is necessary through the user interface when the number of available channels is less than or equal to a preset threshold. It includes.

Meanwhile, a channel search method for a digital multimedia broadcasting reception terminal according to an embodiment of the present invention includes a digital multimedia broadcasting reception module and a channel search support unit for searching for a receivable channel and storing the searched channel list in a database. A channel search method for a broadcast receiver, comprising: checking, by the channel search support unit, the number of broadcast signals being received through the digital multimedia broadcasting reception module at predetermined intervals; Confirming, by the channel search support unit, whether the number of currently receivable channels is less than or equal to a specified threshold value; Checking whether the channel search support unit performs a channel search through a user interface when the number of currently receivable channels is less than or equal to the threshold value; And requesting, by the channel search support unit, a channel search from the digital multimedia broadcasting reception module as a channel search command is input through the user interface.

In the present invention, even when using the DMB broadcast service, the user can be notified immediately that the channel search is required and can search for a serviceable channel in the region where the DMB terminal is located.

In addition, when the same broadcast signal having a different frequency is selected in the service coverage overlap region, only one channel having excellent service quality is selected and provided as a channel search result. Accordingly, the search channel can be easily checked and tuned to improve the service satisfaction.

1 is a block diagram of a digital multimedia broadcasting receiving terminal according to an embodiment of the present invention;
2 is a configuration diagram of a channel search support unit shown in FIG. 1;
3 is a flowchart illustrating a channel searching method for a digital multimedia broadcasting receiver according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail.

1 is a block diagram of a digital multimedia broadcasting receiving terminal according to an embodiment of the present invention.

Referring to FIG. 1, the DMB terminal 10 according to an embodiment of the present invention may include a control unit 110, a DMB receiving module 120, a memory 130, a user interface 140, a channel search support unit 150, and Database 160.

The controller 110 controls the overall operation of the DMB terminal 10.

The DMB receiving module 120 receives at least one DMB broadcast signal. In particular, during initial startup, the receivable channel list is stored in the database 160, and the receivable channel list is output through the user interface 140. As the user selects a specific channel, the signal of the channel is amplified, the frequency is converted, and then converted into digital data. In addition, after demodulating and decoding the broadcast signal converted into digital data, the video signal and the audio signal are extracted and output through the user interface 140.

The user interface 140 may include an image output unit, an output unit such as an audio output unit, and an input unit such as a keypad and a touch screen.

The memory 130 stores control information, data, application programs, etc. necessary for the DMB terminal 10 to operate.

The channel search support unit 150 checks the number of channels that are received through the DMB receiving module 120 at predetermined intervals, and when the number of channels that can be received is less than or equal to the specified number, the channel search is required through the user interface 140. Inform.

Then, the channel search is performed as the user requests the channel search. At this time, when the same broadcast signal having a different frequency is detected, only one broadcast signal is selected as a broadcast signal that can be received based on criteria such as received signal strength.

FIG. 2 is a block diagram of the channel search support unit shown in FIG. 1.

As shown in FIG. 2, the channel search support unit 150 includes a reception channel check unit 151, an alarm unit 153, and a channel search unit 155, and further includes a channel selector 157 as necessary. It may include.

The receiving channel checking unit 151 checks the number of channels being received through the front end unit (not shown) of the DMB receiving module 120. The number of channels being received is compared with a preset threshold. The DMB terminal stores the previous channel search result in the DB 160, and thus can also know the total number of channels that can be received according to the previous channel search result. Therefore, in an embodiment of the present invention, the reception channel checking unit 151 compares the total number of receivable channels acquired as a result of the previous channel search with the number of channels currently being received. Then, it is determined whether the ratio of the number of currently received channels to the total number of previously receivable channels is a specified ratio, for example, 50% or less.

The alarm unit 153 informs the user interface 140 that channel search is necessary when the number of channels currently being received is less than or equal to a preset threshold as a result of the confirmation of the reception channel checking unit 151.

When the channel search command is input through the user interface 140 in response to the notification of the alarm unit 153, the channel search unit 155 requests the DMB receiving module 120 to perform a channel search.

The process of checking the number of channels that can be currently received by the reception channel checking unit 151 may be performed while a specific broadcast signal is being output through the DMB receiving module 120 and the user interface 140. Therefore, the user can easily recognize when the channel search is necessary even while watching / listening to the DMB broadcast, and the channel search is immediately performed when the channel search needs to be newly performed, such as moving the boundary between regions. Can be lost.

Meanwhile, when the same broadcast signal having a different frequency is found among the broadcast signals searched by the channel search unit 155, the channel selector 157 selects one broadcast signal having excellent service quality and determines it as a list of available channels. . The quality of service of the broadcast signal may be determined using any one of various methods such as sensitivity measurement through the strength of the received signal.

In the area where the coverage of the DMB transmission station overlaps, a plurality of identical broadcast signals may be detected, and if all the detected broadcast signals are provided as a receivable channel list, the user may be confused when selecting a channel. However, in the present invention, since only one broadcast signal having excellent service quality is selected and provided as a receivable channel list, the receivable channel list can be simplified, and as a result, the user can easily check the channel list and immediately select a desired channel. It can be recognized.

3 is a flowchart illustrating a channel searching method for a digital multimedia broadcasting receiver according to an embodiment of the present invention.

In order to support the channel search method of the present invention, the DMB receiving module 120 may be preceded by a process of storing a list of channels that can be received at initial startup in the database 160.

In this state, the reception channel checking unit 151 of the channel search support unit 150 checks the number of broadcast signals being received through the DMB receiving module 120 at predetermined intervals (S101).

The reception channel checking unit 151 compares the number of currently receivable channels with the number of receivable channels according to a previous channel search result and checks whether the number of currently receivable channels is less than or equal to a specified threshold (S103). In an embodiment of the present invention, step S103 may be a process of determining whether a ratio of the number of currently received channels to the total number of previously receivable channels is a specified ratio, for example, 50% or less.

As a result of checking in step S103, when the number of currently receivable channels is equal to or less than a specified threshold value, the alarm unit 153 notifies that it is necessary to perform a channel search through the user interface 140 (S105).

Accordingly, when a channel search command is received through the user interface 140, the channel search unit 155 requests the DMB receiving module 120 to perform a channel search (S107).

The channel search result of step S107 may be generated as a receivable channel list and output through the user interface 140 (S113).

On the other hand, as a result of the channel search in step S107, a plurality of identical broadcast signals having different frequencies may be detected. Providing all of these broadcast signals as a receivable channel list may cause confusion for users in tuning channels.

Therefore, in the present invention, after the channel search process (S107), it is checked whether the same broadcast signal is searched by the channel selector 157 (S109). When the same broadcast signal having a different frequency is searched, any one broadcast signal having excellent service quality is selected and determined as a receivable channel list (S111). The quality of service of the broadcast signal may be determined using any one of various methods such as sensitivity measurement through the strength of the received signal.

As a result, since only one broadcast signal having a high quality of service is selected and provided as a receivable channel list, the receivable channel list can be simplified, and as a result, the user can easily check the channel list and immediately recognize the desired channel. have.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

10: digital multimedia broadcasting receiving terminal
110:
120: DMB receiving module
130: memory
140: user interface
150: channel search support unit
160: database

Claims (12)

A digital multimedia broadcasting reception module for receiving at least one broadcast signal from a digital multimedia broadcasting transmitter and processing the same into a form that can be output through a user interface; And
A channel search support unit which checks the number of channels received through the digital multimedia broadcasting reception module at predetermined intervals, and notifies that channel search is necessary through the user interface when the number of available channels is less than or equal to a preset threshold value;
Digital multimedia broadcasting receiving terminal comprising a. The method of claim 1,
The channel search support unit may include: a reception channel checking unit checking the number of channels received through the digital multimedia broadcasting reception module at each predetermined period and comparing the threshold value with the threshold value;
An alarm unit for notifying that the channel search is necessary through the user interface when the number of channels currently being received is less than or equal to the preset threshold as a result of confirming the reception channel checking unit; And
A channel search unit requesting a channel search to the digital multimedia broadcasting reception module when a channel search command is input through the user interface in response to the notification of the alarm unit;
Digital multimedia broadcasting receiving terminal comprising a. The method of claim 2,
The digital multimedia broadcasting receiving module stores a list of receivable channels in a database.
And the receiving channel checking unit determines a ratio of the number of currently received channels to the number of receivable channels stored in the database. The method of claim 1,
The channel search support unit is operable while the specific broadcast signal is being transmitted through the user interface. The method of claim 2,
The channel search support unit may further include a channel selector configured to select one of the broadcast signals and determine a list of available channels as the same broadcast signal is repeatedly searched by the channel search unit. The method of claim 5, wherein
The channel selection unit selects a broadcast signal having the highest quality of service as the same broadcast signal is repeatedly searched. The method according to claim 6,
And the channel selector selects a broadcast signal having the greatest intensity of the received signal from the duplicated identically searched same broadcast signals. A channel searching method for a digital multimedia broadcasting receiver having a digital multimedia broadcasting receiving module and a channel searching support unit for searching for a receivable channel and storing the searched channel list in a database.
Confirming, by the channel search support unit, the number of broadcast signals received through the digital multimedia broadcasting reception module at predetermined intervals;
Confirming, by the channel search support unit, whether the number of currently receivable channels is less than or equal to a specified threshold value;
Checking whether the channel search support unit performs a channel search through a user interface when the number of currently receivable channels is less than or equal to the threshold value; And
Requesting, by the channel search support unit, a channel search to the digital multimedia broadcasting reception module as a channel search command is input through the user interface;
Channel search method for a digital multimedia broadcasting receiving terminal comprising a. The method of claim 8,
The step of checking whether the channel search support unit currently receives the number of channels that can be received is less than or equal to the threshold value, determines a ratio of the number of currently received channels to the number of receiveable channels stored in the database. Channel search method for. The method of claim 8,
After requesting a channel search to the digital multimedia broadcasting receiving module,
Checking whether the same broadcast signal is searched for repeatedly; And
Selecting one of the same broadcast signals;
Channel search method for a digital multimedia broadcasting receiving terminal further comprising. The method of claim 10,
The selecting of one of the same broadcast signals may include selecting a broadcast signal having the best quality of service. The method of claim 11,
The selecting of one of the same broadcast signals may include selecting a broadcast signal having the greatest intensity of the received signal among the same broadcast signals.
KR1020100072459A 2010-07-27 2010-07-27 Receiver for Digital Multimedia Broadcasting and Channel Searching Method Therefor KR20120010844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100072459A KR20120010844A (en) 2010-07-27 2010-07-27 Receiver for Digital Multimedia Broadcasting and Channel Searching Method Therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100072459A KR20120010844A (en) 2010-07-27 2010-07-27 Receiver for Digital Multimedia Broadcasting and Channel Searching Method Therefor

Publications (1)

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KR20120010844A true KR20120010844A (en) 2012-02-06

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