KR20080008824A - A controlling method and a receiver for data broadcasting application - Google Patents

Abstract

A broadcasting receiver for receiving data broadcasting application and a control method thereof are provided to contribute to quick execution by storing an important application in a non-compression system and save a storage space by storing an unimportant application in a compression system. A broadcasting receiver for storing data broadcasting application comprises a tuner unit(101), a data decoder(104), a storage unit(112), and an application control unit(113). The tuner unit receives and tunes data broadcasting signals including an application and an application information table supported by a data broadcasting platform. The data decoder decodes the data broadcasting signals. The storage unit stores the application decoded in the data decoder in a compression system or a non-compression system. The application control unit controls the storage system of the storage unit based on the importance of the received application and controls the execution of the application.

Description

A controlling method and a receiver for data broadcasting application

1 is an embodiment of the configuration of a broadcast receiver according to the present invention

2 illustrates an example in which a data broadcast signal is divided and received.

3 is a general characteristic diagram of a method for controlling a data broadcasting application according to the present invention;

4 is an embodiment of a method for controlling a data broadcast application according to the present invention;

5 is a characteristic diagram of an entire broadcasting system to which the present invention is applied.

* Description of the symbols for the main parts of the drawings

101: tuner unit 102: demodulation unit

103: demultiplexer 104: A / V decoder

105: display unit 106: application control unit

107: channel manager 108: SI decoder

109: SI database 110: carousel decoder

111: application database 112: storage unit

113: control unit 114: security module

The present invention relates to a data broadcast control method and a data broadcast receiver, and more particularly, to a method for controlling a data broadcast application and a broadcast receiver for processing the same.

Recently, with the rapid development of digital broadcasting, not only video and audio broadcasting signals are transmitted from broadcasting stations, but also various data broadcasting signals are transmitted together or independently.

The data broadcasting platform may include an open cable application platform (OCA) data broadcast, a multimedia home platform (MHP) data broadcast, and an advanced common application platform (ACAP) data broadcast.

In addition, a cable system operator (SO), a multiple system operator (MSO), or the like broadcasts a bound application or an unbound application in transmitting data broadcast. To the receiver.

The bound application is an application related to the A / V stream, and refers to an application that a user cannot utilize when tuning to another channel while watching a specific channel. The bound application is an application related to the A / V stream of the channel tuned in the current tuner and is continuously received and displayed by a signal from a broadcasting station, and is not stored permanently or semi-permanently in the broadcast receiver. It is stored in, so it is deleted when tuning to another channel.

On the other hand, the unbound application is an application that is not associated with a specific A / V channel, and may be utilized by a user even when the channel is tuned to another channel or even when the power is turned on / off while watching a specific channel. It means an application that can. The unbound application is stored permanently or semi-permanently in the broadcast receiver. Because stored applications are used, the stored applications need to be updated periodically over time.

The unbound application refers to an unbound application supported by the data broadcasting platform, which will be referred to simply as an unbound application.

However, the above-described method for controlling a data broadcasting application and a broadcast receiver storing the same have the following problems.

When storing a data broadcasting application, there is a limitation of memory space when the application capacity is large.

However, the current data broadcasting standard provides only information that a data broadcasting application can be stored, but no specific method for saving memory space is proposed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for controlling a data broadcasting application to switch the storage system according to the importance of the data broadcasting application, and a broadcast receiver for storing the same.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to select a compressed storage system and an uncompressed storage system according to a storage priority of an application, and to control a data broadcasting application for storing a data broadcasting application. It is to provide a broadcast receiver for storing this.

In order to achieve the above object, the present invention provides a tuner unit for receiving and tuning a data broadcast signal including an application and an application information table supported by a data broadcast platform, a data decoder for decoding the data broadcast signal, and at the data decoder. A storage unit in which the decoded application is stored in a compression system or an uncompressed system, and an application control unit controlling the storage system of the storage unit based on the importance of the received application and controlling the execution of the application. Provided is a broadcast receiver for storing data broadcast applications.

The data broadcast application received by the tuner may be received with a table including a storage priority field indicating a storage priority.

In the storage priority field, a storage priority value of may be specified according to a policy of a transmitting side of a data broadcast.

The application control unit may determine the importance of the application based on the data of the storage priority field.

The application control unit compares the data of the storage priority field of the received application with a reference value to determine the importance of the application, and controls the storage system of the storage unit based on the determined importance.

When the storage priority of the received application is higher than the reference value, the application control unit controls the storage system of the storage unit to an uncompressed storage system.

When the storage priority of the received application is lower than the reference value, the application control unit controls the storage system of the storage unit to the compressed storage system.

When the application is stored in the compression system, the application control unit may decompress and execute the application.

The reference value may be determined by the side of transmitting the data broadcast.

According to another embodiment of the present invention, the present invention comprises the steps of receiving an application supported by the data broadcasting platform, determining the importance of the received application to determine the storage system for each application and the determined A method of controlling a data broadcast application, the method comprising: storing a data broadcast application according to a storage system.

And receiving a table indicating information of the data broadcasting application, wherein the application information table includes a storage priority field of the data broadcasting.

The importance of the data broadcasting application may be determined based on data of a storage priority field of the information table.

When the storage priority data of the information table is higher than a preset reference value, the storage system may be determined in an uncompressed manner.

When the storage priority data of the information table is lower than a preset reference value, the storage system may be determined by a compression method.

The preset reference value is determined by the side transmitting the data broadcast.

When the storage system is determined by the compression method and the data broadcasting application is stored in the compression method, the method further includes decompressing and executing the data broadcasting application.

Therefore, according to the present invention, the storage system can be switched according to the importance of the data broadcasting application.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings. In addition, the terminology used in the present invention was selected as a general term widely used as possible now. However, in certain cases, the applicant arbitrarily selected a term, and in this case, the meaning is described in detail in the corresponding part. Therefore, the terms used in the present invention should be understood as meanings of the terms rather than simply names of the terms.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

FIG. 1 is a diagram illustrating an example of a digital broadcast receiver configured to process a digital broadcast signal including valid time information of data transmitted according to the present invention.

1 shows an embodiment of the configuration of a broadcast receiver according to the present invention. 2 is a diagram illustrating a state in which a data broadcast signal is divided and received.

Referring to FIG. 1, a digital broadcast receiver according to the present invention includes a tuner 101, a demodulator 102, a demultiplexer 103, an A / Audio (V) decoder ( 104, a display part 105, an application controller 106, a channel manager 107, a system information decoder 108, a system information database 109, A carousel decoder 110, an application database 111, a storage unit NVRAM or a flash memory 112, a controller 113, and the like. Cable card 114).

The digital broadcast receiver may be, for example, a digital television receiver.

The tuner unit 101 may receive an air wave or cable digital television signal (DTV signal) through an antenna and transmit the received signal to the demodulator 102. In this case, the tuner unit 101 may be controlled by the channel manager 107 and report the result and strength of the signal received by the control to the channel manager 107.

The demodulator 102 may demodulate and transmit the broadcast signal tuned by the tuner 101 to the demultiplexer 103. In this case, when the demodulator 102 performs demodulation, when the signal received from the tuner 101 is an over-the-air broadcast signal, the demodulator 102 may perform VSB (vestigial side band) demodulation. Quadrature Amplitude Modulation (QAM) demodulation or vestigial side band (VSB) demodulation may be performed. In this case, demodulation of the over-the-air broadcast signal may perform 8VSB demodulation, and demodulation of the cable broadcast signal may perform 64 or 256 QAM demodulation and 16VSB demodulation. This corresponds to the embodiment.

The demultiplexer 103 may demultiplex the broadcast signal demodulated by the demodulator 102. That is, the demultiplexer 103 may filter data related to audio, video, and data broadcasting from input transport stream packets. In this case, the demultiplexer 103 may also filter a descriptor defining storage priority information of the transmitted application in accordance with the present invention.

That is, the demultiplexer 103 may demultiplex the received broadcast signal under the control of the SI decoder 108 and / or the carousel decoder 110. For example, the demultiplexer 103 may demultiplex tables including audio, video and data broadcast related data from transport stream packets as described above. In this case, the demultiplexing unit 103 may perform the demultiplexing by inspecting a header part common to each received table.

That is, the demultiplexer 103 may create a section of a table for A / V broadcasting service and transmit it to the SI decoder 108, and transmits carousel data for data broadcasting service in accordance with the present invention. The table section may be filtered to be transmitted to the carousel decoder 110.

In addition, the demultiplexer 103 may demultiplex the A / V transport stream packet under the control of the channel manager 107. Therefore, when the A / V PID (Packet IDentifier) of the corresponding virtual channel is set, the demultiplexer 103 demultiplexes the elementary stream of the A / V to A / V. Each may be transmitted to the decoder 104.

The A / V decoder 104 may receive the A / V elementary stream packets from the demultiplexer 103 and decode them in a manner such as MPEG-2 or AC3. The A / V decoder 104 may transmit and decode the decoded A / V data to the display unit 105 in synchronization with a synch (VDP) by a video display processor (VDP).

The display unit 105 may output the A / V data decoded and received from the A / V decoder 104 through a screen in the case of an audio signal through a screen in the case of a video signal. . In this case, when the data decoded and received from the decoder 104 is a video signal and is output through a screen, the display unit 105 may be controlled by OSD (On Screen Display) graphic data.

The channel manager 107 may manage a channel map and control the tuner 101 and the SI decoder 108 to meet the channel request of the viewer. The channel manager 107 receives a parsing request and a result of a channel association table of a channel to be tuned to the SI decoder 108, and updates the channel map based on the received result. The A / V PID may be set in the demultiplexer 103 to request decoding.

The SI decoder 108 is an SI control module that parses a table section included in a broadcast signal and may perform a slave operation under the control of the channel manager 107.

That is, the SI decoder 108 may control the demultiplexer 103 to parse a table section included in the broadcast signal. That is, the SI decoder 108 may set the PID for the table in the demultiplexer 103 to create the table section.

The SI decoder 108 may receive and parse the PSI section made by the demultiplexer 103 for the MPEG-2 system or the PSIP section made by the demultiplexer 103 for the ATSC. The SI decoder 108 may store the parsed information in the SI database 109.

In this case, the SI decoder 108 may parse the data of the actual section data that is not filtered or not by the demultiplexer 103, that is, read all of them, and record the data in the SI database 109. have.

The carousel decoder 110 may receive and parse data broadcast related data transmitted from the demultiplexer 103, for example, a transmitted application information table according to the present invention. The application information table is parsed to extract application related information.

The carousel decoder 110 may store the parsed data in the application database 111 and may monitor whether the data is updated. Therefore, when an update situation occurs, the carousel decoder 110 may play a role of always keeping the information stored in the application database 111 up to date through reinterpretation of the corresponding part.

The carousel decoder 110 may perform a slave operation like the SI decoder 108 under the control of the channel manager 107.

The application controller 106 determines the importance of the received application based on the storage priority value extracted by the carousel decoder 110. As an example of the method of determining the importance of the application, there is a method in which the storage priority value of the application is compared with a reference value set.

That is, when the storage priority value of the received application is larger than the set reference value, it may be determined as an important application, and when it is smaller, it may be determined as a non-important application. For example, when the set reference value is 150, an application having a storage priority of 255 is determined as an important application, and an application having a storage priority of 100 is determined as a non-critical application.

The set reference value may be set according to the headend policy or may be set by the user of the receiver.

In addition, according to the determination, the application is stored in the storage unit and then the execution is controlled. That is, when the application is stored in the compression method, control is performed to decompress and execute the application.

In addition, the application control unit 106 may receive a decoding state from the A / V decoder 104 and control the display unit 105 with the OSD. In this case, the application controller 106 may manage an application status and a database, and manage and control an OSD related to data broadcasting.

In addition, the application controller 106 may control the channel manager 107 to perform channel related operations (channel map management and SI decoder operation). In addition, the GUI control, user request, and television system state of the entire television can be stored and restored in the storage unit 112.

In addition, the digital television receiver may be involved in demodulation of the digital broadcast signal received through the tuner unit 101 via the security module 114 connected to the outside. That is, when the security module 114 transmits data related to the demodulation to a digital television receiver, the control unit 113 in the digital television receiver generates a signal capable of controlling the received digital broadcast signal by receiving the data. To be transmitted to the demodulator 102. The demodulator 102 may demodulate the signal according to the control signal and decode the same through the above-described process.

 Hereinafter, a method of controlling a data broadcasting application according to the present invention will be described.

3 schematically illustrates a method for controlling a data broadcast application according to the present invention, and FIG. 4 illustrates a specific embodiment of the method according to the present invention.

Referring to FIG. 3, in the method for controlling an application according to the present invention, a step of receiving a new unbound application at the broadcast receiver (s301) and determining a storage method of the application according to the importance of the received unbound application (s302). ), Storing the received unbound application according to the determined storage method (s303), and executing the stored application (s304).

Referring to FIG. 4, there is shown an embodiment of a method of determining a storage method according to the importance of the received unbound application, and a storage and execution thereof.

In the present invention, the result of comparing the storage priority value of the application with the reference value is used as a criterion for determining the importance of the received application. This will be described in detail.

First, a new unbound application is received (s401). At this time, not only an unbound application but also an application information table containing information about the application is received. As described above with reference to FIG. 2, the application or application information table is received in a divided form. This is because a broadcast station or the like cannot often transmit data as one complete file at a time. However, the present invention is not limited to the case of transmitting in this manner, and may be transmitted as one complete data.

The application information table includes a storage_priority value field. Table 1 below describes the storage priority fields.

If the storage priority is 0, the application is not saved. If the value is 1-10, the application is reserved for future use. If the value is 11-255, the value depends on the importance of the storage. This growing application is represented. That is, an application having a storage priority value of 255 is the most important application.

On the headend side, whether or not to save the application can be sent to the receiver with a policy in the storage priority field. In addition, the headend side can distinguish the importance of the application according to the policy, and send it to the receiver with different storage priority values.

After receiving the application information table, further parsing the table is required. This is because parsing is required to extract information contained in the application information table. The application information table is parsed and the value of the storage priority field is extracted.

Based on the extracted storage priority value, the importance of the received application is determined. As an example of the method of determining the importance of the application, there is a method of comparing the storage priority value of the application with a reference value set (S402).

That is, when the storage priority value of the received application is larger than the set reference value, it may be determined as an important application, and when it is smaller, it may be determined as a non-important application. For example, when the set reference value is 150, an application having a storage priority of 255 is determined as an important application, and an application having a storage priority of 100 is determined as a non-critical application. In this case, the result of the comparison may be represented as large or small in terms of the size of data, and may be represented as high or low in terms of importance. This is a difference in expression, and there is no difference in the gist of the invention.

The set reference value may be set according to the headend policy or may be set by the user of the receiver.

In the case of setting according to the headend policy, the head end may transmit a reference value setting message signal to a broadcast receiver through a communication line, or the broadcasting station determines a reference value and directly inputs a serviceman or the like. . In addition, the headend policy can be loaded and sent to the execution management application (Monitor Application), or can be set in the management platform of the middleware of the receiver. Of course, this is only an embodiment, and the scope of the present invention is not limited thereto.

When set according to the user's selection, the user may determine a reference value through an OSD (On Screen Display). In addition, if the decision path is derived from a remote controller or the like, the storage system can be easily selected. This method is merely an example.

If the storage priority value of the application is smaller than the set reference value, the received application is stored in a compressed manner (s403). This saves storage space by determining non-critical applications and storing them in a compressed manner.

When the application stored in the compression method is executed, the decompression operation is performed through the decompression (S404).

If the storage priority value of the application is larger than the set reference value, the received application is stored in a non-compressed manner (S405). Instead of saving storage space by deciding to be an important application and saving it in an uncompressed manner, it saves decompression time for faster execution.

When the application stored in the non-compression method is executed, the application is executed without the step of decompressing (S406).

5 shows an overall broadcast system to which the present invention is applied.

The broadcast system according to the present invention includes a broadcast station 10 and a broadcast receiver 20. The broadcast station includes a server 11. This illustrates the case where the selection of the storage system in the above embodiments is determined by the head end.

The broadcast station 11 transmits data related to a storage system to the broadcast receiver 20. That is, the reference value is determined and transmitted. The data is stored in the server 11 of the broadcasting station 10. Data stored in the server of the broadcasting station can be transmitted through the Internet, LAN, cable, TCPIP and the like.

At this time, the application-related information stored in the server may be transmitted using a data transmission technique such as a carousel. The carousel refers to a method in which the digital video broadcasting repeatedly transmits data in order to effectively use a downlink channel having a relatively wide bandwidth compared to an uplink channel. The carousel corresponds to an embodiment, and a method of transmitting data broadcast is not limited.

According to such a system, a broadcasting station for transmitting a data broadcast, i.e., a headend, designates an application storage priority value, inserts it into an application information table, and sends a reference value to be compared to a receiver. To control.

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 receiving the data broadcast application and the control method for controlling the same according to the present invention described above are as follows.

According to the present invention, the storage system can be switched according to the importance of the data broadcasting application.

In other words, in the case of an important application, it is stored in a non-compression manner to achieve fast execution, and in the case of a non-critical application, it is stored in a compression method to save a storage space.

Claims (16)

A tuner unit configured to receive and tune a data broadcast signal including an application and an application information table supported by the data broadcast platform; A data decoder for decoding the data broadcast signal; A storage unit in which the application decoded by the data decoder is stored in a compression system or an uncompression system; And And an application controller for controlling the storage system of the storage unit based on the importance of the received application and controlling the execution of the application. The method of claim 1, And a data broadcast application received by the tuner unit is received with a table including a storage priority field indicating a storage priority. The method of claim 2, And a storage priority value of the storage priority field is specified according to a policy of a transmitting side of the data broadcast. The method of claim 2, And the application control unit determines the importance of the application based on the data of the storage priority field. The method of claim 2, The application control unit determines the importance of the application by comparing the data in the storage priority field of the received application with a reference value, and stores the data broadcasting application, characterized in that for controlling the storage system of the storage unit based on the determined importance. Broadcast receiver. The method of claim 5, And when the storage priority of the received application is higher than a reference value, the application controller controls the storage system of the storage unit as an uncompressed storage system. The method of claim 5, And when the storage priority of the received application is lower than a reference value, the application controller controls the storage system of the storage unit as a compressed storage system. The method of claim 7, wherein And the application control unit controls to execute the application by decompression when the application is stored in the compression system. The method of claim 5, And the reference value is determined by the transmitting side of the data broadcast. Receiving an application supported by the data broadcasting platform; Determining a storage system for each application by determining the importance of the received application; And And storing the data broadcast application according to the determined storage system. The method of claim 10, And receiving a table informing of information of the data broadcasting application. And the application information table includes a storage priority field of a data broadcast. The method according to claim 11, The importance of the data broadcast application is determined based on the data in the storage priority field of the information table. The method of claim 12, And when the storage priority data of the information table is higher than a preset reference value, determining the storage system in an uncompressed manner. The method of claim 12, And when the storage priority data of the information table is lower than a preset reference value, determining the storage system in a compression manner. The method according to claim 13 or 14, And the preset reference value is determined by a side transmitting a data broadcast. The method of claim 14, If the storage system is determined by the compression method and the data broadcasting application is stored in the compression method, controlling the data broadcasting application further comprising decompressing and executing the data broadcasting application.

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