KR20080047858A - The method for raising a velocity of downloading an ota software, the broadcasting receiver for controlling the same - Google Patents

Abstract

A method for improving the velocity of OTA software download, and a broadcasting receiver for the same are provided to read a DDB from a prestored DVR stream and combine the read DDB and a receiving DDB to generate a normal DVR stream, thereby reducing a chance of a time out caused by a delayed time. A method for controlling a broadcasting receiver of downloading an OTA software comprises the following steps of: receiving DDBs(Download Data Blocks) in a predetermined order(S602); determining whether the received DDB is a new one(S603); storing the received DDB in the storage unit of the broadcasting receiver when the received DDB is new one(S604); calculating a block number difference between an immediately received DDB and the stored DDB(S605); determining to complete the download of the OTA software when the block number difference is less than 1(S606); applying a newly received software to the broadcasting receiver when all block numbers of DDBS are received(S607); reading a DDB with a block number which is not received out of a DVR(Digital Video Recorder) when the block number difference is more than 2(S609); storing the new DDB and making a DVR stream searching process in a standby mode when the read DDB is new one(S611).

Description

The method for raising a velocity of downloading an OTA software, the broadcasting receiver for controlling the same}

1 is a diagram illustrating a process of downloading software and the like using OTA according to the related art.

2 is a diagram schematically illustrating a process of downloading software and the like using OTA according to the present invention.

3 is a diagram illustrating syntax of a download data block (DDB).

4 illustrates syntax of the DSM-CC Selection Format.

5 is a diagram illustrating a configuration of a broadcast receiver for downloading software using OTA according to the present invention (block diagram).

6 is a flowchart (flow chart) illustrating a control method of a broadcast receiver for downloading software using OTA according to the present invention.

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

500: broadcast receiver 501: tuner

502: demultiplexer 503: audio buffer

504: Video buffer 505: Data buffer

506: MPEG decoder unit 507: signal synthesis unit

508: system control unit 509: OSD generation unit

510: memory unit 511: user input unit

The present invention relates to a broadcast receiver, a DTV, and more particularly, to a method for increasing a software download speed using an OTA, and a broadcast receiver therefor. Of course, the broadcast receiver includes not only a general television but also a mobile video device (eg, a mobile phone, a PDA, etc.) capable of receiving a broadcast signal.

The broadcast receivers can be broadly classified into analog televisions and digital televisions. In recent years, the broadcast receiver not only prevents deterioration of video and audio signals, but also does not see dual screens caused by the reflection of analog radio waves and produces no noise. Due to its inadequate advantages, digital television stands out in the market.

On the other hand, the digital television is released by embedding suitable software when the product is released. In this case, the software means software for controlling the operation of the digital broadcasting receiver and the user such as a user interface or the digital television itself.

The software means, for example, a program that is directly or indirectly related to system operation of a television, and is required to upgrade the software in order to further improve its performance or to change the user environment.

There are several ways to upgrade software such as digital television. First, there is a method in which a serviceman of a manufacturer who manufactures the digital television directly upgrades the software. Second, there is a method in which the user accesses the manufacturer's website and downloads and upgrades. Third, there is a method in which software of each manufacturer is included in the broadcast signal, and the television extracts the corresponding software from the broadcast signal transmitted from a broadcasting station or the like and automatically proceeds with the software upgrade process.

However, the third method is called an over-the-air method, and in some cases, the term OAD (Over Air Download) method may be used interchangeably. In particular, since the software can be transmitted to several digital broadcasting receivers at one time and the procedure is easy from the user's point of view, the interest in the OTA method is amplified.

Furthermore, in recent years, as the DTV market expands rapidly, software upgrades of DTVs are frequently occurring. Thanks to this trend, countries that require OTA, which requests and executes software downloads from broadcasters, are rapidly increasing.

1 is a diagram exemplarily illustrating a process of downloading software and the like using OTA according to the related art. Hereinafter, referring to FIG. 1, a process of downloading software or the like using a conventional OTA will be described below.

The stream shown in FIG. 1 is a visual representation of DDBs transmitted in a certain order. In addition, the meaning of a block-by-block number means a block number (blockNumber) of DDB.

The conventional OTA configuration is designed to receive DDBs in real time in order and apply them to the DTV. Therefore, in the process of receiving the DDBs, if the DDB of the missing block number exists, it has to wait until a new stream is received again and the DDB of the missing block number comes in.

However, for the sake of understanding, the DSM-CC Data Carousel method, which is one of digital broadcasting methods, is as follows. The DSM-CC Data Carousel method is a method of receiving data in the form of a file. In a data carousel, one file is composed of several blocks, which are contained in a table called DownloadDataBlock (DDB). have. In other words, when the receiving end receives and combines all the DDB tables, one file is created.

However, the conventional technology for downloading software by the OTA method has the following problems.

First, in the process of downloading software in the conventional OTA method, even if one DDB is missed, a new stream must be received from the beginning due to the missed DDB, which causes a significant delay in time.

Second, conventionally, in the process of downloading the software by the OTA method, there is a problem that the time-out step is reached due to a time delay, so that the download itself may fail. In particular, when there are a plurality of missed DDBs, the time delay is inevitably larger, and thus a download cannot be completed. However, the time-out may mean a function of automatically terminating the download after 10 minutes have elapsed after the start of the download.

The present invention is to solve the above problems, the object of the present invention is the software download speed using OTA that can complete the download more quickly, even if the missing DDB, in the process of downloading the software in the OTA method To improve the method and to provide a broadcast receiver for the same.

Another object of the present invention is to provide a method for improving software download speed using OTA that can greatly reduce the possibility of timeout due to time delay, etc. in the process of downloading software by OTA, and a broadcast receiver for the same. It is.

In order to achieve the above object, the present invention provides a method for downloading software in an over-the-air (OTA) method, the method comprising the steps of receiving one by one in a certain order in the download data block (DDB) constituting a specific software, Determining whether there is a DDB that has not been received in a predetermined order; and if the DDB has not been received as a result of the determination, retrieving the received DDB from a pre-stored DVR stream; And generating a normal stream by combining the loaded DDB with the received DDB.

During the reception, determining whether there is a DDB that has not been received in the predetermined order includes, when the block number between two consecutively received DDBs differs by two or more, the DDB that has not been received in the predetermined order exists. You can judge that.

In the receiving, determining whether there is a DDB that has not been received in the predetermined order may include receiving a DSM-CC Section Format table and reading a last section number of the received DSM-CC Section Format table. And after receiving the DDB of the last section number read out, and receiving the DDB having the block number of 1, determining that there are no DDBs not received in the predetermined order. Can be done.

In order to achieve the above object, the present invention provides a broadcast receiver for downloading software in an over-the-air (OTA) method, the tuner unit for receiving one by one in a certain order (DownloadDataBlock) constituting a specific software, and during the reception A determination unit for determining whether there is a DDB which has not been received according to the predetermined order; and if the DDB that has not been received exists as a result of the determination, the received DDB is called from a pre-stored DVR stream. It provides a broadcast receiver to increase the software download speed using the OTA including a read unit and a control unit for generating a normal stream by combining the imported DDB and the DDB being received.

The determination unit may determine that there are DDBs not received according to the predetermined order when the block number between two consecutively received DDBs differs by two or more.

The broadcast receiver may further include a flash memory for storing a normal stream generated by the controller.

Therefore, according to the present invention, in the process of downloading the software by the OTA method, even if some DDB is not received, the software download can be completed more quickly. And, due to this, there is an effect that can reduce the time-out problem that occurs during the OTA software download process.

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

2 is a diagram schematically illustrating a process of downloading software and the like using OTA according to the present invention. Hereinafter, referring to FIG. 2, according to the present invention, a process of downloading software or the like using the OTA will be described.

The present invention has a feature of quickly searching and retrieving a download data block (DDB) that can be missed in software when performing OTA using a DVR (Digital Video Recording) function or the like.

As shown in the upper portion of FIG. 2, the stream composed of the DDB is transmitted to the broadcast receiver in sequential block number order. However, as shown in the upper portion of FIG. 2, for example, a case in which DDBs of Nos. 34 and 99 are not received may occur. At this time, as shown in the lower part of FIG. 2, only the DDBs of No. 34 and No. 99, which have not been received, are read from the pre-stored DVR stream. Therefore, as shown in the middle of FIG. 2, the stream composed of the DDBs of all the block numbers can be stored in a flash memory or the like and processed normally.

3 is a diagram illustrating syntax of a download data block (DDB). 4 is a diagram illustrating syntax of the DSM-CC Selection Format. Hereinafter, a method of detecting an interval between DDB blocks will be described with reference to FIGS. 3 and 4.

Specification for System Software Update in DVB Systems (DVB-SSU) standard defines the syntax of the DDB as shown in FIG. In the syntax of the DDB, a block number field exists. The block number field is used to identify the number of DDBs currently accepted by the broadcast receiver.

On the other hand, in the stream containing the OTA information, the DDB comes in sequentially. Therefore, if one DDB is not received while sequentially receiving the DDBs, a difference in the block number between the DDBs is increased by two or more (see FIG. 2). At this time, a sub-task or a multi-task loads a pre-stored stream of a DVR and retrieves a DDB of a block number that cannot be parsed. If the DDB of the retrieved block number is set at an allocated position of a flash memory area, a complete OTA stream can be implemented at the broadcast receiver.

In other words, there is no need to wait for a new broadcast stream to be transmitted from the broadcasting station, and the retrieval process for the pre-stored DVR stream is performed by multitasking or subtasking, thereby greatly improving the download speed of the software by the OTA method. As a result, it is possible to significantly reduce the possibility of download failure.

On the other hand, since the block number of the DDB cannot always start from the first time when the broadcast receiver starts to download the OTA method, the time when the last DDB (last block) goes to the first DDB (first block) You need to anticipate. In case of such a case, it may be determined using the last section number (last_section_number) defined in the syntax of the DSM-CC Selection Format shown in FIG. 4. In other words, after receiving the DDB corresponding to the last section number, if the block number of the DDB of the next section is 1, the OTA download is normally performed, and the pre-stored DVR stream is searched. no need. However, after receiving the DDB corresponding to the last section number, if the block number of the DDB in the next section is 2 or more, the OTA download is not normally performed. Therefore, the prestored DVR stream is searched to find the missing DDB. Design to pay

5 is a diagram (block diagram) illustrating a configuration of a broadcast receiver for downloading software using OTA according to the present invention. Hereinafter, referring to FIG. 5, the operation of downloading the OTA software by the broadcast receiver according to the present invention will be described.

As shown in FIG. 5, the broadcast receiver 500 according to the present invention includes a tuner unit 501, a demultiplexer 502, an audio buffer 503, a video buffer 504, a data buffer 505, The MPEG decoder 506, the signal synthesizer 507, the system controller 508, the OSD generator 509, the memory 510, and the user input 511 are included.

The broadcast receiver 500 may be, for example, a digital broadcast receiver, a DTV, or the like, and preferably has a function of downloading software of an OTA method.

The tuner 501 is responsible for tuning a digital broadcast channel. In some cases, it may be composed of a plurality of tuners. The demultiplexer 502 parses an MPEG Transport Stream, which is received through respective services multiplexed on the digital broadcast channel, into audio, video, and data. The audio buffer 503, the video buffer 504, and the data buffer 505 function to temporarily store the audio, video, and data, respectively.

The MPEG decoder 506 decodes the temporarily stored audio, video, data, and the like and restores the original audio and video signal. The OSD generator 509 generates and outputs an OSD image so that a user can check various broadcast information provided through digital broadcasting.

The signal synthesizing unit 507 performs signal synthesis on the image output through the MPEG decoder 506 and the OSD image. The system control unit 508 controls the overall operation of each component of the broadcast receiver 500.

The memory unit 510 stores data necessary for the control and the like. The memory unit 510 may be configured of, for example, a hard disk drive (HDD), a flash memory, or the like. On the other hand, when the broadcast receiver 500 has a time machine function or the like, the stream itself constituting the software of the OTA method is stored in the memory unit 510 without any special operation on the user side. For example, it may be in the form of a DVR stream shown in the lower portion of FIG.

Meanwhile, according to the OTA method, the process of downloading specific software transmits software related to system driving of a television through a service satellite (SI) of a digital broadcast signal through a broadcast satellite, and the broadcast receiver 500 ) Receives it and stores it. In particular, the operation process related to the present invention will be described in detail as follows.

When a command to download specific software is input through the user input unit 511, the system controller 508 controls the demultiplexer 502 to parse DDB data related to the software. The MPEG decoder 506 determines whether DDB data of a block number that has not been transmitted is present among the parsed DDB data.

As a result of the determination of the MPEG decoder 506, if there is DDB data of an untransmitted block number, the DVR stream pre-stored in the memory unit 510 is searched to retrieve the DDB data of the untransmitted block number. By doing so, it generates normal OTA software.

6 is a flowchart (flow chart) illustrating a control method of a broadcast receiver for downloading software using OTA according to the present invention. Hereinafter, referring to FIG. 6, a method of downloading software of an OTA method in the broadcast receiver side according to the present invention will be described as follows. However, since the description of FIGS. 2 to 5 will be described in a sequential order, detailed description will be omitted.

The download of specific software of the OTA method is started (S601). However, the start of the download may be performed automatically or by a specific command on the user side.

According to the start of the download, DDB (DownloadDataBlock) is received in a predetermined order (S602). The predetermined order may be, for example, an order in which the block number of the DDB is sequentially increased.

It is determined whether the received DDB is a new DDB (S603). As a result of the determination (S603), if it is not a new DDB, step S602 is performed. On the other hand, if the determination result (S603), the new DDB is stored in the flash memory of the broadcast receiver (S604). Of course, other storage units may be considered in place of the flash memory.

The block number difference between the DDB just received and the stored DDB is calculated (S605). When the calculation result (S605), the block number difference is less than 1, it is determined whether or not to complete the download of the software of the OTA method (S606). As a result of the determination (S606), when the DDBs of all the block numbers are received, the newly received software is applied to the broadcast receiver (S607). On the other hand, if the determination result (S606), the DDB of all block numbers are not received, step S602 is performed.

On the other hand, when the calculation result (S605) or the block number difference is two or more, the DVR stream previously stored in the broadcast receiver is searched (S608). However, the DVR stream may be automatically stored according to a time machine function.

Among the DVR streams, the DDB of the block number which has not been received is called up (S609). It is determined again whether the loaded DDB is a new DDB (S610). This is because, if it is not a new DDB but a received DDB, there is no need to save it again. As a result of the determination (S610), if it is not a new DDB, step S607 is performed, and if it is a new DDB, it is designed to wait for a DVR stream search process (S611) while performing step S604.

On the other hand, the terms used in the present invention (terminology) are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a person skilled in the art, the definition of which is used throughout the present invention. It should be based on what has been done.

The present invention is not limited to the above-described embodiments, and as can be seen in the appended claims, modifications can be made by those skilled in the art to which the invention pertains, and such modifications are within the scope of the present invention.

And, the above-mentioned numerical value is a preferred embodiment or merely an example, the scope of the present invention is not limited to the numerical values, and as can be seen in the appended claims, Modifications are possible by those skilled in the art and such modifications are within the scope of the present invention.

The method of improving the software download speed using the OTA according to the present invention described above and the effects of the broadcast receiver for this purpose are as follows.

First, according to the present invention, even if the missing DDB exists in the process of downloading the software by the OTA method, the download can be completed more quickly.

Second, according to the present invention, in the process of downloading the software by the OTA method, there is an effect that can greatly reduce the possibility of timeout due to time delay.

Third, according to the present invention, it is possible to reliably download the software of the OTA method, thereby reducing the consumer's claim, there is a side effect that can be used as a sales point.

Claims (6)

In the method of downloading the software by OTA (Over The Air) method, Receiving download data blocks (DDBs) constituting specific software one by one in a predetermined order; Determining whether there is a DDB which has not been received in the predetermined order during the reception; As a result of the determination, when the unreceived DDB exists, retrieving the unreceived DDB from a pre-stored DVR stream; And And combining the retrieved DDB with the received DDB to generate a normal stream. The method of claim 1, In the receiving, determining whether there is a DDB that has not been received in the predetermined order, If the block number between successive received DDBs differ by more than 2, the method for increasing the software download speed using the OTA to determine that there is a DDB not received according to the predetermined order. The method of claim 1, In the receiving, determining whether there is a DDB that has not been received in the predetermined order, Receiving a DSM-CC Section Format table; Reading the last section number of the received DSM-CC Section Format table; After receiving the read DDB of the last section number, when receiving a DDB having a block number of 1, the OTA is further determined to determine that there is no DDB not received according to the predetermined order How to speed up software downloads. In the broadcast receiver to download the software in the OTA (Over The Air) method, A tuner unit configured to receive DDB (DownloadDataBlock) constituting specific software one by one in a predetermined order; A determination unit that determines whether there is a DDB which has not been received in the predetermined order during the reception; A reading unit that reads out the unreceived DDB from a pre-stored DVR stream when the received DDB exists as a result of the determination; And And a control unit for generating a normal stream by combining the retrieved DDB with the received DDB. The method of claim 4, wherein The determination unit, And a block number between two consecutively received DDBs, wherein the broadcast receiver improves the software download speed by using the OTA which determines that there are DDBs not received according to the predetermined order. The method of claim 4, wherein The broadcast receiver, And a flash memory for storing a normal stream generated by the control unit.

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