DE10065005A1 - Digital data transmission service and file downloading method therefor - Google Patents

Abstract

The present invention relates to a digital data transmission service and a file downloading method therefor, and more particularly, to a digital data transmission service method capable of setting a receiver by downloading primary data necessary for the data service before a user selects a data channel, one of which is An MHEG processor is used, comprising: a first step in which a user interface component transmits information about the current channel to all components when power is applied to a receiver; a second step in which a service information component creates service information across all channels by receiving data through a data transfer component and informs a data service component of this fact; a third step in which the data service component initializes each service to primary data of all data service channels by requesting a data list from the service information component and informs a broadcast data presentation component that a data service is possible; a fourth step in which, when a user changes a channel, the user interface component transmits information about a new channel; and a fifth step in which the transmission data presentation component receives service data / a service object from the data service component in order to present this / this in a user output device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a digital data Transfer service and a file download process for that, and especially a digital data Transmission service procedure that is capable of a Recipients by downloading primary data required for the data service are required to stop before a user chooses a data channel.

2. Description of the prior art

If a user in a digital data Transmission service chooses a data channel are in the general all data that the service contains, immediately received when selecting the data channel and processed. Such a conventional digital data Transmission service procedure is described with reference to the Described drawings.

Fig. 1 is a block diagram showing the construction of a conventional digital TV receiver hardware, in which a MPEG transport stream that is received by a front-end processor 100, is passed over a common interface 200 to a demux system 400.

The MPEG stream supplied in this way is sorted by packet IDs classified while going through a PID filter, and restores scrambled signals while he runs through a descrambler.

From the restored signals, an A / V signal is sent to an A / V filter and filtered to produce an image (video) and a sound (audio), and PCR data is used for visual information of the service. The rest of the signals are data for use in a data service, which are stored in an SRAM and then used for the data service. Most of the time, this process includes a CPU system 300 for executing software control.

Fig. 2A is a schematic view of a data service receiver to which a digital data transmission service method is tuned. FIG. 2B is a schematic view of the system configuration of an example of a data service receiver of FIG. 2A, in which a broadcast data representation component (SP) is a component called an application that uses an MHEG browser, an HTML browser, a Serve Title Processor, etc., a data service component (DS), which is a component in close connection with the present invention, which includes a data carousel, an object carousel, etc., a data transfer component (DT), which is a component for routing data from a transmission network other components, ie, a demultiplexer (deMUX), and a service information component, which is a component for creating information about all forms of services, including data services and AV services received from a transmitter, ie a PSI / SI Manager.

In the conventional digital data transmission service method for the configured digital data service receiver, as shown in FIG. 3, when power is applied to a receiver, a user interface component 10 outputs information about the current channel to a service information component 30 , data service component 40 and broadcast data presentation component 50 in S10.

At this time there is in the current channel no data service and the components in the Data services are included waiting for you to choose one Data service channel.

Then, when a user changes the channel, the user interface component transmits new channel information to all components in S20, and accordingly, the service information component 30 creates service information about the new channel in S30.

If data transmission is included in the new channel at this time, the service information component 30 informs the data service component of this fact in S40.

Accordingly, data service component 40 performs service initialization by sending / receiving the new channel data service to / from the data transfer component in S50.

Thereafter, the data service component 40 notifies the broadcast data presentation component 50 in S60 that a data service is being prepared. Thus, the broadcast data presentation component requests and receives service data / service objects required for the output from the data service component in order to then display it by a user output device.

After that, the above process is repeated every time executed when the data service channel is changed.

That is, if according to the state of the art the user as previously described, selects a channel that receives data from has a data transmission receiver, all Processed data contained in the service become. This creates the problem that the User has to wait for a data preparation period, as soon as he or she selects a new service.

Recently, there has been growing interest in digital TV active studies on the applied Application software performed. Of these, MHEG provides ("Multimedia and Hypermedia information coding Expert Group ") the user interactive multimedia / hypermedia in a distributed environment consisting of different types of platforms, and is run by European countries and others who use the DVB ("Digital Video broadcasting ") use standard, intensive examined. MHEG consists of two parts, i. i.e., one  MHEG object, the content of which is via a Communication network is transmitted, and an MHEG Processor that receives the MHEG object from a receiver system, like a digital TV, and receives it through a Series of processes into data that converts to the user be available. In the process in which the MHEG Processor the MHEG object from the communication network the DSM-CC ("Digital Storage Media Command and Control ") protocol that is part of the MPEG standard is proposed to control audio / video streams applied. Since the MHEG object is distributed in the communication network exists and its position is variable, the MHEG processor can not Have location information on all service objects. Thus, the object carousel carries out the above Function in the DSM-CC protocol.

In the method of downloading files by the broadcast data presentation component, that is, the MHEG processor, for example, assuming that a desired MHEG object (MHEG file 1) is at the position as in Fig. 5 in the distributed environment, the process of searching for the MHEG object as described below with reference to FIG. 6.

The MHEG processor first calls a function defined in the object carousel to find a service gateway that is a kind of main directory. When the service gateway is detected, a subdirectory 1 with a directory search function and a subdirectory 2 with the same process are searched in SA1 and SA2.

When the MHEG processor captures the desired MHEG file, this file is obtained by the read function and then decoded. After that, the MHEG object, the to be used in the MHEG processor, in SA3 and SA4 receive.

In the state of the art file download process Technology is disadvantageous that the MHEG Processor has to wait until each search step is finished, d. that is, until the object carousel executes the Function terminated by the MHEG processor has been. This method is particularly disadvantageous because even if the file containing the MHEG service is received, the procedure described above must be repeated, which is even more uncomfortable for the user.

SUMMARY OF THE INVENTION

It is therefore an object of the present invention to provide a To provide digital data transmission service procedures, that can receive a data service once a user selects or changes a channel by primary data downloaded that are necessary for the data service are, and these are placed in a recipient before the user selects a data channel.

To solve the above problem, therefore, Digital data transmission service method according to the Present invention provided comprising: a first step in which a user Interface component Information about the current Transmits channel to all components when power to one Receiver is created, a second step in which  a service information component about service information all channels created by data through one Data transfer component are received, and a Data service component informed of this fact; a third step in which the data service component every service on primary data of all data service channels initialized by adding a data list to the Service information component is requested, and a Send data presentation component informs that a Data service is possible; a fourth step in which when a user changes a channel that User interface component information about a transmits new channel; and a fifth step in which the broadcast data representation component service data / a Service object received by the data service component this in a user output device to represent.

It is another object of the present invention solve the problem that processor speed is lowered when an MHEG processor requests one Object to receive from the outside, and receiving one specific MHEG data service that uses more frequently is going to make itself faster for a user. The first feature of the present invention is that the MHEG processor a processing program for recording the directory path and file name one from User selected file.

The second feature of the present invention is that the MHEG processor is a processing program for Record the directory path and the  File reference frequency of a file selected by the user Has.

The third feature of the present invention is that the MHEG processor due to the data contained in the first and second feature recorded a file determined, which will be downloaded first.

Further advantages, objects and features of the invention will become more apparent from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be described with reference to the accompanying drawings understandable that only the Serve illustration and thus the present Not intended to limit the invention, of which:

Fig. 1 is a block diagram showing the construction of a conventional digital TV reception hardware system;

Figure 2A is a schematic view of a data service receiver to which a digital data transmission service is adapted;

FIG. 2B is a block diagram of an example of a digital data service receiver of FIG. 2A;

Fig. 3 is a view showing the procedure for a conventional digital data transmission service method;

Fig. 4 is a view showing a digital data transmission service process according to the present invention;

Fig. 5 is an explanatory view showing the position of an MHEG object in a distributed environment;

Figure 6 is a signal flow diagram of a prior art MHEG object search method;

Fig. 7 is a signal flow diagram of a digital data transmission service method using a MHEG-processor according to the present invention;

Figure 8 is a detailed signal flow diagram of a digital data transmission service method using the MHEG processor in accordance with the present invention; and

Figure 9 is a block diagram of hardware to which a digital data transmission service of the present invention is adapted.

DETAILED DESCRIPTION OF THE PREFERRED EXAMPLES

The operation and effects of a digital data transmission method according to the present invention will now be described with reference to FIG. 4.

When power is applied to a receiver, transmits First, a user interface component (UI) in S100 the current channel information to all others Components (SP), (DS), (SI), (DT). In other words, the user interface component (UI) stores one Service channel that immediately before switching off the The recipient is selected, takes the necessary step to receive the channel and transmits the Information of the channel to the other components (SP), (DS), (SI), (DT).

Then a service information component (SI) creates in S200 service information on all channels.

That is, the service information component (SI) is created together with a data transfer component (DT) Service information database across all channels. The too Service information created at this time contains the Information transmitted to a data service channel becomes.

The service information component then notifies (SI) the data service components (DS) in S300 that the Service information database is created.

Then the data service component (DS) requests in S400 Service list at the service information component (SI). That is, the data service component (DS) requests one List of service information across all channels for the purpose data service preparation.  

At this point the data service component (DS) chooses only the information of a data service channel from the List.

Then the data service component (DS) initializes in S500 each service after all primary data Data service channels were requested by her too are processed. In other words, it leads under Use the information of each data service channel Initialization by receiving data from that primarily for the service of each data service channel required are.

Here, the primary data is the only data that is used for Preparation of an initial screen are necessary.

Then the data service component (DS) notifies you Send data representation component (SP) in S600 that Services are available. That means, you notifies the broadcast data presentation component (SP), that the preparation for a data service has ended, and then always accepts a data request if Data are requested.

The user interface component then transmits (UI) in S700 Information about channels to all others Components (SP), (DS), (SI), (DT) if the user selects a channel, thereby performing a predetermined step to execute, in relation to a channel change is to be made.

Then the send data display component (SP) requests for the data service component (DS) service data / on  Service object that is required for the output are / is, and sets the transmission data / the object in S800 on a user output device depending on it.

In other words, by the present invention it is possible to quickly establish a digital data transmission service Provide primary data for the Data service are necessary to be downloaded and a receiver is set before a user enters a Chooses data channel.

That means when the power is on, it sends User interface component (UI) the current Channel information for all other components (SP), (DS), (SI), (DT). The service information component (SI) creates a service information database about all Channels. Then the data service component prompts Receive the list of primary data of all service channels that are to be processed by her, and then provides one Digital data transmission service by executing a Initialization ready.

In addition, the file downloading method of the digital data transmission service will now be described with reference to Figs. 7 to 9.

An MHEG processor according to the present invention has a path table for recording a Directory path, and a file table for recording a file name.

The path table is from a linked list or another data structure, one of which.  

Branch point a structure with a pointer in the form a character to indicate a directory path and a variable in the form of an integer for recording the reference frequency of this path as a variable element is.

There is also a list or with the file table Data structure linked from structures (in the sequence referred to as "file structure"), each a pointer in the form of a character to indicate a Filename and a variable in the form of an integer to record the reference frequency of this file as have variable element.

When an MHEG service is started and the MHEG A required file path from a processor Object carousel through a common connection process discovered, the MHEG processor occupies a memory for Record the path and then replace the pointer-like variable element of the path structure through the pointer to Display of the directory path. And the MHEG processor increases the reference frequency of the path each time it is replaced by one, and replaces the integer variable element of Path structure through the reference frequency.

The path structures generated by this process are recorded in the path table.

When the MHEG processor receives an actual file, it then records the file name and reference frequency of that file and records them in the file table (see Figure 7).

When the MHEG processor first referred to the file takes, or to a new path and a new file Refers to is the reference frequency of the path name and of the file name 1.

Thus, if the user has a particular MHEG service the reference frequency of the path name and the file name of a file, the associated MHEG objects contains, increased by one for the recording.

If the existing MHEG files are updated while the user is receiving the MHEG service, the MHEG processor searches the path name of these files from the path table and pre-sets the files with a path of the highest reference frequency as a candidate for download. In particular, the file whose recorded file name has the highest reference frequency is downloaded in advance by searching the file table (see Fig. 8).

When a series of new data arrives in the File table are not recorded, the Files that have a path with the highest reference frequency by that time, downloaded in advance, only referring to the pathname of the files while the user is using the existing MHEG service receives.

Fig. 9 is a block diagram of a hardware contrast to which the file down load process of the present invention is adapted, comprising: a receiving unit 501 includes receiving an AV stream, the MHEG content; an NV RAM 502 corresponding to a kind of EEPROM; an operating unit 503 having a demultiplexer and a CPU that decodes the AV stream to convert it into data available to the MHEG processor; a system SDRAM 504 and a flash memory 505 , which form a storage unit. The procedure for downloading a file using the MHEG processor in the hardware thus constructed is described below.

In the flash memory 505 , which consists of four memories 505 A to 505 D, each with a capacity of 2 MB, a multiplicity of application program interfaces (API) are arranged which contain the MHEG processor and the object carousel.

When the user wants to receive MHEG service in the state in which a stream containing MHEG data is received by the receiving unit 501 , the MHEG processor first checks whether the object carousel has the file containing the Includes MHEG service. If the result of the check is negative, the MHEG processor prompts the object carousel to download the file.

When the called object carousel detects the position of the file by the above-mentioned method, it reads it out through the demultiplexer (DEMUX) of the operating unit 503 , the read-out file being decoded into data which are available to the MHEG processor. The MHEG processor processes the data processed in this way in the form desired by the user and records the path name and file name of the file used and the reference frequency thereof in the memory 505 or NVRAM 502 . This process is carried out repeatedly whenever the user desires an MHEG service.

If the existing file is updated or there is a need to download a new file while the user is receiving the service, the MHEG processor searches the contents of the path table and file table recorded in flash memory 505 and then loads the path and the file with the highest reference frequency.

These processes currently affect the user received service not as it is in the background be carried out. And when the MHEG service finally all content that is in the Memory saved due to the previous operation is what the system in terms of hardware in is not overloaded in any way.

If the path table and file table are not recorded in the NVRAM 502 when the user does not receive the MHEG service, the MHEG processor reads the content recorded in the NVRAM 502 and downloads the files that have been used frequently and previously later frequently used by the user. If afterwards the user actually wants the service, the files previously stored in memory can be used immediately by the demultiplexer and the object carousel.

The procedure for creating the path table and File table is created according to the following Described embodiments of the invention.  

According to a first embodiment, the Path table and file table completely deleted if the MHEG service has ended, for example when the User changes the channel in which MHEG data downloaded or turns off a TV, and are then reinitialized when the MHEG service is started. This is appropriate if the MHEG Content is broadcast without regularity whenever its directory structure is changed.

According to a second embodiment, the path table and file table are stored in a recording unit such as the NVRAM 502 and are not deleted, not even when the MHEG service is ended, and are restored when the MHEG service is started. This is appropriate if the MHEG data is transmitted with a certain regularity of the directory structure.

According to a third embodiment, both of the supports the above procedure. Whether the first Embodiment is to be used or the second Application example is optional.

As previously described, the user can use the receive a data service according to the present invention, as soon as a user selects or changes a channel by Primary data required for the data service downloaded and this in a recipient be put before the user starts a data channel chooses. The file path, file name, and the reference frequency are in each case in the corresponding table MHEG processor during the execution of the service  recorded. If the MHEG processor is an actual one File contains, this file is in a table and then the file is saved with a File name that has the highest reference frequency, preferably downloaded by the file table is searched during the execution of the service this will maximize the download time of the file reduce. If the MHEG processor has a Bookmark function, like in a general one Internet search program, the user can also a bookmark service is immediately available become.

Because the present invention comes in several forms can be carried out without their essence or their to refrain from essential features, too be obvious that the previously described Embodiments not by the details of previous description, unless stated otherwise, are limited, but rather comprehensive in their Nature and scope as in the appended claims defined, to be interpreted, and therefore all changes and modifications within the information and Limits of claims, or their equivalents Information and limits are in the enclosed Claims should be included.

Claims (11)

1. Digital data transmission service method comprising:
a first step in which a user interface component transmits information about the current channel to all components when power is applied to a receiver,
a second step in which a service information component creates service information across all channels by receiving data through a data transfer component and informing a data service component of this fact;
a third step in which the data service component initializes each service to primary data of all data service channels by requesting a data list from the service information component, and a send data presentation component informs that a data service is possible,
a fourth step in which, when a user changes a channel, the user interface component transmits information about a new channel; and
a fifth step in which the send data display component receives service data / a service object from the data service component in order to display this / this in a user output device. 2. The method of claim 1, wherein the user has a Changes channel by downloading primary data, which are required for the data service, and the Set the receiver before changing the channel. 3. The method of claim 1, wherein the current Channel information of the first step the information over the service channel that is immediately before the Switching off the receiver was selected. 4. The method of claim 1, wherein the primary data are all the data needed to prepare one Initial screen are required. 5. The method of claim 1, wherein the Data service component only the information of one Data service from the list of service information across all channels. 6. The method of claim 1, wherein the Broadcast data representation component includes: an MPEG Browser, an HTML browser, a subtitle Processor etc.   7. Digital data transmission service method, comprising:
a first step for recording a file name and a reference frequency, a path of a file in the corresponding table by an MHEG processor when the service is executed; and
a second step of downloading a file with a file name that has the highest reference frequency by periodically searching a file table during execution of the service by an MHEG processor. 8. The method of claim 7, wherein the first step comprises:
a first step in which when the MHEG processor detects a required file path from an object carousel through a common interface process, it occupies a memory to record the path and then replaces the pointer-shaped variable element of the path structure with the pointer to indicate the directory path ;
a second step in which the MHEG processor increases the reference frequency of the path by one each time it is replaced and replaces the integer variable element of the path structure with the reference frequency;
a third step in which the path structures generated by this process are recorded in the path table; and
a fourth step in that, when the MHEG processor receives an actual file, it records the file name and reference frequency of that file and records them in the file table. 9. The method of claim 7, wherein when recording the path structure in the table, as in the first Step, the path table and file table be completely deleted when the MHEG service has ended, and then when the MHEG service is started be reinitialized. 10. The method according to claim 7, wherein when the path structure is recorded in the table, as in the first step, the path table and file table are stored in a recording unit such as NVRAM 502 and are not deleted even when the MHEG service is ended, and when the MHEG is started Service to be restored. 11. The method according to claim 7, wherein in the second step, if the existing MHEG files during the MHEG The files are updated with a service Path that has the highest reference frequency as Candidate set for download in advance by the path name of the corresponding Files is searched.