KR101006948B1 - Interrupt combined managing device of digital broadcasting data and method for the same - Google Patents

Abstract

The present invention relates to an integrated process of interrupt processing of digital broadcast data. Particularly, when a FIC interrupt and an MSC interrupt occur in a host, the present invention integrates it to generate a new interrupt, and the baseband processor generates FIC data, MSC data, and baseband in response. The present invention relates to an integrated interrupt processing technology for digital broadcast data provided by a host through an interface channel after generating packetized data by integrating state information. According to the present invention, by integrating multiple interrupts, the frequency of interrupt occurrence of the host may be reduced, and the complexity of software configuration may be more simply implemented. In addition, since it can be converted to TS packet data even if it is not TS data, data can be transmitted quickly using the TS interface between the baseband processor and the host as an interface channel, and multiple data can be transmitted using one interface so that the host interface It is effective to lower the unit price.

Digital Broadcast, DMB, DAB, Interrupt, Baseband, FIC, MSC

Description

Interrupt integrated processing device and method for digital broadcast data {INTERRUPT COMBINED MANAGING DEVICE OF DIGITAL BROADCASTING DATA AND METHOD FOR THE SAME}

The present invention relates to an integrated process of interrupt processing of digital broadcast data. Particularly, when a FIC interrupt and an MSC interrupt occur in a host, the present invention integrates it to generate a new interrupt, and the baseband processor generates FIC data, MSC data, and baseband in response. The present invention relates to an integrated interrupt processing technology for digital broadcast data provided by a host through an interface channel after generating packetized data by integrating state information.

A typical digital broadcast receiving system consists of an RF tuner, baseband chip, and multimedia processor chip.

The RF tuner receives and broadcasts digital broadcast signals such as DMB and DAB in the form of analog signals, converts them to baseband frequencies, and delivers them to the baseband chip.

Then, the baseband chip converts the received broadcast signal into a digital signal by A / D conversion and restores the data signal therefrom. In addition, the multimedia processor chip restores video and audio by using an A / V decoder to play and view a user.

In this case, the data signal reconstructed by the baseband chip includes not only data about video and audio but also a lot of control information necessary to interpret the data. Therefore, in order to receive and use data restored from the baseband chip, a data request command must be made to the baseband chip.

In the case of a DMB system, a video reception is possible in a mobile environment. Since a digital video signal is provided in the form of a TS stream, the data capacity is very large. On the other hand, in the case of a DAB system, since the audio signal mainly excludes the video, the data capacity of the DAB system is smaller than that of the digital video signal in the form of a TS stream.

As described above, since the characteristics of each data included in the digital broadcast signal vary according to the digital broadcast reception system, there is a problem in that a data request between the baseband chip and an external module and a provision method thereof are complicated.

An object of the present invention is to increase the interrupt generation period by integrating a plurality of interrupts requesting data in the digital broadcast processing technology to generate a new interrupt, and to integrate the multiple data when providing data according to the interrupt generation, and then packetized and transmitted This provides an integrated process of interrupt processing of digital broadcast data that can provide multiple data through one interface channel.

An integrated interrupt processing apparatus for digital broadcast data according to the present invention includes a host for generating an FIC interrupt and an MSC interrupt; A packet request interrupt generation unit for generating a packet request interrupt by integrating the FIC interrupt generated by the host and the MSC interrupt; And one or more interfaces connected to a host, receiving digital broadcast signals from an RF tuner, restoring FIC data and MSC data, and integrating corresponding FIC data, MSC data, and baseband status information when a packet request interrupt occurs. And a baseband processor for packetizing the packet data and generating the packet data and providing the packet data to the host through the interface.

In addition, in the interrupt integrated processing apparatus for digital broadcast data according to the present invention, the baseband processor inserts a header at the front end and baseband status information at the end for each individual FIC data and MSC data, and then adds the FIC data and the MSC data. It is desirable to generate packet data by connecting the data.

In addition, in the interrupt integrated processing apparatus for digital broadcast data according to the present invention, the baseband processor inserts a header at the front end and adds baseband status information at the end for each individual FIC data and MSC data, and then spaces between the headers. Add one or more NULL data at the end for each baseband status information to be an integer multiple of 188 bytes, generate TS packet data by connecting FIC data and MSC data, and extend the data transmission path to the TS interface to TS packet data. It is desirable to provide to the host.

The packet request interrupt generator generates a packet request interrupt by including information on the number of requested FIC interrupts and MSC interrupts in the integrated signal processing processor for digital broadcast data. The baseband processor generates the packet request interrupt. It is preferable to generate packet data by integrating a certain number of FIC data and MSC data according to the interrupt number information of the interrupt.

In accordance with another aspect of the present invention, a method for processing interrupt integration of digital broadcast data includes: (A) generating an FIC interrupt and an MSC interrupt at a host; (B) integrating the FIC interrupt and the MSC interrupt to generate a packet request interrupt; (C) integrating FIC data, MSC data, and baseband status information in response to the packet request interrupt in the baseband processor; (D) packetizing the integrated data to generate packet data; And (E) providing the packet data to the host through an interface connected with the host.

In the interrupt integration processing method of the digital broadcast data according to the present invention, the step (C) includes inserting a header at the front end and adding baseband status information at the end for each FIC data corresponding to the packet request interrupt; Inserting a header at the front end and baseband status information at the end for each MSC data corresponding to the packet request interrupt; And concatenating data to generate packet data.

In the interrupt integration processing method of the digital broadcast data according to the present invention, the step (C) includes inserting a header at the front end and adding baseband status information at the end for each FIC data corresponding to the packet request interrupt; Inserting a header at the front end and baseband status information at the end for each MSC data corresponding to the packet request interrupt; Adding at least one NULL data at the end for each baseband state information such that the interval between headers is an integer multiple of 188 bytes; And connecting the data to generate TS packet data.

According to the present invention, by integrating multiple interrupts, the frequency of interrupt occurrence of the host may be reduced, and the complexity of software configuration may be more simply implemented.

In addition, since it can be converted to TS packet data even if it is not TS data, data can be transmitted quickly using the TS interface between the baseband processor and the host as an interface channel, and multiple data can be transmitted using one interface so that the host interface It is effective to lower the unit price.

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

1 is a block diagram showing the overall configuration of an interrupt integrated processing apparatus for digital broadcast data according to the present invention.

The digital broadcast receiver 10 includes an RF tuner 11, a baseband processor 12, a host 13, and a packet request interrupt generator 14.

The RF tuner 11 receives digital broadcast signals such as DMB and DAB, and converts them into signals that can be processed by the baseband.

The baseband processor 12 receives the filtered digital broadcast signal from the RF tuner 11 and restores the FIC data and the MSC data. The fast iinformation channel (FIC) data includes control information necessary to interpret the configuration of the MSC data. The MSC (main service channel) includes a DAB stream, a TS stream, other data, and the like.

In addition, the baseband processor 12 is provided with one or more interfaces connected to the host 13 and configured to provide data in response to receiving an interrupt from the host 13 or another external module.

At this time, the baseband processing unit 12 has a function of integrating FIC data, MSC data, and baseband status information when receiving a packet request interrupt from an external module, packetizing them, and providing the packet to the host 13. When the packet request interrupt includes interrupt number information, packet data is generated by integrating a predetermined number of FIC data and MSC data according to the interrupt number information.

Here, the baseband state information means information indicating the state of the baseband, such as LOCK, BER, SNR, ETC, and the like.

-LOCK: Baseband sync information, (Time sync (CTO, FTO lock), Frequency sync (CFO, FFO lock), etc.)

BER: bit error rate

-SNR: signal to noise ratio

ETC: other information, other baseband status information

The baseband processor 12 generates packet data by integrating the FIC data, the MSC data, and the baseband status information. There are two methods of generating packet data, a method of generating general packet data and a method of generating TS packet data. . This will be described in more detail with reference to FIGS. 3 and 4.

The host 13 includes an audio decoder and a video decoder to perform data reproduction and output, and is connected with a user interface to control the output of the A / V signal.

At this time, the host 13 generates an FIC interrupt requesting FIC data and an MSC interrupt requesting MSC data at regular intervals. In general, FIC interrupts can be set to occur every 24msec and MSC interrupts can be set to occur every 24msec. For example, if one FIC interrupt occurs every 24msec and three MSC interrupts every 24msec, one interrupt occurs every 6msec on average.

The packet request interrupt generator 14 integrates the FIC interrupt generated by the host and the MSC interrupt to generate a packet request interrupt. When the generated packet request interrupt is provided to the baseband processor 12, as described above, the baseband processor 12 integrates the FIC data, the MSC data, and the baseband status information, and packetizes the host packet to form the packet. Will be provided.

That is, instead of sending FIC interrupts and MSC interrupts generated from the host directly to the baseband processor 12, if a certain amount of FIC interrupts and MSC interrupts are collected and integrated into one interrupt, multiple interrupts can be processed at the same time. It has the effect of increasing the period.

At this time, the packet request interrupt generation unit 14 includes the information on the number of requesting FIC interrupts and MSC interrupts in the packet request interrupt so that the baseband processor 12 can determine the number of FIC data and MSC data to be included in the packet data. Can be set to

FIG. 2 is a diagram illustrating a process of generating packet data by integrating FIC data, MSC data (DAB data, TS data), and baseband state information, and then transmitting them to a host using various interfaces as channels.

When a packet request interrupt occurs, the baseband processor 12 integrates FIC data, MSC data (DAB data, TS data, etc.), baseband status information, and inserts a header to distinguish each data. In FIG. 2, a header is inserted at the beginning of each FIC data, DAB data, and TS data, and baseband state information is inserted at the end of each data.

In FIG. 2, packet data is completed by adding a header indicated by 'Global Header' to the beginning of the packetized data.

The completed packet data may be transmitted through various interface channels connecting the baseband processor 12 and the host 13. That is, interface channels such as SPI, TS, HPI, ETC, and the like shown in FIG. 2 may be used, and the meaning of each interface channel is as follows.

-SPI interface: Serial Peripheral interface, transmits data serially with peripheral devices

-TS interface: Transport stream interface, transmitting TS data to peripheral devices

HPI Interface: Host Parallel Interface, transmits data in parallel with peripheral devices

-ETC interface: other data communication methods (USB, SDIO, etc.).

In this case, in order to use the TS interface, the packet data must be generated in the TS format, and thus undergoes a slightly different process. This will be described in more detail later with reference to FIG. 4.

3 is a diagram illustrating a structure of packet data generated when a NON TS interface is used as a channel.

As described above with reference to FIG. 2, a header is inserted at the front end and baseband state information is added at the end for each individual FIC data and the MSC data, and then packet data is generated by connecting the FIC data and the MSC data.

At this time, the baseband status information is inserted for each data because the baseband status information to be read when the host 13 receives the FIC data is different from the baseband status information to be read when the MSC data is received. . Therefore, baseband state information is added to each data.

The packet data thus completed is provided to the host 13 through the remaining interface channels except for the TS interface.

4 is a diagram illustrating a structure of TS packet data generated when a TS interface is used as a channel.

In order to generate packet data in TS format, it is necessary to divide each packet into 188 bytes, which is a minimum unit of TS. Therefore, as in the process of generating the general packet data described above with reference to FIGS. 2 and 3, first, a header is inserted at the front end and baseband state information is added at the end for each individual FIC data and MSC data.

TS packet data is generated by connecting FIC data and MSC data after filling one or more NULL padding data at each end of baseband state information such that the interval between headers is an integer multiple of 188 bytes.

The TS packet data generated as described above can be transmitted to the host through the TS interface. Since the TS interface has a faster data transmission rate than other interfaces, the TS packet data can be transmitted more efficiently than the case of transmitting the NON TS packet data.

5 is a flowchart showing the overall operation of the interrupt integration processing method of the digital broadcast data according to the present invention.

First, the host generates an FIC interrupt and an MSC interrupt (ST10).

Then, the FIC interrupt and the MSC interrupt are integrated to generate a packet request interrupt (ST20).

In response to the packet request interrupt, the baseband processor generates packet data by integrating FIC data, MSC data, and baseband state information in response to the packet request interrupt (ST30). In this case, the FIC data and the MSC data are data recovered from the digital broadcast signal provided through the RF tuner.

In this case, packet data may be generated as NON TS packet data or TS packet data according to an interface channel for transmitting packet data. This will be described in more detail in FIGS. 6 and 7 to be described later.

Finally, the packet data including the FIC data, the MSC data, and the baseband status information is provided to the host through an interface connected to the host (ST40). Thereafter, the host recovers the packet data into FIC data, MSC data, and baseband state information to process the data according to its original purpose.

FIG. 6 is a flowchart illustrating a first embodiment of generating general packet data in step ST30 of generating packet data after data integration in FIG. 5.

As a method of generating packet data that can be transmitted through an interface channel other than the TS interface channel, the same contents as those described with reference to FIGS. 2 and 3 are described.

First, a header is inserted at the front end and baseband status information is added at the end for each FIC data corresponding to the packet request interrupt (ST31).

Then, a header is inserted at the front end and baseband status information is added at the end for each MSC data corresponding to the packet request interrupt (ST32).

Finally, packet data is generated by connecting the processed data through the above process (ST33).

In this way, each data can be identified through a header, and baseband status information is added to each data to be useful for data reading.

Thereafter, the generated packet data is transmitted to the host through an interface channel other than TS.

FIG. 7 is a flowchart illustrating a second embodiment in which TS packet data is generated in step ST30 of generating packet data after data integration in FIG. 5.

As a method of generating packet data that can be transmitted through a TS interface channel, the same contents as those described in FIG. 4 are described.

First, a header is inserted at the front end and baseband status information is added at the end for each FIC data corresponding to the packet request interrupt (ST35).

Then, a header is inserted at the front end and baseband status information is added at the end for each MSC data corresponding to the packet request interrupt (ST36).

Up to this point, the process of generating the NON TS packet data described above is the same. At this time, since TS data should be divided into 188 bytes, each packet should be adjusted to an integer multiple of 188 bytes.

Therefore, one or more NULL data is further added at the end of each baseband state information so that the interval between the header and the header of each data becomes an integer multiple of 188 bytes (ST37). That is, NULL data is continuously filled to fit 188 bytes.

Finally, the TS packet data is generated by connecting the processed data through the above process (ST38).

TS packet data generated through the above process can be transmitted at high speed through the TS interface.

Although the present invention has been described in more detail with reference to the examples, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit 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 protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a block diagram showing the overall configuration of an interrupt integrated processing apparatus for digital broadcast data according to the present invention;

FIG. 2 is a diagram illustrating a process of generating packet data by integrating FIC data, MSC data (DAB data, TS data), and baseband state information, and then transmitting them to a host using various interfaces as channels.

3 is a diagram illustrating a structure of packet data generated when a NON TS interface is used as a channel;

4 is a diagram illustrating a structure of TS packet data generated when a TS interface is used as a channel;

5 is a flowchart showing the overall operation of the interrupt integrated processing method of digital broadcast data according to the present invention;

FIG. 6 is a flowchart illustrating in more detail a first embodiment of generating general packet data in step ST30 of generating packet data after data integration in FIG. 5;

FIG. 7 is a flowchart illustrating a second embodiment in which TS packet data is generated in step ST30 of generating packet data after data integration in FIG. 5.

Claims (7)

A host generating FIC interrupts and MSC interrupts; A packet request interrupt generator for generating a packet request interrupt by integrating the FIC interrupt and the MSC interrupt generated in the host; And It is provided with one or more interfaces connected to the host, and receives a digital broadcast signal from an RF tuner to recover FIC data and MSC data, and integrates corresponding FIC data, MSC data, and baseband status information when the packet request interrupt occurs. A baseband processor for generating packet data by packetizing the packet and providing the packet data to the host through the interface; Interrupt integrated processing device of the digital broadcast data comprising a. The method according to claim 1, The baseband processing unit, Interrupt integration of digital broadcast data comprising generating a packet data by inserting a header at the front end and a baseband status information at the end for each individual FIC data and MSC data, and then concatenating the FIC data and the MSC data. Processing unit. The method according to claim 1, The baseband processing unit, For each individual FIC data and MSC data, a header is inserted at the front and baseband status information is added at the end, and at least one NULL data is inserted at the end for each baseband status information so that the interval between each header is an integer multiple of 188 bytes. Further, after generating TS packet data by connecting the FIC data and the MSC data, the data transmission path is extended to a TS interface to provide the TS packet data to the host. Processing unit. The method according to any one of claims 1 to 3, The packet request interrupt generator generates the packet request interrupt by including information on the number of requesting FIC interrupts and MSC interrupts. And the baseband processor generates packet data by integrating a predetermined number of FIC data and MSC data according to the interrupt number information of the packet request interrupt. (A) generating a FIC interrupt and an MSC interrupt at the host; (B) integrating the FIC interrupt and the MSC interrupt to generate a packet request interrupt; (C) integrating FIC data, MSC data, and baseband state information in response to the packet request interrupt in a baseband processor; (D) packetizing the integrated data to generate packet data; And (E) providing the packet data to the host through an interface connected with the host; Interrupt integration processing method of the digital broadcast data comprising a. The method according to claim 5, Step (C) is Adding FIC data state information for inserting a header at the front end and baseband status information at the end for each FIC data corresponding to the packet request interrupt; Adding MSC data status information for inserting a header at the front end and baseband status information at the end for each MSC data corresponding to the packet request interrupt; And Integrating the FIC data added with the header and baseband state information in the adding FIC data state information and the MSC data added with the header and baseband state information in the adding the MSC data state information; Interrupt integrated processing method of the digital broadcast data, characterized in that comprises a. The method according to claim 5, Step (C) is Adding FIC data state information for inserting a header at the front end and baseband status information at the end for each FIC data corresponding to the packet request interrupt; Adding MSC data status information for inserting a header at the front end and baseband status information at the end for each MSC data corresponding to the packet request interrupt; Adding at least one NULL data at the end for each baseband state information such that the interval between the headers is an integer multiple of 188 bytes; And Integrating the FIC data added with the header and baseband state information in the adding FIC data state information, the MSC data added with the header and baseband state information in the adding MSC data state information, and the NULL data; Interrupt integrated processing method of the digital broadcast data, characterized in that comprises a.

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