KR100710366B1 - Method for downloading software using radio frequency - Google Patents

Abstract

The present invention relates to a software download method using radio frequency. The present invention divides different types of software to be written into different models of video devices into a plurality of ROM files, and divides the plurality of ROM files into a predetermined interval including the model name and model version of each video device. Inserting each transport packet into a null packet, upconverting a transport stream including the transport packet to a radio frequency, and wirelessly transmitting the same; and receiving different transport packets transmitted through the radio frequency. And each device writing a ROM file included in the transport packet into its memory unit if the model name and the model version of the transport packet are identical to each other. to provide. Therefore, according to the present invention, it is not necessary to connect and disconnect the equipment for the software upgrade for the video device, so that the process time can be shortened, and the software can be downloaded simultaneously for the various models of the video device. Minimize the time and cost of upgrading.

Software download

Description

Method for downloading software using radio frequency}

1 is a view for explaining a software upgrade system according to the prior art

2 is a diagram illustrating a software download system according to the present invention.

3 is a diagram for explaining a transmitting side in the software download system shown in FIG.

4 is a view for explaining a receiving side in the software download system shown in FIG.

5 is a diagram illustrating a transport packet protocol in a software download system according to the present invention.

6 is a flowchart for explaining an operation of a transmitting side when downloading software using radio frequency according to the present invention.

7 is a flowchart for explaining an operation of a receiving side when downloading software using radio frequency according to the present invention.

* Explanation of symbols for main parts of drawings *

21: Software download device 30: Wireless transmitter

31: data input unit 32: data playback unit

33: modulator 34: up-converter

40: video device 41: tuner

42: signal processor 43: image processor

44: display unit 45: control unit

46, 47: memory section

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to software download, and more particularly, to a software download method using a radio frequency capable of downloading software to a plurality of video devices using radio frequencies.

Broadcasting is a mass media that targets an unspecified number, which is advantageous because it can be compressed like computer data compression because all elements (video, audio, data) are treated digitally.

Therefore, in the case of digital method, one program of HDTV class and three or more programs of SDTV class can be transmitted to one analog channel, and digital signal transmission and processing make it possible to enjoy much clearer screen. In addition, the screen overlapping (ghost) phenomenon, in which radio waves are reflected on obstacles, can be solved on its own, and the HDTV channel can enjoy the realistic screen and stereoscopic sound at home.

In addition, additional data can be added to the digital TV.

For example, multimedia related services such as information related to the program or real time information such as stocks, exchange rates, weather forecasts, and internet information can be enabled.

One of the characteristics of digital TV is interactive and multimedia broadcasting.

Interactive TV is a bi-directional flow of information between a viewer and a broadcaster, not like an analog TV. The viewer can receive various interactive additional information such as basic news, weather, and program-related information from the broadcaster. have. Then, the viewer can access the information service company displayed and connected to the additional information through a telephone line or a separate dedicated line to receive desired information. This type of operation is also called interactive TV.

Multimedia broadcasting is a comprehensive digital broadcasting concept in which a TV program and various additional information that is being broadcast are delivered together in a multimedia form including video, sound, and various data to be displayed on a TV screen and viewers can select and enjoy information.

Digital TV will be developed in the form of a combination of interactive TV and multimedia broadcasting concept.

In addition, various information, including the Internet, is broadcasted, and thus the information can be obtained by TV only without a computer.

At present, there are also studies to use such digital TVs in various ways.

And modern electronic devices, including TVs, are improving performance not only in hardware but also in functional aspects.

In addition, various digital electronic devices must have a proper program or software embedded at the time of product release. Such software is for controlling the operation of the user and the digital electromagnetic period such as a user interface or the digital electronic device itself. Such software also needs to be upgraded to provide better performance products.

Hereinafter, a software upgrade system according to the related art will be described with reference to FIG. 1.

The conventional software upgrade system includes a TV 10 and a software upgrade apparatus 20 connected to an RS-232 port of the TV 10 to perform a software upgrade.

In this case, the software upgrade apparatus 20 may be a computer (laptop, etc.) in which upgrade software is stored.

The operation of the software upgrade system configured as described above is as follows.

First, the software upgrade device 20 is connected to the RS-232 port of the TV where hardware assembly is completed at the product manufacturing plant.

The operator performs the software upgrade by operating the device 20 and writing the software embedded in the device 20 into the memory unit 12 through the control unit 13 of the TV 10.

Subsequently, the software upgrade device 20 is disconnected from the TV 10 and connected to another TV to repeat the above software upgrade operation.

As described above, the software upgrade method according to the related art has the following problems.

First, the process of connecting and disconnecting equipment must be repeated for software upgrades for each electronic device, which increases the process time, reduces work efficiency, and increases the cost of the process.

Second, the specification of digital TV is much more complicated than the specification of analog TV, and the amount of software according to its function is many times higher, which is inefficient and time-consuming when 1: 1 operation is performed when operating equipment for software upgrade.

The present invention is to solve the above problems, the object of the present invention is to simultaneously perform the software download or upgrade required in various types of different video devices using a radio frequency method when downloading or upgrading the software It is to provide a software download method using a radio frequency that can be.

In order to achieve the above object, the present invention divides different types of software to be written into different models of image apparatus into a plurality of ROM files, and divides the plurality of divided ROM files into model names and models of respective image apparatuses. Inserting each transport packet into a null packet at a predetermined interval including a version, upconverting a transport stream including the transport packet to a radio frequency, and wirelessly transmitting the transmission stream; And each of the different video apparatuses receiving the packet writes a ROM file included in the transport packet to its memory if the model name and the model version match in the transport packet. Provides a software download method using frequency.

The transmitted packet further includes a packet identifier, a table identifier, a length of a current section data, a number of a current section, a number of all sections, a ROM type, and an error check byte together with the ROM file, a model name, and a model version. It is preferred to be included.

Each of the transport packets may be wirelessly transmitted through the same on-air download channel through the same transport stream.

The writing of the ROM file may include: receiving a broadcast signal at each tuner unit of a video apparatus of a different model; demodulating a transport packet including the software to be downloaded from the received broadcast signal; Setting a memory area and an address in a first memory unit according to a section data last section number constituting the transport packet and a ROM file size if the transport packet is downloaded by comparing a packet identifier of the transport packet; Copying the ROM file data to the first memory unit in no particular order by checking a model name, a version, and a section number of the ROM file data. When all the ROM file data is copied to the first memory unit, the ROM file data is copied. Writing to the second memory unit of the video apparatus.

The copying of the ROM file data to the first memory unit may include copying the ROM file data to a corresponding address of the first memory unit according to a section number of the ROM file.

In the writing of the ROM file data into the second memory unit, it is preferable to write the software related to the booting process and the software related to the application in a predetermined memory area of the second memory unit according to the ROM type.

Therefore, according to the present invention, it is not necessary to connect and disconnect the equipment for the software upgrade for the video device, so that the process time can be shortened, and the software can be downloaded simultaneously for the various models of the video device. This can minimize the time and cost of upgrading.

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.

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 view for explaining a software download system according to the present invention.

The software upgrade system according to the present invention comprises a software download (or upgrade) device 21, a wireless transmitter 30, and a plurality of different models of video equipment (TV) 40, 50, 60, 70 ( 80) and 90. Here, different models are at least two or more models that have different software embedded therein.

Here, the software download device 21 may be configured as a computer storing software to be downloaded or upgraded in order to write to a video device, and may be configured as a wireless transmitter 30 through its own operation device (keyboard, etc.). send. Here, the software download device 21 and the radio transmitter 30 are connected by an RS-232 system or a normal network (Internet, etc.). In addition, although not shown in the drawings, when the software download device 21 and the wireless transmission device 30 is provided with a wireless (infrared, Bluetooth, etc.) transmission and reception module may be to transmit the software in a wireless transmission and reception method.

The wireless transmitter 30 receives software to be downloaded or upgraded, inserts it into a TS packet, modulates it, and converts it up to a radio frequency for wireless transmission.

The wirelessly transmitted transmission packet is received by the tuners of the video devices 40, 50, 60, 70, 80, and 90, and the software corresponding to the model and version of the image is selectively stored in the memory unit (flash memory). ) To download (or upgrade) the software. That is, it downloads using OAD (On Air Download) method.

FIG. 3 is a diagram for explaining a transmission side system in the software download system shown in FIG. 2.

The transmission side of the software download system according to the present invention comprises a data input unit 31, a data player (MPEG Player) 32, a modulator 33 and an up-converter 34.

Here, the data input unit 31 receives the software to be downloaded from the software download (or upgrade) device 21 and converts it into a ROM file in a section structure (see FIG. 5) constituting section data according to the MPEG 2 standard. Insert it.

In order to obtain section data from a transport stream (TS), a basic MPEG system is used. That is, with a unique packet identifier (PID), a unique table identifier (table ID), and finally an error check byte (eg, cyclic redundancy checking (CRC) calculation) must be correct.

Therefore, in order to put the ROM file into section data (that is, transmission packet), the software to be transmitted is divided into a plurality of ROM files, and the divided ROM file is divided into intervals according to field test or experimental results. Is inserted into a null packet.

In addition, the ROM file inserted in the null packet configures a section structure including a unique PID and various information to be described later.

In the present invention, when downloading software using OAD, when there are a plurality of models of video equipment (different from each other), a plurality of different ROM files (first ROM file, second ROM file, third ROM file) are included in the transport stream. Etc.). In other words, the ROM file is inserted into the middle of the null packet is divided into different kinds of software. This allows multiple models of software to be downloaded per OAD channel, allowing multiple models to download software on one channel. In this case, if only one model is downloaded per channel, it can reduce man-hours and time compared to having to recreate, change, and send multiple processes such as transport streams to change to another model. When the channel is used, other models can solve the problem of waiting for the end of use and increase the channel utilization.

The data reproducing unit 32 reproduces the transmission packet (the MPEG2 file) in which the ROM file transmitted from the data input unit 31 is inserted at a predetermined rate and transmits the transmission packet to the modulation unit 33.

The modulator 33 modulates the transport stream including the transport packet transmitted at a constant transmission rate into transmission data.

The up-converter 34 up-converts the transmission data modulated by the modulator to a radio frequency band that can be tuned by the tuner of the video device and wirelessly transmits through the antenna.

Such a transport packet will be described with reference to FIG. 5.

FIG. 4 is a diagram for explaining a receiving side system in the software download system shown in FIG. 2.

The receiving side of the software download system according to the present invention includes a tuner unit 41, a signal processing unit 42, an image processing unit 43, a display unit 44, a control unit 45, a first memory unit 46, and a second unit. It is comprised of the memory part 47.

The tuner 41 tunes a broadcast channel and receives a transport stream TS at a radio frequency transmitted through a transmitting antenna.

The signal processor 42 performs demodulation on information signals including video, audio, and packet data in a broadcast channel, and transmits a transport packet in the demodulated transport stream to the controller 43.

The image processor 43 performs scaling or the like to display the image data processed by the signal processor 42 on the display 44.

The display unit 44 displays image and information data.

The controller 45 controls the entire video apparatus, and compares the packet identifier in the section structure (see FIG. 5) of the download (or upgrade) related transport packet (section data) to determine whether it is a predetermined specific packet (packet related to software download). After judging, and also checking the model name, model version and section number of the section data, and downloading them from the ROM file data of the first section data to the ROM file data of the last section data in no particular order, in the first memory section 46, When all the ROM file data is downloaded to the first memory unit 46, the ROM file data of the first memory unit 46 is written to the second memory unit 47. The controller 45 multiplies the last section number by the size of the ROM file data to preset a memory area and an address related to the software download in the first memory unit 46. Therefore, even if the section data is not the first section data, the controller 45 can download the ROM file data in advance to the address of the first memory unit 46 corresponding to the section number.

The first memory unit 46 may be configured as a DRAM as a temporary memory, and the second memory unit 47 may be configured as a read / write flash memory.

5 is a diagram illustrating a transport packet protocol in a software download system according to the present invention.

In the transport packet protocol (section structure) according to the present invention, when a ROM file is inserted into a transport packet of a TS, the PID of each section data uses a specific value related to software download or upgrade. The table identifier also uses a specific value.

Section length indicates the location of the CRC through the length of the current section data.

In addition, the section number indicates the number of the current section data, and the last section number indicates the number of the entire section data, so that the receiver knows the progress of receiving the current section data. To be able.

The model name, model version and ROM type are included in all section data.

The ROM type allows processing of ROM file data that should be stored in a different location according to the nature of the program. For example, the program in charge of the boot process and the main program in total operation are recorded in different locations in the second memory unit.

ROM file data is divided ROM file data obtained by dividing the software to be transmitted.

Accordingly, in the present invention, ROM file data of the same model number and version may be temporarily stored in the first memory unit in no particular order according to the model number and version included in all section data.

6 is a flowchart for explaining an operation of a transmitter in a software download method using radio frequency according to the present invention.

In the software download method using the radio frequency according to the present invention, the software download apparatus inputs the software to be written into the video device to the wireless transmission apparatus (S11). In this case, different softwares of different types of imaging apparatuses are input.

Accordingly, the wireless transmission apparatus that receives the different types of software to be written into the video devices of the different models divides the different types of software into a plurality of ROM files meeting the MPEG2 transmission standard (S12). At this time, the data input unit 31 of the radio transmitter has a ROM file in a section structure (see FIG. 5) that configures section data according to the MPEG 2 standard for different types of software to be downloaded to different models of video equipment. In the middle of a null packet, a ROM file (eg, first to third ROM files) in which different types of software are divided is inserted.

Next, a transport packet including a model name, a model version, and a ROM type is generated in the divided ROM file (S13). The transport packet also includes a packet identifier, a table identifier, a cyclic redundancy checking (CRC), a section length, a current section number, a total number of sections, and an error check byte.

Then, the transmission packet is reproduced at a constant transmission rate (S14).

Next, the transport stream including the reproduced transport packet is modulated (S15).

The modulated transport stream is upconverted to a radio frequency of a specific OAD channel (S16).

7 is a flowchart for explaining an operation of a receiving side of a software download method using radio frequency according to the present invention.

In the receiving operation during the software download according to the present invention, video devices of different models receive broadcast signals through respective tuner units and transmit them to the signal processor (S20).

Subsequently, the signal processor of each video apparatus demodulates the broadcast signal and transmits the transport packet in the demodulated transport stream to the controller. Accordingly, the controller compares the PID of the MPEG-2 transport packet (TP) data in the transport stream with the packet data to be downloaded (or upgraded) to the memory unit (second memory unit) of the video device and compares the section data corresponding to the case. Filter (S21).

Next, the memory area and the address of the first memory unit are set according to the last section number of the section data and the ROM file size (S22).

Next, the contents of each section data are parsed to obtain a section number and a length as shown in FIG. 5, and a core section that is actual ROM file data. Data (core section data) is obtained (S23).

Then, the model name and version and the section number are checked in section data as shown in FIG. 5 (S24). If this is not the case, no software download is performed.

Check result (S24) If the model name and version match, and the section number is the section number not downloaded, the ROM file is copied to the memory area of the first memory unit corresponding to the address set according to the section number (S25). In other words, by downloading the software according to the model name, version and section number, the ROM file data is copied to the first memory unit without any particular order. Therefore, even if the section data reception is interrupted by the broadcasting environment, except that the section number is the same until the section data in the corresponding order is received, the model name and version match without stopping copying to the first memory unit. Will continue to be copied.

Subsequently, when the ROM file of all the section data is copied (S26), the CRC or checksum of the ROM file data on the first memory unit is calculated to determine whether an error has occurred, and if it is corrected, the compression (MPE2) is decompressed and the second memory is decompressed. Write to the unit (S27). At this time, the software related to the booting process and the software related to the application are written in the memory area of the second memory unit. Of course, if an error occurs, you will need to download the necessary software again.

If the software to be downloaded (or upgraded) is properly downloaded to the second memory unit, the video device is rebooted (S28).

Using this radio frequency, it is 45 seconds for a 1.3MB ROM file (2 minutes 10 for RS-232) and 2 minutes for a 3.4MB ROM file (5 minutes 40 for RS-232). Compared to the case, it can be seen that the time required for downloading can be shortened.

In addition, since all section data includes section names and versions, they can be downloaded in no particular order, reducing the time required to download more than if the first section data had to be received first.

The software download method using the radio frequency according to the present invention has the following effects.

First, the process time is shortened because there is no need to connect and disconnect equipment for software upgrade of video equipment.

Second, software downloads for multiple models of video devices can be performed at the same time, thus maximizing work efficiency, minimizing time and cost associated with software downloads or upgrades.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (6)

Different types of software to be written on different models of video equipment are divided into a plurality of ROM files, and the divided plurality of ROM files are nulled at a predetermined interval including the model name and version of each of the video apparatuses. Inserting into each packet into each transport packet; Up-converting a transport stream including the transport packet to a radio frequency for wireless transmission; And And writing the ROM file included in the transport packet into a memory unit of the video apparatus that has received the transport packet, if the model name and the model version match. The method of claim 1, In the transmitted transport packet, In addition to the ROM file, the model name, and the model version, the packet identifier, the table identifier, the length of the current section data, the current section number, the total number of sections, the ROM type, and an error check byte are further included. How to download software. The method of claim 1, And wherein each of the transport packets is wirelessly transmitted through the same on-air download channel through the same transport stream. The method of claim 1, The step of writing the ROM file, Receiving a broadcast signal from each tuner unit of a video device of different models; Demodulating a transport packet including the software to be downloaded from the received broadcast signal; Setting a memory area and an address in a first memory unit according to a section data last section number constituting the transport packet and a ROM file size if the transport packet is downloaded by comparing a packet identifier of the transport packet; Checking the model name and version of the section data and the section number and copying the ROM file data to the first memory unit in no particular order; And writing all the ROM file data to the second memory unit of the video apparatus when all the ROM file data is copied to the first memory unit. The method of claim 4, wherein Copying the ROM file data to the first memory unit may include: And copying to the corresponding address of the first memory unit according to the section number of the ROM file. The method of claim 4, wherein Writing the ROM file data to the second memory unit; And writing software related to a booting process and software related to an application according to the ROM type in a predetermined memory area of the second memory unit.

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