KR20060114194A - Control method of digital broadcasting reception system - Google Patents

Abstract

A control method of a digital broadcasting receiving system is provided to selectively perform a desired function through a function selection screen. At the waiting mode of a digital broadcasting receiving system(202), a control block checks whether there is a power-on manipulation signal in response to the user's input signal(204). If there is a power-on manipulation signal, the control block checks whether a CI module is mounted(206). If a CI module is mounted, the control block provides a control signal to a menu generating block so that a menu screen is generated. The generated menu screen is transmitted to a decoding block and then displayed through a monitor(210). The control block checks whether there is a CI module selection manipulating signal(212).

Description

Control method of digital broadcasting reception system {CONTROL METHOD OF DIGITAL BROADCASTING RECEPTION SYSTEM}

1 is a block diagram of a digital broadcast receiving system suitable for performing a selected function using a PCMCIA slot according to the present invention;

2 is a flowchart illustrating a process of performing a selected function using a PCMCIA slot in a digital broadcast receiving system according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

102: key input block 104: control block

106: CI module block 108: PCMCIA slot

110: menu generation block 112: decoding block

114: Tuning and Demodulation Block 116: Demultiplexer Block

118: memory

The present invention relates to a method for controlling a digital broadcast reception system, and more particularly, whether a CI (Common Interface) module is installed in a digital broadcast reception system capable of detaching a CI module, and whether a CAM version is appropriate. The present invention relates to a control method of a digital broadcast reception system suitable for selectively performing a corresponding function.

As is well known, digital broadcasting includes digital terrestrial broadcasting, digital satellite broadcasting, digital cable broadcasting, and the like, and a digital broadcasting receiving system such as a set top box (STB) for receiving the digital broadcasting signal is used for receiving digital broadcasting signals. Tuner, demodulator for demodulating received digital broadcast signal, demultiplexer and scrambled video and audio for descrambled demodulated digital broadcast signal into video, audio and data It includes a descrambler for the configuration. This descrambler is configured using the CI module.

In addition, the A / V decoder for decoding the descrambled video and audio to reproduce the video and audio signals, the CAM for performing the descrambling operation, the CPU for controlling the operation of each component in accordance with the user's key input In addition, a memory for storing information necessary for controlling the operation of the CPU is included, wherein the CAM may be included in the digital broadcasting system or connected to the digital broadcasting system.

In a digital broadcast receiving system such as a set-top box, the CAM needs to be decoded through a scramble authentication process of a transport stream (TS) due to the characteristics of the set-top box, but the broadcast provider has a large amount of patched software. The version of CAM is changing from time to time.

On the other hand, in a digital broadcast reception system including a CI module, only a broadcast signal capable of descrambling using the CI module can be reproduced, and a broadcast signal for which reproduction is allowed (that is, descrambleable) is determined according to the type of CAM mounted. Therefore, there is a case in which broadcasts that are allowed to be reproduced are duplicated according to a plurality of CAMs having respective broadcast allowed broadcasts, thereby causing unnecessary expense.

Therefore, in the related art, the digital broadcast reception system including the FTA function reproduces only the broadcast signal corresponding to the FTA, and the digital broadcast reception system including the CI module reproduces only the descrambleable broadcast signal according to the mounted CAM. The user was inconvenient to use it.

Accordingly, the present invention is to solve the above-described problems of the prior art, and according to whether or not the CI module is mounted through the PCMCIA slot (Personal Computer Memory Card International Association) in the digital broadcasting reception system, and whether the CAM version suitably It is an object of the present invention to provide a control method of a digital broadcast reception system capable of reproducing a corresponding broadcast signal.

In addition, the present invention is to solve the above-mentioned problems of the prior art, in the digital broadcast receiving system of the digital broadcast receiving system capable of selectively performing data communication according to the menu screen by connecting a mobile multimedia device through the PCMCIA slot The purpose is to provide a control method.

In order to achieve the above object, the present invention provides a control method of a digital broadcast reception system capable of separating a CI module, the process of checking whether the CI module is mounted when the system is powered on, and the CI module is mounted. If not, a process of receiving a broadcast signal corresponding to an FTA, a process of displaying a corresponding menu screen when the CI module is mounted, and performing a function corresponding to an arbitrary item selected through the menu screen. It provides a control method of a digital broadcast receiving system comprising a process of performing.

In addition, in order to achieve the above object, the present invention, when the item of the CI module is selected through the menu screen, checking whether the CAM (Conditional Access Module) version is suitable, and if the CAM version is not suitable A method of controlling a digital broadcast receiving system further includes the step of receiving a broadcast signal corresponding to the FTA, and descrambling the received broadcast signal using the CAM version if appropriate.

In order to achieve the above object, the present invention provides a process of displaying a menu screen displaying stored data information when a data communication item is selected through the menu screen, and downloading the desired data information when the desired data information is selected. It provides a control method of a digital broadcast receiving system further comprising the process.

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

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

A key technical aspect of the present invention is that, unlike the conventional method of controlling only the broadcast signal according to the CI module method or the FTA method in the digital broadcast reception system, when the power is turned on in the digital broadcast reception system capable of separating the CI module. , Checks whether the CI module is installed, receives the broadcasting signal corresponding to FTA when the CI module is not installed, and displays the corresponding menu screen when the CI module is installed, and then displays the CI module items and data communication through the menu screen. When any one of the item and the FTA item is selected, by performing the corresponding function, it is possible to easily achieve the object of the present invention through such technical means.

1 is a block diagram of a digital broadcast receiving system suitable for performing a selected function using a PCMCIA slot according to the present invention, and includes a key input block 102, a control block 104, a CI module block 106, and a PCMCIA slot. 108, menu generation block 110, decoding block 112, tuning and demodulation block 114, demultiplexer block 116, and memory 118. Here, the dotted portion that includes the CI module block 106 and the PCMCIA slot 108 indicates that it is detachable or mountable.

Referring to FIG. 1, the key input block 102 may include, for example, a remote controller and the like to input an operation signal (eg, a power-on operation signal, a selection operation signal, etc.) for operation control of a digital broadcast reception system. When the user inputs a key for turning on the power using a remote controller or the like, which is not shown, for example, the power-on operation signal generated accordingly is transmitted to the control block 104. Perform the function.

In addition, the control block 104 performs overall operation control of the digital broadcasting reception system. When the power is turned on, the control block 104 checks whether the CI module is mounted through the PCMCIA slot 108, and if the CI module is mounted, the memory. In operation 118, the menu screen information for selecting a function is extracted and a control signal for generating a menu screen displaying the same is provided to the menu generation block 110. Here, the menu screen may include a CI module item, a data communication item, and a FTA (Free To Air) item. In addition, between the control block 104 and the PCMCIA slot 108 communicates using I2C communication, in general I2C communication means a communication interface that communicates between the CPU and components in the system.

In addition, the control block 104 provides a control signal for displaying the generated menu screen to the decoding block 112, and the user uses an input means, for example, a remote controller, not shown, through the displayed menu screen. Check if there is a selection operation signal generated when you select the desired item.

Here, when the CI module use item is selected through the menu screen, the control block 104 provides a control signal for tuning and demodulating the corresponding broadcast channel to the tuning and demodulation block 114, and transmits the transmitted broadcast signal. A control signal for separating video and audio signals and data is provided to the demultiplexer block 116, and the video and audio signals are decoded using the CAM included in the CI module block 106 mounted through the PCMCIA slot 108. A control signal for scrambled is provided to the PCMCIA slot 108, and a control signal for decoding and playing the descrambled video and audio signals is provided to the decoding block 112.

When the data communication item is selected through the menu screen, the control block 104 checks whether there is corresponding data included in the PCMCIA slot 108 or included in the CI module block 106, and displays a menu screen for this. The control signal for generating is provided to the menu generating block 110, the control signal for displaying the generated menu screen is provided to the decoding block 112, and when the user selects the desired data, the PCMCIA slot 108 is selected. The selected data is downloaded and stored in the memory 118.

In addition, when the FTA item is selected through the menu screen, the control block 104 provides a control signal for tuning and demodulating the broadcast signal corresponding to the FTA to the tuning and demodulation block 114, and provides a video and audio signal. The control signal for separating into data is provided to the demultiplexer block 116, and the control signal for decoding and playing the video and audio signals is provided to the decoding block 112.

The CI module block 106 may then be mounted or detached from the PCMCIA slot 108 in the digital broadcast receiving system, including a CAM for descrambling the scrambled broadcast signal, to the CI module block 106. When descrambling using the included CAM, the video and audio signals transmitted are descrambled and transmitted to the decoding block 112 through the PCMCIA slot 108, and when the data communication is performed, the selected data is transferred to the PCMCIA slot 108. The control block 104 passes through.

In addition, the menu generation block 110 generates a corresponding menu screen (for example, a menu screen for selecting a function, a data information display menu screen, etc.) according to a control signal provided from the control block 104, and decodes the decode block ( 112).

Subsequently, the decoding block 112 decodes the transmitted video and audio signals and plays them through a monitor and a speaker (not shown), and mixes a menu screen delivered from the menu generation block 110 with a video signal, thereby omitting the illustrated motif. Display on the screen.

The tuning and demodulation block 114 tunes a broadcast signal of one channel among broadcast signals received through an antenna according to a control signal provided from the control block 104, and receives a scrambled broadcast signal or receives an FTA. After receiving the broadcast signal corresponding to the demodulation it is delivered to the demultiplexer block 116.

In addition, the demultiplexer block 116 separates the demodulated broadcast signal into video and audio signals and data so that the data is transmitted to the control block 104, and the video and audio signals are generated according to the control signal provided from the control block 104. Optionally pass to PCMCIA slot 108 or decoding block 112.

On the other hand, the memory 118 extracts the menu screen information for function selection and transfers it to the control block 104, and stores data about the broadcast signal provided from the control block 104 or is provided through data communication. Save (record) the data.

Next, when the CI module is mounted in the digital broadcasting reception system having the above-described configuration, a menu screen for function selection is displayed, and the broadcast signal using the CI module is reproduced or the FTA is transmitted according to the selected item. A process of reproducing a corresponding broadcast signal or performing data communication will be described.

2 is a flowchart illustrating a process of performing a selected function using a PCMCIA slot in a digital broadcasting reception system according to an embodiment of the present invention.

Referring to FIG. 2, in the standby mode of the digital broadcast reception system (step 202), in the control block 104, a user inputs a key for powering on the system using an input unit (not shown), for example, a remote controller. In case of input, it is checked accordingly whether there is a power-on operation signal generated from the key input block 102 (step 204).

As a result of the check in the step 204, if there is a power-on operation signal, the control block 104 checks whether the CI module is mounted by I2C communication with the PCMCIA slot 108 (step 206). Here, I2C communication generally means a communication interface that communicates between the CPU and components in the system.

As a result of the check in the step 206, if the CI module is not mounted, the control block 104 provides a control signal for receiving the broadcast signal corresponding to the FTA to the tuning and demodulation block 114 to receive it (step 208).

On the other hand, as a result of the check in step 204, when the CI module is mounted, the control block 104 extracts menu screen information for selecting a function of the system from the memory 118 and generates a menu screen for displaying the same. The control signal is provided to the menu generation block 110, and accordingly, a menu screen for selecting a function is generated and transmitted to the decoding block 112, which is then displayed through a monitor (not shown) (step 210). Here, the menu screen may include a CI module item, a data communication item, and an FTA item.

In addition, in the control block 104, when the user inputs a key for selecting a CI module item using an input unit (not shown), for example, a remote controller, the CI module selection operation signal generated from the key input block 102. Check if there is a presence (step 212).

As a result of the check in step 212, when there is a CI module selection operation signal, the control block 104 checks whether the CAM version of the CI module block 106 mounted through the PCMCIA slot 108 is suitable (step 214). ).

As a result of the check in step 214, if the CAM version is not suitable, the control block 104 provides a control signal for receiving the broadcast signal corresponding to the FTA to the tuning and demodulation block 114 and receives it (step 208) If the CAM version is appropriate, the received broadcast signal is descrambled using the CAM of the CI module block 106 mounted through the PCMCIA slot 108 (step 216).

Subsequently, the decoding block 112 decodes the transmitted video and audio signals to reproduce broadcast signals through a monitor and a speaker (not shown) (step 218).

On the other hand, if there is no CI module selection operation signal as a result of the check in step 212, the control block 104 checks whether there is a data communication selection operation signal (step 220).

As a result of the check in step 212, when there is a data communication operation signal, the control block 104 receives data information corresponding to the CI module block 106 mounted through the PCMCIA slot 108 and displays the menu information. When the control signal for generating the screen is provided to the menu generation block 110 and the data menu screen is generated and transmitted to the decoding block 112, the control signal is displayed on the monitor (not shown) (step 222).

In addition, the control block 104 is generated from the key input block 102 when the user inputs a key for selecting desired data from among the data displayed on the menu screen using an input unit (not shown), for example, a remote controller. It is checked whether there is a data selection operation signal to be made (step 224).

If there is a data selection operation signal as a result of the check in step 224, the control block 104 downloads the selected data through the PCMCIA slot 108 and stores (records) it in the memory 118 (step 226).

On the other hand, if there is no data communication selection operation signal as a result of the check in step 220, the control block 104 may receive and reproduce a broadcast signal corresponding to the FTA according to the operation signal for selecting the FTA item accordingly. Of course.

Therefore, in the digital broadcasting reception system that can mount and detach the CI module through the PCMCIA slot, a menu screen for selecting a function is displayed according to whether the CI module is mounted, and through this, an arbitrary item (that is, a CI module item and a data communication item) is displayed. , One of the FTA items) may play a broadcast signal, perform data communication, or play a broadcast signal corresponding to an FTA according to the selected item according to the selected item.

As described above, in the present invention, unlike the conventional method of controlling only the broadcast signal according to the CI module method or the FTA method in the digital broadcast reception system, the CI module is mounted in the digital broadcast reception system capable of separating the CI module. If not, receive broadcast signal corresponding to FTA, and if CI module is installed, display menu screen for function selection and perform the function of selected item when any item is selected through menu screen, The receiving system may provide a user interface that performs a selected function through a menu screen, including a CI module detachable through a PCMCIA slot.

In addition, the user may satisfy various needs by selectively receiving and reproducing a broadcast signal corresponding to the CI module or the FTA through a menu screen or performing a data communication function.

Claims (5)

As a control method of a digital broadcast reception system that can separate a CI (Common Interface) module, Checking whether the CI module is installed when the system is powered on; Receiving a broadcast signal corresponding to an FTA when the CI module is not mounted; Displaying a corresponding menu screen when the CI module is mounted; When any item is selected through the menu screen, a process of performing a corresponding function Control method of a digital broadcast receiving system comprising a. The method of claim 1, The method, When an item of the CI module is selected through the menu screen, checking whether a CAM version is suitable; Receiving a broadcast signal corresponding to the FTA when the CAM version is not suitable; Descrambling the received broadcast signal using the CAM version if appropriate The control method of the digital broadcast receiving system further comprising. The method of claim 1, The method, Displaying a menu screen displaying stored data information when a data communication item is selected through the menu screen; When the desired data information is selected, the process of downloading it The control method of the digital broadcast receiving system further comprising. The method according to any one of claims 1 to 3, The method may include mounting the CI module through a PCMCIA slot. The method according to any one of claims 1 to 3, The menu screen includes a CI module item, a data communication item, and an FTA item.

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