KR20050034122A - Method for processing record program duplicated in multi unit digital satellite broadcasting receiver - Google Patents

Abstract

The present invention tunes multiple channels simultaneously through one main unit, and not only the main unit but each sub unit in a plurality of independent spaces receives a program of a specific channel tuned in the main unit to perform decoding and display. When a recording medium such as an HDD is installed in the main unit and a program is recorded on the HDD by a digital broadcast receiver that allows the main unit and the sub unit to share the HDD, an identifier and / or a user identifier of the unit that set recording is added. In this case, the program list can be displayed for each unit or for each user, so that the user can quickly and conveniently search for his or her program list recorded on the HDD. In addition, when a plurality of units request recording of the same time and the same program, the program is recorded only once on the HDD and the recorded programs are managed by the plurality of unit identifiers, thereby increasing the efficiency of using the HDD.

Description

Method for processing record program duplicated in multi unit digital satellite broadcasting receiver

The present invention simultaneously tunes multiple channels through a main unit having a storage medium and a multi tuner, and simultaneously tunes different channels tuned in the main unit in each of the sub units and the main unit installed in a plurality of independent spaces. The present invention relates to a digital satellite broadcasting receiver capable of watching a video. In particular, when a command to record the same program on the storage medium is input at the same time in a plurality or more units of the digital satellite broadcasting receiver, only one program is recorded and the plurality or more units are recorded. The present invention relates to a method of processing a redundant recording program in a digital satellite broadcasting receiver.

In general, digital satellite broadcasting has spread rapidly to Europe, Japan, Asia, and Africa since the world's first DirecTV in 1994, and can be viewed anywhere in the world. Digital satellite broadcasting is a method of compressing video / audio / additional data and transmitting digitally through satellites in MPEG 2 standard, and is related to a wide coverage area and region which are inherent to satellites compared to other transmission media. Due to the lack of equal broadcasting quality, economics of establishing a satellite broadcasting network, and simplicity of satellite channels, it is mainly led by pay broadcasting companies.

In addition, the receiver capable of receiving the digital satellite broadcast employs a CAS (Conditional Access System) that restricts the reception so that only subscribers can receive the pay broadcast.

The CAS receives a TV program and a data service signal scrambled by a transmitting station in a receiver for pay per channel (PPC) or pay per view (PPV) other than the free and basic channel of satellite broadcasting. It is a system for managing authorized subscribers to receive service by descrambling using a smart card. Here, the PPC is a service that collects a predetermined fee for receiving a channel and is able to receive a broadcast, and the PPV is a service that calculates and charges a fee per program as a reception time. To this end, the CAS operator issues a smart card to the subscriber. The smart card is also referred to as a CAM (Conditional Access Module).

The smart card stores, for example, channel information that a user can view in the memory portion in the case of a pay channel, and usage information in the case of a PPV.

The PPV service allows a user to purchase a movie or sporting event in advance, for example. That is, the user may purchase a paid viewing program through the smart card.

Therefore, it is possible to extract the information stored in the smart card at the request of the limited reception system operator or the receiver. Also, the smart card has a decryption function that can descramble the scrambled signal. Provide the required key.

The digital satellite broadcast includes not only a program but also program guide information. The program guide information is called APG (Advanced Program Guide) in digital satellite broadcasting such as DirecTV, and EPG (Electronic Program Guide) in digital terrestrial broadcasting. The program guide information is additional data information that allows the viewer to more conveniently use the TV to watch TV, and the viewer can obtain information about the current broadcast program and the future broadcast program directly on the screen without a newspaper or other guide medium. .

On the other hand, as people's income levels rise and their lives get better, nowadays, it is common to have more than one television in a household.

However, conventionally, in order to receive digital satellite broadcasts of a plurality of televisions in a home, a satellite broadcast receiver (Integrated Receiver &Decoder; IRD) must be installed for each TV and a smart card is issued, thereby increasing the user burden including subscription fee. . That is, a smart card is issued with one smart card per IRD to limit illegal viewing of non-subscribers.

In addition, when a user purchases a pay-per-view program such as a movie or a sports event through a two-way communication with a satellite broadcasting service provider, a modem is required. In the conventional case, a modem is installed for each IRD. There was this.

Accordingly, in order to solve this problem, the present applicant has a display device, a storage medium (for example, an HDD), a CAS unit, and a modem, and installs a main unit capable of simultaneously tuning multiple channels at a specific location in the home. The sub unit, which is installed in a plurality of independent spaces and has a display device, receives a specific channel tuned from the main unit, performs decoding and display, and records the necessary program by sharing the storage medium with the main unit. It has applied for a digital satellite broadcasting receiver (application number: 2003-39214, filing date: 2003.06.17; hereinafter referred to as '39214') to enable.

In the 39214, the HDD is installed only in the main unit, and the main unit and each sub unit share the HDD so that scheduled recording or real time recording can be performed.

3 shows an example of contents stored in the HDD, that is, a program, according to the recording information set in the main unit or each sub unit, and it is impossible to know which user or which program has been recorded.

At this time, the user or unit that has recorded the only way to find a program recorded by the user is to play each list one by one while displaying the entire recording list or to guess using the recording time. Therefore, it takes a lot of time and inconvenience to find the program recorded by the user or the unit that recorded the video.

In addition, when a command to record the same program at the same time in a plurality of units is input, the same program is recorded more than once in different areas on the HDD. At this time, the capacity of the HDD is limited, but if the same program is recorded more than once, the HDD is wasted and the utilization efficiency of the HDD is reduced.

An object of the present invention is to record the program only once and to manage the recorded program in the plurality of units or more when the command to record the same program to the HDD from a plurality of units of the digital satellite broadcasting receiver such as the '39214' described above A redundant recording program processing method in a digital satellite broadcasting receiver is provided.

A redundant recording program processing method in a digital satellite broadcasting receiver according to an embodiment of the present invention for achieving the above object, including a HDD, a display device, a CAS unit, and a modem and simultaneously tuning a plurality of received channels After demodulating and descrambled the program of the tuned channel, and encrypting and outputting again, the CAS unit, the modem, and the HDD are not provided. In the redundant recording program processing method of the digital satellite broadcasting receiver comprising a plurality of sub-units received from the main unit to decode, decode and display and share the HDD with the main unit,

(a) requesting the user to record the same program in the same time zone in at least a plurality of units of the main unit and the plurality of sub units;

(b) the main unit adding the identifiers of all units requesting the recording of the program to the program and recording only once on the HDD; And

and (c) displaying only a list of programs having the selected unit identifier when the user selects a specific unit when searching the list of programs recorded on the HDD.

In the step (c), even if an identifier of another unit is added to the program having the identifier of the selected unit, the display may be displayed as a program list of the selected unit.

In the step (c), if a list search of all programs recorded in the HDD is selected, and a plurality of unit identifiers are added to one program, a plurality of unit identifiers are added to the program list. It is characterized by displaying.

According to another aspect of the present invention, there is provided a method of processing a redundant recorded program in a digital satellite broadcasting receiver, comprising: (a) requesting a plurality of users to record the same program in the same time zone through the main unit and a plurality of sub units;

(b) the main unit recording all the user identifiers requesting recording of the program to the program and recording only once on the HDD; And

and (c) displaying a list of programs for each user selected when searching the list of programs recorded on the HDD.

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 illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, By the technical spirit of the present invention described above and its core configuration and operation is not limited.

1 is a conceptual block diagram of a digital satellite broadcasting receiver disclosed in '39214', wherein an antenna 101 capable of receiving a digital satellite broadcast in a high frequency band and a satellite in a high frequency band received through the antenna 101 are shown in FIG. A low noise amplifier (LNB) 102 for low noise amplifying a signal, a multi-switching unit 103 for dividing a plurality of satellite signals output from the LNB 102 through each path, and a storage medium HDD is mounted, and the multi-switching unit 103 receives a plurality of satellite signals output through each path, and tunes and demodulates each channel to a channel required by each sub-unit through a multi tuner to form a transport stream (TP). After conversion to the main unit or the sub-unit of the plurality of sub-units stored in the HDD, or the demodulated TP signal or the TP signal stored in the HDD It is installed in a main unit 110 and a separate space, each of which is rammed and outputted to each sub unit, and requests channel selection or purchase information from the main unit, or requests recording and playback of a specific program from an HDD mounted in the main unit. The main unit 110 is composed of a plurality of sub-units 120 that receive a stream of a descrambled specific channel from the main unit 110 and A / V decode and display the same.

2 is a detailed block diagram of the main unit 110, the multi-tuner unit 210 is composed of a plurality of tuners and demodulators (211 ~ 211n), which is output through each path from the multi-switching unit 103 A satellite broadcast signal is received and simultaneously tuned to a channel required by a main unit or a plurality of subunits, demodulated, and output in a TP form.

The CAS unit 250 performs user authentication and descrambling of the main unit and each subunit using the integrated smart card.

At this time, the main unit is equipped with an HDD 290, in the main unit and / or each sub unit, the user can select at least one or more of the recording / playback / display of the currently received broadcast program by reservation or real time. According to the selected value, the multi-channel TP distribution unit 220 outputs and stores the TP stream corresponding to the recording of the TP streams output from the multi-tuner unit 210 to the hard disk 290 and corresponds to the display. The TP stream is output to the CAS unit 250 to perform descrambling, and then distributed to transmit the descrambled stream signal to the TV connected to the main unit and each sub unit. In addition, when the TP stream corresponding to the reproduction is read from the HDD 290, the TP stream is output to the CAS unit 250 to perform descrambling, and then the descrambled stream signal is output to the unit requesting reproduction. The central processing unit (CPU) 200 controls the overall operation of the main unit according to the request of the main unit and each subunit, and also controls the main unit and the satellite broadcasting service provider and the main unit and each subunit. It controls data communication and controls program recording and playback to the HDD 290. In addition, the A / V decoder 230 receives a stream of the main unit, which is descrambled and output from the multi-channel TP distribution unit 220 under the control of the CPU 200, and separates the stream into an audio and video stream. The decoded audio stream and the video stream respectively by a corresponding decoding algorithm and output to a display device (ie, a TV) connected to the main unit 110 for display.

The encryption engine 260 receives the stream of each subunit descrambled by the multi-channel TP distribution unit 220 under the control of the CPU 200 and performs encryption using a predetermined encryption algorithm. The main transceiver 270 transmits the stream encrypted by the encryption engine 260 to each sub unit, or receives recording information, user authentication information, channel selection information, and purchase information transmitted from each sub unit. Output to the CPU 200. The modem 240 is installed only in the main unit 110 and receives user authentication and purchase information transmitted from each sub unit through the CPU 200 and transmits the received information to the satellite broadcasting service provider, and transmits the related information from the satellite broadcasting service provider. It receives and outputs to the CPU (200).

Each sub unit is a sub IRD (Integrated Receiver & Decoder) that receives an encrypted stream signal transmitted from the main unit 110, decrypts it with a predetermined decryption algorithm, and restores the original digital video and audio signal. A display device (e.g., a TV) for displaying the video signal is connected and does not have a satellite tuner, modem, HDD and CAS.

Here, the main unit 110 and each sub unit 120 may be connected by wire or wirelessly. When the main unit and each sub unit are wirelessly connected, there is no need for a cable between the main unit and each sub unit, which makes it easy to install, move, and add each sub unit.

Like the modem, the CAS unit 250 is also installed in the main unit 110 without being installed in each sub unit, and the smart card inserted into the CAS unit 250 is a family smart card. In this case, the satellite broadcasting service provider may provide a subscriber service such as discounting the subscription fee according to the number of sub units controlled by the main unit.

The smart card manages information related to user registration, authentication, and billing through data communication between the main and sub units and the satellite broadcasting service provider, and stores a decryption key for descrambling scrambled data. .

In addition, only one ID and password may be registered in the smart card, or an ID and password may be registered for each main unit and each subunit.

For example, when only one ID and password are registered in the smart card, the main unit and the main unit may be authenticated by inputting the ID and password registered in the smart card only in the main unit. All subunits connected to the unit can be logged on normally. As another example, an ID and a password registered in the smart card may be inputted in the main unit and any subunit to receive user authentication, and when the user authentication is received, the main unit and all subunits may be normally logged on.

If an ID and password are registered for each main unit and each subunit in the integrated smart card, the corresponding subunit may receive user authentication through the main unit after inputting its ID and password. In this case, security can be kept secure for each subunit.

For example, assuming that IDs and passwords are registered for each main unit and subunit in the smart card, the ID and password inputted by the user in subunit B are transmitted to the main unit, and the main unit is transferred from the smart card of the CAS unit. The ID and password of the sub unit B are read, and if the ID and password transmitted from the sub unit B are compared and matched, the sub unit B transmits a signal indicating that user authentication has been performed. Then, the sub unit B is logged on and can be used normally.

In this case, the ID and password of the main unit may be able to receive user authentication in any sub unit as well as the main unit, for example, may be used by the parent. That is, the ID and password of a sub unit may receive user authentication only in the corresponding sub unit, but the ID and password of the main unit may receive user authentication in all sub units as well as the main unit.

In addition, the smart card may store ID and password for each user. In this case, when the user inputs his user ID and password in any unit and authenticates the user, the user can receive a broadcast set for him.

In this case, the HDD 290 is installed in the main unit, and the main unit and each sub unit may share the HDD 290 to perform reservation recording or real-time recording.

Here, the scheduled recording or real time recording can be set by the user in the main unit or the sub unit, and the recording information set in each sub unit is transmitted to the main unit. The user authentication of the main unit or each subunit may use the ID and password of the main unit or each subunit, or may use the user ID and password registered in the smart card for each user.

That is, if the sub-unit is authenticated with the user ID and password when setting the scheduled recording or the real-time recording, the user ID and password are transmitted to the main unit together with the recording information and the authentication is performed with the ID and password of the sub-unit. Upon receipt, the ID and password of the corresponding subunit may be transmitted to the main unit together with the set recording information.

In another embodiment, when setting the scheduled recording or real-time recording in each unit, the identifier and / or user identifier of the desired unit may be selected on the recording setting screen. Here, both the identifier and the user identifier of the desired unit may be selected or only one of them may be selected. At this time, the selected identifier is included in the recording information. In the present invention, selecting the unit identifier will be described as an embodiment.

4 is a diagram illustrating an example of a reserved recording setting screen according to the present invention, wherein a unit selection item is an item for selecting a unit (ie, a main unit and each subunit) to which an identifier is to be added to a program to be recorded. A unit identifier for displaying each unit is displayed.

In the case of FIG. 4, in unit a, the channel is set to 201, the date is June 12, the time is 5 pm, the recording time is 10 minutes, and the repetition is set once.

In the case of real time recording, an ID and a password, for example, an identifier or a user identifier of the corresponding unit authenticated in the unit for setting the current recording are transmitted to the main unit together with the real time recording information.

Meanwhile, the main unit stores its own recording information and recording information of each subunit, and then periodically checks the current time and the recording time in the recording information, and when the recording time is set in the main unit or any one subunit, After tuning and demodulating the program of the reserved channel included in the recording information, the identifier of the unit included in the recording information is added to the program and stored in the HDD.

That is, a program in which an identifier of a unit is added to the HDD is stored as shown in FIG. 5A.

Then, when the user wants to search the list of programs stored in the HDD, the program list may be searched by the identifier of the unit or the user's identifier, or the entire program list may be searched.

For example, assuming that a program is recorded on the HDD as shown in FIG. 5A, when the user selects a program list search and inputs a unit a identifier, only the program list corresponding to unit a is displayed on the screen as shown in FIG. 5B. Is displayed.

In this case, when the main unit and each sub unit are combined, the number of units is plural or more, and since program recording can be set in each unit, the recording of the same program can be set in the plural or more units at the same time.

That is, it is assumed that the channel is set to 201, the date is June 12, and the time is 5 minutes from 10 pm as shown in FIG. 4 in two units having the unit a identifier and the unit b identifier. Conventionally, even if the same program of the same time is recorded, the units set for recording are different, so the program set in the unit a is recorded in one area of the HDD, and the program set in the unit b is recorded in the other area.

In the present invention, in order to prevent the waste of the HDD, the program is recorded only once on the HDD, and instead, the program is managed by two unit identifiers.

For example, in the main unit at 5 pm on June 12, the program of channel 201 is tuned and demodulated, and the unit a and unit b identifiers are added to the demodulated program and stored only once in the HDD. The same program requested by the plurality of units when searching the list of all programs recorded on the HDD indicates that the plurality of unit identifiers are added as shown in FIG.

On the other hand, when searching the list of programs recorded by the same program requested only once from different units by unit, each unit should know that the program selected by the user is recorded. That is, when retrieving the program list by unit, the program list may be displayed in all units that have requested the recording of the same program.

For example, requesting a program list search in unit a displays only the program list having a unit a identifier as shown in FIG. 7A, and requesting a program list search in unit b displays only the program list having a unit b identifier as shown in FIG. 7B. do. That is, the program list corresponding to contents1 is displayed in both the unit having the unit a identifier and the unit having the unit b identifier.

8 is a flowchart illustrating a program recording process and a process of searching a list of recorded programs when a plurality of units according to the present invention requests the same program recording in the same time zone. That is, in the main unit and the plurality of sub units, recording information including a program, a unit identifier, a channel, a date, and a time to be recorded on the HDD can be set. It is assumed that the recording of the same program in the same time zone is set in a plurality of units. (Step 801). Here, if the recording information is set in the sub unit, the set recording information is transmitted to the main unit.

The main unit stores the recording information set by the main unit or the recording information transmitted from the sub unit, and then periodically compares the current time received from the broadcasting station with the set recording information.

When the recording time is reached, the program of the reserved channel set in the recording information is tuned and demodulated, and the unit identifier requesting recording of the program is searched in the recording information, and the identifier of the corresponding unit is added to the demodulated program. Record at step 802. At this time, if a plurality of units request the recording of the program as a result of the search, the identifiers of all the units requesting the recording are added to the above-described program, and only one recording is performed on the HDD.

Then, in the main unit and each sub unit, when the user selects a program list search stored in the HDD (step 803) and selects a specific unit identifier (step 804), only the program list having the identifier of the selected unit is displayed on the screen. Display (step 805). That is, if the selected unit identifier is included in a program to which a plurality of unit identifiers are added, the program list is also included in the display program list. In step 804, an identifier of a specific unit may be input from a user, or if the unit requests a program list search after receiving user authentication with the identifier of the unit, only a program list having an automatically authenticated unit identifier is displayed. You can also

On the other hand, if a specific unit is not selected in step 804, a list of all programs stored in the HDD is displayed on the screen (step 806). In this case, the entire program list may be sorted and displayed for each unit. In particular, when a plurality of unit identifiers are added to one program, the plurality of unit identifiers are added to the corresponding program list.

On the other hand, in the case of real-time recording, the channel requested by the unit for which real-time recording is set is tuned and demodulated, and the unit identifier is added and recorded on the HDD. If the unit is authenticated by the user ID and password rather than the ID and password of the unit, the demodulated program is added with the user's identifier and recorded on the HDD.

That is, the present invention may record in the HDD in addition to the program to record the actual user identifier instead of the identifier of the unit. Similarly, when recording of the same program of the same channel is requested from multiple users, the program is recorded only once on the HDD, and instead, a plurality of user identifiers requesting the program are added to and stored in the program. Thus, the program is managed by a plurality of user identifiers that requested the program.

Terms used in the present invention are terms taken in consideration of functions in the present invention, which may vary according to the intention or custom of those skilled in the art and the definition should be made based on the contents of the present invention. will be. In addition, in the present invention, since the present invention has been described through the preferred embodiment of the present invention, in view of the technical difficulty aspects of the present invention, a person having ordinary knowledge in the art can easily and other embodiments of the present invention. Since other modifications may be made, it is obvious that both the embodiments and the modifications used in the above description belong to the claims of the present invention.

As described above, according to the unit-by-unit recording / reproducing method of the digital satellite broadcasting receiver according to the present invention, a multi-channel is simultaneously tuned through one main unit, and each sub unit as well as the main unit is located in a plurality of independent spaces. The HDD in the digital broadcasting receiver which receives a program of a specific channel tuned in the main unit to perform decoding and display, installs a storage medium such as an HDD in the main unit, and shares the HDD in the main unit and the sub unit. When recording a program on the screen, the user can display the program list by unit or user by adding the identifier and / or the user identifier of the unit that set the recording, so that the user can quickly display his or her program list recorded on the HDD. You can search in time and conveniently.

In addition, when a plurality of units request recording of the same time and the same program, the program is recorded only once on the HDD and the recorded programs are managed by the plurality of unit identifiers, thereby increasing the efficiency of using the HDD.

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.

1 is a conceptual block diagram of a digital satellite broadcast receiver according to the present invention;

Figure 2 is a detailed block diagram of the main unit of Figure 1

3 is a general diagram showing an example of a program list stored in the HDD of the main unit;

4 is a diagram illustrating an example of a reservation recording setting screen according to the present invention.

5A and 5B illustrate an example in which a program list is displayed for each unit after a unit identifier is added to a recorded program and recorded on the HDD.

6 is a diagram illustrating an example in which a plurality of unit identifiers are added to one program and recorded on an HDD.

7A and 7B illustrate an example in which a program list is displayed for each unit when a program is recorded on the HDD as shown in FIG.

8 is a flowchart illustrating an example of a method for processing a redundant recording program in a digital satellite broadcasting receiver according to the present invention.

Explanation of symbols for main parts of the drawings

101: satellite antenna 102: LNB

103: multi-switching unit 110: main unit

200: CPU 210: multi tuner unit

220: multi-channel TP distribution unit 230: A / V decoder

240: modem 250: CAS unit

260: encryption engine 270: EPG DB

280: main transceiver 290: HDD

Claims (8)

A main unit including an HDD, a display device, a CAS unit, and a modem, which simultaneously tunes a plurality of received channels, demodulates, descrambles the programs of the tuned channel, and encrypts and outputs them again; HDD is not provided, but is installed in a separate space with the display device, respectively, a digital satellite composed of a plurality of sub-units that receive a program of a specific channel from the main unit to receive, decode and decode and share the HDD with the main unit In the redundant recording program processing method of the broadcast receiver, (a) requesting the user to record the same program in the same time zone in at least a plurality of units of the main unit and the plurality of sub units; (b) the main unit adding the identifiers of all units requesting the recording of the program to the program and recording only once on the HDD; And and (c) displaying only a list of programs having a selected unit identifier when the user selects a specific unit when searching the list of programs recorded on the HDD. . The method of claim 1, wherein step (c) And displaying the program list of the selected unit even if the identifier of the other unit is added to the program having the identifier of the selected unit. The method of claim 1, wherein step (c) If a list search of all programs recorded in the HDD is selected, and a plurality of unit identifiers are added to one program, the entire program list is displayed after indicating that the plurality of unit identifiers are added to the program list. A redundant recording program processing method in a digital satellite broadcasting receiver. The method of claim 1, When a user requests recording of a program in any one of the main unit and a plurality of subunits, the main unit records only the identifier of the unit requesting the recording of the program in addition to the program and records the same in the HDD. A method of processing redundant recording program in satellite broadcasting receiver. The method of claim 1, And the identifier of a unit added to the recorded program is selectable at the time of setting the recording information. The method of claim 1, And an identifier of a unit added to the recorded program is an identifier of a corresponding unit whose user has been authenticated by an ID and a password of the unit to set up recording. The method of claim 1, wherein step (c) And sorting and displaying the list of all the programs recorded on the HDD by unit. A main unit including an HDD, a display device, a CAS unit, and a modem, which simultaneously tunes a plurality of received channels, demodulates, descrambles the programs of the tuned channel, and encrypts and outputs the encrypted unit; HDD is not provided, but is installed in a separate space with the display device, respectively, a digital satellite composed of a plurality of sub-units that receive a program of a specific channel from the main unit to receive, decode and decode and share the HDD with the main unit In the redundant recording program processing method of the broadcast receiver, (a) requesting a plurality of users to record the same program in the same time zone through the main unit and the plurality of sub units; (b) the main unit recording all the user identifiers requesting recording of the program to the program and recording only once on the HDD; And and (c) displaying a list of programs for each selected real user when retrieving the list of programs recorded in the HDD.