KR100588963B1 - Method for managing storage a medium in personal video recorder - Google Patents

Abstract

The present invention is to periodically check the scrambled broadcast stream information received through the tuner in the STB PVR corresponding to the broadcast signal recorded on the storage medium to extract only the broadcast stream information of the non-descrambled state and to delete it from the storage medium. In this case, the process for recording the scrambled broadcast stream information, the process of checking the elapsed time until the recorded broadcast stream information is not descrambled, and if the elapsed time is reached, the descramble is not possible. A process of transforming the broadcast stream information, a process of determining whether there is broadcast stream information that cannot be descrambled, and a process of deleting broadcast stream information that cannot be descrambled, if present. Therefore, there is an effect that can effectively use the space of the storage medium in the PVR.

Description

METHOD FOR MANAGING STORAGE A MEDIUM IN PERSONAL VIDEO RECORDER}

1 is a block diagram for a storage medium management method in a FB according to the present invention,

2 is a detailed flowchart for a method for managing a storage medium in a FB according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: input means 20: STB PVR

21: Tuner part 22: MPEG part

23: storage medium 24: micom

30: output means 31: monitor and speaker

32: OSD

The present invention relates to a method of managing a storage medium in a personal video recorder (PVR), and more particularly, to a set-top box (STB) PVR, which is received through a tuner and stored in a storage medium. The present invention relates to a method of periodically checking scrambled broadcast stream information corresponding to a broadcast signal recorded in a network and extracting and removing only broadcast stream information in a state in which descramble is impossible from a storage medium.

As is well known, the PVR is a personal recording system capable of recording various video signals on a hard disk drive (HDD) to improve the inconvenience of analog VCR tapes having poor image quality over time. In this case, the PVR mainly uses SD quality because it uses MPEG2, a standard of digital STB TV, as a basic format of video.

The PVR basically receives an analog broadcast signal through an STB tuner, compresses the received analog broadcast signal into a digital broadcast signal, records it on a storage medium (for example, an HDD), and simultaneously records the recorded digital broadcast signal on a TV. You can watch through the output.

At this time, the PVR stores the broadcast signal received through the STB tuner in a storage medium. As described above, the stored broadcast signal is stored in the storage medium as scrambled stream information. When the stored scrambled stream information is output to the TV, only viewers who are allowed to receive the descramble can descramble and view the stream information corresponding to the broadcast signal.

In this way, the authorized viewers can watch the stream information in the descrambled state. If the stream information is elapsed for a certain period of time for protection of copyright, the disc descramble is automatically converted to impossible to view. Therefore, stream information that cannot be descrambled is accumulated and stored in the storage medium, and eventually takes up a lot of space of the storage medium. That is, new stream information that can be descrambled should be recorded on a storage medium. However, it is impossible to perform recording due to accumulation of unnecessary stream information.

Accordingly, the present invention has been made to solve the above problems, the object of which is to descramble by periodically checking the scrambled broadcast stream information corresponding to the broadcast signal received through the tuner in the STB PVR recorded on the storage medium The present invention provides a method for managing a storage medium in a PVR that can extract only the broadcast stream information in this impossible state and delete it from the storage medium to secure space in the storage medium.

In the present invention for achieving the above object, the storage medium management method in the PVR, the process of recording the scrambled broadcast stream information, the process of checking the elapsed time until the recorded broadcast stream information is not descrambled, As a result of the check, when the elapsed time is reached, a process of transforming the descrambled broadcast stream information that is not descrambled, a process of determining whether or not the descrambled broadcast stream information exists, and if present in the determination process, And deleting the broadcast stream information.

Hereinafter, a plurality of embodiments of the present invention may exist, and a preferred embodiment will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate the objects, features and advantages of the present invention through this embodiment.

Looking at the core technical gist of the present invention, if there is broadcast stream information that cannot be descrambled among the scrambled broadcast stream information recorded on the storage medium 23 in the STB PVR 20, it is inquired whether the broadcast stream information may be deleted. The deletion query message is output through the OSD 32 in the output means 30, and in response to the deletion permission message being input through the input means 10, broadcast stream information that cannot be descrambled can be deleted. Through such technical means, it is possible to easily achieve the object of the present invention.

FIG. 1 is a schematic block diagram illustrating a storage medium management method in a PVR according to an exemplary embodiment of the present invention, and includes an input means 10, an STB PVR 20, and an output means 30.

The input means 10 includes all means for input, that is, a keyboard, a mouse, a remote controller, a joystick, and the like. Among the signals for driving the STB PVR 20, the PVR recording signal or the PVR playback signal is converted into the STB PVR. It is provided to the microcomputer 24 in (20).

The STB PVR 20 tunes the scrambled broadcast stream information received through the satellite broadcasting antenna Ant S1 and provides the tuner 21 to the MPEG unit 22 and the PVR provided from the microcomputer 24. The MPEG unit 22 performs MPEG compression of the scrambled broadcast stream information input by the tuner unit 21 according to the recording signal, and provides the compressed medium to the storage medium 23, and the scrambled by MPEG compression by the MPEG unit 22. A storage medium 23 for storing (or recording) the stored broadcast stream information and converting the scrambled broadcast stream information stored in the storage medium 23 into a descrambled state according to a PVR playback signal provided from the microcomputer 24. And outputs through the monitor and speaker 31 in the output means 30 and periodically checks the scrambled broadcast stream information stored in the storage medium 23 to determine whether there is broadcast stream information in the state that cannot be descrambled. If there is broadcast stream information in the non-descrambled state, a deletion query message inquiring whether or not the information can be deleted as the broadcast stream information in the descrambleable state exists through the OSD 32 in the output means 30. And a microcomputer 24 for deleting the broadcast stream information of the non-descrambled state stored in the storage medium 23 when the deletion permission message is provided correspondingly.

The output means 30 includes a monitor, a TV, a speaker, an LCD, an LED, a PDP, and the like, which output various videos or text characters so that the viewer can watch them, and the scrambled broadcast stream stored in the storage medium 23. If there is a monitor and speaker 31 which converts the information into a descrambled state and outputs it for viewing by a viewer, and the broadcast stream information in a non-descrambleable state exists in the storage medium 23, whether or not this information may be deleted. An OSD 32 is provided for outputting the deleted query message to be viewed by the viewer.

Referring to the flowchart of FIG. 2, the operation of the storage medium management method in the PVR according to the present invention will be described in more detail based on the above-described configuration.

First, the tuner 21 in the STB PVR 20 tunes and provides the scrambled broadcast stream information received through the satellite broadcast antenna Ant S1 to the MPEG unit 22 (step 200). At this time, the microcomputer 24 in the STB PVR 20 determines whether a PVR recording signal is input from the input means 10 or a PVR playback signal (step 201).

As a result of the determination 201, when the PVR recording signal is input (step 202), the MPEG unit 22 is controlled to record the scrambled broadcast stream information received by the tuner unit 21 on the storage medium 23. (Step 203). Then, the MPEG unit 22 MPEG-compresses and scrambles the scrambled broadcast stream information received and input by the tuner unit 21 according to the recording control of the microcomputer 24 (step 204).

As a result of the determination 201, when a PVR playback signal is input (step 205), the scrambled broadcast stream information recorded on the storage medium 23 is converted into a descrambled state so that the monitor and the speaker in the output means 30 ( 31) to allow the viewer to watch (step 206).

On the other hand, the microcomputer 24 checks the elapsed time until the scrambled broadcast stream information stored in the storage medium 23 cannot be descrambled. In this case, when the elapsed time is reached, the descrambled broadcast stream information is deformed and stored in the storage medium 20. Subsequently, the microcomputer 24 periodically checks the storage medium 20 to determine whether there is modified broadcast stream information in a state that cannot be descrambled (step 207). Here, the reason for performing the determination process 207 is that, when outputting the scrambled broadcast stream information stored in the storage medium 23 through the monitor and the speaker 31 in the output means 30, only the viewer who is allowed to accept The descrambled broadcast stream information can be viewed. If a predetermined time elapses for copyright protection, the descrambled broadcast stream information is automatically converted into impossible and cannot be viewed.

As a result of the determination (207), when there is broadcast stream information in a non-descrambleable state, since there is broadcast stream information in a non-descrambleable state, the OSD 32 displays a deletion query message inquiring whether or not the information can be deleted. (Step 208), and if a delete permission message is provided correspondingly (step 209), the delete command is activated to substantially delete the broadcast stream information in the non-descrambled state stored in the storage medium 23. (Step 210). On the other hand, if there is no broadcast stream information that cannot be descrambled as a result of the determination 207, the periodic check determination process (step 207) is continuously performed as described above.

Therefore, the scrambled broadcast stream information corresponding to the broadcast signal received and recorded through the tuner unit 21 in the STB PVR 20 is periodically checked to extract only the broadcast stream information in a state that cannot be descrambled, and the storage medium 23. ), The space of the storage medium 23 can be used efficiently.

In addition, since the present invention is disclosed as a right within the spirit and claims of the present invention, the present invention may include any modification, use and / or adaptation using general principles, and the present invention as a matter deviating from the description of the present specification. It includes everything that falls within the scope of known or customary practice in the art to which it belongs and falls within the scope of the appended claims.

As described above, the present invention periodically checks the scrambled broadcast stream information corresponding to the recorded broadcast signal received through the tuner in the STB PVR, extracts only the broadcast stream information in the state that cannot be descrambled, and removes it from the storage medium. By doing so, there is an effect that the space of the storage medium can be used efficiently.

Claims (3)

A method of managing a storage medium in a PVR capable of storing scrambled broadcast stream information received through a tuner in a storage medium, Recording the scrambled broadcast stream information; Checking an elapsed time until the recorded broadcast stream information cannot be descrambled; When the elapsed time is reached as a result of the check, transforming the broadcast stream information into which the descramble is impossible; Determining whether the modified descrambled broadcast stream information is present; Deleting the broadcast stream information that is not descrambled when present in the determination process; Storage medium management method in a PVR comprising a. The method of claim 1, Storage medium management method in the PVR, Outputting, via an output means, a deletion query message inquiring whether the broadcast stream information may be deleted; If a delete permission message is input in response to the delete query message, the method further comprises activating a delete command. The method of claim 2, The output means is interlocked with the PVR, and when the non-descrambled broadcast stream information is stored in the storage medium in the PVR, an OSD for outputting the deletion query message inquiring whether the stored information may be deleted. Storage medium management method in the PVR, characterized in that.

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