KR20070036315A - Method for pvr to digital image data of backup - Google Patents

Abstract

The present invention relates to a digital video data backup method of a recording and reproducing apparatus.

The present invention provides a method of recognizing a connection with a recording / playback apparatus in a computer, displaying a recording data list stored in the recording / playback apparatus, selecting recording data from the displayed recording data list, and selecting the selected recording. After receiving the encryption code to protect the copyright of the data, converting to be compatible with the file system of the computer and the step of backing up the converted recording data to the storage unit of the computer.

According to the present invention, since the recording data stored in the recording / reproducing apparatus is backed up to the computer, the storage capacity of the recording / reproducing apparatus can be managed efficiently, and the recording data backed up to the computer can be stored in high quality for a long time.

PVR, backup, digital video data

Description

Backup method of digital image data of recording and playback device {Method for PVR to Digital image data of backup}

1 is a block diagram showing the configuration of a recording and reproducing apparatus of the prior art.

Fig. 2 is a block diagram showing a configuration in which a conventional recording and reproducing apparatus and DVHS are connected to an IEEE 1394 interface.

3 is a block diagram showing a configuration for backing up recording data stored in a recording / reproducing apparatus of the present invention to a computer.

4 is a flowchart illustrating a process of backing up recording data stored in a recording / reproducing apparatus of the present invention to a computer.

FIG. 5 is a flowchart illustrating a method of restoring recording data backed up to a computer in the recording and reproducing apparatus of FIG. 4 of the present invention. FIG.

Explanation of symbols for the main parts of the drawings

300: communication unit 301: interface means

302 control unit 304 image data list module

306: recording data conversion unit 308: encryption module

310: file system conversion module 312: storage

314: Computer

The present invention relates to a method for backing up recording data stored in a recording / playback apparatus to a computer. In order to efficiently manage a storage unit of a recording / playback apparatus for storing recording data, the stored recording data is extracted and converted into a file system of a computer for backup. It relates to a recording data backup method of the recording and playback apparatus.

Personal Video Recorder (PVR) is a device that can store digital broadcasts on the hard disk. It is a basic function to record, time-shift, instant replay and other trick play. It provides much better functionality than the existing video tape recorder (VTR).

Moreover, the recording and playback device has the advantage that it can store HD-quality high-definition digital broadcasting at any time on the hard disk. The summary function of the broadcasting data of the recording data is not only easy access to the recorded program, but also many recordings stored on the hard disk. The convenience of recognizing data can greatly improve the convenience of retrieving recorded data.

1 is a block diagram showing the configuration of a recording and reproducing apparatus of the prior art.

As shown in FIG. 1, a recording and reproducing apparatus (PVR: Personal Video Recorder) capable of storing digital image data includes an IR receiver 100 for receiving remote control code information selected by a user, a controller 110, and an operating program. A memory unit 120 for storing the data, a tuner unit 130 for selecting a broadcast channel using a plurality of broadcast channels by a control signal, and converting the digital image data of the broadcast selected by the tuner unit 130 into an IF signal. A demodulator 140 and a demultiplexer 150 for parsing multiplexed audio and video signals by receiving digital image data converted into IF signals from the demodulator 140, and the demultiplexer. The decoder 160 decodes the audio and video signals obtained by parsing in the unit 150 and enables the user to watch and listen, and the parser in the output unit 170 and the demultiplexer 15. g) a hard disk drive unit (HDD) 180 for storing audio and video data obtained therefrom.

1 illustrates the operation of the recording dispute apparatus in the prior art.

As shown in FIG. 1, in the recording and reproducing apparatus 190 capable of storing digital image data, the IR receiver 100 receives remote control code information selected by a user.

When the IR receiving unit 100 receives the remote control code information and transmits it to the control unit 110, the control unit 110 interprets the remote control code received from the IR receiving unit 100 and corresponds to the remote control code analysis information. Is sent to.

The memory unit 120 includes a flash ROM that stores an operating program and a DRAM that stores a virtual screen in a bitmap form that can be represented on the output unit 170.

When the tuner 130 selects a broadcast channel through a plurality of broadcast channels according to analysis information of a remote control code selected by a user, the tuner 130 transmits digital image data of the selected broadcast channel to the demodulator 140. .

The demodulator 140 converts the digital image data received from the duner 130 to an IF signal and transmits the converted IF signal to the demultiplexer 150.

The demultiplexer 150 parses audio data, video data, and a plurality of pieces of information multiplexed on the digital image data received from the demodulator 140.

The decoder 160 decodes the audio data and the video data parsed by the demultiplexer 150 so that the decoder 160 can view and listen to the output.

In addition, the hard disk (HDD) 180 receives and stores audio data and video data parsed by the demultiplexer 150.

Fig. 2 is a block diagram showing the IEEE 1394 connection configuration between the recording and playback apparatus of the prior art and DVHS.

As shown in FIG. 2, a recording / playback apparatus (PVR) 190 for storing digital video data and a DVHS (Digital Video Home System) 200 for backing up digital video data are comprised.

The operation of recording and reproducing the prior art recording and reproducing apparatus of FIG. 2 and DVHS will be described.

As shown in FIG. 2, the digital video data stored in the recording / reproducing apparatus (PVR) 190 is transmitted to the DVHS 200 through the communication network (IEEE 1394).

Here, the DVHS (Digital Video Home System) is a used format that can record up to 4 hours of original HD video quality.

The communication network is an IEEE 1394 that uses a serial bus for data at 400 Mbps and can connect hardware to 63 devices per bridge.

The DVHS 200 backs up the digital image data transmitted from the playback recording apparatus 190 to the DVHS tape.

The above-described playback recording apparatus (PVR) 190 may have a different storage time depending on the type of digital image data stored in the hard disk (HDD) 180. There is a limit.

In particular, in the case of digital HD broadcasting, the transmission rate is about 18Mbps per second. Therefore, the storage space of the hard disk is consumed to store the digital video data.

Since recording of digital HD broadcasting consumes about 10GB of hard disk space for one hour of recording, if you use 160GB hard disk, which is currently used a lot, you can't record any more than 10 hours.

Therefore, the digital video data backed up to the DVHS tape of the DVHS 200 through the IEEE 1394 embedded in the digital TV, and the digital image data backed up to the DVHS tape is deleted from the hard disk (HDD) built into the playback recording device (PVR) 190. A method of freeing space on the hard disk is often used.

This method is inconvenient in that it takes two hours to back up a two-hour recording because the backup time is the same as the playback time due to the performance limitation of the DVHS 200 device.

Therefore, in the above-described method, if the digital image data stored in the recording / reproducing apparatus (PVR) 190 is backed up, it is inconvenient for the user because the image reproduction time is recorded by the DVHS tape of the DVHS 200 for a long time. Gives.

In addition, since the digital image data is backed up to the DVHS tape of the DVHS 200, deterioration of the digital image data occurs when recording several times, and deterioration occurs even when stored for a long time.

In addition, even when restoring the digital image data backed up by the DVHS tape of the DVHS 200 to the hard disk of the recording / reproducing apparatus (PVR) 190, the recording / reproducing apparatus (PVR) 190 is reproduced while the DVHS 200 is reproduced. Because of the recording, the inconvenience of restoring digital image data for a long time is caused.

In addition, even if the digital image data stored in the DVHS tape is restored, the original digital image data cannot be reproduced due to deterioration occurring in the DVHS tape.

In addition, a large amount of time is required to search for storing the digital image data desired by the user among the digital image data stored in the DVHS tape of the DVHS 200 to the recording / reproducing apparatus (PVR) 190.

In order to solve the above problem, the present invention provides a method for backing up the recording data stored in the recording and playback apparatus by encryption and file system conversion to the computer.

In order to achieve the above object, the present invention provides a recording and reproducing apparatus for recording and reproducing digital video data, an interface means for transmitting recording data of the recording and reproducing apparatus, and connected to the interface means to transmit recording data. And a communication unit for receiving, a recording data providing / management module for providing a recording data list received by the communication unit, a recording data converting unit for converting one or more recording data from the provided recording data list, and backing up the converted recording data. And a computer including a storage unit for storing and a controller for controlling each unit to back up the recording data.

According to the invention, the interface means is characterized by a USB cable for transmitting the recording data.

According to the present invention, the recording data converting unit of the computer encrypts the encryption module for protecting the copyright of the recording data and the file system for converting the recording data received with the encryption code to be compatible with the file system of the computer. Characterized in that it comprises a conversion module.

According to the present invention, the encryption module is characterized by decrypting the encrypted data when the recorded data is restored to the recording and reproducing apparatus.

The present invention provides a method of recognizing a connection with a recording / playback apparatus in a computer, reading and displaying a recording data list stored in the recording / playback apparatus, selecting recording data from the displayed recording data list, and After receiving the encryption code to protect the copyright of the selected recording data, characterized in that it comprises the step of converting to be compatible with the file system of the computer and backing up the converted recording data to the storage of the computer.

According to the present invention, the recording data list includes at least one of recording capacity, recording storage time, and recording name.

According to the present invention, the file system conversion is characterized in that the conversion to the FAT 32 or NTFS file system according to the operating program of the computer.

According to the present invention, the recording data backed up to the storage unit of the computer provides the user with one or more recording data list so that the computer can recognize the connection of the recording and playback device, and select the recording data list backed up to the computer. And inversely converting the encryption code assigned to the selected recording data into the file system of the recording / playback apparatus after decrypting by the encryption module, and restoring the inverted recording data to the recording / playback apparatus. It is done.

3 is a block diagram showing a computer configuration of the present invention.

As shown in Fig. 3, a recording and reproducing apparatus 190 for recording and reproducing digital image data, interface means 301 for transmitting the recording data of the recording and reproducing apparatus 190, and the interface means 301. A communication unit 300 connected to the communication unit 300 for transmitting / receiving recording data, a recording data providing / management module 304 for providing a recording data list received by the communication unit 300, and one or more recordings in the provided recording data list. A computer 314 including a recording data conversion unit 306 for converting data, a storage unit 312 for backing up and storing the converted recording data, and a control unit 302 for controlling each unit to back up the recording data. It is configured to include.

The recording data conversion unit 306 of the computer converts the encryption module 308 to which the encryption code is assigned to protect the copyright of the recording data and the recording data to which the encryption code is assigned to be compatible with the file system of the computer. The file system conversion module 310 is configured.

3 illustrates an operation of backing up recording data to a computer in a recording / playback apparatus, and a second description of operations of restoring recording data backed up from a computer to a recording / playback apparatus.

As shown in Figure 3,

First, the operation of backing up recording data to the computer 314 in the recording and playback device 190 will be described. In order to back up the recording data stored in the personal video recorder (PVR) 190, the recording is performed. The reproducing apparatus 190 and the communication unit 300 of the computer 314 are connected to transmit / receive the recording data through the interface means 301.

The interface means 301 is a USB cable.

The personal video recorder (PVR) 190 is a device capable of storing digital broadcasts on a hard disk. The recording and playback function, as well as a time-shift, instant replay of live broadcasting, It offers many other trick-play features, and is much better than traditional video tape recorders (VTRs).

When the communication unit 300 of the computer 314 transmits the recording / playback device connection information to the control unit 302 of the computer 314 by the connected USB cable 301, the control unit 302 of the computer 314 The connection of the recording and reproducing apparatus 190 is recognized.

The communication unit 300 includes a USB terminal, and further includes Plug and Play, so that when the new device is installed, the recording and reproducing device 190 may be uniquely detected so that appropriate actions can be taken. Support installation of information.

When the controller 302 of the computer 314 that recognizes the connection of the recording / playback apparatus 190 transmits the connection recognition signal to the communication unit 300, the communication unit 300 records and reproduces the data using the connected USB cable 301. The recording data list stored in the device 190 is received.

When the communication unit 300 that receives the recording data list stored in the recording and playback device 190 transmits the recording data list to the control unit 302, the control unit 302 provides / recordings for the user to view the recording data list. Provided through the management module 304.

 The recording / providing / managing module 304 outputs a list of recording data received from the controller 302 so that the user can view the recording data.

The recording data list provides stored recording capacity, recording storage time and recording name.

After the user views the recording data list displayed by the recording providing / management module 304, the user inputs a key signal for selecting recording data to the controller 302.

The controller 302 recognizes a recording data selection signal, selects recording data from a recording data list stored in the recording / reproducing apparatus 190, and stores the recording data in a temporary storage unit (not shown) of the computer.

 The recording data stored in the temporary storage unit (not shown) is given an encryption code by the encryption module 308 of the recording data conversion unit 306.

The encryption code is assigned to protect the copyright of the stored recording data.

In addition, the encryption code is used for decryption when restoring recorded data.

The recording data received with the encryption code is converted by the file system conversion module 310 to be compatible with the operating program of the computer 314.

The file system conversion unit 310 is converted into FAT 32 (File Allocation Table 32) and NTFS (New Technology File System) according to the operating program of the computer 314.

The recording data converted by the file system conversion module 310 depends on the operating program of the computer 314. If the operating program of the computer 314 is Windows 98, the recording data is converted into a FAT 32 file system. For Windows 2000, the file is converted to the NTFS file system.

The recording system data converted by the file system according to the operating program of the computer is backed up to the storage unit 312 by the control signal of the control unit 302.

On the other hand, a second operation of restoring the recording data backed up in the storage unit 312 of the computer 314 to the recording and playback device 190, the recordings backed up in the storage unit 312 of the computer 314 The USB cable 301 is connected to the recording / reproducing apparatus 190 to restore the data to the recording / reproducing apparatus 190, and is also connected to the communication unit 300 of the computer 314.

The communication unit 300 transmits the recording / playback apparatus connection information connected by the USB cable 301 to the control unit 302 of the computer 314.

The controller 302 recognizes the received recording and playback device access information, and transmits the recorded data data list to the recording providing / managing module 304 for showing the recording data list to the user.

The recording / providing / managing module 304 displays a recording data list stored in the storage unit 312 by a control signal.

After the user confirms the displayed recording data list, the user inputs a key signal for selecting recording data to the controller 302. The controller 302 recognizes the recording data selection signal and selects the stored recording data to select a computer ( 314 is stored in a temporary storage unit (not shown).

The recording data stored in the temporary storage unit (not shown) is provided with an encryption code to protect the copyright of the recording data, and is also recording data converted into a file system according to an operating program of the computer 314.

In the recording data stored in the temporary storage (not shown) of the computer 314, the encryption code of the recording data is decrypted by the encryption module 308.

Recorded data in which the encryption code is decrypted is inversely converted to be compatible with the file system of the recording / playback apparatus 190.

The image data converter 306 transmits the inverse transformed recording data to the communication unit 300 by a control signal.

The communication unit 300 restores the recording data received from the recording data converting unit 306 to the recording / playback apparatus 190 through the USB cable 301.

4 is a flowchart illustrating a process of backing up recording data stored in the recording / reproducing apparatus of the present invention.

As shown in FIG. 4, when the recording / playback apparatus 190 storing the recording data is connected to the communication unit 300 of the computer 314 using the USB cable 301, the communication unit 300 is connected to the plug and play. The recording and playback device connection information is transmitted to the control unit 302 by this.

The controller 302 registers the recording and reproducing apparatus information in a register (not shown) of the computer 314 so that the recording and reproducing apparatus connection information transmitted from the communication unit 300 can transmit / receive the recording data. .

The register (not shown) is a small storage device that stores data used by a computer.

The controller 302 recognizes the recording and reproducing apparatus information registered in the register of the computer 314. (S400)

Recognizing the recording and reproducing apparatus information, the control unit 302 transmits a control signal for receiving a list of recording data stored in the recording and reproducing apparatus 190 to the communication unit 300 of the computer 314.

The communication unit 300 receives a list of recording data stored in the recording / reproducing apparatus 190 by the control signal received from the control unit 302 and transmits the list to the control unit 302.

The recording data list provides the recording capacity, recording storage time and recording name.

The control unit 302 provides a recording data list transmitted from the communication unit 300 through the recording providing / management module 304.

The image data providing / management module 304 is output so that the user can view the recording data list received from the controller 302.

When the selection signal for selecting recording data from among the recording data output by the recording data providing / management module 304 is input to the controller 302, the recording data is selected from the recording data list (S402).

The recording data selected in step S402 is received by the communication unit 300 by the USB cable 301.

When the communication unit 300 transmits the received recording data to the control unit 302, the control unit 302 stores the recording data in a temporary storage unit (not shown).

The recording data stored in the temporary storage unit (not shown) is given an encryption code by the encryption module 308 of the recording conversion unit 306, and the recording data received the encryption code is a file of the recording conversion unit 306. By the system change module 310 is converted into a file system according to the operating program of the computer 314. (S404)

The code code is assigned to the recording data to protect the copyright of the recording data.

In addition, the operating program of the computer is converted into FAT 32 file and NTFS file system accordingly.

The recording data converted by the file system conversion module 310 depends on the operating program of the computer 314. If the operating program of the computer 314 is Windows 98, the recording data is converted into a FAT 32 file system. In the case of Windows 2000, it is converted to the NTFS file system.

The recording data converted by the recording data conversion unit 306 is backed up to the storage unit 312 by a control signal (S406).

The encryption code and the file system change are converted by the conversion software operating on the computer 314 to file system for the recording / playback device file system to the computer 314.

In addition, the recording data is encrypted before the file system conversion, thereby making the recording data stored in the computer available for backup purposes only, and preventing playback on the computer 314 or converting it into another format.

FIG. 5 is a flowchart illustrating a process of restoring recorded data to the recording / reproducing apparatus of FIG. 4.

As shown in Fig. 5, in order to restore the recording data to the recording / playback apparatus 190, the recording / playback apparatus 190 and the communication unit 300 of the computer 314 are connected using the USB cable 301.

The communication unit 300 transmits the recording and reproducing apparatus information to the control unit 302 by plug and play.

The communication unit 300 includes a USB terminal, and further includes Plug and Play, so that when the new device is installed, the recording and reproducing device 190 may be uniquely detected so that appropriate actions can be taken. Support installation of information.

The controller 302 registers the recording and reproducing apparatus information in a register (not shown) of the computer 314 so that the recording data can be transmitted / received by the plug and play.

The controller 302 recognizes the recording and reproducing apparatus information registered in the register of the computer 314. (S500)

Recognizing the recording and playback apparatus 190 connected to the communication unit 300 of the computer 314, the control unit 302 records the recording data so that the user can view the recording data list backed up to the storage unit 312 of the computer 314 Provided through the provision / management module 304.

The recording data providing / management module 304 reads and displays a recording data list backed up to the storage unit 312 of the computer.

When a key signal for selecting recording data from the recording data list displayed by the recording data providing / management module 304 is input to the controller 302, the controller 302 recognizes the recording data selection signal.

Recognizing the recording data selection signal, the control unit 302 selects recording data from the recording data list stored in the storage unit 312 of the computer 314 (S502).

 The recording data selected in step S502 is stored in a temporary storage unit (not shown) of the computer 314 by a control signal.

The recorded data stored in the temporary storage unit (not shown) is decrypted by the encryption module 308 of the image data converter 306.

The decrypted recording data is inversely converted by the file system converting module 310 to be displayed on the recording / playback device file system in the FAT 32 and NTFS file systems according to the computer operating program (S504).

When the recording data converted by the image data converter 306 is inversely converted to the communication unit 300, the recording data is restored to the recording / playback apparatus 190 through the USB cable 301 (S506).

In the above, the present invention has been described with reference to preferred embodiments thereof, but this is only an example and not limiting the present invention, and those skilled in the art to which the present invention pertains do not depart from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not possible that are not illustrated above.

For example, each component shown in detail in the embodiment of the present invention may be modified. And differences relating to such modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.

The present invention has the following effects.

First, the recording data stored in the recording and playback device can be backed up in a short time.

Second, deterioration does not occur even if the backed up data is recorded several times and stored for a long time.

Third, even when the backed up recording data is restored to the recording and playback device, it can be restored in a short time.

Fourth, even if the backed up recording data is restored, the deterioration of the hard disk does not occur so that the original recorded data can be reproduced.

Fifth, a large amount of time is not required for searching among the stored recording data in order to restore the desired recording data to the recording / playback apparatus.

Claims (8)

A recording / playback apparatus for recording and reproducing digital image data; Interface means for transmitting the recording data of the recording and reproducing apparatus; A communication unit connected to the interface means for transmitting / receiving recording data, recording data providing / managing module for providing a recording data list received by the communication unit, recording data conversion for converting one or more recording data from the provided recording data list. And a computer including a storage unit for backing up and storing the converted recording data and a controller for controlling each unit to back up the recording data. The method of claim 1, And said interface means is a USB cable for transmitting recorded data. The method of claim 1, The recording data conversion unit of the computer includes an encryption module for assigning an encryption code to protect the copyright of the recording data; And And a file system conversion module for converting the recording data to which the encryption code has been assigned so as to be compatible with the file system of the computer. The method of claim 3, wherein And the encryption module decrypts the encryption code when the recording data is restored to the recording / playback apparatus. Recognizing a connection with a recording / playback apparatus in a computer; Reading and displaying a list of recorded data stored in the recording and reproducing apparatus; Selecting recording data from the displayed recording data list; Converting to be compatible with a file system of a computer after receiving an encryption code to protect copyright of the selected recording data; And And backing up the converted recording data to a storage unit of a computer. The method of claim 5, And the recording data list includes at least one of recording capacity, recording storage time, and recording name. The method of claim 5, The file system conversion is a digital video data backup method of a recording and playback device, characterized in that for converting to a FAT 32 or NTFS file system according to the operating program of the computer. The method of claim 5, Recorded data backed up to the storage unit of the computer Recognizing a connection of a recording and reproducing apparatus in the computer; Providing at least one recording data list to a user so as to select the recording data list backed up to the computer; Inversely converting the encryption code assigned to the selected recording data into the file system of the recording / reproducing apparatus after decrypting by the encryption module; And Restoring the inversely converted recording data to a recording / playback apparatus.

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