KR100589605B1 - Method for protecting data of optical media recorder - Google Patents

Abstract

The present invention relates to a method of protecting information of an optical recording medium recording apparatus. When the recording mode is selected in a state where an optical recording medium is loaded, the step of waiting for input of a password for the information protection function of the corresponding item, and if the password is input, Recording the encrypted data input at the predetermined recording position of the optical recording medium, recording the information data of the corresponding item on the optical recording medium, and if the reproduction mode or the erasing mode of the corresponding item is selected, Checking whether there is encryption data in the predetermined recording location; if encryption data exists, extracting the encryption data from the recording location and waiting for input of the encryption data from the outside; and if the encryption data is input, the extracted password. And the step of checking whether or not the entered password matches, and the corresponding items recorded on the optical recording medium when the two passwords match. And reproducing or erasing information data of the optical recording medium, and recording the password together for each information item of the optical recording medium and reproducing the information only when the passwords match. There is an advantage that sex is provided.

Description

Information protection method of optical recording medium recording device {METHOD FOR PROTECTING DATA OF OPTICAL MEDIA RECORDER}

1 is a block diagram of an optical recording medium recording apparatus to which the information protection method according to the present invention can be applied.

2 is a flowchart illustrating a process of recording information on an optical recording medium according to the information protection method according to the present invention;

3 is a flowchart illustrating a process of setting a password on an optical recording medium according to the information protection method according to the present invention;

4 is a flowchart illustrating a process of releasing a password set in an optical recording medium according to the information protection method according to the present invention;

5 is a flowchart showing a process of reproducing information recorded on an optical recording medium according to an information protection method according to the present invention;

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

102: remote control 104: remote signal receiving unit

106: keypad 108: key input decoder

110: control unit 112: OSD signal processing unit

114: recording medium recording / playback processing unit 116: audio processing unit

118: image processing unit

The present invention relates to a method of protecting information of an optical recording medium recording apparatus. More particularly, the information of an optical recording medium recording apparatus capable of individually protecting the corresponding information by item by recording a password for each information item of the optical recording medium together. It is about a protection method.

As is well known, as the information protection method in the broadcasting field, an age rating system is implemented in a broadcast program, and a television rating technology for technically preventing a child from watching an adult program using a set-top box or a separate chip is adopted in a television program. Televisions adopting this rating technology have been developed to prevent various problems that may occur when adult broadcast programs are exposed to children, and the guardian can set a password by specifying a broadcast program to be restricted. do.

On the other hand, in the conventional information protection method for the optical recording medium, the user of the optical recording medium recording apparatus sets the password, and only the user who inputs the matching password while storing the set password in the internal memory plays the information. To make it possible.

However, this conventional technology has a problem that the information can no longer be protected when the optical recording medium on which the information is recorded is moved to another place and played back on another recording device for which the encryption function is not set.

The present invention has been proposed to solve such a conventional problem, and by recording the password for each information item of the optical recording medium and playing back only when the password is matched, the information can be individually protected by item. An object of the present invention is to provide a method of protecting information of an optical recording medium recording apparatus.

In an aspect of the present invention for realizing the above object, the information protection method of the optical recording medium recording apparatus, when the recording mode is selected while the optical recording medium is loaded, waits for input of a password for the information protection function of the corresponding item. Recording the inputted encryption data at a predetermined recording position of the optical recording medium, recording the information data of the corresponding item on the optical recording medium, and reproducing or erasing the corresponding item. If the mode is selected, checking whether there is encryption data at a predetermined recording position of the optical recording medium; if encryption data exists, extracting the encryption data from the recording position and waiting for input of the encryption data from the outside; When the password data is entered, a step of checking whether the extracted password matches the entered password, and when the two passwords match Reproducing or erasing the information data of the corresponding item recorded on the optical recording medium.

In another aspect of the present invention, an information protection method of an optical recording medium recording apparatus includes providing a menu screen showing various items of information recorded on an optical recording medium when the information protection function is selected while the optical recording medium is loaded; Waiting for input of a password for the information protection function of the selected item when any one of the items on the menu screen is selected; and recording the input password data at a predetermined recording position of the optical recording medium. Extracting the encryption data from the predetermined recording position of the optical recording medium and waiting for the encryption data to be input from the outside when the reproduction mode or the erasing mode of the corresponding item on which the encryption data is recorded is selected; And checking whether the extracted password matches the entered password, and optical recording if the two passwords match. And a step of reproducing or erasing the information recorded in the data of the item body.

In still another aspect of the present invention, an information protection method of an optical recording medium recording apparatus provides a menu screen showing various items of information recorded on an optical recording medium when the information protection release function is selected while the optical recording medium is loaded. Step, waiting for input of a password for information protection releasing function of the selected item if any one of the various items on the menu screen is selected, and a password recorded in a predetermined recording position of the optical recording medium if the password is inputted. After extracting the data, comparing the extracted password data with the input password data, and if the two password data match, erase the password data recorded in the predetermined recording position and protect the information of the corresponding item. It includes the step of releasing.

There may be a plurality of embodiments of the present invention. Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings. This embodiment allows for a better understanding of the objects, features and advantages of the present invention.

1 is a block diagram of an optical recording medium recording / reproducing apparatus to which the information protection method according to the present invention can be applied.

The remote control unit 102 includes a function key for selecting various functions including recording, reproducing, and locking / unlocking function of an optical recording medium, and an encryption key for inputting a password such as a password. Alternatively, a signal corresponding to the encryption key is transmitted in the form of a remote signal such as an infrared signal or an ultrasonic signal.

The remote signal receiver 104 receives a remote signal according to a function key or an encryption key operation transmitted from the remote controller 102 and transmits the remote signal to the controller 110.

The keypad 106 is installed on the front control panel of the corresponding optical recording medium recording / reproducing apparatus to provide a password such as a function key and a password for selecting various functions including the optical recording medium recording, playback, and item lock / release functions. It has an encryption key that can be entered.

The key input decoder 108 decodes and outputs a key input signal corresponding to a key operation from the keypad 106 so as to be recognized.

The controller 110 receives various function selection signals input through the remote signal receiver 104 and the key input decoder 108 and recognizes them through an internal keycode data table, and controls the entire system according to various function selection signals. The overall operation of the recording medium recording / reproducing apparatus. In particular, in order to protect the information recorded on the optical recording medium, the password is recorded on the optical recording medium for each information item when the information is recorded or when the item-specific locking function is selected. The information protection function of the control unit 110 will be described in more detail below with reference to FIGS. 2 to 5.

The OSD signal processor 112 outputs an OSD screen on the screen of the image output apparatus under the control of the controller 110.

The recording medium recording / reproducing processor 114 records information on an optical recording medium such as a DVD or the like and reproduces the information recorded on the optical recording medium under the control of the control unit 110.

The voice processing unit 116 outputs the voice information reproduced from the optical recording medium by the recording medium recording / reproducing processor 114 through an audio output device such as a speaker.

The image processor 118 outputs image information reproduced from the optical recording medium by the recording medium recording / reproducing processor 114 through an image output device such as a monitor.

Hereinafter, a process of recording information on an optical recording medium and a process of reproducing information recorded on the optical recording medium by the optical recording medium recording / reproducing apparatus to which the information protection method according to the present invention is applied will be described with reference to FIGS. 1 to 5. It will be described in detail.

1 and 2, in a state where an optical recording medium such as a DVD or the like is loaded into the recording medium recording / reproducing processor 114, the user selects and operates a function key of the remote controller 102 or the keypad 106 to record the recording mode. If is selected, the recording mode selection signal is transmitted to the control unit 110 through the remote signal receiving unit 104 or the key input decoder 108 (S201 to S203).

The controller 110 recognizes the recording mode selection signal through the internal keycode data table, and then controls the OSD signal processor 112 to request to set a password for the information protection function, that is, the lock function of the corresponding item. The OSD signal processor 112 processes the password setting request guide letter as an OSD signal and outputs the OSD signal to the image processor 118. As a result, the image processor 118 outputs an OSD screen on the screen of the image output apparatus to request a user to set a password for information protection, and the controller 110 waits for a corresponding password input (S205).

When the user who recognizes the OSD screen inputs a password such as a password by selecting and manipulating an encryption key of the remote controller 102 or the keypad 106, the controller 110 receives the input password by the same flow as the above-described function key recognition process. Recognize (S207).

The control unit 110 instructs the recording of the encryption data while transferring the password inputted by the user to the recording medium recording / reproducing processor 114, and the recording medium recording / reproducing processing unit 114 is a predetermined recording position of the recording medium. After recording the encryption data (e.g., in the TOC area), information such as video, audio, and data input from the outside is recorded on the optical recording medium (S209 to S211).

On the other hand, if the user does not enter a password to pass a predetermined time in step S207 or selects the non-use of the lock function by using a separate agreement key, video, audio, data input from the outside while skipping the encryption data recording process Information such as this is recorded on the optical recording medium (S211).

1 and 3, when the optical recording medium is loaded in the recording medium recording / reproducing processor 114, the user selects and operates a function key of the remote controller 102 or the keypad 106 to select the locking function. The lock function selection signal is transmitted to the controller 110 through the remote signal receiver 104 or the key input decoder 108 (S301 to S303).

The controller 110 recognizes the lock function selection signal through an internal keycode data table, and then transfers a menu screen (eg, a thumb menu screen) indicating various items of information recorded on the optical recording medium to the image processor 118. Output Then, the image processor 118 displays a menu screen on the screen of the image output apparatus, and the controller 110 waits for a menu selection by the user (S305).

Here, when the user selects any one of the various items on the menu screen, the controller 110 controls the OSD signal processor 112 to request to set a password for the information protection function, that is, the lock function of the selected item, and the OSD The signal processor 112 processes the password setting request guide letter as an OSD signal and outputs the OSD signal to the image processor 118. As a result, the image processor 118 outputs an OSD screen on the screen of the image output apparatus to request a user to set a password for information protection, and the controller 110 waits for a corresponding password input (S307 to S309).

When the user who recognizes the OSD screen inputs a password such as a password by selecting and manipulating an encryption key of the remote controller 102 or the keypad 106, the controller 110 receives the input password by the same flow as the above-described function key recognition process. Recognize (S311).

The control unit 110 instructs the recording of the encryption data while transferring the password inputted by the user to the recording medium recording / reproducing processor 114, and the recording medium recording / reproducing processor 114 records the predetermined recording of the optical recording medium. The encrypted data is recorded in the position (e.g., the TOC area) (S312).

1 and 4, in a state where the optical recording medium is loaded into the recording medium recording / reproducing processor 114, the user selects the unlock function by selecting and operating a function key of the remote controller 102 or the keypad 106. The lock release function selection signal is transmitted to the controller 110 through the remote signal receiver 104 or the key input decoder 108 (S401 to S403).

The controller 110 recognizes the unlock function selection signal through an internal keycode data table and then displays a menu screen (eg, a thumb menu screen) indicating various items of information recorded on the optical recording medium. Will output Then, the image processor 118 displays a menu screen on the screen of the image output apparatus, and the controller 110 waits for a menu selection by the user (S405).

Here, when the user selects any one of the various items on the menu screen, the control unit 110 requests the OSD signal processing unit 112 to request to input the password that was input when setting the information protection function, that is, the lock function of the selected item. The OSD signal processor 112 processes the password input request guide of the corresponding item as an OSD signal and outputs the OSD signal to the image processor 118. As a result, the image processing unit 118 outputs an OSD screen on the screen of the image output apparatus to request a user to input a password for releasing the information protection function, and the controller 110 waits for a corresponding password input (S407 to S409). ).

When the user who recognizes the OSD screen inputs a password such as a password by selecting and manipulating an encryption key of the remote controller 102 or the keypad 106, the controller 110 receives the input password by the same flow as the above-described function key recognition process. Recognize (S411).

Then, the controller 110 extracts the encrypted data recorded in the predetermined recording position (for example, the TOC area) of the optical recording medium through the recording medium recording / reproducing processor 114, and then extracts the encrypted data and step S411. In step S413 to S415, the passwords are compared with each other.

If the two ciphers match at step S415, the controller 110 erases the cipher data recorded at the predetermined recording position (eg, the TOC area) of the optical recording medium through the recording medium recording / reproducing processor 114. By releasing the lock function of the corresponding item, if the two passwords do not match, by maintaining the password data corresponding to the item intact to maintain the lock function of the item (S417).

1 and 5, when the optical recording medium is loaded in the recording medium recording / reproducing processor 114, the user selects playback by selecting and operating a function key of the remote control 102 or keypad 106. The selection signal is transmitted to the controller 110 through the remote signal receiver 104 or the key input decoder 108 (S501 to S503).

The control unit 110 recognizes the reproduction selection signal through the internal key code data table, and the recording medium recording / reproducing processor 114 enters the reproduction mode according to the reproduction control signal by the control unit 110 to It is checked whether encrypted data exists in a predetermined recording position (e.g., a TOC area) (S505).

In this case, when the encrypted data exists in the predetermined recording position, the encrypted data is extracted (reproduced) by the recording medium recording / reproducing processor 114 and transmitted to the controller 110, and the controller 110 controls the OSD signal processing unit ( 112 to control the preset password input request guide as an OSD signal to output to the image processing unit 118, the image processing unit 118 outputs an OSD screen on the screen of the image output device to inform the user For protection, the device waits for input after requesting input of a preset password (S507 to S511).

When the user who recognizes the OSD screen inputs a password such as a password by selecting and operating an encryption key of the remote controller 102 or the keypad 106, the controller 110 recognizes the input password by the same flow as the above-described password setting process. Then, it is checked whether the recognized password matches the password input in step S511 (S513).

If the two ciphers match in step S513 or if the cipher data does not exist in the optical recording medium in step S507, the control unit 110 outputs a control signal for reproducing the corresponding item to the recording medium recording / reproducing processor 114. In operation S515, the recording medium recording / reproducing processor 114 reproduces information such as video, audio, and data recorded on the optical recording medium.

Although the foregoing description has been limited to one embodiment of the present invention, it is obvious that the technology of the present invention can be easily modified by those skilled in the art. For example, in the above-described embodiment, the encryption authentication procedure is performed at the time of recording and reproduction. However, the same encryption authentication procedure can be performed at the time of erasing to prevent unauthorized erasure. Such modified embodiments should be included in the technical spirit described in the claims of the present invention.

As described above, the present invention provides a high security for protecting the information individually by item by recording the password together for each item of information of the optical recording medium and reproducing only when the password matches when the item is reproduced.

Claims (9)

If the recording mode is selected while the optical recording medium is loaded, waiting for input of a password for the information protection function of the corresponding item; Recording the input password data at a predetermined recording position of the optical recording medium when the password is input; Recording the information data of the corresponding item on the optical recording medium; Checking whether the encrypted data exists at a predetermined recording position of the optical recording medium when the reproduction mode or the erasing mode of the corresponding item is selected; If the encrypted data is present, extracting the encrypted data from the recording position and waiting for input of the encrypted data from the outside; Checking whether the extracted password matches the input password when the password data is input; Reproducing or erasing the information data of the corresponding item recorded on the optical recording medium when the two encryption codes coincide. Information protection method of an optical recording medium recording apparatus comprising a. The method of claim 1, The password input waiting step, the information protection method of the optical recording medium recording apparatus, characterized in that for waiting after outputting a guide requesting the input of the password data through the OSD screen. The method according to claim 1 or 2, And the contracted recording position is a TOC area of the optical recording medium. Providing a menu screen showing various items of information recorded on the optical recording medium when the information protection function is selected while the optical recording medium is loaded; Waiting for input of a password for an information protection function of the selected item when any one of the various items on the menu screen is selected; Recording the input password data at a predetermined recording position of the optical recording medium when the password is input; Extracting the encryption data at a predetermined recording position of the optical recording medium and waiting for input of the encryption data from the outside when the reproduction mode or the erasing mode of the corresponding item on which the encryption data is recorded is selected; Checking whether the extracted password matches the input password when the password data is input; Reproducing or erasing the information data of the corresponding item recorded on the optical recording medium when the two encryption codes coincide. Information protection method of an optical recording medium recording apparatus comprising a. The method of claim 4, wherein The password input waiting step, the information protection method of the optical recording medium recording apparatus, characterized in that for waiting after outputting a guide requesting the input of the password data through the OSD screen. The method according to claim 4 or 5, And the contracted recording position is a TOC area of the optical recording medium. Providing a menu screen indicating various items of information recorded on the optical recording medium when the information protection release function is selected while the optical recording medium is loaded; Waiting for input of a password for an information protection releasing function of the selected item when any one of the various items on the menu screen is selected; Extracting encryption data recorded at a predetermined recording position of the optical recording medium when the password is input, and comparing the extracted encryption data with the input encryption data; Canceling the information protection function of the corresponding item by erasing the encrypted data recorded at the predetermined recording position when the two encrypted data match. Information protection method of an optical recording medium recording apparatus comprising a. The method of claim 7, wherein The password input waiting step, the information protection method of the optical recording medium recording apparatus, characterized in that for waiting after outputting a guide requesting the input of the password data through the OSD screen. The method according to claim 7 or 8, And the contracted recording position is a TOC area of the optical recording medium.

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