KR20060007937A - Data writing/reproducing device for using password and method thereof - Google Patents

Abstract

A data recording / reproducing apparatus using a password is disclosed. The data recording / reproducing apparatus includes a data recording module for recording image data on a recording medium, a key signal input section for inputting a data recording command and a password, and a recording signal processing section for generating password input window data corresponding to each character of the password. And a control unit for controlling the data recording module to record the image data and the password input window data on the recording medium when the data recording command is input. On the other hand, it may further include a data reproducing module for reproducing the data recorded on the recording medium. Accordingly, the video data is reproduced when the menu screen of the video data is normally navigated from the menu screen of the video data according to the user password input during the data playback process. As a result, unauthorized reproduction of a third party can be prevented.

Password, Navigation, DVD, Menu

Description

Data recording / reproducing device for using password and method

1 is a block diagram showing the configuration of a data recording / reproducing apparatus according to an embodiment of the present invention;

2 is a message for requesting a password input in the data recording / reproducing apparatus of FIG. 1;

3 is a flowchart illustrating a data recording / reproducing method according to an embodiment of the present invention;

4 is a flowchart for explaining an example of an operation of a data recording / reproducing apparatus according to a user password input.

Explanation of symbols on the main parts of the drawing

110: data recording module 120: recording signal processing unit

130: control unit 140: data playback module

150: playback signal processing unit 160: key signal input unit

170: memory 180: interface

The present invention relates to a data recording / reproducing apparatus and a method thereof, and more particularly, to recording data on a recording medium using a password, thereby recording data that can prevent unauthorized reproduction by a third party who does not know the password. / Playing apparatus and method thereof.

With the development of electronic technology, data recording / reproducing apparatuses with more and more various functions are becoming popular among general users. Recently, a lock function for restricting the playback operation by setting a password in the data recording / reproducing apparatus itself has been implemented. Accordingly, the user can prevent the third party who does not know the password from watching the moving picture data using the data recording / reproducing apparatus.

However, there is a problem in that viewing cannot be prevented when the locking function of the data recording / reproducing apparatus is released or the recording medium is reproduced by another data recording / reproducing apparatus. Therefore, when the recording medium storing the user's private information is in the hands of others, there is a problem that the contents can be easily confirmed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to record image data and information data using a password set by a user in the process of recording data on a recording medium, thereby preventing a password from being unknown. The present invention provides a data recording / reproducing apparatus and a method thereof, which make it impossible to check contents recorded on a recording medium.                         

It is still another object of the present invention to provide a data recording / reproducing apparatus and method thereof having versatility by comparing whether or not passwords are matched using a process of navigating from a menu screen to a playback screen in playing a DVD title.

Data recording / reproducing apparatus according to an embodiment of the present invention for achieving the above object, a data recording module for recording the image data on a predetermined recording medium, a data recording command for the image data and a password of a predetermined number of digits A key signal input unit providing a function of inputting a data, a recording signal processing unit generating password input window data corresponding to each character of the password, and when the data recording command is inputted, the image data and the password input window data to the recording medium. And a control unit for controlling the data recording module to record data in the memory.

Preferably, the apparatus may further include a data reproducing module for reproducing predetermined data recorded on the recording medium. In this case, the controller may control the data reproducing module to reproduce predetermined message data for inputting a user password from the recording medium when a data reproducing command for the image data is input through the key signal input unit.

On the other hand, when the user password is input, the controller sequentially reproduces password input window data corresponding to each character of the user password in the order of inputting each character, and the password input window data is set in the order of setting the password. When the data is reproduced in the same order as that of navigation to the playback screen of the video data, the data playback module is controlled to play the video data.

According to an embodiment of the present invention, a data recording / reproducing method includes: (a) receiving a data recording command and a password for recording predetermined image data on a recording medium, and (b) corresponding to each character of the password. Generating password input window data and recording the data together with the image data on the recording medium; (c) displaying a message requesting input of a user password when a data reproducing command for the image data is input; (d) if the user password is input, checking whether there is password input window data corresponding to each character of the input user password, (e) if corresponding password input window data exists, reproducing it, ( f) repeating steps (d) and (e) to the last digit of the user password, and (g) the last digit of the user password is If when the power match after comparison with the last character of the password, and a step of reproducing the video data.

Preferably, if there is no password input window data corresponding to a predetermined digit character of the user password, displaying a predetermined password input window to the last digit of the user password, and the character of the last digit of the user password When the input is completed, the method may further include displaying a non-playback message for the image data.

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

1 is a block diagram showing the configuration of a data recording / reproducing apparatus according to an embodiment of the present invention. 1, the data recording module 110, the recording signal processing unit 120, the control unit 130, the data reproduction module 140, the reproduction signal processing unit 150, the key signal input unit 160, the memory 170, And an interface 180.

The interface 180 is connected to an external video display device to relay communication.

The key signal input unit 160 serves to receive a user's selection signal related to the operation of the data recording / reproducing apparatus. That is, when the user inputs various selection signals such as a data recording command and a data reproducing command by operating a button key or a remote controller provided in the main body of the data recording / reproducing apparatus, the key signal input unit 160 recognizes this and the control unit 130. Notice)

When a data recording command is input, the controller 130 controls the recording signal processing unit 120 to convert predetermined image data into data of a predetermined type for recording on a recording medium. Next, the controller 130 controls the data recording module 110 to record the converted image data on the recording medium.

In this case, the image data may be received from an external image display device connected through the interface 180. On the other hand, it may be received from a memory card or the like connected separately.

The user can enter a predetermined password in the data recording process. The input password is for confirming whether or not the user is a legitimate user during data reproduction. When a data recording command is input, the controller 130 executes firmware stored in the memory 170 and transmits message data for inputting a password to the video display device. In this case, in order to prevent hacking by a third party, a password represented by a plurality of digits is set. In addition, the password may be input not only in numbers but also in characters including English and Korean.

When a password is input, the controller 130 controls the recording signal processor 120 to generate password input window data corresponding to each digit of the password. The password input window data is for inputting a password in the data reproduction process. The generated password input window data and image data are recorded on the recording medium by the data recording module 110.

Meanwhile, for data reproduction, the user may input a data reproduction command through the key signal input unit 160. If it is determined that the data reproducing command is input, the controller 130 may transmit predetermined message data requesting input of a password by reproducing a predetermined region of the recording medium to the video display device.

Accordingly, when the user inputs a predetermined password (hereinafter referred to as a user password for convenience of explanation), the password input window data corresponding to the input password is reproduced. That is, when a character of the first digit of the user password is input, password input window data corresponding to the first digit is reproduced to provide an input window for inputting the next digit. Accordingly, when the second digit character is input on the next input window, the password input window data corresponding to the second digit is reproduced to provide an input window for inputting the next digit. In this manner, when the last digit of the user password is input, the controller 130 controls the data reproducing module 140 to reproduce the image data.

The reproduced data is converted by the reproduction signal processing unit 150 into data in a form that can be output on the screen by an external video display device. The converted data is transmitted to the video display device through the interface 180.

On the other hand, if a user password that is inconsistent with the preset password is input in the process of inputting the user password, password input window data corresponding to the input character does not exist. In this case, a false input window may be displayed allowing the user to input the last digit of the user password, making it difficult for the user to infer the password. Accordingly, when the user enters the password to the last digit, the message message indicating that the password is not correct is transmitted to the video display device for display. In this case, the message data may use data stored in the recording medium.

Hereinafter, the case where the data recording / reproducing apparatus is a DVD player will be described as an example. In the case of a DVD player, a title and menu information are recorded on the DVD. DVD contents such as titles are stored in the form of VOB files, and menu information, etc., are stored in the form of IFO files. The menu screen according to each menu information is stored as a video in the VOB file so that each menu information can be navigated by playing / stopping the video according to a user's selection signal. After completing various settings on the menu screen, when the user selects the playback menu, the user navigates to the playback screen of the video data and plays back the video data.                     

First, password input window data is generated to navigate to the playback screen according to the password input by the user in the data recording process. That is, when a user inputs a data recording command after mounting the DVD, the controller 130 executes the firmware recorded in the memory 170 and transmits predetermined message data to input the password to the video display device. Accordingly, when a password is input, password input window data corresponding to each digit of the password is generated as an IFO (infomation) file, and then recorded on the recording medium together with the image data.

Next, if a user's data playback command is input (i.e., a playback menu is selected on the menu screen) in the data playback process, a predetermined message for inputting the user password is displayed. Accordingly, when the first character of the user password is input, the corresponding password input window data is reproduced to display the user password input window for receiving the next digit character. In this way, when the password input window data is reproduced sequentially and the last digit character matches the last character of the password, the password input window data is navigated to the video data (i.e., DVD title) reproduction screen. That is, if the playback order of the password input window data matches the password input order, the video data is normally played back.

Specifically, for example, if the password is 1234, pressing each number of the password is navigated to the password input window corresponding to the number. Therefore, when the user inputs the password in the order of 1-> 2-> 3-> 4, the user navigates to the DVD title play screen and plays the DVD title. On the other hand, if the user inputs in the order of 1-> 2-> 4-> 3, 1-> 2 is normally navigated, and in 4-> 3, the fake input window is simply navigated to fill 4 digits of the password. In this case, even when the input of the user password is completed, the navigation screen is navigated to a screen for notifying the password mismatch without going to the playback screen. As a result, the user cannot watch the DVD title.

2 is a schematic diagram of a password input window displayed on a screen of a video display device connected to a data recording / reproducing apparatus according to an embodiment of the present invention. According to FIG. 2A, when a data reproducing command is input, a predetermined message 210 for inputting a password is displayed on the screen 200. In this case, one input window 220a for inputting the first digit character together with the message 210 is displayed. Accordingly, when the first character is input, the password input window data corresponding to the first character is reproduced to display the second input window 220b. After the last input window 220d is displayed in this manner, the image data is reproduced when the last character is input. In this case, even if an incorrect password is input, the false input window is displayed to the last digit.

On the other hand, the user password input by the user may be displayed unified with a character such as '*' in order to prevent external leakage. In addition, when a data reproducing command is input, all the input windows 220a to 220d may be displayed at once. Even in this case, the image data is reproduced only when the password input window data corresponding to each digit is reproduced in a normal order.

2B is a schematic diagram of a message window when a user password is incorrectly input. According to FIG. 2B, the password may be re-entered according to the user's selection. On the other hand, such a message window for notifying the password mismatch is preferably displayed after the user password has been entered to the last digit.

3 is a flowchart illustrating a data recording / reproducing method according to an embodiment of the present invention. Referring to FIG. 3, when the user inputs a data recording command and inputs image data to be recorded, a password for restricting reproduction of the image data is also set (S310).

Accordingly, when a password is input, password input window data corresponding to each character of the password is generated (S320). The generated password input window data is a kind of menu data and is stored as an IFO file in the case of a DVD player. The generated password input window data and image data are recorded on the recording medium (S330).

When a data reproduction command is input to the image data recorded in this manner (S340), a user password required for data reproduction is requested and received (S350). In this case, the message data for requesting the user password may be recorded on the recording medium together with the image data and the password input window data.

Accordingly, when a user password is input, password input window data corresponding to each character is reproduced (S360). When the user password is input to match the password, the password input window data is reproduced in a normal order to navigate to the playback screen of the image data (S370).

Accordingly, when navigation to the playback screen, the video data is reproduced (S380). On the other hand, if the navigation screen of the video data is not navigated means that the user password does not match the password, a predetermined warning message is displayed (S390). In this case, the password input window for re-entering the user password can be displayed again.

4 is a flowchart illustrating an embodiment of an operation of a data recording / reproducing apparatus according to a user password input. According to FIG. 4, when the first digit character of the user password is input (S410), it is determined whether there is password input window data corresponding thereto (S420). Accordingly, when it is determined that the corresponding password input window data exists, it is reproduced to display the password input window for the next character (S430).

On the other hand, if there is no corresponding password input window data, it can be considered that the user password is incorrectly input. Accordingly, after checking whether the currently input user password is the last digit character (S470), if not the last digit character, the password input window is displayed until the last digit is input (S480). In this case, the displayed password input window is simply displayed on the screen, and thus the navigation operation on the menu screen is not performed. On the other hand, if the last digit is input in this state, a message that the password is inconsistent is displayed (S490). Such message data may also be stored in an IFO file on a recording medium.

On the other hand, if the corresponding password input window data is present and reproduced, this operation is repeatedly performed until the last digit character is input (S440, S450). As a result, when the user password is input so as to exactly match the password, normal navigation is performed from the menu screen of the image data to the playback screen. Accordingly, it is possible to reproduce the video data (S460).                     

As a result, unauthorized reproduction by a third party who does not know the password can be prevented.

As described above, according to the present invention, the process of navigating from the menu screen to the playback screen in the data recording process is set using the password. Accordingly, if the password is not correctly input during the data reproduction process, navigation to the playback screen is not possible, and thus video data cannot be reproduced normally. As a result, unauthorized reproduction by a person who does not know the password can be prevented. In addition, the password comparison process of the present invention uses a process of navigating to the playback screen on the menu screen of the DVD player, so that even if the device does not have a separate password comparison function, it is possible to play the image only by inputting the password. Therefore, the versatility can be utilized.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (5)

A data recording module for recording image data on a predetermined recording medium; A key signal input unit for providing a data recording command for the image data and a function of inputting a password having a predetermined number of digits; A recording signal processor for generating password input window data corresponding to each character of the password; And And a control unit which controls the data recording module to record the image data and the password input window data on the recording medium when the data recording command is input. The method of claim 1, And a data reproducing module for reproducing predetermined data recorded on the recording medium. The control unit controls the data reproducing module to reproduce predetermined message data for inputting a user password from the recording medium when a data reproducing command for the image data is input through the key signal input unit. Playback device. The method of claim 2, The control unit, When the user password is input, password input window data corresponding to each character of the user password is sequentially reproduced according to the input order of each character, and the password input window data is reproduced in the same order as the setting sequence of the password. And the data reproducing module controls the data reproducing module to reproduce the video data when navigation is made to the reproduction screen of the video data. (a) receiving a data recording command and a password for recording predetermined image data on a recording medium; (b) generating password input window data corresponding to each character of the password, and then recording the data together with the image data on the recording medium; (c) displaying a message requesting input of a user password when a data reproducing command for the image data is input; (d) checking whether password input window data corresponding to each character of the input user password exists when the user password is input; (e) reproducing the corresponding password input window data if it exists; (f) repeating steps (d) and (e) to the last digit of the user password; And and (g) comparing the last character of the password when the character of the last digit of the user password is input, and reproducing the image data if they match. The method of claim 4, wherein If a password input window data corresponding to a predetermined digit of the user password does not exist, displaying a predetermined password input window to the last digit of the user password; And And displaying a non-playback message for the video data when inputting the last digit of the user password is completed.

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