KR20050076120A - Child lock control method of disc - Google Patents

Abstract

The present invention relates to a method of controlling a child lock of a playback disc which can perform selective child lock control of the playback disc according to a pattern arbitrarily extracted by a user. A child lock control method of a play disc according to the present invention is characterized in that the user captures and stores a predetermined amount of video data from the play disc, and controls child lock to be set for the play disc including the stored video data. do. During the playback operation of any playback disc, it is checked whether child lock is set on the basis of the stored video data and controls whether playback of the playback disc is permitted. In particular, in the present invention, a very small amount, that is, video data of one horizontal line, is stored as reference data in order to set child locks for a plurality of playback disks. Therefore, the present invention enables the simultaneous management of a large amount of playback discs by minimizing the amount of reference data.

Description

Child lock control method of play disc {Child lock control method of Disc}

The present invention relates to a method of controlling a child lock of a playback disc, and more particularly, to a child lock control method of a playback disc capable of performing selective child lock control of a playback disc based on a pattern arbitrarily extracted by a user.

Magnetic tapes have been widely used as a medium for recording video signals. In recent years, along with the development of semiconductor technology, recording media have also been developing, such as DVD and CD. In particular, in the case of DVDs, various languages, various angles of video signals, digital recording methods, and the like, have been combined with various technologies that have not been considered in the past, and thus provide excellent functions to users and consumers.

As such, the development of the video media provides users and consumers with pleasure and curiosity about newness, but on the contrary, children are also concerned about side effects.

The child lock control of a conventional playback disc merely allows a grade to be displayed on a video recording medium, and the viewer decides to watch on the basis of the grade displayed on the video recording medium. However, this was a completely impossible control for children whose criteria for judgment were not yet established.

As another method, a lock is set in a playback system that plays back a playback disc. After a password is set using a specific key of a remote controller, the system is operated when the password is input. However, this method also had a problem that the system is released when the power is interrupted.

Therefore, the child lock of a reproduction disk on which a conventional video signal is recorded has a problem that its control is very difficult.

Accordingly, an object of the present invention is to provide a method of controlling a child lock of a playback disc capable of performing selective child lock control of a playback disc based on a pattern arbitrarily extracted by a user.

A child lock control method of a playback disc according to the present invention for achieving the above object comprises: a storage step of arbitrarily extracting and storing image data from a plurality of playback discs; A child lock setting step of setting a child lock according to a password setting of a plurality of playback discs including the image data stored in the storing step; A judging step of judging whether a video data identical to the stored plurality of video data is detected in a playback operation of an arbitrary playback disk; A first control step of confirming the password set in the child lock setting step, releasing the child lock if the input password is the same, and prohibiting playback of the play disc if the same image data is identical to the stored plurality of image data; When there is no same image data as the stored plurality of image data, a second control step of releasing the child lock is included, wherein the selective child lock control of the playback disc is performed according to a pattern randomly extracted by the user.

In the storing step of the present invention, the position data of the extracted image data is stored together, and the determining step is characterized in that the image data corresponding to the stored position data is read and judged from a playback disk.

The storing step of the present invention is characterized by extracting and storing image data of a specific position from a plurality of playback disks.

Hereinafter, a child lock control method of a playback disc according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a control block diagram for child lock control of a playback disk according to the present invention.

The present invention controls the child lock of a video recording medium for recording a video signal such as a DVD. Therefore, a dvd pickup 1 for securing a playback signal from a playback disk such as a DVD is included. The reproduction signal of the dvd pickup 1 is subjected to signal processing by an amplification and binary signal in the RF signal processing unit 3, and a signal for reproducing the digital video signal and the digital audio signal by the digital signal processing unit 5 (DSP). Processing takes place. The digital video signal and the digital audio signal output from the DSP 5 are restored to the original video signal and the audio signal by the MPEG decoder 7.

In addition, the present invention includes a microcomputer 11 that controls the above configurations to control the playback of a playback disc. In the present invention, the microcomputer 11 records the pattern data extracted arbitrarily by the user, and performs control for determining whether to play a playback disk based on the pattern data. The pattern data is extracted and stored only in a certain portion of the playback disk. A plurality of the pattern data are stored at the same time. That is, it is possible to store a very large number of the pattern data as far as the amount of memory allows. Therefore, the pattern data is good for one frame and one field, but it is preferable to store only one horizontal line data of a specific frame.

In addition, although the said pattern data may be stored in the memory in the said microcomputer 11, it is also preferable to use the EEPROM 13 which is a nonvolatile memory. That is, the EEPROM 13 is used to extract and store a large amount of pattern data. Therefore, the present invention includes the EEPROM.

In addition, a RAM 9 for temporarily storing the output data of the MPEG decoder 7 and a signal input unit 15 for inputting a reproduction signal, a child lock setting signal, etc. to the microcomputer 11 are included.

The following describes an operation process for the child lock control of a playback disk according to the present invention having the above configuration.

2 is a control flowchart for setting a child lock of a playback disc in the present invention.

When the play disk is seated and a play signal is applied through the signal input unit 15, the microcomputer 11 controls the play operation of the play disk.

The reproduction signal read out from the dvd pickup 1 under the control of the microcomputer 11 is input to the RF signal processor 3. The RF signal processing unit 3 amplifies the read signal read out to a signal size capable of signal processing, and processes the amplified reproduced signal as a binary signal.

The reproduction signal processed by the RF signal processor 3 is input to the DSP 5. The DSP 5 converts the inputted reproduction signal into a digital video signal and a digital audio signal, and the video signal and the audio signal digitally processed by the DSP 5 are restored to the original signal by the MPEG decoder 7. Is displayed on the display.

When the child lock setting key is selected by the user and input from the signal input unit 15 while the DVD playback operation is performed (step 100), the microcomputer 11 variably sets the playback mode to the pause mode. In addition, the MPEG decoder 7 is controlled to capture image data of the paused time point (step 110).

The image data captured in step 110 is preferably image data of an initial playback process. This may be followed by the child lock confirmation mode during playback in the child lock confirmation mode process, for this purpose it is desirable to capture the initial image data playback. In the case of a DVD capable of recording video data for several titles, it is preferable to capture video data for the first scene for each title.

The image data is temporarily stored in the RAM 9, and some data (eg, one horizontal line) is read from the stored data and stored in the EEPROM 13 (S120). In step 120, location data of the stored image data may be stored together. Therefore, in the case where a plurality of video data is stored, it is preferable to set the child lock by using video data of the same position from each of the same playback disks for easy control.

In addition, the microcomputer 11 sets a password for determining whether to permit playback of the playback disc including the image data stored in the operation 120 (operation 130). In the step 130, the same password may be set for all image data stored in the EEPROM 13 or a different password may be set for each image data. In general, the same password is preferred.

If the password set in step 130 is stored, an operation mode for setting a child lock is completed (step 140).

As described above, the child lock setting mode illustrated in FIG. 2 is performed in the same process for each playback disk to which the user wants to set child lock. Therefore, the user extracts some data from the playback disk and stores it in the EEPROM in the same manner as for the playback disk to which the child lock should be set among the plurality of playback disks that the user possesses. At this time, if the video data extracted from each of the playback disks and the position data of each of the video data are stored in the EEPROM, the video data is compared and analyzed based on the position data stored in the EEPROM during the playback of any playback disk. It is possible to control whether or not the disk is permitted.

Next, FIG. 3 is an operation flowchart for checking whether or not a child lock is set in a play disc according to the present invention and controlling whether a play disc is played.

The user mounts an arbitrary playback disc and activates the playback mode via the signal input unit 15. When the play mode command is input, the microcomputer 11 checks whether a child lock is set in the current system based on the data stored in the EEPROM 13, and checks the child lock before the play mode when the child lock is set. (Step 200). The child lock confirmation mode of step 200 may be controlled to be performed at the time point when the image data to which the child lock is set is detected during the reproduction operation.

The microcomputer 11 reads the information in which the position data is recorded from the playback disk. Then, the position data of the child lock setting video data stored in the EEPROM 13 is read. Then, the video data corresponding to the set position data is read from the playback disk through the dvd pickup 1, and after the amplification and binary processing of the playback signal by the RF signal processing section 3, the digital video signal and digital signal are executed by the DSP 5; Audio signal processing is performed. The signal processed digital signal is decoded by the MPEG decoder 7 and then temporarily stored in the RAM 9 (step 203).

When the video data at a predetermined position is detected from the playback disk in step 203, the microcomputer 11 reads reference data for determining whether to permit playback on the EEPROM 13 (step 206).

The microcomputer 11 compares the video data detected from the playback disk stored in the RAM 9 with the reference data, and determines whether the two video data are the same (step 209). In step 209, all the reference data stored in the EEPROM 13 are sequentially compared. That is, since the EEPROM 13 stores child lock setting image data for a plurality of playback disks and does not know which playback disk is currently seated in the system, the video data detected in step 203 and the first video data are stored. A sequential comparison process is performed on all image data of the EEPROM 13 read in step 206.

If the same reference data as the image data detected from the playback disk exists in the EEPROM 13 in the comparison process of step 209, the microcomputer 11 proceeds with a process for confirming the password. In other words, the user is prompted to enter a password (step 215), and the user enters the password.

When the password input by the user and the preset password are the same (step 218), the microcomputer 11 releases the set child lock mode and permits playback of the playback disk (Step 221). step).

However, when the passwords do not match in step 218, the microcomputer 11 controls the dvd pickup 1 or the MPEG decoder 7 and the like to prohibit playback of the playback disc currently seated in the system (step 224). .

When the reference data identical to the image data detected from the playback disk does not exist in the EEPROM 13 in the comparison process of step 209, the microcomputer 11 releases the child lock mode and the playback disk currently seated in the system. Playback is allowed (step 212).

As described above, the method of controlling a child lock of a playback disc according to the present invention controls the user to capture and store a predetermined amount of video data from the playback disc and to set child lock for the playback disc including the stored video data. Characterized in that. During the playback operation of any playback disc, it is checked whether child lock is set on the basis of the stored video data and controls whether playback of the playback disc is permitted. In particular, in the present invention, a very small amount, that is, video data of one horizontal line, is stored as reference data in order to set child locks for a plurality of playback disks. Therefore, the present invention enables the simultaneous management of a large amount of playback discs by minimizing the amount of reference data.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

The child lock control method for a playback disc according to the present invention described above can perform selective child lock control of a playback disc according to a pattern arbitrarily extracted by a user. In particular, according to the present invention, the child lock can be set and controlled regardless of power interruption by storing the extracted image data in a nonvolatile memory. In addition, the present invention can minimize the image data of the extracted pattern, and at the same time, it is possible to obtain the effect of child lock management for a large amount of playback disk.

1 is a control block diagram for child lock control of a playback disk according to the present invention;

2 is an operation flowchart of a child lock setting mode of a playback disc according to the present invention;

3 is an operation flowchart of a child lock confirmation mode of a playback disc according to the present invention;

Explanation of symbols on the main parts of the drawings

1: DVD pickup 3: RF signal processor

5: DSP 7: MPEG decoder

9: RAM 11: microcomputer

13: EEPROM 15: Signal input unit

Claims (3)

A storage step of arbitrarily extracting and storing image data from a plurality of playback disks; A child lock setting step of setting a child lock according to a password setting of a plurality of playback discs including the image data stored in the storing step; A judging step of judging whether a video data identical to the stored plurality of video data is detected in a playback operation of an arbitrary playback disk; A first control step of confirming the password set in the child lock setting step, releasing the child lock if the input password is the same, and prohibiting playback of the play disc if the same image data is identical to the stored plurality of image data; And a second control step of releasing child lock when there is no same image data as a plurality of stored image data, wherein the child disc performs selective child lock control of the play disk according to a pattern randomly extracted by a user. Child lock control method. The method of claim 1, In the storing step, the position data of the extracted image data is stored together, The determining step, the child lock control method of the playback disk, characterized in that for reading the image data corresponding to the stored position data from the playback disk to determine. The method of claim 1, And the storing step extracts and stores image data of a specific position from a plurality of playback disks.