Abstract: A reproduction device of a recording medium and a method for operating the same are disclosed. The reproduction device of a recording medium comprises a recording medium loading unit loading the recording medium, and inputting and/or outputting data of the recording medium; a main board provided with a central processing unit implementing reproduction of the recording medium in accordance with an input signal or a previously set program; and a key operation unit directly connected with a loader of the recording medium loading unit. Accordingly, the sub application processing open and/or close of the recording medium loading unit is actuated after a power supply of the reproduction device is turned, whereby the time required to detach or insert the recording medium from or to the reproduction device can be reduced.

Abstract: A reproduction device of a recording medium and a method for operating the same are disclosed. The reproduction device of a recording medium comprises a recording medium loading unit loading the recording medium, and inputting and/or outputting data of the recording medium; a main board provided with a central processing unit implementing reproduction of the recording medium in accordance with an input signal or a previously set program; and a key operation unit directly connected with a loader of the recording medium loading unit. Accordingly, the sub application processing open and/or close of the recording medium loading unit is actuated after a power supply of the reproduction device is turned, whereby the time required to detach or insert the recording medium from or to the reproduction device can be reduced.

Abstract: In one embodiment, the recording medium includes a management area storing management information. The management information includes navigation information for reproducing data from the recording medium, and the navigation information including region information. The region information indicates at least one geographic region in which reproduction of the data is permitted.

Abstract: In one embodiment, the recording medium includes a management area storing management information. The management information includes navigation information for reproducing data from the recording medium, and the navigation information including region information. The region information indicates at least one geographic region in which reproduction of the data is permitted.

Abstract: The present invention relates to a high-density disk that is structured to prevent a collision of an optical pickup's objective lens with the high-density disk if the disk is placed upside down in a disk device that is able to record and reproduce signals to/from the high-density disk. A high-density disk recording medium according to the present invention has a reflecting thin film or label, formed on a surface opposite to a recording surface, to block a beam incident to an inserted disk not to travel up to a lead-in area, which a disk device tries to read first when a disk is placed, in the event that the inserted disk has been misplaced upside down.

Abstract: Disclosed is a method of preventing optical recording media from being fractured and apparatus thereof, which enable to prevent an optical disc of an optical disc drive from being fractured due to a crack. The method and apparatus comprise: detecting a first tracking error signal outputted from a data recording/reproducing apparatus when the optical recording media are rotated at a first speed; detecting a second tracking error signal outputted from the data recording/reproducing apparatus when the optical recording media are rotated at a second speed; determining whether or not the crack on the optical disc exists on the basis of the first tracking error signal and the second tracking error signal; and stopping an operation of the data recording/reproducing apparatus when the optical recording media have the crack.

Abstract: Disclosed is an optical disc cartridge comprising: a casing having a disc inserting/opening part for inserting and taking out a disc at an upper surface thereof and having an access hole to which an optical pickup accesses at a lower surface thereof; a pair of shutters mounted in the casing, for opening and closing the access hole and contact-supporting a disc at two points or at one point; a rotation wheel rotatably coupled to the shutters, for moving the shutters and placing an optical disc thereon; a wheel fixing/releasing means mounted at an inner side of the casing, for fixing or releasing the rotation wheel; and a disc fixing/releasing means movably mounted at the casing, for controlling a size of the disc inserting/opening part and thereby limiting an insertion/takeout of an optical disc into/from the disc inputting opening, and an apparatus of recording or reproducing data on or from an optical disc, comprising: a driving unit rotating an optical disc inserted in the optical disc cartridge; and a reco

Abstract: In one embodiment, the recording medium includes a management area storing management information. The management information includes navigation information for reproducing data from the recording medium, and the navigation information including region information. The region information indicates at least one geographic region in which reproduction of the data is permitted.

Abstract: A tray of an optical disk player including a disk mounting portion on which an optical disk is stably mounted; a front wall formed on the front to surround the disk mounting portion; a rear wall formed on the rear of the tray to surround the disk mounting portion, the front wall is formed to have a distance from the center of a spindle to the front wall not less than a value obtained by adding 2.75 mm to a radius of a large-sized disk and not greater than a distance from the center of the spindle to a tray front end. In the tray, by increasing a flutter occurrence speed, although the optical disk player has a high recording/reproducing speed, occurrence of flutter can be prevented, and accordingly it is possible to reduce error in disk reproducing/recording and prevent noise occurrence and wrong operation.

Abstract: In a lock of information reproducer for car, when a passenger or a driver stays in a car, in more detail, only when a car key is inserted into a car key holder (power of the car is ON), an information reproducer can be detached from a contact support unit, when the key is taken out of the key holder, the information reproducer can not be detached from the contact support unit, and accordingly theft of the information reproducer can be efficiently prevented in parking.

Abstract: Disclosed is an optical disc cartridge comprising: a casing having a disc inserting/opening part for inserting and taking out a disc at an upper surface thereof and having an access hole to which an optical pickup accesses at a lower surface thereof; a pair of shutters mounted in the casing, for opening and closing the access hole and contact-supporting a disc at two points or at one point; a rotation wheel rotatably coupled to the shutters, for moving the shutters and placing an optical disc thereon; a wheel fixing/releasing means mounted at an inner side of the casing, for fixing or releasing the rotation wheel; and a disc fixing/releasing means movably mounted at the casing, for controlling a size of the disc inserting/opening part and thereby limiting an insertion/takeout of an optical disc into/from the disc inputting opening, and an apparatus of recording or reproducing data on or from an optical disc, comprising: a driving unit rotating an optical disc inserted in the optical disc cartridge; and a reco

Abstract: Disclosed is a method of preventing optical recording media from being fractured and apparatus thereof, which enable to prevent an optical disc of an optical disc drive from being fractured due to a crack. The method and apparatus comprise: detecting a first tracking error signal outputted from a data recording/reproducing apparatus when the optical recording media are rotated at a first speed; detecting a second tracking error signal outputted from the data recording/reproducing apparatus when the optical recording media are rotated at a second speed; determining whether or not the crack on the optical disc exists on the basis of the first tracking error signal and the second tracking error signal; and stopping an operation of the data recording/reproducing apparatus when the optical recording media have the crack.

Abstract: In a tray of an optical disk player including a disk mounting portion on which an optical disk is stably mounted; a front wall formed on the front of a tray to surround the disk mounting portion; and a rear wall formed on the rear of the tray to surround the disk mounting portion, a tray of an optical disk player, a front wall is formed so as to have a distance from the center of a spindle to the front wall not less than a value obtained by adding 2.75 mm to a radius of a large-sized disk and not greater than a distance from the center of the spindle to a front tray. In the tray, by increasing a flutter occurrence speed, although the optical disk player has a high recording/reproducing speed, occurrence of flutter can be prevented, and accordingly it is possible to reduce error in disk reproducing/recording and prevent noise occurrence and wrong operation.

Abstract: In a lock of information reproducer for car, when a passenger or a driver stays in a car, in more detail, only when a car key is inserted into a car key holder (power of the car is ON), an information reproducer can be detached from a contact support unit, when the key is taken out of the key holder, the information reproducer can not be detached from the contact support unit, and accordingly theft of the information reproducer can be efficiently prevented in parking.

Abstract: The present invention relates to a high-density disk that is structured to prevent a collision of an optical pickup's objective lens with the high-density disk if the disk is placed upside down in a disk device that is able to record and reproduce signals to/from the high-density disk. A high-density disk recording medium according to the present invention has a reflecting thin film or label, formed on a surface opposite to a recording surface, to block a beam incident to an inserted disk not to travel up to a lead-in area, which a disk device tries to read first when a disk is placed, in the event that the inserted disk has been misplaced upside down.

Abstract: A toy learning apparatus using a cyber community and a method thereof comprising a cyber community having a cyber character which grows by learning in online, and a toy which grows by receiving experience of the cyber character or experience of a user's learning can increase the interest of the user, promote the sale of the toy and supply the program update of the toy, contents and various kinds of information smoothly by connecting the actual toy and the cyber character which acts in the cyber community.

Abstract: A system for programming an interactive learning device, such as electronic toy, using a web server includes a first processing unit having a web server for providing a control module used for remote processing, a second processing unit linked to the first processor through the communication medium to exchange data with the first processor, an interactive device, such as a robot toy pet, having at least a processor and a memory and adapted to communicate with the first processing unit. The interactive device includes a sensor for collecting data and formulating a learned module. The interactive device receives the control module from the first processing unit and sends the learned module. The control module is updated with more advanced function to be performed by the interactive toy in response to the content of the learned module.