摘要:
A digital video disk reproducing device utilizes a single memory both for error correction and for data buffering. The device designates a unit number to each sector of the memory and determines first, second and third regions. The first region corresponds to an absolute value of a unit number obtained by subtracting a unit number Y of a sector where a data read/write operation is completed during the descrambling from a unit number X of a start sector in an error correction block where the error correction is completed. The second region corresponds to an absolute value of a unit number obtained by subtracting a unit number Z of a sector where the data is completely transferred to the audio/video decoders or the ROM decoder from the unit number Y. The third region corresponds to an absolute value of a unit number obtained by subtracting the unit number Z from a unit number W of a sector where a writing operation of demodulated data is completed. Thereafter, the devices controls a W-pointer and a Z-pointer not to overfill a Z-pointer and a Y-pointer respectively, and controls an X-pointer and the Y-pointer not to pass ahead of the W-pointer and the X-pointer, respectively.
摘要:
Provided is a method of solubilizing a poorly soluble/insoluble active material through formation of an oligomer composite, in which a structure having a hydrophobic cavity structure is formed by using oligomers derived from two types of hydrophilic natural polymers and a poorly soluble/insoluble component is encapsulated in the cavity structure, and thus, self-aggregation of the poorly soluble/insoluble material is prevented and simultaneously, thermodynamic stability increases to effectively solubilize the poorly soluble/insoluble material. According to the constitution of the present invention, the method may include a first operation of preparing an oligomer composite having a cavity structure formed therein by mixing and dissolving oligomers derived from two types of hydrophilic natural polymers in water, and a second operation of adding a poorly soluble/insoluble material to the oligomer composite to encapsulate the poorly soluble/insoluble material in the hydrophobic cavity structure of the oligomer composite.
摘要:
An information storage medium has user data areas and additional data areas, and sync patterns to distinguish the additional data areas from the user data areas. The information storage medium includes a user data area in which user data is recorded and an additional data area located in at least one of areas before and after the user data area. Second sync patterns used in the additional data area are different from first sync patterns used in the user data area.
摘要:
A BCA (Burst Cutting Area) code including a unique disk code indicating the type of a disk is written in a BCA code area of the disk. If the disk is mounted into the optical disk player, the optical disk player reads data written in the BCA code area, extracts the disk code contained in the read data, and confirms the type of the disk corresponding to the extracted disk code by retrieving a disk code table in which disk codes corresponding to the types of disks are mapped.
摘要:
A motor rotation control device for an optical disk player including a motor outputting rotation signals, a sensor for sensing the rotational direction and rotational state of the motor in response to rotation signals of the motor, a motor control signal generator for generating a motor control signal according to the rotational direction and rotational state of the motor, and a motor rotation controller for controlling the rotation of the motor in response to the motor control signal. The motor rotation control device operates independently of a system controller, thereby reducing the load on the system controller.
摘要:
A BCA (Burst Cutting Area) code including a unique disk code indicating the type of a disk is written in a BCA code area of the disk. If the disk is mounted into the optical disk player, the optical disk player reads data written in the BCA code area, extracts the disk code contained in the read data, and confirms the type of the disk corresponding to the extracted disk code by retrieving a disk code table in which disk codes corresponding to the types of disks are mapped.
摘要:
A control apparatus for reproducing data from a digital video disk at high speed and a method therefor. The control apparatus including a descrambler for descrambling the data which is read from the digital video disk, demodulated and error-corrected, and detecting a navigation pack sector from the data, a navigation interrupt generator for generating a navigation interrupt if the navigation pack sector is detected by the descrambler, a memory for storing the descrambled data, and a microprocessor for determining a next reproducing position of the digital video disk on the basis of information of the navigation pack sector contained in the descrambled data by accessing the memory if the navigation interrupt is detected, and controlling a driving of the digital video disk.
摘要:
Disclosed is an inexpensive and miniaturized digital video disc playback device having a system decoder capable of error correcting and data buffering by means of a single memory without employing separate error correcting and data buffering memories. The inventive system decoder for demodulating, error correcting, deinterleaving and descrambling of data reproduced from a disc in the digital video disc playback device, includes a memory and a memory controller for generating memory control signals for accessing the memory to record and read data when demodulating, error correcting and descrambling the reproduced data.