Systems and methods for logically organizing data for storage and recovery on a data storage medium using a multi-level format are described. Embodiments include systems and methods for protecting data stored on a data storage medium so that the data may be recovered without errors.

An optical disc apparatus includes: a controller configured to acquire information of an access result and access positions on an optical disc when an optical disc drive unit configured to optically access an optical disc optically accesses the optical disc; and a storage configured to store the information acquired by the controller.

Audiovisual reproduction system comprising a central unit managing a sound control circuit, and a telecommunications modem connected to a distribution network controlled by a host server, through a multitask operating system created around a tools and services library, characterized in that the operating system comprises a function that adjusts the sound control circuit to couple volumes in the various areas in which the loudspeakers in the audiovisual reproduction system are used, this function being accessible through a management mode of the multitask operating system, the coupling maintaining the ratios between the various volumes in each area when the volume in one area is modified.

This invention describes a method, apparatus, and system for data storage that increases drive capacity, minimizes latency, reduces write access time, and improves drive lifetime. In one embodiment, a composite hard disk drive is provided with multiple recording media platters labeled from 1 to n, where n is greater than or equal to 5. An integer n1 between 1 and n is included, and n1 is less than n/2. The recording media platter labeled from 1 to n1 is written using a first recording technology (RT) or a first write architecture (WA), while all other recording media platters are written using a second RT or a second WA. The recording head and recording media surface corresponding to the recording media platter labeled from 1 to n1 have a design, material, structure, number of sensors and transducers integrated, or critical specification that is different from the recording head and recording media surface corresponding to other recording media platters. Additionally, two or more preamps are connected to multiple recording head HGAs through a flex line for recording heads corresponding to different RTs or different WAs.

An optical disc apparatus includes: a controller configured to acquire information of an access result and access positions on an optical disc when an optical disc drive unit configured to optically access an optical disc optically accesses the optical disc; and a storage configured to store the information acquired by the controller.

A system and method for a media processor separates the functions of topology creation and maintenance from the functions of processing data through a topology. The system includes a control layer including a topology generating element to generate a topology describing a set of input multimedia streams, one or more sources for the input multimedia streams, a sequence of operations to perform on the multimedia data, and a set of output multimedia streams, and a media processor to govern the passing of the multimedia data as described in the topology and govern the performance of the sequence of multimedia operations on the multimedia data to create the set of output multimedia streams. The core layer includes the input media streams, the sources for the input multimedia streams, one or more transforms to operate on the multimedia data, stream sinks, and media sinks to provide the set of output multimedia streams.