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8971results about "Redundant operation error correction" patented technology

Method and apparatus for storing information in a data processing system

A method for storing data from a data source in a storage device of a data repository by reading all source allocation units, restructuring the data into data units having a size corresponding to the repository allocation units, and generating a hash value for the data of each data unit read from the data source. For each data unit, a data table is searched for a table entry having a matching hash value wherein each table entry contains the hash value of a data unit stored in a repository allocation unit and a repository allocation unit pointer to the corresponding repository allocation unit. When the hash value of a data unit does not match any hash value of any table entry in the data table, the data of the data unit is written into a newly allocated repository allocation unit a new table entry is written to the data table. When the hash value of a data unit matches the hash value of a data entry in the data table, the data of the corresponding repository allocation unit and is compared with the data of the data unit. If the data of the data unit matches the repository allocation unit, the data unit is discarded. If the data of the data unit does not match the corresponding repository allocation unit, the data unit is written into a newly allocated repository allocation unit and a new table entry is inserted into the data table.
Owner:CHRYSALIS STORAGE

Multimedia synchronization method and device

A system and method for synchronizing a multiplicity of devices in a multimedia environment is described. The system has at least one central storage and interface device, wherein audio, video, and photographic information including content information and content management information, relating to at least one user, are stored in digital form. The system further has a plurality of zones each having a zone specific storage and interface device being capable of storing or interfacing with information stored in the central storage and interface device, wherein audio, video, or photographic information, relating to at least one user, contained within each one of the plurality of zone specific storage and interface devices and the central storage and interface device, are updated in relation with other zone specific storage and interface devices and the central storage and interface device. This results in the at least one user can be situated at anyone of the zones and access substantially identical audio, video, and photographic information related to the at least one user. The method includes providing the plurality of devices, providing the plurality of zones, determining whether a current synchronization point exists, if a previous synchronization point exists, receiving information from a server, if a previous synchronization point does not exists, sending information to a at least one client by a host, wherein the at least one user is disposed to have control, determining what information is needed by the at least one client, and establishing the resultant state as a synchronization point.
Owner:SAMSUNG ELECTRONICS CO LTD

Automatic playback overshoot correction system

An automatic playback overshoot correction system predicts the position in the program material where the user expects to be when the user stops the fast forward or reverse progression of the program material. The invention determines the position where the program material was stopped. The media controller transitions to the new mode that the user selected, starting at the stopped position with an overshoot correction factor added or subtracted from it. The invention adapts to the user by remembering how much the user corrects after he stops the fast forward or reverse mode. Correction factors are calculated using the user's corrections and adjusting the correction factors if the user continues to make corrections. The invention also uses a prediction method to correctly place the user within the program upon transition out of either mode and determines if the speed of the fast forward or reverse modes and then automatically subtracts or adds, respectively, a time multiple to the frame where the transition was detected and positions the user at the correct frame. The time multiple is fine tuned if the user is consistently correcting after the fast forward or rewind mode stops. Another method initially tests the user's reaction time using a test video and asks the user to press the fast forward or reverse button on his control device during the test video and then asks the user to position the video to the place that he expected the system to have been. This time span is then used whenever the user uses the fast forward or reverse modes and is adjusted with a multiple for each speed. A final method allows the user to simply set a sensitivity setting that the system will use as a correction factor and a multiple is subtracted or added to the release frame whenever the user uses the fast forward or reverse modes, respectively.
Owner:TIVO SOLUTIONS INC

Method and apparatus for immediate data backup by duplicating pointers and freezing pointer/data counterparts

An expedited data backup is performed by creating a duplicate set of pointers to a current dataset already identified by an original pointer set, then designating the dataset as a backup dataset, and thereafter preventing changes to the pointed-to-data and the duplicate pointers, where changes to the current dataset are nonetheless effected by storing new data and modifying the original pointer set alone. More specifically, the backup involves an original dataset having multiple subparts residing at various original storage locations, which are pointed-to by a primary set of pointers. A virtual backup copy is created by duplicating the primary set of pointers to create a backup set of pointers. The backup set of pointers are entered in a backup list, in association with the virtual backup copy and the original dataset. To preserve the backup copy, the system prevents changes to the original dataset and the backup set of pointers. When any changes are directed to subparts of the original dataset, the system creates a changed dataset by storing the changes at one or more change storage locations and updating the primary set of pointers to identify the change storage locations along with any original storage locations still containing unchanged subparts of the original dataset. In addition to expediting data backups, fast data recovery is possible by updating the primary set of pointers to duplicate the backup set of pointers.
Owner:IBM CORP
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