30 results about "Information sector" patented technology

The present invention relates to a product identification data management system and method. According to the present invention, an input device of a purchasing department reads a bar code and an RF tag as data of two identification data systems added to a product such that the identification data of the two identification data systems are related with each other. The read bar code data and RF tag data are stored and managed in first and second databases of a information department, respectively. When a user terminal such as a product data terminal issues a request to acquire predetermined data on the basis of the bar code data of the product, the predetermined data is retrieved from either or both of the first and second databases. The acquired data is returned to the user terminal. The consistency between identification data added to each product can also be checked.

According to a recording method for a conventional rewritable disc, the latest data is recorded by rewriting data in an identical area. In the case of a disc of which the number of times of data rewrite is limited, this causes a problem that a defect block is easily generated. The present invention has an objective of providing an information recording medium, an information recording and reproduction method, and an information recording and reproduction system apparatus, by which data is recorded sequentially from an unallocated area after an entry sector number, and data recording is sequentially repeated from an inner portion to an outer portion.

A regular sense amplifier and a defect-information sense amplifier are provided for each regular sector and each defect-information sector, respectively. This can prevent an excess load from being applied to a read path, and minimize the access time. A write amplifier is provided in common to the regular sector, the reference sector, and the defect-information sector. Generally, the write operation time of a nonvolatile semiconductor memory is long, so that an increase in a wiring load on a data transmission path and an increase in a load on a switch do not affect the write operation time much. As a result, the circuit scale can be made smaller without lengthening the read access time, and thereby the fabrication cost of the nonvolatile semiconductor memory can be reduced.

In a semiconductor device including a control circuit and a memory, the memory includes at least a sector for preventing additional writing and an information sector. When data for preventing additional writing is written to the sector for preventing additional writing and information is written to the information sector which is electrically connected to the sector for preventing additional writing, additional writing to the information sector is impossible.

The invention provides a disk protection system of a tree-form multilayer cover layer of a sector increment and an implementing method thereof. The disk protection system and the implementing method comprise a disk filter drive, a configuration information module, a current layer and a history cover layer, wherein the disk filter drive is used for implementing reading-writing redirections to writing filter data of a protected partition through the current layer and the history cover layer, the configuration information module is used for storing a configuration information structure which consists of multiple levels structures; the multiple levels of structures include a disk protection system configuration information sector, multiple cover layer information of each partition, position information of each cover layer of the partition and a layer information sector in turn; the address of the next level of structure is stored in the front level of structure, and the tree-form hierarchical structure of multiple layers of cover layers can be analyzed only through the disk protection system configuration information sector. According to the disk protection system and the implementing method, multiple layers of covering layers are effectively organized through a configuration information structure so as to support multiple functions of the cover layers, each cover layer is of a tree-form organization structure, and the privacy and the safety of the data in each cover layer can be protected.

Protection from uncorrectable media errors are provided for a RAID-configured storage system by a technique in which c redundancy information sectors are associated with n data information sectors. The n data sectors and c redundancy information sectors are then written as a single segment on a single storage unit. The RAID-configured storage system can be configured, for example, as a RAID 6 storage system, a RAID 5 storage system, a RAID 51 storage system, a RAID 3+3 storage system or a RAID N+3 storage system. The redundancy information can be based on a Reed-Solomon code, an XOR-based code, or one-dimensional parity.

One embodiment disclosed is method for protecting data stored on at least one storage unit against uncorrectable media errors. The method includes associating a given redundancy set of at least one redundancy information sector (R) with a given data set of at least two data information sectors (D). The information content of the redundancy set is computed dependent on the information content of the data set. A storing operation stores the information content of the redundancy set consecutively with the information content of the data set forming a segment such that the redundancy set is placed logically in between a first part and a second part of the data set, and accessing at least one data information sector (D) in the data set by reading and / or writing the information content of the at least one data information sector (D) and at least one redundancy information sector (R) in the redundancy set with a single request.