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AssigneeFujitsu Limited
InventorMasashi Yamawaki
Estimating the term…
In an information access device, an information access method and an information storage medium access system which are suited to quickly and reliably detect a deviation in frame management associated with erroneous detection of a synchronous mark and to perform an operation of redetecting a synchronous mark, an Even synchronous mark erroneous detector outputs a count-up signal if a synchronous mark LSY from an LPP pattern comparing portion is “111” when an Even/Odd identification signal from a frame counter assumes 1. An Odd synchronous mark erroneous detector outputs a count-up signal if the synchronous mark LSY is “110” when the Even/Odd identification signal assumes 0. An erroneous detection counter counts the number of the outputted count-up signals, which is compared with a count value set by a redetection level portion in a comparator. Then a redetection instruction signal for redetecting an LPP access synchronous mark is outputted.
An information access device that detects control information units at a synchronized timing based on detection of a specific control information unit included in a control information string when access the control information string that is added to an information unit composed of a predetermined number of data frame groups on an information storage medium and that has the control information units divided as basic units and stored in unit storage regions in which one of the data frames is a storage region and in which one or more of the other data frames are spare data frames for a spare region,
An information access device that detects control information units at a synchronized timing based on detection of a specific control information unit included in a control information string when access the control information string that is added to an information unit composed of a predetermined number of data frame groups on an information storage medium and that has the control information units divided as basic units and stored in unit storage regions in which one of the data frames is a storage region and in which one or more of the other data frames are spare data frames for a spare region,
An information access method in which control information units are detected at a synchronized timing based on detection of a specific control information unit included in a control information string when access the control information string that is added to an information unit composed of a predetermined number of data frame groups on an information storage medium and that has the control information units divided as basic units and stored in unit storage regions in which one of the data frames is a storage region and in which one or more of the other data frames are spare data frames for a spare region,
An information access method in which control information units are detected at a synchronized timing based on detection of a specific control information unit included in a control information string when access the control information string that is added to an information unit composed of a predetermined number of data frame groups on an information storage medium and that has the control information units divided as basic units and stored in unit storage regions in which one of the data frames is a storage region and in which one or more of the other data frames are spare data frames for a spare region,
An information storage medium access system comprising a control information access portion that detects control information units at a synchronized timing based on detection of a specific control information unit included in a control information string when access the control information string that is added to an information unit composed of a predetermined number of data frame groups on an information storage medium and that has the control information units divided as basic units and stored in unit storage regions in which one of the data frames is a storage region and in which one or more of the other data frames are spare data frames for a spare region,
An information storage medium access system comprising a control information access portion that detects control information units at a synchronized timing based on detection of a specific control information unit included in a control information string when access the control information string that is added to an information unit composed of a predetermined number of data frame groups on an information storage medium and that has the control information units divided as basic units and stored in unit storage regions in which one of the data frames is a storage region and in which one or more of the other data frames are spare data frames for a spare region,
Dependencies are inferred from the claim text.