Information retrieving system
AssigneeHitachi Maxell, Ltd.
InventorsKenichi Kitta, Atsuki Hirose, Yatani Ishikawa
Life of this patent
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Abstract
An information retrieving system in which information arranged by a series of more than one character is inputted and data corresponding to said input information is read out from a disk-shaped recording medium, such that every time the characters of the input information are successively inputted, a head is seeked for a direction of a recording position of the data on the disk-shaped recording medium, corresponding to the input information, and also the head is located at the recording position of the data upon completion of the entry operation of the input information.
Claims18
An information retrieving system wherein information arranged by a series of characters is inputted and data corresponding to said inputted information is read out from a disk-shaped recording medium, comprising:
- a disk-shaped recording medium, and
- a head which searches for a direction of a recording position of said data on said disk-shaped recording medium, corresponding to said inputted information, every time a character of the series of characters of said inputted information is successively inputted,
- said head stopping at said recording position of said data upon completion of an entry operation of said inputted information.
An information retrieving system comprising:
- a disk-shaped recording medium, for storing retrievable information data recorded under a predetermined rule, and
- a retrieving apparatus, including:
- input means for inputting information via retrieving keys;
- data reading means for reading out said retrievable information data recorded at a position of said disk-shaped recording medium by moving in a radial direction of said disk-shaped recording medium in accordance with instruction from a control means;
- memory means for storing a retrievable table comprising index information comprised of index data structured by a tree-structure relation based on said recorded predetermined rule of said retrievable data of said disk-shaped recording medium, placing a first character of said index data at a summit of said tree-structure relation and address information composed of addresses on said disk-shaped recording medium in connection with said retrievable data corresponding to said index information;
- and,
- control means for retrieving said retrievable table at each of said retrieving keys, every time each character of inputted information is entered
- from said input means, and to move said data reading means to said address obtained.
An information retrieving method for a retrieving apparatus comprising a disk-shaped recording medium storing retrievable data, and a retrievable table comprising index information comprised of index data structured by a tree-structure relation based on a recorded predetermined rule of the retrievable data of the disk-shaped recording medium,
- providing a plurality of key inputs for retrieving data on said disk-shaped recording medium,
- retrieving said retrievable table at each of said retrieving key inputs by one character to obtain an address on said disk-shaped recording medium, and
- moving a data reading means of said retrieving apparatus at each retrieving key input sequentially to said address to read retrievable data existing in the address on said disk-shaped recording medium.
An information retrieving system wherein information arranged by a series of characters in inputted and data corresponding to said inputted information is read out from a disk-shaped recording medium, comprising:
- a disk-shaped recording medium, and
- a head which searches for a direction of a recording position of said data on said disk-shaped recording medium, corresponding to said inputted information, every time a character of said series of characters of said inputted information is successively inputted, said head stopping at said recording position of said data upon completion of an entry operation of said inputted information wherein each position sought by said head corresponds to a recording position for that data recorded at a head position taking into consideration that data already inputted corresponding to said information arranged by said character series.
Dependencies are inferred from the claim text.