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US4998009A Expired / Lapsed US ⏱️ 0.0 years remaining

Information recording method for recording data and directories in a plurality of blocks comprising divided recording areas

Assignee: Canon Inc
•
Filing: 1988-03-22
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Granted: 1991-03-05
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Expires: 2008-03-22
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Abstract

Abstract A method of recording information on a recording medium includes generating a plurality of blocks, each having a certain, in the recording area of the recording medium and recording data and directories for effecting the control of the data in the same block in each of the blocks.

Inventors

  • 👤 Katsumi Iijima
  • 👤 Wataru Sakagami

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 20:38
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/2407; G11B7/24085; G11B20/00; G11B20/10; G11B20/12; G11B20/1215; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G11B27/327

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 122 words
A method of recording information on a recording medium having a recording area, said method comprising the steps of: (a) generating a plurality of blocks in the recording area of the recording medium, each of the blocks having a certain size; (b) accessing one of the plurality of blocks based on data content; (c) recording the data from one end portion of the selected block subsequently to any previously recorded data; (d) recording directories for effecting control of the data from an end portion of the selected block opposite to the end portion in which the data is recorded; and (e) repeating steps (b), (c) and (d) for recording subsequent data and associated directories on selected blocks of the plurality of blocks.
Claim 2
Independent Claim 122 words
A method of recording information on a recording medium having a recording area, said method comprising the steps of: (a) generating a plurality of blocks in the recording area of the recording medium, each of the blocks having a certain size; (b) accessing one of the plurality of blocks based on data content; (c) recording the data from one end portion of the selected block subsequently to any previously recorded data; (d) recording directories for effecting control of the data from an end portion of the selected block opposite to the end portion in which the data is recorded; and (e) repeating steps (b), (c) and (d) for recording subsequent data and associated directories on selected blocks of the plurality of blocks.
Claim 3
Dependent Claim 32 words
A method according to claim 1, wherein the recording medium comprises an optical recording medium and the steps of recording the data and directories comprise applying a light beam to the medium.
Claim 4
Dependent Claim 13 words
A method according to claim 2, wherein the recording medium comprises a card.
Claim 5
Independent Claim 134 words
A method of recording information on a recording medium having a recording area, said method comprising the steps of: (a) generating a plurality of blocks in the recording area of the recording medium, each of the blocks each having a certain size; (b) recording marks in boundary portions between the plurality of blocks; (c) accessing one of the plurality of blocks based on data content; (d) recording the data from one end portion of the selected block subsequently to any previously recorded data; (e) recording directories for effecting control of the data from an end portion of the selected block opposite to the end portion in which the data is recorded; and (f) repeating steps (c), (d) and (e) for recording subsequent data and associated directories on selected blocks of the plurality of blocks.
Claim 6
Independent Claim 134 words
A method of recording information on a recording medium having a recording area, said method comprising the steps of: (a) generating a plurality of blocks in the recording area of the recording medium, each of the blocks each having a certain size; (b) recording marks in boundary portions between the plurality of blocks; (c) accessing one of the plurality of blocks based on data content; (d) recording the data from one end portion of the selected block subsequently to any previously recorded data; (e) recording directories for effecting control of the data from an end portion of the selected block opposite to the end portion in which the data is recorded; and (f) repeating steps (c), (d) and (e) for recording subsequent data and associated directories on selected blocks of the plurality of blocks.
Claim 7
Dependent Claim 33 words
A method according to claim 4, wherein the recording medium comprises an optical recording medium and the steps of recording the marks, data and directories comprise applying a light beam to the medium
Claim 8
Dependent Claim 13 words
A method according to claim 5, wherein the recording medium comprises a card.
Claim 9
Independent Claim 164 words
A method of recording information on a recording medium having a recording area, said method comprising the steps of: (a) generating a plurality of blocks in the recording area of the recording medium, each of the blocks having a certain size; (b) recording a false data signal in one end portion of each of the plurality of blocks; (c) recording a false directory signal in an end portion of each of the plurality of blocks opposite to the end portion in which the false data signal is recorded; (d) accessing one of the plurality of blocks based on data content; (d) recording a data signal in the selected block subsequently to the false data signal and subsequently to any previously recorded data signal; (f) recording directories in the selected block for effecting control of the data subsequently to the false directory signal; and repeating steps (d), (e) and (f) for recording subsequent data and associated directories on selected blocks of the plurality of blocks.
Claim 10
Independent Claim 164 words
A method of recording information on a recording medium having a recording area, said method comprising the steps of: (a) generating a plurality of blocks in the recording area of the recording medium, each of the blocks having a certain size; (b) recording a false data signal in one end portion of each of the plurality of blocks; (c) recording a false directory signal in an end portion of each of the plurality of blocks opposite to the end portion in which the false data signal is recorded; (d) accessing one of the plurality of blocks based on data content; (d) recording a data signal in the selected block subsequently to the false data signal and subsequently to any previously recorded data signal; (f) recording directories in the selected block for effecting control of the data subsequently to the false directory signal; and repeating steps (d), (e) and (f) for recording subsequent data and associated directories on selected blocks of the plurality of blocks.
Claim 11
Dependent Claim 38 words
A method according to claim 7, wherein the recording medium comprises an optical recording medium and the steps of recording the false data signal, false directory signal, data and directories comprise applying a light beam to the medium.
Claim 12
Dependent Claim 13 words
A method according to claim 8, wherein the recording medium comprises a card.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-03-04 1994-09-03 1995-03-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-03-04 1998-09-03 1999-03-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-03-04 2002-09-03 2003-03-05 $7700.00 Window Closed / Lapsed

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