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

• US 4,998,009 A
• Filed: 03/22/1988
• Issued: 03/05/1991
• Est. Priority Date: 03/31/1987
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Iijima, Katsumi, Sakagami, Wataru
• Primary Examiner(s): Levy, Stuart S.
• Assistant Examiner(s): Weinhardt, Robert
• Application Number:
  US07/171,863
• Time in Patent Office: 1,078 Days
• Field of Search: 235/487, 235/488, 235/494, 235/454, 235/456, 369/275, 369/47, 369/48, 369/54, 369/58, 369/59
• US Class Current: 235/487
• CPC Class Codes: G11B 20/1215 on cards optical aspect of optical cards G11B7/0033
• CPC Class Codes: G11B 27/327 Table of contents
• CPC Class Codes: G11B 7/24085 Pits

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.

Claims

1. 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.

2. 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.

3. A method according to claim 2, wherein the recording medium comprises a card.

4. 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.

5. 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

6. A method according to claim 5, wherein the recording medium comprises a card.

7. 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.

8. 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.

9. A method according to claim 8, wherein the recording medium comprises a card.