EP0559468A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Information recording method and apparatus
Assignee: Canon Inc
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Filing: 1993-03-04
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Granted: —
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Expires: 2013-03-04
Abstract
Abstract An information recording is performed as follows. Data is recorded in a recording carrier such as an optical card or the like. The recorded data is verified to perform an error detection. Information regarding detected errors is recorded in a first directory on the recording carrier. When all of the information regarding errors can not be recorded in the first directory on the recording carrier, the remaining information regarding errors other than the information recorded in the first directory is recorded in a second directory on the recording carrier. <IMAGE>
Inventors
- 👤 Masahiro C/O Canon Kabushiki Kaisha Tamegai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:40
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G11B27/327; G06; G06F; G06F16/00; G06F16/90; G06F16/901; G06F16/9017; G11B20/00; G11B20/10; G11B20/12; G11B20/1215; G11B20/18; G11B20/1883; G11C; G11C29/00; G11C29/70; G11C29/88; G11B20/1816; G11B2020/183; G11C29/76
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
73 words
An information recording method comprising the steps of: recording data in a recording carrier; verifying the recorded data to perform error detection; recording information related to detected errors in a first directory on said recording carrier; and if not all of the information related to errors can be recorded in said first directory, recording the remaining information, except the information recorded in said first directory, in a second directory on said recording carrier.
Claim 2
Dependent Claim
30 words
A method according to claim 1, further comprising the step of recording identification information in each of said first and second directories to distinguish between said first and second directories.
Claim 3
Dependent Claim
66 words
A method according to claim 1, wherein said recording carrier has a plurality of sectors for recording data, each of which is given a sector address, and the information related to errors consists of a sector address of a first sector in a block constituted by at least one continuous sector, in which the errors are detected, and the number of sectors contained in the block.
Claim 4
Dependent Claim
25 words
A method according to claim 1, further comprising the step of recording a file name and a file size of data in said first directory.
Claim 5
Dependent Claim
46 words
A method according to claim 1, wherein said recording carrier comprises an optical card, data are recorded in sequence from one end portion of said optical card, and the information related to errors is recorded in sequence from the other end portion of said optical card.
Claim 6
Dependent Claim
59 words
A method according to claim 1, wherein the step of verifying the recorded data to perform error detection comprises the steps of storing data in a buffer memory before the data is recorded in said recording carrier, reading out the recorded data from said recording carrier, and comparing the readout data with the data stored in said buffer memory.
Claim 7
Dependent Claim
90 words
An information recording method comprising the steps of: recording data in a recording carrier; verifying the recorded data to perform error detection; if all of information related to detected errors can be recorded in a first directory on said recording carrier, recording all the information related to errors in said first directory; and if not all of the information related to errors can be recorded in said first directory, recording all the information related to errors not in said first directory but in a second directory on said recording carrier.
Claim 8
Dependent Claim
30 words
A method according to claim 7, further comprising the step of recording identification information in each of said first and second directories to distinguish between said first and second directories.
Claim 9
Dependent Claim
66 words
A method according to claim 7, wherein said recording carrier has a plurality of sectors for recording data, each of which is given a sector address, and the information related to errors consists of a sector address of a first sector in a block constituted by at least one continuous sector, in which the errors are detected, and the number of sectors contained in the block.
Claim 10
Dependent Claim
25 words
A method according to claim 7, further comprising the step of recording a file name and a file size of data in said first directory.
Claim 11
Dependent Claim
46 words
A method according to claim 7, wherein said recording carrier comprises an optical card, data are recorded in sequence from one end portion of said optical card, and the information related to errors is recorded in sequence from the other end portion of said optical card.
Claim 12
Dependent Claim
59 words
A method according to claim 7, wherein the step of verifying the recorded data to perform error detection comprises the steps of storing data in a buffer memory before the data is recorded in said recording carrier, reading out the recorded data from said recording carrier, and comparing the readout data with the data stored in said buffer memory.
Claim 13
Dependent Claim
98 words
An information recording apparatus comprising: data recording means for recording data in a recording carrier; error detecting means for verifying the recorded data to perform error detection; and error information recording means for recording information related to detected errors in said recording carrier, said error information recording means recording the information related to errors in a first directory on said recording carrier, and, if not all of the information related to errors can be recorded in said first directory, recording at least a portion of the information related to errors in a second directory on said recording carrier.
Claim 14
Dependent Claim
55 words
An apparatus according to claim 13, wherein if not all of the information related to errors can be recorded in said first directory, said error information recording means records some of the information related to errors in said first directory and the remaining some of the information in said second directory on said recording carrier.
Claim 15
Dependent Claim
49 words
An apparatus according to claim 13, wherein if not all of the information related to errors can be recorded in said first directory, said error information recording means records all the information related to errors not in said first directory but in said second directory on said recording carrier.
Claim 16
Dependent Claim
31 words
An apparatus according to claim 13, wherein said error information recording means records identification information in each of said first and second directories to distinguish between said first and second directories.
Claim 17
Dependent Claim
66 words
An apparatus according to claim 13, wherein said recording carrier has a plurality of sectors for recording data, each of which is given a sector address, and the information related to errors consists of a sector address of a first sector in a block constituted by at least one continuous sector, in which the errors are detected, and the number of sectors contained in the block.
Claim 18
Dependent Claim
26 words
An apparatus according to claim 13, wherein said error information recording means records a file name and a file size of data in said first directory.
Claim 19
Dependent Claim
54 words
An apparatus according to claim 13, wherein said recording carrier comprises an optical card, and said data recording means records data in sequence from one end portion of said optical card, and said error information recording means records the information related to errors in sequence from the other end portion of said optical card.
Claim 20
Dependent Claim
44 words
An apparatus according to claim 13, wherein said data recording means and said error information recording means comprise an optical system for radiating a light beam, which is modulated in accordance with the data and the information related to errors, onto said recording carrier.
Claim 21
Dependent Claim
100 words
An apparatus according to claim 13, wherein said error detecting means comprises a buffer memory for storing data before the data is recorded in said recording carrier, an optical system for radiating a light beam with a predetermined power onto a portion of said recording carrier in which data is recorded, a photodetector for detecting reflected light of the light beam from said recording carrier, a reproducing circuit for reproducing data in accordance with an output from said photodetector, and a processing circuit for comparing the data reproduced by said reproducing circuit with the data stored in said buffer memory.
Claim 22
Dependent Claim
36 words
An information recording apparatus including: means for recording data on a data carrier; means for detecting errors in the recorded data; and means for producing a record of all the detected errors on the data carrier.
Claim 23
Dependent Claim
33 words
An information recording method including the steps of: recording data on a data carrier; detecting errors in the recorded data; and producing a record of all the detected errors on the data carrier.
References Cited (Backward Citations)
No citation records indexed.
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