US 6,606,285 B1 · Method of immediate writing or reading files on a disc like recording medium

Abstract

A method of recording digital information signals on a removable rewritable disc like recording medium, the method comprising a short initialization step whereafter a blanc, unformatted medium is ready to receive user data. The initialization step comprises defining a general purpose area on the recording medium which is not intended for recording user data but for defect management and special application programs.

Claims25

Dependent claims

A method of recording digital information signals on a removable writable recording medium, the method comprising:

recording user data within a program area of a medium;
prior to removal of the medium out of a recording apparatus, finalizing the initialization with a lead-in area and a lead-out area including control information;
and
performing an initialization after inserting a blank medium into the recording apparatus, the initialization including recording control data in the lead-in area, which control data defines a general purpose area (GPA) within a program area of the medium and where after the medium is ready to record user data in a remaining data area of the program area.

1 more element

A computer data system comprising:

a computer;
and
a reproducing apparatus for reproducing digital information signals recorded on a removable writable recording medium, the reproducing apparatus being connected to the computer and including:
recording medium receiving means for receiving the removable medium;
reading means to read recorded digital information signals recorded on the removable medium;
outputting means for outputting the read digital information signals to the computer;
controlling means to control the read means and output means, the control means being connected to the computer means;
the computer controls the controlling means of the reproducing apparatus to perform defect management using the secondary defect table (SDT) obtained according to method of:
performing an initialization after inserting a blank medium into a recording apparatus, the initialization including recording control data in the lead-in area, which control data defines a general purpose area (GPA) within a program area of the medium and whereafter the medium is ready to record user data in a remaining data area of the program area;
recording user data within a program area of the medium;
prior to removal of the medium out of a recording apparatus, finalizing the initialization with a lead-in area and a lead-out area including control information;
the initialization is followed by back-ground formatting when no user data is written to the medium, the back-ground formatting including a de-icing, including recording dummy data in blank areas within the data area, said de-icing performed until the complete data area has been recorded with dummy data when not recorded a ready with user data;
and
a finalization after the de-icing has been completed, the finalization including:
completing recording of the lead-in and lead-out area, recording the general application area (GAA) with the required data if needed;
and recording a copy of the main defect table (MDT) as a secondary defect table (SDT) in the general purpose area (GPA).

13 more elements

A computer data system comprising:

a computer;
and
reproducing apparatus for reproducing digital information signals recorded on a removable writable recording medium, the reproducing apparatus connected to the computer and including:
recording medium receiving means for receiving the removable medium;
reading means to read recorded digital information signals recorded on the removable medium;
outputting means for outputting the read digital information signals to the computer;
and
controlling means to control the read means and output means, the control means being connected to the computer;
and wherein the computer controls the controlling means of the reproducing apparatus to perform defect management using the temporary defect table (TDT) obtained according to method of:
performing an initialization after inserting a blank medium into a recording apparatus, the initialization including recording control data in the lead-in area, which control data defines a general purpose area (GPA) within a program area or the medium and whereafter the medium is ready to record user data in a remaining data area of the program area;
recording user data within a program area of the medium;
prior to removal of the medium but of a recording apparatus, finalizing the initialization with a lead-in area and a lead-out area including control information;
the initialization is followed by background formatting when no user data is written to the medium, the back-ground formatting including a de-icing including recording dummy data in blank areas within the data area, said de-icing performed until the complete data area has been recorded with dummy data when not recorded already with user data;
a finalization after the de-icing has been completed, the finalization including:
completing recording of the lead-in and lead-out area, recording the general application area (GAA) with the required data if needed;
and recording a copy of the main defect table (MDT) as a secondary defect table (SDT) in the general purpose-area (GPA);
and
an early-eject performed when the medium is ejected from a recorder prior to completion of the finalization, the early-eject including:
completing recording or reading requests;
stopping an active de-icing and performing only a de-icing to de-ice all blank area up to the last recorded area with user data;
recording a temporary general purpose area next to area with the last recorded user data or to the last de-iced area;
copying replacement areas actually in use within the defect management area (DMA) to the area immediately followed by the temporary general application area;
copying and adapted copy of the main defect table as a temporary defect table next to the copied replacement areas and recording a temporary lead-out area next to the temporary defect table;
and
recording the lead-in area.

22 more elements

Dependencies are inferred from the claim text.

Facts

Application

09/668,542Filed 25 Sep 2000

Priority

EP 9920311123 Sep 1999

Granted

12 Aug 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G11B 20/1217
Formatting, e.g. arrangement of data block or words on the record carriers: on discs
G11B 20/1883
Error detection or correction; Testing , e.g. of drop-outs: methods for assignment of alternate areas for defective areas
G11B 2020/10861
Digital recording or reproducing: finalising a record carrier after a recording operation, e.g. to ensure compatibility with a ROM medium
G11B 2020/1288
Wherein the formatting concerns a specific kind of data: formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data…

Abstract

Claims25

Dependent claims

A method of recording digital information signals on a removable writable recording medium, the method comprising:

recording user data within a program area of a medium;
prior to removal of the medium out of a recording apparatus, finalizing the initialization with a lead-in area and a lead-out area including control information;
and
performing an initialization after inserting a blank medium into the recording apparatus, the initialization including recording control data in the lead-in area, which control data defines a general purpose area (GPA) within a program area of the medium and where after the medium is ready to record user data in a remaining data area of the program area.

1 more element

A computer data system comprising:

a computer;
and
a reproducing apparatus for reproducing digital information signals recorded on a removable writable recording medium, the reproducing apparatus being connected to the computer and including:
recording medium receiving means for receiving the removable medium;
reading means to read recorded digital information signals recorded on the removable medium;
outputting means for outputting the read digital information signals to the computer;
controlling means to control the read means and output means, the control means being connected to the computer means;
the computer controls the controlling means of the reproducing apparatus to perform defect management using the secondary defect table (SDT) obtained according to method of:
performing an initialization after inserting a blank medium into a recording apparatus, the initialization including recording control data in the lead-in area, which control data defines a general purpose area (GPA) within a program area of the medium and whereafter the medium is ready to record user data in a remaining data area of the program area;
recording user data within a program area of the medium;
prior to removal of the medium out of a recording apparatus, finalizing the initialization with a lead-in area and a lead-out area including control information;
the initialization is followed by back-ground formatting when no user data is written to the medium, the back-ground formatting including a de-icing, including recording dummy data in blank areas within the data area, said de-icing performed until the complete data area has been recorded with dummy data when not recorded a ready with user data;
and
a finalization after the de-icing has been completed, the finalization including:
completing recording of the lead-in and lead-out area, recording the general application area (GAA) with the required data if needed;
and recording a copy of the main defect table (MDT) as a secondary defect table (SDT) in the general purpose area (GPA).

13 more elements

A computer data system comprising:

a computer;
and
reproducing apparatus for reproducing digital information signals recorded on a removable writable recording medium, the reproducing apparatus connected to the computer and including:
recording medium receiving means for receiving the removable medium;
reading means to read recorded digital information signals recorded on the removable medium;
outputting means for outputting the read digital information signals to the computer;
and
controlling means to control the read means and output means, the control means being connected to the computer;
and wherein the computer controls the controlling means of the reproducing apparatus to perform defect management using the temporary defect table (TDT) obtained according to method of:
performing an initialization after inserting a blank medium into a recording apparatus, the initialization including recording control data in the lead-in area, which control data defines a general purpose area (GPA) within a program area or the medium and whereafter the medium is ready to record user data in a remaining data area of the program area;
recording user data within a program area of the medium;
prior to removal of the medium but of a recording apparatus, finalizing the initialization with a lead-in area and a lead-out area including control information;
the initialization is followed by background formatting when no user data is written to the medium, the back-ground formatting including a de-icing including recording dummy data in blank areas within the data area, said de-icing performed until the complete data area has been recorded with dummy data when not recorded already with user data;
a finalization after the de-icing has been completed, the finalization including:
completing recording of the lead-in and lead-out area, recording the general application area (GAA) with the required data if needed;
and recording a copy of the main defect table (MDT) as a secondary defect table (SDT) in the general purpose-area (GPA);
and
an early-eject performed when the medium is ejected from a recorder prior to completion of the finalization, the early-eject including:
completing recording or reading requests;
stopping an active de-icing and performing only a de-icing to de-ice all blank area up to the last recorded area with user data;
recording a temporary general purpose area next to area with the last recorded user data or to the last de-iced area;
copying replacement areas actually in use within the defect management area (DMA) to the area immediately followed by the temporary general application area;
copying and adapted copy of the main defect table as a temporary defect table next to the copied replacement areas and recording a temporary lead-out area next to the temporary defect table;
and
recording the lead-in area.

22 more elements

Dependencies are inferred from the claim text.

Method of immediate writing or reading files on a disc like recording medium

Life of this patent

Abstract

Claims25

Method of immediate writing or reading files on a disc like recording medium

Life of this patent

Abstract

Claims25