Disk device, read control method for management information in disk device, and data processing terminal device using that disk device

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• a detecting means for detecting whether or not said disk is fitted;
• a judging means for judging the effectiveness of said management information in said recording or reproduction;
• a memory means capable of storing the finding of the judgment even when power supply is off;
• and
• a control means for selecting the mode of reading said management information from the disk on the basis of information on the finding of the judgment,
• wherein the management information is read out of some of a plurality of recording areas of the disk in advance of a recording or reproducing operation if the fitting of said disk is detected and the stored information on the finding of the judgment indicates effectiveness for the inserted disk when power supply is turned on.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• an insertion/ejection detecting means for detecting insertion or ejection of said disk;
• a memory means capable of storing the result of the detection of insertion or ejection even when power supply is off;
• and
• a control means for selecting the mode of reading said management information on the basis of the stored information on the result of the detection of insertion or ejection,
• wherein the management information is read out of some of the recording areas of the disk in advance of a recording or reproducing operation if neither insertion nor ejection of said disk is detected.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• a detecting means for detecting whether or not said disk is fitted;
• a judging means for judging the effectiveness of said management information in said recording or reproduction;
• an insertion/ejection detecting means for detecting insertion or ejection of said disk;
• a memory means capable of storing the result of the detection of insertion or ejection and said finding of the judgment even when power supply is off;
• and
• a control means for selecting the mode of reading said management information on the basis of the stored information on the result of the detection of insertion or ejection and said finding of the judgment,
• wherein the management information is read out of some of the recording areas of the disk in advance of a recording or reproducing operation if the fitting of said disk is detected, said stored finding of the judgment indicates effectiveness for the inserted disk and neither insertion nor ejection of said disk is detected when power supply is turned on.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• a detecting means for detecting whether or not said disk is fitted;
• a judging means for judging the effectiveness of said management information in said recording or reproduction with respect to management information recorded over a plurality of recording areas of the disk;
• a memory means capable of storing the finding of the judgment even when power supply is off;
• and
• a control means for selecting the mode of reading said management information from the disk on the basis of the stored information on the finding of the judgment,
• wherein if the fitting of said disk is detected and the stored information on the finding of the judgment indicates effectiveness for the inserted disk when power supply is turned on, the management information is read out of that area indicated to be effective and a recording or reproducing operation is started.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• a detecting means, operating on a first power source, for detecting whether or not said disk is fitted;
• a judging means, operating on the first power source, for judging the effectiveness of said management information in said recording or reproduction;
• a memory means, operating on a second power source, for storing the finding of the judgment;
• and
• a control means, operating on the first power source, for selecting the mode of reading said management information on the basis of said stored information on the finding of the judgment,
• wherein when said first power source is turned on, if the fitting of said disk is detected and said stored information on the finding of the judgment indicates effectiveness for the inserted disk, effective management information is read out of either a first area or a second area of the disk or, if it indicates ineffectiveness, the management information is read out of both the first area and the second area.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• a detecting means for detecting whether or not said disk is fitted;
• an insertion/ejection detecting means for detecting insertion or ejection of said disk;
• a memory means capable of storing the result of the detection of insertion or ejection even when power supply is off;
• and
• a control means for selecting the mode of reading said management information on the basis of the stored information on the result of the detection of insertion or ejection,
• wherein effective management information is read out of some of the plurality of recording areas of the disk if the fitting of said disk is detected and neither insertion nor ejection of said disk is detected when power supply is turned on.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• a recording means for recording said management information in first and second areas of said disk;
• a judging means for judging the effectiveness of said management information;
• a memory means capable of storing the finding of the judgment even when power supply is off;
• and
• a control means for selecting the mode of reading said management information from the disk on the basis of the stored information on the finding of the judgment,
• wherein the management information is read out of either of said first and second areas in advance of recording or reproducing said signals if said stored information on the finding of the judgment indicates effectiveness for the inserted disk or, if it indicates ineffectiveness of said management information, the management information is read out of both the first and the second areas.

An information processing terminal device for processing received signals comprising:

• an interface for information transmission;
• an information processing means for processing information;
• a disk device for recording and/or reproducing the processed information onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas;
• and
• a display means,
• said disk device further comprising:
• a judging means for judging the effectiveness of said management information in recording or reproducing said signals;
• a memory means capable of storing the result of the judgment even when power supply is off;
• and
• a control means for reading management information out of some of the recording areas of the disk in advance of said recording or reproducing operation if said stored information on the finding of the judgment indicates effectiveness for the inserted disk.

An information processing terminal device for processing received signals comprising:

• an interface for information transmission;
• an information processing means for processing information;
• a disk device for recording and/or reproducing the processed information onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas;
• and
• a display means,
• said disk device further comprising:
• an insertion/ejection detecting means for detecting insertion or ejection of said disk;
• a memory means capable of storing the result of the detection of insertion or ejection even when power supply is off, and
• a control means for reading management information out of some of the recording areas of the disk if neither insertion nor ejection of said disk is detected.

A method of controlling the reading of management information in a disk device for recording and/or reproducing the processed information onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising the steps of:

• reading said management information in advance of recording or reproducing said signals;
• judging the effectiveness of the read management information;
• storing the finding of the judgment into a memory means capable of storing even when power supply is off;
• determining whether or not the stored information of the finding of the judgment indicates effectiveness for the inserted disk;
• and
• reading management information out of some of the recording areas of the disk if the stored information on the result of the determination indicates effectiveness for the inserted disk.

A method of controlling the reading of management information in a disk device for recording and/or reproducing the processed information onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising the steps of:

• detecting insertion or ejection of said disk;
• storing the result of detection into a memory means capable of storing even when power supply is off;
• and
• reading effective management information out of some of the recording areas of the disk if the stored information on the result of the detection of insertion or ejection indicates neither insertion nor ejection of said disk.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, provided with:

• a judging circuit which judges the effectiveness of said management information in recording or reproducing said signals;
• a memory capable of storing the finding of the judgment even when power supply is off;
• and
• a control circuit which selects the mode of reading said management information from some of a plurality of recording areas of the disk on the basis of information on the finding of the judgment,
• wherein the management information is read out of some of the recording areas of the disk in advance of a recording or reproducing operation if said stored information on the finding of the judgment indicates effectiveness for the inserted disk.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• a detecting circuit which detects whether or not said disk is fitted;
• a judging circuit which judges the effectiveness of said management information in said recording or reproduction;
• a memory capable of storing the finding of the judgment even when power supply is off;
• and
• a control circuit which selects the mode of reading said management information from the disk on the basis of information on the finding of the judgment,
• wherein the management information is read out of some of a plurality of recording areas of the disk in advance of a recording or reproducing operation if the fitting of said disk is detected and the stored information on the finding of the judgment indicates effectiveness for the inserted disk when power supply is turned on.

A disk device for recording and/or reproducing signals onto or out of a disk on which management information of the same contents is multiply recorded over a plurality of areas, comprising:

• an insertion/ejection detecting circuit which detects insertion or ejection of said disk;
• a memory capable of storing the result of the detection of insertion or ejection even when power supply is off;
• and
• a control circuit which selects the mode of reading said management information on the basis of the stored information on the result of the detection of insertion or ejection,
• wherein the management information is read out of some of the recording areas of the disk in advance of a recording or reproducing operation if neither insertion nor ejection of said disk is detected.