US Patent No: 6,744,713
Number of patents in Portfolio can not be more than 2000
Recording medium for storing write protection information and write protection method thereof
Stats
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Jun 1, 2004
Issued date -
Jul 5, 2000
filing date -
09/610,695
serial no -
In Force
status
Importance
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Abstract
A recording medium storing a write protection information, and a write protection method for protecting data recorded on a recordable and/or rewritable disc from unwanted overwriting or erasing. In order for write protection of a disc in a bare state that is usually used in a cartridge having a recognition switch for write-protection, such as a DVD-RAM, write protection information is recorded in a Lead-in area, a Lead-out area or a recording information area other than a user data area of the disc, and the data is protected from unwanted overwriting or erasing using the write protection information. Also, even though the write protection information stored on a disc does not match the state of a recognition switch of a case for write-protection, the data can be prevented from unwanted overwriting or erasing. Thus, the write protection can be ensured when a recordable and/or rewritable recording medium, such as DVD-RAM, DVD-R and DVD-RW, is used in a bare state.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,737,290 Recording medium capable of recording a first data-type and a second data-type, playback method and playback device for playing back from the recording medium, and recording device for recording first-type data and second-type data on the recording medium | 45 | 1995 | |
| 5,694,381 Information data reproducing system, reproducing apparatus, reproducing method, data forming apparatus, and data record medium | 107 | 1996 | |
| 6,072,759 Recording medium with format for preventing unauthorized copying, and reproducing apparatus for same | 142 | 1997 | |
| 5,905,709 Mass production of multisession discs for playback on audio-only and CD-ROM players | 18 | 1997 | |
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| 5,757,764 Disc cartridge having a write protect operating portion disposed within the cartridge body | 25 | 1996 | |
| 6,490,683 Optical disk having electronic watermark, reproducing apparatus thereof and copy protecting method using the same | 110 | 1998 | |
| 6,385,389 Information recording medium, method for recording information, and method for reproduction information | 127 | 1999 | |
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| 5,761,301 Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk | 160 | 1995 | |
| 6,088,507 Multimedia optical disc for storing audio data and sub-picture data in a plurality of channels as well as moving picture data and apparatus and method for reproducing the multimedia optical disc | 232 | 1997 | |
| 6,078,727 Optical disc, recording apparatus, and computer-readable recording medium | 326 | 1998 | |
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| 5,535,188 Data security protection for information recorded on a rewritable storage medium using a write-once read-many storage medium | 70 | 1994 | |
| 6,034,931 Method of recording media data on a storage medium and method and system for accessing the media data recorded on the storage medium | 23 | 1997 | |
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| 6,288,989 Information recording method with protection function of previously recorded information | 32 | 1996 | |
| 6,343,180 Apparatus and method for producing reproduction time of an optical disc | 22 | 1997 | |
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| 5,404,357 Information writing and reading apparatus | 184 | 1992 | |
| 5,617,393 Optical disk having an erased-state indicator and optical disk apparatus for reducing frequency of disk erasing operation | 24 | 1994 | |
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| 4,805,061 Self-positioning write protect mechanism for a cartridge | 28 | 1987 | |
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| 6,289,423 Method and apparatus for providing selective write protect regions in a storage medium | 37 | 1997 | |
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| 5,233,576 Multi-function optical disk drive and media | 81 | 1991 | |
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| 6,243,340 Information recording apparatus including system control means for producing managing information for managing data recorded on an information recording medium and preventing designated data from being accessed | 36 | 1998 | |
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| 5,654,950 Method for protecting data recorded on a partial read-only memory (ROM) medium from unauthorized copying | 19 | 1995 | |
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| 5,142,515 Sector slip with address collision recovery for write once recording media | 26 | 1989 | |
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| 5,420,838 Disk recording and reproducing device | 50 | 1993 | |
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| 6,141,702 Model and command set for an AV/C-based disc media player recorder | 98 | 1998 | |
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| 5,315,578 Disc recording medium and data recording method | 20 | 1992 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 1, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |