| Patent Number |
Title Of Patent |
Date Issued |
| RE39163 |
Recording defect substitution method for a disc-shaped recording medium, and a recording and rep |
July 11, 2006 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium (8), whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discriminati |
| RE38706 |
Recording defect substitution method of a disc-shaped recording medium, and a recording and repr |
February 22, 2005 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium (8), whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination |
| RE38611 |
Method for substituting defective recording of discoid recording medium and discoid recording me |
October 5, 2004 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium, whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination i |
| RE37185 |
Optical head |
May 22, 2001 |
| In an optical disc recording-reproducing apparatus using a standard optical disc enclosed in a cartridge, and optical plate for correcting various aberrations generated by a focusing lens is comprised therein in order to allow use of a double recording optical disc enclosed in the standa |
| 6985427 |
Multi-layered optical disk and method of detecting a track |
January 10, 2006 |
| A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each ha |
| 6958971 |
Method of retrieving information with layer identification data from a multi-layered optical dis |
October 25, 2005 |
| A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light bean is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each ha |
| 6728195 |
Multi-layered optical disk with shifted track and layer identification and method of detecting a |
April 27, 2004 |
| A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each ha |
| 6683834 |
Information recording method, information recording/reproducing apparatus, and information recor |
January 27, 2004 |
| An information recording method has; a history determination step for determining whether or not a medium being cased and capable of being used for information recording and reproduction has previously been taken out from the case by using an identification section having historical i |
| 6606294 |
Optical disk having read-only and rewritable areas |
August 12, 2003 |
| The optical disk of this invention includes a read-only area in which a plurality of read-only tracks are formed and a rewritable area in which a plurality of rewritable tracks are formed, wherein each of the plurality of read-only tracks is divided into a plurality of first sectors, a s |
| 6587414 |
Information recording method, information recording/reproducing apparatus, and information recor |
July 1, 2003 |
| An information recording method has; a history determination step for determining whether or not a medium being cased and capable of being used for information recording and reproduction has previously been taken out from the case by using an identification section having historical i |
| 6560187 |
Information recording method, information recording/reproducing apparatus, and information recor |
May 6, 2003 |
| An information recording method has; a history determination step for determining whether or not a medium being cased and capable of being used for information recording and reproduction has previously been taken out from the case by using an identification section having historical i |
| 6549499 |
Recording defect substitution method for a disc-shaped recording medium, and a recording and rep |
April 15, 2003 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium, whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination i |
| 6496455 |
Recording defect substitution method for a disc-shaped recording medium, and a recording and rep |
December 17, 2002 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium, whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination i |
| 6452884 |
Information recording method, information recording/reproducing apparatus, and information recor |
September 17, 2002 |
| An information recording method has;a history determination stop for determining whether or not a medium being cased and capable of being used for information recording and reproduction has previously been taken out from the case by using an identification section having historical infor |
| 6430129 |
Information recording method, information recording/reproducing apparatus, and information recor |
August 6, 2002 |
| An information recording method has; a history determination step for determining whether or not a medium being cased and capable of being used for information recording and reproduction has previously been taken out from the case by using an identification section having historical |
| 6421315 |
Multi-layered optical disk with shifted track and layer identification and method of detecting a |
July 16, 2002 |
| A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each ha |
| 6418111 |
Optical disk compatible with read-only disk and having read-only and rewritable areas with overl |
July 9, 2002 |
| The optical disk of this invention includes a read-only area in which a plurality of read-only tracks are formed and a rewritable area in which a plurality of rewritable tracks are formed, wherein each of the plurality of read-only tracks is divided into a plurality of first sectors, a s |
| 6396798 |
Optical disc with a rewritable area and a read-only area |
May 28, 2002 |
| An optical disc having both rewritable area and read-only area is disclosed. The rewritable area has a single spiral pattern of start track land at a leading edge, and a single spiral pattern of end track land at a trailing edge, whereby portions of the physical address area PID deviated |
| 6373815 |
Optical disc having oscillating lands and grooves |
April 16, 2002 |
| In an optical disc, an ID field contains a plurality of address information, and is preliminarily recorded in convex and concave signals, and is composed of two sets offset by about 1/2 track pitch toward the internal or external track direction adjacent to the guide track, an inform |
| 6317407 |
Optical disk having read-only and rewritable areas with overlapping formats |
November 13, 2001 |
| The optical disk of this invention includes a read-only area in which a plurality of read-only tracks are formed and a rewritable area in which a plurality of rewritable tracks are formed, wherein each of the plurality of read-only tracks is divided into a plurality of first sectors, a s |
| 6314078 |
Recording defect substitution method for a disc-shaped recording medium, and a recording and rep |
November 6, 2001 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium (8), whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination |
| 6301220 |
Recording defect substitution method for a disc-shaped recording medium, and a recording and rep |
October 9, 2001 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium (8), whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination |
| 6175549 |
Recording defect substitution method of a disc-shaped recording medium, and a recording and repr |
January 16, 2001 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium (8), whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination |
| 6167022 |
Optical disc having oscillating land and grooves |
December 26, 2000 |
| One or more optical discs, each having a ROM field having information with a length of at least one track formed in convex and concave pit rows, and a rewritable field capable of rewriting the information with a length of at least one track, an information unrecorded field having a lengt |
| 6160770 |
Information recording method, information recording/reproducing apparatus, and information recor |
December 12, 2000 |
| An information recording method has;a history determination step for determining whether or not a medium being cased and capable of being used for information recording and reproduction has previously been taken out from the case by using an identification section having historical infor |
| 6137768 |
Optical disc having oscillating lands and grooves |
October 24, 2000 |
| In an optical disc, an ID field contains a plurality of address information, and is preliminarily recorded in convex and concave signals, and is composed of two sets offset by about 1/2 track pitch toward the internal or external track direction adjacent to the guide track, an inform |
| 6134214 |
Method for substituting defective recording of discoid recording medium and discoid recording me |
October 17, 2000 |
| In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium, whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination i |
| 6097683 |
Information recording/reproducing apparatus and a method of recording information onto an inform |
August 1, 2000 |
| An information recording/reproducing apparatus and a method of recording data onto an information recording/reproducing media. The information recording/reproducing apparatus has the capability of handling the information recording/reproducing media both when they are not in the case |
| 6078559 |
Optical disk having read-only and rewritable areas with overlapping formats |
June 20, 2000 |
| An optical disk includes a read-only area in which a plurality of read-only tracks are formed and a rewritable area in which a plurality of rewritable tracks are formed, wherein each of the plurality of read-only tracks is divided into a plurality of first sectors, a signal is prerecorde |
| 6038209 |
Optical disk, and information recording/reproduction apparatus |
March 14, 2000 |
| In an optical disk having a recording plane having a spiral first track and a spiral second track, information being to be recorded into and/or reproduced from said first and second tracks, the first track is formed into a groove-like shape, the second track is formed between adjacent th |
| 6021101 |
Optical disk, and information recording/reproduction apparatus |
February 1, 2000 |
| In an optical disk having a recording plane having a spiral first track and a spiral second track, information being to be recorded into and/or reproduced from said first and second tracks, the first track is formed into a groove-like shape, the second track is formed between adjacent th |
| 5933410 |
Optical disc and optical disc driving apparatus |
August 3, 1999 |
| An optical disc using a single-spiral land and groove track format enabling accurate tracking offset correction and reliable detection of the transition point between a land track and a groove track, and a driving apparatus therefor. Four physical address areas PID1, PID2, PID3, and PID4 |
| 5923640 |
Optical disc with a rewritable area and a read-only area |
July 13, 1999 |
| An optical disc having both rewritable area and read-only area is disclosed. The rewritable area has a single spiral pattern of start track land at a leading edge, and a single spiral pattern of end track land at a trailing edge, whereby portions of the physical address area PID deviated |
| 5920540 |
Optical disk having address information in lands and grooves, and an information recording/repro |
July 6, 1999 |
| In an optical disk having a recording plane having a spiral first track and a spiral second track, information being to be recorded into and/or reproduced from said first and second tracks, the first track is formed into a groove-like shape, the second track is formed between adjacent th |
| 5883878 |
Method of manufacturing a multilayered optical disc |
March 16, 1999 |
| A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each ha |
| 5872767 |
Optical disk and an optical disk recording/reproduction device having address blocks located on |
February 16, 1999 |
| An optical disk according to the present invention includes a first track having a spiral shape and a second track having a spiral shape, the first track and the second track adjoining each other, and information being recorded on or reproduced from the first track and the second track. |
| 5872750 |
Optical disk, and information recording/reproduction apparatus |
February 16, 1999 |
| In an optical disk having a recording plane having a spiral first track and a spiral second track, information being to be recorded into and/or reproduced from said first and second tracks, the first track is formed into a groove-like shape, the second track is formed between adjacent th |
| 5870374 |
Multi-layer optical disc having a pair of substrates spaced by an adhesive material |
February 9, 1999 |
| A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each ha |
| 5862112 |
Optical disk and an optical disk recording reproduction device |
January 19, 1999 |
| An optical disk according to the present invention includes a first track having a spiral shape and a second track having a spiral shape, the first track and the second track adjoining each other, and information being recorded on or reproduced from the first track and the second track. |
| 5850382 |
Optical disk having a rewritable area and a read-only area |
December 15, 1998 |
| An optical disk is provided which includes a rewritable first recording area and a read-only second recording area. The first recording area includes groove tracks and land tracks divided into first sectors. Each first sector has a header region with identification data and a data re |
| 5838658 |
Optical disc |
November 17, 1998 |
| An optical disc using a single-spiral land and groove track format and an address signal enabling simple sector address management and format compatibility with read-only optical disc media is disclosed. Four physical address areas PID1-PID4 are recorded to a header area such that PI |
| 5764620 |
Multi-layered optical disk with shifted track and layer identification and method of detecting a |
June 9, 1998 |
| A multi-layered optical disk comprising a plurality of recording layers accumulated in the thickness direction wherein a light beam is focused on one of tracks of one of the layers thereby to record and reproduce data, the optical disk being characterized in that recording layers each ha |
| 5648954 |
Optical disk using land and groove tracks |
July 15, 1997 |
| In an optical disk comprising a recording plane having a spiral first track and a spiral second track, information being to be recorded into and/or reproduced from the first and second tracks, the first track is formed into a groove-like shape, the second track is formed between adjacent |
| 5566350 |
Information device for providing fast data transfer with minimum overhead |
October 15, 1996 |
| An information device which ensures fast data transfer between a RAM and an I/O channel, between an I/O channel and another I/O channel, or between a RAM and another RAM: comprises address decoder circuit which allows the CPU to gain simultaneous access to both the RAM and the I/O channe |
| 5541900 |
Optical information recording and reproducing apparatus and method for different spot size type |
July 30, 1996 |
| Optical information recording and reproducing apparatus and method of the invention perform the recording and reproducing for various types of information recording media each having a converged laser spot size different from the spot sizes of the other types. The optical information |
| 5517484 |
Optical disk and optical disk recording and reproducing apparatus |
May 14, 1996 |
| A reproduction type optical disk having same sector structure as that of a recordable optical disk, can reproduce data even if a plurality of sectors are disabled from correction. The disk has data sectors for recording data, parity sectors obtained by a new error correction coding betwe |
| 5513160 |
Optical disc and contamination detection system in an apparatus for recording and reproducing th |
April 30, 1996 |
| An inspection sector area is disposed on each data sector area of the recording area of an optical disc, and predetermined reference inspection data is recorded in the inspection sector area of a new optical disc before use. The recorded inspection data is reproduced and the number (Ej) |
| 5485439 |
Method for recording/reproducing information and apparatus therefor |
January 16, 1996 |
| A method and apparatus for recording/reproducing information on an optical disk using the UNIX operating system. The optical disk has a plurality of partitions. An open table is provided to prevent the removal of the optical disk when the optical disk device is in use. The open table |
| 5469418 |
Optical information write/read device and method for writing data |
November 21, 1995 |
| A write/read device includes two optical heads for writing data on an optical disk. The two heads are moved simultaneously after data is written in a track, the written data is read and checked for writing errors. This write verify is performed by the two optical heads in parallel, and d |
| 5457794 |
Information retrieval apparatus for searching target literature data from an information recordi |
October 10, 1995 |
| The present invention relates to an information retrieval apparatus for retrieving large quantities of the document files stored in the information recording medium by the successive matched comparison between the character string of a target and the character string in the coded doc |
