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71. 发明专利

CA2028544A1 MULTI-LAYERED OPTICAL DISK 未知
公开(公告)号：CA2028544A1
公开(公告)日：1991-05-01
申请号：CA2028544
申请日：1990-10-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SATOH ISAO , FUKUSHIMA YOSHIHISA , TAKAGI YUJI , AZUMATANI YASUSHI , HAMASAKA HIROSHI
IPC分类号： G11B7/00 , G11B7/004 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/24 , G11B7/26
摘要： A method of selectively accessing a desired recording layer on a multi-layered optical disk is described. The multi-layered optical disk comprises a first recording layer (3; 7a) superposed on a first base plate (2), a second recording layer (4; 7c) superposed on a second base plate (2), and a spacer (5) of adhesive disposed between the first recording layer (3; 7a) and the second recording layer (4; 7c). Each recording layer (3, 4; 7a, 7b, 7c) has an identification section (ID a , ID b ). Information is recorded on and/or reproduced from the recording layers (3, 4; 7a, 7b, 7c) by a focused light beam. The method comprises changing the focus of the light beam and detecting zero cross points of respective focusing error signal S curves, each S curve corresponding to a respective recording layer, until the same number of zero cross points as an ordinal number of the desired recording layer is detected. The correct selection of the recording layer (3, 4; 7a, 7b, 7c) is confirmed by reading an identification section (ID a , ID b ) thereof which stores its recording layer address.

72. 发明专利

DE3674174D1 未知
公开(公告)号：DE3674174D1
公开(公告)日：1990-10-18
申请号：DE3674174
申请日：1986-12-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SATOH ISAO , ICHINOSE MAKOTO , FUKUSHIMA YOSHIHISA , KUROKI YUZURU , TAKAGI YUJI
IPC分类号： G11B7/00 , G11B7/0055 , G11B7/30 , G11B20/18 , G11B27/36 , G11B7/013
摘要： An optical recording and reproducing apparatus for recording and reproducing data in an optical disk is disclosed. The optical disk has a plurality of erase test sectors in tracks, in one of which the accumulated number of tests together with test data is written. The data read from the erase test sector is compared with the recorded data to effect an erase function diagnosis. If data comparison shows an non-coincidence or the accumulated number of tests exceeds a predetermined value, a new erase test sector is used. The fatigue of the recording medium caused by a defect of the medium or reduced erasing efficiency due to an increased number of erasures of the recording medium is checked by controlling the accumulated number, completely separately from the fault of erase function of the apparatus, thus improving the reliability of the erase function self-diagnosis. Upon detection of an error in the read data or when the accumulated number of tests exceeds a predetermined value, a marking signal is written in the data field of a defective sector, and the apparatus shift to a new erase test sector not yet marked for subsequent erase function self-diagnosis, thereby making possible erase function self-diagnosis without being affected by the fatigue of the recording medium.

73. 发明专利

DE60129326T2 未知
公开(公告)号：DE60129326T2
公开(公告)日：2007-10-18
申请号：DE60129326
申请日：2001-05-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KANDA YOSHIHIRO , FUKUSHIMA YOSHIHISA , ODAGIRI MASARU
IPC分类号： G11B20/00 , G11B7/007 , G11B19/12 , G11B20/12
摘要： In a recordable data storage medium on which property data was recorded after having been modulated and on which data that is decodable by a cryptographic key to be generated from the property data was recorded, the property data was preferably modulated by a different method from that applied to a read-only data storage medium. Then, an optical disc drive, having no ability to distinguish the recordable data storage medium from the read-only data storage medium, cannot read the recordable data storage medium. Consequently, a greater number of drives should be equipped with the function of recognizing the type of a given data storage medium and the copyright protection function should be consolidated.

74. 发明专利

DE60031835T2 未知
公开(公告)号：DE60031835T2
公开(公告)日：2007-03-01
申请号：DE60031835
申请日：2000-07-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IRIE HIROAKI , HORAI KEIICHIRO , NISHIUCHI KENICHI , FUKUSHIMA YOSHIHISA , OSHIMA MITSUAKI
IPC分类号： G11B7/007 , G11B7/0045 , G11B7/125 , G11B7/24 , G11B7/26 , G11B19/12 , G11B20/00 , G11B20/12 , G11B20/18
摘要： A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.

75. 发明专利

DE60031835D1 未知
公开(公告)号：DE60031835D1
公开(公告)日：2006-12-28
申请号：DE60031835
申请日：2000-07-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IRIE HIROAKI , HORAI KEIICHIRO , NISHIUCHI KENICHI , FUKUSHIMA YOSHIHISA , OSHIMA MITSUAKI
IPC分类号： G11B7/007 , G11B7/0045 , G11B7/125 , G11B7/24 , G11B7/26 , G11B19/12 , G11B20/00 , G11B20/12 , G11B20/18
摘要： A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.

76. 发明专利

DE60021037T2 未知
公开(公告)号：DE60021037T2
公开(公告)日：2006-05-04
申请号：DE60021037
申请日：2000-10-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： GOTOH YOSHIHO , UEDA HIROSHI , SASAKI MIYUKI , FUKUSHIMA YOSHIHISA
IPC分类号： G11B20/12 , G11B20/10 , G11B27/034 , G11B27/10 , G11B27/30 , G11B27/32 , H04N5/775 , H04N5/85 , H04N9/804
摘要： An information recording medium for recording a real-time file containing real-time data in such a manner that the real-time data is continuously reproducible by a playback reference model, the real-time data including at least one of video data and audio data. The playback reference model includes: a pickup for reading the real-time data from the information recording medium; a buffer memory for temporarily storing the real-time data read by the pickup; and a decoder module for reading the real-time data from the buffer memory for processing. The information recording medium includes a volume space for at least recording in sectors a file containing data and file management information for managing the file. The real-time data is recorded in at least two real-time extents each of which is allocated in logically contiguous sectors within the volume space. An (i+1) th real-time extent among the at least two real-time extents is positioned at a position satisfying a real-time reproduction condition.

77. 发明专利

MY120755A A METHOD AND AN APPARATUS FOR INTERLEAVING BITSTREAM TO RECORD THEREOF ON A RECORDING MEDIUM, AND REPRODUCING THE INTERLEAVED BITSTREAM THEREFROM 未知
公开(公告)号：MY120755A
公开(公告)日：2005-11-30
申请号：MYPI9803643
申请日：1996-09-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMANE YASUHIKO , HASEBE TAKUMI , TSUGA KAZUHIRO , MORI YOSHIHIRO , NAKAMURA KAZUHIKO , FUKUSHIMA YOSHIHISA , KOZUKA MASAYUKI , MATSUDA CHIEKO , AZUMATANI YASUSHI
IPC分类号： H04N9/804 , G11B20/00 , G11B20/10 , G11B20/12 , G11B27/034 , G11B27/10 , G11B27/30 , G11B27/32 , H04N5/85 , H04N9/806 , H04N9/82 , H04N9/877 , H04N19/00 , H04N19/423 , H04N19/48 , H04N19/65 , H04N19/70 , H04N19/91
摘要： AN INTERLEAVING METHOD FOR GENERATING A BITSTREAM FROM PLURAL VIDEO OBJECTS CONTAINING COMPRESSED VIDEO DATA BY ARRANGING IN THE PRESENTATION ORDER, WHEREIN INTERLEAVED DATA BLOCKS IN WHICH PLURAL VIDEO OBJECTS ARE CONTIGUOUSLY ARRAYED USING INTERLEAVED UNITS EACH LONGER THAN THE SHORTEST READ TIME ILVUMT SUCH THAT THE VIDEO OBJECT PRESENTATION START AND END POINTS ARE ALIGNED. THE RATIO BETWEEN THE PRESENTATION TIMES OF VIDEO OBJECTS WITH THE SHORTEST PRESENTATION TIME AND VIDEO OBJECTS OTHER THAN THOSE WITH THE SHORTEST PRESENTATION TIME IS WITHIN A RANGE OBTAINED FROM THE SHORTEST READ TIME ILVUMT, THE MAXIMUM JUMPABLE DISTANCE JM, AND THE SMALLEST CONTROL UNIT. CONTIGUOUS DATA BLOCKS WHEREIN THE PRESENTATION START POINTS AND END POINTS OF THE VIDEO OBJECTS ARRAYED THEREIN ARE NOT ALIGNED.

78. 发明专利

DE60021037D1 未知
公开(公告)号：DE60021037D1
公开(公告)日：2005-08-04
申请号：DE60021037
申请日：2000-10-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： GOTOH YOSHIHO , UEDA HIROSHI , SASAKI MIYUKI , FUKUSHIMA YOSHIHISA
IPC分类号： G11B20/10 , G11B20/12 , G11B27/034 , G11B27/10 , G11B27/30 , G11B27/32 , H04N5/775 , H04N5/85 , H04N9/804
摘要： An information recording medium for recording a real-time file containing real-time data in such a manner that the real-time data is continuously reproducible by a playback reference model, the real-time data including at least one of video data and audio data. The playback reference model includes: a pickup for reading the real-time data from the information recording medium; a buffer memory for temporarily storing the real-time data read by the pickup; and a decoder module for reading the real-time data from the buffer memory for processing. The information recording medium includes a volume space for at least recording in sectors a file containing data and file management information for managing the file. The real-time data is recorded in at least two real-time extents each of which is allocated in logically contiguous sectors within the volume space. An (i+1) th real-time extent among the at least two real-time extents is positioned at a position satisfying a real-time reproduction condition.

79. 发明专利

DE69634850D1 未知
公开(公告)号：DE69634850D1
公开(公告)日：2005-07-21
申请号：DE69634850
申请日：1996-10-04
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： UEDA HIROSHI , FUKUSHIMA YOSHIHISA , ITO MOTOSHI , TATEBAYASHI MAKOTO , MATSUZAKI NATSUME
IPC分类号： G06F1/00 , G11B19/02 , G11B19/04 , G11B19/12 , G11B20/00 , G11B20/12 , G11B27/034 , G11B27/10 , H04N5/85 , H04N5/913 , H04N9/804 , G11B19/00
摘要： An information recording medium includes a lead-in area and a data recording area. Key information is recorded in the lead-in area. Scrambled data is recorded in the data recording area. The scrambled data is descrambled based on the key information.

80. 发明专利

DE69034169T2 未知
公开(公告)号：DE69034169T2
公开(公告)日：2005-02-17
申请号：DE69034169
申请日：1990-10-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SATOH ISAO , FUKUSHIMA YOSHIHISA , TAKAGI YUJI , AZUMATANI YASUSHI , HAMASAKA HIROSHI
IPC分类号： G11B7/00 , G11B7/004 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/24 , G11B7/26 , G06K9/22 , G01L9/00
摘要： A method of selectively accessing a desired recording layer on a multi-layered optical disk is described. The multi-layered optical disk comprises a first recording layer (3; 7a) superposed on a first base plate (2), a second recording layer (4; 7c) superposed on a second base plate (2), and a spacer (5) of adhesive disposed between the first recording layer (3; 7a) and the second recording layer (4; 7c). Each recording layer (3, 4; 7a, 7b, 7c) has an identification section (ID a , ID b ). Information is recorded on and/or reproduced from the recording layers (3, 4; 7a, 7b, 7c) by a focused light beam. The method comprises changing the focus of the light beam and detecting zero cross points of respective focusing error signal S curves, each S curve corresponding to a respective recording layer, until the same number of zero cross points as an ordinal number of the desired recording layer is detected. The correct selection of the recording layer (3, 4; 7a, 7b, 7c) is confirmed by reading an identification section (ID a , ID b ) thereof which stores its recording layer address.

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