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1. 发明公开

EP1494217A1 OPTICAL INFORMATION DEVICE, OPTICAL STORAGE MEDIUM, OPTICAL STORAGE MEDIUM INSPECTION DEVICE, AND OPTICAL STORAGE INSPECTION METHOD 有权
标题翻译：光信息装置，光存储设备，检查设备的光学存储媒体和分析在光存储方法
公开(公告)号：EP1494217A1
公开(公告)日：2005-01-05
申请号：EP03715724.5
申请日：2003-04-02
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： KADOWAKI, Shin-ichi , SHOJI, Mamoru , NAKAMURA, Atsushi , ISHIDA, Takashi
IPC分类号： G11B7/004 , G11B20/14
CPC分类号： G01R31/31709 , G01N21/9506 , G01R31/312 , G11B7/00375 , G11B7/00456 , G11B7/00458 , G11B20/10009 , G11B20/10027 , G11B20/10055 , G11B20/10111 , G11B20/10296 , G11B20/10481 , G11B20/1217 , G11B20/1426 , G11B20/225 , G11B2020/1239 , G11B2020/1274 , G11B2020/1298 , G11B2220/2537
摘要： This optical disc drive has an optical pickup head that emits a light beam to an optical storage medium, detects the light beam reflected from the optical storage medium, and outputs a signal based on the received reflected light; a jitter measuring unit for measuring jitter in signals output from the optical pickup head; and an evaluation unit for determining from the measured jitter if the optical storage medium is good or defective. The jitter measuring unit measures jitter in a train of 3T or longer marks or spaces from an optical storage medium to which digital information is recorded as a train of marks or spaces of length kT based on a period T and an integer k of two or more.

2. 发明公开

EP1304687A1 OPTICAL ELEMENT, OPTICAL HEAD AND OPTICAL INFORMATION PROCESSOR 审中-公开
标题翻译： OPTISCHES ELEMENT，OPTISCHER KOPF UND PROZESSORFÜROPTISCHE INFORMATIONEN
公开(公告)号：EP1304687A1
公开(公告)日：2003-04-23
申请号：EP01941234.5
申请日：2001-06-25
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： YAMAMOTO, Hiroaki , KOMMA, Yoshiaki , KADOWAKI, Shin-ichi , MIZUNO, Sadao
IPC分类号： G11B7/09 , G11B7/135 , G02B5/30 , G02B5/18
CPC分类号： G02B5/1833 , G02B5/1823 , G02B27/4238 , G02B27/4255 , G02B27/4261 , G11B7/0901 , G11B7/0943 , G11B7/123 , G11B7/131 , G11B7/1353 , G11B7/1381
摘要： A light beam reflected by an information medium is split by a diffraction optical system into first diffraction light and second diffraction light, which is not a complex conjugate wave of the first diffraction light, in a predetermined energy distribution ratio. The first diffraction light enters a first photodetector (195) of a photodetector and is used for reading out data information recorded on the information medium, while the second diffraction light enters second and third photodetectors (194, 195) and is used for obtaining a servo error signal. With this optical head device, the area of the first photodetector can be reduced, thus allowing a high-speed reproduction of a data signal. Further, the first photodetector becomes less susceptible to stray light. Moreover, the number of head amplifiers, which are needed for detecting the data signal, decreases, and the S/N ratio improves.
摘要翻译：由信息介质反射的光束以预定的能量分配比例被衍射光学系统分割成不是第一衍射光的复共轭的第一衍射光和第二衍射光。第一衍射光进入光电检测器的第一光电检测器（195），并且用于读出记录在信息介质上的数据信息，而第二衍射光进入第二和第三光电检测器（194,195），并用于获得伺服误差信号。利用该光学头装置，可以减小第一光电检测器的面积，从而允许数据信号的高速再现。此外，第一光电检测器变得不易受杂散光的影响。此外，检测数据信号所需的头放大器的数量减少，并且S / N比提高。

3. 发明公开

EP1170840A1 LASER DRIVE DEVICE, OPTICAL HEAD, AND OPTICAL INFORMATION PROCESSOR 有权
标题翻译： OPTISCHER信息检测员LASERANSTEUERUNGSGORRICHTUNG
公开(公告)号：EP1170840A1
公开(公告)日：2002-01-09
申请号：EP01904328.0
申请日：2001-02-07
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： ITO, Tatsuo , KADOWAKI, Shin-ichi , KAMEI, Tomotada , YAMAMOTO, Hiroaki , KOMMA, Yoshiaki
IPC分类号： H01S5/0683 , G11B7/125
CPC分类号： G11B7/127 , G11B7/126 , G11B2007/0006 , H01S5/042 , H01S5/0683 , H01S5/4025 , H01S5/4087
摘要： To provide a laser driving apparatus which is inexpensive and has high reliability in spite of using a plurality of light sources, since a multi - wavelength light source is required for treating different kinds of optical disks such as CD, DVD or the like. In a two - wavelength LD apparatus including: a semiconductor laser 1a; a semiconductor laser 1b; and a photo detector 2, optical outputs of the semiconductor lasers 1a, 1b are controlled by APC circuits 6a, 6b on the basis of respective voltage values of variable resistors 4a, 4b connected in series to the photo detector 2. Alternatively, in the two - wavelength LD apparatus including: the semiconductor laser 1a; the semiconductor laser 1b; and the photo detector 2, the optical outputs of the semiconductor 1a, 1b are controlled by the APC circuits 6a, 6b on the basis of respective intermediate potentials of variable resistors 4a, 4b connected in parallel with the photo detector 2.
摘要翻译：为了提供廉价且具有高可靠性的激光驱动装置，尽管使用多个光源，但是由于需要多波长光源来处理诸如CD，DVD等的各种光盘。在双波长LD装置中，包括：半导体激光器1a; 半导体激光器1b; 和光检测器2，基于与光电检测器2串联连接的可变电阻器4a，4b的各个电压值，由APC电路6a，6b控制半导体激光器1a，1b的光输出。或者，在两个 - 波长LD装置，包括：半导体激光器1a; 半导体激光器1b; 并且光电检测器2，基于与光电检测器2并联连接的可变电阻器4a，4b的各个中间电位，由APC电路6a，6b控制半导体1a，1b的光输出。

4. 发明授权

EP1552507B1 DISC-SHAPED RECORDING MEDIUM, DISC DRIVING DEVICE AND DISC PRODUCING METHOD 有权
标题翻译：板状的记录媒体的磁盘驱动装置及其驱动方法
公开(公告)号：EP1552507B1
公开(公告)日：2008-06-18
申请号：EP03755281.7
申请日：2003-05-22
申请人： Sony Corporation , MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD , Koninklijke Philips Electronics N.V.
发明人： KOBAYASHI, Shoei , YAMAGAMI, Tamotsu , KADOWAKI, Shin-ichi , ISHIDA, Takashi , SCHEP, Cornelis Marinus , BORG, Hermanus Johannes
IPC分类号： G11B7/007
CPC分类号： G11B7/24038 , G11B7/00736
摘要： With the disc-shaped recording medium, or the disc manufacturing method according to the present invention, for both the single-layer disc and the multi-layer disc, a recording layer L 0 , which is to be the first layer, is at the same distance, along the direction of disc thickness, from the surface of the cover layer CVLs on which falls the laser light. For the multi-layer disc, the second layer L 1 and the following layer(s) are formed at the locations which are closer to the cover layer CVLs than the first layer L 0 . Management information may be recorded by mobbling grooves, each layermay have tert areas, defect information, a replacement area. Thus, it is possible to improve compatibility, reliability and accessibility between a single-layer disc and a multi-layer disc. The spherical aberration for the recording/reproducing light may be controlled with respect to the selected layer.

5. 发明公开

EP1552507A2 DISC-SHAPED RECORDING MEDIUM, DISC DRIVING DEVICE AND DISC PRODUCING METHOD 有权
标题翻译：板状的记录媒体的磁盘驱动装置及其驱动方法
公开(公告)号：EP1552507A2
公开(公告)日：2005-07-13
申请号：EP03755281.7
申请日：2003-05-22
申请人： Sony Corporation , MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , Koninklijke Philips Electronics N.V.
发明人： KOBAYASHI, Shoei , YAMAGAMI, Tamotsu , KADOWAKI, Shin-ichi , ISHIDA, Takashi , SCHEP, Cornelis Marinus , BORG, Hermanus Johannes
IPC分类号： G11B7/007
CPC分类号： G11B7/24038 , G11B7/00736
摘要： With the disc-shaped recording medium, or the disc manufacturing method according to the present invention, for both the single-layer disc and the multi-layer disc, a recording layer L 0 , which is to be the first layer, is at the same distance, along the direction of disc thickness, from the surface of the cover layer CVLs on which falls the laser light. For the multi-layer disc, the second layer L 1 and the following layer(s) are formed at the locations which are closer to the cover layer CVLs than the first layer L 0 . Management information may be recorded by mobbling grooves, each layermay have tert areas, defect information, a replacement area. Thus, it is possible to improve compatibility, reliability and accessibility between a single-layer disc and a multi-layer disc. The spherical aberration for the recording/reproducing light may be controlled with respect to the selected layer.

6. 发明公开

EP1327977A1 OPTICAL RECORD MEDIUM, OPTICAL INFORMATION PROCESSING APPARATUS, AND OPTICAL RECORDING/REPRODUCING METHOD 有权
标题翻译：光记录媒体，光学记录/ WIEDRGABEVORRICHTUNG和光学记录/回放
公开(公告)号：EP1327977A1
公开(公告)日：2003-07-16
申请号：EP01972724.7
申请日：2001-10-09
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： YAMAMOTO, Hiroaki , KADOWAKI, Shin-ichi
IPC分类号： G11B7/24 , G11B7/004
CPC分类号： G11B7/24038 , B82Y10/00 , G11B7/004 , G11B7/00454 , G11B7/00455 , G11B7/1275 , G11B7/1356 , G11B7/252 , G11B7/259 , G11B2007/0013 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716
摘要： A first recording layer and a second recording layer among a plurality of recording layers have a recording film and a reflection control film composed of silver oxide, and the reflection control film is interposed between dielectric films. The reflection control film utilizes heat generated from the recording film by light irradiation, thereby forming a high-reflection region in a portion at a temperature equal to or higher than a threshold temperature for forming a high-reflection region. Thus, an optical loss in the portions other than a recording layer to be recorded/reproduced is reduced, whereby a light efficiency is enhanced.
摘要翻译：第一记录层和记录层上的多个中的第二记录层具有记录膜和氧化银的反射控制由薄膜和反射控制电影的介电膜之间。反射控制由光照射薄膜利用来自记录电影产生的热量，从而在大于阈值温度用于形成高反射区域等于或更高的温度下形成在一个部分上的高反射区域。因此，为了在比要记录的记录层以外的部分的光损耗/再现减小，由此光效率提高。

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