US Patent No: 6,295,260

Number of patents in Portfolio can not be more than 2000

Optical disk apparatus and computer with the optical disk apparatus built in

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

The optical disk apparatus of the present invention includes: a light source; an optical disk loader for loading an optical disk thereon; a converging optical system, provided between the optical disk loaded on the optical disk loader and the light source, for converging a light beam, which has been emitted from the light source, on the optical disk; and a type recognizing circuit for generating an optical disk recognition signal including information representing whether the optical disk loaded on the optical disk loader is a writable optical disk or a read-only optical disk. The apparatus further includes an irradiation intensity adjusting mechanism for changing, responsive to the optical disk recognition signal, an irradiation intensity of the light beam on the optical disk.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.OSAKA27275

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shihara, Tetuya Osaka, JP 1 17
Watanabe, Katsuya Nara, JP 198 797

Cited Art

Patent Info (Count) # Cites Year
 
SONY CORPORATION (2)
6,016,301 Optical pickup device and optical disc reproducing apparatus 12 1997
5,745,451 Disc recording and/or reproducing apparatus 30 1997
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
5,831,952 Optical disk thickness discriminating apparatus 27 1996

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
TIAN HOLDINGS, LLC (6)
7,843,786 Discrimination method of optical storage medium 0 2003
7,602,684 Discriminating method of an optical disc device for ascertaining the format of a loaded optical disc 3 2004
7,570,561 Method for determining type of digital versatile discs 4 2005
7,746,745 Method for determining the type of digital versatile disc 0 2005
7,626,907 Method and apparatus for determining type of digital versatile disc 5 2005
7,995,434 Method and apparatus for generating absolute time in pregroove data 0 2008
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (5)
6,501,712 Disc identifying method and device 7 2000
6,940,794 Information recording/reproducing apparatus that determines the number of recording layers of an information recording medium 7 2002
7,046,606 Optical disc drive 3 2002
7,088,662 Optical disc drive and method for controlling the same 1 2003
7,345,961 Information medium apparatus and information medium starting method 1 2004
 
SONY CORPORATION (2)
6,985,420 Optically recorded data discrimination apparatus and associated methodology 26 2001
7,417,928 Optically recorded data discrimination apparatus and associated methodology 0 2004
 
CSR TECHNOLOGY INC. (1)
7,492,685 Techniques for detecting a type of optical media and operating a media machine in response 2 2005
 
HITACHI-LG DATA STORAGE, INC. (1)
8,289,822 Optical disc reproducing apparatus for implementing an optical recording and reproducing method for multi-layer optical discs 0 2010
 
MITSUMI ELECTRIC CO., LTD. (1)
6,760,289 Optical disc drive and method of discriminating various types of optical discs 18 1999
 
PANASONIC CORPORATION (1)
7,646,689 Disk discriminating method and disk discriminating apparatus 0 2006

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 25, 2013
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