Patents by Inventor Minemasa Ota
Minemasa Ota has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6937556Abstract: 1 An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: GrantFiled: September 17, 2003Date of Patent: August 30, 2005Assignees: Sony Corporation, Pioneer Electronic Corporation, Pioneer Display Products CorporationInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Publication number: 20040062162Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: ApplicationFiled: September 17, 2003Publication date: April 1, 2004Applicants: SONY CORPORATION, Pioneer Electronic Corporation, Pioneer Display Products CorporationInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Patent number: 6646963Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: GrantFiled: September 10, 2002Date of Patent: November 11, 2003Assignees: Sony Corporation, Pioneer Electronic Corporation, Pioneer Display Products CorporationInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Patent number: 6606289Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: GrantFiled: September 10, 2002Date of Patent: August 12, 2003Assignees: Sony Corporation, Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Publication number: 20030021203Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: ApplicationFiled: September 10, 2002Publication date: January 30, 2003Applicant: SONY CORPORATION,Inventors: Yoshiyuki Akiyama, Shinichiro IImura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Publication number: 20030007434Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: ApplicationFiled: September 10, 2002Publication date: January 9, 2003Applicant: SONY CORPORATIONInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Patent number: 6469961Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: GrantFiled: July 2, 2001Date of Patent: October 22, 2002Assignees: Sony Corporation, Pioneer Electronic Corporation, Poineer Video CorporationInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Patent number: 6430133Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: GrantFiled: July 2, 2001Date of Patent: August 6, 2002Assignees: Sony Corporation, Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Publication number: 20010046193Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: ApplicationFiled: July 2, 2001Publication date: November 29, 2001Applicant: SONY CORPORATIONInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshi Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Publication number: 20010038591Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: ApplicationFiled: July 2, 2001Publication date: November 8, 2001Applicant: SONY CORPORATIONInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshi Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Patent number: 6282166Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: GrantFiled: March 23, 2000Date of Patent: August 28, 2001Inventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Patent number: 6075761Abstract: An optical recording medium for accurately deriving the address information or the disc rotation control information despite narrow track pitch and for recording signals to a high density, and a method and apparatus for recording and/or reproducing such optical recording medium. The optical recording medium has a wobbled groove and pits formed at a pre-set interval in an area between turns of the wobbled groove. The recording/reproducing method includes controlling rotation of the optical recording medium by a wobbled signal from the groove and detecting the position on the optical recording medium of a recording signal by pit signals detected from the pits. The recording/reproducing apparatus includes a detection device for detecting the wobbled signal from the groove and a detection device for detecting pit signals from the pits.Type: GrantFiled: April 2, 1997Date of Patent: June 13, 2000Assignees: Sony Corporation, Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Yoshiyuki Akiyama, Shinichiro Iimura, Hiroshi Ogawa, Kazuo Kuroda, Toshio Suzuki, Akiyoshi Inoue, Shouji Taniguchi, Minemasa Ota
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Patent number: 4732844Abstract: A method for manufacturing an optical disk having both address pits and guide grooves having accurately controlled depths and widths. Two different types of sensitive materials of different characteristics are applied to a recording original board to form inner and outer layers thereon. The inner and outer layers are exposed and partially removed independently of each other so that the depth and width of the guide grooves and address pits can be set to desired values with high accuracy.Type: GrantFiled: February 13, 1985Date of Patent: March 22, 1988Assignee: Pioneer Electronic CorporationInventors: Minemasa Ota, Osamu Kumasaka
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Patent number: 4680745Abstract: An apparatus for recording pits and grooves on the surface of a recording medium such as an optical disk in which the pits and grooves are formed by separate light sources, thereby providing accurate control over the dimensions of both the pits and grooves. Light beams of separate wavelengths suitable for forming the pits and grooves are passed through respective optical modulators and continuously variable beam expanders, and then combined and applied through a focusing lens to the recording medium. A beam monitor and a focus monitor receive part of the light reflected from the surface of the disk to control the focus and beam size conditions.Type: GrantFiled: February 13, 1985Date of Patent: July 14, 1987Assignee: Pioneer Electronic CorporationInventors: Minemasa Ota, Osamu Matsumoto, Hiroyuki Ohira