Patents by Inventor Shigeru Shimonou
Shigeru Shimonou 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: 7643394Abstract: In an optical disk recording method of recording data onto a recordable optical disk which includes a data zone where data is recorded and a management data zone where management data indicating the recorded part of the data zone is recorded, an extended management data zone in which the management data is to be recorded is set in the data zone in response to an extension instruction.Type: GrantFiled: June 13, 2005Date of Patent: January 5, 2010Assignees: Kabushiki Kaisha Toshiba, NEC Corporation, Sanyo Electric Co., Ltd.Inventors: Yutaka Kashihara, Hideki Takahashi, Akihito Ogawa, Yutaka Yamanaka, Shigeru Shimonou, Tatsunori Ide, Tsuyoshi Yamamoto, Katsuki Hattori, Masato Fuma
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Patent number: 7551530Abstract: An optical disc recording system includes a host apparatus configured to issue commands; and an optical disc recording apparatus configured to carry out a process corresponding to each of the commands, and to reply a response data to the command to the host apparatus. The host apparatus issues a record command as one of the commands to record a record data in an optical disc medium, and an optical disc recording apparatus records the record data in a data area in a predetermined format in response to the record command, wherein the optical disc comprises the data area and a first control data recording area. The optical disc recording apparatus additionally sets each of second control data recording areas in the data area in association with a command from the host apparatus as one of the commands, and a record status control data is recorded in the first or second control data recording area to indicate record status of the record data.Type: GrantFiled: May 25, 2005Date of Patent: June 23, 2009Assignee: NEC CorporationInventors: Naoto Yamamoto, Shigeru Shimonou, Masatsugu Ogawa
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Publication number: 20090059747Abstract: [PROBLEMS] To reduce the number of recording condition adjustment steps before information recording, simplify the recording condition adjustment procedure, and perform stable and accurate recoding condition adjustment of an information recording medium. [MEANS FOR SOLVING PROBLEMS] When recording information on a recording medium, the recording condition is optimized. Next, under the optimized recording condition, a signal is recorded in a prescribed area of the information recording medium. Next, by using the signal recorded under the optimized recording condition, a part of the recording condition for the next and later is adjusted. Thus, a part of the recording condition is adjusted by using the signal recorded under the optimized recording condition and accordingly, it is possible to rapidly perform the recording condition adjustment before information recording.Type: ApplicationFiled: March 14, 2006Publication date: March 5, 2009Applicant: NEC CorporationInventors: Masaki Nakano, Masatsugu Ogawa, Shigeru Shimonou
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Patent number: 7492697Abstract: Data is recorded on an optical disc using a combination of a user data area where user data is recorded, a control data area for reproduction provided on an inner radius side of the user data area, and an outer guard zone provided on an outer radius side of the user data area as a unit of one recording operation. In this configuration, a track pitch TP of the optical disc is greater than or equal to 0.3 ?m and smaller than or equal to 0.4 ?m, and the width of the outer guard zone along a radius direction of the optical disc is greater than or equal to a value of (100×TP) and smaller than or equal to a value of (125×TP).Type: GrantFiled: June 1, 2005Date of Patent: February 17, 2009Assignees: Sanyo Electric Co., Ltd., NEC CorporationInventors: Tsuyoshi Yamamoto, Katsuki Hattori, Masato Fuma, Yutaka Yamanaka, Tatsunori Ide, Shigeru Shimonou, Yutaka Kashihara, Akihito Ogawa, Hideki Takahashi
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Patent number: 7471617Abstract: An optical disc medium includes a system area and a data area following the system area. A plurality of sets of an extended record control data area, a bordered area, and a border are possibly set in the data area continuously from the system area, and a first set of the plurality of sets does not include the extended record control data area. A user data is recorded in each of the bordered areas. In each of the plurality of sets other than the first set, a record control data associated with the user data which is recorded in the bordered area of the set is recorded in the extended record control data area.Type: GrantFiled: April 22, 2005Date of Patent: December 30, 2008Assignees: NEC Corporation, Kabushiki Kaisha ToshibaInventors: Yutaka Yamanaka, Shigeru Shimonou, Tatsunori Ide, Hideki Takahashi, Akihito Ogawa, Yutaka Kashihara
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Patent number: 7471602Abstract: An optical disk medium in which a learning area can be expanded, an optical disk information recording method and an optical disk apparatus are provided. A first lead-in area and second lead-in area are provided on the inner side and outer side of a data area. The first lead-in area includes a first learning area, management information recording area and data connection area and the second lead-in area includes a protection area which protects the user data in the inner portion thereof and a second learning area which is provided on the outer side of the protection area and sets an optimum condition for an operation of recording data into the data area. An area in which information indicating the utilization state of the protection area is recorded is prepared in one of the management information recording area and data connection area.Type: GrantFiled: May 12, 2005Date of Patent: December 30, 2008Assignees: Kabushiki Kaisha Toshiba, NEC CorporationInventors: Akihito Ogawa, Yutaka Kashihara, Hideki Takahashi, Yutaka Yamanaka, Shigeru Shimonou, Tatsunori Ide
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Publication number: 20080298184Abstract: An optical disc recording system includes a host apparatus configured to issue commands; and an optical disc recording apparatus configured to carry out a process corresponding to each of the commands, and to reply a response data to the command to the host apparatus. The host apparatus issues a record command as one of the commands to record a record data in an optical disc medium, and an optical disc recording apparatus records the record data in a data area in a predetermined format in response to the record command, wherein the optical disc comprises the data area and a first control data recording area. The optical disc recording apparatus additionally sets each of second control data recording areas in the data area in association with a command from the host apparatus as one of the commands, and a record status control data is recorded in the first or second control data recording area to indicate record status of the record data.Type: ApplicationFiled: July 24, 2008Publication date: December 4, 2008Applicant: NEC CORPORATIONInventors: Naoto Yamamoto, Shigeru Shimonou, Masatsugu Ogawa
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Patent number: 7136339Abstract: A positioning control apparatus for controlling a moving member to trace the position of a target member which almost equally repeats the position shift at a predetermined period comprises a position detector for detecting a relative position error, a first adder for adding a delay signal and a position error signal, a signal delay unit for outputting the delay signal which is obtained by delaying an output signal of the first adder at a period corresponding to the position shift of the target member, a second adder for adding the position error signal and the delay signal, a third adder for adding an output of the second adder and the delay signal via a filter, a compensating unit for performing the compensation for offset and/or the compensation for stabilization of the positioning control apparatus based on an output of the third adder, a drive unit for driving the moving member based on an output of the compensating unit, and a delay-amount setting unit for setting the amount of delay of a signal delayedType: GrantFiled: May 29, 2002Date of Patent: November 14, 2006Assignee: NEC CorporationInventors: Masashi Kubota, Shigeru Shimonou, Naotoshi Iwazawa
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Publication number: 20060181981Abstract: An optical disc recording system includes a host apparatus configured to issue commands; and an optical disc recording apparatus configured to carry out a process corresponding to each of the commands, and to reply a response data to the command to the host apparatus. The host apparatus issues a record command as one of the commands to record a record data in an optical disc medium, and an optical disc recording apparatus records the record data in a data area in a predetermined format in response to the record command, wherein the optical disc comprises the data area and a first control data recording area. The optical disc recording apparatus additionally sets each of second control data recording areas in the data area in association with a command from the host apparatus as one of the commands, and a record status control data is recorded in the first or second control data recording area to indicate record status of the record data.Type: ApplicationFiled: May 25, 2005Publication date: August 17, 2006Inventors: Naoto Yamamoto, Shigeru Shimonou, Masatsugu Ogawa
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Publication number: 20050276191Abstract: In an optical disk recording method of recording data onto a recordable optical disk which includes a data zone where data is recorded and a management data zone where management data indicating the recorded part of the data zone is recorded, an extended management data zone in which the management data is to be recorded is set in the data zone in response to an extension instruction.Type: ApplicationFiled: June 13, 2005Publication date: December 15, 2005Inventors: Yutaka Kashihara, Hideki Takahashi, Akihito Ogawa, Yutaka Yamanaka, Shigeru Shimonou, Tatsunori Ide, Tsuyoshi Yamamoto, Katsuki Hattori, Masato Fuma
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Publication number: 20050270966Abstract: Data is recorded on an optical disc using a combination of a user data area where user data is recorded, a control data area for reproduction provided on an inner radius side of the user data area, and an outer guard zone provided on an outer radius side of the user data area as a unit of one recording operation. In this configuration, a track pitch TP of the optical disc is greater than or equal to 0.3 ?m and smaller than or equal to 0.4 ?m, and the width of the outer guard zone along a radius direction of the optical disc is greater than or equal to a value of (100×TP) and smaller than or equal to a value of (125×TP).Type: ApplicationFiled: June 1, 2005Publication date: December 8, 2005Applicants: SANYO ELECTRIC CO., LTD., NEC Corporation, Kabushiki Kaisha ToshibaInventors: Tsuyoshi Yamamoto, Katsuki Hattori, Masato Fuma, Yutaka Yamanaka, Tatsunori Ide, Shigeru Shimonou, Yutaka Kashihara, Akihito Ogawa, Hideki Takahashi
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Publication number: 20050265171Abstract: An optical disc recording system includes a host apparatus configured to issue commands; and an optical disc recording apparatus configured to carry out a process corresponding to each of the commands, and to reply a response data to the command to the host apparatus. The host apparatus issues a record command as one of the commands to record a record data in an optical disc medium, and an optical disc recording apparatus records the record data in a data area in a predetermined format in response to the record command, wherein the optical disc comprises the data area and a first control data recording area. The optical disc recording apparatus additionally sets each of second control data recording areas in the data area in association with a command from the host apparatus as one of the commands, and a record status control data is recorded in the first or second control data recording area to indicate record status of the record data.Type: ApplicationFiled: May 25, 2005Publication date: December 1, 2005Applicant: NEC CorporationInventors: Naoto Yamamoto, Shigeru Shimonou
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Publication number: 20050254412Abstract: An optical disk medium in which a learning area can be expanded, an optical disk information recording method and an optical disk apparatus are provided. A first lead-in area and second lead-in area are provided on the inner side and outer side of a data area. The first lead-in area includes a first learning area, management information recording area and data connection area and the second lead-in area includes a protection area which protects the user data in the inner portion thereof and a second learning area which is provided on the outer side of the protection area and sets an optimum condition for an operation of recording data into the data area. An area in which information indicating the utilization state of the protection area is recorded is prepared in one of the management information recording area and data connection area.Type: ApplicationFiled: May 12, 2005Publication date: November 17, 2005Inventors: Akihito Ogawa, Yutaka Kashihara, Hideki Takahashi, Yutaka Yamanaka, Shigeru Shimonou, Tatsunori Ide
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Publication number: 20050237874Abstract: An optical disc medium includes a system area and a data area following the system area. The data area includes at least one bordered area and a border area after the bordered area. A record control data in a recording operation of a user data in the bordered area is recorded in the system area. The data area may further include a lead-out area provided on an outermost circumference side in the data area. In this case, the lead-out area may have a record capacity equal to or less than that of the bordered area.Type: ApplicationFiled: April 22, 2005Publication date: October 27, 2005Inventors: Yutaka Yamanaka, Shigeru Shimonou, Tatsunori Ide, Hideki Takahashi, Akihito Ogawa, Yutaka Kashihara
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Publication number: 20050237875Abstract: An optical disc medium includes a system area and a data area following the system area. A plurality of sets of an extended record control data area, a bordered area, and a border are possibly set in the data area continuously from the system area, and a first set of the plurality of sets does not include the extended record control data area. A user data is recorded in each of the bordered areas. In each of the plurality of sets other than the first set, a record control data associated with the user data which is recorded in the bordered area of the set is recorded in the extended record control data area.Type: ApplicationFiled: April 22, 2005Publication date: October 27, 2005Inventors: Yutaka Yamanaka, Shigeru Shimonou, Tatsunori Ide, Hideki Takahashi, Akihito Ogawa, Yutaka Kashihara
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Publication number: 20030053243Abstract: A positioning control apparatus for controlling a moving member to trace the position of a target member which almost equally repeats the position shift at a predetermined period comprises a position detector for detecting a relative position error, a first adder for adding a delay signal and a position error signal, a signal delay unit for outputting the delay signal which is obtained by delaying an output signal of the first adder at a period corresponding to the position shift of the target member, a second adder for adding the position error signal and the delay signal, a third adder for adding an output of the second adder and the delay signal via a filter, a compensating unit for performing the compensation for offset and/or the compensation for stabilization of the positioning control apparatus based on an output of the third adder, a drive unit for driving the moving member based on an output of the compensating unit, and a delay-amount setting unit for setting the amount of delay of a signal delayedType: ApplicationFiled: May 29, 2002Publication date: March 20, 2003Applicant: NEC CORPORATIONInventors: Masashi Kubota, Shigeru Shimonou, Naotoshi Iwazawa
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Patent number: 5990651Abstract: A stepping motor has Hall elements which detect the position of the rotor and which output detection signals that have the same period as the excitation period, and which leads the position of the rotor by 90 degrees. The stepping motor is driven by the output of a drive current that is obtained by multiplying the detection signals output from the Hall elements with a torque command signal that controls the output torque of the stepping motor.Type: GrantFiled: July 27, 1998Date of Patent: November 23, 1999Assignee: NEC CorporationInventors: Naotoshi Iwazawa, Shigeru Shimonou
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Patent number: 5859817Abstract: An optical disk apparatus includes first and second objective lenses, a carriage, a moving mechanism, a fixed optical system, a main control section, track access control circuits, a first positional shift correction circuit, a second positional shift correction circuit, first and second driving members, an arithmetic circuit, and a correction member. The first and second driving members slightly drive the first and second objective lenses in a track crossing direction in accordance with the first and second positional shift correction signals, respectively. The first and second positional shift correction circuits count first and second track position signals to output first and second positional error signals with respect to a target track, and output the first and second positional shift correction signals to the first and second driving members based on the first and second positional error signals and the first and second track position signals, respectively.Type: GrantFiled: September 12, 1997Date of Patent: January 12, 1999Assignee: NEC CorporationInventor: Shigeru Shimonou
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Patent number: 5737282Abstract: An optical disk apparatus includes first and second objective lenses, a carriage, a moving mechanism, a fixed optical system, a main control section, track access control circuits, a first positional shift correction circuit, a second positional shift correction circuit, first and second driving members, an arithmetic circuit, and a correction member. The first and second driving members slightly drive the first and second objective lenses in a track crossing direction in accordance with the first and second positional shift correction signals, respectively. The first and second positional shift correction circuits count first and second track position signals to output first and second positional error signals with respect to a target track, and output the first and second positional shift correction signals to the first and second driving members based on the first and second positional error signals and the first and second track position signals, respectively.Type: GrantFiled: February 27, 1996Date of Patent: April 7, 1998Assignee: NEC CorporationInventor: Shigeru Shimonou
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Patent number: 5293364Abstract: A stable and rapid track access control device capable of preventing, in the event of driving a converging lens of an optical disk drive to move a light beam, the lens from moving excessively. Assume that when the lens is driven to move the light beam, the movement of the lens exceeds a range which an optical lens can follow, increasing the positional deviation of the lens relative to the head. Then, the movement of the lens is so regulated as to equalize the speed of the lens and that of the head relative to each other.Type: GrantFiled: December 10, 1992Date of Patent: March 8, 1994Assignee: NEC CorporationInventor: Shigeru Shimonou