Patents by Inventor Noboru Mamiya
Noboru Mamiya 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: 8427922Abstract: An optical pickup device is so configured as to change the propagating directions of light fluxes in four light flux areas defined in the periphery of an optical axis of laser light, out of the laser light reflected on a disc, to separate the four light fluxes one from the other. A signal light area where only signal light exists is defined on a detecting surface of a photodetector. Sensors for signal light is disposed at a position in the signal light area to be irradiated by the signal light, and a tracking error signal is generated based on a signal from the sensors. A direct-current component of the tracking error signal resulting from positional displacements of the sensors is cancelled by adjusting a gain of the signal from the sensor.Type: GrantFiled: January 20, 2010Date of Patent: April 23, 2013Assignee: Sanyo Electric Co., Ltd.Inventors: Noboru Mamiya, Katsutoshi Hibino, Kenji Nagatomi
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Patent number: 8107330Abstract: An information recording and reproducing apparatus for increasing a speed of tilt control, including a portion for storing reference data, a portion for storing sample values data, a portion for obtaining positional information, a stilt servo generator, a tilt adjuster.Type: GrantFiled: February 3, 2005Date of Patent: January 31, 2012Assignee: Sanyo Electric Co., Ltd.Inventors: Yoshihisa Suzuki, Satoshi Sumi, Toshihide Hamaguchi, Kenji Nakao, Noboru Mamiya, Hideharu Toda, Tomohiro Goto
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Patent number: 7869322Abstract: The first layer (DVD layer) is first reproduced using the red layer light. Thereafter, search for the second layer (HDDVD layer) is performed with the blue laser light in accordance with the reproducing operation being temporarily interrupted for menu display (display for chapter or language selection). If the second layer is detected, a display indicating that the second layer can be selected is displayed over the menu display. If instruction to reproduce the second layer is input from the user according to the display, the reproducing operation of the first layer using the red laser light is switched to the reproducing operation of the second layer (HDDVD layer) using the blue laser light.Type: GrantFiled: May 2, 2006Date of Patent: January 11, 2011Assignee: Sanyo Electric Co., Ltd.Inventor: Noboru Mamiya
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Patent number: 7792002Abstract: When a disc loaded on a player is a hybrid next generation DVD, determination is made on whether the connected TV device is adaptable for the HD mode. Such determination is performed by whether or not the copyright protecting function of the connected TV device satisfies a condition set in advance. When adaptable for the HD mode, reproduction prioritizing the HDDVD layer is performed. When not adaptable for the HD mode, reproduction prioritizing the DVD layer is performed. Thus, the video content of HD mode recorded on the HDDVD layer is protected against leakage to the outside via the connected TV device by reproducing the DVD layer in preference in the case the copyright protecting function of the TV device is not sufficient.Type: GrantFiled: June 27, 2006Date of Patent: September 7, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Morio Nakatani, Masahiro Nakata, Noboru Mamiya
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Publication number: 20100182891Abstract: An optical pickup device is so configured as to change the propagating directions of light fluxes in four light flux areas defined in the periphery of an optical axis of laser light, out of the laser light reflected on a disc, to separate the four light fluxes one from the other. A signal light area where only signal light exists is defined on a detecting surface of a photodetector. Sensors for signal light is disposed at a position in the signal light area to be irradiated by the signal light, and a tracking error signal is generated based on a signal from the sensors. A direct-current component of the tracking error signal resulting from positional displacements of the sensors is cancelled by adjusting a gain of the signal from the sensor.Type: ApplicationFiled: January 20, 2010Publication date: July 22, 2010Applicant: SANYO Electric Co., Ltd.Inventors: Noboru Mamiya, Katsutoshi Hibino, Kenji Nagatomi
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Patent number: 7729217Abstract: The present invention aims to smoothly and adequately adjust recording laser power while an increase in processing load during recording is suppressed. When a recording operation start request is received, OPC is executed with reference to a target ? value (?t) of a disc to set recording laser power Pws. Recording operation is performed based on the set recording laser power Pws. When a system is brought into an intermittent standby state, R-OPC is executed, so the recording laser power Pws is adjusted and set again. Then, its subsequent recording operation is performed based on the recording laser power Pws which is set again. When a duration of the recording operation exceeds a maximal waiting time Ts, the recording operation is suspended so that the system is set to a recording standby state. Then, the R-OPC is executed, so that the recording laser power Pws is adjusted and set again.Type: GrantFiled: March 11, 2005Date of Patent: June 1, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Ken Hirose, Noboru Mamiya, Kenji Nakao, Satoshi Sumi, Koichi Kawakami
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Patent number: 7724630Abstract: The number of recording layers of the loaded disc is determined using the blue laser light. If the number of recording layers is two, drawing is performed in the recording layer on the near side when seen from the laser light entering side, and demodulation is performed with the HDDVD decoder. If demodulatable, the disc is determined as a disc in which two HDDVD layers are arranged. If not demodulatable, determination is made on whether or not the data of the recording layer is demodulatable with the DVD decoder. If demodulatable with the DVD decoder, the laser light is switched to the red laser light and the number of recording layers is determined. If two recording layers are detected in this determination, the disc is determined as a disc in which two DVD layers are arranged. On the other hand, if one recording layer is detected, the disc is determined as a hybrid HDDVD in which one HDDVD layer and one DVD layer are arranged.Type: GrantFiled: May 1, 2006Date of Patent: May 25, 2010Assignee: Sanyo Electric Co., Ltd.Inventor: Noboru Mamiya
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Patent number: 7564751Abstract: In order to set optimum laser power for a disk smoothly and appropriately with a small number of times of test writing, an integrated value Sn is obtained from each kind of laser power Pwn set for the test writing and the modulation factor m(Pwn) of a reflection light intensity obtained through the test writing with the laser power Pwn using an expression “Sn=m(Pwn)×Pwn2”, laser power Pwth is obtained at which the modulation factor m(Pwn) becomes zero when relational characteristics of the integrated value Sn and the laser power Pwn are linearly approximated, and optimum laser power Pw is set based on the laser power Pwth. Here, the optimum laser power Pw is obtained from the target ? value of the disk using an expression “Pw=Pwth×{1+1/(?+1)}”. The target ? value is obtained from an ADIP of the disk.Type: GrantFiled: January 6, 2005Date of Patent: July 21, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Noboru Mamiya, Ken Hirose, Kenji Nakao
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Patent number: 7548496Abstract: An optimum power set value Pwp1 for Layer 1 obtained by an OPC is used as an initial value Pw21 of the OPC for Layer 2. At this time, an inclination Ia is obtained from an approximation line of a ? value for Layer 1 (recording power to the ? value) obtained by the OPC. From the ? value obtained by performing a test recording at the initial value Pw21 and the inclination Ia, an approximation line of a ? value for Layer 2 (recording power to the ? value) is obtained. Then, on the obtained approximation line, a laser power for providing a target ? value (?t) is obtained, and set as an optimum power Pwp2 for Layer 2. Thus, an optimum power setting conforming to characteristics of a disc can be performed. As a result, setting the optimum power for Layer 2 can be performed more smoothly and quickly.Type: GrantFiled: December 5, 2005Date of Patent: June 16, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose
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Patent number: 7505384Abstract: Laser power adjustment is performed using a power calibration area (PCA) until the PCA is used up. After the PCA is used up, an additional PCA is reserved at the next recording start position and laser power adjustment is performed using the additional PCA. When an additional PCA is reserved, the additional PCA exists between an information file recorded this time and the last one of information files recorded previously in terms of a physical format. However, information test-written into the additional PCA is not regarded as an information file and PMA information is generated only from the information file recorded this time by excluding the test-written information. As a result, a situation is obtained in which the additional PCA does not logically exist on the disk and there will never occur an inconvenient situation where the additional PCA is erroneously reproduced at the time of reproduction.Type: GrantFiled: January 28, 2005Date of Patent: March 17, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose
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Patent number: 7428198Abstract: Provided is an optical disc device in which adjustment precision of recording laser power is improved without complication of a processing sequence during recording operation. In response to a recording start instruction, OPC is executed using an inner disc drive zone to set an initial value of recording laser power Pws. Then, when a first recording instruction REC(1) is detected, recording is successively performed from the head of a data area using the laser power Pws. After that, when an intermittent standby period is set, sample data is recorded to a next recording position and R-OPC is executed. Therefore, the recording laser power Pws is set again. Next, when a second recording instruction REC(2) is detected, recording is successively performed from a next recording position, that is, a position next to an end portion of the first recording instruction REC(1) using the reset laser power Pws.Type: GrantFiled: March 10, 2005Date of Patent: September 23, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose, Satoshi Sumi
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Patent number: 7327651Abstract: Provided is an optical disc device in which adjustment precision of recording laser power is improved without complication of a processing sequence during recording operation. In response to a recording start instruction, OPC is executed using an inner disc drive zone to set an initial value of recording laser power Pws. Then, when a recording instruction REC(1) is issued, recording is successively performed from the head of a data area using the laser power Pws. After that, when an intermittent standby period T is set, sample data is recorded at the number of times corresponding to the intermittent standby period T in a next recording position, and R-OPC is executed. Therefore, the recording laser power Pws is set again. Then, when a second recording instruction REC(2) is issued, recording is successively performed from a next recording position, that is, a position next to an end portion of data recorded by the first recording instruction REC(1) using the reset laser power Pws.Type: GrantFiled: March 16, 2005Date of Patent: February 5, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose, Satoshi Sumi
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Publication number: 20070002713Abstract: When a disc loaded on a player is a hybrid next generation DVD, determination is made on whether the connected TV device is adaptable for the HD mode. Such determination is performed by whether or not the copyright protecting function of the connected TV device satisfies a condition set in advance. When adaptable for the HD mode, reproduction prioritizing the HDDVD layer is performed. When not adaptable for the HD mode, reproduction prioritizing the DVD layer is performed. Thus, the video content of HD mode recorded on the HDDVD layer is protected against leakage to the outside via the connected TV device by reproducing the DVD layer in preference in the case the copyright protecting function of the TV device is not sufficient.Type: ApplicationFiled: June 27, 2006Publication date: January 4, 2007Inventors: Morio Nakatani, Masahiro Nakata, Noboru Mamiya
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Publication number: 20060256692Abstract: The number of recording layers of the loaded disc is determined using the blue laser light. If the number of recording layers is two, drawing is performed in the recording layer on the near side when seen from the laser light entering side, and demodulation is performed with the HDDVD decoder. If demodulatable, the disc is determined as a disc in which two HDDVD layers are arranged. If not demodulatable, determination is made on whether or not the data of the recording layer is demodulatable with the DVD decoder. If demodulatable with the DVD decoder, the laser light is switched to the red laser light and the number of recording layers is determined. If two recording layers are detected in this determination, the disc is determined as a disc in which two DVD layers are arranged. On the other hand, if one recording layer is detected, the disc is determined as a hybrid HDDVD in which one HDDVD layer and one DVD layer are arranged.Type: ApplicationFiled: May 1, 2006Publication date: November 16, 2006Inventor: Noboru Mamiya
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Publication number: 20060256680Abstract: The first layer (DVD layer) is first reproduced using the red layer light. Thereafter, search for the second layer (HDDVD layer) is performed with the blue laser light in accordance with the reproducing operation being temporarily interrupted for menu display (display for chapter or language selection). If the second layer is detected, a display indicating that the second layer can be selected is displayed over the menu display. If instruction to reproduce the second layer is input from the user according to the display, the reproducing operation of the first layer using the red laser light is switched to the reproducing operation of the second layer (HDDVD layer) using the blue laser light.Type: ApplicationFiled: May 2, 2006Publication date: November 16, 2006Inventor: Noboru Mamiya
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Publication number: 20060126463Abstract: From optimum power set values of Pwp1 and Pwp2 obtained by performing an OPC on Layer 1 and Layer 2, respectively, an interlayer power ratio ?=Pwp2/Pwp1 is obtained. In transition from Layer 1 to Layer 2, the last laser power Pwr1 of Layer 1 adjusted by an R-OPC is multiplied by an interlayer power ratio ? to set a laser power in transition to Layer 2, at which recording on Layer 2 starts. In this case, the OPC is not necessarily performed in transition from Layer 1 to Layer 2, so transition to Layer 2 can be performed quickly. Also, a correction is performed based on the interlayer power ratio ?, so a power can be set to an appropriate set value in transition to Layer 2.Type: ApplicationFiled: December 6, 2005Publication date: June 15, 2006Applicant: SANYO Electric Co., Ltd.Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose
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Publication number: 20060126462Abstract: An optimum power set value Pwp1 for Layer 1 obtained by an OPC is used as an initial value Pw21 of the OPC for Layer 2. At this time, an inclination Ia is obtained from an approximation line of a ? value for Layer 1 (recording power to the ? value) obtained by the OPC. From the ? value obtained by performing a test recording at the initial value Pw21 and the inclination Ia, an approximation line of a ? value for Layer 2 (recording power to the ? value) is obtained. Then, on the obtained approximation line, a laser power for providing a target ? value (?t) is obtained, and set as an optimum power Pwp2 for Layer 2. Thus, an optimum power setting conforming to characteristics of a disc can be performed. As a result, setting the optimum power for Layer 2 can be performed more smoothly and quickly.Type: ApplicationFiled: December 5, 2005Publication date: June 15, 2006Applicant: SANYO Electric Co., Ltd.Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose
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Publication number: 20050232122Abstract: Provided is an optical disc device in which adjustment precision of recording laser power is improved without complication of a processing sequence during recording operation. In response to a recording start instruction, OPC is executed using an inner disc drive zone to set an initial value of recording laser power Pws. Then, when a recording instruction REC(1) is issued, recording is successively performed from the head of a data area using the laser power Pws. After that, when an intermittent standby period T is set, sample data is recorded at the number of times corresponding to the intermittent standby period T in a next recording position, and R-OPC is executed. Therefore, the recording laser power Pws is set again. Then, when a second recording instruction REC(2) is issued, recording is successively performed from a next recording position, that is, a position next to an end portion of data recorded by the first recording instruction REC(1) using the reset laser power Pws.Type: ApplicationFiled: March 16, 2005Publication date: October 20, 2005Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose, Satoshi Sumi
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Publication number: 20050213451Abstract: Provided is an optical disc device in which adjustment precision of recording laser power is improved without complication of a processing sequence during recording operation. In response to a recording start instruction, OPC is executed using an inner disc drive zone to set an initial value of recording laser power Pws. Then, when a first recording instruction REC(1) is detected, recording is successively performed from the head of a data area using the laser power Pws. After that, when an intermittent standby period is set, sample data is recorded to a next recording position and R-OPC is executed. Therefore, the recording laser power Pws is set again. Next, when a second recording instruction REC(2) is detected, recording is successively performed from a next recording position, that is, a position next to an end portion of the first recording instruction REC(1) using the reset laser power Pws.Type: ApplicationFiled: March 10, 2005Publication date: September 29, 2005Inventors: Kenji Nakao, Noboru Mamiya, Ken Hirose, Satoshi Sumi
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Publication number: 20050213452Abstract: The present invention aims to smoothly and adequately adjust recording laser power while an increase in processing load during recording is suppressed. When a recording operation start request is received, OPC is executed with reference to a target ? value (?t) of a disc to set recording laser power Pws. Recording operation is performed based on the set recording laser power Pws. When a system is brought into an intermittent standby state, R-OPC is executed, so the recording laser power Pws is adjusted and set again. Then, its subsequent recording operation is performed based on the recording laser power Pws which is set again. When a duration of the recording operation exceeds a maximal waiting time Ts, the recording operation is suspended so that the system is set to a recording standby state. Then, the R-OPC is executed, so that the recording laser power Pws is adjusted and set again.Type: ApplicationFiled: March 11, 2005Publication date: September 29, 2005Inventors: Ken Hirose, Noboru Mamiya, Kenji Nakao, Satoshi Sumi, Koichi Kawakami