Patents by Inventor Hiroshi Nishiwaki
Hiroshi Nishiwaki 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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Publication number: 20200040477Abstract: The present invention provides a plating solution containing chromium sulfate and formic acid at a concentration of Cr3+ ions of 0.1 mol/L or more and 1 mol/L or less and a concentration of formic acid of 0.05 mol/L or more and 0.2 mol/L or less.Type: ApplicationFiled: August 25, 2017Publication date: February 6, 2020Inventors: Hidemi NAWAFUNE, Hiroshi NISHIWAKI, Toshikazu MURATA, Hidehiro YOSHIOKA, Yoshiyuki KAMEGAWA
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Patent number: 8331213Abstract: An information recording medium (100) is provided with (i) a first information recording area wherein a first track for reproducing first information based on a first track pitch is formed by a laser beam, and (ii) a second information recording area wherein a second track for reproducing second information based on a second track pitch different from the first track pitch is formed by a laser beam. The groove shape of the first track is different from the groove shape of the second track.Type: GrantFiled: July 13, 2006Date of Patent: December 11, 2012Assignees: Pioneer Corporation, Mitsubishi Kagaku Media Co., Ltd.Inventors: Hiroshi Nishiwaki, Eiji Muramatsu, Michikazu Horie, Kenjirou Kiyono
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Patent number: 8203920Abstract: An information recording apparatus (1) is provided with: a recording device (102) for recording information onto an information recording medium (100) by irradiating the information recording medium with a recording laser beam (L); a controlling device (103) for recording calibration data onto the information recording medium by using the recording laser beam in which the power is adjusted gradually; and a detecting device (107) for detecting with a push-pull signal after the recording of the calibration data, the recording of the calibration data being ended if the push-pull signal exceeds a predetermined range, an optimum power of the recording laser beam being determined from a jitter amount included in a reproduction signal.Type: GrantFiled: September 28, 2007Date of Patent: June 19, 2012Assignee: Pioneer CorporationInventors: Shoji Fuse, Junichi Furukawa, Hiroshi Nishiwaki, Yoshio Sasaki
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Patent number: 8144556Abstract: An information recording apparatus (1) is provided with: a recording device (102) for recording information onto an information recording medium (100) by irradiating the information recording medium with a recording laser beam (L); a controlling device (103) for recording calibration data onto the information recording medium by using the recording laser beam in which the power is adjusted gradually; and a detecting device (107) for detecting degree of modulation of a reproduction signal after the recording of the calibration data, the recording of the calibration data being ended if the degree of modulation exceeds a predetermined range, an optimum power of the recording laser beam being determined from a jitter amount included in a reproduction signal.Type: GrantFiled: September 28, 2007Date of Patent: March 27, 2012Assignee: Pioneer CorporationInventors: Shoji Fuse, Junichi Furukawa, Hiroshi Nishiwaki, Yoshio Sasaki
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Patent number: 8139465Abstract: An information recording apparatus (1) is provided with: a recording device (102) for recording information onto an information recording medium (100) by irradiating the information recording medium with a recording laser beam (L); a controlling device (103) for recording calibration data onto the information recording medium by using the recording laser beam in which the power is adjusted gradually, thereby obtaining the optimum amount of the recording laser beam; and a detecting device (107) for detecting returned light simultaneously with the recording in the recording of the calibration data, the recording of the calibration data being ended if amount of the returned light exceeds a predetermined range, an optimum power of the recording laser beam being determined from a jitter amount included in a reproduction signal.Type: GrantFiled: September 28, 2007Date of Patent: March 20, 2012Assignee: Pioneer CorporationInventors: Shoji Fuse, Junichi Furukawa, Hiroshi Nishiwaki, Yoshio Sasaki
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Publication number: 20110188361Abstract: A recording apparatus includes: a recording device for recording data onto a recording medium by applying a laser beam whose power can be adjusted; a first controlling device controlling the recording device to record calibration data while adjusting power; a first detecting device detecting calibration data recording quality; a second detecting device detecting push-pull signal amplitude by reading the calibration data; a first calculating device calculating a power by which the recording quality is desired quality, as a first optimum power; a second calculating device calculating a power by which the amplitude of the recorded push-pull signal satisfies a first condition and by which the recording quality satisfies a second condition, as a second optimum power, if the push-pull amplitude fails the first condition; and a second controlling device controlling the recording device to start recording record data by applying the laser beam with the first or second optimum power.Type: ApplicationFiled: September 28, 2007Publication date: August 4, 2011Applicant: Pioneer CorporationInventors: Shoji Fuse, Junichi Furukawa, Hiroshi Nishiwaki, Yoshio Sasaki
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Publication number: 20100309762Abstract: An information recording apparatus (1) is provided with: a recording device (102) for recording information onto an information recording medium (100) by irradiating the information recording medium with a recording laser beam (L); a controlling device (103) for recording calibration data onto the information recording medium by using the recording laser beam in which the power is adjusted gradually; and a detecting device (107) for detecting degree of modulation of a reproduction signal after the recording of the calibration data, the recording of the calibration data being ended if the degree of modulation exceeds a predetermined range, an optimum power of the recording laser beam being determined from a jitter amount included in a reproduction signal.Type: ApplicationFiled: September 28, 2007Publication date: December 9, 2010Applicant: PIONEER CORPORATIONInventors: Shoji Fuse, Junichi Furukawa, Hiroshi Nishiwaki, Yoshio Sasaki
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Publication number: 20100309763Abstract: An information recording apparatus (1) is provided with: a recording device (102) for recording information onto an information recording medium (100) by irradiating the information recording medium with a recording laser beam (L); a controlling device (103) for recording calibration data onto the information recording medium by using the recording laser beam in which the power is adjusted gradually, thereby obtaining the optimum amount of the recording laser beam; and a detecting device (107) for detecting returned light simultaneously with the recording in the recording of the calibration data, the recording of the calibration data being ended if amount of the returned light exceeds a predetermined range, an optimum power of the recording laser beam being determined from a jitter amount included in a reproduction signal.Type: ApplicationFiled: September 28, 2007Publication date: December 9, 2010Applicant: PIONEER CORPORATIONInventors: Shoji Fuse, Junichi Furukawa, Hiroshi Nishiwaki, Yoshio Sasaki
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Publication number: 20100302922Abstract: An information recording device (1) comprises recording means (102) for recording information on an information recording medium by irradiating the information recording medium (100) with a laser beam for recording (L), control means (103) for recording data for calibration on the information recording medium by using the laser beam for recording whose power is adjusted step-by-step, and detection means (107) for detecting a push-pull signal in the area in which the data for calibration is recorded for each time when the power is adjusted step-by-step. When the push-pull signal exceeds the predetermined range, the recording of the data for calibration ends and the most appropriate power of the laser beam for recording is determined according to the regenerated signal obtained by reading the data for calibration.Type: ApplicationFiled: September 28, 2007Publication date: December 2, 2010Applicant: PIONEER CORPORATIONInventors: Shoji Fuse, Junichi Furukawa, Hiroshi Nishiwaki, Yoshio Sasaki
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Patent number: 7768901Abstract: A recording layer close to a disc surface is divided into at least two recording areas, a main information recording area D1A and an auxiliary information area (BCA) D1C. Grooves are formed in the main information recording area D1A. Marks M are formed in barcode form representing identifying information in the auxiliary information recording area (BCA) D1C. Track grooves G1 or prepits are formed in the recording layer of the auxiliary information recording area (BCA) D1C and have a depth smaller than that of the groove formed in the main information recording area D1A.Type: GrantFiled: October 6, 2006Date of Patent: August 3, 2010Assignee: Pioneer CorporationInventors: Seiro Oshima, Toshihiko Takishita, Eiji Muramatsu, Hiroshi Nishiwaki
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Publication number: 20090207713Abstract: An information recording medium (100) is provided with (i) a first information recording area wherein a first track for reproducing first information based on a first track pitch is formed by a laser beam, and (ii) a second information recording area wherein a second track for reproducing second information based on a second track pitch different from the first track pitch is formed by a laser beam. The groove shape of the first track is different from the groove shape of the second track.Type: ApplicationFiled: July 13, 2006Publication date: August 20, 2009Applicants: PIONEER CORPORATION, MITSUBISHI KAGKU MEDIA CO., LTD.Inventors: Hiroshi Nishiwaki, Eiji Muramatsu, Michikazu Horie, Kenjirou Kiyono
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Publication number: 20090129220Abstract: An information recording medium (100) is provided with (i) a first information recording area wherein a first track for reproducing first information based on a first track pitch is formed by a laser beam, and (ii) a second information recording area wherein a second track for reproducing second information based on a second track pitch different from the first track pitch is formed by a laser beam. In the second track, a recording mark is previously recorded.Type: ApplicationFiled: July 13, 2006Publication date: May 21, 2009Applicants: PIONEER CORPORATION, MITSUBISHI KAGAKU MEDIA CO., LTD.Inventors: Hiroshi Nishiwaki, Eiji Muramatsu, Michikazu Horie, Kenjirou Kiyono
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Patent number: 7440364Abstract: A detection signal S1 outputted from a light reception unit (11A) of detection elements (11) formed by four-division light reception element is added to a detection signal S4 outputted from a light reception unit (11D) so as to obtain an addition signal S14 and a phase difference signal P1 indicating the phase difference between the addition signal S14 and the detection signal S1. Furthermore, a phase difference signal P4 indicating the phase difference between the addition signal S14 and the detection signal S4 is obtained. The phase difference signal P4 is subtracted from the phase difference signal P1 so as to generate a tracking error signal TE1.Type: GrantFiled: March 1, 2005Date of Patent: October 21, 2008Assignee: Pioneer CorporationInventors: Takayuki Nomoto, Hiroshi Nishiwaki
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Publication number: 20070189134Abstract: A detection signal S1 outputted from a light reception unit (11A) of detection elements (11) formed by four-division light reception element is added to a detection signal S4 outputted from a light reception unit (11D) so as to obtain an addition signal S14 and a phase difference signal P1 indicating the phase difference between the addition signal S14 and the detection signal S1. Furthermore, a phase difference signal P4 indicating the phase difference between the addition signal S14 and the detection signal S4 is obtained. The phase difference signal P4 is subtracted from the phase difference signal P1 so as to generate a tracking error signal TE1.Type: ApplicationFiled: March 1, 2005Publication date: August 16, 2007Inventors: Takayuki Nomoto, Hiroshi Nishiwaki
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Publication number: 20070081437Abstract: A recording layer close to a disc surface is divided into at least two recording areas, a main information recording area D1A and an auxiliary information area (BCA) D1C. Grooves are formed in the main information recording area D1A. Marks M are formed in barcode form representing identifying information in the auxiliary information recording area (BCA) D1C. Track grooves G1 or prepits are formed in the recording layer of the auxiliary information recording area (BCA) D1C and have a depth smaller than that of the groove formed in the main information recording area D1A.Type: ApplicationFiled: October 6, 2006Publication date: April 12, 2007Inventors: Seiro Oshima, Toshihiko Takishita, Eiji Muramatsu, Hiroshi Nishiwaki
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Patent number: 6992953Abstract: A tracking servo apparatus in which reflection light obtained when a laser beam is irradiated onto a recording surface of an optical disc is photoelectrically converted, thereby obtaining a photoelectric conversion signal, a tracking error signal showing a deviation amount of an irradiating position of said laser beam for a track in a disc radial direction on the recording surface is generated by the photoelectric conversion signal, a spherical aberration occurring in an optical system is detected, a level of the tracking error signal is corrected on the basis of the detection result, and the irradiating position of the laser beam is moved in the disc radial direction in accordance with the level-corrected tracking error signal.Type: GrantFiled: March 22, 2001Date of Patent: January 31, 2006Assignee: Pioneer CorporationInventors: Mitsuru Sato, Junichi Furukawa, Kazuo Takahashi, Takanori Maeda, Hiroshi Nishiwaki, Takayuki Nomoto, Ikuya Kikuchi
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Patent number: 6552988Abstract: An information reproducing apparatus includes: a light emitting device that emits a light beam to the recording medium; a detecting device that detects the light beam reflected by the recording medium, and that generates a detection signal including a first component and a second component which have different middle levels; a sampling device that samples the first component and the second component included in the generated detection signal; an extraction device that extracts a first sampling value closest to the middle level of the first component from the first component, and that extracts a second sampling value closest to the middle level of the second component from the second component; a signal generation device that generates a first middle level signal by using the extracted first sampling value, and that generates a second middle level signal by using the extracted second sampling value; a compensation device that shifts the first component and the second component such that both the first middle lType: GrantFiled: February 26, 1999Date of Patent: April 22, 2003Assignee: Pioneer Electric CorporationInventors: Hiroshi Nishiwaki, Hideki Hayashi
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Publication number: 20010040844Abstract: A tracking servo apparatus in which reflection light obtained when a laser beam is irradiated onto a recording surface of an optical disc is photoelectrically converted, thereby obtaining a photoelectric conversion signal, a tracking error signal showing a deviation amount of an irradiating position of said laser beam for a track in a disc radial direction on the recording surface is generated by the photoelectric conversion signal, a spherical aberration occurring in an optical system is detected, a level of the tracking error signal is corrected on the basis of the detection result, and the irradiating position of the laser beam is moved in the disc radial direction in accordance with the level-corrected tracking error signal.Type: ApplicationFiled: March 22, 2001Publication date: November 15, 2001Inventors: Mitsuru Sato, Junichi Furukawa, Kazuo Takahashi, Takanori Maeda, Hiroshi Nishiwaki, Takayuki Nomoto, Ikuya Kikuchi
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Patent number: 5722324Abstract: An ink trough for a printing press is formed between two rollers and two side members on opposite ends of the rollers. The rollers can be operated independently for ink removal and cleaning purposes.Type: GrantFiled: October 15, 1996Date of Patent: March 3, 1998Assignee: Technoroll Co., Ltd.Inventors: Hiroshi Nishiwaki, Toshiharu Fujiwara, Kazushi Hatanaka, Nobuyuki Baba
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Patent number: 5150738Abstract: A cover is woven into a cylindrical shape with many warp yarns composed of a hydrophilic fiber and with one or several weft yarns composed of a hydrophilic fiber with a water shrinkage about 10 to 40%. This cover has a quality of rapid response for controlling the moisturizing condition of the printing surface which is designated by the difference in the weight of the cloth of the cover between a wetted condition in which the cover absorbs and stores enough water without dropping and a dry condition in which the cover is treated with a centrifugal dehydrator for 10 minutes after being wetted. The warp and weft yarns are of less than 220 denier and have a density of 20 threads per centimeter. The weight of the cloth of the cover is less than 200 g/m.sup.2 and the thickness is less than 0.5 mm.Type: GrantFiled: April 3, 1991Date of Patent: September 29, 1992Assignees: Techno Roll Co. Ltd., Jomac, Inc.Inventor: Hiroshi Nishiwaki