Patents by Inventor Shinichi Hanzawa
Shinichi Hanzawa 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: 20240120353Abstract: A solid-state imaging device (200) includes a photoelectric conversion device (211), a current-voltage conversion circuit (310), and an output circuit. The photoelectric conversion device (211) performs photoelectric conversion of incident light. The current-voltage conversion circuit (310) includes a first transistor (311) that converts an amount of electric charge generated by photoelectric conversion into a voltage signal. The output circuit includes a second transistor having an S value smaller than an S value of the first transistor (311) and generates an output signal based on the voltage signal.Type: ApplicationFiled: January 28, 2022Publication date: April 11, 2024Inventors: KATSUHIKO HANZAWA, SHINICHI MIYAKE, KAZUYUKI TOMIDA
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Publication number: 20040004300Abstract: A stamper having a good cost performance, which can be easily separated (released) from a layer of photo-curing resin, is provided. A process for producing an optical multi-layer recording medium having a good productivity is also provided by using such a stamper. The process for producing an optical multi-layer recording medium includes the steps of: laminating a layer of non-cured photo-curing resin and a transparent stamper made of amorphous polyolefin resin in this sequence on a substrate; curing the non-cured photo-curing resin with light permeated through the transparent stamper; and removing the transparent stamper.Type: ApplicationFiled: May 29, 2003Publication date: January 8, 2004Applicant: PIONEER CORPORATIONInventors: Masataka Yamaguchi, Shinichi Hanzawa, Toshihiko Takishita
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Publication number: 20030235655Abstract: A multi-layer optical recording medium includes a light transmissive intermediate layer. This intermediate layer is formed by at least two times of laminating steps. The recording medium has smaller bending, and the intermediate layer has uniform thickness.Type: ApplicationFiled: August 26, 2002Publication date: December 25, 2003Applicant: Pioneer CorporationInventors: Takanori Mitsuhata, Yoichi Okumura, Takahiro Togashi, Masataka Yamaguchi, Hideo Kudo, Shinichi Hanzawa, Toshihiki Takishita
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Publication number: 20030145941Abstract: Method and apparatus for manufacturing an optical disc having a light-transmitting layer of a uniform thickness over the entire surface of a substrate is provided whereon a recording and/or a reproducing of information signals is carried out by a light input through the light-transmitting layer.Type: ApplicationFiled: December 20, 2002Publication date: August 7, 2003Inventor: Shinichi Hanzawa
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Patent number: 6572946Abstract: A substrate has a disk-like shape with a thickness of about 1.2 mm, and a diameter of D1, and further a central hole of diameter D2. A signal recording layer is formed on the substrate, and further a transparent sheet, through which a laser beam passes to record and reproduce information, is stacked up on the signal recording layer. The transparent sheet has a circular shape with a diameter d1, and the central hole thereof has a diameter d2. In a size-relationship of these diameters, d1 is formed to be smaller than D1, and d2 is formed to be larger than D2. In the other words, the transparent sheet, which is attached on the substrate so as to cover the signal recording layer, has outer and inner ends being positioned inside both an outer peripheral end of the substrate and a peripheral end of the central hole, so that a damage such as tearing off the peripheral end of the transparent sheet can be avoided since the peripheral end is inwardly apart from a finger-touch-area.Type: GrantFiled: June 6, 2001Date of Patent: June 3, 2003Assignee: Pioneer CorporationInventor: Shinichi Hanzawa
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Publication number: 20010048994Abstract: A substrate has a disk-like shape with a thickness of about 1.2 mm, and a diameter of D1, and further a central hole of diameter D2. A signal recording layer is formed on the substrate, and further a transparent sheet, through which a laser beam passes to record and reproduce information, is stacked up on the signal recording layer. The transparent sheet has a circular shape with a diameter d1, and the central hole thereof has a diameter d2. In a size-relationship of these diameters, d1 is formed to be smaller than D1, and d2 is formed to be larger than D2. In the other words, the transparent sheet, which is attached on the substrate so as to cover the signal recording layer, has outer and inner ends being positioned inside both an outer peripheral end of the substrate and a peripheral end of the central hole, so that a damage such as tearing off the peripheral end of the transparent sheet can be avoided since the peripheral end is inwardly apart from a finger-touch-area.Type: ApplicationFiled: June 6, 2001Publication date: December 6, 2001Applicant: PIONEER CORPORATIONInventor: Shinichi Hanzawa
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Patent number: 6169721Abstract: An optical recording medium has a substrate having an annular grooves, a recording layer including an organic coloring matter and formed on the substrate, and a metallic reflection layer. The recording layer has a thickness so as to have an absorbance between 0.65 and 0.75. Information is recorded in the recording layer by a laser beam having a wavelength between 600 and 700 nm, using an objective lens having a numerical aperture between 0.55 and 0.70.Type: GrantFiled: August 26, 1998Date of Patent: January 2, 2001Assignees: Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Toshihiko Takishita, Shinichi Hanzawa, Shigenori Murakami, Atsushi Kondo, Ayumi Mitsumori, Miki Kusama, Makoto Matsukawa
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Patent number: 5827593Abstract: A disc substrate inject-molded comprises; a first circular surface having an inner non-data region formed around a center hole thereof and an outer data region formed around the non-data region; a second circular flat surface opposite and parallel to the first circular surface; and a ring shaped stack-rib formed on the non-data region.Type: GrantFiled: December 17, 1996Date of Patent: October 27, 1998Assignees: Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Haruhisa Maruyama, Masaaki Motokawa, Shinichi Hanzawa
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Patent number: 5824385Abstract: An optical disc has a pair of light-transmissible circular substrates each having an inner non-data region disposed around a center hole thereof, a data region disposed around the inter non-data region for bearing signals corresponding to information to be recorded and an outer non-data region disposed around the data region which are formed on a major surface of the substrate. The optical disc has a reflective layer formed on the data region and a protective layer made of an ultraviolet ray setting resin containing metal ions formed on the reflective layer. The optical disc has an adhesive layer made of an adhesive composition containing an ultraviolet ray setting component and an anaerobic hardening component disposed between the protective layers of the circular substrates for adhering the circular substrates.Type: GrantFiled: August 28, 1996Date of Patent: October 20, 1998Assignees: Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Masahide Itoigawa, Shinichi Hanzawa, Yoshitaka Nonaka, Junichi Watanabe, Haruhisa Maruyama
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Patent number: 5820961Abstract: In order to provide a laminated optical disc having a sufficient display portion and a reliable print display, a pair of disc substrates are bonded together to form an optical disc, in which one disc substrate is colored and contents of recorded matters are displayed on the surface thereof so as to eliminate the ground solid print layer for the print display layer and to avoid deformation or warping of the disc.Type: GrantFiled: December 10, 1996Date of Patent: October 13, 1998Assignees: Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Haruhisa Maruyama, Shinichi Hanzawa, Masaaki Motokawa
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Patent number: 5759332Abstract: A laminate optical disc which has excellent heat resistance and also has sufficient bond strength. Radiation-curing adhesive layers are formed on a pair of transparent base plates excluding the outermost circumferential portions, respectively, and an ultraviolet-curing resin is applied to the outermost circumferential portion. Then, the pair of transparent base plates are bonded together by the radiation-curing adhesive layers, and also ultraviolet light is irradiated to the ultraviolet-curing resin to fix the base plates firmly to each other along the outermost circumferential portions. In a process for producing a laminate optical disc, radiation-curing adhesive layers are formed respectively on a pair of transparent base plates, and then irradiated with a radiation excluding at least the outermost circumferential portion to be tackified.Type: GrantFiled: May 21, 1996Date of Patent: June 2, 1998Assignees: Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Masahide Itoigawa, Mitsuhiko Sasano, Shinichi Hanzawa, Masaaki Motokawa, Yoshikazu Hirai, Haruhisa Maruyama
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Patent number: 5475667Abstract: An optical pickup for emitting a laser beam is provided for reading data recorded on an optical disc. The axis of the laser beam is tilted at a skew angle from a perpendicular line to the surface of the disc. Error rate in reproduced data read out by the pickup is determined, and an inferior disc having a rare error rate is eliminated.Type: GrantFiled: October 28, 1994Date of Patent: December 12, 1995Assignees: Pioneer Electronic Corporation, Pioneer Video CorporationInventors: Kenji Kamimura, Shinichi Hanzawa