Patents by Inventor Keiichiro Horai
Keiichiro Horai 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: 7200102Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: GrantFiled: March 21, 2005Date of Patent: April 3, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi, Mitsuaki Oshima
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Patent number: 7170839Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: GrantFiled: March 21, 2005Date of Patent: January 30, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi, Mitsuaki Oshima
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Patent number: 7170848Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: GrantFiled: March 21, 2005Date of Patent: January 30, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi
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Patent number: 7136348Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: GrantFiled: March 21, 2005Date of Patent: November 14, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi, Mitsuaki Oshima
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Patent number: 7061850Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: GrantFiled: July 13, 2000Date of Patent: June 13, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi, Yoshihisa Fukushima, Mitsuaki Oshima
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Publication number: 20050163028Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: ApplicationFiled: March 21, 2005Publication date: July 28, 2005Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi
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Publication number: 20050163030Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: ApplicationFiled: March 21, 2005Publication date: July 28, 2005Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi, Mitsuaki Oshima
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Publication number: 20050163009Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: ApplicationFiled: March 21, 2005Publication date: July 28, 2005Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi, Mitsuaki Oshima
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Publication number: 20050163027Abstract: A main information area 31 capable of recording an information signal and a subsidiary information area 32 for recording subsidiary information that is different from the information signal are divided in one principal plane direction of a substrate, and an information layer for recording the information signal in the main information area 31 is provided also in the subsidiary information area 32, and medium identification information for distinguishing the medium optically is recorded in the information layer of the subsidiary information area 32 without changing the shape of the information layer. As a result, the medium identification information can be recorded in an optical recording medium 1 stably. In particular, the initialization of a phase change type optical recording medium and the recording of the medium identification information can be performed at the same time, so that the production process can be simplified, and the production costs can be reduced.Type: ApplicationFiled: March 21, 2005Publication date: July 28, 2005Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroaki Irie, Keiichiro Horai, Kenichi Nishiuchi, Mitsuaki Oshima
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Patent number: 6607869Abstract: An optical information recording medium having a recording layer for inducing a reversible phase change by irradiation with energy beam. The recording layer contains Te, Ge, Sb, and N, and the concentration of the N being contained is in a range of about 0.1% by atom to about 10% by atom. In this constitution, an excellent repeated recording and erasing performance is obtained.Type: GrantFiled: July 10, 1998Date of Patent: August 19, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Rie Kojima, Keiichiro Horai, Toshiaki Kashihara, Noboru Yamada
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Patent number: 5151295Abstract: A method of depositing the layers of an optical recording medium to their requisite thicknesses is disclosed in which optical monitoring of the reflectivity of a first dielectric layer during deposition is used to determine the deposition rate. The reflectivity is monitored to determine the time period in which the reflectivity reaches a maximum or minimum value, which occurs when the layer is a quarter wave thick. The deposition rate is derived from that time period, and the deposition is continued for a time in accordance with the deposition rate until the requisite thickness of the first dielectric layer is obtained. The second dielectric layer is deposited for a lesser time period in accordance with the deposition rate which has been optically derived during deposition of the first dielectric layer.Type: GrantFiled: October 18, 1990Date of Patent: September 29, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsumi Kawahara, Masami Uchida, Kazumi Yoshioka, Takeo Ohta, Keiichiro Horai