Patents by Inventor Hiraku Akiho
Hiraku Akiho 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).
-
Publication number: 20090167624Abstract: This invention provides an antenna apparatus (60) for use in a non-contact type IC card into and from which data can be written and read by electronic apparatuses having a communication function, by virtue of inductive coupling. The antenna apparatus comprises a loop coil (61) and a magnetic member (62). The loop coil is produced by winding a conductive wire in a plane and configured to perform the inductive coupling. The magnetic member covers one region (61a) of the loop coil, provided at one side, from one surface of the loop coil, passes through the loop coil, and covers the other region (61b) of the loop coil, provided at the other side, from the other surface of the loop coil. The entire region of the loop coil is thus covered.Type: ApplicationFiled: February 6, 2009Publication date: July 2, 2009Applicants: SONY CHEMICAL &INFORMATION DEVICE CORPORATION, SONY CORPORATIONInventors: KEISUKE ARAMAKI, SATORU SUGITA, HIRAKU AKIHO
-
Publication number: 20090146898Abstract: There are provided an antenna module-use magnetic core member, an antenna module and a portable information terminal provided with the same, capable of improving a communication distance without increasing a module thickness. In an antenna module (1) in which a sheet-formed magnetic core member (4) is stacked on an antenna substrate (2) on which a looped antenna is formed, one having a performance index, expressed by ??×Q, of 300 or higher when Q is a reciprocal of a loss factor (tan ?=??/??) expressed by a real part ?? and an imaginary part ?? of a complex permeability at an applied frequency is used as the magnetic core member (4).Type: ApplicationFiled: April 25, 2005Publication date: June 11, 2009Applicant: SONY CORPORATIONInventors: Hiraku Akiho, Isao Takahashi, Toshiaki Sugawara, Toshiaki Yokota
-
Publication number: 20090085820Abstract: A magnetic material used for an antenna module of an RFID (radio frequency identification) system that uses a communication frequency of 13.56 MHz, includes an Fe alloy magnetic material containing Fe as a primary component, and Si and Al added thereto, and phosphorous of 0.2 to 0.5 wt % added to the Fe alloy magnetic material.Type: ApplicationFiled: August 20, 2008Publication date: April 2, 2009Applicant: SONY CORPORATIONInventor: Hiraku Akiho
-
Patent number: 7503509Abstract: This invention provides an antenna apparatus (60) for use in a non-contact type IC card into and from which data can be written and read by electronic apparatuses having a communication function, by virtue of inductive coupling. The antenna apparatus comprises a loop coil (61) and a magnetic member (62). The loop coil is produced by winding a conductive wire in a plane and configured to perform the inductive coupling. The magnetic member covers one region (61a) of the loop coil, provided at one side, from one surface of the loop coil, passes through the loop coil, and covers the other region (61b) of the loop coil, provided at the other side, from the other surface of the loop coil. The entire region of the loop coil is thus covered.Type: GrantFiled: June 15, 2006Date of Patent: March 17, 2009Assignees: Sony Chemical & Information Device Corp., Sony CorporationInventors: Keisuke Aramaki, Satoru Sugita, Hiraku Akiho
-
Patent number: 7405709Abstract: A magnetic core member, an antenna module, and a portable communication terminal having this, which have a configuration capable of satisfying enhancement of communication characteristics of antenna coils as well as their sufficient electromagnetic shielding function from a shield plate. A magnetic core member (4) is disposed between an antenna substrate having antenna coils (11), (12) formed therein and a conductive shield plate (3), and is formed by filling an insulating material (30) with a magnetic powder (31). The magnetic core member (4) has a two-layered structure including a first layer (4A) and a second layer (4B), thereby making a filling rate of the magnetic powder (31) in the first layer (4A) be lower than that of the magnetic powder (31) in the second layer (4B) so that a first surface (4a) on a side opposed to the antenna substrate (2) and a second surface (4b) on a side opposed to the shield plate (3) have magnetic properties different from each other.Type: GrantFiled: August 27, 2004Date of Patent: July 29, 2008Assignee: Sony CorporationInventors: Isao Takahashi, Kazuo Nozawa, Hiraku Akiho
-
Publication number: 20070205291Abstract: This invention provides an antenna apparatus (60) for use in a non-contact type IC card into and from which data can be written and read by electronic apparatuses having a communication function, by virtue of inductive coupling. The antenna apparatus comprises a loop coil (61) and a magnetic member (62). The loop coil is produced by winding a conductive wire in a plane and configured to perform the inductive coupling. The magnetic member covers one region (61a) of the loop coil, provided at one side, from one surface of the loop coil, passes through the loop coil, and covers the other region (61b) of the loop coil, provided at the other side, from the other surface of the loop coil. The entire region of the loop coil is thus covered.Type: ApplicationFiled: June 15, 2006Publication date: September 6, 2007Inventors: Keisuke Aramaki, Satoru Sugita, Hiraku Akiho
-
Patent number: 7261240Abstract: A portable type information processing terminal device is provided which includes a substrate carrying a substantially annular antenna coil thereon, a signal processing integrated circuit element arranged inside the antenna coil, a magnetic plate arranged under the substrate and a metal plate arranged under the magnetic plate, which are integrally formed and arranged on one or more than one metal parts including a battery pack. The metal plate is used to substantially regulate the resonance frequency of the antenna coil so that it is allowed to be arranged in a cabinet of the portable device.Type: GrantFiled: January 25, 2005Date of Patent: August 28, 2007Assignee: Sony CorporationInventors: Hiraku Akiho, Akihiro Kikuchi, Kazuo Nozawa, Masato Ishigaki, Isao Takahashi, Junichi Sawada
-
Publication number: 20070095913Abstract: An antenna module and a portable communication terminal equipped with the antenna module are provided. The antenna module has a space-saving design, and also has both a capability for long communication distance for a tag function and a capability for wide communication range for a reader/writer function. A first antenna coil (11) for communication with a reader/writer and a second antenna coil (12) for communication with an IC tag are disposed on a base substrate (10). The first antenna coil (11) is disposed in an outermost periphery section of the base substrate (10) so that a communication distance is attained. The second antenna coil (12) is disposed within an inner periphery of the first antenna coil (11) so as to achieve overall size reduction of the module.Type: ApplicationFiled: June 4, 2004Publication date: May 3, 2007Inventors: Isao Takahashi, Hiraku Akiho
-
Patent number: 7198198Abstract: An antenna device (60) is provided that is used in a recorder and/or writer destined for writing and reading data to and from a contactless IC card (1). The antenna device (60) includes a loop coil (61) that radiates a magnetic field, magnetically couples with a loop coil (4) provided in the IC card (1), and sends and receives data to and from the IC card (1). The loop coil (61) is formed asymmetric for the winding sections thereof opposite to each other across the center of the loop coil (61) to be different in interval from each other.Type: GrantFiled: August 28, 2003Date of Patent: April 3, 2007Assignee: Sony CorporationInventors: Hiraku Akiho, Yutaka Okazaki, Akihiro Kikuchi, Kazuo Goto, Kazuhiko Urayama
-
Publication number: 20070069961Abstract: There are provided a magnetic core member for an antenna module capable of improving a communication distance without thickening the module, an antenna module, and a portable information terminal equipped with the antenna module. A magnetic core member 18 for an antenna module 10 of the present invention has a ring groove 18c as a recess portion formed on the surface on the side stacking an antenna coil 15 in an area facing a loop portion of the antenna coil 15. An eddy current generated in the magnetic core member 18 in a high frequency magnetic field is concentrated on the surface of the magnetic core member 18 on the side stacking the antenna coil 15 in the area facing the loop portion of the antenna coil 15. According to the present invention, a ring groove 18c is provided in the area to reduce an amount of eddy currents to be generated and improve the communication distance characteristics of the antenna module.Type: ApplicationFiled: July 19, 2005Publication date: March 29, 2007Applicant: SONY CORPORATIONInventors: Hiraku Akiho, Hiroyuki Ryoson, Kazuo Goto
-
Patent number: 7183987Abstract: An antenna apparatus (60) is provided which is used in a recorder and/or player to write and read data to and from a contactless IC card (1). The antenna apparatus (60) includes a loop coil (61) to radiate an electromagnetic field for magnetic coupling with a loop coil (4) at the IC card (1) to send and receive data to and from the IC card (1), and a magnetic sheet (62) disposed to face the main side of the loop coil (61), opposite to the main side facing the IC card (1). The magnetic sheet (62) has the specific permeability ?? and product Ms·t of saturation magnetization Ms and thickness t thereof set in accordance with a necessary range of communications with the contactless IC card (1).Type: GrantFiled: October 6, 2005Date of Patent: February 27, 2007Assignee: Sony CorporationInventors: Hiraku Akiho, Yutaka Okazaki, Kazuo Goto, Akihiro Kikuchi
-
Publication number: 20070001921Abstract: A magnetic core member, an antenna module, and a portable communication terminal having this, which have a configuration capable of satisfying enhancement of communication characteristics of antenna coils as well as their sufficient electromagnetic shielding function from a shield plate. A magnetic core member (4) is disposed between an antenna substrate having antenna coils (11), (12) formed therein and a conductive shield plate (3), and is formed by filling an insulating material (30) with a magnetic powder (31). The magnetic core member (4) has a two-layered structure including a first layer (4A) and a second layer (4B), thereby making a filling rate of the magnetic powder (31) in the first layer (4A) be lower than that of the magnetic powder (31) in the second layer (4B) so that a first surface (4a) on a side opposed to the antenna substrate (2) and a second surface (4b) on a side opposed to the shield plate (3) have magnetic properties different from each other.Type: ApplicationFiled: August 27, 2004Publication date: January 4, 2007Applicant: Sony CorporationInventors: Isao Takahashi, Kazuo Nozawa, Hiraku Akiho
-
Patent number: 7050007Abstract: A communication-capable electronic device is provided which includes a metallic housing (122) to accommodate electronic parts of the device, and a communication terminal (90) that makes communications with a communication-cable IC card (110) incorporating an antenna (115). The communication antenna (90) is located such that when the IC card is placed near the housing (122), the antenna (115) built in the IC card (110) faces, at a part thereof, a part of the communication terminal (90) while the rest of the antenna (115) of the IC Card (110) does not face the housing (122). Thus, it is possible to prevent the inductance in the antenna (115) of the IC card (110) from being reduced.Type: GrantFiled: September 5, 2003Date of Patent: May 23, 2006Assignee: Sony CorporationInventors: Hiraku Akiho, Yutaka Okazaki, Kazuo Goto, Akihiro Kikuchi, Junichi Sawada
-
Patent number: 7000837Abstract: An antenna apparatus (60) is provided which is used in a recorder and/or player to write and read data to and from a contactless IC card (1). The antenna apparatus (60) includes a loop coil (61) to radiate an electromagnetic field for magnetic coupling with a loop coil (4) at the IC card (1) to send and receive data to and from the IC card (1), and a magnetic sheet (62) disposed to face the main side of the loop coil (61), opposite to the main side facing the IC card (1). The magnetic sheet (62) has the specific permeability ?? and product Ms·t of saturation magnetization Ms and thickness t thereof set in accordance with a necessary range of communications with the contactless IC card (1).Type: GrantFiled: August 28, 2003Date of Patent: February 21, 2006Assignee: Sony CorporationInventors: Hiraku Akiho, Yutaka Okazaki, Kazuo Goto, Akihiro Kikuchi
-
Publication number: 20060028384Abstract: An antenna apparatus (60) is provided which is used in a recorder and/or player to write and read data to and from a contactless IC card (1). The antenna apparatus (60) includes a loop coil (61) to radiate an electromagnetic field for magnetic coupling with a loop coil (4) at the IC card (1) to send and receive data to and from the IC card (1), and a magnetic sheet (62) disposed to face the main side of the loop coil (61), opposite to the main side facing the IC card (1). The magnetic sheet (62) has the specific permeability ?? and product Ms·t of saturation magnetization Ms and thickness t thereof set in accordance with a necessary range of communications with the contactless IC card (1).Type: ApplicationFiled: October 6, 2005Publication date: February 9, 2006Applicant: Sony CorporationInventors: Hiraku Akiho, Yutaka Okazaki, Kazuo Goto, Akihiro Kikuchi
-
Publication number: 20050178835Abstract: A portable type information processing terminal device is provided which includes a substrate carrying a substantially annular antenna coil thereon, a signal processing integrated circuit element arranged inside the antenna coil, a magnetic plate arranged under the substrate and a metal plate arranged under the magnetic plate, which are integrally formed and arranged on one or more than one metal parts including a battery pack. The metal plate is used to substantially regulate the resonance frequency of the antenna coil so that it is allowed to be arranged in a cabinet of the portable device.Type: ApplicationFiled: January 25, 2005Publication date: August 18, 2005Inventors: Hiraku Akiho, Akihiro Kikuchi, Kazuo Nozawa, Masato Ishigaki, Isao Takahashi, Junichi Sawada
-
Publication number: 20050040997Abstract: A communication-capable electronic device is provided which includes a metallic housing (122) to accommodate electronic parts of the device, and a communication terminal (90) that makes communications with a communication-cable IC card (110) incorporating an antenna (115). The communication antenna (90) is located such that when the IC card is placed near the housing (122), the antenna (115) built in the IC card (110) faces, at a part thereof, a part of the communication terminal (90) while the rest of the antenna (115) of the IC Card (110) does not face the housing (122). Thus, it is possible to prevent the inductance in the antenna (115) of the IC card (110) from being reduced.Type: ApplicationFiled: September 5, 2003Publication date: February 24, 2005Inventors: Hiraku Akiho, Yutaka Okazaki, Kazuo Goto, Akihiro Kikuchi, Junichi Sawada
-
Publication number: 20050001031Abstract: An antenna apparatus (60) is provided which is used in a recorder and/or player to write and read data to and from a contactless IC card (1). The antenna apparatus (60) includes a loop coil (61) to radiate an electromagnetic field for magnetic coupling with a loop coil (4) at the IC card (1) to send and receive data to and from the IC card (1), and a magnetic sheet (62) disposed to face the main side of the loop coil (61), opposite to the main side facing the IC card (1). The magnetic sheet (62) has the specific permeability ?? and product Ms.t of saturation magnetization Ms and thickness t thereof set in accordance with a necessary range of communications with the contactless IC card (1).Type: ApplicationFiled: August 28, 2003Publication date: January 6, 2005Inventors: Hiraku Akiho, Yutaka Okazaki, Kazuo Goto, Akihiro Kikuchi
-
Publication number: 20040256468Abstract: An antenna device (60) is provided that is used in a recorder and/or writer destined for writing and reading data to and from a contactless IC card (1). The antenna device (60) includes a loop coil (61) that radiates a magnetic field, magnetically couples with a loop coil (4) provided in the IC card (1), and sends and receives data to and from the IC card (1). The loop coil (61) is formed asymmetric for the winding sections thereof opposite to each other across the center of the loop coil (61) to be different in interval from each other.Type: ApplicationFiled: May 24, 2004Publication date: December 23, 2004Inventors: Hiraku Akiho, Yutaka Okazaki, Akihiro Kikuchi, Kazuo Goto, Kazuhiko Urayama
-
Patent number: 6388839Abstract: This invention relates to a magnetic head device and a disk drive, which are suitable for application to a mass-storage floppy disk drive. A first and second rails are provided on the disk side in projected form on a slider of each of magnetic head elements 20 so as to extend in a tangential direction R of a track of the disk and be parallel with each other. A head chip for recording and reproducing data in a state of being in contact with a recording surface of the disk and in a standard recording density is provided substantially in the central position of the first rail. Another head chip for recording and reproducing data in a state of being levitated from the recording surface of the disk and in a high recording density is provided in a position on the rear side of the second rail 26b with respect to the tangential direction R of the track. A width of the first rail of each magnetic head element is narrower than a width of the second rail thereof.Type: GrantFiled: June 22, 2001Date of Patent: May 14, 2002Assignee: Sony CorporationInventors: Yutaka Souda, Hiraku Akiho, Wataru Ito