Patents by Inventor Suguru Kojima

Suguru Kojima 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: 20210150505
    Abstract: A reading system includes an evaluation value acquirer and a determining processor. The evaluation value acquirer is configured to acquire, with regard to a reading device configured to perform wireless communication with an electronic tag attached to each of one or more items by using a radio wave as a medium to read item information on each of one or more items, an evaluation value about at least one of: the number of times; a time interval; or a frequency, of reading the item information for each of at the one or more items. The determining processor is configured to determine, for each of the one or more items, whether or not each of the one or more items is an object to be read based on a change in the evaluation value over time.
    Type: Application
    Filed: July 29, 2019
    Publication date: May 20, 2021
    Inventors: Masahiro KUMAGAWA, Kazuhiko YAHATA, Suguru KOJIMA, Masahiro NAKANO, Shinsuke OGATA, Koji IMAMURA
  • Publication number: 20210124529
    Abstract: A memory system includes a memory device having a memory cell array, and a controller. The memory cell array includes a plurality of first units and at least one second unit. The second unit includes the plurality of first units. The controller counts a first number of times of read operation for each of the plurality of first units, and, in response to the first number of times for one first unit among the plurality of first units reaching a first value, updates a second number of times for the second unit that includes the one first unit. In response to the second number of times reaching a second value, the controller determines whether to rewrite data stored in at least one of the first units included in the second unit.
    Type: Application
    Filed: August 25, 2020
    Publication date: April 29, 2021
    Applicant: Kioxia Corporation
    Inventors: Suguru NISHIKAWA, Yoshihisa KOJIMA, Takehiko AMAKI
  • Publication number: 20200059006
    Abstract: An antenna apparatus having directivity includes an antenna portion having a power feeding portion, a plate-like first antenna element, and a second antenna element connected to a side of the first antenna element through the power feeding portion, the second antenna element having a width smaller than that of the first antenna element; and a plate-like parasitic element disposed opposite to the antenna portion. The parasitic element has a length that is approximately one-half or more of a wavelength of an operating frequency. The second antenna element has a length that is shorter than one-fourth of the wavelength of the operating frequency. The antenna portion and the parasitic element have a distance capable of being connected electromagnetically to each other.
    Type: Application
    Filed: October 28, 2019
    Publication date: February 20, 2020
    Inventor: Suguru KOJIMA
  • Publication number: 20190362109
    Abstract: An information acquisition system includes an inner wall, an outer wall, and an antenna. The inner wall includes a reflective layer which reflects a radio wave. A reading space is located on an inner side of the reflective layer. Reading of tag information from an RF tag attached to an item is performed in the reading space. The outer wall is disposed on an opposite side of the inner wall from the reading space. The antenna is configured to output the radio wave toward the reading space in order to communicate with the RF tag. Between the inner wall and the outer wall, a peripheral space is provided. The reflective layer of the inner wall has a hole. The hole penetrates through the reflective layer in a thickness direction of the reflective layer.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 28, 2019
    Inventors: Suguru KOJIMA, Shinichi OKADA, Masahiro KUMAGAWA, Masahiro NAKANO
  • Publication number: 20190287354
    Abstract: A shopping assistance system includes a moving device (bagging device) and an information acquisition device. The moving device includes a support portion and a guide portion. The support portion is provided with a placement surface on which a product with an RF tag is placed. The guide portion includes a shielding space for shielding radio waves therein, and is disposed around the support portion along outer circumferential edges of the placement surface. The information acquisition device reads product information from the RF tag by performing wireless communication with the RF tag using an antenna when a relative positional relationship between a communication area of the antenna and the RF tag changes in the shielding space, the communication area being an area which is set around the antenna and in which wireless communication with the RF tag is performed.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 19, 2019
    Inventors: KAZUHIKO YAHATA, SUGURU KOJIMA, TAKU SUZUYAMA, SHINICHI OKADA, JUNICHI TAKAHASHI
  • Publication number: 20140184465
    Abstract: A first antenna element 102, a second antenna element 103, and a MEMS (micro-electromechanical system) switch 104 are provided, and a feeding point 110 is provided at one end of the first antenna element 102. The other end 113 of the first antenna element 102 is connected to a first terminal 106 of the MEMS switch 104, and one end 114 of the second antenna element 103 is connected to a second terminal 107 of the MEMS switch 104. The one end of the first antenna element 102 is grounded to a ground pattern 101 via an inductor 115, and a ground terminal 105 of the MEMS switch 104 is connected to the other end 113 of the first antenna element 102.
    Type: Application
    Filed: June 6, 2012
    Publication date: July 3, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroyuki Uejima, Yoshio Koyanagi, Suguru Kojima, Takanori Hirobe, Kouta Aoki, Masao Ootani
  • Publication number: 20140015729
    Abstract: A first antenna element 102, a second antenna element 103, and a MEMS (micro-electromechanical system) switch 104 are provided, and a feeding point 110 is provided at one end of the first antenna element 102. The other end 113 of the first antenna element 102 is connected to a first terminal 106 of the MEMS switch 104, and one end 114 of the second antenna element 103 is connected to a second terminal 107 of the MEMS switch 104. The one end of the first antenna element 102 is grounded to a ground pattern 101 via an inductor 115, and a ground terminal 105 of the MEMS switch 104 is connected to the other end 113 of the first antenna element 102.
    Type: Application
    Filed: June 6, 2012
    Publication date: January 16, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroyuki Uejima, Yoshio Koyanagi, Suguru Kojima, Takanori Hirobe, Kouta Aoki, Masao OotaniI
  • Patent number: 8224239
    Abstract: A transmitting/receiving circuit holds a communication at a frequency f1 by using an antenna or an antenna, and a transmitting/receiving circuit holds a communication at a frequency f2 by using an antenna. In response to a receiving signal intensity, a switching circuit connects any one of the antennas to the transmitting/receiving circuit as a selected antenna for use in communication, and connects the other antenna to a terminating circuit as a non-selected antenna. The terminating circuit connected to the non-selected antenna has an impedance that satisfies a predetermined phase condition at the frequencies f1, f2 respectively, suppresses an inter-antenna coupling between the non-selected antenna and the selected antenna and the antenna, and suppresses degradation in antenna characteristic caused due to the inter-antenna coupling between the selected antenna and the antenna.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: July 17, 2012
    Assignee: Panasonic Corporation
    Inventor: Suguru Kojima
  • Publication number: 20100003941
    Abstract: A transmitting/receiving circuit (17) holds a communication at a frequency f1 by using an antenna (11a) or an antenna (11b), and a transmitting/receiving circuit (3) holds a communication at a frequency f2 by using an antenna (1). In response to a receiving signal intensity, a switching circuit (14) connects any one of the antennas (11a),(11b) to the transmitting/receiving circuit (17) as a selected antenna for use in communication, and connects the other antenna to a terminating circuit (13) as a non-selected antenna. The terminating circuit (13) connected to the non-selected antenna has an impedance that satisfies a predetermined phase condition at the frequencies f1, f2 respectively, suppresses an inter-antenna coupling between the non-selected antenna and the selected antenna and the antenna (1), and suppresses degradation in antenna characteristic caused due to the inter-antenna coupling between the selected antenna and the antenna (1).
    Type: Application
    Filed: July 21, 2006
    Publication date: January 7, 2010
    Applicant: Panasonic Corporation
    Inventor: Suguru Kojima
  • Publication number: 20050104783
    Abstract: A mobile radio apparatus antenna for improving the gain and widening the band is provided. A inverted-L antenna (10) is a feed element with one end thereof electrically connected to one plate surface of a circuit board (12) through a feed point. The circuit board (12) is a circuit board of a mobile radio apparatus, to which the circuit parts including the inverted-L antenna (10) are connected. A planar antenna (14) is provided facing the backside plate surface of the plate surface of the circuit board (12), to which the inverted-L antenna (10) is connected, and is a parasitic element with an electrical length in the length direction set to approximately ½ of the wavelength of radio waves communicated by the mobile radio apparatus.
    Type: Application
    Filed: June 18, 2003
    Publication date: May 19, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventor: Suguru Kojima
  • Patent number: 6781556
    Abstract: A built-in antenna device that broadens bandwidth and that realizes further miniaturization and thin-modeling without making a device itself a flat shape, while still enhancing gain and reducing SAR (specific Absorption Rate). The self impedance of dipole antenna 12, the self impedance of parasitic element 14, and the mutual impedance between dipole antenna 12 and parasitic element 14 change as the length and girth of dipole antenna 12 and parasitic element 14, and the distance therebetween are adjusted to predetermined levels, so as to broaden bandwidth by changing the input impedance of built-in antenna 10.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: August 24, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Suguru Kojima, Hideo Ito
  • Publication number: 20040021608
    Abstract: A built-in antenna device that broadens bandwidth and that realizes further miniaturization and thin-modeling without making a device itself a flat shape, while still enhancing gain and reducing SAR (specific Absorption Rate). The self impedance of dipole antenna 12, the self impedance of parasitic element 14, and the mutual impedance between dipole antenna 12 and parasitic element 14 change as the length and girth of dipole antenna 12 and parasitic element 14, and the distance therebetween are adjusted to predetermined levels, so as to broaden bandwidth by changing the input impedance of built-in antenna 10.
    Type: Application
    Filed: March 17, 2003
    Publication date: February 5, 2004
    Inventors: Suguru Kojima, Hideo Ito
  • Publication number: 20020105471
    Abstract: A directionality switching antenna apparatus of the present invention is provided with radiator 102 in folded form, folded at a length of predetermined length from a feeding point of ground plane 101, with one end thereof connected to the feeding and with the other end thereof shorted with ground plane 101, a plurality of parasitic elements 103 spaced in the vicinity of radiator 102 each with an element length set to provide the parasitic elements with an electrically symmetrical relation to the center axis of radiator 102, inductors 104 loaded on respective parasitic elements 103, diodes 105 connected to ground plane 101, switching elements 106 that connects in parallel respective inductors 104 and respective diodes 105 between respective parasitic elements 103 and ground plane 101.
    Type: Application
    Filed: January 22, 2002
    Publication date: August 8, 2002
    Inventors: Suguru Kojima, Takashi Enoki
  • Patent number: 6337668
    Abstract: The antenna apparatus of the present invention places antenna element 302 that transmits or receives electromagnetic waves on basic plate 301, places parasitic antenna elements 303 to 306 on basic plate 301 evenly spaced concentrically centered on antenna element 302, places switch elements 307 to 310 and capacitances 311 to 314 in parallel between one end of each of antenna elements 303 to 306 and said basic plate and disconnects one of switch elements 307 to 310 and connects all the others. In this way, the present invention provides a small and high-gain antenna apparatus with directivity switching capability.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: January 8, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideo Ito, Takashi Enoki, Suguru Kojima