Patents by Inventor Jun Asakura

Jun Asakura 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: 20100201321
    Abstract: A battery internal short-circuit detecting device has: a battery temperature detection unit for detecting a battery temperature Tr; an ambient temperature detection unit for detecting an ambient temperature Te; an average heating value detection unit for detecting an average value Pav of battery heating values per predetermined first period ?W1, which are generated by discharging or charging the battery; a battery temperature estimation unit for obtaining a battery temperature Tp estimated to be reached after a lapse of a predetermined second period ?W2 since the detection of the average value Pav of the heating values, based on the average value Pav of the heating values and the ambient temperature Te; and an internal short-circuit determination unit for determining that an internal short circuit has occurred when the actual battery temperature Tr after the lapse of the second period ?W2 is equal to or greater than the sum of the estimated battery temperature Tp and a predetermined coefficient ?.
    Type: Application
    Filed: July 23, 2008
    Publication date: August 12, 2010
    Inventors: Jun Asakura, Takuya Nakashima, Toshiyuki Nakatsuji, Masato Fujikawa
  • Publication number: 20100188050
    Abstract: A battery internal short-circuit detection apparatus includes: a voltage detection unit for detecting a terminal voltage of the battery; a current detection unit for detecting a discharging current of the battery; a voltage drop and recovery detection unit for detecting a momentary voltage drop of the battery and a recovery from the voltage drop, in response to a result of detection performed by the voltage detection unit; and a determination unit for determining that an internal short circuit has occurred, when a maximum value of the discharging current detected by the current detection unit between the voltage drop and the recovery is equal to or lower than a threshold current.
    Type: Application
    Filed: June 4, 2008
    Publication date: July 29, 2010
    Inventors: Jun Asakura, Takuya Nakashima, Toshiyuki Nakatsuji, Masato Fujikawa
  • Publication number: 20100188054
    Abstract: An internal short-circuit detecting device for detecting an internal short circuit of a battery being subjected to constant current charge using a constant current amount (I) has: a voltage detection unit for detecting a terminal voltage of the battery; a terminal voltage acquisition unit for acquiring a terminal voltage (V1), as predetermined by the voltage detection unit, at a starting point of a first period (?W1) and a terminal voltage (V2) at an ending point; a voltage increase amount calculation unit for calculating an actual increase amount (?V3) of the terminal voltage of the first period (?W1) from the terminal voltages (V1 and V2); a voltage increase amount prediction unit for calculating a predicted increase amount (?V4) of the terminal voltage for the period when charging is performed using the current amount (I) for the first period (?W1); and an internal short-circuit determination unit for determining that the internal short circuit is generated when the actual increase amount (?V3) is equal to
    Type: Application
    Filed: July 23, 2008
    Publication date: July 29, 2010
    Inventors: Jun Asakura, Takuya Nakashima, Toshiyuki Nakatsuji, Masato Fujikawa
  • Publication number: 20100156356
    Abstract: A charging current is maintained at a predetermined constant quick charging current (S1) and a full charge determination is made at a point in time (S7) when the terminal voltage (V1) (S6) reaches the charge end voltage Vf?. The charge end voltage Vf? is taken as a voltage (S5) obtained by adding a voltage drop amount VD (S4) that is obtained by multiplying an internal resistance value (S3) estimated from the temperature T (S2) of a secondary battery by a quick charging current value to a predetermined initial charge end voltage Vf. Therefore, a constant high current can be supplied from the beginning to the end and quick charging can be performed up to a full charge, while preventing overcharge, in place of the conventional CC-CV charging.
    Type: Application
    Filed: March 6, 2008
    Publication date: June 24, 2010
    Inventors: Jun Asakura, Takuma Iida, Hajime Nishino
  • Publication number: 20090213232
    Abstract: An image pickup device by which the size of a device main body can be reduced and the assembly process can be easily automated. In the image pickup device, a wiring (118) and relay terminals (115, 116, 117, 119) for electrically connecting a shutter driving section (114) with a shutter driver (112) are integrally formed with a solid wring board (101) and a lens tube (106), respectively. An electric terminal (120) of the shutter driving section (114) for driving a shutter (107), i.e. an actuator, is electrically connected with a printed board (108) through the wiring (118) of the lens tube (106) and the wiring of the solid wiring board (101). Thus, the shutter driving section (114) is electrically connected with the shutter driver (112) which controls the shutter driving section (114) mounted on the printed board (108).
    Type: Application
    Filed: March 31, 2006
    Publication date: August 27, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Jun Asakura, Kazunari Ueda, Koji Taniguchi
  • Publication number: 20080268814
    Abstract: A wireless communication device and a wireless communication method are provided that enable a reliable short-range wireless communication with a wanted wireless communication terminal without requiring a user to determine whether to permit a connection. The control units 30a and 30b of the wireless communication terminals 1a and 1b transmit the short-range wireless communication addresses thereof, respectively, while the infrared communication path being established (step S108, step S111) and the wireless communication terminals 1a and 1b receive the corresponding short-range wireless communication addresses (step S110, step S113).
    Type: Application
    Filed: April 15, 2005
    Publication date: October 30, 2008
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventor: Jun Asakura
  • Publication number: 20080197813
    Abstract: A non-aqueous electrolytic secondary battery which includes a heat-resistant layer formed by a porous protective film or the like having a resin binder and an inorganic oxide filler between its negative electrode and a positive electrode has such a characteristic that the higher the battery's temperature becomes, the smaller its internal resistance value becomes. In a CC-CV charging method as a general method for charging a secondary battery, using such a characteristic that the internal resistance value of the non-aqueous electrolytic secondary battery lowers as the battery's temperature rises, a VC-charge range where a charge is given using an optimum charging-current value at a maximum level up to which the battery's temperature does not reach an excessive temperature even if a charging current flows is provided within a CC-charge range.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 21, 2008
    Inventors: Jun ASAKURA, Hajime NISHINO, Masato FUJIKAWA
  • Publication number: 20080122399
    Abstract: A charging system is provided with a secondary battery, a charging current supplier for supplying a charging current to the secondary battery, an internal resistance detector for detecting the resistance value of the internal resistance of the secondary battery, and a charge controller for increasing the charging current to be supplied to the secondary battery by the charging current supplier as the resistance value detected by the internal resistance detector decreases.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 29, 2008
    Inventors: Hajime Nishino, Jun Asakura, Yoshio Nakatani
  • Publication number: 20070060215
    Abstract: The challenge of the invention is to prevent an unnecessary contact sound produced when a cabinet slides and moves in a mobile terminal apparatus from being output from loudspeakers, etc., of the mobile terminal apparatus and the communication machine of an intended party. A positional relation sensing section (23) of a control section (22) senses the relative position relation between first and second cabinets (30 and 31) based on output of magnetic sensing elements (20a and 20b) and outputs a position determination signal (S3). If the state is “transition state” in which one cabinet slides and moves based on the position determination signal (S3), a voice control section (24) outputs a mute control signal (S4) to a voice processing section (11) as a muting instruction.
    Type: Application
    Filed: October 15, 2004
    Publication date: March 15, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventor: Jun Asakura