Patents by Inventor Osamu Kawashima
Osamu Kawashima 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: 9882410Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.Type: GrantFiled: June 10, 2015Date of Patent: January 30, 2018Assignee: Toshiba Memory CorporationInventors: Erika Ikeda, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima
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Publication number: 20150280481Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.Type: ApplicationFiled: June 10, 2015Publication date: October 1, 2015Inventors: Erika Ikeda, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima
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Patent number: 9097747Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.Type: GrantFiled: November 28, 2011Date of Patent: August 4, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Erika Ikeda, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima
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Publication number: 20120161792Abstract: According to one embodiment, an electronic device includes a capacitor, a power supply device, a discharger and a capacitance detector. The capacitor is used as a backup power supply. The power supply device charges the capacitor. The discharger discharges the capacitor. The capacitance detector maintains a terminal voltage of the capacitor at a given level for a predetermined time, by controlling an operating time of the power supply device. The capacitance detector allows the discharger to start the discharge the predetermined time later. The capacitance detector detects a capacitance of the capacitor based on a transient response characteristic of the discharge.Type: ApplicationFiled: November 28, 2011Publication date: June 28, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Erika IKEDA, Hiroki Matsushita, Takehiko Katou, Osamu Kawashima
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Publication number: 20120114299Abstract: A disc reproduction apparatus of the present invention has a signal processing section which displays a pop-up menu and a user interface specific to a title being reproduced by a reproduction section, on a monitor. Upon accepting a user's operation to display the pop-up menu or the user interface, the signal processing section displays only any of the pop-up menu and the user interface on the monitor. Due to such configuration, only any of the pop-up menu and user interface specific to an HDMV mode or BD-J mode title is displayed, and thereby, wrong operations by a user are reduced.Type: ApplicationFiled: March 3, 2011Publication date: May 10, 2012Applicant: Panasonic CorporationInventors: Yoshinori Hiramatsu, Taketo Itagaki, Osamu Kawashima
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Publication number: 20070233411Abstract: In an electronic device having an interface circuit which operates using a fast clock source, frequency deviation of the clock source is inspected in the mounted state. The clock pulses of the fast clock source are counted in synchronization with an electronic device serving as reference, and the result is checked; or, alignment data of transfer data and overflow/underflow of the FIFO buffer are utilized; or, the count values of an internal counter and a fast clock counter are utilized, to check for frequency deviation of the fast clock source. In the state of being mounted in the device, tests can be performed of the clock sources of all units.Type: ApplicationFiled: July 17, 2006Publication date: October 4, 2007Applicant: FUJITSU LIMITEDInventors: Hiroyuki Suto, Masahide Kanegae, Osamu Kawashima, Michihiko Umeda
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Patent number: 7272527Abstract: In an electronic device having an interface circuit which operates using a fast clock source, frequency deviation of the clock source is inspected in the mounted state. The clock pulses of the fast clock source are counted in synchronization with an electronic device serving as reference, and the result is checked; or, alignment data of transfer data and overflow/underflow of the FIFO buffer are utilized; or, the count values of an internal counter and a fast clock counter are utilized, to check for frequency deviation of the fast clock source. In the state of being mounted in the device, tests can be performed of the clock sources of all units.Type: GrantFiled: July 17, 2006Date of Patent: September 18, 2007Assignee: Fujitsu LimitedInventors: Hiroyuki Suto, Masahide Kanegae, Osamu Kawashima, Michihiko Umeda
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Publication number: 20060224842Abstract: A nonvolatile memory, storing a plurality of access programs for accessing a storage device by the storage device connectable depending on an adopted interface, is comprised in an information processor, when power is applied to the information processor, the types of the adopted interface and connected storage devices are determined, and access programs, except for an access program corresponding to the type specified by the determination, are cleared from the nonvolatile memory. Consequently, the nonvolatile memory can prepare the appropriate access program only.Type: ApplicationFiled: June 27, 2005Publication date: October 5, 2006Inventors: Hiroyuki Suto, Hiroshi Tsurumi, Osamu Kawashima, Katsushi Ohta
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Patent number: 6466735Abstract: The car navigation file of the optical disk stores data which is used for navigating the car, and the video title set stores a plurality of video titles concerning facilities located in districts included in the map data. A VOB comprising one scene of a video image of a video title is a filmed shot in high picture quality. The VOB includes a writing command that position information of a position associated with the video information be written in the rewitable area when the predetermined operation is performed during the reproduction of the optical disk. When the disk reproduction apparatus executes the writing command, the position information can be written in the rewritable area. Consequently, the user can easily have the destination written in the optical disk, enjoying the filmed shots.Type: GrantFiled: September 16, 1998Date of Patent: October 15, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayuki Kozuka, Masataka Minami, Kazuoki Otani, Osamu Kawashima, Yoshihisa Fukushima, Yoshiho Gotoh
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Publication number: 20020064379Abstract: A reproduction apparatus for reproducing digital information recorded on an optical disc, comprises an optical pickup for reading said digital information recorded on said optical disc to have said digital information converted into electric signals, said digital information containing errors appearing when said digital information is read by said optical pickup; signal amplifying means for amplifying said electric signals converted from said digital information read by said optical pickup; signal processing means for processing said electric signals in one or more times of retry routines to correct said errors outputted as said electric signals from said signal amplifying means; a buffer memory for storing said electric signals outputted from said signal processing means; signal decoding means for decoding said electric signals stored in said buffer memory and outputted from said buffer memory; pickup driving means for driving said optical pickup to move on said optical disc, said errors being associated witType: ApplicationFiled: October 29, 2001Publication date: May 30, 2002Inventors: Osamu Kawashima, Osamu Iwabuchi, Koichi Machida
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Patent number: 4704458Abstract: Disclosed herein is an improved process for preparing 1RS-3'RS epimer of aminated phthalideisoquinolines represented by the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen atom or a lower alkoxy group, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently hydrogen atom, amino group or a lower alkoxy group with at least one of R.sup.3 -R.sup.6 being amino group, and R.sup.7 is a lower alkyl group. The improvement comprises, after having reduced a mixture of epimers of corresponding nitro compounds of the general formula (I) wherein the amino group is replaced by nitro group into the amino compounds (I), treating said amino compound at a temperature in the range of 20.degree.-100.degree. C. in an aliphatic lower alcohol in the presence of an alkali to epimerize 1RS-3'SR epimer of said amino compound into said 1RS-3'RS epimer thereof.Type: GrantFiled: January 23, 1985Date of Patent: November 3, 1987Assignee: Mitsubishi Chemical Industries LimitedInventors: Yoshiyuki Takeda, Osamu Kawashima, Shiro Furukawa, Yasukazu Ogino
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Patent number: 4684732Abstract: Disclosed herein is a process for preparing phthalide derivatives represented by the general formula (IV): ##STR1## wherein R.sup.1 to R.sup.7 are herein defined, comprising (i) reacting a nitrophthalide of the general formula (I) defined herein with an isoquinoline of the general formula (II) defined herein, and (ii) reducing the resultant phthalideisoquinoline of the general formula (III) defined herein. The process is characterized in (A) that the reaction defined in (i) is carried out in methanol, and/or (B) that the nitrophthalide of the general formula (I) is a nitrophthalide obtained by a reaction of a phthalide of the general formula (V) defined herein with copper nitrate or zinc nitrate.Type: GrantFiled: March 5, 1985Date of Patent: August 4, 1987Assignee: Mitsubishi Chemical Industries LimitedInventors: Masao Taniguchi, Yoshiharu Morita, Shuzo Hayakawa, Osamu Kawashima