| Patent | Date |
|---|
Control circuit of power supply unit, power supply unit and control method thereof
Grant 8,368,373 - Ozawa , et al. February 5, 2 | 2013-02-05 |
Control system for charging batteries and electronic apparatus using same
Grant RE43,911 - Matsuda , et al. January 8, 2 | 2013-01-08 |
Power supply circuit, power supply control circuit, and power supply control method
Grant 7,960,946 - Ozawa , et al. June 14, 2 | 2011-06-14 |
DC-DC converter with a plurality of soft-start control circuits
Grant 7,957,165 - Hasegawa , et al. June 7, 2 | 2011-06-07 |
Control circuit of synchronous rectification type power supply unit, synchronous rectification type power supply unit and control method thereof
Grant 7,948,219 - Hasegawa , et al. May 24, 2 | 2011-05-24 |
Control circuit of power supply unit which controls output power of external power supply based upon current from the external power supply, power supply unit and control method thereof
Grant 7,944,190 - Ozawa , et al. May 17, 2 | 2011-05-17 |
Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages
Grant 7,928,601 - Ozawa , et al. April 19, 2 | 2011-04-19 |
Control system for charging batteries and electronic apparatus using same
Grant RE42,114 - Matsuda , et al. February 8, 2 | 2011-02-08 |
Control circuit of power supply, power supply and control method thereof
Grant 7,781,909 - Ozawa , et al. August 24, 2 | 2010-08-24 |
Power source control circuit, power supply device, and control method for the same
Grant 7,719,136 - Nakamura , et al. May 18, 2 | 2010-05-18 |
DC-DC converter control circuit, DC-DC converter, power supply unit, and DC-DC converter control method
Grant 7,705,483 - Ozawa , et al. April 27, 2 | 2010-04-27 |
Charge control that keeps constant input voltage supplied to battery pack
Grant 7,701,178 - Tsukamoto , et al. April 20, 2 | 2010-04-20 |
Electronic device incorporating system power supply unit and method for supplying power supply voltage
Grant 7,679,214 - Nakamura , et al. March 16, 2 | 2010-03-16 |
Control circuit of power supply and control method of the power supply
Grant 7,675,267 - Ozawa , et al. March 9, 2 | 2010-03-09 |
Circuit and method for controlling DC-DC converter
Grant 7,663,345 - Ozawa , et al. February 16, 2 | 2010-02-16 |
DC linear regulator single controller with plural loads
Grant 7,545,054 - Ozawa , et al. June 9, 2 | 2009-06-09 |
Power supply control method, current-to-voltage conversion circuit and electronic apparatus
Grant 7,489,528 - Tanaka , et al. February 10, 2 | 2009-02-10 |
DC-DC converter and its control method, and switching regulator and its control method
Grant 7,423,415 - Hasegawa , et al. September 9, 2 | 2008-09-09 |
Dc-dc Conversion Circuit, Dc-dc Conversion Control Circuit, And Dc-dc Conversion Control Method
App 20080197821 - Hasegawa; Morihito ; et al. | 2008-08-21 |
Power Supply Circuit, Power Supply Control Circuit, And Power Supply Control Method
App 20080197814 - Ozawa; Hidekiyo ; et al. | 2008-08-21 |
Control circuit of synchronous rectification type power supply unit, synchronous rectification type power supply unit and control method thereof
App 20080079408 - Hasegawa; Morihito ; et al. | 2008-04-03 |
Control circuit of power supply unit, power supply unit and control method thereof
App 20080052550 - Ozawa; Hidekiyo ; et al. | 2008-02-28 |
Step-up (boost) DC regulator with two-level back-bias switch gate voltage
Grant 7,298,117 - Hasegawa , et al. November 20, 2 | 2007-11-20 |
Control circuit of power supply unit, power supply unit and control method thereof
App 20070242557 - Ozawa; Hidekiyo ; et al. | 2007-10-18 |
DC-DC converter and method of controlling DC-DC converter
Grant 7,279,870 - Hasegawa , et al. October 9, 2 | 2007-10-09 |
Control circuit of power supply and control method of the power supply
App 20070229036 - Ozawa; Hidekiyo ; et al. | 2007-10-04 |
Electronic device incorporating system power supply unit and method for supplying power supply voltage
App 20070226524 - Nakamura; Toru ; et al. | 2007-09-27 |
Control circuit of power supply, power supply and control method thereof
App 20070217108 - Ozawa; Hidekiyo ; et al. | 2007-09-20 |
Circuit and method for controlling DC-DC converter
App 20070216378 - Ozawa; Hidekiyo ; et al. | 2007-09-20 |
DC-DC converter control circuit, DC-DC converter, power supply unit, and DC-DC converter control method
App 20070210649 - Ozawa; Hidekiyo ; et al. | 2007-09-13 |
Power source control circuit, power supply device, and control method for the same
App 20070205662 - Nakamura; Toru ; et al. | 2007-09-06 |
Control circuit for power supply device, power supply device, and control method thereof
App 20070201294 - Ozawa; Hidekiyo ; et al. | 2007-08-30 |
DC-DC converter control circuit, DC-DC converter, and DC-DC converter control method
App 20070194766 - Ozawa; Hidekiyo ; et al. | 2007-08-23 |
Step-up type DC-DC converter and method for controlling step-up type DC-DC converter
App 20070132435 - Hasegawa; Morihito ; et al. | 2007-06-14 |
Control circuit for DC-DC converter in semiconductor integrated circuit device
Grant 7,221,131 - Ozawa , et al. May 22, 2 | 2007-05-22 |
DC-DC converter and method for controlling DC-DC converter
App 20070090819 - Hasegawa; Morihito ; et al. | 2007-04-26 |
DC-DC converter and its control method, and switching regulator and its control method
App 20070052398 - Hasegawa; Morihito ; et al. | 2007-03-08 |
DC-DC converter circuit, power supply selection circuit, and apparatus useful for increasing conversion efficiency
Grant 7,148,587 - Matsuda , et al. December 12, 2 | 2006-12-12 |
DC to DC converter producing output voltage exhibit rise and fall characteristics independent of load thereon
Grant 7,129,682 - Saeki , et al. October 31, 2 | 2006-10-31 |
Multi-phase DC-DC converter and control circuit for multi-phase DC-DC converter
Grant 7,122,995 - Hasegawa , et al. October 17, 2 | 2006-10-17 |
A/D converter, D/A converter and voltage source
Grant 7,116,258 - Arimura , et al. October 3, 2 | 2006-10-03 |
DC-DC converter and method for controlling DC-DC converter
Grant 7,098,639 - Natsume , et al. August 29, 2 | 2006-08-29 |
A/d Converter, D/a Converter And Voltage Source
App 20060176204 - Arimura; Kazuyoshi ; et al. | 2006-08-10 |
Multi-phase DC-DC converter and control circuit for multi-phase DC-DC converter
App 20060164050 - Hasegawa; Morihito ; et al. | 2006-07-27 |
A/D converter, D/A converter and voltage source
Grant 7,075,463 - Arimura , et al. July 11, 2 | 2006-07-11 |
Control circuit for DC-DC converter in semiconductor integrated circuit device
App 20060139820 - Ozawa; Hidekiyo ; et al. | 2006-06-29 |
Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages
App 20060139828 - Ozawa; Hidekiyo ; et al. | 2006-06-29 |
Portable device having a charging circuit and semiconductor device for use in the charging circuit of the same
Grant 7,045,990 - Takimoto , et al. May 16, 2 | 2006-05-16 |
DC/DC converter
Grant 7,019,501 - Dogome , et al. March 28, 2 | 2006-03-28 |
Protection method, control circuit, and battery unit
App 20060049804 - Saeki; Mitsuo ; et al. | 2006-03-09 |
Semiconductor device, printed-circuit board and electronics device
App 20060033537 - Ito; Hidenobu ; et al. | 2006-02-16 |
Protection method, control circuit, and battery unit
Grant 6,989,652 - Saeki , et al. January 24, 2 | 2006-01-24 |
Charge control that keeps constant input voltage supplied to battery pack
App 20050275379 - Tsukamoto, Masaya ; et al. | 2005-12-15 |
DC to DC converter producing output voltage exhibit rise and fall characteristics independent of load thereon
App 20050264270 - Saeki, Mitsuo ; et al. | 2005-12-01 |
A/D converter, D/A converter and voltage source
App 20050258995 - Arimura, Kazuyoshi ; et al. | 2005-11-24 |
Power supply control method
Grant 6,940,737 - Nakazawa , et al. September 6, 2 | 2005-09-06 |
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
Grant 6,911,806 - Saeki , et al. June 28, 2 | 2005-06-28 |
Method for predicting remaining charge of portable electronics battery
Grant 6,897,635 - Ozawa , et al. May 24, 2 | 2005-05-24 |
DC/DC converter
App 20050030777 - Dogome, Hirofumi ; et al. | 2005-02-10 |
Portable device and semiconductor device
App 20050017676 - Takimoto, Kyuichi ; et al. | 2005-01-27 |
DC to DC converter producing output voltage exhibit rise and fall charactristics independet of load thereon
App 20040135559 - Saeki, Mitsuo ; et al. | 2004-07-15 |
Power supply and control circuit that adjusts output power based on variable input power and power supply control method for controlling output power based on variable input power
App 20040105281 - Nakazawa, Shigeaki ; et al. | 2004-06-03 |
Power supply control method, current-to-voltage conversion circuit and electronic apparatus
App 20040105285 - Tanaka, Shigeo ; et al. | 2004-06-03 |
DC-DC converter and method for controlling DC-DC converter
App 20040100240 - Natsume, Masahiro ; et al. | 2004-05-27 |
Power Supply Control Device, Power Supply Circuit, Power Supply Control Method, And Electronic Apparatus Controlling Output Voltage Thereof In Accordance With A Voltage Detected Across An On Switching Element
Grant 6,724,175 - Matsuda , et al. April 20, 2 | 2004-04-20 |
Charging control circuit, charger, power supply circuit, information processing device, and battery pack
App 20040004458 - Tanaka, Shigeo ; et al. | 2004-01-08 |
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
Grant 6,664,772 - Saeki , et al. December 16, 2 | 2003-12-16 |
Portable apparatus
Grant 6,657,415 - Saeki , et al. December 2, 2 | 2003-12-02 |
Power supply control circuit that adjusts output power based on variable input power
Grant 6,639,812 - Nakazawa , et al. October 28, 2 | 2003-10-28 |
Method for predicting remaining charge of portable electronics battery
App 20030193318 - Ozawa, Hidekiyo ; et al. | 2003-10-16 |
DC-DC converter circuit, power supply selection circuit, and apparatus useful for increasing conversion efficiency
App 20030168916 - Matsuda, Kouichi ; et al. | 2003-09-11 |
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
App 20030107355 - Saeki, Mitsuo ; et al. | 2003-06-12 |
DC-DC converter circuit, power supply selection circuit, and apparatus
Grant 6,566,766 - Matsuda , et al. May 20, 2 | 2003-05-20 |
Protection method, control circuit, and battery unit
App 20030030413 - Saeki, Mitsuo ; et al. | 2003-02-13 |
Electronic equipment and battery unit
Grant 6,498,459 - Okumura , et al. December 24, 2 | 2002-12-24 |
Protection method, control circuit, and battery unit
App 20020190694 - Saeki, Mitsuo ; et al. | 2002-12-19 |
Protection method, control circuit, and battery unit
Grant 6,492,791 - Saeki , et al. December 10, 2 | 2002-12-10 |
Monitor signal output circuit, battery pack, battery voltage monitor circuit, battery system, apparatus, battery voltage monitor method, and battery voltage monitor program storage medium
Grant 6,486,635 - Matsuda , et al. November 26, 2 | 2002-11-26 |
Battery charge control circuit, battery charging device, and battery charge control method
Grant 6,452,364 - Saeki , et al. September 17, 2 | 2002-09-17 |
Hand-held information processing apparatus, charging apparatus and method
App 20020097022 - Saeki, Mitsuo ; et al. | 2002-07-25 |
DC-DC converter circuit, power supply selection circuit, and apparatus
App 20020093317 - Matsuda, Kouichi ; et al. | 2002-07-18 |
DC-to-DC converter circuit having a power saving mode
Grant 6,420,858 - Kitagawa , et al. July 16, 2 | 2002-07-16 |
Power unit
Grant 6,414,403 - Kitagawa , et al. July 2, 2 | 2002-07-02 |
DC-DC converter circuit selecting lowest acceptable input source
Grant 6,404,076 - Matsuda , et al. June 11, 2 | 2002-06-11 |
Power supply control circuit, power supply and power supply control method
App 20020027786 - Nakazawa, Shigeaki ; et al. | 2002-03-07 |
Power control method and circuit, and power supply unit
App 20020015316 - Nakazawa, Shigeaki ; et al. | 2002-02-07 |
Pseudo battery pack, battery pack, electronic apparatus, and electronic apparatus system
App 20010035735 - Fukuoka, Kazuhito ; et al. | 2001-11-01 |
Power Unit
App 20010020802 - KITAGAWA, SEIYA ; et al. | 2001-09-13 |
Battery unit and information processing system having battery unit mounted therein
Grant 6,262,494 - Tsukuni , et al. July 17, 2 | 2001-07-17 |
Controller for DC-DC converter
Grant 6,194,875 - Takimoto , et al. February 27, 2 | 2001-02-27 |
Protection circuit and battery unit
Grant 6,051,955 - Saeki , et al. April 18, 2 | 2000-04-18 |
DC-to-DC converter capable of preventing overvoltage
Grant 6,046,896 - Saeki , et al. April 4, 2 | 2000-04-04 |
DC-to-DC converter capable of preventing overvoltages
Grant 6,028,755 - Saeki , et al. February 22, 2 | 2000-02-22 |
Battery capacity predicting method, battery unit and apparatus using battery unit
Grant 6,020,718 - Ozawa , et al. February 1, 2 | 2000-02-01 |
Charging-and-discharging device for an electronic apparatus, and an electronic apparatus including the same, utilizing a charging device providing a constant charging current
Grant 6,008,629 - Saeki , et al. December 28, 1 | 1999-12-28 |
Power supply apparatus for supplying power from a plurality of batteries to a plurality of loads, and electronic appliance using the power supply apparatus
Grant 5,959,368 - Kubo , et al. September 28, 1 | 1999-09-28 |
Charging-and-discharging device, constant-voltage and constant-current control circuit, and electronic device
Grant 5,905,361 - Saeki , et al. May 18, 1 | 1999-05-18 |
Charging-and-discharging device, battery pack and electronic apparatus including them
Grant 5,808,444 - Saeki , et al. September 15, 1 | 1998-09-15 |
Charging-and-discharging control device, a battery pack, and an electronic apparatus with improved charge and discarge control
Grant 5,801,514 - Saeki , et al. September 1, 1 | 1998-09-01 |
Power control unit loading test method
Grant 5,781,000 - Saeki , et al. July 14, 1 | 1998-07-14 |
Control system for charging batteries and electronic apparatus using same
Grant 5,739,667 - Matsuda , et al. April 14, 1 | 1998-04-14 |
Step-down type DC-DC regulator
Grant 5,717,318 - Matsuda , et al. February 10, 1 | 1998-02-10 |
Power supply apparatus and electronic appliance equipped with the power supply apparatus
Grant 5,717,256 - Okumura , et al. February 10, 1 | 1998-02-10 |
Power supply apparatus for efficiently utilizing battery and electronic apparatus using the power supply
Grant 5,610,450 - Saeki , et al. March 11, 1 | 1997-03-11 |
Power supply unit
Grant 5,572,112 - Saeki , et al. November 5, 1 | 1996-11-05 |
Power source system of portable information processing system using battery
Grant 5,563,493 - Matsuda , et al. October 8, 1 | 1996-10-08 |
Scan-out system
Grant 4,491,935 - Ozawa , et al. January 1, 1 | 1985-01-01 |
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