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1. 发明授权

US06967469B2 Battery charging method, battery charging circuit, and portable electronic device having a battery 有权
标题翻译：电池充电方法，电池充电电路和具有电池的便携式电子装置
公开(公告)号：US06967469B2
公开(公告)日：2005-11-22
申请号：US10703639
申请日：2003-11-06
申请人： Isao Yamamoto , Tetsuro Hashimoto , Hiroyuki Ishikawa , Shigekane Matsui
发明人： Isao Yamamoto , Tetsuro Hashimoto , Hiroyuki Ishikawa , Shigekane Matsui
IPC分类号： H02J7/10 , H01M10/44 , H02J7/02 , H02J7/04 , H02J7/06 , H01M10/46
CPC分类号： H02J7/06 , H02J7/045
摘要： A battery is charged by using in series a constant-voltage DC power supply with current limit function and a constant voltage circuit which has a differential comparator circuit and whose current limit value is variable. Following a period of charging with the current of current limit value by the constant-voltage DC power supply, a period is provided in correspondence with the state of charging of the battery, for charging with a current limit value of the constant voltage circuit which is smaller than that current limit value. The detection of the charging state of the battery is effected by a comparison between a current value of a current source of a differential comparator circuit and a differential output of that differential comparator circuit. It enables to reduce electric power consumed by the control transistor of the constant voltage circuit and to reduce the allowable loss required for the control transistor.
摘要翻译：通过串联使用具有限流功能的恒压直流电源和具有差分比较器电路并且其电流限制值可变的恒压电路来对电池进行充电。在通过恒压直流电源的电流限制值的充电期间之后，与电池的充电状态相对应地设置一个周期，对于恒压电路的电流限制值进行充电小于当前极限值。通过差分比较电路的电流源的电流值与该差分比较器电路的差分输出之间的比较来实现对电池的充电状态的检测。能够降低由恒压电路的控制晶体管消耗的电力，并降低控制晶体管所需的容许损耗。

2. 发明授权

US09128160B2 Battery fuel gauge circuit 有权
标题翻译：电池电量计电路
公开(公告)号：US09128160B2
公开(公告)日：2015-09-08
申请号：US13365748
申请日：2012-02-03
申请人： Kimio Ando , Shigekane Matsui , Isao Yamamoto
发明人： Kimio Ando , Shigekane Matsui , Isao Yamamoto
IPC分类号： H02J7/00 , H04B1/38 , G01R31/36 , H01M10/42 , H04W52/02
CPC分类号： G01R31/3613 , H01M2010/4278 , H04W52/028 , Y02D70/142
摘要： A detection circuit is mounted on an electronic device having a communication function, including at least a battery, a CPU, and a communication unit, and is configured to detect the remaining battery charge. An A/D converter performs sampling of a magnitude of a current IBAT discharged from the battery, and converts the current IBAT thus sampled into a digital current value. An interface circuit receives, from the CPU, control data which indicates a period in which there is an increase in the current discharged from the battery. Based upon the control data, a control unit raises the sampling frequency of the A/D converter in the period in which there is an increase in the current IBAT.
摘要翻译：检测电路安装在具有通信功能的电子设备上，至少包括电池，CPU和通信单元，并且被配置为检测剩余电池电量。 A / D转换器对从电池放电的电流IBAT的大小进行采样，并将由此采样的电流IBAT转换为数字电流值。接口电路从CPU接收指示从电池释放的电流增加的期间的控制数据。基于控制数据，控制单元在当前IBAT增加的时段内提高A / D转换器的采样频率。

3. 发明申请

US20070262805A1 Start-up circuit and start-up method 有权
标题翻译：启动电路和启动方式
公开(公告)号：US20070262805A1
公开(公告)日：2007-11-15
申请号：US11801167
申请日：2007-05-09
申请人： Tetsuro Hashimoto , Akihito Ito , Yoshikazu Sasaki , Isao Yamamoto
发明人： Tetsuro Hashimoto , Akihito Ito , Yoshikazu Sasaki , Isao Yamamoto
IPC分类号： G06F1/04
CPC分类号： G06F1/24 , G06F1/26 , G06F1/28
摘要： A start-up circuit receives a start-up signal instructing start-up of an equipment mounted with the circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal. An oscillator generates a clock signal. A sequence circuit receives the start-up signal and a clock signal output from the oscillator, measures time by counting the clock signal when the start-up signal transits to a predetermined level, and executes a predetermined event at a predetermined timing. The oscillator operates for a period where the start-up signal is at the predetermined level if the start-up signal is at the predetermined level during the period the power key of the equipment mounted with the circuit is being pushed.
摘要翻译：启动电路接收指示启动安装有电路的设备的启动信号，并且在启动信号指示启动时执行预定的顺序。振荡器产生时钟信号。序列电路接收启动信号和从振荡器输出的时钟信号，通过在启动信号转换到预定电平时对时钟信号进行计数来测量时间，并在预定定时执行预定事件。如果启动信号处于预定电平，则在启动信号处于预定电平的期间，振荡器工作在安装有电路的设备的电源键被按下的期间。

4. 发明授权

US07876144B2 Start-up circuit and start-up method 有权
标题翻译：启动电路和启动方式
公开(公告)号：US07876144B2
公开(公告)日：2011-01-25
申请号：US11801167
申请日：2007-05-09
申请人： Tetsuro Hashimoto , Akihito Ito , Yoshikazu Sasaki , Isao Yamamoto
发明人： Tetsuro Hashimoto , Akihito Ito , Yoshikazu Sasaki , Isao Yamamoto
IPC分类号： H03K3/00
CPC分类号： G06F1/24 , G06F1/26 , G06F1/28
摘要： A start-up circuit receives a start-up signal instructing start-up of an equipment mounted with the circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal. An oscillator generates a clock signal. A sequence circuit receives the start-up signal and a clock signal output from the oscillator, measures time by counting the clock signal when the start-up signal transits to a predetermined level, and executes a predetermined event at a predetermined timing. The oscillator operates for a period where the start-up signal is at the predetermined level if the start-up signal is at the predetermined level during the period the power key of the equipment mounted with the circuit is being pushed.
摘要翻译：启动电路接收指示启动安装有电路的设备的启动信号，并且在启动信号指示启动时执行预定的顺序。振荡器产生时钟信号。序列电路接收启动信号和从振荡器输出的时钟信号，通过在启动信号转换到预定电平时对时钟信号进行计数来测量时间，并在预定定时执行预定事件。如果启动信号处于预定电平，则在启动信号处于预定电平的期间，振荡器工作在安装有电路的设备的电源键被按下的期间。

5. 发明授权

US07768247B2 Under voltage lock out circuit and method 有权
标题翻译：欠压锁定电路和方法
公开(公告)号：US07768247B2
公开(公告)日：2010-08-03
申请号：US12345493
申请日：2008-12-29
申请人： Yoshikazu Sasaki , Tetsuro Hashimoto , Isao Yamamoto
发明人： Yoshikazu Sasaki , Tetsuro Hashimoto , Isao Yamamoto
IPC分类号： H02H3/24 , G05F5/00
CPC分类号： H02M1/36 , Y10S323/901
摘要： An under voltage lock out circuit which monitors an input voltage and executes a predetermined sequence when the input voltage satisfies a predetermined condition may include a voltage comparison unit which compares the input voltage and a predetermined threshold voltage, and outputs a comparison signal; a logic circuit which receives the comparison signal output from the voltage comparison unit and a start-up signal instructing start-up of an equipment mounted with the under voltage lock out circuit, and asserts a sequence control signal when start-up is instructed by the start-up signal in a state the input voltage is higher than the threshold voltage; and a sequence circuit which executes a predetermined sequence when the sequence control signal is asserted, wherein the predetermined threshold voltage is switched according to the sequence control signal.
摘要翻译：当输入电压满足预定条件时，监视输入电压并执行预定序列的欠压锁定电路可以包括比较输入电压和预定阈值电压并输出比较信号的电压比较单元; 接收从电压比较单元输出的比较信号的逻辑电路和指示安装有欠压锁定电路的设备的起动信号的启动信号，并且当启动指示时启动序列控制信号启动信号处于输入电压高于阈值电压的状态; 以及当所述序列控制信号被断言时执行预定序列的序列电路，其中根据所述序列控制信号切换所述预定阈值电压。

6. 发明授权

US07486064B2 Under voltage lock out circuit and method 有权
标题翻译：欠压锁定电路和方法
公开(公告)号：US07486064B2
公开(公告)日：2009-02-03
申请号：US11800644
申请日：2007-05-07
申请人： Yoshikazu Sasaki , Tetsuro Hashimoto , Isao Yamamoto
发明人： Yoshikazu Sasaki , Tetsuro Hashimoto , Isao Yamamoto
IPC分类号： H02H3/24 , G05F5/00
CPC分类号： H02M1/36 , Y10S323/901
摘要： A voltage comparison unit compares a battery voltage with a predetermined threshold voltage, and outputs a comparison signal. A sequence circuit receives the comparison signal and a start-up signal instructing start-up of equipment mounted with a UVLO circuit, and executes a predetermined sequence when start-up is instructed by the start-up signal in a state the battery voltage is higher than the threshold voltage. A voltage control unit switches the threshold voltage based on the comparison signal and the start-up signal.
摘要翻译：电压比较单元将电池电压与预定阈值电压进行比较，并输出比较信号。序列电路接收比较信号和指示启动安装有UVLO电路的设备的启动信号，并且在电池电压较高的状态下由起动信号指示启动时执行预定的顺序超过阈值电压。电压控制单元基于比较信号和启动信号来切换阈值电压。

7. 发明申请

US20080001574A1 Battery charging controller and portable electronic device 有权
标题翻译：电池充电控制器和便携式电子设备
公开(公告)号：US20080001574A1
公开(公告)日：2008-01-03
申请号：US11805908
申请日：2007-05-25
申请人： Tetsuro Hashimoto , Isao Yamamoto , Yoshikazu Sasaki
发明人： Tetsuro Hashimoto , Isao Yamamoto , Yoshikazu Sasaki
IPC分类号： H02J7/04
CPC分类号： H02J7/04
摘要： A battery charging controller according to the present invention controls battery charging in response to a charging-control signal sent from a CPU, and includes an starting controller which is started upon a detection of an insertion of an AC adapter, and which then starts a regulator at a predetermined timing by using a regulator control signal. The regulator is started upon a detection of the regulator control signal, and thereafter starts the CPU by using an starting signal. The CPU is started upon a detection of the starting signal.
摘要翻译：根据本发明的电池充电控制器响应于从CPU发送的充电控制信号来控制电池充电，并且包括启动控制器，其在检测到AC适配器的插入时启动，然后启动调节器通过使用调节器控制信号在预定定时。调节器在检测到调节器控制信号时启动，然后通过使用启动信号启动CPU。在检测到启动信号时启动CPU。

8. 发明申请

US20070296377A1 Battery charging circuit, portable electronic device and semiconductor integrated circuit 有权
标题翻译：电池充电电路，便携式电子设备和半导体集成电路
公开(公告)号：US20070296377A1
公开(公告)日：2007-12-27
申请号：US11804075
申请日：2007-05-17
申请人： Tetsuro Hashimoto , Isao Yamamoto
发明人： Tetsuro Hashimoto , Isao Yamamoto
IPC分类号： H02J7/06 , H02J7/04
CPC分类号： H02J7/0052
摘要： A battery charging circuit is used by being connected to a direct-current power source. The battery charging circuit includes a control transistor, a backflow prevention transistor and a charging controller. The control transistor is disposed in a charging path between the direct-current power source and a battery, and is configured to control a direct-current voltage from the direct-current power source, and to output controlled direct-current voltage as a charging voltage. The backflow prevention transistor is disposed in the charging path, and is configured to output the charging voltage to the battery, and to be turned off when an electric current flows backward from the battery to the direct-current power source. The charging controller is configured to turn on the backflow prevention transistor when charging of the battery starts, and to turn on the control transistor after a fixed period of time elapses from a start of the charging.
摘要翻译：通过连接到直流电源来使用电池充电电路。电池充电电路包括控制晶体管，防回流晶体管和充电控制器。控制晶体管设置在直流电源和电池之间的充电路径中，并且被配置为控制来自直流电源的直流电压，并且输出受控直流电压作为充电电压。防回流晶体管设置在充电路径中，并且被配置为向电池输出充电电压，并且当电流从电池向后流动到直流电源时被关断。充电控制器被配置为当电池充电开始时接通防回流晶体管，并且在从充电开始经过固定时间段之后接通控制晶体管。

9. 发明授权

US07884578B2 Battery charging circuit with backflow prevention transistor, portable electronic device and semiconductor integrated circuit with backflow prevention transistor 有权
标题翻译：带防回流晶体管的电池充电电路，便携式电子器件和具防回流晶体管的半导体集成电路
公开(公告)号：US07884578B2
公开(公告)日：2011-02-08
申请号：US11804075
申请日：2007-05-17
申请人： Tetsuro Hashimoto , Isao Yamamoto
发明人： Tetsuro Hashimoto , Isao Yamamoto
IPC分类号： H02J7/06 , H02J7/24
CPC分类号： H02J7/0052
摘要： A battery charging circuit is used by being connected to a direct-current power source. The battery charging circuit includes a control transistor, a backflow prevention transistor and a charging controller. The control transistor is disposed in a charging path between the direct-current power source and a battery, and is configured to control a direct-current voltage from the direct-current power source, and to output controlled direct-current voltage as a charging voltage. The backflow prevention transistor is disposed in the charging path, and is configured to output the charging voltage to the battery, and to be turned off when an electric current flows backward from the battery to the direct-current power source. The charging controller is configured to turn on the backflow prevention transistor when charging of the battery starts, and to turn on the control transistor after a fixed period of time elapses from a start of the charging.
摘要翻译：通过连接到直流电源来使用电池充电电路。电池充电电路包括控制晶体管，防回流晶体管和充电控制器。控制晶体管设置在直流电源和电池之间的充电路径中，并且被配置为控制来自直流电源的直流电压，并输出受控直流电压作为充电电压。防回流晶体管设置在充电路径中，并且被配置为向电池输出充电电压，并且当电流从电池向后流动到直流电源时被关断。充电控制器被配置为当电池充电开始时接通防回流晶体管，并且在从充电开始经过固定时间段之后接通控制晶体管。

10. 发明授权

US07843172B2 Battery charging controller and portable electronic device 有权
标题翻译：电池充电控制器和便携式电子设备
公开(公告)号：US07843172B2
公开(公告)日：2010-11-30
申请号：US11805908
申请日：2007-05-25
申请人： Tetsuro Hashimoto , Isao Yamamoto , Yoshikazu Sasaki
发明人： Tetsuro Hashimoto , Isao Yamamoto , Yoshikazu Sasaki
IPC分类号： H02J7/04 , H02J7/02
CPC分类号： H02J7/04
摘要： A battery charging controller according to the present invention controls battery charging in response to a charging-control signal sent from a CPU, and includes an starting controller which is started upon a detection of an insertion of an AC adapter, and which then starts a regulator at a predetermined timing by using a regulator control signal. The regulator is started upon a detection of the regulator control signal, and thereafter starts the CPU by using an starting signal. The CPU is started upon a detection of the starting signal.
摘要翻译：根据本发明的电池充电控制器响应于从CPU发送的充电控制信号来控制电池充电，并且包括启动控制器，其在检测到AC适配器的插入时启动，然后启动调节器通过使用调节器控制信号在预定定时。调节器在检测到调节器控制信号时启动，然后通过使用启动信号启动CPU。在检测到启动信号时启动CPU。

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