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1. 发明授权

US07256552B2 LED control circuit 有权
标题翻译： LED控制电路
公开(公告)号：US07256552B2
公开(公告)日：2007-08-14
申请号：US11199710
申请日：2005-08-09
申请人： Takaaki Ishii , Nobuyuki Ohtaka
发明人： Takaaki Ishii , Nobuyuki Ohtaka
IPC分类号： G01G3/10 , G01G5/02
CPC分类号： H05B33/0842 , H05B33/086 , H05B33/0863
摘要： An LED control circuit for controlling a plurality of LEDs with different emission colors comprises a counter which increments or decrements a count value at a predetermined clock in response to a count start signal externally supplied, a signal conversion circuit which converts the count value into an analog signal displaying intensity corresponding to the count value and outputs the analog signal as an output signal, a signal generation circuit which generates, based on the output signal from the signal conversion circuit and brightness data externally specified to its corresponding LED, an analog signal displaying intensity corresponding to a product of the output signal and the brightness data, and a driving circuit which drives its corresponding LED according to the analog signal output from the signal generation circuit, to gradually and simultaneously change the brightness of the LEDs in accordance with the count value.
摘要翻译：用于控制具有不同发光颜色的多个LED的LED控制电路包括响应于外部提供的计数开始信号而在预定时钟增加或减少计数值的计数器，将计数值转换为模拟信号的信号转换电路信号显示强度对应于计数值，并输出模拟信号作为输出信号;信号产生电路，根据来自信号转换电路的输出信号和外部指定给其相应LED的亮度数据产生模拟信号显示强度对应于输出信号和亮度数据的乘积的驱动电路，以及根据从信号发生电路输出的模拟信号驱动其对应的LED的驱动电路，根据计数值逐渐并且同时改变LED的亮度。

2. 发明申请

US20060033443A1 LED control circuit 有权
标题翻译： LED控制电路
公开(公告)号：US20060033443A1
公开(公告)日：2006-02-16
申请号：US11199710
申请日：2005-08-09
申请人： Takaaki Ishii , Nobuyuki Ohtaka
发明人： Takaaki Ishii , Nobuyuki Ohtaka
IPC分类号： H05B39/10
CPC分类号： H05B33/0842 , H05B33/086 , H05B33/0863
摘要： An LED control circuit for controlling a plurality of LEDs with different emission colors comprises a counter which increments or decrements a count value at a predetermined clock in response to a count start signal externally supplied, a signal conversion circuit which converts the count value into an analog signal displaying intensity corresponding to the count value and outputs the analog signal as an output signal, a signal generation circuit which generates, based on the output signal from the signal conversion circuit and brightness data externally specified to its corresponding LED, an analog signal displaying intensity corresponding to a product of the output signal and the brightness data, and a driving circuit which drives its corresponding LED according to the analog signal output from the signal generation circuit, to gradually and simultaneously change the brightness of the LEDs in accordance with the count value.
摘要翻译：用于控制具有不同发光颜色的多个LED的LED控制电路包括响应于外部提供的计数开始信号而在预定时钟增加或减少计数值的计数器，将计数值转换为模拟信号的信号转换电路信号显示强度对应于计数值，并输出模拟信号作为输出信号;信号产生电路，根据来自信号转换电路的输出信号和外部指定给其相应LED的亮度数据产生模拟信号显示强度对应于输出信号和亮度数据的乘积的驱动电路，以及根据从信号发生电路输出的模拟信号驱动其对应的LED的驱动电路，根据计数值逐渐并且同时改变LED的亮度。

3. 发明授权

US08305006B2 Light emitting element control circuit 有权
标题翻译：发光元件控制电路
公开(公告)号：US08305006B2
公开(公告)日：2012-11-06
申请号：US12200752
申请日：2008-08-28
申请人： Takaaki Ishii , Nobuyuki Ohtaka
发明人： Takaaki Ishii , Nobuyuki Ohtaka
IPC分类号： H05B37/02
CPC分类号： H05B33/0827
摘要： A light emitting element control circuit comprising: a variable current generation circuit configured to generate a variable current varying in a direction of increase or in a direction of decrease; a fixed current generation circuit configured to generate a fixed current smaller than a predetermined current of a light emitting element; and a mode setting circuit configured to selectively set a first mode of prohibiting supply of the variable current and the fixed current to the light emitting element, a second mode of supplying the variable current to the light emitting element, and a third mode of supplying the fixed current to the light emitting element, for the variable current generation circuit and the fixed current generation circuit.
摘要翻译：一种发光元件控制电路，包括：可变电流产生电路，被配置为产生在增加方向或减小方向上变化的可变电流; 固定电流产生电路，被配置为产生小于发光元件的预定电流的固定电流; 以及模式设定电路，被配置为选择性地设置禁止向所述发光元件供应所述可变电流和所述固定电流的第一模式，向所述发光元件提供所述可变电流的第二模式，以及提供所述可变电流的第三模式用于可变电流产生电路和固定电流产生电路的发光元件的固定电流。

4. 发明申请

US20090066263A1 Light Emitting Element Control Circuit 有权
标题翻译：发光元件控制电路
公开(公告)号：US20090066263A1
公开(公告)日：2009-03-12
申请号：US12200752
申请日：2008-08-28
申请人： Takaaki Ishii , Nobuyuki Ohtaka
发明人： Takaaki Ishii , Nobuyuki Ohtaka
IPC分类号： H05B37/02
CPC分类号： H05B33/0827
摘要： A light emitting element control circuit comprising: a variable current generation circuit configured to generate a variable current varying in a direction of increase or in a direction of decrease; a fixed current generation circuit configured to generate a fixed current smaller than a predetermined current of a light emitting element; and a mode setting circuit configured to selectively set a first mode of prohibiting supply of the variable current and the fixed current to the light emitting element, a second mode of supplying the variable current to the light emitting element, and a third mode of supplying the fixed current to the light emitting element, for the variable current generation circuit and the fixed current generation circuit.
摘要翻译：一种发光元件控制电路，包括：可变电流产生电路，被配置为产生在增加方向或减小方向上变化的可变电流; 固定电流产生电路，被配置为产生小于发光元件的预定电流的固定电流; 以及模式设定电路，被配置为选择性地设置禁止向所述发光元件供应所述可变电流和所述固定电流的第一模式，向所述发光元件提供所述可变电流的第二模式，以及提供所述可变电流的第三模式用于可变电流产生电路和固定电流产生电路的发光元件的固定电流。

5. 发明授权

US08203524B2 Light-emitting element driving circuit 有权
标题翻译：发光元件驱动电路
公开(公告)号：US08203524B2
公开(公告)日：2012-06-19
申请号：US12557128
申请日：2009-09-10
申请人： Tomoshi Yoshida , Nobuyuki Ohtaka
发明人： Tomoshi Yoshida , Nobuyuki Ohtaka
IPC分类号： G09G3/36
CPC分类号： H05B33/0851
摘要： A light-emitting element driving circuit (10) comprises a luminosity determining unit (70) which determines luminosity, outputs a luminosity determination result, and outputs brightness change information, a brightness setting unit (60) which outputs brightness setting information and outputs brightness change information, a light-emitting element driving unit (40) which drives a light-emitting element with a current of a current value corresponding to the brightness setting information, a detecting and comparing unit (50) which compares a terminal voltage of the light-emitting element and a predetermined voltage, a voltage boost determining unit (30) which determines whether or not a terminal voltage of the light-emitting element is to be boosted based on at least one of the luminosity change information and the brightness change information, and a voltage boosting circuit section (20) which boosts the terminal voltage of the light-emitting element when it is determined that the voltage is to be boosted and does not boost the terminal voltage of the light-emitting element when it is determined that the voltage is not to be boosted.
摘要翻译：发光元件驱动电路（10）具有决定亮度的亮度决定部（70），输出亮度判定结果，输出亮度变化信息，输出亮度设定信息的亮度设定部（60），输出亮度变化信息，以与亮度设定信息对应的电流值驱动发光元件的发光元件驱动单元（40），将发光元件的端子电压进行比较的检测比较单元（50）发光元件和预定电压的电压升高确定单元，其基于亮度变化信息和亮度变化信息中的至少一个来确定是否要提高发光元件的端子电压，以及升压电路部（20），其在确定所述电压时提升所述发光元件的端子电压当确定电压不被升压时，Ge将被提升并且不会提高发光元件的端电压。

6. 发明授权

US08093879B2 Semiconductor circuit 有权
标题翻译：半导体电路
公开(公告)号：US08093879B2
公开(公告)日：2012-01-10
申请号：US12559017
申请日：2009-09-14
申请人： Ryuji Yamamoto , Nobuyuki Ohtaka
发明人： Ryuji Yamamoto , Nobuyuki Ohtaka
IPC分类号： G05F1/40
CPC分类号： H02M3/156
摘要： A semiconductor circuit (10a) comprises a first terminal section (17) to be connected to a connection point of two external resistors; a second terminal section (18) to be connected to an external circuit; a voltage circuit section having a first terminal connected to the second terminal section (18); a reference voltage circuit section (102) which outputs a predetermined voltage; an operational amplifier (104) having a first input terminal connected to the reference voltage circuit section (102), a second input terminal connected to the first terminal section (17), and an output terminal connected to a second terminal of the voltage circuit section; an abnormality detecting circuit which detects an abnormal voltage of the first terminal section (17); a normal signal generating unit (130) which generates a normal signal; and a switching circuit which, when the abnormality detecting circuit detects the abnormal voltage, does not output a voltage based on the first terminal section (17) to the second terminal section (18) and instead outputs a normal voltage based on the normal signal to the second terminal section (18).
摘要翻译：半导体电路（10a）包括要连接到两个外部电阻器的连接点的第一端子部分（17）连接到外部电路的第二端子部分（18）; 电压电路部分，具有连接到第二端子部分（18）的第一端子; 输出预定电压的参考电压电路部分（102）; 具有连接到基准电压电路部分（102）的第一输入端子的运算放大器（104），连接到第一端子部分（17）的第二输入端子，以及连接到电压电路部分 ; 检测第一端子部（17）的异常电压的异常检测电路; 正常信号生成单元，生成正常信号; 以及开关电路，当所述异常检测电路检测到异常电压时，不将基于所述第一端子部（17）的电压输出到所述第二端子部（18），而是将基于所述正常信号的正常电压输出到第二端子部分（18）。

7. 发明申请

US20050127984A1 Power supply circuit having a plurality of voltage conversion circuits 审中-公开
标题翻译：电源电路具有多个电压转换电路
公开(公告)号：US20050127984A1
公开(公告)日：2005-06-16
申请号：US11008884
申请日：2004-12-10
申请人： Nobuyuki Ohtaka
发明人： Nobuyuki Ohtaka
IPC分类号： H02M3/07 , G05F1/10
CPC分类号： H02M3/07 , H02M2001/0045 , H02M2001/009
摘要： The output voltage of a charge pump 10 is monitored by a voltage monitoring circuit. The operating current of a series regulator is restricted when the output voltage of the charge pump falls below a predetermined value. A power supply circuit is provided that is capable of effectively eliminating the decline in the output voltage of the charge pump.
摘要翻译：电荷泵10的输出电压由电压监视电路监视。当电荷泵的输出电压低于预定值时，串联调节器的工作电流受到限制。提供了能够有效地消除电荷泵的输出电压下降的电源电路。

8. 发明申请

US20100060674A1 LIGHT-EMITTING ELEMENT DRIVING CIRCUIT 有权
标题翻译：发光元件驱动电路
公开(公告)号：US20100060674A1
公开(公告)日：2010-03-11
申请号：US12557128
申请日：2009-09-10
申请人： Tomoshi Yoshida , Nobuyuki Ohtaka
发明人： Tomoshi Yoshida , Nobuyuki Ohtaka
IPC分类号： G09G5/10 , H05B37/02
CPC分类号： H05B33/0851
摘要： A light-emitting element driving circuit (10) comprises a luminosity determining unit (70) which determines luminosity, outputs a luminosity determination result, and outputs brightness change information, a brightness setting unit (60) which outputs brightness setting information and outputs brightness change information, a light-emitting element driving unit (40) which drives a light-emitting element with a current of a current value corresponding to the brightness setting information, a detecting and comparing unit (50) which compares a terminal voltage of the light-emitting element and a predetermined voltage, a voltage boost determining unit (30) which determines whether or not a terminal voltage of the light-emitting element is to be boosted based on at least one of the luminosity change information and the brightness change information, and a voltage boosting circuit section (20) which boosts the terminal voltage of the light-emitting element when it is determined that the voltage is to be boosted and does not boost the terminal voltage of the light-emitting element when it is determined that the voltage is not to be boosted.
摘要翻译：发光元件驱动电路（10）具有决定亮度的亮度决定部（70），输出亮度判定结果，输出亮度变化信息，输出亮度设定信息的亮度设定部（60），输出亮度变化信息，以与亮度设定信息对应的电流值驱动发光元件的发光元件驱动单元（40），将发光元件的端子电压进行比较的检测比较单元（50）发光元件和预定电压的电压升高确定单元，其基于亮度变化信息和亮度变化信息中的至少一个来确定是否要提高发光元件的端子电压，以及升压电路部（20），其在确定所述电压时提升所述发光元件的端子电压当确定电压不被升压时，Ge将被提升并且不会提高发光元件的端电压。

9. 发明申请

US20060043931A1 Step-up switching voltage regulator circuit 有权
公开(公告)号：US20060043931A1
公开(公告)日：2006-03-02
申请号：US11212243
申请日：2005-08-26
申请人： Nobuyuki Ohtaka
发明人： Nobuyuki Ohtaka
IPC分类号： H02J7/00
CPC分类号： H02J7/0065
摘要： A power voltage of a battery (including a secondary battery) mounted on a portable device drops with use or the like of the portable device. Therefore, a step-up switching voltage regulator circuit is mounted on the portable device. On the other hand, the power voltage of the battery exceeds a voltage necessary for driving the portable device sometimes when the battery is fully charged. In this case, when the step-up switching voltage regulator circuit is driven, the power is consumed in vain, and a burden is imposed on the battery. The step-up switching voltage regulator circuit of the present embodiment switches an output in accordance with the power voltage, that is, raises the power voltage supplied from the battery to a predetermined output voltage, and outputs the output voltage, when the power voltage supplied from the battery is smaller than the predetermined output voltage; on the other hand, the step-up switching voltage regulator circuit outputs the power voltage supplied from the battery as the output voltage, when the power voltage supplied from the battery is larger than the predetermined output voltage; and consequently, in the step-up switching voltage regulator circuit, the burden on the battery mounted on the portable device can be reduced.

10. 发明授权

US08228005B2 Light-emitting-element driving circuit 有权
标题翻译：发光元件驱动电路
公开(公告)号：US08228005B2
公开(公告)日：2012-07-24
申请号：US12848396
申请日：2010-08-02
申请人： Nobuyuki Ohtaka , Tomoshi Yoshida
发明人： Nobuyuki Ohtaka , Tomoshi Yoshida
IPC分类号： H05B37/02
CPC分类号： H05B33/0887
摘要： A light-emitting-element driving circuit is provided which comprises a voltage boosting circuit unit which supplies a boosted voltage to a light-emitting element, a current circuit unit which drives the light-emitting element with a current, a normal feedback loop path through which a voltage of the light-emitting element is input as a feedback voltage to the voltage boosting circuit unit, a backup feedback loop path through which a voltage of the light-emitting element is input as the feedback voltage to the voltage boosting circuit unit, an abnormality detection circuit unit which compares the feedback voltage which is input through the normal feedback loop path to the voltage boosting circuit unit and a predetermined determination voltage, to detect abnormality, and a switching circuit which switches from the normal feedback loop path to the backup feedback loop path when the abnormality detection circuit unit has detected the abnormality.
摘要翻译：提供了一种发光元件驱动电路，其包括将升压电压提供给发光元件的升压电路单元，以电流驱动发光元件的电流电路单元，通过正常反馈环路径将所述发光元件的电压作为反馈电压输入到所述升压电路单元，将所述发光元件的电压作为所述反馈电压输入到所述升压电路单元的备用反馈回路，异常检测电路单元，其将通过正常反馈环路输入的反馈电压与升压电路单元和预定的确定电压进行比较，以检测异常;以及开关电路，其从正常反馈环路径切换到备用当异常检测电路单元检测到异常时，反馈环路径。

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