WO2005080997A1 - 電圧検出回路及びそれを用いたバッテリ装置 - Google Patents
電圧検出回路及びそれを用いたバッテリ装置 Download PDFInfo
- Publication number
- WO2005080997A1 WO2005080997A1 PCT/JP2005/002273 JP2005002273W WO2005080997A1 WO 2005080997 A1 WO2005080997 A1 WO 2005080997A1 JP 2005002273 W JP2005002273 W JP 2005002273W WO 2005080997 A1 WO2005080997 A1 WO 2005080997A1
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- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- threshold
- threshold voltage
- input
- input voltage
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
Definitions
- the present invention relates to a voltage detection circuit that detects a voltage of a notch or the like and outputs a signal indicating whether the voltage is higher or lower than a predetermined voltage, and a battery-equipped device that can sufficiently exhibit the capability of a battery. It relates to a suitable battery device.
- FIG. 4 shows a voltage detection circuit and a battery device using the same.
- the knowledge device 101 includes a voltage detection circuit 102 and series-connected resistors 104 and 105 having one end for generating the input voltage V and grounded.
- a battery 103 connected to the other end and serving as a power supply for the battery-equipped device.
- the voltage of the notch 103 is divided by resistors 104 and 105 connected in series, and the voltage is input to the voltage detection circuit 102 as an input voltage V.
- the voltage detection circuit 102
- the voltage V is compared with the detection threshold voltage V.
- Input voltage V is the detection threshold voltage V
- the output terminal OUT is connected to another electronic component (not shown) that configures the device equipped with the battery.
- the input voltage V increases (changes from a low voltage to a higher voltage).
- Threshold value for selectively generating value voltage (high and low !, side)!
- a comparator 111 for comparing the threshold voltage (detection threshold voltage V) with the input voltage V.
- An inverter 124 that inverts the output and outputs the output, an output switching element 113 that receives the output and outputs a voltage detection result from an output terminal OUT, and a reference that generates a reference voltage V.
- a voltage generator (REF) 114 and a force are also configured.
- the output of the inverter 124 is The selection of the two threshold voltages in the value voltage generator 112 is also performed. Also, the reference voltage V
- the threshold voltage generator 112 and the comparator 111 realize hysteresis of input voltage detection. Thus, when the input voltage V is near the detection threshold voltage V,
- Patent Document 1 Japanese Patent Application Laid-Open No. 11 258280
- the battery device 101 has a higher threshold voltage when the input voltage V increases.
- FIG. 5 shows the relationship between the input voltage V and the detection threshold voltage V.
- the figure shows the battery
- the value voltage for example, 2.9V
- the voltage drops to a voltage (for example, 2.6 V) between the high-side threshold voltage and the low-side threshold voltage (for example, 2.5 V). Remove the note 103 and set the input voltage V
- the output terminal OUT changes from high level to ⁇
- Input voltage V rises and rises above the lower threshold voltage.
- the output terminal OUT remains at the low level because the threshold voltage does not reach the high side and does not cross it. Therefore, the device equipped with a battery operated assuming that there is a battery remaining until the battery 103 was removed. This causes a phenomenon in which the battery-equipped device does not start. Therefore, the battery-equipped device must be Until it can be used, the usable time of the battery will be reduced.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a voltage detection circuit and a voltage detection circuit that, when incorporated in a battery-equipped device, make it possible to use the battery without fail until the use limit is reached. It is to provide a battery device using the same.
- a voltage detection circuit includes a first threshold, a value voltage or lower, and a second threshold, which compares a value voltage with an input voltage.
- the input voltage changes from a low voltage to a high voltage, and when the input voltage crosses the first voltage, the second threshold voltage is selected.
- a threshold voltage compulsory setting circuit that outputs a pulse so that the second threshold voltage is forcibly selected in the input voltage comparison circuit; In the second threshold, the value voltage is compared with the input voltage.
- the value voltage compulsory setting circuit preferably changes the input voltage from a low voltage to a high voltage to a third voltage, and a third threshold when the input voltage crosses the value voltage.
- the input voltage is high !
- the voltage changes from low to low
- the fourth threshold is selected. In the case of 3, the value voltage is selected.
- a battery device includes the above-described voltage detection circuit, a series-connected resistor that is grounded at one end for generating its input voltage, and a battery connected to the other end. Is provided.
- a voltage detection circuit and a battery device using the same provide a third threshold voltage lower than the first and second threshold voltages, and When the voltage rises to the third threshold voltage, the threshold voltage compulsory setting circuit sets the input voltage comparison circuit to the second threshold voltage. In this case, the battery can be reliably used up to the usage limit.
- FIG. 1 is a circuit diagram of a voltage detection circuit according to an embodiment of the present invention and a battery device using the same.
- FIG. 2 is a circuit diagram of a threshold voltage generator of the above.
- FIG. 3 is an operation waveform diagram of the above.
- FIG. 4 is a circuit diagram of a voltage detection circuit of the background art and a battery device using the same.
- FIG. 5 is an operation waveform diagram of the above.
- FIG. 1 is a circuit diagram of a voltage detection circuit 2 according to an embodiment of the present invention and a battery device 1 using the same.
- This notch device 1 generates a voltage detection circuit 2 and an input voltage V thereof, and has one end grounded.
- resistors 3 and 5 connected in series and connected to the other end and serving as a power source for the battery-equipped device.
- the voltage of the battery 3 is divided by the resistors 4 and 5 connected in series.
- the voltage is input to the voltage detection circuit 2 as the input voltage V.
- Voltage detection circuit 2
- the output terminal OUT is connected to another electronic component (not shown) that configures the device equipped with the battery.
- the ratio of the resistance values of the resistors 4 and 5 connected in series is determined by the specifications of each electronic component that constitutes the device with a notch, and is large enough to suppress the value of the flowing DC current. As a resistance value!
- the voltage detection circuit 2 includes an input voltage comparison circuit 7 and a threshold voltage compulsory setting circuit 8 as main circuits.
- the input voltage comparison circuit 7 is connected to the first threshold voltage V or higher.
- the lower second threshold voltage V is defined as the detection threshold voltage V, and is compared with the input voltage V.
- the th2 TH BAT Controls the opening / closing (on / off) of the output switching element 13 according to the compared output.
- the input voltage V increases, that is,
- thl th2 is selected as the detection threshold voltage V, and the input voltage V drops,
- the voltage V is selected as the detection threshold voltage V. Therefore, the input voltage comparison circuit 7 thl TH
- the output switching element 13 In the vicinity of TH, the output switching element 13 repeatedly turns on and off due to minute noise, the output of the output terminal OUT is not stabilized, and the through current flows through the voltage detection circuit 2 itself and each electronic component constituting the battery-equipped device. And noise generation.
- the output switching element 13 is an open-drain type N-type MOS transistor, and is pulled up to one of the power supplies by a resistor (not shown) outside the voltage detection circuit 2.
- the forcible threshold voltage setting circuit 8 includes a third threshold voltage lower than the second threshold voltage V
- the voltage V is compared with the input voltage V, and the input voltage V changes from a low voltage to a high voltage th3 BAT BAT
- the input voltage comparison circuit 7 compares the second threshold voltage V with the input voltage V.
- the threshold voltage compulsory setting circuit 8 converts the third threshold voltage V into the input voltage V
- th3 BAT is low ⁇ from the high voltage !, lower than the third threshold voltage V when the voltage changes and crosses
- the fourth threshold voltage V is selected, and the fourth threshold voltage V is
- the third threshold voltage V is selected when the voltage changes from low voltage to low voltage
- the threshold voltage compulsory setting circuit 8 also has hysteresis, and when the input voltage V is near the third threshold voltage V, the threshold voltage
- the voltage detection circuit 2 includes an inverter 24 that inverts and outputs the output of the input voltage comparison circuit 7, an output switching element 13 that is turned on and off by the output, and an output of the input voltage comparison circuit 7.
- the output of the threshold voltage compulsory setting circuit 8 are input to control the input voltage comparison circuit 7 itself and the NOR circuit 23, and the reference voltage which directly inputs the voltage of the battery 3 to generate and outputs the reference voltage V A generator (REF) 14.
- the input voltage comparison circuit 7 inputs the threshold voltage generator 12 for selectively generating the first or second threshold voltage as the detection threshold voltage V, and the inverted voltage input terminal. Inspection
- the threshold voltage generator 12 is connected between the reference voltage V and the ground potential.
- a resistor 31 and 32 connected in series, a switch 33 provided in parallel with the resistor 31 and controlled by the input voltage of the terminal CNTLa, and a force are also configured.
- the connection point between the resistors 31 and 32 becomes the output terminal OUTa, and is connected to the inverting input terminal of the comparator 11.
- the terminal CNTLa is connected to the output of the NOR circuit 23, and is controlled by the output of the input voltage comparison circuit 7 itself and the threshold voltage compulsory setting circuit 8 as described above. If the voltage of the terminal CNTLa is at a high level, the switch 33 is closed, and the reference voltage V is supplied from the output terminal OUTa to the first switch.
- thl 3 is open and the reference voltage V is divided from the output terminal OUTa by resistors 31 and 32.
- the voltage is output as the second threshold voltage V.
- the input voltage comparison circuit 7 includes a threshold voltage generator 12 and a comparator 11 to provide hysteresis for detecting the input voltage V. Hysteresis can be achieved even in other circuit configurations.
- the forcible threshold voltage setting circuit 8 includes a second threshold voltage generator 16 for selectively generating a third or fourth threshold voltage, and a third threshold voltage input to a non-inverting input terminal. Or a second comparator 15 for comparing the fourth threshold voltage with the input voltage V input to the inverting input terminal;
- N-type MOS transistor 17, constant current source 18, capacitor 19, and inverter 20 have delay periods
- This circuit can be replaced by a counter that generates a delay period by inputting a reference clock.
- a circuit that generates this delay period, an inverter 21 and an AND circuit 22 generate a pulse having the delay period as a pulse width.
- the second threshold voltage generator 16 outputs the difference between the reference voltage V and the ground potential.
- Resistors 34, 35, 36 connected in series between them, a switch 37 provided in parallel with the resistor 34 and controlled by the input voltage of the terminal CNTLb, and a force are also configured.
- the connection point between the resistors 35 and 36 becomes the output terminal OUTb, and is connected to the non-inverting input terminal of the second comparator 15. Further, the terminal CNTLb is connected to the output of the second comparator 15. If the voltage of the terminal CNTLb is at a high level, the switch 37 is closed, and the reference voltage V is applied from the output terminal OUTb.
- the voltage divided by the resistor 35 and the resistor 36 is output as the third threshold voltage V.
- switch 37 opens, and the reference voltage is output from output terminal OUTb.
- the voltage obtained by dividing the voltage V by the series resistor consisting of the resistors 34 and 35 and the resistor 36 is the fourth voltage.
- the threshold voltage compulsory setting circuit 8 has hysteresis in order to prevent the output of the threshold voltage compulsory setting circuit 8 from becoming unstable.
- this output is not output to the outside of the voltage detection circuit 2, the through current and noise generated by the output are not large. Therefore, it may be omitted.
- the second threshold voltage generator 16 does not have the resistor 34 and the terminal CNTLb shown in FIG. 2 and always outputs only the third threshold voltage V.
- the operation of the voltage detection circuit 2 will be described with reference to FIG. 3 while exemplifying specific voltage values and the like. From the second threshold voltage V (for example, 2.5 V) as the detection threshold voltage V
- the output of the output terminal OUT is at a high level.
- the output voltage of the comparator 11 changes from the high level to the single level. Then, the output switching element 13 is turned on, the output terminal OUT becomes low level, and the detection threshold voltage V generated by the threshold voltage generator 12 becomes the first threshold voltage V (for example, 2. 9V).
- the input voltage V drops, and the fourth threshold voltage V (for example, 2.OV) is changed to the input voltage V.
- V for example, 2.OV
- the low level changes to a high level, and the second threshold! /, The threshold generated by the value voltage generator 16!
- the value voltage becomes the third threshold, the value voltage V (for example, 2.4 V).
- the operation of the pressure detection circuit 2 will be described.
- the third threshold voltage V (for example, 2.4 V) generated by the second threshold voltage generator 16 is changed from a low input voltage V to a high voltage.
- the output voltage of the second comparator 15 changes from the high level to the low level. Then, the N-type MOS transistor 17 is turned off, and the voltage of the capacitor 19 starts to gradually increase with the current from the constant current source 18. Up to the delay period (for example, 1 millisecond) Determines that the input is at a low level. Therefore, both the input of the AND circuit 22 is at a high level, and the output TP thereof is also at a high level. Low level. Therefore, the detection threshold voltage V generated by the threshold voltage generator 12 is equal to the second threshold voltage V
- the second threshold voltage generator 16 th2 (For example, 2.5V).
- the value voltage changes to a fourth threshold voltage V (for example, 2.0 V).
- the input voltage V further increases, and the second threshold is reached by the above-described delay period (for example, 1 millisecond).
- the input voltage V changes from a low voltage to a high voltage.
- the output voltage of the comparator 11 changes from low level to high level. Then, the output switching element 13 is turned off, and the output terminal OUT goes to a low or high level. Also, since the input to the NOR circuit 23 is at a high level, the detection threshold voltage V generated by the threshold voltage generator 12 is maintained at the second level even after the elapse of the above-mentioned delay period (for example, 1 millisecond) Threshold
- the second threshold voltage V for example, 2 thl th2
- the second threshold voltage V (for example, 2.5
- the output TP of the circuit 22 becomes low level
- the output of the NOR circuit 23 becomes high level
- the detection threshold voltage V generated by the threshold voltage generator 12 becomes the first threshold voltage V (for example,
- the output voltage of the comparator 11 remains at low level, the output terminal OUT remains at low level and does not change, and it is determined that there is no remaining battery.
- the state shown in the right part of FIG. 3 is when the input voltage V reaches the second threshold voltage V (for example, 2.5 V).
- the voltage detection circuit 2 according to the embodiment of the present invention and the knowledge device 1 using the same have the third and lower threshold voltages V 1, V 2 lower than the first and second threshold voltages V 1, V 2.
- Threshold voltage thl th2 Threshold voltage thl th2
- the value voltage compulsory setting circuit 8 sets the input voltage comparison circuit 7 to the second threshold voltage. Since the battery is set to V2, there is only a small amount of battery remaining, and even if the battery is removed and then reinserted, the battery runs out and the battery-equipped device does not start. Can be prevented. In this way, when the voltage detection circuit 2 and the battery device 1 using the same are incorporated in a device with a battery, the battery can be reliably used up to the usage limit and the battery usage time can be substantially extended. Can be.
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05710223A EP1722242A1 (en) | 2004-02-23 | 2005-02-15 | Voltage detecting circuit and battery device using same |
US10/598,279 US7446574B2 (en) | 2004-02-23 | 2005-02-15 | Voltage detecting circuit and battery device using same |
US12/244,810 US7639049B2 (en) | 2004-02-23 | 2008-10-03 | Voltage detecting circuit and battery device using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-045739 | 2004-02-23 | ||
JP2004045739A JP4033472B2 (ja) | 2004-02-23 | 2004-02-23 | 電圧検出回路及びそれを用いたバッテリ装置 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/598,279 A-371-Of-International US7446574B2 (en) | 2004-02-23 | 2005-02-15 | Voltage detecting circuit and battery device using same |
US12/244,810 Continuation US7639049B2 (en) | 2004-02-23 | 2008-10-03 | Voltage detecting circuit and battery device using same |
Publications (1)
Publication Number | Publication Date |
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WO2005080997A1 true WO2005080997A1 (ja) | 2005-09-01 |
Family
ID=34879410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/002273 WO2005080997A1 (ja) | 2004-02-23 | 2005-02-15 | 電圧検出回路及びそれを用いたバッテリ装置 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7446574B2 (ja) |
EP (1) | EP1722242A1 (ja) |
JP (1) | JP4033472B2 (ja) |
KR (1) | KR20070029135A (ja) |
CN (1) | CN100460877C (ja) |
TW (1) | TW200533929A (ja) |
WO (1) | WO2005080997A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113533976A (zh) * | 2021-02-08 | 2021-10-22 | 山东中信迪生电源有限公司 | 锂电池组综合检测方法及电路 |
Families Citing this family (11)
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---|---|---|---|---|
US9130986B2 (en) * | 2008-03-19 | 2015-09-08 | Websense, Inc. | Method and system for protection against information stealing software |
US8436659B1 (en) * | 2008-06-24 | 2013-05-07 | Marvell International Ltd. | Circuits and methods for reducing electrical stress on a transistor |
JP5337108B2 (ja) * | 2009-08-10 | 2013-11-06 | セイコーインスツル株式会社 | メモリ回路及びこれを備える電圧検出回路 |
JP2012100376A (ja) * | 2010-10-29 | 2012-05-24 | Mitsumi Electric Co Ltd | スイッチング電源装置 |
JP5698004B2 (ja) * | 2011-01-12 | 2015-04-08 | ラピスセミコンダクタ株式会社 | 半導体回路、電池監視システム、診断プログラム、及び診断方法 |
JP2013021792A (ja) * | 2011-07-08 | 2013-01-31 | Sanyo Denki Co Ltd | 電力給電システム |
JP6369782B2 (ja) * | 2014-06-05 | 2018-08-08 | パナソニックIpマネジメント株式会社 | 電源装置及び該電源装置を用いた前照灯装置及び該前照灯装置を用いた車両 |
US9658634B2 (en) | 2015-03-30 | 2017-05-23 | Apple Inc. | Under voltage detection and performance throttling |
TWI674751B (zh) * | 2018-03-21 | 2019-10-11 | 瑞昱半導體股份有限公司 | 可保護低電壓元件的電路架構 |
US10680594B2 (en) | 2018-07-10 | 2020-06-09 | Nxp Usa, Inc. | Comparator circuit with feedback and method of operation |
TWI736425B (zh) * | 2020-09-18 | 2021-08-11 | 瑞昱半導體股份有限公司 | 晶片封裝構件及其晶片功能執行方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55125576U (ja) * | 1979-02-28 | 1980-09-05 | ||
JPH11248761A (ja) * | 1998-03-05 | 1999-09-17 | Texas Instr Japan Ltd | 電圧比較回路 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5047751A (en) * | 1989-02-03 | 1991-09-10 | Nec Corporation | Power supply voltage monitoring circuit |
JP2719655B2 (ja) * | 1989-07-14 | 1998-02-25 | ヤマハ株式会社 | 波形信号変換装置 |
CN2243083Y (zh) * | 1995-12-18 | 1996-12-18 | 曹诚 | 用多个发光二极管显示的家用电池电压测量器 |
FR2749939B1 (fr) * | 1996-06-13 | 1998-07-31 | Sgs Thomson Microelectronics | Detecteur de gamme de tension d'alimentation dans un circuit integre |
JP3516556B2 (ja) * | 1996-08-02 | 2004-04-05 | 沖電気工業株式会社 | 内部電源回路 |
JPH1051963A (ja) * | 1996-08-05 | 1998-02-20 | Sanyo Electric Co Ltd | バッテリー残量検出装置 |
JP3526719B2 (ja) * | 1997-03-19 | 2004-05-17 | 富士通株式会社 | 自動閾値制御回路および信号増幅回路 |
JP3863262B2 (ja) * | 1997-09-30 | 2006-12-27 | 松下電器産業株式会社 | 電池電圧測定装置 |
JPH11258280A (ja) | 1998-03-09 | 1999-09-24 | Toshiba Battery Co Ltd | 二次電池の電圧検出装置および二次電池装置 |
JP3578043B2 (ja) * | 2000-04-14 | 2004-10-20 | 松下電器産業株式会社 | 電源電圧検出回路 |
US6906568B2 (en) * | 2001-03-30 | 2005-06-14 | Via Technologies, Inc. | Hysteresis comparing device with constant hysteresis width and the method thereof |
JP2004198335A (ja) * | 2002-12-20 | 2004-07-15 | Seiko Instruments Inc | 電圧検出回路 |
JP4023423B2 (ja) * | 2003-09-16 | 2007-12-19 | ソニー株式会社 | 携帯機器 |
TWI240490B (en) * | 2003-11-27 | 2005-09-21 | Via Tech Inc | Hysteresis circuit device with modulated hysteresis voltage levels |
-
2004
- 2004-02-23 JP JP2004045739A patent/JP4033472B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-15 US US10/598,279 patent/US7446574B2/en not_active Expired - Fee Related
- 2005-02-15 WO PCT/JP2005/002273 patent/WO2005080997A1/ja active Application Filing
- 2005-02-15 KR KR1020067016908A patent/KR20070029135A/ko not_active Application Discontinuation
- 2005-02-15 EP EP05710223A patent/EP1722242A1/en not_active Withdrawn
- 2005-02-15 CN CNB2005800057437A patent/CN100460877C/zh not_active Expired - Fee Related
- 2005-02-22 TW TW094105267A patent/TW200533929A/zh not_active IP Right Cessation
-
2008
- 2008-10-03 US US12/244,810 patent/US7639049B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55125576U (ja) * | 1979-02-28 | 1980-09-05 | ||
JPH11248761A (ja) * | 1998-03-05 | 1999-09-17 | Texas Instr Japan Ltd | 電圧比較回路 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113533976A (zh) * | 2021-02-08 | 2021-10-22 | 山东中信迪生电源有限公司 | 锂电池组综合检测方法及电路 |
Also Published As
Publication number | Publication date |
---|---|
US7639049B2 (en) | 2009-12-29 |
TWI367333B (ja) | 2012-07-01 |
JP4033472B2 (ja) | 2008-01-16 |
JP2005233861A (ja) | 2005-09-02 |
US7446574B2 (en) | 2008-11-04 |
CN100460877C (zh) | 2009-02-11 |
US20080061841A1 (en) | 2008-03-13 |
CN1922497A (zh) | 2007-02-28 |
US20090039921A1 (en) | 2009-02-12 |
TW200533929A (en) | 2005-10-16 |
KR20070029135A (ko) | 2007-03-13 |
EP1722242A1 (en) | 2006-11-15 |
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