CN103699204A - System power consumption regulating circuit, method and electronic equipment - Google Patents
System power consumption regulating circuit, method and electronic equipment Download PDFInfo
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- CN103699204A CN103699204A CN201310625860.XA CN201310625860A CN103699204A CN 103699204 A CN103699204 A CN 103699204A CN 201310625860 A CN201310625860 A CN 201310625860A CN 103699204 A CN103699204 A CN 103699204A
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Abstract
The invention discloses a system power consumption regulating circuit, a system power consumption regulating method and electronic equipment. The circuit comprises a system current detection circuit, a power supply management circuit and a CPU (Central Processing Unit) core voltage regulating circuit, wherein the system current detection circuit is used for detecting current in a system and outputting a detected current magnitude signal to the CPU core voltage regulating circuit; the CPU core voltage regulating circuit is used for receiving the current magnitude signal transmitted by the system current detection circuit and feeding back a core voltage regulating signal to the power supply management circuit according to the current magnitude signal; the power supply management circuit is used for regulating core voltage which is output to a system CPU according to the core voltage regulating signal to regulate the power consumption of the system. By adopting the technical scheme provided by the invention, when the system works, the magnitude of the current in the system is detected and the core voltage output to the CPU is regulated according to the magnitude of the current, so as to achieve the goals of regulating the power consumption of the system, reducing the situations that system emits heat and components are heavily overloaded with work and prolonging the service life of the system.
Description
Technical field
The present invention relates to system power dissipation control field, particularly a kind of system power dissipation regulating circuit, method and electronic equipment.
Background technology
System power dissipation is controlled in traditional circuit, be mainly with electric power management circuit directly to system power supply, the core voltage that outputs to system CPU is constant, the output voltage that system cannot active adjustment electric power management circuit.
When system works, the working load of CPU and peripheral circuit duty can change, and system power also can correspondingly change, and when system power increases, may cause system heating and element in distress work, thus damage system or reduction lifetime of system.When system power reduces, may cause the underutilization of system CPU, the work efficiency of system is lower.
Summary of the invention
The invention provides a kind of system power dissipation regulating circuit, method and electronic equipment, the problem of the adverse effect of system power dissipation being brought with resolution system curent change.
According to an aspect of the present invention, provide a kind of system power dissipation regulating circuit, this circuit comprises: system power testing circuit, electric power management circuit and CPU core voltage regulating circuit.
System power testing circuit, for detection of the electric current in system, and exports to CPU core voltage regulating circuit by the size of current signal detecting.
CPU core voltage regulating circuit, the size of current signal sending for receiving system current detection circuit, feeds back core voltage conditioning signal according to this size of current signal to electric power management circuit.
Electric power management circuit, for the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
In one embodiment of the invention, CPU core voltage regulating circuit is integrated in system CPU, and system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port.
The A/D port of system CPU is connected with described system power testing circuit, the size of current signal sending by this A/D port receiving system current detection circuit.
The D/A port of system CPU and the feedback end of electric power management circuit are connected, and by this D/A port, to electric power management circuit, feed back core voltage conditioning signal.
The core voltage input end of the voltage output end of electric power management circuit and system CPU is connected, and the core voltage of system CPU is provided.
In one embodiment of the invention, system power testing circuit comprises: detect resistance, operational amplifier;
The in-phase input end that detects one end of resistance and the positive pole of power supply and operational amplifier is connected;
The voltage input end that detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected;
The A/D port of the output terminal of operational amplifier and system CPU is connected;
The minus earth of power supply.
In one embodiment of the invention, CPU core voltage regulating circuit comprises to electric power management circuit feedback core voltage conditioning signal: when CPU core voltage regulating circuit determines that according to size of current signal system power overloads, the signal overloading to electric power management circuit feedback system electric current, so that electric power management circuit reduces the core voltage that outputs to system CPU according to this feedback signal; And while determining that according to size of current signal system power reduces, the signal reducing to electric power management circuit transmitting system electric current is so that electric power management circuit improves the core voltage that outputs to system CPU according to this feedback signal;
Or
CPU core voltage regulating circuit, by increasing the voltage of the feedback end of electric power management circuit, reduces the signal of the core voltage that outputs to system CPU to electric power management circuit feedback;
CPU core voltage regulating circuit, by reducing the voltage of the feedback end of electric power management circuit, improves the signal of the core voltage that outputs to system CPU to electric power management circuit feedback.
According to another aspect of the present invention, provide a kind of electronic equipment, this equipment comprises power supply, system CPU and the system power dissipation regulating circuit as described in one aspect of the invention; Power supply connects the system power testing circuit of described system power dissipation regulating circuit, and system CPU comprises or connect the CPU core voltage regulating circuit of described system power dissipation regulating circuit.
The present invention also provides a kind of system power dissipation control method, and the method comprises:
Detection system size of current also outputs signal to system CPU;
System CPU receives system power high low signal and to electric power management circuit feedback core voltage conditioning signal, electric power management circuit is the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
In one embodiment of the invention, detection system size of current output signal to system CPU and comprise:
Arrange one and detect resistance and an operational amplifier; The in-phase input end that order detects one end of resistance R 1 and the positive pole of power supply and operational amplifier is connected.
The input end that order detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected; Make the output terminal of operational amplifier be connected with system CPU, the minus earth of power supply.
In one embodiment of the invention, system CPU receiving system size of current signal comprises: system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port;
Make the A/D port of system CPU be connected with the output terminal of operational amplifier, by this A/D port receiving system size of current signal;
Make the D/A port of system CPU and the feedback end of electric power management circuit be connected, by this D/A port, to electric power management circuit, feed back core voltage conditioning signal;
Make the voltage output end of electric power management circuit and the core voltage input end of system CPU be connected, the core voltage of system CPU is provided.
In one embodiment of the invention, system CPU receives system power high low signal and comprises to electric power management circuit feedback core voltage conditioning signal: when system CPU detects system power and overloads, the signal overloading to electric power management circuit transmitting system electric current, electric power management circuit is received after signal, reduces the core voltage that outputs to system CPU;
When system CPU detects system power and reduces, the signal reducing to electric power management circuit transmitting system electric current, electric power management circuit is received after signal, improves the core voltage that outputs to system CPU.
In one embodiment of the invention, system CPU receives system power high low signal and comprises to electric power management circuit feedback core voltage conditioning signal:
System CPU, by increasing the voltage of the feedback end of electric power management circuit, reduces to electric power management circuit feedback the signal that outputs to system CPU core voltage;
System CPU, by reducing the voltage of the feedback end of electric power management circuit, improves to electric power management circuit feedback the signal that outputs to system CPU core voltage.
This system power dissipation regulating circuit provided by the invention, method and electronic equipment, when system works, by size of current in detection system, according to the size adjustment of system power, output to the core voltage of CPU, thereby reach regulating system power consumption, the generation of the heating of minimizing system and element in distress working condition, improves the order of lifetime of system.In addition, the present invention also provides a kind of electronic equipment based on said system regulating power consumption circuit.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of system power dissipation regulating circuit of providing of one embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Core concept of the present invention is when system works; size of current in detection system; and the size of current detecting is passed to central processing unit (the Central Processing Unit of system; abbreviation CPU) by CPU, the size of electric current in system is fed back to the electric power management circuit of system; electric power management circuit and then regulation output are to the core voltage of system CPU; by the core voltage of regulating system CPU, reach regulating system power consumption, the element in protection system and the object of system.
Fig. 1 is the circuit diagram of a kind of system power dissipation regulating circuit of providing of one embodiment of the invention, referring to Fig. 1, this system power dissipation regulating circuit that one embodiment of the invention provides comprises system power testing circuit, electric power management circuit and the CPU core voltage regulating circuit forming by detecting resistance and operational amplifier.
System power testing circuit, for detection of the electric current in system, and exports to CPU core voltage regulating circuit by the size of current signal detecting.
CPU core voltage regulating circuit, the size of current signal sending for receiving system current detection circuit, feeds back core voltage conditioning signal according to this size of current signal to electric power management circuit.
Electric power management circuit, for the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
Referring to Fig. 1, in one embodiment of the invention, CPU core voltage regulating circuit is integrated in system CPU, and system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port.
The A/D port of system CPU is connected with described system power testing circuit, the size of current signal sending by this A/D port receiving system current detection circuit.
The D/A port of system CPU and the feedback end of electric power management circuit are connected, and by this D/A port, to electric power management circuit, feed back core voltage conditioning signal.
The core voltage input end of the voltage output end of electric power management circuit and system CPU is connected, and the core voltage of system CPU is provided.
In one embodiment of the invention, system power testing circuit comprises: detect resistance, operational amplifier.
The in-phase input end that detects one end of resistance and the positive pole of power supply and operational amplifier is connected.
The voltage input end that detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected.
The A/D port of the output terminal of operational amplifier and system CPU is connected.
The minus earth of power supply.
In one embodiment of the invention, CPU core voltage regulating circuit, when determining that according to size of current signal system power overloads, the signal overloading to electric power management circuit feedback system electric current; Electric power management circuit receives after this signal, reduces the core voltage that outputs to system CPU.
CPU core voltage regulating circuit, when determining that according to size of current signal system power reduces, the signal reducing to electric power management circuit transmitting system electric current; Electric power management circuit is received after this signal, improves the core voltage that outputs to system CPU.
In one embodiment of the invention, CPU core voltage regulating circuit, to electric power management circuit feedback core voltage conditioning signal, comprise: CPU core voltage regulating circuit, by increasing the voltage of the feedback end of electric power management circuit, reduces the signal of the core voltage that outputs to system CPU to electric power management circuit feedback.
CPU core voltage regulating circuit, by reducing the voltage of the feedback end of electric power management circuit, improves the signal of the core voltage that outputs to system CPU to electric power management circuit feedback.
Referring to Fig. 1, particularly, system power dissipation adjustment process is: when system works, the two ends of detecting resistance R 1 can produce voltage signal, and amplifier will send the A/D port of CPU, the variation that CPU removes detection system electric current by detecting the voltage at resistance R 1 two ends to after the voltage signal conversion at R1 two ends, and by the feedback voltage of D/A delivery outlet control electric power management circuit, regulation output, to the core voltage of CPU, is adjusted the work dominant frequency of CPU, thereby reaches the target of regulating system power consumption.
When the electric current in system increases, the voltage that detects resistance R 1 two ends also can increase, when CPU overloads to system power by A/D Port detecting, by the D/A port of CPU, increase the feedback voltage of electric power management circuit, reduce and output to CPU core voltage, reduce the work dominant frequency of CPU, thereby reduce the power consumption of system.
When the electric current in system reduces, the voltage at R1 two ends also can reduce, CPU by A/D Port detecting to system's work-load compared with hour, by the D/A port of CPU, reduce the feedback voltage of electric power management circuit, improve the output of CPU core voltage, improve the work dominant frequency of CPU, thereby improve the work efficiency of system.
Referring to Fig. 1, in one embodiment of the invention, the resistance that detects resistance R 1 is 10 milliohms.In other embodiments of the invention, should to detecting resistance, select according to concrete circuit conditions.
This system power dissipation regulating circuit provided by the invention, by increasing an operational amplification circuit and a detection resistance for detection of system power in traditional circuit, and sends the CPU of system to.The CPU of system, according to size of current in system, sends the conditioning signal of the core voltage that outputs to CPU to electric power management circuit.By regulation output, arrive the core voltage of CPU, reach regulating system power consumption, the heating of minimizing system and element in distress work, the object of raising lifetime of system.
According to another aspect of the present invention, a kind of electronic equipment is provided, this equipment comprises power supply, system CPU and system power dissipation regulating circuit as shown in Figure 1, power supply connects the system power testing circuit of described system power dissipation regulating circuit, and described system CPU comprises or connect the CPU core voltage regulating circuit of described system power dissipation regulating circuit.In this electronic equipment owing to having adopted system power dissipation regulating circuit of the present invention, thereby regulating system power consumption effectively controllably reduces the generation of the situations such as the system heating of this electronic equipment and element in distress work, the serviceable life of improving this electronic equipment.
The present invention also provides a kind of system power dissipation control method, and the method comprises:
Detection system size of current also outputs signal to system CPU;
System CPU receives system power high low signal and to electric power management circuit feedback core voltage conditioning signal, electric power management circuit is the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
In one embodiment of the invention, detection system size of current output signal to system CPU and comprise:
Arrange one and detect resistance and an operational amplifier, the in-phase input end that order detects one end of resistance R 1 and the positive pole of power supply and operational amplifier is connected.
The input end that order detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected; Make the output terminal of operational amplifier be connected with system CPU, the minus earth of power supply.
In one embodiment of the invention, system CPU receiving system size of current signal comprising to electric power management circuit feedback core voltage conditioning signal: system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port.
Make the A/D port of system CPU be connected with the output terminal of operational amplifier, by this A/D port receiving system size of current signal.
Make the D/A port of system CPU and the feedback end of electric power management circuit be connected, by this D/A port, to electric power management circuit, feed back core voltage conditioning signal.
Make the voltage output end of electric power management circuit and the core voltage input end of system CPU be connected, the core voltage of system CPU is provided.
In one embodiment of the invention, according to core voltage conditioning signal regulation output, the core voltage to system CPU comprises electric power management circuit:
When system CPU detects system power and overloads, the signal overloading to electric power management circuit transmitting system electric current, electric power management circuit is received after signal, reduces the core voltage that outputs to system CPU.
When system CPU detects system power and reduces, the signal reducing to electric power management circuit transmitting system electric current, electric power management circuit is received after signal, improves the core voltage that outputs to system CPU.
In one embodiment of the invention, system CPU receives system power high low signal and comprises to electric power management circuit feedback core voltage conditioning signal:
System CPU, by increasing the voltage of the feedback end of electric power management circuit, reduces to electric power management circuit feedback the signal that outputs to system CPU core voltage;
System CPU, by reducing the voltage of the feedback end of electric power management circuit, improves to electric power management circuit feedback the signal that outputs to system CPU core voltage.
In sum, this system power dissipation regulating circuit, method and the electronic equipment of technical solution of the present invention, effectively regulation output is to the core voltage of system CPU, thus regulating system power consumption, the generation of the situations such as the heating of minimizing system and element in distress work, improves lifetime of system.In addition, the present invention also provides a kind of electronic equipment based on said system regulating power consumption circuit.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a system power dissipation regulating circuit, is characterized in that, described circuit comprises: system power testing circuit, electric power management circuit and CPU core voltage regulating circuit;
Described system power testing circuit, for detection of the electric current in system, and exports to described CPU core voltage regulating circuit by the size of current signal detecting;
Described CPU core voltage regulating circuit, the size of current signal sending for receiving described system power testing circuit, feeds back core voltage conditioning signal according to this size of current signal to described electric power management circuit;
Described electric power management circuit, for the core voltage to system CPU according to described core voltage conditioning signal regulation output, thus the power consumption of regulating system.
2. circuit as claimed in claim 1, is characterized in that, described CPU core voltage regulating circuit is integrated in described system CPU, and described system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port;
The A/D port of described system CPU is connected with described system power testing circuit, by this A/D port, receives the size of current signal that described system power testing circuit sends;
The D/A port of described system CPU and the feedback end of described electric power management circuit are connected, and by this D/A port, to described electric power management circuit, feed back core voltage conditioning signal;
The core voltage input end of the voltage output end of described electric power management circuit and described system CPU is connected, and the core voltage of described system CPU is provided.
3. circuit as claimed in claim 2, is characterized in that, described system power testing circuit comprises: detect resistance, operational amplifier;
The in-phase input end anodal and described operational amplifier of one end of described detection resistance and power supply is connected;
The other end of described detection resistance is connected with the voltage input end of the inverting input of described operational amplifier and described electric power management circuit;
The A/D port of the output terminal of described operational amplifier and described system CPU is connected;
The minus earth of power supply.
4. circuit as claimed any one in claims 1 to 3, is characterized in that, described CPU core voltage regulating circuit comprises to electric power management circuit feedback core voltage conditioning signal:
When described CPU core voltage regulating circuit determines that according to described size of current signal system power overloads, the signal overloading to electric power management circuit feedback system electric current, so that electric power management circuit reduces the core voltage that outputs to described system CPU according to this feedback signal; And while determining that according to described size of current signal system power reduces, the signal reducing to described electric power management circuit transmitting system electric current is so that described electric power management circuit improves the core voltage that outputs to described system CPU according to this feedback signal;
Or
Described CPU core voltage regulating circuit, by increasing the voltage of the feedback end of described electric power management circuit, reduces the signal of the core voltage that outputs to system CPU to described electric power management circuit feedback;
Described CPU core voltage regulating circuit, by reducing the voltage of the feedback end of described electric power management circuit, improves the signal of the core voltage that outputs to system CPU to described electric power management circuit feedback.
5. an electronic equipment, is characterized in that, this equipment comprises power supply, system CPU and the system power dissipation regulating circuit as described in any one in claim 1 to 4; Described power supply connects the system power testing circuit of described system power dissipation regulating circuit, and described system CPU comprises or connect the CPU core voltage regulating circuit of described system power dissipation regulating circuit.
6. a system power dissipation control method, is characterized in that, described method comprises:
Detection system size of current also outputs signal to system CPU;
System CPU receives system power high low signal and feeds back core voltage conditioning signal to electric power management circuit;
Electric power management circuit is the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
7. method as claimed in claim 6, is characterized in that, described detection system size of current also outputs signal to system CPU and comprises:
Arrange one and detect resistance and an operational amplifier;
The in-phase input end that order detects one end of resistance R 1 and the positive pole of power supply and operational amplifier is connected;
The input end that order detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected;
Make the output terminal of operational amplifier be connected with system CPU,
The minus earth of power supply.
8. method as claimed in claim 6, is characterized in that, described system CPU receiving system size of current signal comprises:
System CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port;
Make the A/D port of system CPU be connected with the output terminal of described operational amplifier, by this A/D port receiving system size of current signal;
Make the D/A port of system CPU and the feedback end of electric power management circuit be connected, by this D/A port, to electric power management circuit, feed back core voltage conditioning signal;
Make the voltage output end of electric power management circuit and the core voltage input end of system CPU be connected, the core voltage of system CPU is provided.
9. the method as described in any one in claim 6 to 8, is characterized in that, described system CPU receives system power high low signal and comprises to electric power management circuit feedback core voltage conditioning signal:
When system CPU detects system power and overloads, the signal overloading to electric power management circuit transmitting system electric current;
When system CPU detects system power and reduces, the signal reducing to electric power management circuit transmitting system electric current.
10. the method as described in any one in claim 6 to 8, is characterized in that, described system CPU receives system power high low signal and comprises to electric power management circuit feedback core voltage conditioning signal:
Described system CPU, by increasing the voltage of the feedback end of electric power management circuit, reduces to electric power management circuit feedback the signal that outputs to system CPU core voltage;
Described system CPU, by reducing the voltage of the feedback end of electric power management circuit, improves to electric power management circuit feedback the signal that outputs to system CPU core voltage.
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| CN201310625860.XA CN103699204A (en) | 2013-11-28 | 2013-11-28 | System power consumption regulating circuit, method and electronic equipment |
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| CN201310625860.XA CN103699204A (en) | 2013-11-28 | 2013-11-28 | System power consumption regulating circuit, method and electronic equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573391A (en) * | 2016-03-04 | 2016-05-11 | 哈尔滨工业大学深圳研究生院 | Open-circuit voltage control circuit of solar array simulator and open-circuit voltage control method thereof |
| CN107102631A (en) * | 2017-04-10 | 2017-08-29 | 成都因纳维特科技有限公司 | A kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number |
| CN107193229A (en) * | 2017-04-06 | 2017-09-22 | 联想(北京)有限公司 | A kind of control method and electronic equipment |
| CN109313694A (en) * | 2016-06-10 | 2019-02-05 | 微软技术许可有限责任公司 | Safe input voltage adjustment in processing equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293480A (en) * | 1999-10-18 | 2001-05-02 | 神基科技股份有限公司 | Control device and method for changing charge current with system load |
| CN1554992A (en) * | 2003-12-25 | 2004-12-15 | 上海交通大学 | Automatic voltage stabilizing regulation power source with variable far end load |
| CN101999105A (en) * | 2008-04-08 | 2011-03-30 | 惠普开发有限公司 | Voltage regulator |
| US20130141070A1 (en) * | 2011-12-01 | 2013-06-06 | Intersil Americas LLC | Control system and method for shared inductor regulator |
-
2013
- 2013-11-28 CN CN201310625860.XA patent/CN103699204A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293480A (en) * | 1999-10-18 | 2001-05-02 | 神基科技股份有限公司 | Control device and method for changing charge current with system load |
| CN1554992A (en) * | 2003-12-25 | 2004-12-15 | 上海交通大学 | Automatic voltage stabilizing regulation power source with variable far end load |
| CN101999105A (en) * | 2008-04-08 | 2011-03-30 | 惠普开发有限公司 | Voltage regulator |
| US20130141070A1 (en) * | 2011-12-01 | 2013-06-06 | Intersil Americas LLC | Control system and method for shared inductor regulator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573391A (en) * | 2016-03-04 | 2016-05-11 | 哈尔滨工业大学深圳研究生院 | Open-circuit voltage control circuit of solar array simulator and open-circuit voltage control method thereof |
| CN105573391B (en) * | 2016-03-04 | 2017-06-30 | 哈尔滨工业大学深圳研究生院 | Open-circuit voltage control circuit and its open-circuit voltage control method of sun battle array simulator |
| CN109313694A (en) * | 2016-06-10 | 2019-02-05 | 微软技术许可有限责任公司 | Safe input voltage adjustment in processing equipment |
| CN109313694B (en) * | 2016-06-10 | 2022-04-12 | 微软技术许可有限责任公司 | Safe input voltage regulation in a processing device |
| CN107193229A (en) * | 2017-04-06 | 2017-09-22 | 联想(北京)有限公司 | A kind of control method and electronic equipment |
| CN107102631A (en) * | 2017-04-10 | 2017-08-29 | 成都因纳维特科技有限公司 | A kind of system and method for controlling vehicle mounted guidance terminal cpu frequency and running number |
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Application publication date: 20140402 |