WO2018045770A1 - 控制电路、控制方法和电子设备 - Google Patents

控制电路、控制方法和电子设备 Download PDF

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Publication number
WO2018045770A1
WO2018045770A1 PCT/CN2017/083206 CN2017083206W WO2018045770A1 WO 2018045770 A1 WO2018045770 A1 WO 2018045770A1 CN 2017083206 W CN2017083206 W CN 2017083206W WO 2018045770 A1 WO2018045770 A1 WO 2018045770A1
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Prior art keywords
control
circuit
signal
sub
power
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PCT/CN2017/083206
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English (en)
French (fr)
Inventor
刘松林
Original Assignee
京东方科技集团股份有限公司
高创(苏州)电子有限公司
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Priority to US15/566,370 priority Critical patent/US10298180B2/en
Priority to EP17825090.8A priority patent/EP3512095A4/en
Publication of WO2018045770A1 publication Critical patent/WO2018045770A1/zh

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/26Modifications of amplifiers to reduce influence of noise generated by amplifying elements
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/303Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/213Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H03F3/245Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02Details of power systems and of start or stop of display operation
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02Details of power systems and of start or stop of display operation
    • G09G2330/026Arrangements or methods related to booting a display
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02Details of power systems and of start or stop of display operation
    • G09G2330/027Arrangements or methods related to powering off a display
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/372Noise reduction and elimination in amplifier
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/516Some amplifier stages of an amplifier use supply voltages of different value

Definitions

  • the application relates to a control circuit, a control method, and an electronic device.
  • power amplifier integrated circuit (IC) modules are typically built into display devices such as displays and televisions to enable audio output to be provided in the display device.
  • the display device equipped with the power amplifier IC continues to operate during the power-on and power-off processes because the power amplifier IC is supplied with a voltage, which may cause noise of buzzing during the power-on and power-off process.
  • control circuit a control method, and a display device that can completely avoid the occurrence of clicks during the power-on and turn-off process, thereby improving the user experience.
  • a control circuit including:
  • a first control sub-circuit configured to receive a first power signal from a power sub-circuit in an electronic device including the control circuit, and output a first control signal
  • a second control sub-circuit configured to receive a second power signal from a power sub-circuit of the electronic device, and output a second control signal under control of the first control signal
  • the second control signal is used to control the first function sub-circuit in the electronic device to be disabled during power-on and power-off of the electronic device.
  • the first function sub-circuit is a power amplifier sub-circuit
  • the power amplifier sub-circuit When the second control signal is at a first level, the power amplifier sub-circuit is disabled;
  • the power amplifier sub-circuit is enabled when the second control signal is at a second level.
  • the second power signal is different from the first power signal, and the second power signal is obtained by converting a first power signal.
  • control circuit further includes:
  • a third control sub-circuit configured to receive a third power signal from a power sub-circuit of the electronic device Number and output a third control signal
  • the first control sub-circuit outputs the first control signal under the control of the third control signal.
  • the first control sub-circuit includes a first transistor, a drain of the first transistor is connected to the first power sub-circuit to receive the first power signal, and a gate connection of the first transistor Go to the third control sub-circuit to receive the third control signal, the source of the first transistor is grounded, and the first control signal is output at a drain of the first transistor,
  • a level of the first control signal is the same as a level of the first power signal
  • the level of the first control signal is a first level.
  • the third control sub-circuit includes a Zener diode, an opposite end of the Zener diode is connected to the third power signal, and a forward end is connected to a gate of the first transistor to output Said third control signal,
  • the third control sub-circuit outputs the third level of the third control signal during power-on of the electronic device and when the third power signal does not reach a predetermined value;
  • the third control sub-circuit outputs the third level of the third control signal when the power-on process of the electronic device ends and the third power signal reaches a predetermined value.
  • the second control sub-circuit includes a second transistor, a gate of the second transistor receives the first control signal output by the first control sub-circuit, and a drain of the second transistor receives a second power signal output by the second power sub-circuit, a source of the second transistor being grounded, and a second control signal being outputted at a drain of the second transistor,
  • a level of the second control signal is the same as a level of the second power signal
  • the level of the second control signal is a first level.
  • control circuit further includes:
  • a fourth control subcircuit configured to receive a set signal from the electronic device and to control a level of the second control signal in accordance with the set signal.
  • the fourth control sub-circuit includes a third transistor, a gate of the third transistor receives the setting signal, and a drain of the third transistor receives a second output of the second control sub-circuit a control signal, a source of the third transistor is grounded,
  • the level of the second control signal is the same as the level of the second power signal
  • the level of the second control signal is a first level.
  • the second control signal is used to control the first function sub-circuit in the electronic device to be disabled during power-on and power-off of the electronic device.
  • the method further includes:
  • the first control sub-circuit outputs the first control signal under the control of the third control signal
  • a level of the first control signal is the same as a level of the first power signal
  • the level of the first control signal is a first level.
  • the method further includes:
  • the level of the second control signal is the same as the level of the second power signal
  • the level of the second control signal is a first level.
  • an electronic device including:
  • a power sub-circuit configured to provide a first power signal, a second power signal, and a third power signal
  • a first functional sub-circuit configured to perform a first functional operation
  • control circuit the control method, and the display device of the embodiments of the present application, it is possible to completely avoid the problem of clicks occurring during the power-on and off process, thereby improving the user experience.
  • FIG. 1 is a block diagram showing the configuration of a control circuit according to a first embodiment of the present invention
  • FIG. 2 is a circuit diagram illustrating a control circuit in accordance with a first embodiment of the present invention
  • FIG. 3 is a timing chart illustrating an operation of a control circuit according to a first embodiment of the present application
  • FIG. 4 is a block diagram showing a configuration of a control circuit according to a second embodiment of the present application.
  • FIG. 5 is a circuit diagram illustrating a control circuit according to a second embodiment of the present application.
  • FIG. 6 is a logic diagram illustrating a second embodiment according to the present application.
  • FIG. 7 is a flowchart illustrating a control method according to a third embodiment of the present application.
  • FIG. 8 is a flowchart illustrating a control method according to a fourth embodiment of the present application.
  • FIG. 9 is a block diagram illustrating a configuration of a display device according to a fifth embodiment of the present application.
  • control circuit can be applied to any electronic device as long as the electronic device includes a power amplifier sub-circuit.
  • Examples of such electronic devices may include displays, televisions, smart phones, tablets, and the like.
  • FIGS. 1 and 2 are block diagram showing the configuration of a control circuit according to a first embodiment of the present invention.
  • a control circuit 100 includes a first control sub-circuit 101, a second control sub-circuit 102, and a third control sub-circuit 103.
  • the first control sub-circuit 101 receives the first power supply signal VDD1 from a power supply sub-circuit in the electronic device including the control circuit.
  • the VDD1 is, for example, a 5V voltage in the power board of the electronic device, which can, for example, supply power to various circuit components in the board.
  • the first control sub-circuit 101 outputs a first control signal Sctl1 to the second control sub-circuit 102 for controlling the signal output of the second control sub-circuit 102.
  • the second control subcircuit 102 receives the second power signal VDD2 from the power subcircuit of the electronic device.
  • the VDD2 is, for example, a 3.3V voltage in a power board of an electronic device that can, for example, power a CPU in an electronic device, various integrated ICs such as a Scalar IC.
  • the second control sub-circuit 102 may output the second control signal Sctr2 under the control of the first control signal.
  • the second control signal Sctr2 is used to control an operating state of the first function sub-circuit in the electronic device, for example, the first function sub-circuit is, for example, a power amplifier sub-circuit included in the electronic device.
  • the first functional sub-circuit is not limited to the power amplifier sub-circuit.
  • the first functional sub-circuit may also be such as a camera, a flash, an antenna element, or the like.
  • the third control sub-circuit 103 receives the third power signal VDD3 from the power sub-circuit of the electronic device.
  • the VDD3 is, for example, a 12V voltage in a power board of an electronic device, and the 12V voltage may be, for example, a backlight-driven voltage in an electronic device.
  • the third control sub-circuit 103 outputs a third control signal to the first control circuit 101.
  • the first control sub-circuit 101 outputs the first control signal under the control of the third control signal.
  • the second control signal may be made the first power during the power-on and power-off of the electronic device.
  • the power amplifier sub-circuit Since the second control signal is connected to the control pin of the power amplifier sub-circuit of the electronic device, the power amplifier sub-circuit is disabled when the second control signal is low. On the other hand, when the second control signal is at a high level, the power amplifier sub-circuit is enabled.
  • the power amplifier sub-circuit can be disabled. In this case, the electronic device does not generate a click during the power-on and power-off of the electronic device.
  • FIG. 2 is a circuit diagram illustrating a control circuit according to a first embodiment of the present invention.
  • the first control sub-circuit 101 includes a first transistor Q5, a diode D2, a capacitor C3, and resistors R2 and R3.
  • the drain of the first transistor Q5 is coupled to the first power sub-circuit VDD1 of the electronic device to receive a first power signal (eg, a 5V voltage of the system).
  • the gate of the first transistor Q5 is coupled to the third control sub-circuit 103 to receive a third control signal.
  • the source of the first transistor Q5 is grounded.
  • a first control signal Sctr1 is outputted at the drain of the first transistor Q5.
  • the third control sub-circuit 103 includes a Zener diode ZD1 and a resistor R1.
  • the inverting terminal of the Zener diode ZD1 is connected to a third power signal VDD3 of the electronic device (eg, a 12V voltage of the system).
  • a forward terminal of the Zener diode ZD1 is connected to a gate of the first transistor Q5 to output the third control signal Sctr3.
  • the Zener diode ZD1 is used, for example, to provide a regulated signal equal to the third power signal, ie, 12V. That is to say, when the third power signal does not reach 12V, the Zener diode ZD1 is not turned on. At this time, the third control signal Sctr3 applied to the gate of the first transistor Q5 is at a low level, that is, 0V. On the other hand, when the third power signal reaches 12V, the Zener diode ZD1 is broken down and turned on. At this time, the third control signal Sctr3 applied to the gate of the first transistor Q5 is at a high level.
  • the second control subcircuit 102 includes a second transistor Q7, resistors R4 and R5.
  • the gate of the second transistor Q7 receives the first control signal Sctr1 output by the first control sub-circuit 101.
  • the drain of the second transistor Q7 receives a second power signal (eg, a 3.3V voltage of the system) output by the second power sub-circuit VDD2 of the electronic device.
  • the source of the second transistor Q7 is grounded.
  • the second control signal Sctr2 is outputted to the drain of the second transistor Q7.
  • the third control signal Sctr3 When the third control signal Sctr3 is at a low level, the first transistor Q5 is turned off. At this time, the level of the first control signal Sctr1 is the same as the level of the first power signal VDD1.
  • the third control signal Sctr3 is at a high level
  • the first transistor Q5 is turned on.
  • the level of the first control signal Sctr1 is a low level.
  • the second transistor Q7 is turned off. At this time, the level of the second control signal Sctr2 is the same as the level of the second power signal.
  • the level of the first control signal Sctr1 is the same as the level of the first power signal
  • the voltage of the first power signal is greater than the turn-on voltage of the second transistor Q7
  • the second The transistor Q7 is turned on, and at this time, the level of the second control signal Sctr2 is at a low level.
  • FIG. 3 is a timing chart illustrating an operation of a control circuit according to a first embodiment of the present application.
  • the power sub-circuit of the electronic device starts to work.
  • the first power signal VDD1 gradually increases from 0V to 5V
  • the third power signal VDD3 gradually increases from 0V to 12V.
  • the second power signal VDD2 is obtained by converting from the first power signal VDD1. Therefore, as shown in FIG. 3, when the first power signal VDD1 reaches 5V, the second power signal VDD2 is Start to gradually increase from 0V to 3.3V.
  • the level of the first control signal Sctr1 is the same as the level of the first power supply signal VDD1, and gradually increases from 0V to 5V, and remains at 5V. .
  • the second transistor Q7 is turned on, so the second control signal Sctr2 is kept at the low level.
  • the Zener diode ZD1 is broken, so the third control signal Sctr3 changes from a low level to a high level.
  • the first transistor Q5 is turned on, and thus the first control signal Sctr1 changes from a high level to a low level.
  • the second transistor Q7 is turned off.
  • the second control signal Sctr2 becomes a high level, that is, a voltage value of the second power supply signal VDD2 (for example, 3.3 V).
  • the role of setting the second power signal VDD2 by the first power signal VDD1 in the embodiment of the present application is such that the second power signal VDD2 is delayed from the first power signal VDD1.
  • the second control signal Sctr2 outputs an erroneous control signal.
  • the first function sub-circuit such as the power amplifier sub-circuit is enabled, and at this time, the power amplifier sub-circuit is normal. jobs.
  • the power sub-circuit of the electronic device stops working.
  • the first power letter The number VDD1 gradually decreases from 5V to 0V
  • the second power supply signal VDD2 gradually decreases from 3.3V to 0V
  • the third power supply signal VDD3 gradually decreases from 12V to 0V.
  • the Zener diode ZD1 Since the voltage stabilizing voltage of the Zener diode ZD1 is 12V, the Zener diode ZD1 is turned off at the timing when the third power signal VDD3 is lowered from 12V. At this time, the third control signal Sctr3 changes from a high level to a low level.
  • the third control signal Sctr3 changes from the high level to the low level
  • the first transistor Q5 is turned off.
  • the first control signal Sctr1 becomes the same level as the first power supply signal VDD1, and gradually decreases from the high level 5V to 0V.
  • the second transistor Q7 is turned on. Therefore, the second control signal Sctr2 becomes a low level and remains until the off period T3 ends.
  • the problem of clicks occurring during the power-on and off process can be completely avoided, thereby improving the user experience.
  • FIGS. 4 and 5 is a block diagram showing the configuration of a control circuit according to a second embodiment of the present invention.
  • the control circuit 400 includes a first control sub-circuit 401, a second control sub-circuit 402, a third control sub-circuit 403, and a fourth control sub-circuit 404.
  • the control circuit 100 according to the second embodiment has a fourth control sub-circuit 404 as compared with the control circuit 100 according to the first embodiment.
  • first control sub-circuit 401 a first control sub-circuit 401, a second control sub-circuit 402, and a third control sub-circuit 403, and a first control sub-circuit 401, a second control sub-circuit 402, and a third control sub-circuit in the control circuit according to the first embodiment
  • the structure and connection of the 403 are basically the same, and a detailed description thereof is omitted here.
  • the fourth control sub-circuit 404 can receive the set signal from the electronic device and control the level of the second control signal according to the set signal.
  • the fourth control sub-circuit 404 includes a third transistor Q8, the gate of the third transistor Q8 receives a set signal Sset, and the drain of the third transistor Q8 receives the second control The second control signal output by the sub-circuit 402, the source of the third transistor Q8 is grounded.
  • the setting signal Sset is at a high level
  • the setting signal Sset is at a low level
  • the third transistor Q8 when the set signal Sset is at a low level, the third transistor Q8 is turned off, and the level of the second control signal Sctr2 is the same as the level of the second power signal VDD2. On the other hand, when the set signal Vset is at a high level, the third transistor Q8 is turned on, and the level of the second control signal Sctr2 is at a low level.
  • FIG. 6 is a diagram illustrating a logical truth value of a control circuit according to a second embodiment of the present application.
  • the function sub-circuit is disabled regardless of whether the set signal Sset is at a high level or a low level.
  • the mute function is set in the OSD menu of the electronic device, since the level of the second control signal Sctr2 for controlling the function sub-circuit such as the power amplifier sub-circuit is kept low, Therefore, the first functional sub-circuit such as the power amplifier sub-circuit is disabled, so that the problem of clicks during the booting process can be completely avoided.
  • the level of the second control signal Sctr2 for controlling the function sub-circuit such as the power amplifier sub-circuit can also be kept low by setting the mute function in the OSD menu of the electronic device. Flat so that the first functional sub-circuit such as the power amplifier sub-circuit is disabled.
  • the function sub-circuit such as the power amplifier sub-circuit can be more flexibly controlled by the further fourth control sub-circuit, thereby completely avoiding the problem of clicks during the power-on and switch-off process, thereby Improve the user experience.
  • control method according to a third embodiment of the present invention will be described with reference to FIG.
  • the control method according to the third embodiment of the present invention is applied to the control circuit described in the above embodiment.
  • FIG. 7 is a flowchart illustrating a control method according to a third embodiment of the present application. As shown in FIG. 7, the control method 700 according to the third embodiment of the present invention includes:
  • Step S701 receiving, by the first control sub-circuit, the first power signal from the power sub-circuit in the electronic device including the control circuit, and outputting the first control signal;
  • Step S702 receiving, by the second control sub-circuit, a second power signal from a power sub-circuit of the electronic device, and outputting a second control signal under the control of the first control signal,
  • the second control signal is used to control an operating state of the first function sub-circuit in the electronic device, and the second control signal is at a first level during power-on and power-off of the electronic device ( For example, low level).
  • the method 700 also includes:
  • the third control sub-circuit Receiving, by the third control sub-circuit, a third power signal from the power sub-circuit of the electronic device, and outputting a third control signal, wherein the first control sub-circuit is controlled by the third control signal a first control signal, when the third control signal is at a first level, a level of the first control signal is the same as a level of the first power signal; and when the third control signal is a At the three level, the level of the first control signal is the first level.
  • the control circuit of the first embodiment As described above with reference to the control circuit of the first embodiment, during the T1 period in which the electronic device is powered on, since the level of the second control signal Sctr2 for controlling the function sub-circuit such as the power amplifier sub-circuit is kept at a low level, the first functional sub-circuit such as the power amplifier sub-circuit is disabled, so that the problem of clicks during the booting process can be completely avoided.
  • the first function sub-circuit such as the power amplifier sub-circuit is Disabled, so that you can completely avoid the problem of humming during the boot process.
  • the problem of clicks occurring during the power-on and off process can be completely avoided, thereby improving the user experience.
  • FIG. 8 is a flowchart illustrating a control method according to a fourth embodiment of the present application. As shown in Figure 8, the root The control method 800 according to the third embodiment of the present invention includes:
  • Step S801 receiving, by the first control sub-circuit, the first power signal from the power sub-circuit in the electronic device including the control circuit, and outputting the first control signal;
  • Step S802 receiving, by the second control sub-circuit, a second power signal from a power sub-circuit of the electronic device, and outputting a second control signal under control of the first control signal, wherein the second The control signal is used to control an operating state of the first functional sub-circuit in the electronic device, and the second control signal is at a first level during power-on and power-off of the electronic device;
  • Step S803 receiving a setting signal from the electronic device by using a fourth control sub-circuit, and controlling a level of the second control signal according to the setting signal, wherein when the setting signal is low level, the second control The level of the signal is the same as the level of the second power signal; and when the set signal is high, the level of the second control signal is the first level.
  • the control method according to the fourth embodiment has more steps of receiving the setting signal than the control method according to the third embodiment.
  • the mute function is set in the OSD menu of the electronic device, since the level of the second control signal Sctr2 for controlling the function sub-circuit such as the power amplifier sub-circuit is kept low, Therefore, the first functional sub-circuit such as the power amplifier sub-circuit is disabled, so that the problem of clicks during the booting process can be completely avoided.
  • the level of the second control signal Sctr2 for controlling the function sub-circuit such as the power amplifier sub-circuit can also be kept low by setting the mute function in the OSD menu of the electronic device. Flat so that the first functional sub-circuit such as the power amplifier sub-circuit is disabled.
  • the function sub-circuit such as the power amplifier sub-circuit can be more flexibly controlled, and the problem of humming during the switching process is completely avoided. Thereby improving the user experience.
  • the electronic device can be any electronic device as long as the electronic device includes a functional sub-circuit such as a power amplifier sub-circuit. Examples of such electronic devices may include displays, televisions, smart phones, tablets, and the like.
  • the electronic device 900 includes:
  • the power sub-circuit 901 is configured to provide a first power signal, a second power signal, and a third power signal;
  • a first functional sub-circuit 902 configured to perform a first functional operation
  • the control circuit may be the control circuit 100 in the first embodiment above or the control circuit 400 in the second embodiment above. Detailed description thereof is omitted here.
  • the level of the second control signal Sctr2 for controlling the first function sub-circuit 902 such as the power amplifier sub-circuit remains low during the T1 period in which the electronic device is powered on.
  • the first functional sub-circuit 902, such as the power amplifier sub-circuit is disabled, thereby completely avoiding the problem of clicks during the boot process.
  • the first function sub-circuit 902 such as the power amplifier sub-circuit
  • the first function such as the power amplifier sub-circuit
  • the sub-circuit 902 is disabled so that the problem of clicks during the booting process can be completely avoided.
  • the problem of clicks occurring during the power-on and off process can be completely avoided, thereby improving the user experience.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Automation & Control Theory (AREA)
  • Electronic Switches (AREA)
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Abstract

一种控制电路(100,400,903)、控制方法和电子设备(900)。控制电路(100,400,903)包括:第一控制子电路(101,401),配置为从包括控制电路(100,400,903)的电子设备(900)中的电源子电路(901)接收第一电源信号(VDD1),并且输出第一控制信号(Sctr1);第二控制子电路(102,402),配置为从电子设备(900)的电源子电路(901)接收第二电源信号(VDD2),并且在第一控制信号(Sctr1)的控制下,输出第二控制信号(Sctr2),其中,第二控制信号(Sctr2)用于控制电子设备(900)中的第一功能子电路(902)在电子设备(900)的开机和关机期间被禁用。

Description

控制电路、控制方法和电子设备 技术领域
本申请涉及控制电路、控制方法和电子设备。
背景技术
目前,诸如显示器、电视机的显示装置中通常内置有功放集成电路(IC)模块从而能够在显示装置中提供音频输出。然而,配置有功放IC的显示装置在开机和关机过程中,由于功放IC被提供有电压而继续工作,所以会导致有开关机过程中出现噗噗声的噪声。
为此,期望提供一种控制电路、控制方法和显示装置,其能够完全避免开关机过程中出现噗噗声的问题,从而提高用户体验。
发明内容
根据本申请实施例,提供了一种控制电路,包括:
第一控制子电路,配置为从包括所述控制电路的电子设备中的电源子电路接收第一电源信号,并且输出第一控制信号;
第二控制子电路,配置为从所述电子设备的电源子电路接收第二电源信号,并且在所述第一控制信号的控制下,输出第二控制信号,
其中,所述第二控制信号用于控制所述电子设备中的第一功能子电路在所述电子设备的开机和关机期间被禁用。
可选地,所述第一功能子电路是功放子电路,
当所述第二控制信号为第一电平时,所述功放子电路被禁用;以及
当所述第二控制信号为第二电平时,所述功放子电路被使能。
可选地,所述第二电源信号与所述第一电源信号不同,并且所述第二电源信号由通过转换第一电源信号获得。
可选地,所述控制电路还包括:
第三控制子电路,配置为从所述电子设备的电源子电路接收第三电源信 号,并且输出第三控制信号,
其中,所述第一控制子电路在所述第三控制信号的控制下,输出所述第一控制信号。
可选地,所述第一控制子电路包括第一晶体管,所述第一晶体管的漏极连接所述第一电源子电路以接收所述第一电源信号,所述第一晶体管的栅极连接到所述第三控制子电路以接收所述第三控制信号,所述第一晶体管的源极接地,以及在所述第一晶体管的漏极输出所述第一控制信号,
当所述第三控制信号为第一电平时,所述第一控制信号的电平与所述第一电源信号的电平相同;以及
当所述第三控制信号为第三电平时,所述第一控制信号的电平为第一电平。
可选地,所述第三控制子电路包括稳压二极管,所述稳压二极管的反向端连接到所述第三电源信号以及正向端连接到所述第一晶体管的栅极以输出所述第三控制信号,
在所述电子设备的开机期间并且当所述第三电源信号未达到预定值时,所述第三控制子电路输出第一电平的所述第三控制信号;以及
当所述电子设备的开机过程结束并且所述第三电源信号达到预定值时,所述第三控制子电路输出第三电平的所述第三控制信号。
可选地,所述第二控制子电路包括第二晶体管,所述第二晶体管的栅极接收所述第一控制子电路输出的所述第一控制信号,所述第二晶体管的漏极接收所述第二电源子电路输出的第二电源信号,所述第二晶体管的源极接地,以及在所述第二晶体管的漏极输出所述第二控制信号,
当所述第一控制信号为第一电平时,所述第二控制信号的电平与所述第二电源信号的电平相同;以及
当所述第一控制信号的电平与所述第一电源信号的电平相同时,所述第二控制信号的电平为第一电平。
可选地,所述控制电路还包括:
第四控制子电路,配置为从所述电子设备接收设置信号,并且根据设置信号控制所述第二控制信号的电平。
可选地,所述第四控制子电路包括第三晶体管,所述第三晶体管的栅极接收所述设置信号,所述第三晶体管的漏极接收所述第二控制子电路输出的第二控制信号,所述第三晶体管的源极接地,
当所述设置信号为低电平时,所述第二控制信号的电平与所述第二电源信号的电平相同;以及
当所述设置信号为高电平时,所述第二控制信号的电平为第一电平。
根据本发明另一实施例,提供了一种控制方法,应用于上面实施例中所述的控制电路,所述方法包括:
通过所述第一控制子电路从包括所述控制电路的电子设备中的电源子电路接收第一电源信号,并且输出第一控制信号;
通过所述第二控制子电路从所述电子设备的电源子电路接收第二电源信号,并且在所述第一控制信号的控制下,输出第二控制信号,
其中,所述第二控制信号用于控制所述电子设备中的第一功能子电路在所述电子设备的开机和关机期间被禁用。
可选地,所述方法还包括:
通过第三控制子电路从所述电子设备的电源子电路接收第三电源信号,并且输出第三控制信号,
其中,所述第一控制子电路在所述第三控制信号的控制下,输出所述第一控制信号,
当所述第三控制信号为第一电平时,所述第一控制信号的电平与所述第一电源信号的电平相同;以及
当所述第三控制信号为第三电平时,所述第一控制信号的电平为第一电平。
可选地,所述方法还包括:
通过第四控制子电路从所述电子设备接收设置信号,并且根据设置信号控制所述第二控制信号的电平,
其中,当所述设置信号为低电平时,所述第二控制信号的电平与所述第二电源信号的电平相同;以及
当所述设置信号为高电平时,所述第二控制信号的电平为第一电平。
根据本发明另一实施例,提供了一种电子设备,包括:
电源子电路,配置为提供第一电源信号、第二电源信号、第三电源信号;
第一功能子电路,配置为执行第一功能操作;以及
如上面实施例所述的控制电路。
因此,根据本申请实施例的控制电路、控制方法和显示装置,其能够完全避免开关机过程中出现噗噗声的问题,从而提高用户体验。
附图说明
图1是图示根据本发明第一实施例的控制电路的配置框图;
图2是图示根据本发明第一实施例的控制电路的电路图;
图3是图示根据本申请第一实施例的控制电路的工作时序图;
图4是图示根据本申请第二实施例的控制电路的配置框图;
图5是图示根据本申请第二实施例的控制电路的电路图;
图6是图示根据本申请第二实施例的逻辑图;
图7是图示根据本申请第三实施例的控制方法的流程图;
图8是图示根据本申请第四实施例的控制方法的流程图;以及
图9是图示根据本申请第五实施例的显示装置的配置框图。
具体实施方式
下面,将参考附图详细描述根据本申请实施例的控制电路、控制方法和显示装置。根据本发明实施例的控制电路可以应用于任何电子设备中,只要该电子设备包括功放子电路。这样的电子设备的例子可以包括显示器、电视机、智能手机、平板电脑等等。
<第一实施例>
下面,将参考图1和图2详细描述根据本发明第一实施例的控制电路。图1是图示根据本发明第一实施例的控制电路的配置框图。
如图1所示,根据本发明第一实施例的控制电路100包括第一控制子电路101、第二控制子电路102和第三控制子电路103。
第一控制子电路101从包括所述控制电路的电子设备中的电源子电路接收第一电源信号VDD1。该VDD1例如是电子设备的电源板中的5V电压,该5V电压例如可以给电路板中的各个电路元件供电。
第一控制子电路101输出第一控制信号Sctr1给第二控制子电路102,用于控制第二控制子电路102的信号输出。
第二控制子电路102从电子设备的电源子电路接收第二电源信号VDD2。该VDD2例如是电子设备的电源板中的3.3V电压,该3.3V电压例如可以给电子设备中的CPU、诸如Scalar IC的各种集成IC供电。
在所述第一控制信号的控制下,第二控制子电路102可以输出第二控制信号Sctr2。所述第二控制信号Sctr2用于控制所述电子设备中的第一功能子电路的工作状态,例如,所述第一功能子电路例如是电子设备中包括的功放子电路。需要注意的是,该第一功能子电路不限于功放子电路。例如,根据电子设备的类型的不同,该第一功能子电路也可以是诸如摄像头、闪光灯、天线元件等。
第三控制子电路103为从电子设备的电源子电路接收第三电源信号VDD3。该VDD3例如是电子设备的电源板中的12V电压,该12V电压例如也可以是电子设备中的背光驱动的电压。
第三控制子电路103输出第三控制信号到第一控制电路101。所述第一控制子电路101在所述第三控制信号的控制下,输出所述第一控制信号。
根据本实施例,在所述第一功能子电路例如是电子设备中包括的功放子电路的情况下,在所述电子设备的开机和关机期间,可以使得所述第二控制信号为第一电平,即,低电平。
因为第二控制信号连接到电子设备的功放子电路的控制管脚,所以当第二控制信号为低电平时,功放子电路被禁用。另一方面,当第二控制信号为高电平时,功放子电路被使能。
因此,在所述电子设备的开机和关机期间,通过控制所述第二控制信号为第一电平(即,低电平),可以使得功放子电路被禁用。在该情况下,在所述电子设备的开机和关机期间,电子设备不会产生噗噗声。
下面,将参考图2详细描述根据本发明第一实施例的控制电路的具体电路 结构。图2是图示根据本发明第一实施例的控制电路的电路图。
如图2所示,所述第一控制子电路101包括第一晶体管Q5、二极管D2、电容C3和电阻R2和R3。所述第一晶体管Q5的漏极连接电子设备的第一电源子电路VDD1以接收第一电源信号(例如,系统的5V电压)。所述第一晶体管Q5的栅极连接到第三控制子电路103以接收第三控制信号。所述第一晶体管Q5的源极接地。在所述第一晶体管Q5的漏极处输出第一控制信号Sctr1。
第三控制子电路103包括稳压二极管ZD1、电阻R1。所述稳压二极管ZD1的反向端连接到电子设备的第三电源信号VDD3(例如,系统的12V电压)。所述稳压二极管ZD1的正向端连接到所述第一晶体管Q5的栅极以输出所述第三控制信号Sctr3。
稳压二极管ZD1例如用于提供等于第三电源信号的稳压信号,即,12V。也就是说,当第三电源信号未达到12V时,稳压二极管ZD1不导通。此时,施加到第一晶体管Q5的栅极的第三控制信号Sctr3为低电平,即,0V。另一方面,当第三电源信号达到12V时,稳压二极管ZD1被击穿,从而导通。此时,施加到第一晶体管Q5的栅极的第三控制信号Sctr3为高电平。
第二控制子电路102包括第二晶体管Q7、电阻R4和R5。所述第二晶体管Q7的栅极接收所述第一控制子电路101输出的所述第一控制信号Sctr1。所述第二晶体管Q7的漏极接收电子设备的第二电源子电路VDD2输出的第二电源信号(例如,系统的3.3V电压)。所述第二晶体管Q7的源极接地。在所述第二晶体管Q7的漏极输出所述第二控制信号Sctr2。
当所述第三控制信号Sctr3为低电平时,所述第一晶体管Q5截止。此时,所述第一控制信号Sctr1的电平与所述第一电源信号VDD1的电平相同。
另一方面,当所述第三控制信号Sctr3为高电平时,所述第一晶体管Q5导通。此时,所述第一控制信号Sctr1的电平为低电平。
此外,当所述第一控制信号Sctr1为低电平时,第二晶体管Q7截止。此时,所述第二控制信号Sctr2的电平与所述第二电源信号的电平相同。
另一方面,当所述第一控制信号Sctr1的电平与所述第一电源信号的电平相同时,当第一电源信号的电压大于所述第二晶体管Q7的导通电压时,第二晶体管Q7导通,此时,第二控制信号Sctr2的电平为低电平。
下面,将参考图3详细描述根据本发明实施例的控制电路的操作。图3是图示根据本申请第一实施例的控制电路的工作时序图。
在开机时,电子设备的电源子电路开始工作,此时,第一电源信号VDD1从0V开始逐渐增加到5V,并且第三电源信号VDD3从0V开始逐渐增加到12V。需要注意的是,在本实施例中,第二电源信号VDD2是从第一电源信号VDD1转换获得,因此,如图3所示,在第一电源信号VDD1到达5V时,第二电源信号VDD2才开始从0V开始逐渐增加到3.3V。
此外,如图3所示,当第三控制信号Sctr3为低电平时,第一控制信号Sctr1的电平与第一电源信号VDD1的电平相同,并且从0V逐渐增加到5V,并且保持为5V。此时,因为第一控制信号Sctr1为高电平,所以第二晶体管Q7导通,所以第二控制信号Sctr2保持为低电平。
然后,随着第三电源信号VDD3从0V开始逐渐增加到12V,即,开机完成时,稳压二极管ZD1被击穿,所以第三控制信号Sctr3从低电平变为高电平。在该定时,第一晶体管Q5导通,因此第一控制信号Sctr1从高电平变为低电平。同时,因为第一控制信号Sctr1从高电平变为低电平,所以第二晶体管Q7截止。此时,第二控制信号Sctr2变为高电平,即,第二电源信号VDD2的电压值(例如,3.3V)。
需要注意的是,在本申请的实施例中设置第二电源信号VDD2由第一电源信号VDD1转换获得的作用是使得第二电源信号VDD2比第一电源信号VDD1延迟。从而避免当第一电源信号VDD1的电压较低时,因为第二晶体管Q7截止,所以第二控制信号Sctr2输出错误的控制信号。
因此,从图3可见,在电子设备开机的T1时段期间,因为用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
此外,如图3所示,在T2工作时段期间,因为第二控制信号Sctr2的电平保持为高电平,所以诸如功放子电路的第一功能子电路被启用,此时,功放子电路正常工作。
最后,在关机时,电子设备的电源子电路停止工作,此时,第一电源信 号VDD1从5V开始逐渐降低到0V,第二电源信号VDD2从3.3V开始逐渐降低到0V,并且第三电源信号VDD3从12V开始逐渐降低到0V。
因为稳压二极管ZD1的稳压电压为12V,所以在第三电源信号VDD3从12V降低的定时,稳压二极管ZD1截止。此时,第三控制信号Sctr3从高电平变为低电平。
同时,因为第三控制信号Sctr3从高电平变为低电平,所以第一晶体管Q5截止。此时,第一控制信号Sctr1变为与第一电源信号VDD1相同的电平,并且从高电平5V逐渐降低到0V。
同时,因为第一控制信号Sctr1变为高电平,所以第二晶体管Q7导通。因此,第二控制信号Sctr2变为低电平,并且保持到关机时段T3结束。
因此,从图3可见,在电子设备关机的T3时段期间,因为用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
因此,根据本申请第一实施例的控制电路,能够完全避免开关机过程中出现噗噗声的问题,从而提高用户体验。
<第二实施例>
下面,将参考图4和图5详细描述根据本发明第二实施例的控制电路。图4是图示根据本发明第二实施例的控制电路的配置框图。
如图4所示,根据本发明第二实施例的控制电路400包括第一控制子电路401、第二控制子电路402、第三控制子电路403和第四控制子电路404。
与根据第一实施例的控制电路100相比,根据第二实施例的控制电路100多了第四控制子电路404。
第一控制子电路401、第二控制子电路402和第三控制子电路403与根据第一实施例的控制电路中的第一控制子电路401、第二控制子电路402、第三控制子电路403结构和连接方式基本相同,在此省略其详细描述。
第四控制子电路404可以从电子设备接收设置信号,并且根据设置信号控制所述第二控制信号的电平。
具体地,如图5所示,第四控制子电路404包括第三晶体管Q8,所述第三晶体管Q8的栅极接收设置信号Sset,所述第三晶体管Q8的漏极接收所述第二控制子电路402输出的第二控制信号,所述第三晶体管Q8的源极接地。
例如,当电子设备的OSD菜单的静音功能设置为打开时,该设置信号Sset为高电平,当静音功能设置为关闭时,该设置信号Sset为低电平。
如图5所示,当所述设置信号Sset为低电平时,第三晶体管Q8截止,此时所述第二控制信号Sctr2的电平与所述第二电源信号VDD2的电平相同。另一方面,当所述设置信号Vset为高电平时,第三晶体管Q8导通,所述第二控制信号Sctr2的电平为低电平。
图6是图示根据本申请第二实施例的控制电路的逻辑真值图。
如图6所示,当第二控制信号Sctr2和设置信号Sset都为低电平时,功能子电路使能。
当第二控制信号Sctr2为低电平和设置信号Sset为高电平时,功能子电路被禁用。
当第二控制信号Sctr2为高电平时,不管设置信号Sset为高电平或低电平时,功能子电路都被禁用。
因此,在电子设备开关机期间,如果通过在电子设备的OSD菜单中设置静音功能,则因为用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
另一方面,在电子设备正常操作期间,也可以通过在电子设备的OSD菜单中设置静音功能,使得用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,从而使得诸如功放子电路的第一功能子电路被禁用。
因此,根据本申请第二实施例的控制电路,通过另外的第四控制子电路,能够更加灵活地控制诸如功放子电路的功能子电路,完全避免开关机过程中出现噗噗声的问题,从而提高用户体验。
<第三实施例>
下面,将参考图7描述根据本发明第三实施例的控制方法。根据本发明第三实施例的控制方法应用于上面实施例中所述的控制电路中。
图7是图示根据本申请第三实施例的控制方法的流程图。如图7所示,根据本发明第三实施例的控制方法700包括:
步骤S701:通过第一控制子电路从包括控制电路的电子设备中的电源子电路接收第一电源信号,并且输出第一控制信号;
步骤S702:通过所述第二控制子电路从所述电子设备的电源子电路接收第二电源信号,并且在所述第一控制信号的控制下,输出第二控制信号,
其中,所述第二控制信号用于控制所述电子设备中的第一功能子电路的工作状态,并且在所述电子设备的开机和关机期间,所述第二控制信号为第一电平(例如,低电平)。
所述方法700还包括:
通过第三控制子电路从所述电子设备的电源子电路接收第三电源信号,并且输出第三控制信号,其中,所述第一控制子电路在所述第三控制信号的控制下,输出所述第一控制信号,当所述第三控制信号为第一电平时,所述第一控制信号的电平与所述第一电源信号的电平相同;以及当所述第三控制信号为第三电平时,所述第一控制信号的电平为第一电平。
如上面参考第一实施例的控制电路描述的,在电子设备开机的T1时段期间,因为用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
此外,在电子设备关机的T3时段期间,因为用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
因此,根据本申请第三实施例的控制方法,能够完全避免开关机过程中出现噗噗声的问题,从而提高用户体验。
<第四实施例>
图8是图示根据本申请第四实施例的控制方法的流程图。如图8所示,根 据本发明第三实施例的控制方法800包括:
步骤S801:通过第一控制子电路从包括控制电路的电子设备中的电源子电路接收第一电源信号,并且输出第一控制信号;
步骤S802:通过所述第二控制子电路从所述电子设备的电源子电路接收第二电源信号,并且在所述第一控制信号的控制下,输出第二控制信号,其中,所述第二控制信号用于控制所述电子设备中的第一功能子电路的工作状态,并且在所述电子设备的开机和关机期间,所述第二控制信号为第一电平;
步骤S803:通过第四控制子电路从所述电子设备接收设置信号,并且根据设置信号控制所述第二控制信号的电平,其中,当所述设置信号为低电平时,所述第二控制信号的电平与所述第二电源信号的电平相同;以及当所述设置信号为高电平时,所述第二控制信号的电平为第一电平。
与根据第三实施例的控制方法相比,根据第四实施例的控制方法多了接收设置信号的步骤。
因此,在电子设备开关机期间,如果通过在电子设备的OSD菜单中设置静音功能,则因为用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
另一方面,在电子设备正常操作期间,也可以通过在电子设备的OSD菜单中设置静音功能,使得用于控制诸如功放子电路的功能子电路的第二控制信号Sctr2的电平保持为低电平,从而使得诸如功放子电路的第一功能子电路被禁用。
因此,根据本申请第四实施例的控制方法,通过第四控制子电路接收设置信号,能够更加灵活地控制诸如功放子电路的功能子电路,完全避免开关机过程中出现噗噗声的问题,从而提高用户体验。
<第五实施例>
图9是图示根据本发明第五实施例的电子设备的配置框图。该电子设备可以是任何电子设备中,只要该电子设备包括诸如功放子电路的功能子电路。这样的电子设备的例子可以包括显示器、电视机、智能手机、平板电脑等等。
如图9所示,该电子设备900包括:
电源子电路901,配置为提供第一电源信号、第二电源信号、第三电源信号;
第一功能子电路902,配置为执行第一功能操作;以及
控制电路903。
该控制电路可以是上面第一实施例中的控制电路100或者是上面第二实施例中的控制电路400。在此省略其详细描述。
通过在电子设备900中设置这样的控制电路903,在电子设备开机的T1时段期间,因为用于控制诸如功放子电路的第一功能子电路902的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路902被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
此外,在电子设备关机的T3时段期间,因为用于控制诸如功放子电路的第一功能子电路902的第二控制信号Sctr2的电平保持为低电平,所以诸如功放子电路的第一功能子电路902被禁用,从而能够完全避免开机过程中出现噗噗声的问题。
因此,根据本申请第五实施例的电子设备,能够完全避免开关机过程中出现噗噗声的问题,从而提高用户体验。
需要注意的是,上面的实施例仅仅是用作示例,本申请不限于这样的示例,而是可以进行各种变化。
需要说明的是,在本说明书中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
最后,还需要说明的是,上述一系列处理不仅包括以这里所述的顺序按时间序列执行的处理,而且包括并行或分别地、而不是按时间顺序执行的处理。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到本申请可借助软件加必需的硬件平台的方式来实现,当然也可以全部通过硬件来实施。基于这样的理解,本申请的技术方案对背景技术做出贡献的全部或者部分可以以软件产品的形式体现出来,该计算机软件产品可以存储在存储介质中,如ROM(只读存储器)/RAM(随机存取存储器)、磁碟、光盘等,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例或者实施例的某些部分所述的液晶显示面板。
以上对本申请进行了详细介绍,本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的方法及其核心思想;同时,对于本领域的一般技术人员,依据本申请的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本申请的限制。
本公开要求于2016年9月12日递交的中国专利申请第201610816674.8号的优先权,在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (13)

  1. 一种电子设备的控制电路,包括:
    第一控制子电路,配置为从所述电子设备中的电源子电路接收第一电源信号,并且输出第一控制信号;
    第二控制子电路,配置为从所述电子设备的电源子电路接收第二电源信号,并且在所述第一控制信号的控制下,输出第二控制信号,
    其中,所述第二控制信号用于控制所述电子设备中的功能子电路在所述电子设备的开机和关机期间被禁用。
  2. 如权利要求1所述的电子设备的控制电路,其中,所述功能子电路是功放子电路。
  3. 如权利要求1所述的控制电路,其中,所述第二电源信号与所述第一电源信号不同,并且所述第二电源信号由通过转换第一电源信号获得。
  4. 如权利要求1所述的控制电路,还包括:
    第三控制子电路,配置为从所述电子设备的电源子电路接收第三电源信号,并且输出第三控制信号,
    其中,所述第一控制子电路在所述第三控制信号的控制下,输出所述第一控制信号。
  5. 如权利要求4所述的控制电路,其中,所述第一控制子电路包括第一晶体管,所述第一晶体管的漏极连接所述第一电源子电路以接收所述第一电源信号,所述第一晶体管的栅极连接到所述第三控制子电路以接收所述第三控制信号,所述第一晶体管的源极接地,以及在所述第一晶体管的漏极输出所述第一控制信号。
  6. 如权利要求5所述的控制电路,其中,所述第三控制子电路包括稳压二极管,所述稳压二极管的反向端连接到所述第三电源信号以及正向端连接到所述第一晶体管的栅极以输出所述第三控制信号。
  7. 如权利要求6所述的控制电路,其中,所述第二控制子电路包括第二晶体管,所述第二晶体管的栅极接收所述第一控制子电路输出的所述第一控制信号,所述第二晶体管的漏极接收所述第二电源子电路输出的第二电源信 号,所述第二晶体管的源极接地,以及在所述第二晶体管的漏极输出所述第二控制信号。
  8. 如权利要求7所述的控制电路,还包括:
    第四控制子电路,配置为从所述电子设备接收设置信号,并且根据设置信号控制所述第二控制信号的电平。
  9. 如权利要求8所述的控制电路,其中,所述第四控制子电路包括第三晶体管,所述第三晶体管的栅极接收所述设置信号,所述第三晶体管的漏极接收所述第二控制子电路输出的第二控制信号,所述第三晶体管的源极接地。
  10. 一种控制方法,应用于如权利要求1-9的任一所述的控制电路,所述方法包括:
    通过第一控制子电路从包括所述控制电路的电子设备中的电源子电路接收第一电源信号,并且输出第一控制信号;
    通过第二控制子电路从所述电子设备的电源子电路接收第二电源信号,并且在所述第一控制信号的控制下,输出第二控制信号,
    其中,所述第二控制信号用于控制所述电子设备中的功能子电路在所述电子设备的开机和关机期间被禁用。
  11. 如权利要求10所述的方法,还包括:
    通过第三控制子电路从所述电子设备的电源子电路接收第三电源信号,并且输出第三控制信号,
    其中,所述第一控制子电路在所述第三控制信号的控制下,输出所述第一控制信号,
    当所述第三控制信号为第一电平时,所述第一控制信号的电平与所述第一电源信号的电平相同;以及
    当所述第三控制信号为第三电平时,所述第一控制信号的电平为第一电平。
  12. 如权利要求11所述的方法,还包括:
    通过第四控制子电路从所述电子设备接收设置信号,并且根据设置信号控制所述第二控制信号的电平,
    其中,当所述设置信号为低电平时,所述第二控制信号的电平与所述第 二电源信号的电平相同;以及
    当所述设置信号为高电平时,所述第二控制信号的电平为第一电平。
  13. 一种电子设备,包括:
    电源子电路,配置为提供第一电源信号、第二电源信号、第三电源信号;
    功能子电路,配置为执行第一功能操作;以及
    如权利要求1-9的任一所述的控制电路。
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US20180302043A1 (en) 2018-10-18
CN107817699B (zh) 2023-11-17

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