Power receiving device and control method thereof

Abstract

A power receiving device and a control method thereof are disclosed. The control method of the power receiving device includes communicating with a power adapter via a configuration channel pin of a connector to obtain a power supply quota of the power adapter and generating a power consumption threshold based on the obtained power supply quota; when a total consumed power of a system circuit is greater than the power consumption threshold, selecting a corresponding situation mode from a plurality of situation modes according to a situation setting signal generated by a setting circuit; selecting a corresponding exclusion parameter from a plurality of exclusion parameters according to the corresponding situation mode; excluding a corresponding power reduction program from a plurality of power reduction programs to generate a selected group of power reduction programs according to the corresponding exclusion parameter; and executing at least one power reduction program in the selected group of power reduction programs to reduce the total consumed power. Accordingly, the power receiving device can still continuously draw power from the power adapter and operate normally when the power adapter externally connected thereto does not conform to its matching specifications.

Description

Technical Field

[0001] This invention relates to the field of power control technology, and in particular to a power receiving device and its control method. Background Technology

[0002] Generally, electronic devices are equipped with an adapter for power supply and charging. However, if the adapter connected to the electronic device does not meet the specifications of the device, the power supplied by the adapter may not be able to meet the minimum power consumption required for the electronic device to operate, causing the adapter to cut off power due to overload protection, thus preventing the electronic device from operating normally. Summary of the Invention

[0003] The present invention provides a power receiving device and a control method thereof, so that the power receiving device can continue to draw power and operate normally from the power adapter when the power receiving device is connected to an external power adapter that does not meet its compatibility specifications.

[0004] According to one aspect of the present invention, a power receiving device is provided, comprising:

[0005] System circuitry;

[0006] The circuit is configured to generate different context setting signals in response to different inputs;

[0007] A connector suitable for connecting an external power adapter, the connector including power pins and configuration channel pins;

[0008] A power management circuit, connected to the connector and the system circuit, is used to draw power from the power pins when the power adapter is connected to the connector, provide system power to the system circuit based on the power supply, and detect the total power consumption of the system circuit; and

[0009] A control circuit, connected to the system circuit, the setting circuit, the connector, and the power management circuit, stores a plurality of scenario modes, a plurality of exclusion parameters, and a plurality of power reduction programs, wherein the plurality of scenario modes correspond to different scenario setting signals and the plurality of exclusion parameters, the plurality of exclusion parameters correspond to the plurality of power reduction programs, and each power reduction program is used to change different operating parameters of one of the system circuit and the control circuit;

[0010] The control circuit is used to communicate with the power adapter via the configuration channel pins to obtain the power supply quota of the power adapter; and

[0011] The control circuit is further configured to, when the total power consumption is greater than a power consumption threshold, select a corresponding scenario mode from the plurality of scenario modes according to the scenario setting signal generated by the setting circuit, select a corresponding exclusion parameter from the plurality of exclusion parameters according to the corresponding scenario mode, exclude a corresponding power reduction procedure from the plurality of power reduction procedures according to the corresponding exclusion parameter to generate a power reduction selection group, and execute at least one of the power reduction procedures in the power reduction selection group to reduce the total power consumption, wherein the power consumption threshold is generated based on the obtained power supply quota.

[0012] Optionally, the system circuit includes a battery circuit, and the first power reduction procedure in the plurality of power reduction procedures is used to reduce the charging current of the battery circuit as an operating parameter.

[0013] Optionally, the system circuit includes a display circuit and a driving circuit. The driving circuit generates a pulse width modulation signal to control the brightness of the display circuit. The second power reduction procedure in the plurality of power reduction procedures is used to change the duty cycle of the pulse width modulation signal, which is the operating parameter of the driving circuit, or to change the maximum brightness value of the display circuit to reduce the brightness.

[0014] Optionally, the third power reduction procedure in the plurality of power reduction procedures is used to reduce the operating frequency of the control circuit as an operating parameter.

[0015] Optionally, the system circuit includes a wireless communication circuit, and the fourth power reduction procedure in the plurality of power reduction procedures is used to reduce the radio frequency power of the wireless communication circuit as an operating parameter.

[0016] Optionally, the system circuit includes an audio circuit, and the fifth power reduction procedure in the plurality of power reduction procedures is used to reduce the audio power of the audio circuit as an operating parameter.

[0017] Optionally, the sixth power reduction procedure in the plurality of power reduction procedures is used to reduce the polling frequency of the control circuit as an operating parameter.

[0018] Optionally, the setting circuit is a user interface.

[0019] Optionally, the user interface is a keyboard with a plurality of keys or a touch display panel that displays a plurality of option graphics.

[0020] According to another aspect of the present invention, a method for controlling a powered device is provided, comprising:

[0021] The power adapter is communicated via the configuration channel pins of the connector to obtain the power supply quota of the power adapter, and a power consumption threshold is generated based on the obtained power supply quota.

[0022] When the power adapter is connected to the connector, a power supply is drawn through the power pin of the connector, and a system power supply is provided to the system circuit according to the power supply.

[0023] Detect the total power consumption of the system circuit;

[0024] When the total power consumption is greater than the power consumption threshold, a corresponding scenario mode is selected from a plurality of scenario modes according to the scenario setting signal generated by the setting circuit. The plurality of scenario modes correspond to a plurality of exclusion parameters and correspond to different plurality of scenario setting signals, and the scenario setting signal generated by the setting circuit is one of the plurality of scenario setting signals.

[0025] Based on the corresponding scenario pattern, select the corresponding exclusion parameter from the plurality of exclusion parameters;

[0026] Based on the corresponding exclusion parameters, a power reduction procedure is excluded from a plurality of power reduction procedures to generate a power reduction selection group, wherein the plurality of exclusion parameters respectively correspond to the plurality of power reduction procedures, and each power reduction procedure is used to change different operating parameters of one of the system circuits and the control circuits; and

[0027] Execute at least one of the power reduction procedures from the selected power reduction group to reduce the total power consumption;

[0028] The plurality of scenario modes correspond to a plurality of exclusion parameters and to different plurality of scenario setting signals. The scenario setting signal generated by the setting circuit is one of these scenario setting signals. The plurality of exclusion parameters correspond to a plurality of power reduction procedures, and each power reduction procedure is used to change the operating parameters of one of the system circuits and the control circuit.

[0029] The technical solution provided by this invention allows the powered device to determine whether the power supply quota of the power adapter meets the total power consumption of the system circuit by implementing its control method, and to reduce the total power consumption when the power supply quota does not meet the total power consumption. This enables the powered device to continue to draw power and operate normally from the power adapter even when connected to an external power adapter that does not meet its specifications. In some embodiments, the powered device can eliminate unsuitable power reduction procedures in the current situation by implementing its control method, so that the powered device can quickly draw power from a power adapter that does not meet its specifications.

[0030] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of a power receiving device provided in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the connector joint in an exemplary embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of a bidirectional switching circuit in a power management circuit of an exemplary embodiment of the present invention;

[0035] Figures 4A-4D This is a schematic diagram of a portion of the circuitry of the microcontroller in an exemplary embodiment of the present invention.

[0036] Figure 5 A flowchart illustrating a control method for a power receiving device provided in an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of a portion of the power communication circuit of the control circuit in an exemplary embodiment of the present invention.

[0038] Figure 7 This is a schematic diagram of a portion of the configuration channel communication circuit of the connector in an exemplary embodiment of the present invention;

[0039] Figure 8 A schematic diagram of another power receiving device provided in an embodiment of the present invention;

[0040] Figures 9A-9B This is a schematic diagram of a portion of the charging and discharging circuit of the battery circuit in an exemplary embodiment of the present invention.

[0041] Figure 10 A schematic diagram of another power receiving device provided in an embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of a portion of the display controller circuit in an exemplary embodiment of the present invention;

[0043] Figures 12A-12BThis is a schematic diagram of a portion of the driving circuit in an exemplary embodiment of the present invention;

[0044] Figure 13 This is a schematic diagram of a portion of the notification circuit of the control circuit in an exemplary embodiment of the present invention;

[0045] Figure 14 A schematic diagram of another power receiving device provided in an embodiment of the present invention;

[0046] Figure 15 This is a schematic diagram of a portion of the communication control sub-circuit of the control circuit in an exemplary embodiment of the present invention.

[0047] Figure 16 This is a schematic diagram of a portion of the wireless communication circuit in an exemplary embodiment of the present invention;

[0048] Figure 17 A schematic diagram of another power receiving device provided in an embodiment of the present invention;

[0049] Figure 18 This is a schematic diagram of a portion of the audio control sub-circuit of the control circuit in an exemplary embodiment of the present invention;

[0050] Figure 19 This is a schematic diagram of a portion of the audio circuit in an exemplary embodiment of the present invention.

[0051] Symbol Explanation

[0052] 10: Power receiving device

[0053] 11: System Circuit

[0054] 111: Battery Circuit

[0055] 1110: Charging and discharging circuit

[0056] IC4: Power Integrated Circuit

[0057] 1112:Contact

[0058] 1113:Contact

[0059] 1114:Contact

[0060] 1115:Contact

[0061] 1116:Contact

[0062] 112: Drive circuit

[0063] IC6: First Driver Integrated Circuit

[0064] IC7: Second Driver Integrated Circuit

[0065] 1121:Contact

[0066] 1122:Contact

[0067] 1123:Contact

[0068] 1124:Contact

[0069] 1125:Contact

[0070] 1126:Contact

[0071] 113: Display circuit

[0072] 114: Wireless communication circuit

[0073] IC10: Communication Integrated Circuit

[0074] 1141:Contact

[0075] 1142:Contact

[0076] 1143:Contact

[0077] 1144:Contact

[0078] 115: Audio Circuit

[0079] IC12: Audio Integrated Circuit

[0080] CDC_PDM_CLK: Connection end

[0081] CDC_PDM_SYNC: Connection end

[0082] CDC_PDM_TX: Connection end

[0083] CDC_PDM_RX0: Connection end

[0084] CDC_PDM_RX1: Connection end

[0085] CDC_PDM_RX2: Connector

[0086] CDC_PDM_RX0_DRE: Connection end

[0087] CDC_PDM_RX1_DRE: Connector

[0088] 12: Setting Circuit

[0089] 13: Connector

[0090] 130: Connector

[0091] VBUS_0: First end

[0092] VBUS_1: Second end

[0093] VBUS_2: Third end

[0094] VBUS_3: Fourth Terminal

[0095] CC1_1: Fifth End

[0096] CC2_1: Sixth End

[0097] SSTXp1: Seventh End

[0098] SSTXn1: Eighth terminal

[0099] SSTXp2: Ninth Terminal

[0100] SSTXn2: Tenth end

[0101] SSRXp1: Eleventh terminal

[0102] SSRXn1: Twelfth end

[0103] SSRXp2: Thirteenth terminal

[0104] SSRXn2: Fourteenth terminal

[0105] Dp1: Fifteenth end

[0106] Dn1: Sixteenth end

[0107] Dp2: Seventeenth end

[0108] Dn2: The Eighteenth End

[0109] SBU1: The Nineteenth Terminal

[0110] SBU2: The twentieth end

[0111] GND_0: Twenty-first end

[0112] GND_1: Twenty-second end

[0113] GND_2: Twenty-third end

[0114] GND_3: Twenty-fourth end

[0115] GND_4: Twenty-fifth end

[0116] GND_5: Twenty-sixth end

[0117] GND_6: Twenty-seventh end

[0118] GND_7: Twenty-eighth end

[0119] 131: Power pin

[0120] 132: Configure channel pins

[0121] 133: Configure channel communication circuit

[0122] IC3: Control Integrated Circuit

[0123] 1331:Contact

[0124] 1332:Contact

[0125] CC1_2: Connector

[0126] CC2_2: Connector

[0127] 14: Power Management Circuit

[0128] 141: Bidirectional switching circuit

[0129] 1411:Contact

[0130] 1412:Contact

[0131] 1413:Contact

[0132] 1414: First Switch

[0133] 1415: Second Switch

[0134] 15: Control Circuit

[0135] 151: Microcontroller

[0136] IC1: Control Integrated Circuit

[0137] 1511:Contact

[0138] 1512:Contact

[0139] 1513:Contact

[0140] 1514:Contact

[0141] 1515:Contact

[0142] 1516: Linear regulator

[0143] 1517: Two-way translator

[0144] 1518:Contact

[0145] 1519:Contact

[0146] USB1SCL: Connector end

[0147] USB1SDA: Connector

[0148] 152: Power Communication Circuit

[0149] IC2: Power Integrated Circuit

[0150] CC1_3: Connector

[0151] CC2_3: Connector

[0152] 153: Display Controller

[0153] IC5: Control Integrated Circuit

[0154] 1531:Contact

[0155] 154: Notification Circuit

[0156] IC8: Control Integrated Circuit

[0157] 1541:Contact

[0158] 1542:Contact

[0159] 155: Communication Control Sub-circuit

[0160] IC9: Control Integrated Circuit

[0161] 1551:Contact

[0162] 1552:Contact

[0163] 1553:Contact

[0164] 1554:Contact

[0165] 156: Audio Control Sub-circuit

[0166] IC11: Control Integrated Circuit

[0167] LPI_GPIO_18: Connection terminal

[0168] LPI_GPIO_19: Connection end

[0169] LPI_GPIO_20: Connection terminal

[0170] LPI_GPIO_21: Connection terminal

[0171] LPI_GPIO_22: Connection terminal

[0172] LPI_GPIO_23: Connection terminal

[0173] LPI_GPIO_24: Connection end

[0174] LPI_GPIO_25: Connection terminal

[0175] 20: Power Adapter

[0176] VBus_S: Power Supply

[0177] SYV: System power supply

[0178] EN1: Enable signal

[0179] A_BATT: Battery voltage

[0180] B_BATT: Battery voltage

[0181] CHG_I2C_SCL: Clock signal

[0182] CHG_I2C_SDA: Current reduction signal

[0183] BLSP_I2C_SCL: Clock signal

[0184] BLSP_I2C_SDA: Operating frequency adjustment signal

[0185] CHG_IN: Charging voltage

[0186] PWM_C: Duty Cycle Change Signal

[0187] V_VSYS: Operating voltage

[0188] LED_OUT1: First display voltage

[0189] LED_OUT2: Second display voltage

[0190] CH0_CLK: Clock signal

[0191] CH0_DATA: First communication data signal

[0192] CH1_CLK: Clock signal

[0193] CH1_DATA: Second communication data signal

[0194] DVCC1: Connector

[0195] DVCC2: Connector

[0196] C_CC1: Connection end

[0197] C_CC2: Connection end

[0198] S200~S208: Steps Detailed Implementation

[0199] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0200] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0201] Figure 1 This is a schematic diagram of a power receiving device provided in an embodiment of the present invention, with reference to... Figure 1 The powered device 10 includes a system circuit 11, a setting circuit 12, a connector 13, a power management circuit 14, and a control circuit 15. The power management circuit 14 is connected to the connector 13 and the system circuit 11. The control circuit 15 is connected to the system circuit 11, the setting circuit 12, the connector 13, and the power management circuit 14. In some embodiments, the powered device 10 may be a charged electronic device such as a laptop, desktop computer, or mobile digital device.

[0202] The system circuit 11 is used to handle the operation of various system functions of the powered device 10. For example, the system circuit 11 can handle the operation of the power storage function, display function, communication function and audio function of the powered device 10.

[0203] Setting circuit 12 generates different context setting signals in response to different inputs. In some embodiments, setting circuit 12 is a user interface. In one example, the user interface can be a keyboard with multiple keys. Different key combinations are different inputs, and each key combination consists of multiple keys. When different key combinations are pressed by the user, setting circuit 12 generates different context setting signals. For example, suppose the first key combination consists of the "Alt" key and the "A" key, and the second key combination consists of the "Alt" key and the "B" key. When the first key combination ("Alt" + "A") is pressed, setting circuit 12 generates a first context setting signal; when the second key combination ("Alt" + "B") is pressed, setting circuit 12 generates a second context setting signal different from the first context setting signal. In one example, the user interface can be a touch display panel that displays multiple option graphics. Each option graphic is a different input. When the user selects different option graphics, setting circuit 12 generates different context setting signals.

[0204] Connector 13 is adapted to connect an external power adapter 20. In some embodiments, the power adapter 20 may be an AC-to-DC power adapter. Figure 2 This is a schematic diagram of the connector's joint in an exemplary embodiment of the present invention. In some embodiments, such as... Figure 2 As shown, connector 13 has a connector 130, and power adapter 20 has a connection port (not shown). When connector 130 mates with the connection port, connector 13 draws power VBus_S (e.g., DC power) from power adapter 20. In other words, connector 130 is matched to the connection port; for example, if the connection port is a USB male, then connector 130 is a USB female, and both the USB male and USB female connectors have the same USB version.

[0205] Here, connector 13 includes a power pin 131 and a configuration channel (CC) pin 132. The power pin 131 is used to receive power VBus_S supplied from the power adapter 20. In some embodiments, the power pin 131 and configuration channel pin 132 can be implemented by connector 130. For example, as... Figure 2 As shown, power pin 131 can be implemented by at least one of the first terminal VBUS_0, the second terminal VBUS_1, the third terminal VBUS_2, and the fourth terminal VBUS_3 of connector 130. Thus, when connector 130 is mated with the connector port, connector 13 can draw power VBus_S from power adapter 20 via power pin 131. Configuration channel pin 132 can be implemented by one of the fifth terminal CC1_1 and the sixth terminal CC2_1 of connector 130.

[0206] In some embodiments, in addition to the power pin 131 and the configuration channel pin 132, the connector 130 may also implement other types of pins depending on the definition of its USB version (i.e., the USB version of the connector 13). For example, such as Figure 2 As shown, when connector 13 is a Type-C USB connector, the seventh terminal SSTXp1 and the eighth terminal SSTXn1 (or the ninth terminal SSTXp2 and the tenth terminal SSTXn2) of connector 130 can realize the high-speed transmission pins of connector 13. The eleventh terminal SSRXp1 and the twelfth terminal SSRXn1 (or the thirteenth terminal SSRXp2 and the fourteenth terminal SSRXn2) of connector 130 can realize the high-speed reception pins of connector 13. The fifteenth terminal Dp1 and the sixteenth terminal Dn1 (or the seventeenth terminal Dp2 and the eighteenth terminal Dn2) of connector 130 can realize the positive data pin and the negative data pin of connector 13, respectively. The nineteenth terminal SBU1 (or the twentieth terminal SBU2) of connector 130 can realize the auxiliary pins of connector 13, which are used to transmit auxiliary signals. One of the fifth terminal CC1_1 and the sixth terminal CC2_1 of connector 130 can be configured as the channel pin 132, and the other can be configured as the cable power supply pin (Vconn) of connector 13. At least one of the twenty-first terminal GND_0, twenty-second terminal GND_1, twenty-third terminal GND_2, twenty-fourth terminal GND_3, twenty-fifth terminal GND_4, twenty-sixth terminal GND_5, twenty-seventh terminal GND_6, and twenty-eighth terminal GND_7 of connector 130 can be configured as the grounding pin of connector 13, and it is connected to the reference ground.

[0207] Here, the positive data pin, negative data pin, high-speed receive pin, and high-speed transmit pin can be connected to the control circuit 15 and the system circuit 11 so that the control circuit 15 and the system circuit 11 can obtain and process the data signals of the main device connected to the power adapter 20. The main device includes, but is not limited to, USB communication and CDC control devices (such as network cards, modems, serial ports), human interface devices (such as keyboards and mice), physical interface devices (such as joysticks), still image capture devices (such as image scanners), printers, mass storage devices (such as USB flash drives, external hard drives, memory cards, digital cameras), USB hubs, CDC-Date devices (such as modems and fax machines), smart card devices (such as card readers), video devices (such as webcams), audio / video (AV) interfaces (such as televisions), or wireless controllers (such as Bluetooth).

[0208] Continue to refer to Figure 1 When the power adapter 20 is connected to connector 13, the power management circuit 14 can draw power VBus_S from the power pin 131 and provide a system power SYV to the system circuit 11 based on the power VBus_S. For example, the power management circuit 14 can regulate, boost, and / or buck the power VBus_S to generate the system power SYV. Here, the power management circuit 14 can also detect the total power consumption of the system circuit 11 when powered by the system power SYV. In some embodiments, the power management circuit 14 can also provide the system power SYV (or another power source with a different voltage level) to the control circuit 15 and the setting circuit 12. In other embodiments, the control circuit 15 and the setting circuit 12 can also have built-in power supplies to power themselves. In some embodiments, the power management circuit 14 can be implemented by a gauge integrated circuit and a voltage regulation circuit.

[0209] Figure 3 This is a schematic diagram of a bidirectional switching circuit in a power management circuit of an exemplary embodiment of the present invention. Figures 4A-4D This is a schematic diagram of a portion of the microcontroller circuitry in an exemplary embodiment of the present invention. In some embodiments, such as... Figures 3 to 4DAs shown, the power management circuit 14 includes a bidirectional switching circuit 141. The contact 1411 of the first switch 1414 of the bidirectional switching circuit 141 is connected to the power pin 131 of the connector 13 and receives the power supply VBus_S from the power pin 131. The contact 1412 of the second switch 1415 of the bidirectional switching circuit 141 is connected to the system circuit 11. The first switch 1414 and the second switch 1415 can be implemented using transistors. The control circuit 15 includes a microcontroller 151. The microcontroller 151 can be implemented using a control integrated circuit IC1 and its matching circuit. The microcontroller 151 performs the main computational functions of the control circuit 15. The contact 1511 of the microcontroller 151 is connected to the contact 1413 of the bidirectional switching circuit 141. The microcontroller 151 generates an enable signal EN1 at contact 1511 and inputs the enable signal EN1 to the bidirectional switching circuit 141 via contact 1413. The bidirectional switching circuit 141 closes the first switch 1414 and the second switch 1415 according to the enable signal EN1. For example, when the enable signal EN1 is low, the bidirectional switching circuit 141 closes the first switch 1414 and the second switch 1415. In this way, the current flow between contact 1411 and contact 1412 can be cut off, thereby avoiding interference between contact 1411 and contact 1412.

[0210] Herein, the control circuit 15 stores a plurality of scenario modes, a plurality of exclusion parameters, and a plurality of power reduction procedures. The plurality of scenario modes correspond to a plurality of exclusion parameters, and the plurality of exclusion parameters correspond to a plurality of power reduction procedures. The plurality of scenario modes also correspond to different scenario setting signals. Each power reduction procedure is used to change a different operating parameter of one of the system circuit 11 and the control circuit 15, thereby reducing the total power consumption. In some embodiments, the correspondence between the plurality of scenario modes, the plurality of exclusion parameters, the plurality of power reduction procedures, and the plurality of scenario setting signals can be stored in the control circuit 15 in the form of a lookup table. In other words, the lookup table records the scenario mode corresponding to each scenario setting signal and the exclusion parameter corresponding to each scenario mode, and this lookup table is stored in the memory built into the control circuit 15. Each exclusion parameter indicates which power reduction procedures are to be excluded, i.e., it corresponds to one or more power reduction procedures (hereinafter referred to as a power reduction procedure combination). In some embodiments, the control circuit 15 can be implemented by a computing device such as a microcontroller and a system-on-a-chip.

[0211] Figure 5 A flowchart of a control method for a power receiving device provided in an embodiment of the present invention is shown below. Figure 1 and Figure 5First, the control circuit 15 detects the external connection status of the connector 13 via the configuration channel pin 132 (step S200) to confirm whether the connector 13 is connected to the power adapter 20 (step S201). For example, the control circuit 15 obtains the voltage level of the configuration channel pin 132 and determines whether the connector 13 is connected to the power adapter 20 based on whether the voltage level of the configuration channel pin 132 is greater than a connection threshold. Specifically, the power adapter 20 has a pull-up resistor and a configuration channel terminal, and the configuration channel terminal is connected to the pull-up resistor. The connector 13 has a pull-down resistor connected to the configuration channel pin 132. When the connector 13 is not connected to the power adapter 20, the configuration channel pin 132 is pulled down by the pull-down resistor to a low voltage level not greater than the connection threshold. When the connector 13 is connected to the power adapter 20, the configuration channel pin 132 is connected to the configuration channel terminal, causing the configuration channel pin 132 to be pulled up by the pull-up resistor to a high voltage level greater than the connection threshold. Thus, when the voltage level obtained by the control circuit 15 from the configuration channel pin 132 is greater than the connection threshold, the control circuit 15 can determine that the connector 13 has been connected to the power adapter 20. Conversely, when the voltage level obtained by the control circuit 15 from the configuration channel pin 132 is not greater than the connection threshold, the control circuit 15 can determine that the connector 13 has not been connected to the power adapter 20.

[0212] When the control circuit 15 detects that the external power adapter 20 is connected to the connector 13, the control circuit 15 communicates with the power adapter 20 via the configuration channel pin 132 to obtain the power supply quota of the power adapter 20 (step S202). For example, after the external power adapter 20 is connected to the connector 13, the power adapter 20 sends a power supply capability signal to the configuration channel pin 132 through the configuration channel terminal. The power supply capability signal includes the power supply options of the power adapter 20. The power supply options have multiple rated voltage values ​​and a rated current value corresponding to each rated voltage value. The combination formed by each rated voltage value and its corresponding rated current value is the power quota, which can be in accordance with the USB charging standard specification. For example, 5 volts (V) and 3 amps (A), 9V and 3A, 15V and 3A, 15V and 2A, 20V and 3.5A, 28V and 5A, 36V and 5A, 48V and 5A, etc. Specifically, the power quota can be obtained by multiplying each rated voltage value by its corresponding rated current value. The control circuit 15 obtains the power supply capability signal through the configuration channel pin 132 and parses the signal to obtain multiple power quotas from the power supply options. The control circuit 15 selects the largest of the multiple power quotas as the power supply quota supplied by the power adapter 20 to the powered device 10. After selecting the power supply quota, the control circuit 15 generates a power request signal based on the rated voltage and rated current values ​​corresponding to the power supply quota and sends the power request signal to the configuration channel terminal through the configuration channel pin 132. The power adapter 20 obtains the power request signal through the configuration channel terminal and responds to it, thereby providing power VBus_S to the powered device 10 with the rated voltage and rated current values ​​corresponding to the power supply quota.

[0213] Figure 6 This is a schematic diagram of a portion of the power communication circuit of the control circuit in an exemplary embodiment of the present invention. Figure 7 This is a schematic diagram of a portion of the configuration channel communication circuit of the connector in an exemplary embodiment of the present invention. In some embodiments, such as... Figure 2 , Figure 6 and Figure 7As shown, the control circuit 15 includes a power communication circuit 152, and the connector 13 includes a configuration channel communication circuit 133. The power communication circuit 152 can be implemented by a power integrated circuit (IC) IC2 and its matching circuit. The configuration channel communication circuit 133 can be implemented by a control integrated circuit IC3 and its matching circuit. The connection terminals C_CC1 and C_CC2 of the configuration channel communication circuit 133 are respectively connected to the fifth terminal CC1_1 and the sixth terminal CC2_1 of the connector 130. The contacts 1331 and 1332 of the connection terminals CC1_2 and CC2_2 of the configuration channel communication circuit 133 are respectively connected to the connection terminals CC1_3 and CC2_3 of the power communication circuit 152. Thus, the control circuit 15 can communicate with the configuration channel pin 132 and the power adapter 20 (e.g., transmission of power supply capability signals and power request signals) through the power communication circuit 152 and the configuration channel communication circuit 133 to select the power supply quota and enable the power adapter 20 to provide the power supply VBus_S. In some embodiments, a first filter circuit (e.g., a resistor and capacitor in series) is provided between the contact 1331 and the connection terminal CC1_2 to filter the signal transmitted by the connection terminal CC1_2, thereby reducing noise interference. Similarly, a second filter circuit (e.g., a resistor and capacitor in series) is provided between the contact 1332 and the connection terminal CC2_2 to reduce the chance of the signal transmitted by the connection terminal CC2_2 being interfered with by noise. In some embodiments, the first filter circuit and the second filter circuit can be the same or different.

[0214] Rereference Figure 1 and Figure 5 The control circuit 15 generates a power consumption threshold based on the obtained power supply quota and compares whether the total power consumption of the system circuit 11 is greater than the power consumption threshold (step S203). When the total power consumption is not greater than the power consumption threshold, it indicates that the powered device 10 can continuously and normally draw power from the power adapter 20 and operate. At this time, the control circuit 15 maintains the amount of total power consumption (step S204). When the total power consumption is greater than the power consumption threshold, it indicates that the power supply quota of the power adapter 20 may not be able to meet the total power consumption required by the system circuit 11. At this time, the control circuit 15 executes the power reduction procedure adjustment procedure (i.e., steps S205 to 208) to reduce the amount of total power consumption until the total power consumption is not greater than the power consumption threshold, so that the powered device 10 can normally draw power from the power adapter 20 and operate. The control circuit 15 generates the power consumption threshold using the selected power supply quota of the power adapter 20.

[0215] In some embodiments of step S203, the power supply quota of the selected power adapter 20 can be used as the power consumption threshold. In other words, after selecting the power supply quota, the control circuit 15 will directly compare whether the total power consumption of the system circuit 11 is greater than the power supply quota, and then decide whether to reduce the total power consumption based on the comparison result.

[0216] In some embodiments of step S203, the power consumption threshold may be the product of the power supply quota of the power adapter 20 and a proportionality constant (step S203). In other words, after selecting the power supply quota, the control circuit 15 compares whether the total power consumption is greater than the power consumption threshold obtained by multiplying the power supply quota by the proportionality constant (step S203), and then decides whether to reduce the total power consumption based on the comparison result. In this way, it can be ensured that when the power adapter 20 is affected by noise (e.g., a surge), the control circuit 15 can still accurately determine whether the power supply quota can meet the total power consumption required by the system circuit 11. The proportionality constant is less than 1, for example, the proportionality constant can be 0.8.

[0217] During the adjustment process, the control circuit 15 selects a corresponding scenario mode from a plurality of scenario modes based on the scenario setting signal generated by the setting circuit 12 (step S205). For example, when a first key combination or a first option graphic is pressed, the setting circuit 12 generates a first scenario setting signal in response to the first key combination or the first option graphic. When the setting circuit 12 generates the first scenario setting signal, the control circuit 15 looks up the first scenario setting signal in a lookup table (as shown in Table 1) to obtain the scenario mode (i.e., the first scenario mode) corresponding to the first scenario setting signal in the lookup table. Similarly, when a second key combination or a second option graphic is pressed, the setting circuit 12 generates a second scenario setting signal in response to the selected second key combination or the second option graphic. The control circuit 15 looks up the second scenario setting signal in a lookup table (as shown in Table 1) and finds the corresponding scenario mode (i.e., the second scenario mode) from the lookup table. Similarly, for example, the setting circuit 12 can generate a corresponding third scenario setting signal (or fourth scenario setting signal) in response to the pressed third button combination or third option graphic (or fourth button combination or fourth option graphic) and use the generated third scenario setting signal (or fourth scenario setting signal) to find the corresponding third scenario mode (or fourth scenario mode) from the lookup table.

[0218] Table 1

[0219]

[0220] Then, the control circuit 15 selects a corresponding exclusion parameter from a plurality of exclusion parameters according to the corresponding scenario mode selected in step S205 (step S206). For example, after the control circuit 15 selects the first scenario mode in step S205, the control circuit 15 obtains the exclusion parameter (i.e., the first exclusion parameter) corresponding to the first scenario mode recorded in the lookup table (as shown in Table 1). Similarly, when the second scenario mode is selected in step S205, the control circuit 15 can obtain the second exclusion parameter corresponding to the second scenario mode from the lookup table. And so on, the control circuit 15 can obtain the corresponding third exclusion parameter (or fourth exclusion parameter) from the lookup table when the third scenario mode (or fourth scenario mode) is selected.

[0221] Next, the control circuit 15, based on the corresponding exclusion parameter selected in step S206, excludes the corresponding power reduction program from the plurality of power reduction programs to generate a power reduction selection group (step S207). For example, if the control circuit 15 obtains the first exclusion parameter, it excludes the first power reduction program combination (i.e., one or more power reduction programs represented by the first exclusion parameter) from the plurality of power reduction programs and combines the remaining (i.e., unexcluded) power reduction programs into a power reduction selection group. Similarly, if the control circuit 15 obtains the second exclusion parameter, it excludes the second power reduction program combination from the plurality of power reduction programs. And so on, if the control circuit 15 obtains the third exclusion parameter (or the fourth exclusion parameter), it excludes the third power reduction program combination (or the fourth power reduction combination) from the plurality of power reduction programs, thereby generating a power reduction selection group.

[0222] Then, the control circuit 15 changes from executing the original power reduction program to executing at least one power reduction program in the power reduction selection group to reduce the total power consumption of the system circuit 11 (step S208).

[0223] In some embodiments, different scenario modes can be defined as different scenarios. For example, a scenario where the powered device 10 needs to be charged quickly (hereinafter referred to as the first scenario), a scenario where the powered device 10 is in an outdoor environment and needs to maintain display brightness (hereinafter referred to as the second scenario), a scenario where the data processing efficiency of the powered device 10 needs to be maintained (hereinafter referred to as the third scenario), and a scenario where the communication transmission efficiency of the powered device 10 needs to be maintained (hereinafter referred to as the fourth scenario). Therefore, by using the power reduction selection group, it can be ensured that the operating parameters changed by the executed power reduction procedure are suitable for the scenario currently selected by the user. For example, if the user selects the first scenario through the setting circuit 12 (i.e., the setting circuit 12 generates the first scenario setting signal), the charging efficiency of the powered device 10 can still be maintained after the control circuit 15 executes at least one power reduction procedure in the corresponding power reduction selection group. Similarly, if the user selects the second scenario through the setting circuit 12 (i.e., the setting circuit 12 generates the second scenario setting signal), the display brightness of the powered device 10 can still be maintained after step S208 is executed. Similarly, if the user selects the third (or fourth) scenario through the setting circuit 12, the data processing efficiency of the powered device 10 can still be maintained (or the communication transmission efficiency of the powered device 10 can still be maintained) after step S208 is executed.

[0224] Figure 8 A schematic diagram of another power receiving device provided in an embodiment of the present invention is shown below. Figure 8 In some embodiments, system circuit 11 includes a battery circuit 111. Battery circuit 111 is connected to power management circuit 14 and control circuit 15. Battery circuit 111 provides the function of storing electrical energy for powered device 10. A first power reduction procedure in a plurality of power reduction procedures is used to reduce a charging current of battery circuit 111 as an operating parameter. Thus, when the power reduction selection group generated in step S207 excludes the first power reduction procedure, the charging efficiency of powered device 10 can still be maintained. Furthermore, when the first power reduction procedure is executed, the reduced charging current can reduce the power consumption of battery circuit 111, thereby reducing the total power consumption of system circuit 11. In some embodiments, battery circuit 111 includes an energy storage component such as a primary battery or a secondary battery and a charging / discharging circuit 1110 connected to the energy storage component (e.g., a charging / discharging circuit 1110). Figures 9A to 9B (As shown). In some embodiments, the reduction in charging current can be determined based on the difference between the total power consumption and the power consumption threshold.

[0225] In some embodiments, the power management circuit 14 further includes a voltage regulation circuit (not shown). The voltage regulation circuit is connected to the contact 1412 of the bidirectional switching circuit 141 (e.g., ...). Figure 3(As shown). The voltage regulation circuit performs voltage regulation processing (e.g., voltage stabilization, boost, and / or bucking) on ​​the system power supply SYV output from point 1412 to generate the charging voltage CHG_IN (e.g., ...). Figures 9A to 9B (As shown).

[0226] Figures 9A-9B This is a schematic diagram of a portion of the charging and discharging circuit of the battery circuit in an exemplary embodiment of the present invention, as shown below. Figures 9A to 9B As shown, in some embodiments, contact 1112 of the charging / discharging circuit 1110 is connected to a voltage regulation circuit to obtain a charging voltage CHG_IN from the voltage regulation circuit. The charging / discharging circuit 1110 can be implemented by a power integrated circuit IC4 and its matching circuit. Contact 1113 of the charging / discharging circuit 1110 is connected to the positive terminal of the energy storage component of the battery circuit 111, and contact 1114 of the charging / discharging circuit 1110 is connected to the negative terminal of the energy storage component of the battery circuit 111. The charging / discharging circuit 1110 can generate battery voltage A_BATT and battery voltage B_BATT conforming to the charging specifications of the energy storage component at contacts 1113 and 1114 respectively, based on the charging voltage CHG_IN. Battery voltage A_BATT and battery voltage B_BATT can be positive and negative voltages, respectively. The charging / discharging circuit 1110 outputs a charging current to the energy storage component of the battery circuit 111 based on battery voltage A_BATT and battery voltage B_BATT to charge the energy storage component.

[0227] like Figures 4A to 4D As shown in Figures 9A to 9B, in some embodiments, contact 1115 of the charging / discharging circuit 1110 is connected to contact 1512 of the microcontroller 151, and contact 1116 of the charging / discharging circuit 1110 is connected to contact 1513 of the microcontroller 151. When the first power reduction procedure is executed by the control circuit 15, the microcontroller 151 generates a power reduction signal CHG_I2C_SDA at contact 1512 and a clock signal CHG_I2C_SCL at contact 1513 relating to the frequency period of the power reduction signal CHG_I2C_SDA. The charging / discharging circuit 1110 reduces the charging current of the energy storage component of the battery circuit 111 according to the power reduction signal CHG_I2C_SDA and the clock signal CHG_I2C_SCL. In some embodiments, the current reduction signal CHG_I2C_SDA and the clock signal CHG_I2C_SCL may be signal specifications conforming to the Inter-Integrated Circuit (I2C) or System Management Bus (SMBus) standards.

[0228] like Figures 4A to 4DAs shown in Figures 9A to 9B, in some embodiments, contact 1514 of microcontroller 151 is connected to contact 1113 of charging / discharging circuit 1110, and contact 1515 of microcontroller 151 is connected to contact 1114 of charging / discharging circuit 1110. Thus, microcontroller 151 can be powered according to battery voltage A_BATT and battery voltage B_BATT. In some embodiments, a linear regulator 1516 is provided between connection terminal DVCC1 and contact 1514 of microcontroller 151, and between connection terminal DVCC2 and contact 1515 of microcontroller 151. The linear regulator 1516 can convert battery voltage A_BATT and battery voltage B_BATT into a voltage suitable for microcontroller 151. For example, assuming that the battery voltages A_BATT and B_BATT are both 3V, the linear regulator 1516 can boost the battery voltages A_BATT and B_BATT to an input voltage of 3.3V, and input the 3.3V input voltage to the connection terminals DVCC1 and DVCC2 of the microcontroller 151 respectively.

[0229] Figure 10 A schematic diagram of another power receiving device provided in an embodiment of the present invention is shown below. Figure 10 In some embodiments, system circuit 11 includes a drive circuit 112 and a display circuit 113. Drive circuit 112 is connected to power management circuit 14 and control circuit 15. Display circuit 113 is connected to drive circuit 112. Drive circuit 112 generates a pulse width modulation signal to control the brightness of display circuit 113. Display circuit 113 provides the power receiving device 10 with the function of displaying data. A second power reduction procedure in a plurality of power reduction procedures is used to change the duty cycle of the pulse width modulation signal, which is an operating parameter of drive circuit 112, to reduce brightness. In some embodiments, the second power reduction procedure may also be to reduce the maximum brightness value, which is an operating parameter of display circuit 113. Thus, when the power reduction selection group generated in step S207 excludes the second power reduction procedure, the display brightness of power receiving device 10 can still be maintained. Furthermore, when the second power reduction procedure is executed, the display circuit 113, with reduced brightness, can reduce its power consumption, thereby reducing the total power consumption of system circuit 11. The display circuit 113 can be, for example, a projection display, a stereoscopic display, a light-emitting diode display, or other devices with display functions. In some embodiments, the reduction in brightness can be determined based on the difference between the total power consumption and the power consumption threshold. That is, the change in the duty cycle of the pulse width modulation signal or the change in the maximum brightness value can be determined based on the difference between the total power consumption and the power consumption threshold.

[0230] In some embodiments, the voltage regulation circuit of the power management circuit 14 generates a charging voltage CHG_IN (such as...) through the system power supply SYV. Figures 9A to 9B In addition to (as shown), the operating voltage V_VSYS of the drive circuit 112 can also be generated through the system power supply SYV (as shown). Figures 12A to 12B (As shown).

[0231] Figure 11 This is a schematic diagram of a portion of the display controller circuit in an exemplary embodiment of the present invention. Figures 12A-12B This is a schematic diagram of a portion of the driving circuit in an exemplary embodiment of the present invention, with reference to... Figure 11 and Figures 12A to 12B In some embodiments, the control circuit 15 includes a display controller 153. The display controller 153 can be implemented by a control integrated circuit IC5 and its matching circuit, and the drive circuit 112 can be implemented by a first drive integrated circuit IC6, a second drive integrated circuit IC7, and their matching circuits. Contacts 1121 and 1122 of the drive circuit 112 are connected to the voltage regulation circuit of the power management circuit 14 to obtain the operating voltage V_VSYS and to be in operating mode. Contacts 1123 and 1124 of the drive circuit 112 are connected to the display circuit 113 to output a first display voltage LED_OUT1 and a second display voltage LED_OUT2 to the display circuit 113 at contacts 1123 and 1124 respectively in operating mode. Thus, the light-emitting diodes of the display circuit 113 can light up. Contacts 1125 and 1126 of the drive circuit 112 are connected to contact 1531 of the display controller 153. When the second power reduction procedure is executed by the control circuit 15, the display controller 153 sends a duty cycle change signal PWM_C to the drive circuit 112. The display controller 153 can generate a duty cycle change ratio based on the difference between the total power consumption and the power consumption threshold, and set this ratio into the duty cycle change signal PWM_C. The drive circuit 112 analyzes the duty cycle change signal PWM_C to obtain the duty cycle change ratio. The drive circuit 112 changes the duty cycle of its pulse width modulation signal according to the duty cycle change ratio, thereby changing the flicker frequency of the light-emitting diodes in the display circuit 113. This reduces the brightness of the display circuit 113.

[0232] Figure 13 This is a schematic diagram of a portion of the notification circuit of the control circuit in an exemplary embodiment of the present invention, with reference to... Figures 4A to 4D and Figure 13In some embodiments, the control circuit 15 includes a notification circuit 154. The notification circuit 154 may be implemented by a control integrated circuit IC8 and its matching circuit. A contact 1541 of the notification circuit 154 is connected to a contact 1519 of the microcontroller 151, and a contact 1542 of the notification circuit 154 is connected to a contact 1518 of the microcontroller 151. In some embodiments, a third power reduction procedure in a plurality of power reduction procedures is used to reduce an operating frequency of the control circuit 15 as an operating parameter. For example, when the control circuit 15 is about to execute a third power reduction procedure, the notification circuit 154 generates an operating frequency adjustment signal BLSP_I2C_SDA at contact 1541 and a clock signal BLSP_I2C_SCL related to the clock cycle of the operating frequency adjustment signal BLSP_I2C_SDA at contact 1542. The operating frequency adjustment signal BLSP_I2C_SDA and the clock signal BLSP_I2C_SCL can conform to the signal specifications of integrated bus circuits or system management bus. Contact 1519 of microcontroller 151 receives the operating frequency adjustment signal BLSP_I2C_SDA, and contact 1518 of microcontroller 151 receives the clock signal BLSP_I2C_SCL. After being translated by the bidirectional translator 1517, the operating frequency adjustment signal BLSP_I2C_SDA and the clock signal BLSP_I2C_SCL are respectively input to the connection terminals USB1SDA and USB1SCL of microcontroller 151. Microcontroller 151 lowers its own operating frequency according to the translated operating frequency adjustment signal BLSP_I2C_SDA and the clock signal BLSP_I2C_SCL to reduce its own power consumption, thereby reducing the total power consumption of system circuit 11. Furthermore, when the power reduction selection group generated in step S207 excludes the third power reduction procedure, the data processing efficiency of the powered device 10 can still be maintained. In some embodiments, the reduction in operating frequency can be determined based on the difference between the total power consumption and the power consumption threshold.

[0233] Figure 14 A schematic diagram of another power receiving device provided in an embodiment of the present invention is shown below. Figure 14In some embodiments, system circuit 11 includes a wireless communication circuit 114. The wireless communication circuit 114 is connected to power management circuit 14 and control circuit 15. The wireless communication circuit 114 provides wireless communication functionality between the powered device 10 and an external device. A fourth power reduction procedure in a plurality of power reduction procedures is used to reduce the radio frequency power of the wireless communication circuit 114 as an operating parameter. Thus, when the power reduction selection group generated in step S207 excludes the fourth power reduction procedure, the communication transmission efficiency of the powered device 10 can still be maintained. Furthermore, when the fourth power reduction procedure is executed, the reduced radio frequency power can reduce the power consumption of the wireless communication circuit 114, thereby reducing the total power consumption of system circuit 11. In some embodiments, the wireless communication circuit 114 can be a Wi-Fi communication circuit. In some embodiments, the reduction in radio frequency power can be determined based on the difference between the total power consumption and a power consumption threshold.

[0234] Figure 15 This is a schematic diagram of a portion of the communication control sub-circuit of the control circuit in an exemplary embodiment of the present invention. Figure 16 This is a schematic diagram of a portion of the wireless communication circuit in an exemplary embodiment of the present invention, with reference to... Figure 15 and Figure 16In some embodiments, the control circuit 15 includes a communication control sub-circuit 155. The communication control sub-circuit 155 can be implemented by a control integrated circuit IC9 and its matching circuit. The wireless communication circuit 114 can be implemented by a communication integrated circuit IC10 and its matching circuit. Contacts 1551, 1552, 1553, and 1554 of the communication control sub-circuit 155 are respectively connected to contacts 1141, 1142, 1143, and 1144 of the wireless communication circuit 114. The communication control sub-circuit 155 is used to control the operation of the wireless communication circuit 114. The signals transmitted by contacts 1551, 1552, 1141, and 1142 correspond to a first channel of the wireless communication circuit 114. The signals transmitted by contacts 1553, 1554, 1143, and 1144 correspond to a second channel of the wireless communication circuit 114. The transmission frequency of the second channel differs from that of the first channel. For example, if the transmission frequency of the first channel is 2.4 GHz, the transmission frequency of the second channel is 5 GHz. For instance, when the control circuit 15 intends to execute the fourth power reduction procedure, the communication control sub-circuit 155 generates a first communication data signal CH0_DATA with a first power reduction packet at contact 1552 and a clock signal CH0_CLK with a frequency period related to the first communication data signal CH0_DATA at contact 1551. The communication control sub-circuit 155 also generates a second communication data signal CH1_DATA with a second power reduction packet at contact 1554 and a clock signal CH1_CLK with a frequency period related to the second communication data signal CH1_DATA at contact 1553. The wireless communication circuit 114 analyzes the first power reduction packet based on the first communication data signal CH0_DATA and the clock signal CH0_CLK to reduce the communication quality of the first channel (e.g., reducing the Received Signal Strength Indication (RSSI) value of the first channel). The wireless communication circuit 114 analyzes the second power reduction packet based on the second communication data signal CH1_DATA and the clock signal CH1_CLK to reduce the communication quality of the second channel (e.g., reducing the RSSI value of the second channel). In this way, the radio frequency power can be reduced when the fourth power reduction procedure is executed.

[0235] Figure 17 A schematic diagram of another power receiving device provided in an embodiment of the present invention is shown below. Figure 17In some embodiments, system circuit 11 includes an audio circuit 115. The audio circuit 115 is connected to power management circuit 14 and control circuit 15. The audio circuit 115 provides the powered device 10 with the function of playing audio and / or receiving audio. A fifth power reduction procedure in a plurality of power reduction procedures is used to reduce an audio power of the audio circuit 115 as an operating parameter. Thus, when the fifth power reduction procedure is executed, the reduced audio power can reduce the power consumption of the audio circuit 115, thereby reducing the total power consumption of system circuit 11. In some embodiments, the audio circuit 115 may be, for example, a speaker, a microphone, etc. In some embodiments, the reduction in audio power may be determined based on the difference between the total power consumption and a power consumption threshold.

[0236] Figure 18 This is a schematic diagram of a portion of the audio control sub-circuit of the control circuit in an exemplary embodiment of the present invention. Figure 19 This is a schematic diagram of a portion of the audio circuit in an exemplary embodiment of the present invention, with reference to... Figure 18 and Figure 19In some embodiments, the control circuit 15 includes an audio control sub-circuit 156. The audio control sub-circuit 156 may be implemented by a control integrated circuit IC 11 and its matching circuit. The audio circuit 115 may be implemented by an audio integrated circuit IC 12 and its matching circuit. The connection terminals LPI_GPIO_18, LPI_GPIO_19, LPI_GPIO_20, LPI_GPIO_21, LPI_GPIO_22, LPI_GPIO_23, LPI_GPIO_24 and LPI_GPIO_25 ​​of the audio control sub-circuit 156 (these connection terminals can form a first audio pulse density modulation (CDC-PDM) connection terminal) are connected to the connection terminals CDC_PDM_CLK, CDC_PDM_SYNC, CDC_PDM_TX, CDC_PDM_RX0, CDC_PDM_RX1, CDC_PDM_RX2, CDC_PDM_RX0_DRE and CDC_PDM_RX1_DRE of the audio circuit 115 (these connection terminals can form a second audio pulse density modulation connection terminal that matches the first audio pulse density modulation connection terminal). Audio control subcircuit 156 is used to control the operation of audio circuit 115. For example, when control circuit 15 wants to execute the fifth power reduction procedure, audio control subcircuit 156 generates a pulse density modulation signal at the first audio pulse density modulation connection terminal and transmits it to audio circuit 115 via the second audio pulse density modulation connection terminal. Audio circuit 115 reduces the amplitude of the audio signal it plays according to the pulse density modulation signal, thereby reducing the audio power. In some embodiments, the reduction in audio amplitude can be determined based on the difference between total power consumption and a power consumption threshold.

[0237] In some embodiments, a sixth power-down procedure among a plurality of power-down procedures is used to reduce a polling frequency, which is an operating parameter of the control circuit 15. The polling frequency is the frequency at which each peripheral device (e.g., drive circuit 112, power management circuit 14, wireless communication circuit 114, audio circuit 115) is repeatedly polled to determine if it requires service. Thus, when the sixth power-down procedure is executed, the reduced polling frequency can decrease the power consumption of the control circuit 15, thereby reducing the total power consumption of the system circuit 11. In some embodiments, the reduction in polling frequency can be determined based on the difference between the total power consumption and a power consumption threshold.

[0238] In summary, according to any embodiment, the powered device, by implementing its control method, can determine whether the power supply quota of the power adapter meets the total power consumption of the system circuit, and reduce the total power consumption when the power supply quota does not meet the total power consumption. This allows the powered device to continue drawing power and operating normally from the power adapter even when connected to an external power adapter that is not compatible with its specifications. In some embodiments, the powered device, by implementing its control method, can eliminate unsuitable power reduction procedures in the current situation, enabling the powered device to quickly draw power from a power adapter that is not compatible with its specifications.

[0239] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0240] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A power receiving device, characterized in that, include: System circuitry; The circuit is configured to generate different context setting signals in response to different inputs; A connector suitable for connecting an external power adapter, the connector including power pins and configuration channel pins; A power management circuit, connected to the connector and the system circuit, is used to draw power from the power pins when the power adapter is connected to the connector, provide system power to the system circuit based on the power supply, and detect the total power consumption of the system circuit; and A control circuit, connected to the system circuit, the setting circuit, the connector, and the power management circuit, stores a plurality of scenario modes, a plurality of exclusion parameters, and a plurality of power reduction programs, wherein the plurality of scenario modes correspond to different scenario setting signals and the plurality of exclusion parameters, the plurality of exclusion parameters correspond to the plurality of power reduction programs, and each power reduction program is used to change different operating parameters of one of the system circuit and the control circuit; The control circuit is used to communicate with the power adapter via the configuration channel pin to obtain the power supply quota of the power adapter; as well as The control circuit is further configured to, when the total power consumption is greater than a power consumption threshold, select a corresponding scenario mode from the plurality of scenario modes according to the scenario setting signal generated by the setting circuit, select a corresponding exclusion parameter from the plurality of exclusion parameters according to the corresponding scenario mode, exclude a corresponding power reduction procedure from the plurality of power reduction procedures according to the corresponding exclusion parameter to generate a power reduction selection group, and execute at least one of the power reduction procedures in the power reduction selection group to reduce the total power consumption, wherein the power consumption threshold is generated based on the obtained power supply quota.

2. The power receiving device according to claim 1, characterized in that, The system circuit includes a battery circuit, and the first power reduction procedure in the plurality of power reduction procedures is used to reduce the charging current of the battery circuit as an operating parameter.

3. The power receiving device according to claim 1, characterized in that, The system circuit includes a display circuit and a driving circuit. The driving circuit generates a pulse width modulation signal to control the brightness of the display circuit. The second power reduction program in the plurality of power reduction programs is used to change the duty cycle of the pulse width modulation signal, which is the operating parameter of the driving circuit, or to change the maximum brightness value of the display circuit to reduce the brightness.

4. The power receiving device according to claim 1, characterized in that, The third power reduction procedure in the plurality of power reduction procedures is used to reduce the operating frequency of the control circuit as an operating parameter.

5. The power receiving device according to claim 1, characterized in that, The system circuit includes a wireless communication circuit, and the fourth power reduction procedure in the plurality of power reduction procedures is used to reduce the radio frequency power of the wireless communication circuit as an operating parameter.

6. The power receiving device according to claim 1, characterized in that, The system circuit includes an audio circuit, and the fifth power reduction procedure in the plurality of power reduction procedures is used to reduce the audio power of the audio circuit as an operating parameter.

7. The power receiving device according to claim 1, characterized in that, The sixth power reduction procedure in the plurality of power reduction procedures is used to reduce the polling frequency of the control circuit as an operating parameter.

8. The power receiving device according to claim 1, characterized in that, The setting circuit is the user interface.

9. The power receiving device according to claim 8, characterized in that, The user interface is a keyboard with multiple keys or a touch display panel that displays multiple option graphics.

10. A control method for a power receiving device, characterized in that, include: The power adapter is communicated via the configuration channel pins of the connector to obtain the power supply quota of the power adapter, and a power consumption threshold is generated based on the obtained power supply quota. When the power adapter is connected to the connector, a power supply is drawn through the power pin of the connector, and a system power supply is provided to the system circuit according to the power supply. Detect the total power consumption of the system circuit; When the total power consumption is greater than the power consumption threshold, a corresponding scenario mode is selected from a plurality of scenario modes according to the scenario setting signal generated by the setting circuit. The plurality of scenario modes correspond to a plurality of exclusion parameters and correspond to different plurality of scenario setting signals, and the scenario setting signal generated by the setting circuit is one of the plurality of scenario setting signals. Based on the corresponding scenario pattern, select the corresponding exclusion parameter from the plurality of exclusion parameters; According to the corresponding exclusion parameters, a power reduction procedure is excluded from a plurality of power reduction procedures to generate a power reduction selection group, wherein the plurality of exclusion parameters correspond to the plurality of power reduction procedures respectively, and each power reduction procedure is used to change different operating parameters of one of the system circuit and the control circuit. and Execute at least one of the power reduction procedures from the selected power reduction group to reduce the total power consumption.

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