CN116413525A - Power supply capability judging device, electronic device and power supply capability judging method - Google Patents
Power supply capability judging device, electronic device and power supply capability judging method Download PDFInfo
- Publication number
- CN116413525A CN116413525A CN202210004754.9A CN202210004754A CN116413525A CN 116413525 A CN116413525 A CN 116413525A CN 202210004754 A CN202210004754 A CN 202210004754A CN 116413525 A CN116413525 A CN 116413525A
- Authority
- CN
- China
- Prior art keywords
- power
- load
- power supply
- circuit
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 238000010586 diagram Methods 0.000 description 13
- 230000008054 signal transmission Effects 0.000 description 3
- 231100000957 no side effect Toxicity 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Sources (AREA)
Abstract
The invention provides a power supply capacity judging device, which is used for judging the power supply capacity of a power supply and comprises a connector, a load circuit, a switch circuit, a voltage monitoring circuit and a processing circuit, wherein the connector is used for receiving the power supply to output an input voltage at a power supply output end, the switch circuit is electrically connected between the load circuit and the power supply output end, the voltage monitoring circuit is electrically connected with the power supply output end and is used for monitoring the input voltage to generate a monitoring voltage value, the processing circuit is electrically connected with the voltage monitoring circuit and the switch circuit and is used for controlling the switch circuit, and the processing circuit is controlled by the processing circuit to receive the monitoring voltage value and judge the power supply capacity of the power supply according to the monitoring voltage value.
Description
Technical Field
The present invention relates to a power capability determining device, and more particularly, to a power capability determining device and method capable of outputting a power capability index according to power capability.
Background
The existing universal serial bus (Universal Serial Bus, USB) interface can provide power with a power capability of 5 volts 500 milliamps belonging to USB 2.0 and 5 volts 900 milliamps belonging to USB 3.0 or more, while the USB power adapter (adapter) on the market can supply power with a power capability exceeding 5 volts 500 milliamps (such as 5 volts 1 amp or 5 volts 2.4 amps), however, when the user wants to use the USB interface or the power provided by the USB power adapter, the user may not know the power capability of the USB interface or the power provided by the USB power adapter. Therefore, the user may plug the power cord of the electronic product requiring the higher power supply capability into the USB power supply capable of providing only the lower power supply capability, so that the electronic product may be not started due to the insufficient power supply. In addition, high definition multimedia interfaces (High Definition Multimedia Interface, HDMI) may also suffer from similar problems. Therefore, a new method and related architecture are needed to achieve fast power capability determination without side effects or with fewer side effects to solve the related problems.
Disclosure of Invention
An objective of the present invention is to provide a power capability determining device and a method thereof, wherein the power capability determining device can determine the power capability of a connected power source, so that an electronic device having the power capability determining device of the present invention can set different processing modes according to the power capability of the current power source, thereby solving the related problems of the prior art.
According to an embodiment of the present invention, a power capability determining device for determining a power capability of a power source includes a connector, a load circuit, a switch circuit, a voltage monitor circuit and a processing circuit, wherein the connector is configured to receive the power source to output an input voltage at a power output terminal, the load circuit includes at least one load, the switch circuit is electrically connected between the load circuit and the power output terminal, the switch circuit includes at least one switch, the voltage monitor circuit is electrically connected to the power output terminal and is configured to monitor the input voltage to generate a monitor voltage value, the processing circuit is electrically connected to the voltage monitor circuit and the switch circuit and is configured to control the switch circuit, and the processing circuit is configured to receive the monitor voltage value under the control of the processing circuit and determine the power capability of the power source according to the monitor voltage value.
According to another embodiment of the present invention, an electronic device includes a power capability determining device, wherein the electronic device is further configured to process an input signal and set a processing mode of the input signal according to the power capability of the power.
According to another embodiment of the present invention, a power capability judging method includes: receiving a power supply to output an input voltage at a power supply output terminal; monitoring the input voltage to generate a monitored voltage value; electrically connecting a switching circuit between the power output terminal and a load circuit, wherein the load circuit comprises at least one load, and the switching circuit comprises at least one switch; controlling the switching circuit; and under the control of the switch circuit, receiving the monitoring voltage value, and judging a power supply capacity of the power supply according to the monitoring voltage value.
One of the benefits of the invention is that the power supply capacity of a power supply can be rapidly judged and a power supply capacity index can be generated by different loads, so that an electronic device with the power supply capacity judging device can judge whether the electronic device can be started or not according to the power supply capacity index, or further execute different operations according to different power supply capacity indexes. Compared with the prior related art, the power supply capability judging device can realize power supply capability judgment under the condition of no side effect or lower side effect.
Drawings
Fig. 1 is a schematic diagram of a power capability determining apparatus for performing power capability determination in an electronic device according to an embodiment of the invention.
Fig. 2 is a block diagram of a power capability determining apparatus according to a first embodiment of the present invention.
Fig. 3 is a block diagram of a power capability determining apparatus according to a second embodiment of the present invention.
FIG. 4 is a flowchart of a power capability determination method according to an embodiment of the invention.
Fig. 5 is a block diagram of a power capability determining apparatus according to an embodiment of the invention applied to a playing system with a connecting device.
Fig. 6 is a schematic view of the connector product shown in fig. 5.
Fig. 7 is a block diagram of a power capability determining apparatus applied to a playback system having a patch cord according to an embodiment of the invention.
Fig. 8 is a schematic diagram of the patch cord product shown in fig. 7.
Symbol description:
100. 300: power supply capacity judging device
102. 302: connector with a plurality of connectors
104. 304: voltage monitoring circuit
106. 306: processing circuit
110. 310: switching circuit
111. 311: first switch
112. 312: second switch
113: third switch
120. 320: load circuit
121. 321: first load
122. 322: second load
123: third load
200: electronic device
202: input interface connector
204: signal processing circuit
206: output interface connector
208: power interface connector
210: power supply
400: flow chart
S402 to S428: step (a)
500: connecting device
502. 740: USB cable
504. 760: player
506. 750: display device
510: USB connector
512. 730: HDMI connector
700: patch cord
Pwr_idx: power supply capability index
N_PWR, N_PWR1: power supply output terminal
V_in, v_in1: monitoring voltage value
V_th, v_th1: threshold value
Detailed Description
Referring to fig. 1, fig. 1 is a schematic diagram of a power capability determining apparatus 100 applicable to power capability determination in an electronic device 200 according to an embodiment of the invention. As shown in fig. 1, the electronic device 200 may include an input interface connector 202, a signal processing circuit 204, an output interface connector 206, a power interface connector 208, and the power capability determining device 100 of the present invention. The input interface connector 202 is configured to receive an input signal and transmit the input signal to the signal processing circuit 204, the signal processing circuit 204 is configured to process the input signal and generate an output signal, and the output interface connector 206 is configured to output the output signal. The power interface connector 208 is configured to receive a power source 210 and transmit the power source 210 to the signal processing circuit 204 and the power capability determining device 100. Any of the input interface connector 202, the output interface connector 206, and the power interface connector 208 may be a universal serial bus (Universal Serial Bus, USB) connector or a high definition multimedia interface (High Definition Multimedia Interface, HDMI) connector. In some embodiments, the input interface connector 202 and the power interface connector 208 are implemented as the same connector, for example, when the input signal is from a player and the input interface is HDMI, the input interface connector 202 and the power interface connector 208 are combined into a single HDMI connector and receive an input signal and a power source from the player at the same time. In some embodiments, the output interface connector 206 and the power interface connector 208 are implemented as the same connector, for example, when the output signal is output to a display and the output interface is USB, the output interface connector 206 and the power interface connector 208 are combined into a single USB connector and output an output signal to the display and receive a power source from the display at the same time.
The power capability determining apparatus 100 is configured to output a power capability index pwr_idx to the signal processing circuit 204, however, the power capability index pwr_idx generated according to the power interface may be different, and the two embodiments are provided in the present invention. Referring to fig. 2, fig. 2 is a block diagram of a power capability determining apparatus 100 according to a first embodiment of the invention. As shown in fig. 2, the power capability determining apparatus 100 of the first embodiment of the present invention includes a connector 102, a voltage monitoring circuit 104, a switching circuit 110, a load circuit 120 and a processing circuit 106. The connector 102 is configured to receive a power source (e.g., the power source 210 connected to the power interface connector 208 shown in fig. 1) to output an input voltage at a power output terminal n_pwr. In the present embodiment, the connector 102 is a USB power connector, wherein if the power interface connector 208 of the electronic device 200 is a USB interface, the connector 102 and the power interface connector 208 can be combined into a single USB power connector. The load circuit 120 includes a plurality of different loads (e.g., a first load 121, a second load 122, and a third load 123), the switch circuit 110 is electrically connected between the load circuit 120 and the power output terminal n_pwr of the connector 102, wherein the switch circuit 110 includes a plurality of switches electrically connected to the different loads in the load circuit 120, e.g., the switch circuit 110 includes a first switch 111, a second switch 112, and a third switch 113, and the first switch 111, the second switch 112, and the third switch 113 are electrically connected to the first load 121, the second load 122, and the third load 123, respectively. The voltage monitor circuit 104 is electrically connected to the power output terminal n_pwr of the connector 102, and is used for monitoring the input voltage to generate a monitored voltage value v_in. The processing circuit 106 is electrically connected to the voltage monitoring circuit 104 and the switching circuit 110, and is configured to control the first switch 111, the second switch 112, and the third switch 113, and receive the monitored voltage value v_in and determine a power supply capability of the power supply (e.g. the power supply 210 shown IN fig. 1) according to the monitored voltage value v_in under the control of the switching circuit 110 by the processing circuit 106.
For example, when the connector 102 receives a USB power and outputs an input voltage, the voltage monitor circuit 104 monitors and detects the input voltage and generates a monitor voltage value v_in, and the processing circuit 106 determines whether the monitor voltage value v_in is greater than a threshold v_th. Initially, the first switch 111, the second switch 112 and the third switch 113 are all turned off (switched off), and the threshold v_th may be set to 4.75 volts because the lowest voltage of the USB power supply at the current that the USB power supply can supply is 4.75 volts (V) IN the relevant specification of the USB, if the monitored voltage v_in (i.e. the input voltage) is not greater than the threshold v_th (e.g. 4.75 volts), the processing circuit 106 generates a damaged power capability Index index_0 (i.e. pwr_idx=index_0) to indicate the power capability (i.e. power failure) of the power supply. If the monitored voltage v_in (i.e., the input voltage) is greater than the threshold v_th (e.g., 4.75 volts), the processing circuit 106 turns on (switch on) the first switch 111 to electrically connect the power output n_pwr to the first load 121 (the remaining second switch 112 and the third switch 113 remain turned off (switch off)), and determines that the monitored voltage v_in is present, if the monitored voltage v_in is not greater than the threshold v_th (e.g., 4.75 volts), the processing circuit 106 generates a first power Index index_1 (i.e., pwr_idx=index_1); if the monitored voltage v_in is still greater than the threshold v_th, the processing circuit 106 turns off the first switch 111 and turns on the second switch 112, and the third switch 113 remains turned off. IN the present embodiment, the first load 121 is set as a load for detecting whether the power supply can provide 0.5 ampere current, that is, when the monitored voltage v_in of the power supply output terminal n_pwr is electrically connected to the first load 121 is greater than the threshold v_th (e.g. 4.75 volts), the power supply capability of the power supply can output 0.5 ampere current, but the invention is not limited thereto, and the load value IN the load circuit can be changed according to the requirement. The processing circuit 106 turns on the second switch 112 to electrically connect the power output terminal n_pwr to the second load 122 (the remaining first switch 111 and the third switch 113 remain turned off), and determines the monitored voltage value v_in at the moment, and if the monitored voltage value v_in at the moment is not greater than the threshold v_th (e.g. 4.75 volts), the processing circuit 106 generates a second power capability Index index_2 (i.e. pwr_idx=index_2); if the monitored voltage v_in is greater than the threshold v_th, the processing circuit 106 turns off the second switch 112 and turns on the third switch 113, and the first switch 111 remains turned off. The processing circuit 106 turns on the third switch 113 to electrically connect the power output terminal to the third load 123 (the remaining first switch 111 and the second switch 112 remain turned off), and determines the monitored voltage value v_in at the moment, if the monitored voltage value v_in at the moment is not greater than the threshold v_th (e.g. 4.75 volts), the processing circuit 106 generates a third power Index index_3 (i.e. pwr_idx=index_2); if the monitored voltage v_in is still greater than the threshold v_th, the processing circuit 106 generates a fourth power capability Index index_4 (i.e., pwr_idx=index_4).
In a first example of the present invention, the connector 102 is a USB power connector. Accordingly, the first load 121 may be set as a load for detecting whether the power supply can supply a current of 0.5 amperes, the second load 122 may be set as a load for detecting whether the power supply can supply a current of 1 amperes, and the third load 123 may be set as a load for detecting whether the power supply can supply a current of 1.5 amperes, but the present invention is not limited thereto and the load value in the load circuit may be changed according to the need. In other words, when the power capability judging device 100 generates the damage power capability Index index_0, it represents that the power may be damaged; when the power capability determining device 100 generates the first power capability Index index_1, it represents that the current provided by the power source is less than 0.5 ampere; when the power capability determining device 100 generates the second power capability Index index_2, it represents that the current that the power source can provide is more than 0.5 ampere and less than 1 ampere; when the power capability determining device 100 generates the third power capability Index index_3, it represents that the current that the power source can provide is more than 1 ampere and less than 1.5 amperes; and when the power capability determining apparatus 100 generates the fourth power capability Index index_4, it means that the current that the power source can supply is 1.5 amperes or more.
According to the above configuration, the power capability determining apparatus 100 of the first embodiment of the present invention can determine a power capability of a USB power source, and inform the power capability of the power source 210 used by the electronic device 200 by outputting different power capability indexes pwr_idx, and the electronic device 200 starts different functions according to the power capability indexes pwr_idx. For example, if the electronic device 200 of fig. 1 is a signal processing device for processing a video/audio signal, the electronic device 200 does not perform image processing when the power capability Index pwr_idx received by the signal processing circuit 204 of the electronic device 200 is the damaged power capability Index index_0 or the first power capability Index index_1; when the power capability Index pwr_idx received by the signal processing circuit 204 is the second power capability Index index_2, the electronic device 200 performs only the frame size Scaling (Scaling) on the input signal; when the power capability Index pwr_idx received by the signal processing circuit 204 is the third power capability Index index_3, the electronic device 200 performs image processing (e.g. image processing such as adjusting the Sharpness (sharp) and improving the resolution (Super resolution)) of the input signal by scaling the picture size and presetting (Default); when the power capability Index pwr_idx received by the signal processing circuit 204 is the fourth power capability Index index_4, the electronic device 200 performs the frame size scaling, the scene detection and the corresponding image processing setting on the input signal, and performs the image processing. In general, the power capability index pwr_idx indicates that the higher the current that the power source can provide, the more or more complex image processing can be performed on the input signal by the electronic device 200. It should be noted that the above examples of operations corresponding to different values of the power capability index pwr_idx are only used for illustration, and are not limiting of the present invention.
The power capability determining apparatus 300 according to the second embodiment of the present invention is used for determining the power capability of the HDMI power source. Referring to fig. 3, fig. 3 is a block diagram of a power capability determining apparatus 300 according to a second embodiment of the invention. The power capability determination device 100 shown in fig. 1 may be practiced instead by the power capability determination device 300. As shown in fig. 3, the power capability determining apparatus 300 according to the second embodiment of the present invention includes a connector 302, a voltage monitoring circuit 304, a switch circuit 310, a load circuit 320 and a processing circuit 306, wherein the load circuit 320 includes a plurality of different loads (e.g. a first load 321 and a second load 322), the switch circuit 310 includes a plurality of switches electrically connected to the different loads in the load circuit 320, for example, the switch circuit 310 includes a first switch 311 and a second switch 312, and the first switch 311 and the second switch 312 are electrically connected to the first load 321 and the second load 322, respectively. The power capability judging device 300 according to the second embodiment of the present invention is different from the power capability judging device 100 according to the first embodiment in that: the connector 302 is an HDMI power connector, and the switch circuit 310 and the load circuit 320 respectively include two switches and two loads, and similarly, if the power interface connector 208 of the electronic device 200 is an HDMI interface, the connector 302 and the power interface connector 208 may be combined into a single HDMI power connector. Similarly, when the connector 302 receives an HDMI power and outputs an input voltage, the voltage monitor circuit 304 monitors and detects the input voltage and generates a monitor voltage v_in1, and the processing circuit 306 determines whether the monitor voltage v_in1 is greater than a threshold v_th1. Initially, both the first switch 321 and the second switch 322 remain off (switch off), and if the monitored voltage v_in1 (i.e. the input voltage) is not greater than the threshold v_th1, the processing circuit 306 generates a damaged power capability Index index_0 (i.e. pwr_idx=index_0) to indicate the power capability (i.e. power failure) of the HDMI power. If the monitored voltage v_in1 (i.e., the input voltage) is greater than the threshold v_th1, the processing circuit 306 turns on the first switch 311 to electrically connect the power output n_pwr1 of the connector 302 to the first load 321 (while the second switch 322 is still turned off), and determines the monitored voltage v_in1, and if the monitored voltage v_in1 is not greater than the threshold v_th1, the processing circuit 306 generates a first power Index index_1 (i.e., pwr_idx=index_1); if the monitored voltage v_in1 is greater than the threshold v_th1, the processing circuit 306 turns off the first switch 311 and turns on the second switch 312 to electrically connect the power output terminal n_pwr1 to the second load 322, and determines the monitored voltage v_in1, and if the monitored voltage v_in1 is not greater than the threshold v_th1, the processing circuit 306 generates a second power capability Index index_2 (i.e., pwr_idx=index_2); if the monitored voltage v_in1 is greater than the threshold v_th1, the processing circuit 306 generates a third power capability Index index_3 (i.e., pwr_idx=index_3). It should be noted that the first load 321 and the second load 322 may set their load values according to the requirements, for example, the first load 321 may be set to a load that detects whether the power supply can provide 0.05 ampere of current, and the second load 322 may be set to a load that detects whether the power supply can provide 0.3 ampere of current, but the invention is not limited thereto.
Referring to fig. 4, fig. 4 is a flowchart 400 of a power capability determination method according to an embodiment of the invention. Wherein if the end result is substantially the same, these steps need not be performed exactly in the order shown in fig. 4. The method of the invention comprises the following steps:
step S402: receiving a power supply to output an input voltage;
step S404: monitoring the input voltage to generate a monitored voltage value;
step S406: whether the monitored voltage value is greater than a threshold value; if not, the flow proceeds to step S408; if yes, the flow proceeds to step S410;
step S408: generating a damage power capability index;
step S410: opening a first switch to enable the input voltage to be conducted to a first load;
step S412: whether the monitored voltage value is greater than the threshold value; if not, the flow proceeds to step S414; if yes, the flow proceeds to step S416;
step S414: generating a first power capability index;
step S416: closing the first switch and opening a second switch to enable the input voltage to be conducted to a second load;
step S418: whether the monitored voltage value is greater than the threshold value; if not, the flow proceeds to step S420; if yes, the flow proceeds to step S422;
step S420: generating a second power capability index;
step S422: closing the second switch and opening a third switch to enable the input voltage to be conducted to a third load;
step S424: whether the monitored voltage value is greater than the threshold value; if not, the flow proceeds to step S426; if yes, the flow proceeds to step S428;
step S426: generating a third power capability index; and
step S428: a fourth power capability index is generated.
It should be noted that, the flowchart 400 of the power capability determining method is an example of the power capability determining apparatus 100 according to the first embodiment of the present invention having three loads, but the present invention is not limited thereto, and in particular, the number of loads in the load circuit may be changed according to the requirement. For example, if the load circuit has only a first load and a second load, the step S418 should be modified as follows: whether the monitored voltage value is greater than the threshold value; if not, the flow proceeds to step S420; if yes, the flow proceeds to step S426, and the processing flow ends after the second/third power capability index is generated.
The power capability determining apparatus 100/300 of the present invention can be applied to an audio/video apparatus, such as a connection device (dongle) or a adapter cable (adapter cable) for transmitting audio/video signals from a player to a display. For example, referring to fig. 5 and fig. 6 together, fig. 5 is a block diagram of a power capability determining apparatus 100 according to an embodiment of the invention applied to a playing system having a connection apparatus 500, and fig. 6 is a schematic diagram of a connection apparatus product shown in fig. 5. As shown in fig. 5, the power supply capability determination device 100 is implemented in a connection device 500. One end of the connection device 500 (e.g., HDMI connector 512) is coupled to the display 506, for example, connected using an HDMI connector or plugged into a port (port) of the display 506 using an HDMI plug, and the other end of the connection device 500 (e.g., USB connector 510) is coupled to a USB cable 502 and coupled to the player 504 via the USB cable 502. In this embodiment, the input signal is transmitted to the signal processing circuit 204 through the USB connector 510, and the power is transmitted to the signal processing circuit 204 and the power capability determining device 100 through the USB connector 510. After receiving the USB power, the power capability determining apparatus 100 generates and transmits a power capability index to the signal processing circuit 204 according to the USB power, and the signal processing circuit 204 performs a corresponding operation according to the power capability index. As shown in fig. 6, the connection device 500 may be implemented in this product structure. It should be noted that fig. 5 and 6 only show one of the various embodiments of the present invention. Therefore, a playing system with the connection device 500 is not limited to the embodiment shown in fig. 5 and 6. For example, the connection device 500 may also be designed as a device that is inserted into or coupled to the player, i.e., one end of the connection device 500 is coupled to the player 504 and the other end is coupled to the display 506 via a cable or transmission line.
For another example, referring to fig. 7 and fig. 8 together, fig. 7 is a block diagram of a power capability determining apparatus 100 according to an embodiment of the invention applied to a playing system having a patch cord 700, and fig. 8 is a schematic diagram of a patch cord product shown in fig. 7. As shown in fig. 7, the power capability determination device 100 is implemented in a patch cord 700. One end of the patch cord 700 (e.g., HDMI connector 730) is coupled to the display 750, for example, with a connector connection or plugged into one port of the display 750, and the other end of the patch cord 700 is coupled to the player 760, for example, with a connector connection or plugged into one port of the player 760. In this embodiment, the signal transmission device including the signal processing device is a signal transmission component disposed on a signal transmission path between the player and the display. The input signal is transmitted to the signal processing circuit 204 through the USB cable 740, and the power is transmitted to the signal processing circuit 204 and the power capability determining device 100 through the USB connector 740. After receiving the USB power, the power capability determining apparatus 100 generates and transmits a power capability index to the signal processing circuit 204 according to the USB power, and the signal processing circuit 204 performs a corresponding operation according to the power capability index. As shown in fig. 8, the patch cord 700 may be implemented according to a product structure, and the power capability determination device 100 may be disposed in a relatively large-sized connector at two ends of the patch cord 700. It should be noted that fig. 7 and 8 only show one of the various embodiments of the present invention. Therefore, a play system with the patch cord 700 is not limited to the embodiments shown in fig. 7 and 8.
One of the benefits of the invention is that the power supply capacity of a power supply can be rapidly judged and a power supply capacity index can be generated by different loads, so that an electronic device with the power supply capacity judging device can judge whether the electronic device can be started or not according to the power supply capacity index, or further execute different operations according to different power supply capacity indexes. Compared with the related art, the power supply capability judging device can realize power supply capability judgment and device under the condition of no side effect or lower side effect.
The foregoing description is only of the preferred embodiments of the invention, and all equivalent changes and modifications made in the claims of the present application shall fall within the scope of the invention.
Claims (10)
1. A power capability determining apparatus for determining a power capability of a power source, the power capability determining apparatus comprising:
a connector for receiving the power supply to output an input voltage at a power supply output terminal;
a load circuit including at least one load;
the switching circuit is electrically connected between the load circuit and the power supply output end, wherein the switching circuit comprises at least one switch;
the voltage monitoring circuit is electrically connected to the power supply output end and is used for monitoring the input voltage to generate a monitoring voltage value; and
the processing circuit is electrically connected with the voltage monitoring circuit and the switching circuit and used for controlling the switching circuit, receiving the monitoring voltage value and judging the power supply capacity of the power supply according to the monitoring voltage value under the control of the switching circuit by the processing circuit.
2. The power capability determining apparatus of claim 1, wherein the connector is a universal serial bus (Universal Serial Bus, USB) connector or a high definition multimedia interface (High Definition Multimedia Interface, HDMI) connector.
3. The power capability determining apparatus of claim 1, wherein the processing circuit is further configured to compare the monitored voltage value to a threshold value to determine the power capability of the power source.
4. The power capability determination apparatus of claim 3, wherein the at least one load comprises a first load; the at least one switch comprises a first switch, and the first switch is electrically connected between the first load and the power supply output end; and
in response to the processing circuit opening the first switch, electrically connecting the power output to the first load and determining that the monitored voltage value is not greater than the threshold, the processing circuit generates a power capability index indicating the power capability of the power source.
5. The power capability determination apparatus of claim 4, wherein,
the at least one load also includes a second load different from the first load;
the at least one switch further comprises a second switch, and the second switch is electrically connected between the second load and the power output end; and
and responding to the processing circuit to open the second switch, enabling the power supply output end to be electrically connected to the second load, judging that the monitoring voltage value is larger than the threshold value, and closing the second switch and opening the first switch by the processing circuit.
6. The power capability determination apparatus of claim 4, wherein the processing circuit opens the first switch in response to the processing circuit turning off the switching circuit, disabling the power output from being electrically connected to the load circuit, and determining that the monitored voltage value is greater than the threshold value.
7. The power capability determining apparatus of claim 3, wherein in response to the processing circuit turning off the switching circuit, the power output is not electrically connected to the load circuit and the monitored voltage value is determined to be not greater than the threshold, the processing circuit generates a damage power capability index indicating the power capability of the power source.
8. The power capability determination apparatus of claim 3, wherein the threshold is 4.75 volts.
9. An electronic device comprising the power capability judging device of any one of claims 1-8, wherein the electronic device is further configured to process an input signal and set a processing mode of the input signal according to the power capability of the power.
10. A power capability determining method for determining a power capability of a power source, the power capability determining method comprising:
receiving the power supply to output an input voltage at a power supply output end;
monitoring the input voltage to generate a monitored voltage value;
electrically connecting a switching circuit between the power supply output terminal and a load circuit, wherein the load circuit comprises at least one load, and the switching circuit comprises at least one switch;
controlling the switching circuit; and
the switching circuit is controlled to receive the monitored voltage value and determine the power supply capability of the power supply according to the monitored voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210004754.9A CN116413525A (en) | 2022-01-05 | 2022-01-05 | Power supply capability judging device, electronic device and power supply capability judging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210004754.9A CN116413525A (en) | 2022-01-05 | 2022-01-05 | Power supply capability judging device, electronic device and power supply capability judging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116413525A true CN116413525A (en) | 2023-07-11 |
Family
ID=87050235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210004754.9A Pending CN116413525A (en) | 2022-01-05 | 2022-01-05 | Power supply capability judging device, electronic device and power supply capability judging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116413525A (en) |
-
2022
- 2022-01-05 CN CN202210004754.9A patent/CN116413525A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11749954B2 (en) | Semiconductor USB device for detecting foreign substances and method of operating the same | |
| US9800930B2 (en) | Image processing apparatus and method for selective power supply | |
| CN100437463C (en) | Display system and control method thereof | |
| EP2945369B1 (en) | Hdmi interface unit and multimedia terminal | |
| JP5697764B2 (en) | Audio video signal transmission interface apparatus and method | |
| CN106354245B (en) | Receiving device and power supply method | |
| US20090150589A1 (en) | Hot-plug signal output apparatus and hot-plug signal input/output apparatus | |
| US6920569B1 (en) | Device configured as stand-alone or slave based on detection of power supply in a powered data bus system | |
| US20130113275A1 (en) | Switching of conductor pair in power over ethernet system | |
| CN201118817Y (en) | Thermal plug interface circuit and TV with circuit | |
| US20150124172A1 (en) | Image display apparatus and method of controlling image display apparatus | |
| US10466757B2 (en) | Methods and apparatus for safe negotiation of high current for active cable assemblies | |
| JP2009060204A (en) | Device used in common as source and sink | |
| TWI453726B (en) | Driving stage and related driving method | |
| KR20080063065A (en) | Power monitoring and control apparatus for display device | |
| US20120217823A1 (en) | Display device and power-supply necessity determination method of branch device connected to display device | |
| CN102148951A (en) | Transmitter for automatically detecting power-down of transmitter and system including the same | |
| CN116413525A (en) | Power supply capability judging device, electronic device and power supply capability judging method | |
| US20160087807A1 (en) | Network port and ethernet device integrating powered device and power sourcing equivalent in a port | |
| CA2881352C (en) | Power for an hdmi source device | |
| TWI813116B (en) | Power capability identification device, electronic device and power capability identification method | |
| JP2006324997A (en) | Video system | |
| CN107333073A (en) | A kind of external image information source interface circuit of anti-deadlock | |
| KR20090030524A (en) | Electronic device and method for removing static electricity | |
| KR101677184B1 (en) | Signal processing apparatus and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |