System and method for wireless charging of a device

Abstract

A charging system is disclosed. The charging system includes a plurality of charging circuits to simultaneously charge a chargeable device in proximity to the charging system. The charging circuit establishes wireless communication associated with charging of the chargeable device. Due to simultaneous wireless communications, crosstalk interference results in an error in at least one of the wireless communications. Upon detection of the error, the corresponding charging circuit generates a delay value. After a time delay based on the delay value, the charging circuit reconstructs the wireless communication with the chargeable device, thereby mitigating the crosstalk interference. The charging circuit charges the chargeable device after successful reconstruction of the wireless communication.

Description

Technical Field

[0001] This disclosure generally relates to charging, and more specifically, to systems and methods for wireless charging of devices. Background Technology

[0002] Near Field Communication (NFC) is a short-range wireless technology capable of exchanging data and / or power over a distance of a few centimeters. NFC is commonly used in contactless payment systems, data transfer, and more. One of the more recent applications of NFC is wireless charging. NFC-enabled wireless chargers typically include multiple charging circuits that initiate a charging process to charge nearby devices. When charging circuits are charging devices simultaneously, the charging of a device may be affected by cross-channel interference. Additionally, charging of one or more devices may stop. Summary of the Invention

[0003] According to a first aspect of the present invention, a wireless charging system is provided, comprising:

[0004] The charging circuit is configured as follows:

[0005] Establish wireless communication with a rechargeable device, wherein the wireless communication is associated with charging the rechargeable device;

[0006] Detecting errors in the wireless communication;

[0007] A delay value is generated based on the error detected in the wireless communication; and

[0008] The wireless communication with the rechargeable device is reconstructed after a time delay, wherein the time delay is based on the delay value.

[0009] In one or more embodiments, the charging circuit further includes an error counter, and wherein, upon detecting the error in the wireless communication, the charging circuit is further configured to increment the count of the error counter.

[0010] In one or more embodiments, the charging circuit is further configured to:

[0011] The count of the error counter is compared with a threshold; and

[0012] The error counter count is determined based on the comparison to determine whether it is below the threshold.

[0013] In one or more embodiments, the charging circuit generates the delay value based on determining that the count of the error counter is less than or equal to the threshold.

[0014] In one or more embodiments, the charging circuit is further configured to restart based on the determination that the count of the error counter exceeds the threshold.

[0015] In one or more embodiments, the charging circuit is further configured to reset the error counter after a restart.

[0016] In one or more embodiments, based on the successful reconstruction of the wireless communication, the charging circuit is further configured to charge the rechargeable device.

[0017] In one or more embodiments, in order to establish the wireless communication, the charging circuit is further configured to:

[0018] Generate one or more setup requests; and

[0019] Send the one or more setup requests to the rechargeable device.

[0020] In one or more embodiments, the charging circuit is further configured to wait for one or more setting responses from the rechargeable device for a period of time based on the transmission of the one or more setting requests, and wherein the charging circuit detects the error in the wireless communication based on the failure to receive the one or more setting responses at the end of the period of time.

[0021] In one or more embodiments, the charging circuit is further configured to:

[0022] Receive from the rechargeable device one or more sent setting responses in response to the one or more setting requests; and

[0023] Initiate decoding of the response to the one or more settings.

[0024] In one or more embodiments, the error detected in the wireless communication indicates an error in decoding the one or more setting responses.

[0025] In one or more embodiments, the charging circuit includes a random number generator, wherein the random number generator is configured to generate the delay value.

[0026] In one or more embodiments, the charging circuit is further configured to determine the time delay based on the duration associated with the reconstruction of the wireless communication.

[0027] In one or more embodiments, the delay value is randomly generated.

[0028] In one or more embodiments, the wireless charging system further includes a set of charging circuits configured to control charging of a corresponding set of rechargeable devices based on a set of delay values, the delay values ​​being different from the set of delay values.

[0029] In one or more embodiments, the wireless charging system may additionally include a clock generator coupled to the charging circuit and the charging circuit assembly, the clock generator being further configured to:

[0030] Generate clock signal; and

[0031] The clock signal is provided to each of the charging circuits and the set of charging circuits, wherein each of the charging circuits and the set of charging circuits is synchronized based on the clock signal.

[0032] In one or more embodiments, the error indicates crosstalk interference from at least one charging circuit in the set of charging circuits in the wireless communication.

[0033] In one or more embodiments, the wireless communication is near-field communication.

[0034] According to a second aspect of the present invention, a wireless charging method is provided, comprising:

[0035] Wireless communication with a rechargeable device is established by a charging circuit, wherein the wireless communication is associated with charging of the rechargeable device;

[0036] Errors in the wireless communication are detected by the charging circuit.

[0037] The charging circuit generates a delay value based on the error detected in the wireless communication; and

[0038] The wireless communication with the rechargeable device is reconstructed by the charging circuit after a time delay, wherein the time delay is based on the delay value.

[0039] In one or more embodiments, the wireless charging method further includes:

[0040] After detecting the error in the wireless communication, the charging circuit increments the error counter of the charging circuit.

[0041] The charging circuit compares the count of the error counter with a threshold; and

[0042] The charging circuit determines whether the count of the error counter is lower than the threshold based on the comparison, wherein the charging circuit generates the delay value based on determining that the count of the error counter is less than or equal to the threshold, and wherein the delay value is randomly generated.

[0043] These and other aspects of the invention will become apparent from the embodiments described below, and will be illustrated with reference to these embodiments. Attached Figure Description

[0044] The following detailed description of embodiments of the present disclosure will be better understood when read in conjunction with the accompanying drawings. This disclosure is by way of illustration and is not limited to the drawings, in which similar reference numerals indicate similar elements.

[0045] Figure 1 A schematic diagram of a charging environment according to an embodiment of the present disclosure is shown;

[0046] Figure 2 Embodiments according to this disclosure are shown Figure 1 A schematic block diagram of the charging circuit in the charging environment;

[0047] Figures 3A-3C This illustrates an embodiment of the present disclosure. Figure 1 A timing diagram of an exemplary scenario in which rechargeable devices in a charging environment are simultaneously charging; and

[0048] Figures 4A-4C A common flowchart illustrating an embodiment of the present disclosure. Figure 1 The wireless charging method is implemented by the charging circuit in the charging environment. Detailed Implementation

[0049] The detailed description of the accompanying drawings is intended to illustrate embodiments of the present disclosure and is not intended to represent the only form in which the present disclosure may be practiced. It should be understood that the same or equivalent functionality may be achieved through different embodiments intended to be covered within the spirit and scope of the present disclosure.

[0050] Overview :

[0051] Near Field Communication (NFC) wireless chargers typically include multiple charging circuits that simultaneously charge rechargeable devices that are near the charging circuits. To charge a device, the charging circuits of an NFC charger can establish wireless communication with the device. During wireless communication, the charging circuits can request device information associated with charging. The device can provide this information in response. Because multiple wireless communications are established simultaneously between the charging circuits and the device, these communications can be affected by crosstalk. Therefore, the efficiency of charging the device is compromised.

[0052] Conventional error recovery mechanisms from crosstalk involve re-initiating the charging process after a static (e.g., fixed) duration. However, even after re-initiating the charging process after a fixed duration, wireless communication may still be affected by crosstalk, leading to poor or failed charging of the device.

[0053] Optimal methods for simultaneously charging the device may include adequately spacing each charging circuit or separating each charging circuit using physical shielding to reduce interference that could affect wireless communication. However, these solutions may be difficult to implement due to space and cost constraints.

[0054] Other methods to reduce the impact of crosstalk interference may include managing the timing of wireless communication between each charging circuit and its corresponding device through the control circuitry of the wireless charger. The timing of wireless communication can be managed by synchronizing the wireless communication between the charging circuit and its corresponding device. However, to synchronize the timing of each wireless communication, each charging circuit may have to be physically connected to the control circuitry, thereby increasing the cost of the wireless charger. Alternatively, the impact of crosstalk interference can be mitigated by charging the devices one at a time. However, such techniques increase the total duration of the charging process for all devices, and therefore cause inconvenience to the user associated with the device.

[0055] Various embodiments of this disclosure disclose a charging system (e.g., a wireless charger). The charging system may include an assembly of charging circuits that can charge a set of corresponding rechargeable devices by establishing wireless communication with those devices. The charging circuits may detect errors in at least one wireless communication based on crosstalk interference that may occur due to simultaneous wireless communication. A delay value (e.g., a random value) may be generated by the corresponding charging circuit based on the errors detected in the wireless communication. After a time delay based on the delay value, the charging circuit may reconstruct the wireless communication with the rechargeable devices. The charging circuit may charge the rechargeable devices based on the successful reconstruction of the wireless communication.

[0056] Therefore, this disclosure significantly reduces the error probability caused by crosstalk interference in the wireless communication between the charging circuit and the rechargeable device by reconstructing the wireless communication between one or more charging circuits and the corresponding rechargeable device based on random delay timing. The charging system avoids including any additional hardware to physically shield the charging circuit, thereby avoiding any increase in hardware costs. Furthermore, since the charging circuit can charge the rechargeable device simultaneously, the overall charging efficiency of the charging system of this disclosure is improved compared to conventional techniques that suggest charging each device one at a time or managing the charging timing of each device.

[0057] Figure 1A schematic diagram of a charging environment 100 according to an embodiment of the present disclosure is shown. The charging environment 100 may include a charging system 102 and a plurality of rechargeable devices 104. The charging system 102 may include a plurality of charging circuits 103. The plurality of charging circuits 103 are shown including a first charging circuit 103a and a second charging circuit 103b. Furthermore, the plurality of rechargeable devices 104 are shown including a first rechargeable device 104a and a second rechargeable device 104b. In one embodiment, the charging environment 100 may be a Near Field Communication (NFC) charging environment. NFC is a short-range wireless technology capable of exchanging data and / or power between NFC devices over a distance of a few centimeters.

[0058] When a rechargeable device is within proximity of the corresponding charging circuit of the charging system 102, the charging environment 100 can wirelessly charge at least one of the multiple rechargeable devices 104 via one of the multiple charging circuits 103. The proximity can be a predetermined area such that the charging circuit can detect the presence of the rechargeable device within the proximity. In an exemplary embodiment, the predetermined area can be 9 square centimeters (cm²). 2 Furthermore, the predetermined area can be defined based on the communication range of NFC.

[0059] Multiple charging circuits 103 :

[0060] Each of the plurality of charging circuits 103 can be configured to control the charging process of the corresponding rechargeable device based on the proximity between the rechargeable device and the charging circuit. The charging process may correspond to (i) wireless communication between the charging circuit and the corresponding rechargeable device, such as the exchange of requests and responses associated with charging the rechargeable device, and (ii) wireless charging of the rechargeable device by the charging circuit. In one scenario, the charging process of the rechargeable device may also be controlled based on prior detection of the rechargeable device by one of the charging circuits 103 relative to the other charging circuits 103. In another scenario, the charging process of the corresponding rechargeable device may be controlled additionally based on the establishment of wireless communication between one of the charging circuits 103 and the rechargeable device before the other charging circuits 103. In yet another scenario, one of the charging circuits 103 may randomly establish wireless communication with the rechargeable devices among the plurality of rechargeable devices 104.

[0061] The duration associated with wireless communication may be shorter than the duration of wireless charging of the rechargeable device. In an example, the duration for wireless communication may be 20%, and the duration for wireless charging of the rechargeable device may be 80%. Both wireless communication and wireless charging may be based on NFC. In an example, each of the plurality of charging circuits 103 may be a poller configured to generate poller command signals, and each of the rechargeable devices 104 may be a listener regarding charging operations and may be configured to decode the poller command signals and provide a response.

[0062] The charging system 102 may further include a plurality of transceivers 108, a clock generator 110, and a first power supply 112. Each of the plurality of charging circuits 103 may be coupled to a corresponding transceiver among the clock generator 110, the first power supply 112, and the plurality of transceivers 108. The plurality of transceivers 108 is shown as including a first transceiver 108a and a second transceiver 108b. A first charging circuit 103a may be coupled to the first transceiver 108a, and a second charging circuit 103b may be coupled to the second transceiver 108b. In one or more embodiments, the plurality of transceivers 108 may be implemented as inductors. Each inductor may be configured to selectively generate a magnetic field to transmit power and data to the inductor of the corresponding rechargeable device.

[0063] although Figure 1 The charging system 102 shown includes two charging circuits (e.g., a first charging circuit 103a and a second charging circuit 103b), but the scope of this disclosure is not limited thereto. In one or more embodiments, the charging system 102 may include more than two charging circuits without departing from the scope of this disclosure.

[0064] although Figure 1 The charging environment 100 shown includes two rechargeable devices (e.g., a first rechargeable device 104a and a second rechargeable device 104b), but the scope of this disclosure is not limited thereto. In one or more embodiments, the charging environment 100 may include more than two rechargeable devices without departing from the scope of this disclosure.

[0065] For simplicity, the operation of the first charging circuit 103a will be explained in detail in the ongoing description. Since the operation of the remaining plurality of charging circuits 103 (such a collection of charging circuits, for example, the second charging circuit 103b) is similar to that of the first charging circuit 103a, those skilled in the art will understand the operation of the remaining plurality of charging circuits 103.

[0066] First charging circuit 103a :

[0067] The first charging circuit 103a may include a suitable circuitry configured to perform one or more operations. For example, the first charging circuit 103a may be configured to establish a first wireless communication with the first rechargeable device 104a that is associated with charging the first rechargeable device 104a. The first charging circuit 103a may establish the first wireless communication when it detects that the first rechargeable device 104a is within proximity of the charging system 102 (e.g., charging circuit 103a). The first charging circuit 103a may be coupled to a clock generator 110, a first power supply 112, and a first transceiver 108a.

[0068] To establish a first wireless communication with the first rechargeable device 104a, the first charging circuit 103a may be additionally configured to generate one or more first setup requests F1-FN. The one or more first setup requests F1-FN may include queries and requests associated with charging of the first rechargeable device 104a. For example, the one or more first setup requests F1-FN may include a first setup request F1, a second setup request F2, and a third setup request F3. A first setup request F1 may include a query to receive authentication data to authenticate the first rechargeable device 104a. A second setup request F2 may include a query to receive information indicating the amount of charge required by the first rechargeable device 104a. Furthermore, a third setup request F3 may request data associated with power delivery limitations (e.g., voltage and current limits) of the first rechargeable device 104a to ensure compatibility and safety of the first rechargeable device 104a during charging.

[0069] The first charging circuit 103a may be further configured to send one or more first setup requests F1-FN to the first rechargeable device 104a via the first transceiver 108a. After sending one or more first setup requests F1-FN to the first rechargeable device 104a, the first rechargeable device 104a may be further configured to wait for the reception of one or more first setup responses FR1-FRN from the first rechargeable device 104a until the end of a first time period. The duration of the first time period may be determined based on the NFC communication standard. The one or more first setup responses FR1-FRN may include a set of responses based on queries and requests included in the one or more first setup requests F1-FN. For example, the one or more first setup responses FR1-FRN may include a first setup response FR1, a second setup response FR2, and a third setup response FR3. The first setting response FR1 may include information based on the first setting request F1 (e.g., the first setting response FR1 may provide certification data that may include the model of the first rechargeable device 104a), the second setting response FR2 may include a value associated with the amount of charge required by the first rechargeable device 104a, and the third setting response FR3 may include power delivery and current limits associated with the charging of the first rechargeable device 104a.

[0070] In one or more embodiments, the failure of the first charging circuit 103a to receive one or more first setup responses FR1-FRN at the end of a first time period may indicate an error in the first wireless communication. The failure may be attributed to interference, such as crosstalk, electromagnetic interference, other sources of interference, or any combination thereof. Crosstalk may occur when at least two charging circuits simultaneously establish wireless communication with their respective rechargeable devices. In one scenario, crosstalk may occur while one or more first setup responses FR1-FRN are being transmitted from the first rechargeable device 104a to the first charging circuit 103a. Crosstalk may affect the quality of one or more first setup requests F1-FN, causing the first rechargeable device 104a to be unable to decode one or more first setup requests F1-FN to generate one or more first setup responses FR1-FRN. Consequently, the first charging circuit 103a may fail to receive one or more first setup responses FR1-FRN at the end of the first time period, resulting in the loss of one or more first setup responses FR1-FRN.

[0071] In one or more embodiments, the first charging circuit 103a may be additionally configured to receive one or more first setting responses FR1-FRNs during a first time period. Therefore, the first charging circuit 103a may be additionally configured to initiate decoding of the one or more first setting responses FR1-FRNs. In examples, decoding may be performed by an algorithm that may include performing one or more mathematical operations, such as addition and bitwise operations, on the one or more first setting responses FR1-FRNs. The algorithm may be based on the type of decoding standard followed by decoding the one or more first setting responses FR1-FRNs. Examples of decoding standards that can be used in Wi-Fi and RFID technologies may include Quadrature Amplitude Modulation (QAM) decoding and Phase Shift Keying (PSK) decoding.

[0072] In one scenario, after initiating decoding of one or more first setting responses FR1-FRNs, the first charging circuit 103a may fail to decode the one or more first setting responses FR1-FRNs. Therefore, the first charging circuit 103a may be additionally configured to detect errors in the first wireless communication. In another scenario, after initiating decoding of one or more first setting responses FR1-FRNs, the first charging circuit 103a may inaccurately decode the one or more first setting responses FR1-FRNs. Decoding inaccuracies may occur due to corruption of one or more first setting responses FR1-FRNs. One or more first setting responses FR1-FRNs may be corrupted due to one of the errors that may occur during the reception of one or more first setting responses FR1-FRNs, such as collision errors, framing errors, incomplete byte errors, etc. The first charging circuit 103a may therefore be additionally configured to detect errors in the first wireless communication. The first charging circuit 103a may additionally identify errors that may indicate crosstalk interference from at least one of the plurality of charging circuits 103 (e.g., the second charging circuit 103b) in the first wireless communication, such as Figure 2 The explanation is as follows.

[0073] In another exemplary scenario, the first rechargeable device 104a may inaccurately decode one or more first setup requests F1-FNs and generate one or more first setup responses FR1-FRNs with inaccurate data due to crosstalk interference during the transmission of one or more first setup requests F1-FNs. After receiving one or more first setup responses FR1-FRNs with inaccurate data within a first time period, the first charging circuit 103a may fail to decode or inaccurately decode one or more first setup responses FR1-FRNs. Therefore, the first charging circuit 103a can detect errors in the first wireless communication.

[0074] The first charging circuit 103a may be further configured to increment a first error counter of the first charging circuit 103a after an error is detected in the first wireless communication. The counting of the first error counter (e.g.) Figure 2 The number shown (as illustrated) can indicate the frequency at which errors are detected in the first wireless communication. For example, the count could be two. Therefore, the first charging circuit 103a may have detected an error twice in the first wireless communication. Double detection of the error can indicate that the first wireless communication with the first rechargeable device 104a has been established twice (e.g., the previous establishment and the current establishment). The first charging circuit 103a can also be configured to compare the count with a threshold TV. The threshold TV can indicate the total number of attempts by the first charging circuit 103a to reconstruct the first wireless communication is acceptable. Furthermore, the first charging circuit 103a can restart when the count exceeds the total number of attempts.

[0075] In one or more embodiments, the threshold TV may be defined based on the type of rechargeable device (e.g., first rechargeable device 104a) that can be identified at the initial establishment of the first wireless communication. For example, the threshold TV for an earphone that is the first rechargeable device 104a may be lower than the threshold TV for a hearing aid that is the first rechargeable device 104a. Therefore, the total number of acceptable attempts for the earphone (e.g., threshold TV) may be three, while the total number of acceptable attempts for the hearing aid (e.g., threshold TV) may be five. In one or more embodiments, the threshold TV may be randomly defined. The threshold TV may be defined by the threshold configuration circuitry of the first charging circuitry 103a, such as... Figure 2 As explained in the diagram.

[0076] The first charging circuit 103a may be further configured to compare the count of the first error counter with a threshold TV and determine whether the count is lower than the threshold TV. In one or more embodiments, the first charging circuit 103a may generate a first delay value FD after determining that the count is less than or equal to the threshold TV. The first delay value FD may be a random value. In examples, the first delay value FD may be an integer value, a binary value, a hexadecimal value, etc. Figure 2 The generation of the first delay value FD is explained below. During the generation of the first delay value FD, the first charging circuit 103a may be additionally configured to transmit a carrier signal to communicate with a corresponding rechargeable device among the plurality of rechargeable devices 104a. The first carrier signal may additionally ensure that the first wireless communication is active between the first charging circuit 103a and the first rechargeable device 104a.

[0077] The first charging circuit 103a may be further configured to determine the first time delay (in) based on the first delay value FD and the first charging circuit 103a performing one or more tasks to reconstruct the duration that the first wireless communication may require. Figure 3A (as shown in the diagram). The task may include executing one or more codes associated with the reconstruction of the first wireless communication.

[0078] In one or more embodiments, the duration may be defined based on the type of rechargeable device (e.g., first rechargeable device 104a) that can be identified at the initial establishment of the first wireless communication. For example, the duration of an earphone as the first rechargeable device 104a may be shorter than the duration of a hearing aid as the first rechargeable device 104a. Thus, the duration of the earphone may be 3 seconds, while the duration of the hearing aid may be 5 seconds. In another embodiment, the duration may be randomly defined.

[0079] The first time delay can be a multiple of the duration based on a first delay value FD. For example, when the duration is 5 seconds and the first delay value FD is 2, the first time delay can be 10 seconds. In one or more embodiments, a fixed time delay can be multiplied by the first delay value FD to produce the first time delay.

[0080] The first charging circuit 103a may be further configured to re-establish the first wireless communication with the first rechargeable device 104a after a first time delay. In one embodiment, the first charging circuit 103a may be configured to charge the first rechargeable device 104a based on the successful reconstruction of the first wireless communication. Since the reconstruction of the first wireless communication occurs after the first time delay (which may be a random time delay), the probability of crosstalk interference caused by at least one of the remaining charging circuits in the plurality of charging circuits 103 establishing simultaneous wireless communication is reduced. The error probability (p) of the crosstalk interference detected by the first charging circuit 103a in the first wireless communication can be determined by equation (1):

[0081]

[0082] T1 can indicate the time period of the first wireless communication.

[0083] PD can indicate the duration associated with the reconstruction of the first wireless communication, and

[0084] N can indicate the first delay value FD generated by the first charging circuit 103a after an error is detected.

[0085] Therefore, based on the first delay value FD, the error probability is reduced by further increasing the range of the first delay value FD that can be generated by the first charging circuit 103a. In this example, T1 is equal to the duration. Furthermore, N (e.g., the first delay value FD) can be an integer between 1 and 5. Therefore, the error probability (p) can be... Furthermore, the error probability (p) is further reduced when N (e.g., the first delay value FD) can be an integer between 1 and 10.

[0086] To reconstruct the first wireless communication, the first charging circuit 103a may generate and send one or more first setup requests F1-FN. In one scenario, the first charging circuit 103a may regenerate one or more first setup requests F1-FN. In another scenario, one or more first setup requests F1-FN may be generated based on the previous establishment of the first wireless communication (e.g., one or more first setup requests F1-FN sent during the previous establishment of the first wireless communication). In this example, an error may occur in the transmission of the second setup request F2 during the establishment of the first wireless communication. Therefore, compared to regenerating the first setup request F1, the first charging circuit 103a may generate and send the second setup request F2 during reconstruction because the received response to the first setup request F1 can be stored in the memory of the first charging circuit 103a. Figure 2 (As shown in the diagram). In another scenario, the first charging circuit 103a may send the second setting request F2 after a time delay following the sending of the first setting request F1. Furthermore, the second request F2 may be sent after receiving a first setting response FR1 to the first setting request F1. In one or more embodiments, the time delay may be a predetermined time period based on the NFC communication standard, wherein the first charging circuit 103a may send the remaining setting requests of one or more first setting requests F1-FN after receiving a response to a previous setting request of one or more first setting requests F1-FN. The sending of the second setting request F2 may be delayed by the time delay to ensure the stability of the first wireless communication.

[0087] In one or more embodiments, the first charging circuit 103a may be further configured to receive one or more first setting responses FR1-FRN from the first rechargeable device 104a in response to sending one or more first setting requests F1-FN within a first time period when reconstructing the first wireless communication. After successfully decoding one or more first setting responses FR1-FRN, the first charging circuit 103a may charge the first rechargeable device 104a. Successful decoding of one or more first setting responses FR1-FRN by the first charging circuit 103a may indicate that the first wireless communication was successful.

[0088] For simplicity, it is assumed that the reconstruction of the first wireless communication is successful after the establishment of the first wireless communication fails. In the scenario where the reconstruction of the first wireless communication fails, those skilled in the art will understand that the first charging circuit 103a can repeatedly reconstruct the first wireless communication. Each time the first charging circuit 103a attempts to reconstruct the first wireless communication, the first charging circuit 103a increments a first error counter. The number of reconstructions of the first wireless communication can be based on the count of the first error counter, and continues until the reconstruction of the first wireless communication is successful.

[0089] In another embodiment, when the count of the first error counter is determined to exceed a threshold TV, the first charging circuit 103a may be additionally configured to restart. The first charging circuit 103a may also be additionally configured to reset the count of the first error counter to a default value. Based on the default value, the attempt by the first charging circuit 103a to rebuild the first wireless communication due to an error can be determined by subtracting the count of the first error counter with the default value. For example, when the default value is one and the first error counter is three, the attempt by the first charging circuit 103a to rebuild the first wireless communication is two.

[0090] Although the discussion above addressed faults in the first wireless communication regarding crosstalk interference, it should be understood that faults can be attributed to any type of interference. For example, faults can be based on environmental interference, electromagnetic interference, other sources of interference, or any combination thereof.

[0091] In another embodiment, the first charging circuit 103a may establish one or more wireless communications with the first rechargeable device 104a during charging to ensure a smooth charging process for the first rechargeable device 104a. The requests and responses exchanged in the one or more wireless communications may be similar to those in the first wireless communication.

[0092] Second charging circuit 103b :

[0093] The second charging circuit 103b may be structurally and functionally similar to the first charging circuit 103a. The second charging circuit 103b may be coupled to a clock generator 110, a first power supply 112, and a second transceiver 108b. The second charging circuit 103b may include a suitable circuitry configured to perform one or more operations. For example, the second charging circuit 103b may be associated with a set of charging circuits configured to control the charging of a corresponding set of rechargeable devices (e.g., the second rechargeable device 104b) based on a set of delay values ​​(e.g., a second delay value SD). The second charging circuit 103b may be configured to establish a second wireless communication with the second rechargeable device 104b. The second charging circuit 103b may establish the second wireless communication when it detects that the second rechargeable device 104b is within proximity to the charging system 102 (e.g., the second charging circuit 103b).

[0094] To establish a second wireless communication with the second rechargeable device 104b, the second charging circuit 103b may be additionally configured to generate one or more second setup requests S1-SN. The one or more second setup requests S1-SN may be similar to one or more first setup requests F1-FN. The second charging circuit 103b may be additionally configured to send the one or more second setup requests S1-SN to the second rechargeable device 104b via the second transceiver 108b. The second charging circuit 103b may be additionally configured to receive one or more second setup responses SR1-SRN from the second rechargeable device 104b in response to sending the one or more second setup requests S1-SN via the second transceiver 108b. The one or more second setup responses SR1-SRN may include a set of responses based on queries included in the one or more second setup requests S1-SN.

[0095] The second charging circuit 103b may be further configured to initiate the decoding of one or more second setting responses SR1-SRN by performing an algorithm on one or more second setting responses SR1-SRN. The second charging circuit 103b may decode the one or more second setting responses SR1-SRN in a manner similar to that of the first charging circuit 103a. The second charging circuit 103b may also be further configured to detect errors in the second wireless communication, which may indicate crosstalk interference from at least one of the remaining charging circuits of the plurality of charging circuits 103. For simplicity, it is assumed that the error may occur due to crosstalk interference from the first charging circuit 103a; however, as previously indicated, the error can be attributed to interference from any number of sources. Additionally, it is assumed that the received second setting response SR1-SRN is affected by crosstalk interference. The detection of errors in the second wireless communication may be similar to the detection of errors in the first wireless communication.

[0096] The second charging circuit 103b may be further configured to increment the count of a second error counter after detecting an error in the second wireless communication. The second charging circuit 103b may also be further configured to compare the count of the second error counter with a threshold TV. The second charging circuit 103b may further be configured to determine whether the count of the second error counter is lower than the threshold TV based on the comparison between the second error counter and the threshold TV. The second charging circuit 103b may further be configured to generate a second delay value SD in the delay value set after determining whether the count of the second error counter is less than or equal to the threshold TV. The second delay value SD may be different from the first delay value FD. For example, the second delay value SD may be less than or greater than the first delay value FD. Therefore, both the first wireless communication and the second wireless communication can be reconstructed by the first charging circuit 103a and the second charging circuit 103b at different times, thereby mitigating the effects of crosstalk interference.

[0097] The second charging circuit 103b may be further configured to determine a second time delay based on a second delay value SD and the duration for which the second charging circuit 103b performs one or more tasks to reconstruct the second wireless communication. The duration for which the second charging circuit 103b may need may be the same as the duration for which the first charging circuit 103a may need. The second time delay may be a multiple of the duration based on the second delay value SD. Based on the first delay value FD... Figure 2 (as shown in the diagram) and a second delay value SD, the first time delay and the second time delay may be different. For example, the duration required for the first charging circuit 103a and the second charging circuit 103b may be 5 seconds. When the first delay value FD may be 2 and the second delay value SD may be 3 seconds, the time delay can be determined by multiplying the determined delay value by the duration (for example, the first time delay may be 10 seconds and the second time delay may be 15 seconds).

[0098] The second charging circuit 103b may be further configured to re-establish the second wireless communication with the second rechargeable device 104b via the second transceiver 108b. In an embodiment, the second charging circuit 103b may be further configured to wait for a second time period (SR1-SRN) based on the transmission of one or more second setting requests (S1-SN). The second time period may be similar to the first time period. The second charging circuit 103b may be configured to charge the second rechargeable device 104b based on the successful re-establishment of the second wireless communication. In another embodiment, the second charging circuit 103b may be further configured to restart and reset the second error counter when the count of the second error counter may exceed a threshold (TV). The second wireless communication may be established after the restart.

[0099] Although it is mentioned that the first charging circuit 103a can control the charging process of the first rechargeable device 104a and the second charging circuit 103b can control the charging process of the second rechargeable device 104b, the scope of this disclosure is not limited thereto. In another embodiment, the first charging circuit 103a can control the charging process of the second rechargeable device 104b, and the second charging circuit 103b can control the charging process of the first rechargeable device 104a.

[0100] First transceiver 108a :

[0101] A first transceiver 108a may be coupled to a first charging circuit 103a. The first transceiver 108a may include a suitable circuitry configured to perform one or more operations. For example, the first transceiver 108a may be configured to receive one or more first setup requests F1-FN from the first charging circuit 103a. The first transceiver 108a may also be configured to send one or more first setup requests F1-FN to a first rechargeable device 104a to establish a first wireless communication. The first transceiver 108a may also be configured to receive one or more first setup responses FR1-FRN from the first rechargeable device 104a based on one or more first setup requests F1-FN and to provide one or more first setup responses FR1-FRN to the first charging circuit 103a. In one or more embodiments, the first transceiver 108a may include an inductor configured to deliver power and data to a corresponding inductor of the first rechargeable device 104a. Examples of the first transceiver 108a may include a radio frequency (RF) transceiver, a wireless transceiver, etc.

[0102] Second transceiver 108b :

[0103] The second transceiver 108b may be structurally and functionally similar to the first transceiver 108a. The second transceiver 108b may be coupled to the second charging circuit 103b. The second transceiver 108b may include a suitable circuitry configured to perform one or more operations. For example, the second transceiver 108b may be configured to receive one or more second setting requests S1-SN from the second charging circuit 103b. The second transceiver 108b may also be configured to transmit one or more second setting requests S1-SN to the second rechargeable device 104b to establish a second wireless communication. The second transceiver 108b may also be configured to receive one or more second setting responses SR1-SRN from the second rechargeable device 104b based on one or more second setting requests S1-SN and provide one or more second setting responses SR1-SRN to the second charging circuit 103b. Examples of the second transceiver 108b may include a radio frequency (RF) transceiver, a wireless transceiver, etc. In one or more embodiments, the second transceiver 108b may include an inductor configured to deliver power and data to a corresponding inductor of the second rechargeable device 104b.

[0104] although Figure 1 The charging system 102 shown includes two transceivers (e.g., a first transceiver 108a and a second transceiver 108b), but the scope of this disclosure is not limited thereto. In other embodiments, the charging system 102 may include more than two transceivers without departing from the scope of this disclosure. In such scenarios, the number of transceivers is equal to the number of charging circuits required to charge the plurality of rechargeable devices 104.

[0105] Clock Generator 110 :

[0106] Clock generator 110 may be coupled to each of the plurality of charging circuits 103. Clock generator 110 may include a suitable circuit system that can be configured to perform one or more operations. For example, clock generator 110 may be configured to generate a clock signal CS. Clock generator 110 may also be configured to provide clock signal CS to each of the plurality of charging circuits 103. Providing clock signal CS to each of the plurality of charging circuits 103 ensures that the plurality of charging circuits 103 are synchronized with each other during the establishment of corresponding wireless communications. Therefore, intermodulation of carrier signals required for communication between each of the plurality of charging circuits 103 and the corresponding rechargeable device in the plurality of rechargeable devices 104 can be avoided, and the stability of wireless communications with the corresponding rechargeable device can be achieved. Furthermore, the first charging circuit 103a and the second charging circuit 103b may generate one or more first setup requests F1-FN and one or more second set requests S1-SN, respectively, based on clock signal CS. Examples of clock generator 110 may include a crystal oscillator, a voltage-controlled crystal oscillator, a phase-locked loop clock generator, etc.

[0107] First power supply 112 :

[0108] The first power source 112 may be coupled to each of the plurality of charging circuits 103 in the charging system 102. The first power source 112 may also be configured to provide a power supply PS to each of the plurality of charging circuits 103 to charge a corresponding rechargeable device among the plurality of rechargeable devices 104, respectively. Examples of the first power source 112 may include a battery.

[0109] First rechargeable device 104a :

[0110] The first rechargeable device 104a may include a first control circuit 114, a first communication circuit 116, and a second power supply 118. The first rechargeable device 104a may be an NFC-enabled device configured to communicate with the charging system 102 to participate in the charging process. Examples of the first rechargeable device 104a may include smartphones, tablets, laptops, headphones, hearing aids, etc.

[0111] First control circuit 114 :

[0112] A first control circuit 114 may be coupled to a first communication circuit 116 and a second power supply 118. The first control circuit 114 may include a suitable circuitry configured to perform one or more operations. For example, the first control circuit 114 may be configured to receive one or more first setting requests F1-FN from a first charging circuit 103a via the first communication circuit 116. The first control circuit 114 may also be configured to generate one or more first setting responses FR1-FRN based on one or more first setting requests F1-FN. The first control circuit 114 may generate one or more first setting responses FR1-FRN after successfully decoding one or more first setting requests F1-FN. If decoding of one or more first setting responses FR1-FRN fails, the first control circuit 114 may fail to generate one or more first setting responses FR1-FRN. The first control circuit 114 may also be configured to transmit one or more first setting responses FR1-FRN to the first charging circuit 103a via the first communication circuit 116 in a first wireless communication. The first control circuit 114 may be further configured to charge the first rechargeable device 104a (e.g., the second power supply 118) via the first charging circuit 103a. Charging may be based on successful first wireless communication with the first charging circuit 103a. Examples of the first control circuit 114 may be a central processing unit (CPU), a graphics processing unit (GPU), a microcontroller, an application-specific integrated circuit (ASIC), etc.

[0113] First communication circuit 116 :

[0114] A first communication circuit 116 may be coupled to a first control circuit 114. The first communication circuit 116 may include a suitable circuitry configured to perform one or more operations. For example, the first communication circuit 116 may be configured to receive one or more first setting requests F1-FN from a first charging circuit 103a to facilitate the establishment of a first wireless communication with the first charging circuit 103a. The first communication circuit 116 may also be configured to provide one or more first setting requests F1-FN to the first control circuit 114. The first communication circuit 116 may also be configured to receive one or more first setting responses FR1-FRN from the first communication circuit 116. The first communication circuit 116 may also be configured to send one or more first setting responses FR1-FRN to the first charging circuit 103a. During charging of the first rechargeable device 104a, the first communication circuit 116 may also be configured to receive a power supply PS from the first charging circuit 103a via a first transceiver 108a and to supply the power supply PS to a second power source 118. Examples of the first communication circuit 116 may include a radio frequency (RF) transceiver, a wireless transceiver, etc. In one or more embodiments, the first communication circuit 116 may include an inductor that generates an induced voltage (power supply (PS)) in response to an electromagnetic field generated by a corresponding inductor of the first charging circuit 103a, the induced voltage being used to recharge the second power supply 118.

[0115] Second power supply 118 :

[0116] A second power source 118 may be coupled to a first control circuit 114. The second power source 118 may be configured to receive a power supply PS from a first charging circuit 103a via the first control circuit 114. An example of the second power source 118 may be a battery. A first rechargeable device 104a may be configured to store charge based on the power supply PS provided to the second power source 118. In one scenario, when the power level of the second power source 118 may be below a threshold power level, a user possessing the first rechargeable device 104a may approach the charging system 102 to wirelessly charge the first rechargeable device 104a.

[0117] Second rechargeable device 104b :

[0118] The second rechargeable device 104b may include a second control circuit 120, a second communication circuit 122, and a third power supply 124. The second rechargeable device 104b may be an NFC-enabled device to facilitate the charging process performed by the charging system 102. Examples of the second rechargeable device 104b may include smartphones, tablets, laptops, headphones, hearing aids, etc.

[0119] Second control circuit 120 :

[0120] The second control circuit 120 may be coupled to the second communication circuit 122 and the third power supply 124. The second control circuit 120 may include a suitable circuitry configured to perform one or more operations. For example, the second control circuit 120 may be configured to receive one or more second setting requests S1-SN from the second charging circuit 103b via the second communication circuit 122. The second control circuit 120 may also be configured to generate one or more second setting responses SR1-SRN in a manner similar to the first control circuit 114. The second control circuit 120 may also be configured to send one or more second setting responses SR1-SRN to the second charging circuit 103b via the second communication circuit 122. The second control circuit 120 may also be configured to charge the second rechargeable device 104b (e.g., the third power supply 124) via the second charging circuit 103b. Charging may be based on successful second wireless communication with the second charging circuit 103b. Examples of the second control circuit 120 may be a central processing unit (CPU), a graphics processing unit (GPU), a microcontroller, an application-specific integrated circuit (ASIC), etc.

[0121] Second communication circuit 122 :

[0122] The second communication circuit 122 may be coupled to the second control circuit 120. The second communication circuit 122 may include a suitable circuit system configured to perform one or more operations. For example, the second communication circuit 122 may be configured to receive one or more second setting requests S1-SN from the second charging circuit 103b (e.g., the second transceiver 108b) to facilitate the establishment of a second wireless communication with the second charging circuit 103b. The second communication circuit 122 may also be configured to provide one or more second setting requests S1-SN to the second control circuit 120. The second communication circuit 122 may also be configured to receive one or more second setting responses SR1-SRN from the second communication circuit 122. The second communication circuit 122 may also be configured to send one or more second setting responses SR1-SRN to the second charging circuit 103b. The second communication circuit 122 may also be configured to receive a power supply PS from the second charging circuit 103b and provide the power supply PS to the third power source 124 during charging of the second rechargeable device 104b. Examples of the second communication circuit 122 may include a radio frequency (RF) transceiver, a wireless transceiver, etc. In one or more embodiments, the second communication circuit 122 may include an inductor that generates an induced voltage (power supply (PS)) in response to an electromagnetic field generated by a corresponding inductor of the second charging circuit 103b, the induced voltage being used to recharge the third power supply 124.

[0123] Third power supply 124 :

[0124] The third power source 124 may be coupled to the second control circuit 120. The third power source 124 may be configured to receive a power supply PS from the second charging circuit 103b via the second control circuit 120. Examples of the third power source 124 may include a battery. The second rechargeable device 104b may be charged based on the power supply PS provided to the third power source 124.

[0125] Figure 2 A block diagram of a first charging circuit 103a according to an embodiment of the present disclosure is shown. The first charging circuit 103a may include an NFC control circuit 202, a memory 204, a random number generator 206, a threshold configuration circuit 208, and a first error counter 210. The NFC control circuit 202, the random number generator 206, the threshold configuration circuit 208, and the first error counter 210 may interact with each other via a communication channel 212. Examples of the communication channel 212 may include a Serial Peripheral Interface (SPI), an Interconnect Integrated Channel (I2C), and so on.

[0126] NFC control circuit 202 :

[0127] The NFC control circuit 202 may include a suitable circuitry configured to perform one or more operations. For example, the NFC control circuit 202 may be configured to detect a first rechargeable device 104a within proximity to the charging system 102. The NFC control circuit 202 may generate one or more signals and provide said one or more signals to the first transceiver 108a to generate an electromagnetic field, and may detect the first rechargeable device 104a upon detecting a change in the electromagnetic field within proximity. The NFC control circuit 202 may be further configured to establish a first wireless communication upon determining that the first rechargeable device 104a is within proximity. To establish the first wireless communication, the NFC control circuit 202 may be further configured to generate one or more first setup requests F1-FN. The NFC control circuit 202 may be further configured to send one or more first setup requests F1-FN to the first rechargeable device 104a via the first transceiver 108a. In some embodiments, the NFC control circuit 202 may be further configured to wait for one or more first setting responses FR1-FRN for a first time period based on the transmission of one or more first setting requests F1-FN.

[0128] In some scenarios, the NFC control circuit 202 may be further configured to receive one or more first setup responses FR1-FRN from the first rechargeable device 104a during a first time period based on one or more first setup requests F1-FN. The NFC control circuit 202 may also be further configured to initiate decoding of one or more first setup responses FR1-FRN in response to receiving them. Furthermore, the NFC control circuit 202 may detect an error in the first wireless communication based on the failure to decode one or more first setup responses FR1-FRN. In another scenario, the NFC control circuit 202 may detect an error in the first wireless communication based on the failure to receive one or more first setup responses FR1-FRN at the end of the first time period. The failure to receive one or more first setup responses FR1-FRN may be based on the first rechargeable device 104a being unable to generate one or more first setup responses FR1-FRN due to crosstalk or other interference.

[0129] The NFC control circuit 202 may be further configured to initiate the execution of a retry algorithm in response to the detection of an error in the first wireless communication. The retry algorithm may be stored in a memory (e.g., memory 204) associated with the first charging circuit 103a. The first charging circuit 103a may reconstruct the first wireless communication based on the execution of the retry algorithm. After initiating the execution of the retry algorithm, the NFC control circuit 202 may be further configured to increment a first error counter 210 upon detecting an error in the first wireless communication. The NFC control circuit 202 may be further configured to compare the count CO of the first error counter 210 with a threshold TV and determine whether the count CO is below the threshold TV. The NFC control circuit 202 may be further configured to receive the threshold TV from the threshold configuration circuit 208 before establishing the first wireless communication. The NFC control circuit 202 may be further configured to store the threshold TV in a memory associated with the NFC control circuit 202.

[0130] In one embodiment, the NFC control circuit 202 may generate a first delay value FD when it determines that the count CO is less than or equal to a threshold TV. The NFC control circuit 202 may also be configured to receive the first delay value FD from a random number generator 206 and determine a first time delay based on the first delay value FD and the duration.

[0131] The NFC control circuit 202 may be further configured to reconstruct the first wireless communication after a first time delay. In one embodiment, the NFC control circuit 202 may be configured to charge the first rechargeable device 104a by providing a power supply PS from the first power source 112 to the first rechargeable device 104a based on the successful reconstruction of the first wireless communication. The NFC control circuit 202 may also be further configured to receive a clock signal CS from the clock generator 110.

[0132] In another embodiment, when the count CO of the first error counter 210 is determined to exceed the threshold TV, the NFC control circuit 202 may be further configured to restart. The NFC control circuit 202 may also be further configured to reset the count CO of the first error counter 210 to a default value and may detect whether the first rechargeable device 104a is within proximity to the charging system 102. After restarting, the NFC control circuit 202 may be further configured to establish a first wireless communication with the first rechargeable device 104a. Examples of the NFC control circuit 202 may be a central processing unit (CPU), a graphics processing unit (GPU), a microcontroller, an application-specific integrated circuit (ASIC), etc.

[0133] Memory 204:

[0134] Memory 204 may include suitable logic, circuitry, and / or interfaces for storing data. For example, memory 204 may be configured to store a retry algorithm. Examples of memory 204 may include random access memory (RAM), read-only memory (ROM), hard disk drive (HDD), flash memory, solid-state memory, etc.

[0135] Random number generator 206 :

[0136] Random number generator 206 may include suitable circuitry configured to perform one or more operations. For example, random number generator 206 may be configured to generate a first delay value FD based on determining that a count CO is less than a threshold TV. Random number generator 206 may randomly generate the first delay value FD. Random number generator 206 may generate the first delay value FD by executing a random number generation algorithm. Random number generator 206 may provide the first delay value FD to NFC control circuitry 202 for reconstructing the first wireless communication.

[0137] A random number generation algorithm may include one or more mathematical operations, such as addition and bitwise operations, to generate a first delay value FD. The random number generation algorithm may be based on the type of random number generation criterion followed in generating the first delay value FD. Examples of random number generation algorithms may include linear congruential generators, Mersenne twisters, Xor shifts, etc. In one or more embodiments, the first delay value FD may be an integer value.

[0138] Threshold configuration circuit 208:

[0139] The threshold configuration circuit 208 may include a suitable circuitry configured to perform one or more operations. For example, the threshold configuration circuit 208 may be configured to define a threshold TV that indicates the total number of acceptable attempts by the NFC control circuit 202 to reconstruct the first wireless communication. The threshold configuration circuit 208 may be configured to provide the threshold TV to the NFC control circuit 202 prior to establishing the first wireless communication. The threshold configuration circuit 208 may define the threshold TV based on the type of rechargeable device (e.g., the first rechargeable device 104a) that can be identified at the initial establishment of the first wireless communication.

[0140] First error counter 210:

[0141] The first error counter 210 may include suitable circuitry configured to perform one or more operations. For example, the first error counter 210 may be configured to store a count CO. Upon detecting an error in the first wireless communication, the NFC control circuit 202 may increment the count CO of the first error counter 210. When the count CO of the first error counter 210 may be less than or equal to a threshold TV, the NFC control circuit 202 may generate a first delay value FD. Furthermore, based on the determination that the count CO of the first error counter 210 may exceed the threshold TV, the NFC control circuit 202 may be additionally configured to restart the first charging circuit 103a. After restarting, the NFC control circuit 202 may be additionally configured to reset the first error counter 210.

[0142] In one embodiment, the NFC control circuit 202 can reconstruct the first wireless communication after a time delay associated with a delay value within a range of delay values ​​that can be configured by the NFC control circuit 202 at least partially based on a first delay value FD. In one scenario, the NFC control circuit 202 can configure the range of delay values ​​based on the type of rechargeable device. In an example, the delay value range could include the delay value for headphones as a rechargeable device and the delay value for a hearing aid as a rechargeable device, such that the delay value for headphones is lower than the delay value for the hearing aid. In one or more embodiments, a delay value for the device can be determined from the delay value range, and then a time delay can be determined based on the first delay value FD and the determined delay value through mathematical operations (multiplication, addition, etc.). The NFC control circuit 202 can reconstruct the first wireless communication after the determined time delay.

[0143] Although the random number generation algorithm shown can be executed by the random number generator 206, in another embodiment, the NFC control circuit 202 can be configured to execute the random number generation algorithm.

[0144] Figures 3A-3C These are timing diagrams 300A-300C illustrating an exemplary scenario of simultaneously charging a rechargeable device according to embodiments of the present disclosure.

[0145] Figure 3A This is a timing diagram 300A illustrating an exemplary scenario of the impact of crosstalk interference on a first wireless communication.

[0146] At time T0, the first charging circuit 103a can establish a first wireless communication with the first rechargeable device 104a by sending one or more first setting requests F1-FN to the first rechargeable device 104a. During times T0 and T1, the first charging circuit 103a can receive a first setting response FR1 from the first rechargeable device 104a in response to the first setting request F1.

[0147] At time T1, the first charging circuit 103a may send a second setting request F2 from one or more first setting requests F1-FN. Therefore, the first rechargeable device 104a may receive the second setting request F2 and generate a second setting response FR2. During time T1-T2, when the second setting response FR2 is sent to the first charging circuit 103a, crosstalk interference may occur due to the second wireless communication established between the second charging circuit 103b and the second rechargeable device 104b. Crosstalk interference may cause the second setting response FR2 to be lost. Therefore, the first charging circuit 103a may detect a failure to receive the second setting response FR2 within a first time period. The first charging circuit 103a may thus detect an error in the first wireless communication. The second wireless communication remains unaffected by the first wireless communication. Therefore, one or more second setting requests S1-SN (e.g., a fourth setting request S1 and a fifth setting request S2 in one or more second setting requests S1-SN) and one or more second setting responses SR1-SRN (e.g., a fourth setting response SR1 in one or more second setting responses SR1-SRN and a fifth setting response SR2 in one or more second setting responses SR1-SRN) are respectively sent and received by the second charging circuit 103b.

[0148] At time T2, the first charging circuit 103a may reconstruct the first wireless communication after a first time delay FTD following an error detected during time T1-T2. The first time delay FTD may indicate the time interval between the first time T1 and the second time T2. The first charging circuit 103a may determine the first time delay FTD based on a first delay value FD and the duration that the first charging circuit 103a may need to perform one or more tasks to reconstruct the first wireless communication. The first time delay FTD may be a multiple of the duration based on the first delay value FD. The first charging circuit 103a may send one or more first setup requests F1-FN (e.g., first setup request F1 and second setup request F2) to the first rechargeable device 104a. During time T2-T3, the first charging circuit 103a may receive one or more first setup responses FR1 and FR2 in response to one or more first setup requests F1-FN. After successfully decoding one or more first setup responses FR1 and FR2, the first charging circuit 103a may detect the successful reconstruction of the first wireless communication and charge the first rechargeable device 104a based on the successful reconstruction of the first wireless communication.

[0149] Figure 3BTiming diagram 300B illustrates another exemplary scenario of the impact of crosstalk interference on the first wireless communication. At time T0, the first charging circuit 103a can establish first wireless communication with the first rechargeable device 104a by sending one or more first setting requests F1-FN to the first rechargeable device 104a. During times T0 and T1, the first charging circuit 103a can receive a first setting response FR1 from the first rechargeable device 104a in response to the first setting request F1. Furthermore, the first charging circuit 103a can send a second setting request F2.

[0150] At time T1, when the second setting response FR2 is sent to the first charging circuit 103a, crosstalk interference may occur in the second wireless communication, thereby affecting the quality of the second setting response FR2 (a corrupted response). The first charging circuit 103a can receive the second setting response FR2 from one or more first setting responses FR1-FRN. Since the first charging circuit 103a may not be able to decode the second setting response FR2 that may be affected by crosstalk, the first charging circuit 103a can detect an error in the first wireless communication.

[0151] During time T1-T2, the second wireless communication remains unaffected by the first wireless communication. Therefore, one or more second setting requests S1-SN (e.g., fourth setting request S1 and fifth setting request S2) and one or more second setting responses SR1-SRN (e.g., fourth setting response SR1 and fifth setting response SR2) are sent and received by the second charging circuit 103b.

[0152] At time T2, the first charging circuit 103a can reconstruct the first wireless communication after a first time delay FTD following the detection of an error at time T1. The first time delay FTD indicates the time interval between the first time T1 and the second time T2. The first charging circuit 103a can send one or more first setup requests F1-FN (e.g., first setup request F1 and second setup request F2) to reconstruct the first wireless communication.

[0153] During time T2-T3, the first charging circuit 103a may receive one or more first setting responses FR1 and FR2 in response to one or more first setting requests F1-FN. Therefore, the first charging circuit 103a may detect the successful reconstruction of the first wireless communication and charge the first rechargeable device 104a based on the successful reconstruction of the first wireless communication.

[0154] Figure 3CTiming diagram 300C illustrates another exemplary scenario of the impact of crosstalk interference on the first and second wireless communications. At time T0, the first charging circuit 103a and the second charging circuit 103b can establish the first and second wireless communications by sending a first setting request F1 and a fourth setting request S1 to the first rechargeable device 104a and the second rechargeable device 104b, respectively. During time T0-T1, when the first setting request F1 and the fourth setting request S1 are sent to the first rechargeable device 104a and the second rechargeable device 104b, crosstalk interference may occur, resulting in the loss of the first setting request F1 and the fourth setting request S1. Therefore, the first rechargeable device 104a and the second rechargeable device 104b may be unable to generate the first setting response FR1 and the fourth setting response SR1, respectively. Based on the failure to receive the first setting response FR1 and the fourth setting response SR1 in the first time period and the second time period, respectively, the first charging circuit 103a and the second charging circuit 103b can therefore detect errors in the first and second wireless communications, respectively.

[0155] At time T1, the second charging circuit 103b can reconstruct the second wireless communication after a second time delay STD following the detection of an error during the time interval T0-T1. The second time delay STD indicates the time interval between time T0 and time T1. The second charging circuit 103b can determine the second time delay STD by multiplying the second delay value SD (e.g., a delay value in a set of delay values) by the duration that the second charging circuit 103b may need to perform one or more tasks to reconstruct the second wireless communication.

[0156] During time interval T1-T2, the second charging circuit 103b may send one or more second setting requests S1-SN (e.g., a fourth setting request S1 and a fifth setting request S2) to re-establish the second wireless communication. Furthermore, the second charging circuit 103b may receive one or more second setting responses SR1-SRN (e.g., a fourth setting response SR1 and a fifth setting response SR2). After successfully decoding one or more second setting responses SR1-SRN, the second charging circuit 103b may detect that the second wireless communication has been successfully re-established and may initiate charging of the second rechargeable device 104b.

[0157] At time T2, the first charging circuit 103a can reconstruct the first wireless communication after detecting an error in the first wireless communication, following a first time delay FTD. The first time delay FTD indicates the time interval between time T1 and time T3. The second time delay STD and the first time delay FTD can be different based on the second delay value SD and the first delay value FD, respectively. Therefore, the crosstalk interference caused by the reconstruction of the first and second wireless communications is mitigated.

[0158] During time T2-T3, the first charging circuit 103a may send one or more first setting requests F1-FN (e.g., first setting request F1 and second setting request F2) to reconstruct the first wireless communication. The first charging circuit 103a may receive one or more first setting responses FR1 and FR2 (e.g., first setting response FR1 and second setting response FR2) in response to one or more first setting requests F1-FN. Therefore, the first charging circuit 103a may detect the successful reconstruction of the first wireless communication and charge the first rechargeable device 104a based on the successful reconstruction of the first wireless communication. Similarly, the second charging circuit 103b may detect the successful reconstruction of the second wireless communication and charge the second rechargeable device 104b based on the successful reconstruction of the second wireless communication.

[0159] Figure 4A and 4B Flowchart 400 illustrates a wireless charging method according to an embodiment of the present disclosure. Flowchart 400 describes the operations performed by a first charging circuit 103a and a second charging circuit 103b. (For simplicity...) Figure 4A and 4B It is assumed that the first wireless communication may be affected by crosstalk interference attributed to the second wireless communication. Furthermore, those skilled in the art will understand that the impact of crosstalk interference attributed to the first wireless communication on the second wireless communication can be mitigated in a manner similar to mitigating the impact of crosstalk interference on the first wireless communication.

[0160] refer to Figure 4A In step 402, the first charging circuit 103a may establish a first wireless communication with the first rechargeable device 104a when it detects that the first rechargeable device 104a is within the proximity of the charging system 102. The first charging circuit 103a may establish the first wireless communication by sending one or more first setting requests F1-FN to the first rechargeable device 104a via the first transceiver 108a. After sending one or more first setting requests F1-FN to the first rechargeable device 104a, the first rechargeable device 104a may wait for the reception of one or more first setting responses FR1-FRN from the first rechargeable device 104a until the end of the first time period.

[0161] In step 404, the first charging circuit 103a may detect an error in the first wireless communication based on one or more first setting requests F1-FN. An error may be detected based on either failure to decode one or more first setting responses FR1-FRN within a first time period or failure to receive at least one of one or more first setting responses FR1-FRN.

[0162] In step 406, the second charging circuit 103b can establish a second wireless communication with the second rechargeable device 104b. The second charging circuit 103b can establish the second wireless communication when it detects that the second rechargeable device 104b is within proximity of the charging system 102. For the sake of simplicity, it is assumed that the second wireless communication is successful.

[0163] Now for reference Figure 4B In step 408, the first charging circuit 103a may increment the count CO of the first error counter 210 after detecting an error in the first wireless communication. In step 410, the first charging circuit 103a may determine whether the count CO of the first error counter 210 exceeds a threshold TV after incrementing the first error counter 210. If it is determined that the count CO of the first error counter is less than or equal to the threshold TV, then step 412 is executed. In step 412, when the count CO of the first error counter 210 is less than or equal to the threshold TV, the first charging circuit 103a may generate a first delay value FD. The first charging circuit 103a may generate the first delay value FD by executing a random number generation algorithm. In step 414, the first charging circuit 103a may determine a first time delay FTD based on the first delay value FD and the duration that the first charging circuit 103a may need to reconstruct the first wireless communication. In step 415, the first charging circuit 103a may reconstruct the first wireless communication after the first time delay FTD.

[0164] In step 410, if it is determined that the count CO of the first error counter 210 exceeds the threshold TV, then step 416 is executed. In step 416, when the count CO of the first error counter 210 exceeds the threshold TV, the first charging circuit 103a can be restarted. In step 418, the first charging circuit 103a can reset the first error counter 210 after restarting. After restarting, step 402 is executed.

[0165] Now for reference Figure 4C In step 420, the first charging circuit 103a determines whether the reconstruction of the first wireless communication was successful. If the reconstruction of the first wireless communication is successful, step 422 is executed. In step 422, the first charging circuit 103a can charge the first rechargeable device 104a based on the successful reconstruction of the first wireless communication. In step 420, if the reconstruction of the first wireless communication fails, step 408 is executed. After step 406, step 424 is executed. In step 424, the second charging circuit 103b can charge the second rechargeable device 104b based on the successful reconstruction of the second wireless communication.

[0166] Therefore, this disclosure significantly reduces the error probability caused by crosstalk interference in the first wireless communication between the first charging circuit 103a and the first rechargeable device 104a by randomly reconstructing the wireless communication between one or more charging circuits (e.g., the second charging circuit 103b) and the corresponding rechargeable device (e.g., the second rechargeable device 104b) based on corresponding delay values. Furthermore, the charging system 102 avoids including any additional hardware to physically shield the charging circuits, thereby reducing the cost of the charging system 102. Additionally, compared to conventional techniques that suggest charging each device one at a time or managing the charging timing of each device by coupling each charging circuit to the control circuitry of a conventional charging system, the overall charging efficiency of the charging system 102 of this disclosure is improved.

[0167] While various embodiments of this disclosure have been shown and described, it should be understood that this disclosure is not limited to these embodiments. Many modifications, alterations, variations, substitutions, and equivalents will be apparent to those skilled in the art without departing from the spirit and scope of this disclosure as set forth in the claims. Furthermore, unless otherwise stated, terms such as “first” and “second” are used to arbitrarily distinguish elements described by such terms. Therefore, these terms are not necessarily intended to indicate a temporal or other priority ordering of such elements.

[0168] In embodiments of this disclosure, a wireless charging system is disclosed. The wireless charging system may include a charging circuit. The charging circuit may be configured to establish wireless communication with a rechargeable device, wherein the wireless communication may be associated with charging the rechargeable device. The charging circuit may be further configured to detect errors in the wireless communication. The charging circuit may be further configured to generate a delay value based on the errors detected in the wireless communication. The charging circuit may be further configured to reconstruct the wireless communication with the rechargeable device after a time delay, wherein the time delay may be based on the delay value.

[0169] In some embodiments, the charging circuit may additionally include an error counter, and the charging circuit may be additionally configured to increment the count of the error counter after an error is detected in the wireless communication.

[0170] In some embodiments, the charging circuit may be additionally configured to compare the count of an error counter with a threshold. The charging circuit may also be additionally configured to determine, based on the comparison, whether the count of the error counter is below the threshold.

[0171] In some embodiments, the charging circuit may generate a delay value based on determining that the error counter count is less than or equal to a threshold.

[0172] In some embodiments, the charging circuit may be additionally configured to restart based on the determination that the error counter count may exceed a threshold.

[0173] In some embodiments, the charging circuit may be additionally configured to reset the error counter upon restart.

[0174] In some embodiments, where wireless communication is successfully rebuilt, the charging circuit may be additionally configured to charge the rechargeable device.

[0175] In some embodiments, the charging circuit may be additionally configured to generate one or more setup requests in order to establish wireless communication. The charging circuit may also be additionally configured to send one or more setup requests to the rechargeable device.

[0176] In some embodiments, the charging circuit may be further configured to wait for one or more setting responses from the rechargeable device for a period of time based on the transmission of one or more setting requests, and the charging circuit may detect an error in the wireless communication based on the fact that no one or more setting responses are received at the end of the period.

[0177] In some embodiments, the charging circuit may be further configured to receive one or more setting responses sent in response to one or more setting requests from the rechargeable device. The charging circuit may also be further configured to initiate decoding of the one or more setting responses.

[0178] In some embodiments, an error detected in wireless communication may indicate an error in decoding one or more setup responses.

[0179] In some embodiments, the charging circuit may include a random number generator, wherein the random number generator may be configured to generate a delay value.

[0180] In some embodiments, the charging circuit may be additionally configured to determine the time delay based on the duration associated with the reconstruction of wireless communication.

[0181] In some embodiments, the delay value may be generated randomly.

[0182] In some embodiments, the wireless charging system may further include a set of charging circuits configured to control the charging of a corresponding set of rechargeable devices based on a set of delay values, wherein the delay values ​​are different from the set of delay values.

[0183] In some embodiments, the wireless charging system may further include a clock generator coupled to the charging circuit and the assembly of charging circuits, wherein the clock generator is configured to generate a clock signal. The clock generator may also be further configured to provide a clock signal to each of the charging circuit and the assembly of charging circuits, wherein each of the charging circuit and the assembly of charging circuits may be synchronized based on the clock signal.

[0184] In some embodiments, the error may indicate crosstalk interference from at least one charging circuit in a set of charging circuits in wireless communication.

[0185] In some embodiments, wireless communication may be near-field communication.

[0186] In other embodiments of this disclosure, a wireless charging method is disclosed. The wireless charging method may include establishing wireless communication with a rechargeable device by a charging circuit, wherein the wireless communication may be associated with charging the rechargeable device. The wireless charging method may further include detecting errors in the wireless communication by the charging circuit. The wireless charging method may further include generating a delay value by the charging circuit based on the errors detected in the wireless communication. The wireless charging method may further include reconstructing the wireless communication with the rechargeable device by the charging circuit after a time delay, wherein the time delay may be based on the delay value.

[0187] In some embodiments, the wireless charging method may further include incrementing an error counter of the charging circuit after detecting an error in the wireless communication. The wireless charging method may further include comparing the error counter count with a threshold by the charging circuit. The wireless charging method may further include determining, based on the comparison, whether the error counter count is below a threshold, wherein the charging circuit may generate a delay value based on determining that the error counter count is less than or equal to the threshold, and wherein the delay value may be randomly generated.

Claims

1. A wireless charging system, characterized in that, include: The charging circuit is configured as follows: Establish wireless communication with a rechargeable device, wherein the wireless communication is associated with charging the rechargeable device; Detecting errors in the wireless communication; A delay value is generated based on the error detected in the wireless communication; as well as The wireless communication with the rechargeable device is reconstructed after a time delay, wherein the time delay is based on the delay value.

2. The wireless charging system according to claim 1, characterized in that, The charging circuit further includes an error counter, and wherein, upon detecting the error in the wireless communication, the charging circuit is further configured to increment the count of the error counter.

3. The wireless charging system according to claim 2, characterized in that, The charging circuit is further configured to: The count of the error counter is compared with a threshold; and The error counter count is determined based on the comparison to determine whether it is below the threshold.

4. The wireless charging system according to claim 1, characterized in that, Based on the successful reconstruction of the wireless communication, the charging circuit is further configured to charge the rechargeable device.

5. The wireless charging system according to claim 1, characterized in that, To establish the wireless communication, the charging circuit is further configured as follows: Generate one or more setup requests; and Send the one or more setup requests to the rechargeable device.

6. The wireless charging system according to claim 1, characterized in that, The charging circuit includes a random number generator, wherein the random number generator is configured to generate the delay value.

7. The wireless charging system according to claim 1, characterized in that, The charging circuit is further configured to determine the time delay based on the duration associated with the reconstruction of the wireless communication.

8. The wireless charging system according to claim 1, characterized in that, The delay value is randomly generated.

9. The wireless charging system according to claim 1, further comprising a set of charging circuits configured to control the charging of a corresponding set of rechargeable devices based on a set of delay values, characterized in that, The delay value is different from the set of delay values.

10. A wireless charging method, characterized in that, include: Wireless communication with a rechargeable device is established by a charging circuit, wherein the wireless communication is associated with charging of the rechargeable device; Errors in the wireless communication are detected by the charging circuit. The charging circuit generates a delay value based on the error detected in the wireless communication; as well as The wireless communication with the rechargeable device is reconstructed by the charging circuit after a time delay, wherein the time delay is based on the delay value.

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