TWI727155B - Emarker and associated cable and power management method - Google Patents

Abstract

E-Marker apparatus and related cable and power management method. The E-Marker apparatus is applied in the cable electrically connected between a first port and a second port. The cable includes a configuration channel wire. The E-Marker apparatus includes a first E-Marker disposed adjacent to the first port and a second E-Marker disposed adjacent to the second port. The first E-Marker is electrically connected to the first power supply pin of the first port and the second power supply pin of the second port. The first and second e-marker includes a first and a second active protection module coupled to the configuration channel wire, and one of the first and the second active protection module will change the electrical characteristics of the configuration channel wires when a predetermined event occurs so that the port detects that the second port is not mounted.

Description

Electronic marking device and related cable and power management method

The present invention relates to an electronic marking device and related cables and methods, in particular to a type C USB (USB type C; USB) that can actively and spontaneously protect against abnormal events such as overcurrent, overvoltage, and/or overtemperature. It is the abbreviation of Universal Serial Bus, the Chinese translation is: Universal Serial Bus) electronic marker and related cables and methods.

Type-C USB specification is an emerging and versatile interface standard that not only supports typical USB data interconnection (interconnection), but also develops diversified power transmission options to power from one electronic product to another electronic product, such as The mobile power is supplied to the mobile phone, or from the host computer to the display, etc. Type-C USB power transmission options include: USB specification version 2.0 5 volt x 0.5 ampere power supply, USB specification version 3.1 5 volt x 0.9 ampere power supply, USB battery charging (Battery Charging) specification version 1.2 5 volt x1. 5 amp power supply (type A USB connector), 5 volt x 1.5 amp power supply (type C USB connector), 5 volt x 3.0 ampere power supply (type C USB connector), and flexible under the specifications of USB Power Delivery Equipped with a power supply of up to 20 volts x 5 amps (type C USB connector).

In order to respond to diversified power transmission options, a configuration channel wire and an electronic marker (E-Marker) can be provided in the C-type USB specification cable; when the cable is connected to a USB power transmission specification and can be used as When the interface port of the power supply terminal (source), the interface port can send a request message on the configuration channel wire, and the electronic marker in the cable can respond to a data message on the configuration channel wire after receiving the request message. So that the interface port can know the relevant information of the cable, such as the voltage, current and/or power that the cable can bear and withstand.

Since the power difference between different power transmission options in the Type-C USB specification is quite large (from less than 5 watts to a maximum of 100 watts), power supply safety has also become the focus of attention.

For the safety of power supply, when one interface port as the power supply terminal and the other as the sink interface are connected to each other via a Type-C USB cable, if both interface ports support the USB power transmission standard, it can be The over-voltage and over-current (over-current) warning messages are exchanged through the configuration channel wires in the cable. However, this kind of power supply safety countermeasure requires that both the power supply end interface port and the power receiving end interface port support the USB power transfer specification in order to work. However, the Type-C USB specification does not force the interface port to support the USB power transfer specification; if power is supplied One of the end interface port and the receiving end interface port does not support the USB power transfer specification, and this kind of power supply security mechanism cannot be implemented at all.

In order to overcome the shortcomings of the above-mentioned conventional power supply safety mechanism, the present invention provides an electronic marking device, which is applied to a cable electrically connected between a first interface port and a second interface port. The cable includes a configuration channel wire. The electronic marking device includes: a first electronic marker, arranged adjacent to the first interface port and electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port, the The first electronic marker includes a first active protection module coupled to the configuration channel wire; and a second electronic marker is disposed adjacent to the second interface port, and the second electronic marker includes a coupling A second active protection module in the configuration channel wire, and any one of the first active protection module and the second active protection module will change the configuration channel wire when a preset event occurs Electrical characteristics, so that the first interface port detects that the second interface port is not connected.

The present invention also provides a cable electrically connected between a first interface port and a second interface port. The cable includes: a configuration channel wire; and a first electronic marker disposed adjacent to the first interface The ports are electrically connected to a first power supply pin of the first interface port and a second power supply pin of the second interface port. The first electronic marker includes a wire coupled to the configuration channel A first active protection module; and a second electronic marker, arranged adjacent to the second interface port and taking power from the first electronic marker through an internal power supply line, the second electronic marker including A second active protection module coupled to one of the configuration channel wires, and any one of the first active protection module and the second active protection module will change the configuration channel when a preset event occurs The electrical characteristics of the wire enable the first interface port to detect that the second interface port is not connected.

The present invention further provides a power management method applied to a cable. The cable includes a configuration channel wire and is electrically connected between a first interface port and a second interface port. The method includes the following steps: A first electronic marker changes the electrical characteristics of the configuration channel wire in response to a first predetermined event occurring adjacent to the first interface port, so that the first interface port detects that the second interface port is not connected; And making a second electronic marker change the electrical characteristics of the configuration channel wire in response to a second predetermined event occurring adjacent to the second interface port, so that the first interface port detects that the second interface port is not connected Pick up.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

Please refer to Figure 1. Fig. 1 shows a cable 10 and an electronic marker 60 according to an embodiment of the present invention. The cable 10 can be a C-type USB cable for connecting two interface ports P1 and P2; the two interface ports P1 and P2 can belong to two different electronic products (not shown). The cable 10 may include an electronic marker 60, a wire CC, at least one wire Vbus, and at least one wire GND; wherein, the wire Vbus is a bus bar power wire, the wire CC is a configuration channel wire, and the wire GND is a ground wire.

The cable 10 may also include a plurality of data wires 12 to support the USB data interconnection between the interface ports P1 and P2, for example, to support the high-speed interconnection of USB version 2.0. Active signal wires, several sideband signal wires and/or multiple pairs of differential signal wires that support USB version 3.1 SuperSpeed interconnection.

The interface port P1 can include pins p1a to p1d; the pin p1a can be the bus power pin Vbus under the type C USB specification, and the pin p1d can be the ground terminal pin GND under the type C USB specification; the pin p1b can It is one of the pins CC1 and CC2 under the Type C USB specification, and the pin p1c is the other of the pins CC1 and CC2. Similarly, the interface port P2 can include pins p2a to p2d; the pin p2a can be the bus power pin Vbus under the type C USB specification, and the pin p2d can be the ground terminal pin GND under the type C USB specification; The pin p2b can be one of the pins CC1 and CC2 under the Type-C USB specification, and the pin p2c is the other of the pins CC1 and CC2.

When the interface port P1 and the interface port P2 are connected to each other via the cable 10, the pin p1a of the interface port P1 can be coupled to the pin p2a of the interface port P2 via the wire Vbus, and the pin p1b of the interface port P1 can be coupled via the wire CC Connected to the pin p2b of the interface port P2, the pin p1d of the interface port P1 can be coupled to the pin p2d of the interface port P2 via the wire GND.

Furthermore, the cable 10 may further include isolation elements 52 and 54 disposed on a wire Vconn; wherein, the isolation element 52 is coupled between the node n1 and the node n2, and the isolation element 54 is coupled to the node n2 and the node n2. between n3. When the interface ports P1 and P2 are connected to each other via the cable 10, the pin p1c of the interface port P1 can be coupled to the node n1, the pin p2c of the interface port P2 can be coupled to the node n3, and the isolation elements 52 and 54 can avoid the connection. An end-to-end traverse occurs between the pins p1c and p2c via the wire Vconn.

The cable 10 may also include two impedances 56 and 58. The impedance 56 is coupled between the node n1 and the node G on the wire GND, and the impedance 58 is coupled between the node n3 and the node G. When the cable 10 is connected to the interface port P1, the cable 10 can present a terminal resistance between the nodes n1 and G through the impedance 56, such as the resistance Ra under the C-type USB specification. Similarly, when the cable 10 is connected to the interface port P2, the cable 10 can present a terminal resistance between the nodes n3 and G through the impedance 58, such as the resistance Ra under the C-type USB specification. In an embodiment, the Ra of the impedance 56 and the impedance 58 in Figure 1 may be the same impedance element; for example, the impedance 58 may be omitted.

The electronic marker 60 in the cable 10 may include a configuration channel communication circuit 50, which is coupled to the wire CC at the node n4; in order to realize the present invention, it may also include an active protection module 40. In one embodiment, the channel communication circuit 50, the active protection module 40, the isolation elements 52 and 54, and the impedances 56 and 58 are packaged in the same electronic marker chip. In another embodiment, the channel communication circuit 50 and the active protection module 40 can be packaged in the same electronic marker chip, and the isolation elements 52 and 54 and/or the impedances 56 and 58 can be added.

When the interface ports P1 and P2 are connected via the cable 10, if one of the interface ports P1 and P2 can be used as a power supply terminal and the other can be used as a power receiving terminal, the power supply terminal interface port can transmit power to the power receiving terminal on the wire Vbus Interface port. For the convenience of description, the following assumes that the interface port P1 is the power supply terminal, and the interface port P2 is the power receiving terminal.

As mentioned earlier, the power supply security mechanism under the USB power transfer specification requires that the interface ports P1 and P2 both support the USB power transfer specification to operate; if one of the interface ports does not support the USB power transfer specification, the power security mechanism cannot be implemented. Furthermore, the power supply safety mechanism of the USB power transfer specification does not take into account the protection of cables and electronic markers. Moreover, in the USB power transfer specification, the purpose of the electronic marker is only to passively respond to the message after receiving the request message of the interface port, and will not and cannot initiate any power supply safety mechanism.

In order to overcome the above-mentioned shortcomings of the USB power transmission specification (and the USB type C specification), the electronic indicator 60 of the present invention is provided with an active protection module 40, which can actively initiate the power supply safety mechanism of the present invention. The active protection module 40 may include an active trigger circuit 20 and a protection circuit 30. The channel configuration communication circuit 50, the active trigger circuit 20, and the protection circuit 30 are also coupled to the wires Vconn and Vbus to draw the power required for operation from the wire Vconn or the wire Vbus. The protection circuit 30 is coupled to the active trigger circuit 20 and is coupled to the wire CC at the node n4. Together with Figure 1, please refer to Figure 2 and Figures 3a to 3c. Figure 2 illustrates the process 200 according to an embodiment of the present invention; the electronic marker 60 in the cable 10 can execute the process 200 to implement the active power supply safety mechanism according to the present invention. Figures 3a to 3c show the operation of the cable 10 and the interface ports P1 and P2. Figures 3a to 3c are only an embodiment of the present invention. Any application that enables the configuration channel communication circuit 50 and the active protection module 40 in the electronic marker 60 to draw power and start operating can implement the power supply safety mechanism in this case . In one embodiment, the power (power required for operation) of the electronic marker 60 can be provided by the wire Vconn or the wire Vbus. In another embodiment, the power received by the electronic marker 60 can be provided by an external battery or a charger. In the following embodiments, the power received by the electronic marker 60 is provided by the wire Vconn as an example for description.

As shown in Figure 3a, in the interface port P1 that can be used as a power supply terminal, pins p1b and p1c are respectively coupled to a high voltage Vcc (such as 3.3 volts or 5 volts DC voltage) through two internal components E1 and E2; The components E1 and E2 can be resistors (such as the resistance Rp mentioned in the C-USB specification) or current sources (such as the current source Ip mentioned in the C-USB specification). The interface port P1 monitors the voltage of the pins p1b and p1c to detect whether there is another interface port connected to the interface port P1. In Figure 3a, the interface port P1 has been connected to the cable 10, but there is no other interface port connected to the interface port P1 via the cable 10. Since the node n1 to which the pin p1c is coupled has an impedance 56 coupled to the ground wire GND and the ground pin p1d, the voltage of the pin p1c will be pulled down. However, on the other hand, the wire CC connected to the pin p1b has no way to be coupled to the ground wire GND, so the voltage of the pin p1b will not be pulled down and is greater than a predetermined open circuit voltage (such as Type C USB specifications). The voltage mentioned in vOPEN). The interface port P1 will determine that there is no other interface port connected to the interface port P1 because the voltage of the pin p1b is greater than the default open circuit voltage; if it is not connected, the interface port P1 will not supply power (supply voltage and current) to the wire Vbus .

In Figure 3b, the interface port P2, which can be used as a power receiving terminal, is connected to the interface port P1 via a cable 10. In the interface port P2, the pins p2b and p2c are respectively coupled to the ground terminal pin p2d through two internal impedances Z1 and Z2; the internal impedances Z1 and Z2 can be resistors (such as the resistor Rd mentioned in the C-type USB specification). Therefore, when the interface port P2 is connected to the interface port P1 via the cable 10, the wire CC coupled to the pin p1b is coupled to the ground wire GND coupled to the pin p2d through the internal impedance Z1 of the pin p2b, so that the connection The voltage of pin p1b is pulled down to be less than the aforementioned predetermined open circuit voltage. When the interface port P1 detects that the voltage of the pin p1b is less than the default open circuit voltage, it will determine that another interface port P2 is connected to the interface port P1. Then, the interface port P1 can transmit power to the interface port P2 via the wire Vbus in the cable 10; and the interface port P1 or P2 can also supply power to the wire Vconn via the node n1 or n3, so that the configuration channel in the electronic marker 60 The communication circuit 50 and the active protection module 40 can draw power from the wire Vconn to start operation, and execute the process 200 in FIG. 2. The main steps in the process 200 can be described as follows.

Step 202: As shown in Figure 3b, when the interface port P1 is powered to the interface port P2 via the cable 10, the electronic marker 60 can start the process 200; the active protection module 40 can proceed to step 204 to implement the present invention Power supply safety mechanism. Furthermore, the configuration channel communication circuit 50 can also perform dual-phase mask coding communication under the USB power transmission specification on the wire CC, including: receiving the SOP' (SOP for start of packet) packet sent from the interface port P1 or P2, and Send SOP' packet in response. However, it should be emphasized that the power supply security mechanism of the present invention does not need to wait for packet transmission between the interface ports P1 and P2 to be implemented and activated; as long as the electronic marker 60 is supplied with power, the power supply security mechanism of the present invention can be implemented independently, regardless of Whether packet transmission occurs between interface ports P1 and P2.

Step 204: If a predetermined event 22 (FIG. 1) occurs, the active trigger circuit 20 in the active protection module 40 can trigger the protection circuit 30 to proceed to step 206, otherwise it returns to step 204. In one embodiment, the predetermined event 22 reflects an abnormal power transmission event on the wire Vbus. For example, as shown in Figure 1, the preset event 22 may include an overvoltage protection event 24a, an overcurrent protection event 24b, an internal overtemperature protection event 24c, an external overtemperature protection event 24d, and an event 24e reflected by impedance sensing. and many more. Once any of the above events occurs, the active protection module 40 can proceed to step 206.

In order to detect the abnormal event, the active trigger circuit 20 can be coupled to the wire Vbus at the node n5 to determine whether the predetermined event 22 has occurred according to the power transmission characteristics of the wire Vbus (such as current, voltage and/or temperature, etc.). For example, if the voltage of the wire Vbus is too high (higher than a safe voltage value), the active trigger circuit 20 can determine that the overvoltage protection event 24a has occurred. If the current of the wire Vbus is too large (higher than a safe current value), the active trigger circuit 20 can determine that the overcurrent protection event 24b has occurred. Furthermore, the electronic marker 60 can sense temperature according to its own semiconductor characteristics. For example, an internal temperature sensor is built in the electronic marker 60 to sense the internal temperature of the chip. If the temperature is too high (higher than an internal safe temperature), the active trigger circuit 20 can determine that the internal over-temperature event 24c has occurred. In one embodiment, the electronic marker 60 can also be connected to a temperature sensing element (such as a thermistor, thermistor, not shown) outside the chip to sense the temperature; if the temperature is too high (above a safe temperature), it will be triggered automatically The circuit 20 can determine that the external over-temperature event 24d has occurred. In one embodiment, the electronic marker 60 can detect the power transmission characteristics of the wire Vbus via an impedance (not shown) coupled to the wire Vbus; for example, if the cross voltage of the impedance is too high, it means that the current of the wire Vbus is too large. The active trigger circuit 20 can determine that the event 24e reflected by the impedance sensing has occurred.

Step 206 (Figure 2): As shown in Figure 3c, the active trigger circuit 20 will trigger the protection circuit 30 when the preset event 22 occurs, and the protection circuit 30 will change the electrical characteristics of the wire CC when triggered, so that The power supply interface port P1 detects that the power receiver interface port P2 is separated and not connected, even though the interface ports P1 and P2 are actually connected to each other through the cable 10. In one embodiment, the protection circuit 40 can pull up the voltage of the wire CC to exceed the predetermined open circuit voltage mentioned in Figures 3a and 3b (for example, the voltage vOPEN defined in the Type-C USB specification). Since the voltage vOPEN defined in the Type-C USB specification can be 1.65 volts or 2.75 volts, in an embodiment of step 206, when a predetermined event occurs, the protection circuit 40 makes the voltage of the wire CC higher than a plurality of predetermined events. Set the largest open circuit voltage, for example, higher than 2.75 volts. In one embodiment, the protection circuit 40 can couple the wire CC to the wire Vconn or Vbus when the active trigger circuit 20 is triggered, and use the voltage of the wire Vconn or Vbus to make the voltage of the wire CC greater than the predetermined open circuit voltage because the power is supplied to the wire The voltage of Vconn or Vbus will be greater than the preset open circuit voltage.

As illustrated in Figure 3a, when the interface port P1 detects that the voltage of the pin p1b is higher than the default open-circuit voltage, it will be judged as "No other interface port is connected to the interface port P1", and it is not connected. No power will be supplied to the wire Vbus. Therefore, in Figure 3c, when a predetermined event occurs and the protection circuit 30 pulls up the voltage of the wire CC to exceed the predetermined open circuit voltage, the interface port P1 will also detect that the voltage of the pin p1b is higher than the predetermined voltage. Open circuit voltage, and determine that the interface port P2 is disconnected and not connected, even if the interface port P2 is still connected to the interface P1 via the cable 10.

Step 208: When the power supply interface port P1 detects that the power receiver interface port P2 is disconnected and not connected, the interface port P1 will stop supplying power to the wire Vbus, so that the abnormal power transmission event will no longer continue, thus realizing the power supply safety mechanism of the present invention. The process 200 may also end. When the power supply terminal interface port P1 stops transmitting power on the wire Vbus, the power on the wire Vconn will also stop supplying, so that the electronic marker 60 stops operating. After that, since the interface port P2 is still connected to the interface port P1 via the cable 10, the interface port P1 will sense that the interface port P2 is connected again, and restart the power supply on the wire Vbus, and the process 200 can also be restarted. In one embodiment, the cable 10 can be re-plugged to the interface port P1 and the interface port P2, and the process 200 in FIG. 2 is executed again.

The above-mentioned electronic marker 60 is usually integrated on one of the connectors at both ends of the cable 10, that is, in the connector housing (not shown) connected to the interface port P1 (or P2). For cost considerations, when only one electronic marker 60 is provided in one connector housing of a cable 10, since only a certain interface port P1 and the temperature of the connector housing can be sensed abnormally, when the cable When the temperature of the other end of the connector or the interface port is too high, this setting is impossible because the internal temperature sensor can not effectively detect the remote temperature change and cannot cut off the power immediately, making it possible risks of. Therefore, for the sake of safety, you can choose to install an electronic marker on the two connectors at both ends of the cable 10 to monitor whether the temperature of the connector housings at both ends of the cable is abnormal.

Please refer to FIG. 4, which shows a functional block diagram of a cable 10b and two electronic markers 60, 60b according to an embodiment of the present invention. The cable 10b can be a C-type USB cable for connecting the two interface ports P1 and P2; the two interface ports P1 and P2 can belong to two different electronic products (not shown). The cable 10b may include electronic markers 60 and 60b, a wire CC, at least one wire Vbus, and at least one wire GND; wherein, the wire Vbus is a bus bar power wire, the wire CC is a configuration channel wire, and the wire GND is a ground wire . The cable 10b may also include a plurality of data wires 12 to support the USB data interconnection between the interface ports P1 and P2, for example, a pair of differential signal wires supporting the high-speed interconnection in USB version 2.0, and several Side signal wires and/or multiple pairs of differential signal wires supporting USB version 3.1 super-speed interconnection.

The interface port P1 can include pins p1a to p1d; the pin p1a can be the bus power pin Vbus under the type C USB specification, and the pin p1d can be the ground terminal pin GND under the type C USB specification; the pin p1b can It is one of the pins CC1 and CC2 under the Type C USB specification, and the pin p1c is the other of the pins CC1 and CC2. Similarly, the interface port P2 can include pins p2a to p2d; the pin p2a can be the bus power pin Vbus under the type C USB specification, and the pin p2d can be the ground terminal pin GND under the type C USB specification; The pin p2b can be one of the pins CC1 and CC2 under the Type-C USB specification, and the pin p2c is the other of the pins CC1 and CC2.

When the interface port P1 and the interface port P2 are connected to each other via the cable 10b, the pin p1a of the interface port P1 can be coupled to the pin p2a of the interface port P2 via the wire Vbus, and the pin p1b of the interface port P1 can be coupled via the wire CC Connected to the pin p2b of the interface port P2, the pin p1d of the interface port P1 can be coupled to the pin p2d of the interface port P2 via the wire GND.

Furthermore, the cable 10b may still include isolation elements 52 and 52b. The isolation element 52 is disposed on a wire Vconn and is coupled between the node n1 and the node n2. The isolation element 52b is disposed on a wire VconnB, and is coupled between the node n1b and the node n2b. When the interface port P1 and the interface port P2 are connected to each other via the cable 10b, the pin p1c of the interface port P1 can be coupled to the node n1, and the pin p2c of the interface port P2 can be coupled to the node n1b.

The cable 10b may also include impedances 56 and 56b. The impedance 56 is coupled between the node n1 and the node G on the wire GND, and the impedance 56b is coupled between the node n1b and the node Gb on the wire GND. The impedance 56 and 56b may be matched. When the cable 10b is connected to the interface port P1, the cable 10b can present a terminal resistance between the nodes n1 and G through the impedance 56, such as the resistance Ra under the C-type USB specification. Similarly, when the cable 10b is connected to the interface port P2, the cable 10b can present a terminal resistance between the nodes n1b and Gb through the impedance 56b, such as the resistance Ra under the C-type USB specification.

The electronic marker 60 in the cable 10b may include a configuration channel communication circuit 50, which is coupled to the wire CC at the node n4; in order to realize the present invention, it may also include an active protection module 40. Similarly, the electronic marker 60b may include a configuration channel communication circuit 50b, which is coupled to the wire CC at the node n4b; in order to realize the present invention, it may also include an active protection module 40. The active protection module 40 may include an active trigger circuit 20 and a protection circuit 30; the active protection module 40b may include an active trigger circuit 20b and a protection circuit 30b. The channel configuration communication circuit 50, the active trigger circuit 20, and the protection circuit 30 are coupled to the wires Vconn and Vbus to draw the power required for operation from the wire Vconn or the wire Vbus. The protection circuit 30 is also coupled to the active trigger circuit 20, and is coupled to the wire CC at the node n4. The protection circuit 30b is also coupled to the active trigger circuit 20b, and is coupled to the wire CC at the node n4b. The channel configuration communication circuit 50b, the active trigger circuit 20b and the protection circuit 30b are coupled to the wires VconnB and Vbus to draw the power required for operation from the wire VconnB or the wire Vbus. Figure 4 is only an embodiment of the present invention. Any application that enables the configuration channel communication circuits 50 and 50b and the active protection modules 40 and 40b in the electronic markers 60 and 60b to draw power to start operation can be implemented. The power supply safety mechanism in China. In one embodiment, the electric power of the electronic markers 60 and 60b can be provided by the wire Vconn or the wire Vbus. In another embodiment, the electric power of the electronic markers 60 and 60b can be provided by an external battery or a charger. In the following embodiments, the electric markers 60 and 60b are provided by the wires Vconn and VconnB as an example for description.

In one embodiment, it is implemented in accordance with Figs. 4-38 of the USB Type-C specification version 1.2 and related descriptions. At least one of the active protection modules 40 and 40b executes steps 204 and 206 in Fig. 2. When the interface ports P1 and P2 are connected to each other via the cable 10b, one of the interface ports P1 and P2 can transmit power to the other interface port through the wire Vbus in the cable 10b, and the electronic marker 60 and the electronic marker 60b can Only one (first end connected to the interface port) will draw power so that one of the corresponding active protection modules 40 and 40b can perform steps 204 and 206 in FIG. 2. The active trigger circuit 20 (or 20b) can be coupled to the wire Vbus at node n5 (or n5b) to determine whether an abnormal power transmission event occurs according to the transmission characteristics of the wire Vbus (such as current, voltage, temperature, etc.), and when an abnormal event occurs (Step 204) The protection circuit 30 (or 30b) is triggered to make the protection circuit 30 (or 30b) pull up the voltage of the wire CC to exceed the preset open circuit voltage (Step 206), so that the power supply terminal interface ports are still in phase between the two interface ports. When the connection is detected, the disconnection is detected, and the power supply on the wire Vbus is stopped, so that the abnormal event will no longer continue. As long as at least one of the two active protection modules 40 and 40b can cause the voltage of the wire CC to exceed the predetermined open circuit voltage when an abnormal event occurs, it is sufficient to implement the power supply safety mechanism of the present invention. However, as mentioned above, in the circuit structure of FIG. 4, at the same time point, only one of the electronic marker 60 and the electronic marker 60b (first connected to the end of the interface port) can draw power, so the electronic marker 60 and the electronic marker 60b cannot be activated at the same time. In other words, in the two ends of the cable 10, this example can only sense the abnormal temperature of a certain interface port and the connector housing, so when the temperature of the other end of the cable or the interface port is too high When it is high, there will still be a situation where the above internal temperature sensor cannot effectively detect the remote temperature change and cannot immediately cut off the power supply, making it a possible risk of overheating.

In order to improve this shortcoming, this project developed another embodiment circuit block diagram as shown in Figure 5, which can be implemented in accordance with Figures 5-7 of the Type-C USB specification version 1.2 and related descriptions, so that the active protection module 40 Both and 40b can perform steps 204 and 206 in Figure 2 at the same time. The difference from FIG. 4 is that the pin p1c of the interface port P1 and the pin p2c of the interface port P2 are electrically connected by the same wire Vconn. In this way, whether it is powered by the pin p1c of the interface port P1 or the pin p2c of the interface port P2, both the electronic marker 60 and the electronic marker 60b can receive power at the same time.

In the specification, the electronic marker 60 and the electronic marker 60b share the wire CC for bi-phase mark coded (BMC) communication, and use different Start of Packet (hereinafter referred to as SOP) And SOP' and SOP' represent differently defined packet headers) to represent different components. This means that the configuration channel communication circuit 50 receives the SOP' sent by the interface port P1 or P2 on the wire CC and sends SOP' in response, and the configuration channel communication circuit 50b receives the SOP' sent by the interface port P1 or P2 on the wire CC. 'And send SOP'' in response. However, because the current direction between the interface port P1 and the interface port P2 can support bidirectionality, the configuration channel communication circuit 50 and the configuration channel communication circuit 50b in the cable 10 need to be able to correctly respond to the commands of SOP' and SOP'' , The internal circuits of the electronic marker 60 and the electronic marker 60b will become more complicated. In order to simplify the design, this case proposes the following circuit structure and operation method.

Please refer to Fig. 6, which is a schematic block diagram of the circuit of another embodiment developed in this project, in which an electronic marker composed of an electronic marker 70 and an electronic marker 70b is set near the interface port P1 and the interface port P2, respectively Device. The interface port P1 and the interface port P2 play the roles of source and sink respectively, and the roles can be exchanged, and the Vconn source can also be exchanged (that is, the Vconn power supply can be used by the interface Port P1 or interface port P2). As for the electronic marker 70 and the electronic marker 70b, only one of the electronic markers is configured to be coupled to the p1c of the interface port P1 and the p2c of the interface port P2 through the pins Vconn1 and Vconn2, respectively. In this example, the pins Vconn1 and Vconn2 of the electronic marker 70 are respectively coupled to p1c of the interface port P1 and p2c of the interface port P2. In this way, whether the interface port P1 or the interface port P2 plays the role of the Vconn source (Vconn source), the power can be sent to the electronic marker 70 through the pin Vconn1 or Vconn2, and the electronic marker 70 The active protection module 71 (consisting of the active trigger circuit 702 and the protection circuit 701) can operate normally. In addition, in order to allow the electronic marker 70b to receive power to operate normally, in this example, an internal power supply line VCCAH is provided in the cable between the electronic marker 70 and the electronic marker 70b, so that the electronic marker 70b can pass through The internal power supply line VCCAH receives power from the electronic marker 70.

As for the active trigger circuit 702 in the electronic marker 70, it is coupled to the wire Vbus and is arranged near the interface port P1. The active trigger circuit 702 can determine whether a representation occurs according to the power transmission characteristics of the wire Vbus and whether the temperature of the location is too high. Unusual preset event. If it is judged that a preset event representing an abnormality occurs, the active trigger circuit 702 will trigger the protection circuit 701, causing the protection circuit 701 to increase the voltage of the configuration channel wire (Configuration Channel wire, hereinafter referred to as the wire CC) to exceed the preset open circuit voltage, so that The power supply terminal interface port detects that it is not connected when the two interface ports are still actually connected, and then stops the power supply on the wire Vbus, so that the abnormal event will no longer continue.

In addition, the active trigger circuit 702b in the electronic marker 70b does not need to be coupled to the wire Vbus or Vconn1 or Vconn2 but needs to be located near the interface port P2. The active trigger circuit 702b can be used according to whether the temperature at the location is too high. To determine whether an abnormal temperature event has occurred. If it is determined that an abnormal temperature event has occurred, the active trigger circuit 702b will trigger the protection circuit 701b (the active trigger circuit 702b and the trigger protection circuit 701b constitute another active protection module 71b), so that the protection circuit 701b will increase the voltage of the wire CC to exceed the predetermined voltage. Set the open circuit voltage so that the power supply terminal interface port detects that it is not connected when the two interface ports are actually connected, and then stops the power supply on the wire Vbus, so that the abnormal temperature event can be removed.

It can be seen from the above illustrations that the electronic marker 70 and the electronic marker 70b are both electrically connected to the wire CC, so the wire CC is shared for bi-phase mark coded (BMC, bi-phase mark coded) communication. However, in order to reduce the complexity of the circuit and related actions, the configuration channel communication circuit 703 in the electronic marker 70 and the configuration channel communication circuit 703b in the electronic marker 70b in this example are simplified to only support the SOP' response. Need to support SOP", this will make the internal circuit of the electronic marker 70 and the electronic marker 70b simpler.

However, in order to avoid misoperation, the configuration channel communication circuit 703 and the configuration channel communication circuit 703b in this case will be set to operate normally when a specific condition is met. On the contrary, if the specific condition is not met, the configuration channel communication circuit Will be banned. For example, the specific condition is "whether the pins Vconn1 and Vconn2 of the electronic marker are electrically connected to the power supply pin p1c of the interface port P1 and the power supply pin p2c of the interface port P2". Taking this figure as an example, the pins Vconn1 and Vconn2 of the electronic marker 70 are electrically connected to the p1c of the interface port P1 and the p2c of the interface P2, so the configuration channel communication circuit 703 will operate normally, that is, for SOP' The response function is normally turned on. However, the pins Vconn1 and Vconn2 of the electronic marker 70b are not connected to any power source, and the above-mentioned specific conditions are not met. Therefore, the SOP' function of the protection circuit 703b will be turned off. In this way, when the SOP' signal is transmitted on the wire CC, the configuration channel communication circuit 703b whose SOP' function is turned off will not respond, but only the configuration channel communication circuit 703 whose SOP' function is normally turned on will respond. As a result, this setting will effectively avoid malfunctions. In another embodiment, of course, the configuration channel communication circuit 703 and the configuration channel communication circuit 703b in this case can be set to operate normally when a specific condition is not met. On the contrary, if the specific condition is met, the configuration channel communication The circuit will be disabled. In short, only one of the two configuration channel communication circuits will operate normally while the other is disabled, so that the system can operate normally without misjudgment.

In addition, the specific condition can also be changed to "The electronic marker is powered by another electronic marker through the internal power supply line VCCAH.". Therefore, as long as it is detected that the power is received from the VCCAH, it can be determined that the specific condition is satisfied and it can be determined that the SOP' function of the configuration channel communication circuit 703b is closed. As for the method of turning off the SOP' function (that is, the SOP' function is disabled), the following methods can also be used. (1) Directly turning off the receiving function of the configuration channel communication circuit 703b. (2) The receiving function of the configuration channel communication circuit 703b is normal, but it does not respond to any SOP'. (3) Directly turn off the power supply of the configuration channel communication circuit 703b. Of course, the electronic marker 70b without the channel communication circuit 703b can be manufactured separately, and the electronic marker 70b with the channel communication circuit 703 can be made in the cable 10 in combination. In another embodiment, when it is detected that power is received from VCCAH, it can be determined that the specific condition is satisfied and the SOP' function of the configuration channel communication circuit 703b is turned on, and the channel is configured on the other end. The communication circuit 703 turns off the SOP' function because it fails to detect that the power is received from the VCCAH.

Please refer to Figure 7, which is a circuit block diagram of another embodiment developed in this project, in which an electronic marker composed of an electronic marker 70 and an electronic marker 70b is set near the interface port P1 and the interface port P2, respectively Device. The interface port P1 and the interface port P2 play the roles of source and sink respectively, and the roles can be interchanged, and the Vconn source can also be interchanged. As for the electronic marker 70 and the electronic marker 70b, only one of the electronic markers is configured to be coupled to the p1c of the interface port P1 and the p2c of the interface port P2 through the pins Vconn1 and Vconn2, respectively. In this example, the pins Vconn1 and Vconn2 of the electronic marker 70 are respectively coupled to p1c of the interface port P1 and p2c of the interface port P2. In this way, whether the interface port P1 or the interface port P2 plays the role of the Vconn source (Vconn source), the power can be sent to the electronic marker 70 through the pin Vconn1 or Vconn2, and the electronic marker 70 The active protection module 71 (consisting of the active trigger circuit 702 and the protection circuit 701) can operate normally. In addition, in order to allow the electronic marker 70b to also receive power for normal operation, the electronic marker 70b in this example is coupled to the wire Vbus so that the electronic marker 70b can be powered by the wire Vbus.

As for the active trigger circuit 702 in the electronic marker 70, it is coupled to the wire Vbus and is arranged near the interface port P1. The active trigger circuit 702 can determine whether a representation occurs according to the power transmission characteristics of the wire Vbus and whether the temperature of the location is too high. Unusual preset event. If it is judged that a preset event representing an abnormality occurs, the active trigger circuit 702 will trigger the protection circuit 701, causing the protection circuit 701 to increase the voltage of the configuration channel wire (Configuration Channel wire, hereinafter referred to as the wire CC) to exceed the preset open circuit voltage, so that The power supply terminal interface port detects that it is not connected when the two interface ports are still actually connected, and then stops the power supply on the wire Vbus, so that the abnormal event will no longer continue.

In addition, the active trigger circuit 702b in the electronic marker 70b is coupled to the wire Vbus and needs to be arranged near the interface port P2. The active trigger circuit 702b can be used according to the power transmission characteristics of the wire Vbus and whether the temperature at the location is too high. To determine whether a preset event representing an abnormality occurs. If it is determined that a predetermined event representing an abnormality occurs, the active trigger circuit 702b will trigger the protection circuit 701b (the active trigger circuit 702b and the trigger protection circuit 701b constitute another active protection module 71b), and the protection circuit 701b will increase the voltage of the wire CC By exceeding the preset open circuit voltage, the power supply terminal interface port detects that it is not connected when the two interface ports are still actually connected, and then stops the power supply on the wire Vbus, so that the abnormal temperature event can be removed.

It can be seen from the above illustrations that the electronic marker 70 and the electronic marker 70b are both electrically connected to the wire CC, so the wire CC is shared for bi-phase mark coded (BMC, bi-phase mark coded) communication. However, in order to reduce the complexity of the circuit and related actions, the configuration channel communication circuit 703 in the electronic marker 70 and the configuration channel communication circuit 703b in the electronic marker 70b in this example are simplified to only support the SOP' response. Need to support SOP", this will make the internal circuit of the electronic marker 70 and the electronic marker 70b simpler.

However, in order to avoid misoperation, the configuration channel communication circuit 703 and the configuration channel communication circuit 703b in this case will be set to operate normally when a specific condition is met. On the contrary, if the specific condition is not met, the configuration channel communication circuit Will be banned. For example, the specific condition is "whether the pins Vconn1 and Vconn2 of the electronic marker are electrically connected to the power supply pin p1c of the interface port P1 and the power supply pin p2c of the interface port P2". Taking this figure as an example, the pins Vconn1 and Vconn2 of the electronic marker 70 are electrically connected to the p1c of the interface port P1 and the p2c of the interface P2, so the configuration channel communication circuit 703 will operate normally, that is, for SOP' The response function is normally turned on. However, the pins Vconn1 and Vconn2 of the electronic marker 70b are not connected to any power source, and the above-mentioned specific conditions are not met. Therefore, the SOP' function of the protection circuit 703b will be disabled. In this way, when the SOP' signal is transmitted on the wire CC, the configuration channel communication circuit 703b whose SOP' function is turned off will not respond, but only the configuration channel communication circuit 703 whose SOP' function is normally turned on will respond. As a result, this setting will effectively avoid malfunctions. In another embodiment, the configuration channel communication circuit 703 and the configuration channel communication circuit 703b of this case can also be set to operate normally when a specific condition is not met. On the contrary, if the specific condition is met, the configuration channel communication circuit Will be banned.

In summary, the present invention enables the electronic marker and cable to have an active power supply safety mechanism. The power management method running on the electronic marker and cable can respond to abnormal power transmission events and actively trigger the protection mechanism to prevent abnormal events. No longer continue, and then suppress abnormal events. Therefore, the electronic marker and cable and the power management method of the present invention are not limited to the passive function under the USB power transfer specification, and they are not only passively responding to the message after receiving the request message of the interface port. Compared with the existing power supply safety mechanism under the USB power transfer specification, the interface ports P1 and P2 need to support the USB power transfer specification. The electronic indicator and cable and the power management method of the present invention are not available even on the interface ports P1 and P2. Supporting the USB power delivery specification can still actively maintain power supply security. Furthermore, the present invention can not only protect the two interface ports connected by the cable, but also protect the cable and the electronic marker itself.

To sum up, although the present invention has been disclosed as above by embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to those defined by the attached patent scope.

10、10b‧‧‧Cable 12‧‧‧Data wire 20, 20b, 702, 702b‧‧‧Active trigger circuit 22‧‧‧Preset event 24a‧‧‧Overvoltage protection event 24b‧‧‧Overcurrent protection event 24c‧‧‧Internal over-temperature protection event 24d; External over-temperature protection event 24e‧‧‧Events reflected by impedance sensing 30, 30b, 701, 701b‧‧‧Protection circuit 40, 40b, 71, 71b‧‧‧Active protection Modules 50, 50b, 703, 703b‧‧‧Configuration channel communication circuit 52,54,52b‧‧‧Isolating components 56,58,56b‧‧‧Impedance 60,60b,70,70b‧‧‧Electronic marker CC, Vbus, GND, Vconn, VconnB‧‧‧Wire P1, P2‧‧‧Interface port p1a-p1d, p2a-p2d‧‧‧Pin n1-n5, G, n1b-n5b, Gb‧‧‧Node 200‧‧‧ Process 202-208‧‧‧Steps E1, E2‧‧‧Internal components Z1, Z2‧‧‧Internal impedance Vcc, vOPEN‧‧‧Voltage Vconn1, Vconn2‧‧‧Pin VCCAH‧‧‧Internal power supply circuit

Figure 1 illustrates a cable and an electronic marker according to an embodiment of the present invention. Figure 2 illustrates a flowchart according to an embodiment of the present invention. Figures 3a to 3c show the operation of the cables, electronic markers and interface ports in Figure 1. Figure 4 shows a cable and an electronic marker according to an embodiment of the present invention. Figure 5 shows a block diagram of a cable and electronic marker circuit according to another embodiment of the present invention. Figure 6 shows a block diagram of a cable and electronic marker circuit according to another embodiment of the present invention. Figure 7 shows a block diagram of a cable and electronic marker circuit according to another embodiment of the present invention.

70, 70b‧‧‧Electronic marker

701, 701b‧‧‧Protection circuit

702、702b‧‧‧Active trigger circuit

703, 703b‧‧‧Configuration channel communication circuit

71, 71b‧‧‧Active Protection Module

Vbus、CC‧‧‧Wire

P1, P2‧‧‧Interface ports

p1a-p1d, p2a-p2d, Vconn1, Vconn2‧‧‧pin

VCCAH‧‧‧Internal power supply circuit

Claims (18)

An electronic marking device is used in a cable electrically connected between a first interface port and a second interface port, the cable includes a configuration channel wire, and the electronic marking device includes: a first electronic marker , Arranged adjacent to the first interface port and electrically connected to a first power supply pin of the first interface port and a second power supply pin of the second interface port, the first electronic indicator includes A first active protection module coupled to the configuration channel wire; and a second electronic marker disposed adjacent to the second interface port, and the second electronic marker includes a wire coupled to the configuration channel A second active protection module, the second electronic marker obtains power from the first electronic marker through an internal power supply line, and any one of the first active protection module and the second active protection module The module changes the electrical characteristics of the configuration channel wire when a preset event occurs, so that the first interface port detects that the second interface port is not connected, or the second interface port detects that the second interface port is not connected. An interface port is not connected, wherein the first electronic marker further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, the first configuration channel communication circuit and the first configuration channel communication circuit When the communication circuit of the second configuration channel is set to meet a specific condition, the communication circuit of the first configuration channel operates normally but the communication circuit of the second configuration channel is disabled. The specific condition is: the second electronic marker passes through the internal The power supply line is used to take power from the first electronic marker. For example, the electronic marking device of item 1 of the scope of patent application, wherein the second active protection module includes a second active trigger circuit and a second protection circuit. When an electronic marker is powered on, the second active trigger circuit determines whether the predetermined event has occurred according to whether the temperature at the location is too high. If the predetermined event is determined to occur, the second active trigger circuit will trigger the The second protection circuit raises the voltage of the configuration channel wire to exceed a predetermined open circuit voltage, so that the first interface port detects that the second interface port is not connected. An electronic marking device is used in a cable electrically connected between a first interface port and a second interface port, the cable includes a configuration channel wire, and the electronic marking device includes: a first electronic marker , Arranged adjacent to the first interface port and electrically connected to a first power supply pin of the first interface port and a second power supply pin of the second interface port, the first electronic indicator includes A first active protection module coupled to the configuration channel wire; and a second electronic marker disposed adjacent to the second interface port, and the second electronic marker includes a wire coupled to the configuration channel A second active protection module, the second electronic marker obtains power from the first electronic marker through an internal power supply line, and any one of the first active protection module and the second active protection module The module changes the electrical characteristics of the configuration channel wire when a preset event occurs, so that the first interface port detects that the second interface port is not connected, or the second interface port detects that the second interface port is not connected. An interface port is not connected, The first electronic marker further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, the first configuration channel communication circuit and the second configuration channel communication circuit are set When a specific condition is satisfied, the communication circuit of the second configuration channel is operating normally but the communication circuit of the first configuration channel is disabled. The specific condition is: the second electronic marker is connected from the first through the internal power supply line. The electronic marker takes power. For example, the electronic marking device of item 3 of the scope of patent application, wherein the second active protection module includes a second active trigger circuit and a second protection circuit. When an electronic marker is powered on, the second active trigger circuit determines whether the predetermined event has occurred according to whether the temperature at the location is too high. If the predetermined event is determined to occur, the second active trigger circuit will trigger the The second protection circuit increases the voltage of the configuration channel wire to exceed the predetermined open circuit voltage, so that the first interface port detects that the second interface port is not connected. An electronic marking device is used in a cable electrically connected between a first interface port and a second interface port, the cable includes a configuration channel wire, and the electronic marking device includes: a first electronic marker , Arranged adjacent to the first interface port and electrically connected to a first power supply pin of the first interface port and a second power supply pin of the second interface port, the first electronic indicator includes A first active protection module coupled to the configuration channel wire; and A second electronic marker is disposed adjacent to the second interface port, and the second electronic marker includes a second active protection module coupled to the configuration channel wire, and the first active protection module and Any one of the second active protection modules will change the electrical characteristics of the configuration channel wire when a preset event occurs, so that the first interface port detects that the second interface port is not connected, or Make the second interface port detect that the first interface port is not connected, wherein the first electronic marker further includes a first configuration channel communication circuit, and the second electronic marker further includes a second configuration channel communication circuit , The first configuration channel communication circuit and the second configuration channel communication circuit are set to operate normally when a specific condition is satisfied, and the specific condition is: the first electronic marker is electrically connected to the first interface port A power supply pin and the second power supply pin of the second interface port or the second electronic marker are electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port When the pin does not meet the specific condition, the communication circuit of the first or second configuration channel will be disabled. An electronic marking device is used in a cable electrically connected between a first interface port and a second interface port, the cable includes a configuration channel wire, and the electronic marking device includes: a first electronic marker , Arranged adjacent to the first interface port and electrically connected to a first power supply pin of the first interface port and a second power supply pin of the second interface port, the first electronic indicator includes A first active protection module coupled to the configuration channel wire; and a second electronic marker disposed adjacent to the second interface port, and the second electronic marker includes a wire coupled to the configuration channel A second active protection module, and any one of the first active protection module and the second active protection module will be When a preset event occurs, the electrical characteristics of the configuration channel wire are changed so that the first interface port detects that the second interface port is not connected, or the second interface port detects that the first interface port is not connected. Hook up, wherein the first electronic marker further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, and the first configuration channel communication circuit communicates with the second configuration channel The circuit is set to operate normally when a specific condition is not met. The specific condition is: the first electronic marker is electrically connected to the first power supply pin of the first interface port and the second interface port of the second interface. The power supply pin or the second electronic indicator is electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port. When the specific condition is met, the first Or the communication circuit of the second configuration channel will be disabled. A cable is electrically connected between a first interface port and a second interface port. The cable includes: a configuration channel wire; a first electronic marker arranged adjacent to the first interface port and electrically connected to each other A first power supply pin that is sexually connected to the first interface port and a second power supply pin of the second interface port, the first electronic marker includes a first active wire coupled to the configuration channel A protection module; and a second electronic marker disposed adjacent to the second interface port, the second electronic marker includes a second active protection module coupled to the configuration channel wire, the second electronic The marker obtains power from the first electronic marker through an internal power supply line, and any one of the first active protection module and the second active protection module will change the Configure the electrical characteristics of the channel wire so that the first An interface port detects that the second interface port is not connected, or causes the second interface port to detect that the first interface port is not connected, wherein the first electronic marker further includes a first configuration channel communication circuit The second electronic marker further includes a second configuration channel communication circuit. When the first configuration channel communication circuit and the second configuration channel communication circuit are set to meet a specific condition, the first configuration channel communication circuit operates normally However, the communication circuit of the second configuration channel is disabled, and the specific condition is: the second electronic marker obtains power from the first electronic marker through an internal power supply line. For example, the cable of item 7 of the scope of patent application, wherein the second active protection module includes a second active trigger circuit and a second protection circuit. When the electronic marker is powered on, the second active trigger circuit determines whether the preset event occurs according to whether the temperature at the location is too high, and if it is determined that the preset event occurs, the second active trigger circuit will trigger the second Two protection circuits increase the voltage of the configuration channel wire to exceed a predetermined open circuit voltage, so that the first interface port detects that the second interface port is not connected. A cable is electrically connected between a first interface port and a second interface port. The cable includes: a configuration channel wire; a first electronic marker arranged adjacent to the first interface port and electrically connected to each other A first power supply pin that is sexually connected to the first interface port and a second power supply pin of the second interface port, the first electronic marker includes a first active wire coupled to the configuration channel Protection module; and A second electronic marker is disposed adjacent to the second interface port, the second electronic marker includes a second active protection module coupled to the configuration channel wire, and the second electronic marker passes through an internal The power supply line is used to take power from the first electronic marker, and any one of the first active protection module and the second active protection module will change the electrical power of the configuration channel wire when a preset event occurs. Feature, so that the first interface port detects that the second interface port is not connected, or the second interface port detects that the first interface port is not connected, wherein the first electronic marker further includes a The first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, when the first configuration channel communication circuit and the second configuration channel communication circuit are set to meet a specific condition, the second The configuration channel communication circuit is operating normally but the first configuration channel communication circuit is disabled. The specific condition is: the second electronic marker obtains power from the first electronic marker through the internal power supply line. For example, the cable of item 9 of the scope of patent application, wherein the second active protection module includes a second active trigger circuit and a second protection circuit. When the electronic marker is powered on, the second active trigger circuit determines whether the preset event occurs according to whether the temperature at the location is too high, and if it is determined that the preset event occurs, the second active trigger circuit will trigger the second Two protection circuits increase the voltage of the configuration channel wire to exceed a predetermined open circuit voltage, so that the first interface port detects that the second interface port is not connected. A cable is electrically connected between a first interface port and a second interface port, the cable includes: a configuration channel wire; A first electronic marker is disposed adjacent to the first interface port and electrically connected to a first power supply pin of the first interface port and a second power supply pin of the second interface port, the first The electronic marker includes a first active protection module coupled to the configuration channel wire; and a second electronic marker disposed adjacent to the second interface port, and the second electronic marker includes a coupling A second active protection module in the configuration channel wire, and any one of the first active protection module and the second active protection module will change the configuration channel wire when a preset event occurs Electrical characteristics, so that the first interface port detects that the second interface port is not connected, or the second interface port detects that the first interface port is not connected, wherein the first electronic marker further includes A first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, the first configuration channel communication circuit and the second configuration channel communication circuit are set to operate normally when a specific condition is met The specific condition is that the first electronic marker is electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port or the second electronic marker is electrically connected When the first power supply pin to the first interface port and the second power supply pin to the second interface port do not meet the specific condition, the first or second configuration channel communication circuit will be disabled . A cable is electrically connected between a first interface port and a second interface port. The cable includes: a configuration channel wire; a first electronic marker arranged adjacent to the first interface port and electrically connected to each other Is sexually connected to a first power supply pin of the first interface port and a second power supply pin of the second interface port Electrical pins, the first electronic marker includes a first active protection module coupled to the configuration channel wire; and a second electronic marker disposed adjacent to the second interface port, the second electronic The marker includes a second active protection module coupled to the configuration channel wire, and any one of the first active protection module and the second active protection module will occur in a predetermined event Change the electrical characteristics of the configuration channel wire so that the first interface port detects that the second interface port is not connected, or the second interface port detects that the first interface port is not connected, wherein the The first electronic marker further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, the first configuration channel communication circuit and the second configuration channel communication circuit are set to Normal operation when a specific condition is not met, the specific condition is: the first electronic marker is electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port or the The second electronic indicator is electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port. When the specific condition is met, the first or the second configuration The channel communication circuit will be disabled. A power management method applied to a cable. The cable includes a configuration channel wire and is electrically connected between a first interface port and a second interface port. The method includes the following steps: The marker changes the electrical characteristics of the configuration channel wire in response to a first predetermined event occurring adjacent to the first interface port, so that the first interface port detects that the second interface port is not connected; and Make a second electronic marker change the electrical characteristics of the configuration channel wire in response to a second predetermined event occurring adjacent to the second interface port, so that the first interface port detects that the second interface port is not connected , Wherein the first electronic marker to which the method is applied further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, the first configuration channel communication circuit and the When the second configuration channel communication circuit is set to meet a specific condition, the first configuration channel communication circuit is operating normally but the second configuration channel communication circuit is disabled. The specific condition is: the second electronic marker passes through a The internal power supply circuit is used to obtain power from the first electronic marker. For example, the power management method of item 13 of the scope of patent application, the second electronic marker applied to it includes a second active trigger circuit and a second protection circuit, and the above method further includes the following steps: When the second electronic marker takes power from the first electronic marker through the internal power supply line, the second active trigger circuit determines whether the preset event has occurred according to whether the temperature at the location is too high. In a predetermined event, the second active trigger circuit will trigger the second protection circuit to increase the voltage of the configuration channel wire to exceed a predetermined open circuit voltage, so that the first interface port detects that the second interface port is unavailable. Hook up. A power management method applied to a cable. The cable includes a configuration channel wire and electrically connected between a first interface port and a second interface port. The method includes the following steps: Make a first electronic marker change the electrical characteristics of the configuration channel wire in response to a first predetermined event occurring adjacent to the first interface port, so that the first interface port detects that the second interface port is not connected And making a second electronic marker change the electrical characteristics of the configuration channel wire in response to a second predetermined event adjacent to the second interface port, so that the first interface port detects that the second interface port is not Hook, wherein the first electronic marker to which the method is applied further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, the first configuration channel communication circuit When the communication circuit with the second configuration channel is set to meet a specific condition, the second configuration channel communication circuit is operating normally but the first configuration channel communication circuit is disabled. The specific condition is: the second electronic marker is The power is taken from the first electronic indicator through the internal power supply line. For example, the power management method of item 15 of the scope of patent application, the second electronic marker applied to it includes a second active trigger circuit and a second protection circuit, and the above method further includes the following steps: When the second electronic marker takes power from the first electronic marker through the internal power supply line, the second active trigger circuit determines whether the preset event has occurred according to whether the temperature at the location is too high. In a predetermined event, the second active trigger circuit will trigger the second protection circuit to increase the voltage of the configuration channel wire to exceed a predetermined open circuit voltage, so that the first interface port detects that the second interface port is unavailable. Hook up. A power management method applied to a cable. The cable includes a configuration channel wire and is electrically connected between a first interface port and a second interface port. The method includes the following steps: The marker changes the electrical characteristics of the configuration channel wire in response to a first predetermined event occurring adjacent to the first interface port, so that the first interface port detects that the second interface port is not connected; and makes a second interface port unconnected; The two electronic markers change the electrical characteristics of the configuration channel wire in response to the occurrence of a second predetermined event adjacent to the second interface port, so that the first interface port detects that the second interface port is not connected, wherein the The first electronic marker to which the method is applied further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, and the above method further includes the following steps: the first configuration The channel communication circuit and the second configuration channel communication circuit are set to operate normally when a specific condition is satisfied, and the specific condition is: the first electronic marker is electrically connected to the first power supply pin of the first interface port and When the second power supply pin of the second interface port or the second electronic indicator is electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port, when not When the specific condition is met, the first or second configuration channel communication circuit will be disabled. A power management method applied to a cable. The cable includes a configuration channel wire and electrically connected between a first interface port and a second interface port. The method includes the following steps: Make a first electronic marker change the electrical characteristics of the configuration channel wire in response to a first predetermined event occurring adjacent to the first interface port, so that the first interface port detects that the second interface port is not connected And making a second electronic marker change the electrical characteristics of the configuration channel wire in response to a second predetermined event adjacent to the second interface port, so that the first interface port detects that the second interface port is not Hooking, wherein the first electronic marker to which the method is applied further includes a first configuration channel communication circuit, the second electronic marker further includes a second configuration channel communication circuit, and the above method further includes the following steps : The first configuration channel communication circuit and the second configuration channel communication circuit are set to operate normally when a specific condition is not met, and the specific condition is: the first electronic marker is electrically connected to the first interface port The first power supply pin and the second power supply pin of the second interface port or the second electronic marker are electrically connected to the first power supply pin of the first interface port and the second power supply pin of the second interface port When the power supply pin meets the specific condition, the communication circuit of the first or second configuration channel will be disabled.

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