WO2022181000A1 - 電子機器、接続機器、機器システム、及び、制御方法 - Google Patents
電子機器、接続機器、機器システム、及び、制御方法 Download PDFInfo
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- WO2022181000A1 WO2022181000A1 PCT/JP2021/046469 JP2021046469W WO2022181000A1 WO 2022181000 A1 WO2022181000 A1 WO 2022181000A1 JP 2021046469 W JP2021046469 W JP 2021046469W WO 2022181000 A1 WO2022181000 A1 WO 2022181000A1
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- terminals
- power
- terminal
- power supply
- electronic device
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- 238000000034 method Methods 0.000 title claims description 21
- 238000001514 detection method Methods 0.000 claims abstract description 169
- 238000012545 processing Methods 0.000 description 27
- 238000006243 chemical reaction Methods 0.000 description 17
- 239000003990 capacitor Substances 0.000 description 14
- 238000004891 communication Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 230000007257 malfunction Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 3
- 241000699670 Mus sp. Species 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000013403 standard screening design Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Definitions
- the present disclosure generally relates to electronic devices, connected devices, device systems, and control methods.
- Patent Document 1 discloses an input/output circuit, a connector, a power supply circuit, and an internal processing circuit mounted on a smart phone, which is a type of electronic device.
- the input/output circuit includes a power detection circuit, an identification terminal voltage detection circuit, and a control section.
- the power supply detection circuit detects external power supply to the power supply terminal.
- the control unit identifies the accessory device (connected device) connected to the connector based on the detection result by the identification terminal voltage detection circuit and the detection result by the power supply detection circuit.
- the identification terminal voltage detection circuit can narrow down the accessory device candidates based on the presence or absence of power supply detected by the power supply detection circuit.
- accessory device candidates can be narrowed down based on the presence or absence of power supply detected by a power supply detection circuit.
- the voltage value of the power supplied to the accessory device cannot be changed according to the accessory device.
- the present disclosure provides an electronic device, a connected device, a device system, and a control method that can set the voltage value of the DC supply power supplied from the electronic device to the connected device to a value corresponding to the connected device.
- An electronic device includes a connector and a power supply circuit.
- the connector has a plurality of first terminals.
- the plurality of first terminals are connected to the plurality of second terminals of the connected device, respectively, and include one or more power supply terminals for supplying DC power to the connected device, and a detection terminal.
- the power supply circuit determines whether or not the second terminal connected to the detection terminal among the plurality of second terminals is a specific terminal when the connected device is connected to the connector, and sets based on the determination result. DC supply power having the voltage value determined is supplied to the connected device via one or more power terminals of the connector.
- a connection device has a plurality of second terminals that are respectively connected to the plurality of first terminals of the connector of the electronic device of the above aspect.
- the plurality of second terminals comprises: one or more input terminals connected to the one or more power terminals for receiving the DC power supply from the electronic device; and electrically isolated from the one or more input terminals and the and an identification terminal connected to the detection terminal as the specific terminal.
- a device system includes the electronic device of the aspect described above and a connection device connected to the electronic device.
- the connection device has a plurality of second terminals that are respectively connected to a plurality of first terminals of a connector of the electronic device.
- the plurality of second terminals are connected to one or more power supply terminals and connected to one or more input terminals for receiving the DC power supply from the electronic device, and electrically separated from the one or more input terminals and connected to detection terminals. and an identification terminal connected as a terminal.
- a control method is a control method for supplying DC supply power from an electronic device to a connection device connected to the electronic device.
- the electronic device has a plurality of first terminals, the plurality of first terminals are connected to the plurality of second terminals of the connected device, respectively, and one or more power supply terminals for supplying DC power to the connected device and detection a connector including terminals;
- the control method includes determining whether or not the second terminal connected to the detection terminal among the plurality of second terminals is a specific terminal when the connected device is connected to the connector, and based on the determination result. supplying a DC power supply having a voltage value set by the connector through one or more power terminals of the connector to the connected equipment.
- the voltage value of the DC supply power supplied from the electronic device to the connected device can be set to a value corresponding to the connected device.
- FIG. 1 is a block diagram of a configuration example of a device system including electronic devices and connection devices according to an embodiment
- FIG. FIG. 2 is a schematic diagram with a part omitted of a configuration example of a connector of the electronic device of FIG. 1
- FIG. 2 is a schematic diagram with a part omitted of a configuration example of a connector of the connection device in FIG. 1
- FIG. 2 is an explanatory diagram of an example of the operation of the power supply circuit in the device system of FIG. 1
- FIG. 2 is a block diagram of a configuration example of a device system including the electronic device of FIG. 1 and a connection device different from the connection device of FIG. 1
- FIG. 6 is an explanatory diagram of an example of the operation of the power supply circuit in the device system of FIG. 5
- 2 is a flowchart of an example of the operation of the electronic device of FIG. 1;
- FIG. 1 is block diagrams of configuration examples of device systems 1 and 1A each including an electronic device 10 according to one embodiment.
- the device system 1 of FIG. 1 includes an electronic device 10 and a connection device 20, and the device system 1A of FIG. 5 includes the electronic device 10 and a connection device 20A.
- the connection device 20 and the connection device 20A can be alternatively connected to the electronic device 10 .
- the electronic device 10 can be used independently.
- Electronic device 10 is a tablet personal computer in the present embodiment, but is not limited to this.
- Examples of the electronic device 10 include general electronic devices such as laptop personal computers, smart phones, tablet terminals, wearable terminals, and game machines.
- the electronic device 10 includes a connector 11 and a power supply circuit 12.
- the connector 11 has multiple first terminals 110 .
- the multiple first terminals 110 are connected to the multiple second terminals 210 of the connection devices 20 and 20A, respectively.
- the plurality of first terminals 110 includes one or more (two in FIG. 1) power supply terminals 111 for supplying DC power to the connection device 20 and detection terminals 112 .
- the power supply circuit 12 determines whether the second terminal 210 connected to the detection terminal 112 among the plurality of second terminals 210 is a specific terminal. DC supply power having a voltage value determined based on the result is supplied to the connected device 20 via one or more power terminals 111 of the connector 11 .
- the electronic device 10 includes a detection terminal 112 on the connector 11 connected to the connection device 20 or the connection device 20A, and based on the result of determination whether the second terminal 210 connected to the detection terminal 112 is a specific terminal. to determine the voltage value of the DC supply power to be supplied to the connected devices 20 and 20A.
- the voltage value of the DC supply power supplied from the electronic device 10 to the connected device is set to a value corresponding to the connected device (the connected device 20 or the connected device 20A). Can be set.
- connection device 20 and the connection device 20A are connected to the electronic device 10.
- the connection device 20 and the connection device 20A are used more effectively while connected to the electronic device 10 than when used alone. If the electronic device 10 is the main body, the connection device 20 and the connection device 20A correspond to peripheral devices.
- the connection device 20 and the connection device 20A are, for example, port replicators (also called cradles and docking stations).
- the connection device 20 and the connection device 20A are of the same type (a port replicator in this embodiment), but the connection device 20 is a new model and the connection device 20A is an old model.
- the connected device 20 can use DC supply power higher than that used by the connected device 20A.
- connection device 20 and the connection device 20A are port replicators in this embodiment, but are not limited to this.
- connection device 20 may be peripheral devices that can be connected to general electronic devices such as personal computers, smart phones, tablet terminals, wearable terminals, and game machines.
- peripheral devices include input/output devices such as pointing devices (keyboards, mice, etc.), display devices (displays, projectors, etc.), audio devices (speakers, sound bars, etc.), and communication devices (antennas).
- the connection device 20 has a plurality of second terminals 210 to be connected to the plurality of first terminals 110 of the connector 11 of the electronic device 10, respectively.
- the plurality of second terminals 210 includes one or more (two in FIG. 1) input terminals 211 for receiving DC supply power from the electronic device 10 connected to one or more power supply terminals 111, and one or more input terminals 211 and an identification terminal 212 electrically isolated from and connected to the detection terminal 112 as a specific terminal.
- connection device 20 includes identification terminals 212 that are connected to the plurality of second terminals 210 connected to the electronic device 10 and to the detection terminals 112 as specific terminals.
- the voltage value of the DC supply power supplied from the electronic device 10 to the connected device 20 can be set to a value corresponding to the connected device 20 .
- the device system 1 will be described below with reference to FIGS. 1 to 7.
- FIG. The device system 1 includes an electronic device 10 and a connection device 20, as shown in FIG.
- the electronic device 10 includes a connector 11, a power supply circuit 12, a processing unit 13, an input/output unit 14, a battery 15, a power supply circuit 16, a power conversion circuit 17, and external connection terminals. 18 and a feed line 19 .
- the connector 11 is used to connect the electronic device 10 and the connection device 20 or the connection device 20A. In other words, the connector 11 enables the connection device 20 or the connection device 20A to be connected to the electronic device 10 .
- the connector 11 includes multiple first terminals 110 .
- the plurality of first terminals 110 includes one or more (two in FIG. 1) power supply terminals 111, detection terminals 112, one or more (three in FIG. 1) power receiving terminals 113, and a pair of ground terminals 114.
- the power supply terminal 111 is used to supply the connected device 20 with DC supply power having a voltage value corresponding to the connected device 20 .
- the detection terminal 112 is used for detecting the type of the connected device 20 .
- the power receiving terminal 113 is used to receive DC power with a specified voltage value from the connected device 20 .
- the prescribed voltage value is, for example, 16V.
- the plurality of first terminals 110 includes one or more terminals for detecting connection of the connection device 20 or the connection device 20A, one or more terminals for detecting connection of the electronic device 10, and one or more communication terminals. and a separate plurality of ground terminals.
- Terminals for communication include terminals for UART communication and USB communication.
- FIG. 2 is a schematic diagram omitting a part of a configuration example of the connector 11 of the electronic device 10 of FIG.
- FIG. 2 shows two power terminals 111 , a detection terminal 112 , three power receiving terminals 113 and two ground terminals 114 among the plurality of first terminals 110 .
- the two power supply terminals 111, the detection terminal 112, the three power receiving terminals 113, and the pair of ground terminals 114 are contact terminals shaped to be connected to the corresponding second terminals 210 by contact.
- the two power supply terminals 111, the detection terminal 112, the three power receiving terminals 113, and the pair of ground terminals 114 are rectangular flat plates.
- Two power supply terminals 111, a detection terminal 112, three power receiving terminals 113, and two ground terminals 114 are arranged in a line.
- the width direction (horizontal direction in FIG. 2) of the power supply terminal 111, the detection terminal 112, and the power reception terminal 113 matches the direction in which the power supply terminal 111, the detection terminal 112, and the power reception terminal 113 are arranged (horizontal direction in FIG. 2).
- the distance d between the power terminal 111 , the detection terminal 112 and the power receiving terminal 113 is narrower than the width w of the power terminal 111 , the detection terminal 112 and the power receiving terminal 113 .
- the two power supply terminals 111 , the detection terminal 112 and the three power reception terminals 113 are arranged in a line such that the detection terminal 112 is positioned between the two power supply terminals 111 and the three power reception terminals 113 .
- the plurality of first terminals 110 includes a pair of ground terminals 114.
- the pair of ground terminals 114 includes two power supply terminals 111, a detection terminal 112, and three power reception terminals 113 arranged in a line. located on both sides of the
- all the first terminals 110 are contact terminals shaped to be connected to the corresponding second terminals 210 by contact, and the width direction of all the first terminals 110 is the width of the first terminals 110.
- the spacing d between the first terminals 110 is narrower than the width w of each first terminal 110 .
- the external connection terminal 18 is used to connect an external power source to the electronic device 10 .
- the external power supply is, for example, an AC adapter that converts AC power from a commercial AC power supply into DC power with a specified voltage value. As described above, the specified voltage value is 16V, for example.
- the power supply line 19 is used to send DC power with a specified voltage value inside the electronic device 10 .
- the power supply line 19 is connected to the power receiving terminal 113 of the connector 11 and the external connection terminal 18 . Therefore, the power supply line 19 can receive DC power of a specified voltage value from the power receiving terminal 113 of the connector 11 and the external connection terminal 18 .
- the power supply path 19 is provided with a diode D11 for preventing backflow from the power supply path 19 to the power receiving terminal 113 and a diode D12 for preventing backflow from the power supply path 19 to the external connection terminal 18. .
- the processing unit 13 and the input/output unit 14 determine the functions of the electronic device 10 .
- the configurations of the processing unit 13 and the input/output unit 14 are determined according to the functions required of the electronic device 10 . That is, the processing unit 13 and the input/output unit 14 are appropriately selected according to functions required in the electronic device 10 .
- the processing unit 13 includes a processing circuit 131 , a storage device 132 and a communication circuit 133 .
- the processing circuit 131 includes circuit elements capable of executing specific processing, such as a CPU, microcomputer, HUB, and video conversion IC.
- Storage 132 includes non-transitory computer readable storage such as hard disks, SSDs, secondary storage such as CD-ROMs, or other forms of RAM or ROM.
- the communication circuit 133 includes a wireless communication module and the like.
- the input/output unit 14 includes a display 141, a camera 142, and a connector 143.
- the input/output unit 14 is not limited to these.
- Examples of the connector 143 include a LAN cable connector and a connector conforming to the USB standard.
- the battery 15 is used to operate the electronic device 10.
- the battery 15 can be charged and discharged.
- battery 15 is removable. Therefore, the electronic device 10 may not include the battery 15 as a component.
- the power supply circuit 16 controls charging and discharging of the battery 15 .
- the power supply circuit 16 charges the battery 15 based on the DC power of the specified voltage value obtained from the power supply line 19 .
- the power supply circuit 16 converts the DC power from the battery 15 into DC power of a specified voltage value and supplies the power supply line 19 with the DC power.
- the power conversion circuit 17 generates DC power with a voltage value (for example, 5 V) required by the processing unit 13 based on the DC power with a specified voltage value obtained from the power supply line 19, and outputs the DC power to the processing unit 13. .
- the power conversion circuit 17 generates DC power with a voltage value (for example, 5 V, 9 V, 15 V, etc.) required by the input/output unit 14 based on the DC power with a specified voltage value obtained from the power supply line 19, Output to the input/output unit 14 .
- the power conversion circuit 17 includes a plurality of DC/DC converters 171 so as to support different voltage values required by the processing section 13 and the input/output section 14 .
- the “DC/DC converter” is simply written as “DC/DC” for simplification of the drawing.
- the power supply circuit 12 is used to supply DC power with a voltage value corresponding to the connected device 20 or the connected device 20A from the electronic device 10 to the connected device 20 or the connected device 20A.
- the power supply circuit 12 supplies DC power to the connected device 20 or the connected device 20A connected to the connector 11 based on the DC power of the specified voltage value obtained from the power supply line 19 .
- the power supply circuit 12 can select the voltage value of the DC supply power from a first voltage value and a second voltage value.
- the first voltage value is less than the specified voltage value.
- the first voltage value is, for example, 5V.
- the second voltage value is greater than the first voltage value.
- the second voltage value is, for example, equal to the prescribed voltage value.
- the first voltage value corresponds to the voltage value of DC power supplied to connected device 20A
- the second voltage value corresponds to the voltage value of DC power supplied to connected device 20A.
- the power supply circuit 12 sets the voltage value of the DC supply power to the first voltage value, and the second terminal 210 connected to the detection terminal 112 is the specific terminal, the voltage value of the DC power supply is set to the second voltage value.
- the specific terminal is a terminal among the plurality of second terminals 210 that the connection device 20 has but the connection device 20A does not have.
- the identification terminal 212 of the connection device 20 is used as the specific terminal.
- the power supply circuit 12 determines whether the second terminal 210 connected to the detection terminal 112 is a specific terminal based on the voltage value of the detection terminal 112 .
- the power supply circuit 12 includes a voltage switching circuit 121 and a detection circuit 122, as shown in FIG.
- the voltage switching circuit 121 switches the voltage value of the DC supply power output from the power terminal 111 of the connector 11 between a first voltage value and a second voltage value.
- the voltage switching circuit 121 in FIG. 1 includes a DC/DC converter 121a and a switch 121b.
- the DC/DC converter 121 a generates DC supply power with a first voltage value based on the DC power with a specified voltage value obtained from the power supply line 19 and outputs the DC power supply to the power supply terminal 111 .
- the switch 121b is connected between the power feed line 19 and the power terminal 111 .
- the power supply circuit 12 includes a diode D13 for preventing reverse current from the power supply terminal 111 to the switch 121b of the voltage switching circuit 121, and a diode D13 for preventing reverse current from the power supply terminal 111 to the DC/DC converter 121a of the voltage switching circuit 121. and a protective diode D14.
- the detection circuit 122 detects the voltage applied to the detection terminal 112 .
- the detection circuit 122 controls the voltage switching circuit 121 based on the voltage value of the detection terminal 112 to switch the voltage value of the DC supply power. More specifically, the detection circuit 122 switches the switch 121 b of the voltage switching circuit 121 on/off based on the voltage value of the detection terminal 112 .
- the detection circuit 122 includes a control circuit 122a, resistors R11 and R12, and a capacitor C11. A series circuit of resistor R11 and capacitor C11 is connected between internal power supply V11 and ground.
- the internal power supply V11 is, for example, any DC/DC converter 171 of the power conversion circuit 17.
- Resistor R12 is connected between the connection point of resistor R11 and capacitor C11 and detection terminal 112 .
- the control circuit 122 a detects the voltage value of the voltage across the capacitor C 11 as the voltage value of the voltage applied to the detection terminal 112 .
- the control circuit 122a compares the voltage value of the detection terminal 112 with a threshold.
- the threshold value is greater than the voltage across the capacitor C11 when the detection terminal 112 is connected to an identification terminal 212, which will be described later, and is greater than the voltage across the capacitor C11 when the detection terminal 112 is open or the input terminal 211 is connected.
- the control circuit 122a turns off the switch 121b when the voltage value of the detection terminal 112 is greater than or equal to the threshold, and turns on the switch 121b when the voltage value of the detection terminal 112 is less than the threshold.
- the detection circuit 122 turns off the switch 121b in the initial state.
- connection device 20 and the connection device 20A will be described with reference to FIGS. 1 and 5.
- FIG. As described above, in the present embodiment, the connection device 20 and the connection device 20A are port replicators, the connection device 20 is the new model, and the connection device 20A is the old model.
- connection device 20 As shown in FIG. 1, the connection device 20 includes a connector 21, a power supply line 22, a processing unit 23, an input/output unit 24, a control circuit 25, power conversion circuits 26 and 27, and an external connection terminal 28. , and the feed line 29 .
- the connector 21 is used for connection with the electronic device 10 .
- connector 21 includes a plurality of second terminals 210 .
- the plurality of second terminals 210 includes one or more (two in FIG. 1) input terminals 211, an identification terminal 212, one or more (three in FIG. 1) output terminals 213, and a pair of ground terminals 214.
- the input terminal 211 is used to receive DC supply power having a voltage value corresponding to the connected device 20 (the second voltage value described above) from the electronic device 10 .
- the identification terminal 212 is electrically separated from the input terminal 211 and connected to the detection terminal 112 as a specific terminal.
- the identification terminal 212 is used by the electronic device 10 to identify the connected device.
- the identification terminal 212 is connected to ground through a resistor R21.
- the output terminal 213 is used to output DC power with a specified voltage value to the electronic device 10 .
- the plurality of second terminals 210 includes one or more terminals for detecting connection of the connection devices 20 and 20A, one or more terminals for detecting connection of the electronic device 10, and one or more communication terminals. A terminal and another plurality of ground terminals may be included. Terminals for communication include terminals for UART communication and USB communication.
- the connection device 20 is a port replicator, so the connector 21 may have a structure that mechanically holds the electronic device 10 .
- FIG. 3 is a schematic diagram of a configuration example of the connector 21 of the connection device 20 of FIG. 1, partly omitted.
- FIG. 3 shows two input terminals 211 , an identification terminal 212 , three output terminals 213 and two ground terminals 214 among the plurality of first terminals 110 .
- the two input terminals 211, the identification terminal 212, the three output terminals 213, and the pair of ground terminals 214 are contact terminals shaped to be connected to the corresponding first terminals 110 by contact.
- the two input terminals 211, the identification terminal 212, the three output terminals 213, and the pair of ground terminals 214 are mountain-shaped spring terminals in a side view.
- the two input terminals 211, the identification terminal 212, the three output terminals 213, and the pair of ground terminals 214 are connected to the two power supply terminals 111, the detection terminal 112, the three power receiving terminals 113, and the pair of ground terminals 114, respectively. Contact is made with a predetermined contact pressure, and the contact state between them is preferably maintained.
- the two input terminals 211, the identification terminal 212, the three output terminals 213, and the pair of ground terminals 214 are rectangular in plan view.
- Two input terminals 211, an identification terminal 212, three output terminals 213, and two ground terminals 214 are arranged in a row.
- the width direction of the input terminal 211, the identification terminal 212, and the output terminal 213 (horizontal direction in FIG.
- the distance d between the input terminal 211 , the identification terminal 212 and the output terminal 213 is narrower than the width w of the input terminal 211 , the identification terminal 212 and the output terminal 213 .
- the identification terminal 212 is adjacent to one or more input terminals 211 . More specifically, two input terminals 211 , an identification terminal 212 and three output terminals 213 are arranged in a line such that the identification terminal 212 is positioned between the two input terminals 211 and the three output terminals 213 .
- the plurality of second terminals 210 includes a pair of ground terminals 214, which includes two input terminals 211, an identification terminal 212, and three output terminals 213 in a row. located on both sides of the
- all the second terminals 210 are contact terminals that are connected to the corresponding first terminals 110 by contact, and the width direction of all the second terminals 210 is The interval d between the second terminals 210 is narrower than the width w of each second terminal 210 . Since the connector 11 of the electronic device 10 and the connector 21 of the connection device 20 are connected to each other, the width w of the second terminal 210 and the interval d of the second terminal 210 are equal to the width w of the first terminal 110 and the first terminal 110 intervals d, respectively.
- the external connection terminal 28 is used to connect an external power supply to the connection device 20 .
- the external power supply is, for example, an AC adapter that converts AC power from a commercial AC power supply into DC power with a specified voltage value. As described above, the specified voltage value is 16V, for example.
- the power supply line 22 is an electric line through which the DC supply power supplied from the electronic device 10 is sent inside the connection device 20 .
- the feed line 22 is connected to the input terminal 211 of the connector 21 . Therefore, the feed line 22 can receive the DC power supply from the input terminal 211 of the connector 21 .
- the electronic device 10 supplies the connected device 20 with the DC supply power of the second voltage value. Therefore, the power supply line 22 is an electric line through which the DC supply power of the second voltage value supplied from the electronic device 10 is sent inside the connected device 20 .
- the power supply line 29 is an electric line for sending DC power with a specified voltage value inside the connected device 20 .
- the feed line 29 is connected to the external connection terminal 28 . Therefore, the power supply line 29 can receive the DC power of the specified voltage value from the external connection terminal 28 .
- the power supply line 22 is connected to the power supply line 29 via a diode D22 for preventing backflow from the power supply line 29 to the power supply line 22 .
- a switch S21 is connected between the external connection terminal 28 and the output terminal 213 in the power supply line 29 .
- the power supply line 29 is provided with a diode D21 for preventing backflow so that the current from the power supply line 22 does not flow into the switch S21.
- the processing unit 23 and the input/output unit 24 determine the function of the connection device 20.
- the processing unit 23 and the input/output unit 24 are appropriately selected according to the functions required in the connection device 20 .
- the processing unit 23 includes multiple processing circuits 231 .
- the processing circuit 231 includes circuit elements capable of executing specific processing, such as a CPU, microcomputer, HUB, and video conversion IC.
- the input/output unit 24 includes a connector 241 .
- the input/output unit 24 is not limited to this configuration. Examples of the connector 241 include an HDMI (registered trademark) connector and a connector conforming to the USB standard.
- the control circuit 25 controls the switch S21.
- the control circuit 25 detects the connection of the electronic device 10 while receiving DC power of a specified voltage value from the external power supply via the external connection terminal 28, the control circuit 25 turns on the switch S21.
- the external connection terminal 28 is connected to the electronic device 10 through the output terminal 213 of the connector 21 , and the external power supply connected to the external connection terminal 28 supplies the electronic device 10 with DC power of a specified voltage value.
- Detection of connection of the electronic device 10 is performed using one or more terminals for detecting connection of the electronic device 10 included in the second terminal 210 of the connector 21 .
- the power conversion circuit 26 generates DC power with a voltage value required for the operation of the control circuit 25 based on the DC power with a specified voltage value obtained from the power supply line 29 and outputs the DC power to the control circuit 25 .
- the power conversion circuit 26 is configured by, for example, a DC/DC converter.
- the power conversion circuit 27 generates DC power with a voltage value (for example, 5 V) required by the processing unit 23 based on the DC power with the specified voltage value obtained from the power supply line 22, and outputs the DC power to the processing unit 23. .
- the power conversion circuit 27 generates DC power with a voltage value (for example, 5 V, 9 V, 15 V, etc.) required by the input/output unit 24 based on the DC power with a specified voltage value obtained from the power supply line 22, Output to the input/output unit 24 .
- the power conversion circuit 27 includes a plurality of DC/DC converters 271 so as to support different voltage values required by the processing section 23 and the input/output section 24 .
- connection device 20A includes a connector 21A, a power supply line 22A, a processing unit 23, an input/output unit 24, a control circuit 25, power conversion circuits 26 and 27, and an external connection terminal 28. , and the feed line 29 .
- the connector 21A and the power supply line 22A of the connection device 20A are different from the connector 21 and the power supply line 22 of the connection device 20A.
- the connector 21A is used for connection with the electronic device 10. As shown in FIG. 5 , the connector 21A includes multiple second terminals 210 .
- the plurality of second terminals 210 includes one or more (three in FIG. 5) input terminals 211, one or more (three in FIG. 1) output terminals 213, and a pair of ground terminals 214. does not include an identification terminal 212. More specifically, the connector 21A has an input terminal 211 at a position where the identification terminal 212 is located on the connector 21, so that the number of the input terminals 211 is greater than that of the connector 21.
- the power supply line 22A is an electric line through which the DC supply power supplied from the electronic device 10 is sent inside the connection device 20 .
- the feeder line 22A is connected to the input terminal 211 of the connector 21 . Therefore, the power supply line 22A can receive DC power supply from the input terminal 211 of the connector 21 .
- the electronic device 10 supplies the connected device 20 with DC supply power having a first voltage value. Therefore, the power supply line 22A is an electric line through which the DC supply power of the first voltage value supplied from the electronic device 10 is sent inside the connected device 20 .
- the feed line 22 A is not connected to the feed line 29 .
- the power supply line 22A supplies power to the power conversion circuit 26 .
- FIG. 4 is for explaining the operation of the power supply circuit 12, part of the electronic device 10 and the connection device 20 is omitted.
- FIG. 6 is for explaining the operation of the power supply circuit 12, part of the electronic device 10 and the connection device 20A is omitted.
- the detection circuit 122 of the power feeding circuit 12 turns off the switch 121b of the voltage switching circuit 121.
- the voltage value of the DC supply power that can be supplied from the power supply terminal 111 is set to the first voltage value (S11 in FIG. 7).
- the detection circuit 122 acquires the voltage value of the detection terminal 112 (S12 in FIG. 7), and the voltage value of the detection terminal 112 is less than the threshold. (S13 in FIG. 7).
- the connection device 20 is connected to the electronic device 10
- the detection terminal 112 of the connector 11 is connected to the identification terminal 212 of the connector 21 .
- the resistor R12 of the detection circuit 122 is connected to the resistor R21 through the detection terminal 112 and the identification terminal 212 and grounded.
- a voltage obtained by dividing the voltage of the internal power supply V11 by a voltage dividing circuit consisting of a series circuit of resistors R11, R12, and R21 is applied to the capacitor C11.
- the control circuit 122 a of the detection circuit 122 detects the voltage value of the voltage across the capacitor C 11 as the voltage value of the voltage applied to the detection terminal 112 .
- the control circuit 122a compares the voltage value of the detection terminal 112 with a threshold. As described above, the threshold is greater than the voltage across the capacitor C1 when the identification terminal 212 is connected to the detection terminal 112, and is greater than the voltage across the capacitor C1 when the detection terminal 112 is open or the input terminal 211 is connected. It is set to be smaller than the voltage value across C1.
- the control circuit 122a determines that the voltage value of the detection terminal 112 is less than the threshold (S13 in FIG. 7; YES). In this case, the control circuit 122a turns on the switch 121b, thereby setting the voltage value of the DC supply power that can be supplied from the power supply terminal 111 to the second voltage value (S14 in FIG. 7).
- the detection circuit 122 acquires the voltage value of the detection terminal 112 (S12 in FIG. It is determined whether the voltage value is less than the threshold (S13 in FIG. 7).
- the detection terminal 112 of the connector 11 is connected to the input terminal 211 of the connector 21A. Since the input terminal 211 is connected to the power supply terminal 111 of the connector 11 , the voltage from the voltage switching circuit 121 is applied to the detection terminal 112 . As a result, the voltage from the voltage switching circuit 121 is applied to the capacitor C11.
- the control circuit 122 a of the detection circuit 122 detects the voltage value of the voltage across the capacitor C 11 as the voltage value of the voltage applied to the detection terminal 112 .
- the control circuit 122a compares the voltage value of the detection terminal 112 with a threshold.
- the threshold is greater than the voltage across the capacitor C1 when the identification terminal 212 is connected to the detection terminal 112, and is greater than the voltage across the capacitor C1 when the detection terminal 112 is open or the input terminal 211 is connected. It is set to be smaller than the voltage value across C1. Therefore, the control circuit 122a determines that the voltage value of the detection terminal 112 is equal to or higher than the threshold (S13 in FIG. 7; NO). In this case, the control circuit 122a keeps the switch 121b off, and sets the voltage value of the DC supply power that can be supplied from the power supply terminal 111 to the first voltage value (S15 in FIG. 7).
- the power supply circuit 12 executes a control method for supplying DC power from the electronic device 10 to the connected device 20 or the connected device 20A connected to the electronic device 10 .
- this control method when the connection device (the connection device 20 or the connection device 20A) is connected to the connector 11, the second terminal 210 connected to the detection terminal 112 among the plurality of second terminals 210 is the specific terminal. including determining whether The control method includes supplying DC supply power having a voltage value determined based on the determination result to the connected device (the connected device 20 or the connected device 20A) via one or more power terminals 111 of the connector 11. .
- the voltage value of the DC supply power supplied from the electronic device 10 to the connection device corresponds to the connection device (the connection device 20 or the connection device 20A).
- the voltage value of the DC supply power supplied from the electronic device 10 to the connection device corresponds to the connection device (the connection device 20 or the connection device 20A).
- the connector 11 of the electronic device 10 has multiple first terminals 110 .
- the multiple first terminals 110 include two power supply terminals 111, a detection terminal 112, and three power reception terminals 113, as shown in FIG.
- the power supply terminal 111 is used to supply power to the connection device (the connection device 20 or the connection device 20A). Therefore, it is desirable that the power supply terminal 111 does not come into contact with the first terminal 110 used for another power supply such as the power receiving terminal 113 of the connector 11 or the second terminal 210 that does not correspond to the power supply terminal 111 .
- the detection terminal 112 is adjacent to one or more power supply terminals 111, as shown in FIG.
- the detection terminal 112 is not used to supply power to the connected device (the connected device 20 or the connected device 20A). Therefore, it is possible to use the detection terminal 112 to prevent a short circuit due to contact with the power supply terminal 111 by the first terminal 110 used for another power supply or the second terminal 210 not corresponding to the power supply terminal 111. As a result, it is possible to reduce the possibility of malfunction due to the short circuit of the power supply terminal 111 .
- the detection terminal 112 is positioned between the two power supply terminals 111 and the three power reception terminals 113 . According to this configuration, the distance between the power receiving terminal 113 and the power terminal 111 can be increased.
- the detection terminal 112 prevents the power receiving terminal 113 from reaching the power terminal 111 .
- the possibility of direct or indirect short-circuiting with the power supply terminal 111 can be reduced.
- the possibility of a direct or indirect short circuit between the power receiving terminal 113 and the power terminal 111 can be reduced.
- the power receiving terminal 113 and the power terminal 111 can be separated from each other. can be reduced.
- the connector 21 of the connection device 20 has multiple second terminals 210 .
- the plurality of second terminals 210 includes two input terminals 211, an identification terminal 212 and three output terminals 213, as shown in FIG.
- the input terminal 211 is used to supply power to the connected device 20 . Therefore, it is desirable that the input terminal 211 does not come into contact with the second terminal 210 used for another power supply such as the output terminal 213 of the connector 21 or the first terminal 110 that does not correspond to the input terminal 211 .
- identification terminal 212 is adjacent to one or more input terminals 211 .
- the identification terminal 212 is not used to supply power to the connected device 20 .
- the identification terminal 212 is located between two input terminals 211 and three output terminals 213 . According to this configuration, the distance between the output terminal 213 and the input terminal 211 can be increased. For example, even if the output terminal 213 is damaged and displaced toward the input terminal 211 , the identification terminal 212 prevents the output terminal 213 from reaching the input terminal 211 . Thus, according to the connector 21, the distance between the output terminal 213 and the input terminal 211 can be increased. can be reduced.
- the electronic device 10 described above includes a connector 11 and a power feeding circuit 12 .
- the connector 11 has a plurality of first terminals 110, and the plurality of first terminals 110 are connected to the plurality of second terminals 210 of the connection devices 20 and 20A, respectively, and supplies DC power to the connection devices 20 and 20A. It includes one or more power supply terminals 111 and detection terminals 112 for.
- the power supply circuit 12 determines whether or not the second terminal 210 connected to the detection terminal 112 among the plurality of second terminals 210 is a specific terminal when the connection device 20 or 20A is connected to the connector 11. .
- the power feeding circuit 12 supplies DC power having a voltage value determined based on the determination result to the connected devices 20 and 20A via one or more power terminals 111 of the connector 11 .
- the voltage value of the DC supply power supplied from the electronic device 10 to the connected device can be set to a value corresponding to the connected device (the connected device 20 or the connected device 20A).
- the detection terminal 112 is adjacent to one or more power supply terminals 111 . According to this configuration, the detection terminal 112 is used to prevent a short circuit due to contact with the power supply terminal 111 by the first terminal 110 used for another power supply or the second terminal 210 not corresponding to the power supply terminal 111 . It is possible to reduce the possibility of malfunction due to short circuit of the power supply terminal 111 .
- the plurality of first terminals 110 include one or more power receiving terminals 113 for receiving DC power with a specified voltage value from the connected devices 20 and 20A.
- the one or more power terminals 111 , the detection terminals 112 , and the one or more power receiving terminals 113 are arranged in a line such that the detection terminals 112 are positioned between the one or more power terminals 111 and the one or more power receiving terminals 113 .
- the power receiving terminal 113 and the power terminal 111 can be separated from each other, and the possibility that the power receiving terminal 113 and the power terminal 111 are directly or indirectly short-circuited due to a malfunction of the connector 11 can be reduced. .
- the power supply circuit 12 sets the voltage value of the DC supply power to a first voltage value smaller than the specified voltage value, and the detection terminal 112
- the voltage value of the DC supply power is set to a second voltage value higher than the first voltage value.
- the voltage value of the DC supply power supplied from the electronic device 10 to the connected device can be set to a value corresponding to the connected device (the connected device 20 or the connected device 20A).
- the power supply circuit 12 determines whether the second terminal 210 connected to the detection terminal 112 is a specific terminal. According to this configuration, the voltage value of the DC supply power supplied from the electronic device 10 to the connected device (the connected device 20 or the connected device 20A) can be set to a value corresponding to the connected device (the connected device 20 or the connected device 20A). .
- the electronic device 10 also includes a DC power feed line 19 with a specified voltage value connected to one or more power receiving terminals 113 .
- the power supply circuit 12 supplies DC power to the connected device (the connected device 20 or the connected device 20A) connected to the connector 11 based on the DC power of the specified voltage value obtained from the power supply line 19 . According to this configuration, the DC supply power can be supplied according to the connected device (the connected device 20 or the connected device 20A).
- the power supply circuit 12 has a voltage switching circuit 121 and a detection circuit 122 .
- the voltage switching circuit 121 includes a DC/DC converter 121a that generates DC supply power with a first voltage value based on the DC power with a specified voltage value obtained from the power supply line 19 and outputs the DC power supply to one or more power supply terminals 111, and It has a switch 121 b connected between the feed line 19 and one or more power supply terminals 111 .
- the detection circuit 122 detects the voltage applied to the detection terminal 112 .
- the detection circuit 122 switches ON/OFF of the switch 121 b based on the voltage value of the detection terminal 112 . With this configuration, the configuration of the power supply circuit 12 can be simplified.
- the detection circuit 122 turns off the DC/DC converter 121a and the switch 121b in the initial state. According to this configuration, the voltage of the power supply terminal 111 can be kept low, so power consumption can be improved.
- the electronic device 10 also includes a power supply circuit 16 that charges and discharges a battery 15 for operating the electronic device 10 .
- the power supply circuit 16 charges the battery 15 based on the DC power of the specified voltage value obtained from the power supply line 19 . According to this configuration, the electronic device 10 can be operated by the battery 15 without power supply from the connected device (the connected device 20 or the connected device 20A).
- the plurality of first terminals 110 includes a pair of ground terminals 114 .
- a pair of ground terminals 114 are positioned on both sides of one or more power terminals 111, detection terminals 112, and one or more power receiving terminals 113 arranged in a line. According to this configuration, it is possible to reduce the possibility that the receiving terminal 113 and the power supply terminal 111 are directly or indirectly contacted by the other first terminal 110 or the second terminal 210 not corresponding to them due to a malfunction of the connector 11 or the like. .
- one or more power terminals 111, detection terminals 112, and one or more power receiving terminals 113 are contact terminals shaped to be connected to corresponding second terminals 210 by contact. This configuration facilitates connection between the electronic device 10 and the connection device (the connection device 20 or the connection device 20A).
- the width direction of the one or more power supply terminals 111, the detection terminals 112, and the one or more power reception terminals 113 coincides with the direction in which the one or more power supply terminals 111, the detection terminals 112, and the one or more power reception terminals 113 are arranged.
- the distance between the one or more power supply terminals 111 , the detection terminals 112 and the one or more power reception terminals 113 is narrower than the width of the one or more power supply terminals 111 , the detection terminals 112 and the one or more power reception terminals 113 . According to this configuration, the distance between the power receiving terminal 113 and the power terminal 111 can be increased while the connector 11 is configured compactly. It is possible to reduce the possibility of being short-circuited.
- the connection device 20 described above has a plurality of second terminals 210 to be connected to the plurality of first terminals 110 of the connector 11 of the electronic device 10 respectively.
- the plurality of second terminals 210 are connected to one or more power terminals 111 to receive DC power from the electronic device 10, and are electrically isolated from the one or more input terminals 211 for detection. and an identification terminal 212 connected to the terminal 112 as a specific terminal.
- the voltage value of the DC supply power supplied from the electronic device 10 to the connected device 20 can be set to a value corresponding to the connected device 20 .
- the equipment system 1 described above includes the electronic equipment 10 and the connection equipment 20 connected to the electronic equipment 10 .
- the connection device 20 has a plurality of second terminals 210 to be connected to the plurality of first terminals 110 of the connector 11 of the electronic device 10 .
- the plurality of second terminals 210 are connected to one or more power terminals 111 to receive DC power from the electronic device 10, and are electrically isolated from the one or more input terminals 211 for detection. and an identification terminal 212 connected to the terminal 112 as a specific terminal.
- the voltage value of the DC supply power supplied from the electronic device 10 to the connected device 20 can be set to a value corresponding to the connected device 20 .
- the control method described above is a control method for supplying DC supply power from the electronic device 10 to the connection device (the connection device 20 or the connection device 20A) connected to the electronic device 10 .
- the electronic device 10 has a plurality of first terminals 110, and the plurality of first terminals 110 are connected to the plurality of second terminals 210 of the connection device (the connection device 20 or the connection device 20A).
- a connector 11 including one or more power supply terminals 111 for supplying DC power to the connection device 20A) and a detection terminal 112 is provided.
- the control method determines whether the second terminal 210 connected to the detection terminal 112 among the plurality of second terminals 210 is a specific terminal when the connection device (the connection device 20 or the connection device 20A) is connected to the connector 11.
- the control method includes supplying DC supply power having a voltage value determined based on the determination result to the connected device (the connected device 20 or the connected device 20A) via one or more power terminals 111 of the connector 11. .
- the voltage value of the DC supply power supplied from the electronic device 10 to the connected device (the connected device 20 or the connected device 20A) can be set to a value corresponding to the connected device (the connected device 20 or the connected device 20A).
- Embodiments of the present disclosure are not limited to the above embodiments.
- the above-described embodiment can be modified in various ways according to the design, etc., as long as the subject of the present disclosure can be achieved. Modifications of the above embodiment are listed below. Modifications described below can be applied in combination as appropriate.
- the electronic device 10 may include at least the connector 11 and the power supply circuit 12, the processing unit 13, the input/output unit 14, the battery 15, the power supply circuit 16, and the power conversion circuit 17. , the external connection terminal 18, and the power supply line 19 are not essential.
- the plurality of first terminals 110 of the connector 11 may include at least one or more power supply terminals 111 and detection terminals 112 .
- the numbers of the power terminals 111, the detection terminals 112, the power receiving terminals 113, and the ground terminals 114 are not limited to the numbers illustrated in the above embodiment.
- the arrangement of the multiple first terminals 110 in the connector 11 is not limited to the example in the above embodiment.
- the detection terminal 112 does not necessarily have to be adjacent to one or more power terminals 111 and need not be arranged between the power terminal 111 and the power receiving terminal 113 .
- the power supply circuit 12 is not limited to the configuration example of the above embodiment.
- voltage switching circuit 121 is not limited to a configuration including DC/DC converter 121a and switch 121b.
- the second voltage value may be different from the prescribed voltage value, and in this case the voltage switching circuit 121 may comprise multiple DC/DC converters.
- the voltage switching circuit may be a switching power supply capable of adjusting the voltage value.
- the power supply circuit 12 may select the voltage value of the DC power supply from three or more voltage values. By appropriately setting the resistance value of the resistor R ⁇ b>21 in the connected device 20 , it becomes possible to identify the plurality of connected devices 20 having the identification terminal 212 .
- connection device 20 may include at least the connector 21, the power supply line 22, the processing unit 23, the input/output unit 24, the control circuit 25, the power conversion circuits 26 and 27, and the external Providing the connection terminal 28 and the power supply line 29 is not essential.
- the plurality of second terminals 210 of the connector 21 may include at least one or more input terminals 211 and an identification terminal 212 .
- the numbers of the input terminals 211, the identification terminals 212, the output terminals 213, and the ground terminals 214 are not limited to the numbers exemplified in the above embodiment.
- the arrangement of the plurality of second terminals 210 in the connector 21 is not limited to the example in the above embodiment.
- identification terminal 212 does not necessarily have to be adjacent to one or more input terminals 211 or be located between input terminal 211 and output terminal 213 .
- a first aspect is an electronic device (10) comprising a connector (11) and a power feeding circuit (12).
- the connector (11) has a plurality of first terminals (110), and the plurality of first terminals (110) are connected to a plurality of second terminals (210) of the connecting device (20; 20A), respectively. , one or more power supply terminals (111) for supplying DC power to the connection device (20; 20A), and a detection terminal (112).
- the power supply circuit (12) is connected to the detection terminal (112) among the plurality of second terminals (210) when the connection device (20; 20A) is connected to the connector (11). It is determined whether the second terminal (210) is a specific terminal.
- the power supply circuit (12) supplies DC power having a voltage value determined based on the determination result to the connection device (20; 20A) through one or more power supply terminals (111) of the connector (11). ).
- the voltage value of the DC supply power supplied from the electronic device (10) to the connected device (20; 20A) can be set to a value corresponding to the connected device (20; 20A).
- a second aspect is an electronic device (10) based on the first aspect.
- said sensing terminal (112) is adjacent to said one or more power terminals (111).
- the power terminal (111) is prevented from contacting the first terminal (110) used for another power supply or the second terminal (210) not corresponding to the power terminal (111) and short-circuiting. Therefore, the detection terminal (112) can be used to reduce the possibility of malfunction due to the short circuit of the power supply terminal (111).
- a third aspect is an electronic device (10) based on the first or second aspect.
- the plurality of first terminals (110) includes one or more power receiving terminals (113) for receiving DC power of a specified voltage value from the connecting device (20; 20A).
- the one or more power supply terminals (111), the detection terminals (112), and the one or more power reception terminals (113) are connected between the one or more power supply terminals (111) and the one or more power reception terminals (113). They are arranged in a line so that the detection terminal (112) is positioned between them.
- the distance between the power receiving terminal (113) and the power terminal (111) can be increased, and the power receiving terminal (113) and the power terminal (111) can be directly or indirectly separated due to a malfunction of the connector (11). It is possible to reduce the possibility of being short-circuited.
- a fourth aspect is an electronic device (10) based on the third aspect.
- the power supply circuit (12) reduces the voltage value of the DC supply power to the specified voltage when the second terminal (210) connected to the detection terminal (112) is not the specific terminal. , and when the second terminal (210) connected to the detection terminal (112) is the specific terminal, the voltage value of the DC supply power is set to the first voltage value. Set to a higher second voltage value.
- the voltage value of the DC supply power supplied from the electronic device (10) to the connected device (20; 20A) can be set to a value corresponding to the connected device (20; 20A).
- a fifth aspect is an electronic device (10) based on the fourth aspect.
- the second terminal (210) connected to the detection terminal (112) is the specific terminal based on the voltage value of the detection terminal (112). to decide whether According to this aspect, the voltage value of the DC supply power supplied from the electronic device (10) to the connected device (20; 20A) can be set to a value corresponding to the connected device (20; 20A).
- a sixth aspect is an electronic device (10) based on the fifth aspect.
- the electronic device (10) comprises a feed line (19) for DC power of the specified voltage value connected to the one or more power receiving terminals (113).
- the power supply circuit (12) supplies the DC power to the connection device (20; 20A) connected to the connector (11) based on the DC power of the specified voltage value obtained from the power supply line (19). supply.
- the configuration of the power supply circuit (12) can be simplified.
- a seventh aspect is an electronic device (10) based on the sixth aspect.
- the power supply circuit (12) has a voltage switching circuit (121) and a detection circuit (122).
- the voltage switching circuit (121) generates the DC supply power of the first voltage value based on the DC power of the specified voltage value obtained from the power supply line (19), ), and a switch (121b) connected between the power supply line (19) and the one or more power supply terminals (111).
- the detection circuit (122) detects the voltage applied to the detection terminal (112).
- the detection circuit (122) switches on/off of the switch (121b) based on the voltage value of the detection terminal (112). According to this aspect, the configuration of the power supply circuit (12) can be simplified.
- An eighth aspect is an electronic device (10) based on the seventh aspect.
- the detection circuit (122) turns off the DC/DC converter (121a) and the switch (121b) in an initial state. According to this aspect, since the voltage of the power supply terminal (111) can be kept low, power consumption can be improved.
- a ninth aspect is an electronic device (10) based on any one of the sixth to eighth aspects.
- the electronic device (10) comprises a power supply circuit (16) that charges and discharges a battery (15) for operating the electronic device (10).
- the power supply circuit (16) charges the battery (15) based on the DC power of the specified voltage value obtained from the power supply line (19).
- the electronic device (10) can be operated by the battery (15) without power supply from the connection device (20; 20A).
- a tenth aspect is an electronic device (10) based on any one of the third to ninth aspects.
- the plurality of first terminals (110) includes a pair of ground terminals (114).
- the pair of ground terminals (114) are located on both sides of the one or more power supply terminals (111), the detection terminal (112) and the one or more power receiving terminals (113) arranged in a line.
- the other first terminal (110) or the second terminal (210) that does not correspond to the power receiving terminal (113) and the power terminal (111) may directly or Possibility of indirect contact can be reduced.
- An eleventh aspect is an electronic device (10) based on any one of the third to tenth aspects.
- the one or more power supply terminals (111), the detection terminals (112), and the one or more power receiving terminals (113) are connected to the corresponding second terminals (210) by contact. contact terminal. According to this aspect, connection between the electronic device (10) and the connection device (20; 20A) is facilitated.
- a twelfth aspect is an electronic device (10) based on the eleventh aspect.
- the one or more power supply terminals (111), the detection terminal (112), and the one or more power receiving terminals (113) are arranged such that the width direction of the one or more power supply terminals (111), the detection It matches the direction in which the terminal (112) and the one or more power receiving terminals (113) are arranged.
- the one or more power terminals (111), the detection terminals (112), and the one or more power receiving terminals (113) are spaced apart from each other by the one or more power terminals (111), the detection terminals (112), and the Narrower than the width of one or more power receiving terminals (113). According to this aspect, the distance between the power receiving terminal (113) and the power terminal (111) can be increased while the connector (11) is configured compactly. ) and the power terminal (111) are directly or indirectly short-circuited.
- a thirteenth aspect is a connecting device (20), which is connected to a plurality of first terminals (110) of a connector (11) of an electronic device (10) according to any one of the first to twelfth aspects. It has a plurality of second terminals (210). The plurality of second terminals (210) are connected to the one or more power terminals (111) to receive DC supply power from the electronic device (10). and an identification terminal (212) electrically separated from the input terminal (211) and connected to the detection terminal (112) as the specific terminal.
- the voltage value of the DC supply power supplied from the electronic device (10) to the connected device (20; 20A) can be set to a value corresponding to the connected device (20; 20A).
- a fourteenth aspect is a device system (1) comprising an electronic device (10) according to any one of the first to twelfth aspects and a connection device (20) connected to the electronic device (10) Prepare.
- the connecting device (20) has a plurality of second terminals (210) to be connected to the plurality of first terminals (110) of the connector (11) of the electronic device (10).
- the plurality of second terminals (210) are connected to the one or more power terminals (111) to receive DC supply power from the electronic device (10). and an identification terminal (212) electrically separated from the input terminal (211) and connected to the detection terminal (112) as the specific terminal.
- the voltage value of the DC supply power supplied from the electronic device (10) to the connected device (20; 20A) can be set to a value corresponding to the connected device (20; 20A).
- a fifteenth aspect is a control method for supplying DC supply power from an electronic device (10) to a connection device (20; 20A) connected to the electronic device (10).
- the electronic device (10) has a plurality of first terminals (110), and the plurality of first terminals (110) are connected to a plurality of second terminals (210) of the connecting device (20; 20A).
- a connector (11) including one or more power supply terminals (111) for supplying DC power to the connection device (20; 20A) and a detection terminal (112) is provided.
- a second terminal ( 210) is a particular terminal.
- the control method supplies DC supply power having a voltage value determined based on the determination result to the connection device (20; 20A) via one or more power supply terminals (111) of the connector (11). including doing According to this aspect, the voltage value of the DC supply power supplied from the electronic device (10) to the connected device (20; 20A) can be set to a value corresponding to the connected device (20; 20A).
- the present disclosure is applicable to electronic devices, connection devices, device systems, and control methods. Specifically, an electronic device that supplies DC power to a connected device, a connected device that receives DC power from the electronic device, a device system that supplies DC power from the electronic device to the connected device, and from the electronic device to the connected device INDUSTRIAL APPLICABILITY
- the present disclosure is applicable to control methods for supplying DC power to
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Abstract
Description
[1.1 概要]
図1及び図5は、それぞれ一実施の形態にかかる電子機器10を備える機器システム1,1Aの構成例のブロック図である。図1の機器システム1は、電子機器10と、接続機器20とを備え、図5の機器システム1Aは、電子機器10と、接続機器20Aとを備える。電子機器10には、接続機器20及び接続機器20Aが択一的に接続可能である。
以下、図1~図7を参照して、機器システム1について説明する。機器システム1は、図1に示すように、電子機器10と、接続機器20とを備える。
図1に示すように、電子機器10は、コネクタ11と、給電回路12と、処理部13と、入出力部14と、バッテリ15と、電源回路16と、電力変換回路17と、外部接続端子18と、給電路19とを備える。
次に、図1及び図5を参照して、接続機器20及び接続機器20Aについて説明する。上述したように、本実施の形態では、接続機器20及び接続機器20Aは、ポートリプリケータであり、接続機器20が新型、接続機器20Aが旧型である。
接続機器20は、図1に示すように、コネクタ21と、給電路22と、処理部23と、入出力部24と、制御回路25と、電力変換回路26,27と、外部接続端子28と、給電路29とを備える。
接続機器20Aは、図5に示すように、コネクタ21Aと、給電路22Aと、処理部23と、入出力部24と、制御回路25と、電力変換回路26,27と、外部接続端子28と、給電路29とを備える。接続機器20Aのコネクタ21A及び給電路22Aは、接続機器20のコネクタ21及び給電路22と異なっている。
次に、電子機器10に接続機器20又は接続機器20Aを接続した場合の、給電回路12の動作について図4、図6及び図7を参照して説明する。図4は、給電回路12の動作を説明するためのものであるから、電子機器10及び接続機器20の一部を省略している。同様に、図6は、給電回路12の動作を説明するためのものであるから、電子機器10及び接続機器20Aの一部を省略している。
以上述べたように、電子機器10のコネクタ11は、複数の第1端子110を有する。複数の第1端子110は、図2に示すように、2つの電源端子111、検出端子112、及び3つの受電端子113を含む。ここで、電源端子111は、接続機器(接続機器20又は接続機器20A)への給電に用いられる。そのため、電源端子111には、コネクタ11の受電端子113等の別の給電に用いられる第1端子110又は電源端子111に対応していない第2端子210が接触しないことが望ましい。本実施の形態では、図2に示すように、検出端子112が1以上の電源端子111に隣接する。検出端子112は、接続機器(接続機器20又は接続機器20A)への給電に用いられない。そのため、電源端子111に別の給電に用いられる第1端子110又は電源端子111に対応していない第2端子210が接触して短絡することを防止するために検出端子112を利用することが可能となり、電源端子111の短絡による不具合の発生の可能性を低減できる。特に、検出端子112は、2つの電源端子111と、3つの受電端子113との間に位置する。この構成によれば、受電端子113と電源端子111との距離を離すことができる。例えば、受電端子113が破損して、電源端子111側に変位したとしても、検出端子112があることで、受電端子113が電源端子111に届かないようにすることができて、受電端子113と電源端子111とが直接又は間接的に短絡される可能性を低減できる。電源端子111が破損した場合も、同様に、受電端子113と電源端子111とが直接又は間接的に短絡される可能性を低減できる。このように、コネクタ11によれば、受電端子113と電源端子111との距離を離すことができ、コネクタ11の不具合等によって受電端子113と電源端子111とが直接又は間接的に短絡される可能性を低減できる。
以上述べた電子機器10は、コネクタ11と、給電回路12とを備える。コネクタ11は、複数の第1端子110を有し、複数の第1端子110が、接続機器20,20Aの複数の第2端子210にそれぞれ接続され、接続機器20,20Aに直流電力を供給するための1以上の電源端子111と、検出端子112とを含む。給電回路12は、コネクタ11に接続機器20,20Aが接続された場合に複数の第2端子210のうち検出端子112に接続された第2端子210が特定の端子であるかどうかの判別をする。給電回路12は、判別の結果に基づいて決定された電圧値を有する直流供給電力をコネクタ11の1以上の電源端子111を介して接続機器20,20Aに供給する。この構成によれば、電子機器10から接続機器(接続機器20又は接続機器20A)に供給される直流供給電力の電圧値を接続機器(接続機器20又は接続機器20A)に対応した値に設定できる。
本開示の実施の形態は、上記実施の形態に限定されない。上記実施の形態は、本開示の課題を達成できれば、設計等に応じて種々の変更が可能である。以下に、上記実施の形態の変形例を列挙する。以下に説明する変形例は、適宜組み合わせて適用可能である。
上記実施の形態及び変形例から明らかなように、本開示は、下記の態様を含む。以下では、実施の形態との対応関係を明示するためだけに、符号を括弧付きで付している。
10 電子機器
11 コネクタ
110 第1端子
111 電源端子
112 検出端子
113 受電端子
114 グランド端子
12 給電回路
121 電圧切替回路
121a DC/DCコンバータ
121b スイッチ
122 検出回路
15 バッテリ
16 電源回路
19 給電路
20,20A 接続機器
210 第2端子
211 入力端子
212 識別端子
Claims (15)
- 複数の第1端子を有し、前記複数の第1端子が、接続機器の複数の第2端子にそれぞれ接続され、前記接続機器に直流電力を供給するための1以上の電源端子と、検出端子とを含む、コネクタと、
前記コネクタに前記接続機器が接続された場合に前記複数の第2端子のうち前記検出端子に接続された第2端子が特定の端子であるかどうかの判別をし、前記判別の結果に基づいて設定された電圧値を有する直流供給電力を前記コネクタの1以上の電源端子を介して前記接続機器に供給する給電回路と、
を備える、
電子機器。 - 前記検出端子は、前記1以上の電源端子に隣接する、
請求項1に記載の電子機器。 - 前記複数の第1端子は、前記接続機器から規定電圧値を有する直流電力を受け取るための1以上の受電端子を含み、
前記1以上の電源端子、前記検出端子、及び前記1以上の受電端子は、前記1以上の電源端子と前記1以上の受電端子との間に前記検出端子が位置するように、一列に並ぶ、
請求項1又は2に記載の電子機器。 - 前記給電回路は、
前記検出端子に接続された第2端子が前記特定の端子でない場合には前記直流供給電力の電圧値を前記規定電圧値より小さい第1電圧値に設定し、
前記検出端子に接続された第2端子が前記特定の端子である場合には前記直流供給電力の電圧値を前記第1電圧値より大きい第2電圧値に設定する、
請求項3に記載の電子機器。 - 前記給電回路は、前記検出端子の電圧値に基づいて、前記検出端子に接続された第2端子が前記特定の端子であるかどうかの判別をする、
請求項4に記載の電子機器。 - 前記1以上の受電端子に接続され、前記規定電圧値の直流電力を受け取る給電路を備え、
前記給電回路は、前記給電路から得られる前記規定電圧値の直流電力に基づいて、前記コネクタに接続された前記接続機器に前記直流供給電力を供給する、
請求項5に記載の電子機器。 - 前記給電回路は、
前記給電路から得た前記規定電圧値の直流電力に基づいて前記第1電圧値の前記直流供給電力を生成して前記1以上の電源端子に出力するDC/DCコンバータ、及び、前記給電路と前記1以上の電源端子との間に接続されるスイッチを有する電圧切替回路と、
前記検出端子に印加される電圧を検出する検出回路と、
を有し、
前記検出回路は、前記検出端子の電圧の値に基づいて、前記スイッチのオン/オフを切り替える、
請求項6に記載の電子機器。 - 前記検出回路は、初期状態では前記DC/DCコンバータ、及び、前記スイッチをオフにする、
請求項7に記載の電子機器。 - 前記電子機器を動作させるためのバッテリの充放電を行う電源回路を備え、
前記電源回路は、前記給電路から得られる前記規定電圧値の直流電力に基づいて前記バッテリを充電する、
請求項6~8のいずれか一つに記載の電子機器。 - 前記複数の第1端子は、一対のグランド端子を含み、
前記一対のグランド端子は、前記1以上の電源端子、前記検出端子、及び前記1以上の受電端子が前記一対のグランド端子の間に位置するように、配置されている、
請求項3~9のいずれか一つに記載の電子機器。 - 前記1以上の電源端子、前記検出端子、及び前記1以上の受電端子の各々は、接触により対応する第2端子に接続される形状の接触端子である、
請求項3~10のいずれか一つに記載の電子機器。 - 前記1以上の電源端子、前記検出端子、及び前記1以上の受電端子の幅方向は、前記1以上の電源端子、前記検出端子、及び前記1以上の受電端子が並ぶ方向に一致し、
前記1以上の電源端子、前記検出端子、及び前記1以上の受電端子の間隔は、前記1以上の電源端子、前記検出端子、及び前記1以上の受電端子の幅より狭い、
請求項11に記載の電子機器。 - 請求項1~12のいずれか一つに記載の電子機器のコネクタの複数の第1端子にそれぞれ接続される複数の第2端子を有し、
前記複数の第2端子は、前記1以上の電源端子に接続されて前記電子機器から前記直流供給電力を受け取るための1以上の入力端子と、前記1以上の入力端子から電気的に分離され前記検出端子に前記特定の端子として接続される識別端子とを含む、
接続機器。 - 請求項1~12のいずれか一つに記載の電子機器と、
前記電子機器に接続される接続機器と、
を備え、
前記接続機器は、前記電子機器のコネクタの複数の第1端子にそれぞれ接続される複数の第2端子を有し、
前記複数の第2端子は、前記1以上の電源端子に接続されて前記電子機器から前記直流供給電力を受け取るための1以上の入力端子と、前記1以上の入力端子から電気的に分離され前記検出端子に前記特定の端子として接続される識別端子とを含む、
機器システム。 - 電子機器から前記電子機器に接続される接続機器に直流供給電力を供給するための制御方法であって、
前記電子機器は、複数の第1端子を有し、前記複数の第1端子が、前記接続機器の複数の第2端子にそれぞれ接続され、前記接続機器に直流電力を供給するための1以上の電源端子と、検出端子とを含む、コネクタを備え、
前記制御方法は、
前記コネクタに前記接続機器が接続された場合に前記複数の第2端子のうち前記検出端子に接続された第2端子が特定の端子であるかどうかの判別をすることと、
前記判別の結果に基づいて設定された電圧値を有する直流供給電力を前記コネクタの1以上の電源端子を介して前記接続機器に供給することと、
を含む、
制御方法。
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JP2012209902A (ja) | 2011-03-30 | 2012-10-25 | Semiconductor Components Industries Llc | 入出力回路 |
JP2015162450A (ja) * | 2014-02-28 | 2015-09-07 | パナソニックIpマネジメント株式会社 | 点灯装置および該点灯装置を用いた照明システム |
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US20100295384A1 (en) * | 2009-05-21 | 2010-11-25 | Stmicroelectronics, Inc. | Pc docking station simplification |
JP2011166935A (ja) * | 2010-02-09 | 2011-08-25 | Nippon Telegr & Teleph Corp <Ntt> | 直流給電システム及び直流電源アダプタ装置 |
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