ELECTRONIC DEVICE, CAMERA, POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD

Abstract

An electronic device to which a connecting device (20) can be connected, the electronic device (10) comprising: a first power supply unit (11) capable of receiving internal power from a first battery (12) in the electronic device (10) and receiving external power, and preferably outputting the external power instead of the internal power from the first battery (12); a power input terminal (T6, T6A, T6B) of the connecting device (20) connected to a second power supply unit (21) provided in the connecting device (20), capable of receiving internal power from a second battery (22) in the connecting device (20) and receiving the external power, and preferably outputting the external power instead of the internal power from the second battery (22);an external power supply connection unit or an external power supply connection unit that connects a power supply path of the external power to the first power supply unit and a power supply path of the external power to the second power supply unit; a selection unit (13) that selects one of the first power supply unit (11) and the second power supply unit (21) as a supply source for the use power of the electronic device (10);and a control unit that causes the selection unit (13) to select a power supply unit that receives the internal power with a valid voltage between the first power supply unit (11) and the second power supply unit (21), wherein in a case where there is no battery with the valid voltage in one device (10) that receives the external power between the electronic device (10) and the connection device (20), and where there is a battery with the valid voltage in the other device, and in a case where the external power for the one device (10) is interrupted, the selection unit (13) selects the power supply unit of the other device, thereby switching a power supply from the interrupted external power to the internal power supply of the other device.;

Claims

[1] Electronic device to which a connection device (20) can be connected, the electronic device (10) comprising: a first power supply unit (11) capable of receiving internal power from a first battery (12) in the electronic device (10) and receiving external power, and preferably outputting the external power instead of the internal power from the first battery (12); a power input terminal (T6, T6A, T6B) of the connecting device (20) connected to a second power supply unit (21) provided in the connecting device (20), capable of receiving internal power from a second battery (22) in the connecting device (20) and receiving the external power, and preferably outputting the external power instead of the internal power from the second battery (22); an external power supply connection unit connecting a power supply path of the external power to the first power supply unit and a power supply path of the external power to the second power supply unit; a selection unit (13) that selects one of the first power supply unit (11) and the second power supply unit (21) as the supply source for the usage current of the electronic device (10); and a control unit that causes the selection unit (13) to select a power supply unit that receives the internal power with a valid voltage between the first power supply unit (11) and the second power supply unit (21), wherein in a case where there is no battery with the valid voltage in the one device (10) receiving the external power between the electronic device (10) and the connecting device (20), and where there is a battery with the valid voltage in the other device, and in a case where the external power for said one device (10) is interrupted, the selection unit (13) selects the power supply unit of the other device, whereby one power supply is switched from the interrupted external power to the internal power supply of the other device. [2] Electronic device according to claim 1, wherein the first power supply unit (11) preferably supplies power with a higher voltage between the internal power from the first battery (12) and the external power to the selection unit (13), and wherein the second power supply unit (21) preferably supplies power having a higher voltage between the internal power of the second battery (22) and the external power to the selection unit (13). [3] The electronic device according to claim 1 or 2, wherein the control unit (15) comprises a determination unit (16) that determines the presence or absence of the first battery (12) and the second battery (22) having a valid voltage and provides an instruction of selection to the selection unit based on a result of the determination by the determination unit (16). [4] The electronic device according to claim 3, wherein the control unit (15) causes the selection unit (13) to select a power supply unit that is set in advance between the first power supply unit (11) and the second power supply unit (21) in a state where both the first battery (12) and the second battery (22) have the valid voltage. [5] Electronic device according to claim 3 or 4, wherein the control unit (15) causes the selection unit (13) to connect a power supply unit connected to the battery with the valid voltage between the first power supply unit (11) and the second power supply unit (21) in a state in which one of the first battery (12) and the second battery (22) has the valid voltage. [6] Electronic device according to one of claims 1 to 5, wherein the electronic device (10) and the connection device (20) are each provided with an external power input terminal capable of receiving the external power from an external power supply, wherein the first power supply unit (11) is connected to the external power supply terminal provided in the electronic device, and wherein the second power supply unit (21) is connected to the external power supply terminal provided in the connection device (20). [7] Electronic device according to one of claims 1 to 5, wherein one of the electronic devices and the connection device (20) is formed with an external power input terminal capable of receiving the external power from an external power supply, and wherein one of the first power supply unit (11) and the second power supply unit (21) is connected to the external power supply terminal via the external power supply unit and the other power supply unit is connected to the external power supply terminal and not via the external power supply unit. [8] The electronic device of claim 6, further comprising: a reverse current prevention circuit (59) that prevents a current from flowing from one external power supply to the other external power supply connected to the external power input terminal of the electronic device and the external power supply connected to the external power input terminal of the connection device (20). [9] Electronic device according to one of claims 1 to 8, further comprising: a power supply OR circuit (58) receiving the output of the first power supply unit (11) and the output of the second power supply unit (21) and supplying the power to the control unit (15). [10] A camera configured as an electronic device (10) according to any one of claims 1 to 9, wherein the connecting device (20) is configured as a handle. [11] A power supply system comprising an electronic device (10) and a connecting or connection device (20) connectable to the electronic device (10), the power supply system comprising: a first power supply unit (11) provided in the electronic device (10) and capable of receiving internal power from a first battery (12) in the electronic device (10) and receiving external power, and preferably outputting the external power instead of the internal power from the first battery (12); a second power supply unit (21) provided in the connecting device (20) and capable of receiving internal power from a second battery (22) in the connecting device (20) and receiving the external power, and preferably outputting the external power instead of the internal power from the second battery (22); an external power supply connection unit connecting a power supply path of the external power to the first power supply unit (11) and a power supply path of the external power to the second power supply unit (21); a selection unit (13) that selects one of the first power supply unit (11) and the second power supply unit (21) as the supply source for the usage current of the electronic device (10); and a control unit (15) which causes the selection unit (13) to select a power supply unit which receives the internal power with a valid voltage between the first power supply unit (11) and the second power supply unit (21), wherein in a case where there is no battery with the valid voltage in the one device receiving the external current between the electronic device (10) and the connecting device (20), and where there is a battery with the valid voltage in the other device, and In a case where the external power to one device is interrupted, the selection unit (13) selects the power supply unit of the other device, whereby one power supply is switched from the interrupted external power to the internal power supply of the other device. [12] Power supply system according to claim 11, wherein the first power supply unit (11) preferably supplies power with a higher voltage between the internal power from the first battery (12) and the external power to the selection unit (13), and wherein the second power supply unit (21) preferably supplies power having a higher voltage between the internal power of the second battery (22) and the external power to the selection unit (13). [13] The power supply system according to claim 11 or 12, wherein the control unit (15) comprises a determination unit (16) that determines the presence or absence of the first battery (12) and the second battery (22) having a valid voltage and provides an instruction of selection to the selection unit (13) based on a result of the determination by the determination unit (16). [14] The power supply system according to claim 13, wherein the control unit (15) causes the selection unit (13) to select a power supply unit that is set in advance between the first power supply unit (11) and the second power supply unit (21) in a state where both the first battery (12) and the second battery (22) have the valid voltage. [15] The power supply system according to claim 13 or 14, wherein the control unit (15) causes the selection unit (13) to select a battery-connected power supply unit having the valid voltage between the first power supply unit (11) and the second power supply unit (21) in a state where one of the first battery (12) and the second battery (22) has the valid voltage. [16] Power supply system according to one of claims 11 to 15, wherein the electronic device (10) and the connection device (20) are each provided with an external power input terminal capable of receiving the external power from an external power supply, wherein the first power supply unit (11) is connected to the external power supply terminal provided in the electronic device (10), and wherein the second power supply unit (21) is connected to the external power supply terminal provided in the connection device (20). [17] Power supply system according to one of claims 11 to 15, wherein one of the electronic devices and the connection device (20) is formed with an external power input terminal capable of receiving the external power from an external power supply, and wherein one of the first power supply unit (11) and the second power supply unit (21) is connected to the external power supply terminal via the external power supply unit and the other power supply unit is connected to the external power supply terminal and not via the external power supply unit. [18] The power supply system of claim 16, further comprising: a reverse current prevention circuit (69) that prevents a current from flowing from one external power supply to the other external power supply of the external power supply connected to the external power input terminal of the electronic device (10) and the external power supply connected to the external power input terminal of the connection device (20). [19] Power supply system according to one of claims 11 to 18, further comprising: a power supply OR circuit (58) receiving the output of the first power supply unit (11) and the output of the second power supply unit (21) and supplying the power to the control unit (15). [20] A power supply method that supplies power to an electronic device (10) using a first power supply unit (11) provided in the electronic device (10) and capable of receiving internal power from a first battery (12) in the electronic device (10) and receiving external power and preferably outputting the external power instead of the internal power from the first battery (12), and using a second power supply unit (21) provided in a connection device (20) connectable to the electronic device (10), capable of receiving internal power from a second battery (22) in the connection device (20) and receiving the external power and preferably outputting the external power instead of the internal power from the second battery (22), the method comprising: Connecting a power supply path of the external power to the first power supply unit (11) and a power supply path of the external power to the second power supply unit (21); and Selecting a power supply unit that receives the internal power with a valid voltage as a supply source for the usage power of the electronic device between the first power supply unit (11) and the second power supply unit (21), wherein in a case where there is no battery with the valid voltage in the one device receiving the external current between the electronic device (10) and the connecting device (20), and where there is a battery with the valid voltage in the other device, and In a case where the external power to one device is interrupted, the selection unit (13) selects the power supply unit of the other device, whereby one power supply is switched from the interrupted external power to the internal power supply of the other device.

Images