# US 2021/0344210 A1 · Electronic device and control method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0344210 A1 - Document ID: US20210344210A1 - Status: Published application - Kind: A1 - Application number: 17/241,642 - Filed: 2021-04-27 - Published: 2021-11-04 - Earliest claimed: 2020-04-30 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Sho Ichikawa; Kento Inai; Hiroshi Moritomo; Kenichirou Hayashi; Shigeo Aoyagi; Sayaka Kumon; Hirokazu Izuoka; Akira Matsuo - Web page: https://patentgrep.com/patent/US20210344210A1 ## CPC - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - H02J 7/50: acting upon multiple batteries simultaneously or sequentially - H02J 7/82: Control of state of charge [SOC] - H02J 7/933: {the cycle being controlled or terminated in response to electric parameters} - H04N 23/633: {for displaying additional information relating to control or operation of the camera} - H04N 23/65: Control of camera operation in relation to power supply - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An electronic device includes a connection unit and a control unit. The control unit enables a power supply path for supplying power from a first battery connected to an external device to the electronic device and enables a power supply path for supplying power from a second battery connected to the external device to a predetermined functional unit of the external device, in a case where the first battery or the second battery connected to the external device is not charged. The control unit disables a power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enables a power supply path for supplying power from the electronic device to the first battery or the second battery, in a case where the first battery or the second battery connected to the external device is charged. ## Claims ### Claim 1 An electronic device comprising: a connection unit; and a control unit that (a) enables a power supply path for supplying power from a first battery connected to an external device to the electronic device and enables a power supply path for supplying power from a second battery connected to the external device to a predetermined functional unit of the external device, in a case where the first battery or the second battery connected to the external device is not charged, and (b) disables a power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enables a power supply path for supplying power from the electronic device to the first battery or the second battery, in a case where the first battery or the second battery connected to the external device is charged. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein the control unit includes a first switch for enabling a power supply path between the first battery and the electronic device, a second switch for enabling a power supply path between the second battery, the external device and the predetermined functional unit, and a third switch for enabling a power supply path between the second battery and the electronic device, wherein the control unit controls the first switch, the second switch and the third switch to supply power from the first battery to the electronic device and to supply power from the second battery to the predetermined functional unit, in a case where the first battery or the second battery connected to the external device is not charged, and wherein the control unit controls the first switch, the second switch and the third switch to stop supplying power from the second battery to the predetermined functional unit and to supply power to the first battery or the second battery, in a case where the first battery or the second battery connected to the external device is charged. ### Claim 3 (depends on 2) The electronic device according to claim 2, wherein the control unit controls the second switch to enable a power supply path connecting the second battery and the predetermined functional unit, in a case where the electronic device is turned on and the predetermined functional unit is activated, and wherein the control unit controls the second switch to disable the power supply path connecting the second battery and the predetermined functional unit, in a case where the predetermined functional unit is not activated. ### Claim 4 (depends on 1) The electronic device according to claim 1, wherein the control unit controls a charging unit to charge the first battery or the second battery with power supplied from an external device connected to the electronic device, and wherein the control unit determines a charging order of the first battery and the second battery, in a case where the first battery or the second battery connected to the external device is charged. ### Claim 5 (depends on 4) The electronic device according to claim 4, wherein the control unit determines the charging order of the first battery and the second battery based on a user setting. ### Claim 6 (depends on 4) The electronic device according to claim 4, wherein the control unit controls the charging unit to charge the first battery in a case where a remaining level of the first battery is smaller than a remaining level of the second battery, and controls the charging unit to charge the second battery in a case where the remaining level of the second battery is smaller than the remaining level of the first battery. ### Claim 7 (depends on 1) The electronic device according to claim 1, further comprising a display unit that displays a remaining level of the first battery or the second battery, wherein the display unit displays information indicating a power supply destination of the first battery or the second battery. ### Claim 8 (depends on 1) The electronic device according to claim 1, wherein the electronic device is capable of acting as an image capture apparatus. ### Claim 9 (depends on 1) The electronic device according to claim 1, wherein the predetermined functional unit has a function of performing a wireless communication. ### Claim 10 (depends on 1) The electronic device according to claim 1, wherein the control unit that (a) enables the power supply path for supplying power from the first battery connected to the external device to the electronic device and enables the power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit, in a case where the second battery connected to the external device is not charged, and (b) disables the power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enables the power supply path for supplying power from the second battery connected to the external device to the electronic device, in a case where the second battery connected to the external device is charged. ### Claim 11 A method comprising: enabling a power supply path for supplying power from a first battery connected to an external device to an electronic device and enabling a power supply path for supplying power from a second battery connected to the external device to a predetermined functional unit of the external device, in a case where the first battery or the second battery connected to the external device is not charged; and disabling a power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enabling a power supply path for supplying power from the electronic device to the first battery or the second battery, in a case where the first battery or the second battery connected to the external device is charged. ### Claim 12 (depends on 11) The method according to claim 11, further comprising: causing a display unit of the electronic device to display a remaining level of the first battery or the second battery; and causing the display unit of the electronic device to display information indicating a power supply destination of the first battery or the second battery. ### Claim 13 (depends on 11) The method according to claim 11, wherein the electronic device is capable of acting as an image capture apparatus. ### Claim 14 (depends on 11) The method according to claim 11, wherein the predetermined functional unit has a function of performing a wireless communication. ### Claim 15 (depends on 11) The method according to claim 11, further comprising: enabling the power supply path for supplying power from the first battery connected to the external device to the electronic device and enabling the power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit, in a case where the second battery connected to the external device is not charged; and disabling the power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enabling the power supply path for supplying power from the second battery connected to the external device to the electronic device, in a case where the second battery connected to the external device is charged. ### Claim 16 A non-transitory storage medium storing a program for causing a computer to execute a method, the method comprising: enabling a power supply path for supplying power from a first battery connected to an external device to an electronic device and enabling a power supply path for supplying power from a second battery connected to the external device to a predetermined functional unit of the external device, in a case where the first battery or the second battery connected to the external device is not charged; and disabling a power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enabling a power supply path for supplying power from the electronic device to the first battery or the second battery, in a case where the first battery or the second battery connected to the external device is charged. ### Claim 17 (depends on 16) The non-transitory storage medium according to claim 16, further comprising: causing a display unit of the electronic device to display a remaining level of the first battery or the second battery; and causing the display unit of the electronic device to display information indicating a power supply destination of the first battery or the second battery. ### Claim 18 (depends on 16) The non-transitory storage medium according to claim 16, wherein the electronic device is capable of acting as an image capture apparatus. ### Claim 19 (depends on 16) The non-transitory storage medium according to claim 16, wherein the predetermined functional unit has a function of performing a wireless communication. ### Claim 20 (depends on 16) The non-transitory storage medium according to claim 16, further comprising: enabling the power supply path for supplying power from the first battery connected to the external device to the electronic device and enabling the power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit, in a case where the second battery connected to the external device is not charged; and disabling the power supply path for supplying power from the second battery connected to the external device to the predetermined functional unit and enabling the power supply path for supplying power from the second battery connected to the external device to the electronic device, in a case where the second battery connected to the external device is charged.