# US 2021/0242701 A1 · Electronic device, printing apparatus, and method for controlling electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0242701 A1 - Document ID: US20210242701A1 - Status: Published application - Kind: A1 - Application number: 17/159,896 - Filed: 2021-01-27 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Tatsuro Watanabe - Web page: https://patentgrep.com/patent/US20210242701A1 ## CPC - B41J 29/12: Guards, shields or dust excluders - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - B41J 29/38: Drives, motors, controls or automatic cut-off devices for the entire printing mechanism - B41J 29/393: Devices for controlling or analysing the entire machine {; Controlling or analysing mechanical parameters involving printing of test patterns} - H02J 7/70: characterised by the mechanical construction - H02J 2207/30: Charge provided using DC bus or data bus of a computer - Y02E 60/10: Energy storage using batteries - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An electronic device includes a control unit that allows at least a first external power source to be connected thereto and is activated upon receipt of a predetermined power, and a power source connected to the control unit. In an activated state, the control unit performs enumeration processing between the control unit and the first external power source. The power source has charging unit capable of being charged by a charge current supplied from the first external power source, and output unit that outputs the predetermined power from the charging unit to the control unit in response to a connection between the control unit and the first external power source. The charging unit sets the charge current to a current value according to whether the enumeration processing is completed. ## Claims ### Claim at position 1 1-18. (canceled) ### Claim 19 An electric device including a battery that is capable of accumulating power and a control unit that is capable of performing enumeration processing in conformity with a Universal Serial Bus (USB) standard, the electric device comprising: a connection unit that connects with an opposite apparatus in conformity with the USB standard; an activation unit that activates the control unit by supplying the control unit with power from the battery in a case where the opposite apparatus connects with the connection unit in conformity with the USB standard; and a processing unit that performs the enumeration processing by the control unit which is supplied with power from the battery in a case where the control unit is activated. ### Claim 20 (depends on 19) The electric device according to claim 19, further comprising: a reception unit that is supplied with power from the opposite apparatus via a connection in conformity with the USB standard in a case where the opposite apparatus connects with the connection unit in conformity with the USB standard. ### Claim 21 (depends on 20) The electric device according to claim 20, wherein the control unit can be activated by power equal to or larger than a first value, in a case where the opposite apparatus connects with the connection unit in conformity with the USB standard, power of a second value smaller than the first value can be supplied via the connection in conformity with the USB standard before the enumeration processing is completed, and power of a third value equal to or larger than the first value can be supplied via the connection in conformity with the USB standard after the enumeration processing is completed. ### Claim 22 (depends on 21) The electric device according to claim 21, wherein in a case where a protocol used for the connection in conformity with the USB standard is Standard Downstream Port, the power of the third value is supplied via the connection in conformity with the USB standard based on a completion of the enumeration processing. ### Claim 23 (depends on 21) The electric device according to claim 21, wherein in a case where a protocol used for the connection in conformity with the USB standard is Charging Downstream Port, the power of the third value is supplied via the connection in conformity with the USB standard irrespective of whether the enumeration processing is completed. ### Claim 24 (depends on 21) The electric device according to claim 21, wherein in a case where a protocol used for the connection in conformity with the USB standard is Dedicated Charging Port, the power of the third value is supplied via the connection in conformity with the USB standard irrespective of whether the enumeration processing is completed. ### Claim 25 (depends on 24) The electric device according to claim 24, wherein in a case where the protocol used for the connection in conformity with the USB standard is Dedicated Charging Port, the enumeration processing is not performed. ### Claim 26 (depends on 20) The electric device according to claim 20, wherein power supplied via the connection in conformity with the USB standard is used to charge the battery. ### Claim 27 (depends on 20) The electric device according to claim 20, further comprising: a printing unit that performs printing based on print data, wherein power supplied via the connection in conformity with the USB standard is used to perform the printing. ### Claim 28 (depends on 19) The electric device according to claim 19, further comprising: a power source connection unit that connects with an AC power source, wherein in a case where the AC power source connects with the power source connection unit, power is supplied from the AC power source. ### Claim 29 (depends on 28) The electric device according to claim 28, wherein in a case where both of a connection between the AC power source and the power source connection unit and a connection between the opposite apparatus and the connection unit in conformity with the USB standard are established, power is supplied from the AC power source. ### Claim 30 (depends on 19) The electric device according to claim 19, further comprising: a communication unit that performs communication of predetermined data via a connection in conformity with the USB standard. ### Claim 31 (depends on 20) The electric device according to claim 20, wherein the predetermined data is print data, and printing is performed by the electric device based on the print data. ### Claim 32 (depends on 19) The electric device according to claim 19, wherein the control unit is an Application Specific Integrated Circuit (ASIC). ### Claim 33 A method of controlling an electric device including a battery that is capable of accumulating power and a control unit that is capable of performing enumeration processing in conformity with a Universal Serial Bus (USB) standard, the method including: connecting with an opposite apparatus in conformity with the USB standard; activating the control unit by supplying the control unit with power from the battery in a case where the opposite apparatus connects with the electric device in conformity with the USB standard; and performing the enumeration processing by the control unit which is supplied with power from the battery in a case where the control unit is activated. ### Claim 34 (depends on 33) The method according to claim 33, further comprising supplying with power from the opposite apparatus via a connection in conformity with the USB standard in a case where the opposite apparatus is connected in conformity with the USB standard. ### Claim 35 (depends on 33) The method according to claim 33, further comprising performing communication of predetermined data via a connection in conformity with the USB standard. ### Claim 36 A non-transitory computer-readable storage medium storing a program to cause an electric device including a battery that is capable of accumulating power and a control unit that is capable of performing enumeration processing in conformity with a Universal Serial Bus (USB) standard to operate as: an activation unit that activates the control unit by supplying the control unit with power from the battery in a case where the opposite apparatus connects with the electric device in conformity with the USB standard; and a processing unit that performs the enumeration processing by the control unit which is supplied with power from the battery in a case where the control unit is activated. ### Claim 37 (depends on 36) The non-transitory computer-readable storage medium according to claim 36, further comprising: a reception unit that is supplied with power from the opposite apparatus via a connection in conformity with the USB standard in a case where the opposite apparatus connects with the connection unit in conformity with the USB standard. ### Claim 38 (depends on 36) The non-transitory computer-readable storage medium according to claim 36, further comprising: a communication unit that performs communication of predetermined data via a connection in conformity with the USB standard.