# US 2013/0281155 A1 · System, electronic device, and charger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0281155 A1 - Document ID: US20130281155A1 - Status: Published application - Kind: A1 - Application number: 13/847,835 - Filed: 2013-03-20 - Published: 2013-10-24 - Earliest claimed: 2012-03-22 - Inventors: Takumi Ogata; Ryouji Kawashima; Takashi Ito - Web page: https://patentgrep.com/patent/US20130281155A1 ## CPC - H02J 50/402: {the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas} - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 50/10: using inductive coupling - H02J 50/70: involving the reduction of electric, magnetic or electromagnetic leakage fields - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H04B 1/3883: Arrangements for mounting batteries or battery chargers - H04B 5/79: for data transfer in combination with power transfer - H04M 19/08: with current supply sources at the substations (generating ringing current H04M19/04) - H02J 50/12: of the resonant type - H02J 50/20: using microwaves or radio frequency waves - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04B: TRANSMISSION - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A system includes a charger and a smartphone. The charger includes a plurality of coils that transmit power through electromagnetic waves. The smartphone includes a power receiving unit, a communication unit, and a storage. The power receiving unit receives power transmitted from the coils. The communication unit communicates with a base station. The storage stores information of communication quality of the communication unit with the base station, when the power receiving unit is receiving power. The smartphone selects, from among the plurality of coils, a combination of the coils for transmitting power, based on information of the communication quality stored in the storage. The charger transmits power by the coils, based on the selection by the smartphone. ## Claims ### Claim 1 A system comprising: a charger that includes a plurality of power transmitting units that transmit power through electromagnetic waves; and an electronic device including a power receiving unit for receiving power transmitted from the power transmitting units, a communication unit for communicating with a base station, and a storage unit for storing information of communication quality of the communication unit with the base station when the power receiving unit is receiving power, wherein the electronic device selects, from among the plurality of power transmitting units, a combination of the power transmitting units for transmitting power, based on the information of the communication quality stored in the storage unit, and wherein the charger transmits power by the power transmitting units, based on the selection by the electronic device. ### Claim 2 (depends on 1) The system according to claim 1, wherein the electronic device selects a combination of the power transmitting units with which the communication quality is of at least a predetermined standard. ### Claim 3 (depends on 2) The system according to claim 2, wherein, in a case in which there are a plurality of combinations of the power transmitting units with which the communication quality is of at least the predetermined standard, the electronic device selects a combination with which the communication quality is the best. ### Claim 4 (depends on 2) The system according to claim 2, wherein, in a case in which there is no combination of the power transmitting units with which the communication quality is of at least the predetermined standard, the electronic device selects a combination with which the communication quality is the best, among the combinations with which the communication quality is below the predetermined standard. ### Claim 5 (depends on 2) The system according to claim 2, wherein the electronic device includes a notification unit for notifying that the communication quality is deteriorated, in a case in which there is no combination of the power transmitting units with which the communication quality is of at least the predetermined standard. ### Claim 6 (depends on 4) The system according to claim 4, wherein, in a case in which there is no combination of the power transmitting units with which the communication quality is of at least the predetermined standard, the electronic device instructs the charger to reduce an amount of transmitting power from the power transmitting units. ### Claim 7 A system comprising: a charger that includes a plurality of power transmitting units that transmit power through electromagnetic waves; and an electronic device including a power receiving unit for receiving power transmitted from the power transmitting units, a communication unit for communicating with a base station, and a storage unit for storing information of communication quality of the communication unit with the base station when the power receiving unit is receiving power, wherein the electronic device selects, from among the plurality of power transmitting units, a combination of the power transmitting units for transmitting power, based on charging efficiency of power in the power receiving unit, and based on the information of the communication quality stored in the storage unit, and wherein the charger transmits power by the power transmitting units, based on the selection by the electronic device. ### Claim 8 (depends on 7) The system according to claim 7, wherein the electronic device selects a combination of the power transmitting units with which the charging efficiency is at least a predetermined efficiency and the communication quality is of at least a predetermined standard. ### Claim 9 (depends on 8) The system according to claim 8, wherein, in a case in which there are a plurality of combinations of the power transmitting units with which the charging efficiency is at least the predetermined efficiency and the communication quality is of at least the predetermined standard, the electronic device selects a combination with which the communication quality is the best among the combinations. ### Claim 10 (depends on 8) The system according to claim 8, wherein, in a case in which there are a plurality of combinations of the power transmitting units with which the charging efficiency is at least the predetermined efficiency and the communication quality is of at least the predetermined standard, the electronic device selects a combination with which the charging efficiency is the best among the combinations. ### Claim 11 (depends on 7) The system according to claim 7, wherein, in a case in which there is no combination of the power transmitting units with which the charging efficiency is at least the predetermined efficiency and the communication quality is of at least the predetermined standard, the electronic device selects a combination with which the communication quality is the best, among the combinations with which the communication quality is below the predetermined standard. ### Claim 12 (depends on 7) The system according to claim 7, wherein the electronic device includes a notification unit for notifying that the communication quality is deteriorated, in a case in which there is no combination of the power transmitting units with which the charging efficiency is at least the predetermined efficiency and the communication quality is of at least the predetermined standard. ### Claim 13 A system comprising: a charger that includes a plurality of power transmitting units that transmit power through electromagnetic waves; and an electronic device including a power receiving unit for receiving power transmitted from the power transmitting units, a communication unit for communicating with a base station, and a storage unit for storing information of communication quality of the communication unit with the base station when the power receiving unit is receiving power; wherein the electronic device transmits the information of the communication quality stored in the storage unit to the charger, and wherein the charger transmits power by the power transmitting units, based on the information from the electronic device. ### Claim 14 A system comprising: a charger that includes a plurality of power transmitting units that transmit power through electromagnetic waves; and an electronic device including a power receiving unit for receiving power transmitted from the power transmitting units, a communication unit for communicating with a base station, and a storage unit for storing information of communication quality of the communication unit with the base station when the power receiving unit is receiving power, wherein the electronic device transmits power charging efficiency in the power receiving unit, and information of the communication quality stored in the storage unit, to the charger, and wherein the charger transmits power by the power transmitting units, based on the information from the electronic device. ### Claim 15 An electronic device, comprising: a power receiving unit that receives power transmitted through electromagnetic waves from a charger including a plurality of power transmitting units; a communication unit that communicates with a base station; a storage unit that stores information of communication quality of the communication unit with the base station when the power receiving unit is receiving power; a control unit that selects, from among the plurality of power transmitting units, a combination of the power transmitting units for transmitting power, based on the information of the communication quality stored in the storage unit; and a transmitting unit that transmits the combination selected by the control unit to a charger. ### Claim 16 An electronic device, comprising: a power receiving unit that receives power transmitted through electromagnetic waves from a charger including a plurality of power transmitting units; a communication unit that communicates with a base station; a storage unit that stores information of communication quality of the communication unit with the base station when the power receiving unit is receiving power; a control unit that selects, from among the plurality of power transmitting units, a combination of the power transmitting units for transmitting power, based on charging efficiency of power in the power receiving unit, and based on the information of the communication quality stored in the storage unit; and a transmitting unit that transmits the combination selected by the control unit to a charger. ### Claim 17 A system comprising: an electronic device; and a charger; wherein the electronic device includes: an antenna unit that transmits or receives first electromagnetic waves that are used for communication; a plurality of power receiving units that receive power through second electromagnetic waves that are used for charging; and a first control unit that controls a second power receiving unit to receive power through the second electromagnetic waves in a case in which the antenna unit transmits or receives the first electromagnetic waves, the second power receiving unit being different from the first power receiving unit that is closest to the antenna unit among the plurality of power receiving units, and wherein the charger includes: a power transmitting unit that transmits power through the second electromagnetic waves to a part or all of the plurality of power receiving units; and a second control unit that controls the power transmitting unit to transmit power through the second electromagnetic waves to the second power receiving unit in a case in which the antenna unit transmits or receives the first electromagnetic waves. ### Claim 18 (depends on 17) The system according to claim 17, wherein the first control unit includes a communication priority mode in which the antenna unit transmits or receives data, and wherein, in the communication priority mode, the first control unit uses the second power receiving unit to receive power through the second electromagnetic waves, instead of using the first power receiving unit. ### Claim 19 (depends on 18) The system according to claim 18, wherein, in a case in which power is received through the second electromagnetic waves, and received signal strength of the first electromagnetic waves received by the antenna unit is below a preset second threshold value, the first control unit sets the communication priority mode. ### Claim 20 (depends on 17) The system according to claim 17, wherein the first control unit includes a power receiving priority mode for prioritizing power receiving, and wherein, in the power receiving priority mode, at least two of the power receiving units are used to receive power. ### Claim 21 (depends on 20) The system according to claim 20, wherein the electronic device further includes a secondary battery that stores power received by at least one of the plurality of power receiving units, and wherein, in a case in which a remaining battery level of the secondary battery is below a preset first threshold value, the first control unit sets the power receiving priority mode. ### Claim 22 (depends on 17) The system according to claim 17, wherein one of the plurality of power receiving units is a contactless antenna unit utilized for contactless communication. ### Claim 23 (depends on 17) The system according to claim 17, wherein the electronic device includes a transmitting unit that transmits a control signal for controlling power to be transmitted through the second electromagnetic waves toward the second power receiving unit in the communication priority mode, wherein the charger further includes a receiving unit that receives the control signal, and wherein the second control unit controls the power transmitting unit, based on the control signal. ### Claim 24 (depends on 23) The system as claimed in claim 23, wherein the power transmitting unit receives the control signal. ### Claim 25 (depends on 24) The system as claimed in claim 24, wherein the power transmitting unit receives the control signal through third electromagnetic waves different in frequency from the second electromagnetic waves. ### Claim 26 An electronic device, comprising: an antenna unit that transmits or receives first electromagnetic waves that are used for communication; a plurality of power receiving units that receive power through second electromagnetic waves that are used for charging; and a control unit that controls a second power receiving unit to receive power through the second electromagnetic waves in a case in which the antenna unit transmits or receives the first electromagnetic waves, the second power receiving unit being different from the first power receiving unit that is closest to the antenna unit among the plurality of power receiving units. ### Claim 27 A system comprising: a charger that includes a predetermined surface having a first area, and transmits power through electromagnetic waves; and an electronic device that receives power from the charger, and receives power with at least a predetermined efficiency when the electronic device is disposed in the first area, wherein the electronic device includes: an image capturing unit; a control unit that calculates its relative position with respect to the first area, based on an image of the charger captured by the image capturing unit; and a notification unit that notifies information regarding the relative position calculated by the control unit. ### Claim 28 (depends on 27) The system according to claim 27, wherein the notification unit is a display unit, and wherein the control unit causes the display unit to display a reference image that is based on a position where a power receiving unit for receiving power through electromagnetic waves from the charger is disposed, and a target image that is based on the relative position thus calculated. ### Claim 29 (depends on 28) The system according to claim 28, wherein the control unit causes the display unit to display the target image that is identical in shape with the reference image. ### Claim 30 (depends on 27) The system according to claim 27, wherein the charger is marked with a mark indicating a coil position, the coil being for transmitting electromagnetic waves, and wherein the control unit calculates the relative position, based on the mark captured by the image capturing unit. ### Claim 31 (depends on 27) The system according to claim 27, wherein the charger is marked with a mark indicating a coil position, the coil being for transmitting electromagnetic waves, and a single or a plurality of circles at a certain interval around the mark, and wherein the control unit calculates the relative position, based on the circle(s) captured by the image capturing unit. ### Claim 32 (depends on 27) The system according to claim 27, wherein the charger is marked with a position image indicating a coil position, the coil being for transmitting electromagnetic waves, and wherein the control unit calculates the relative position, based on the position image captured by the image capturing unit. ### Claim 33 (depends on 28) The system according to claim 28, wherein, in a case of detecting an operation to start charging, the control unit calculates the relative position based on the image of the charger captured by the image capturing unit, and causes the display unit to display the reference image and the target image. ### Claim 34 (depends on 28) The system according to claim 28, wherein the control unit terminates the displaying of the reference image and the target image on the display unit, in a case in which the electronic device is placed on the charger. ### Claim 35 (depends on 28) The system according to claim 28, wherein the control unit terminates the displaying of the reference image and the target image on the display unit, in a case in which a charging unit charges a rechargeable battery with at least a predetermined power receiving efficiency. ### Claim 36 (depends on 28) The system according to claim 28, wherein the control unit terminates the displaying of the reference image and the target image on the display unit, in a case in which the electronic device is proximate to the charger at a distance equal to or shorter than a predetermined distance. ### Claim 37 (depends on 36) The system according to claim 36, wherein the control unit detects the predetermined distance by a contrast detection method or a phase difference detection method which is based on the image captured by the image capturing unit. ### Claim 38 (depends on 34) The system according to claim 34, wherein the control unit causes the display unit to display the reference image and the target image again, after terminating the displaying of the reference image and the target image on the display unit, in a case in which power receiving efficiency for a rechargeable battery charged by a charging unit is reduced to be no more than the power receiving efficiency. ### Claim 39 (depends on 28) The system according to claim 28, wherein the control unit acquires placement information of the charger, and in a case in which the electronic device is proximate to the charger at a distance equal to or shorter than a predetermined distance based on the placement information, the control unit causes the image capturing unit to capture an image of the charger, calculates the relative position based on the image, and causes the display unit to display the reference image and the target image. ### Claim 40 (depends on 28) The system according to claim 28, wherein the charger includes a communication unit that outputs a signal, and wherein, in a case in which the electronic device is proximate to the charger at a distance equal to or shorter than a predetermined distance as a result of detecting the signal that is output from the communication unit, the control unit causes the image capturing unit to capture an image of the charger, calculates the relative position based on the image, and causes the display unit to display the reference image and the target image. ### Claim 41 (depends on 39) The system according to claim 39, wherein the control unit causes the display unit to display a message for prompting a user to start charging, in a case in which remaining level of a rechargeable battery is no more than a predetermined value, and the electronic device is proximate to the charger at a distance equal to or shorter than a predetermined distance. ### Claim 42 An electronic device that receives power from a charger, the electronic device comprising: an image capturing unit; a control unit that calculates its relative position with respect to a first area, based on an image of the charger captured by the image capturing unit; and a notification unit that notifies information regarding the relative position calculated by the control unit. ### Claim 43 A charger that includes a predetermined surface having a first area, and transmits power through electromagnetic waves to the electronic device with at least a predetermined efficiency, in a case in which an electronic device including an image capturing unit is placed in the first area, wherein the charger is marked with a mark or a position image to be captured by the image capturing unit, for the electronic device to calculate relative positions of the first area and the electronic device.