# US 2014/0155125 A1 · Radio-frequency communication device comprising a power supply of assisted radio-frequency origin > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155125 A1 - Document ID: US20140155125A1 - Status: Published application - Kind: A1 - Application number: 14/114,912 - Filed: 2012-04-27 - Published: 2014-06-05 - Earliest claimed: 2011-05-06 - Assignees: Gemalto SA - Inventors: Michel Thill; Christophe Arnoux - Web page: https://patentgrep.com/patent/US20140155125A1 ## CPC - H04M 1/0262: {for a battery compartment} - G06K 19/0723: {the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs} - G06K 19/0701: {at least one of the integrated circuit chips comprising an arrangement for power management} - H04B 5/79: for data transfer in combination with power transfer - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - H04B: TRANSMISSION ## Abstract A radio-frequency communication device includes connection means electrically connecting an integrated circuit component, or intended for this purpose; and selection means for selecting an electromagnetic current power supply for the component. The device includes an alternative power supply source for powering the component during the reception of an electromagnetic field as soon as the electromagnetic power supply current received by the component is insufficient. ## Claims ### Claim 1 Radio-frequency communication device comprising: connection means connecting or intended to connect electrically an integrated circuit component, means for supplying said component with current of electromagnetic origin, and an alternative supply source for supplying said component when an electromagnetic field is received as soon as the supply current of electromagnetic origin received by the component is insufficient. ### Claim 2 (depends on 1) Radio-frequency communication device according to claim 1, further comprising: a mode for communication in contactless card emulation or equivalent configuration, said mode having a configuration of supply of the component by a source of electromagnetic origin in substitution for a first source comprising a main battery, and means for maintaining a level of supply of current to the component by said alternative source, directly with it, in the case of a requirement for supply current in the course of a radio-frequency communication in said emulation mode. ### Claim 3 (depends on 1) Device according to claim 1, wherein said alternative source comprises a secondary battery and/or at least one capacitor. ### Claim 4 (depends on 1) Device according to claim 1, wherein the alternative source acts in the case of detection of a functioning mode in which the supply of current is of electromagnetic origin. ### Claim 5 (depends on 1) Device according to claim 1, wherein said component comprises an identification module for a subscriber to a telecommunication network or an integrated circuit chip or a card of the UICC type. ### Claim 6 (depends on 1) Device according to claim 1, wherein the device comprises an NFC controller and a connection connecting or intended to connect the NFC controller to the component in order provide the component, with a supply of electromagnetic origin, and a direct connection of the alternative source to the component or via a means managing the alternative supply and/or means for conditioning said alternative source. ### Claim 7 (depends on 2) Device according to claim 2, wherein the device comprises a means for managing an alternative supply for managing an alternative direct supply for the component, a circuit for charging the alternative source connected to the main battery, and an electromagnetic field detection circuit acting with said management means for inhibiting a discharging of the alternative source to the component in the absence of detection of electromagnetic field and for enabling discharging in the contrary case. ### Claim 8 (depends on 3) Device according to claim 3, wherein the battery is of the flexible or supple type. ### Claim 9 (depends on 3) Device according to claim 3, wherein the battery or at least the capacitor is fixed to a portion of a flexible NFC device comprising the antenna. ### Claim 10 (depends on 2) Device according to claim 2, further comprising an NFC controller, and connection pins for connecting firstly a main supply battery of a host device and secondly a subscriber identification module. ### Claim 11 (depends on 3) Device according to claim 3, wherein the battery and/or at least the capacitor and/or said alternative supply management means are fixed to or integrated in an electronic component comprising an NFC controller and/or a subscriber identification module. ### Claim 12 (depends on 11) Radio-frequency communication device according to claim 11, wherein the NFC controller is configured to deliver or use field presence information and/or information relating to a main battery energy level absent or present so as to put the alternative source in service or not for supplying the component. ### Claim 13 Radio-frequency communication method using at least one integrated circuit component and means for supplying current of electromagnetic origin for supplying said component, comprising a step of providing a supply to the component by means of an alternative source when an electromagnetic field is received as soon as the supply current of electromagnetic origin received by the component is insufficient. ### Claim 14 (depends on 13) Radio-frequency communication method according to claim 13, the communication taking place in a contactless card emulation mode or equivalent configuration, said mode having a configuration of supply of the component by a source of electromagnetic origin in substitution for a first source comprising a battery, comprising: a step according to which the component is provided with an alternative supply source, such as a battery or at least one capacitor, and a step of maintaining a level of supply of current to the component by said alternative source, directly with it, in the case of a requirement for supply current during a radio-frequency communication in this emulation mode.