# US 10,767,398 B2 · Vehicle door handle having a control circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,398 B2 - Document ID: US10767398B2 - Status: Granted - Kind: B2 - Application number: 16/091,016 - Filed: 2017-04-06 - Published: 2019-02-28 - Granted: 2020-09-08 - Earliest claimed: 2016-04-07 - Assignees: Huf Huelsbeck & Fuerst GmbH & Co. KG - Applicants: Huf HüLsbeck & FüRst GmbH & Co. KG - Inventors: Berthold Sieg - Web page: https://patentgrep.com/patent/US10767398B2 ## CPC - E05B 81/76: Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles - B60R 25/20: Means to switch the anti-theft system on or off - G07C 9/00309: {operated with bidirectional data transmission between data carrier and locks} - B60R 25/00: Fittings or systems for preventing or indicating unauthorised use or theft of vehicles (locks for vehicles E05B77/00-E05B85/00) - B60R 25/10: actuating a signalling device - B60R 25/1001: {Alarm systems associated with another car fitting or mechanism, e.g. door lock or knob, pedals (features related to the general power supply B60R25/1018)} - B60R 25/102: a signal being sent to a remote location, e.g. a radio signal being transmitted to a police station, a security company or the owner - B60R 2325/10: Communication protocols, communication systems of vehicle anti-theft devices - B60R 2325/20: Communication devices for vehicle anti-theft devices - B60R 2325/30: Vehicles applying the vehicle anti-theft devices - B60W 50/08: Interaction between the driver and the control system - B63B 2035/008: {remotely controlled} - E05Y 2900/531: Doors - G07C 9/00944: {Details of construction or manufacture} - G07C 2009/00793: {by Hertzian waves} - G07C 2209/65: using means for sensing the user's hand - E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract A vehicle door handle circuit coupled to a vehicle control unit includes a transmission antenna circuit, a control circuit and an actuation sensor via which the door handle circuit receives DC voltage for supplying the control circuit or AC voltage for controlling the antenna circuit. The antenna circuit includes a series oscillating circuit with an inductor and a capacitor. A series circuit including a first capacitor and a first rectifier is connected between two contacts and in parallel with the antenna circuit allows part of the AC voltage signal to be used for the voltage supply of the control circuit. A second rectifier connects one of the two contacts to the series circuit. A third rectifier is also provided in order to feed DC voltage to the vehicle control unit. ## Claims ### Claim 1 A vehicle door handle circuit in a vehicle door handle, configured for coupling with a vehicle-sided control device, the vehicle door handle circuit comprising an antenna circuit for emitting a signal to be sent, a control circuit and at least one actuation sensor, the control circuit being coupled with the actuation sensor for detecting an actuation, the antenna circuit comprising a series resonant circuit having a resonant circuit inductance and a resonant circuit capacitance, the vehicle door handle circuit having two contacts for coupling to the vehicle-sided control device via only two connection cables, via which the vehicle door handle circuit can receive a direct-current supply voltage for supplying the control circuit or an alternating-current voltage signal for driving the antenna circuit from the vehicle-sided control device, the antenna circuit being coupled between the two contacts, the control circuit comprising a first and a second voltage supply junction each coupled to one of the two contacts, wherein, for the purpose of using a portion of the alternating-current voltage signal for the voltage supply of the control circuit, a series circuit, which comprises a first capacitor and a first rectifier connected in series, is connected between the two contacts and in parallel to the antenna circuit, wherein the first rectifier is connected in the reverse-biased direction with regard to the direct-current supply voltage, and a tap of the series circuit, located between the first capacitor and the first rectifier, is coupled with the first voltage supply junction of the control circuit, wherein at least one second rectifier is coupled between the tap and the first voltage supply junction and/or between the second voltage supply junction and the node, which connects one of the two contacts to the series circuit on the side of the first rectifier, wherein the second rectifier is coupled to the tap or the node, respectively, in the opposite polarity vis-à-vis the first rectifier and wherein, for feeding the direct-current supply voltage of the vehicle-sided control device, a third rectifier is coupled between the contact of the two contacts, which is connected to the series circuit on the side of the first capacitor, and the first voltage supply junction of the control circuit, wherein the third rectifier is connected in the forward-biased direction with regard to the direct-current supply voltage. ### Claim 2 (depends on 1) The vehicle door handle circuit according to claim 1, wherein the first capacitor has a capacitance of 10 nF to 500 nF. ### Claim 3 (depends on 2) The vehicle door handle circuit according to claim 2, wherein a second capacitor is connected between the voltage supply junctions of the control circuit. ### Claim 4 (depends on 3) The vehicle door handle circuit according to claim 3, wherein the second capacitor has a capacitance of 0.5 μF to 50 μF. ### Claim 5 (depends on 1) The vehicle door handle circuit according to claim 1, wherein the series circuit comprising the first capacitor and the first rectifier comprises a first ohmic resistor. ### Claim 6 (depends on 5) The vehicle door handle circuit according to claim 5, wherein the third rectifier is connected in series with at least one second ohmic resistor. ### Claim 7 (depends on 6) The vehicle door handle circuit according to claim 6, wherein a second capacitor is connected between the voltage supply junctions of the control circuit. ### Claim 8 (depends on 1) The vehicle door handle circuit according to claim 1, wherein the tap is coupled to the third rectifier in such a manner that the third rectifier is connected in parallel to the first capacitor, wherein the second rectifier is coupled between the tap and the first voltage supply junction or between the second voltage supply junction and the node, which connects one of the two contacts to the series circuit on the side of the first rectifier. ### Claim 9 (depends on 8) The vehicle door handle circuit according to claim 8, wherein a second capacitor is connected between the voltage supply junctions of the control circuit. ### Claim 10 (depends on 9) The vehicle door handle circuit according to claim 9, wherein the series circuit comprising the first capacitor and the first rectifier comprises a first ohmic resistor. ### Claim 11 (depends on 10) The vehicle door handle circuit according to claim 10, wherein the third rectifier is connected in series with at least one second ohmic resistor. ### Claim 12 (depends on 1) The vehicle door handle circuit according to claim 1, wherein the tap is coupled via the second rectifier to the third rectifier in such a manner that the third rectifier is connected in parallel to a series connection of the first capacitor and the second rectifier. ### Claim 13 (depends on 12) The vehicle door handle circuit according to claim 12, wherein a second capacitor is connected between the voltage supply junctions of the control circuit. ### Claim 14 (depends on 12) The vehicle door handle circuit according to claim 12, wherein the series circuit comprising the first capacitor and the first rectifier comprises a first ohmic resistor. ### Claim 15 (depends on 14) The vehicle door handle circuit according to claim 14, wherein the third rectifier is connected in series with at least one second ohmic resistor. ### Claim 16 (depends on 12) The vehicle door handle circuit according to claim 12, wherein an ohmic resistor is coupled between one of the two contacts and the node connecting the series circuit to the third rectifier. ### Claim 17 (depends on 16) The vehicle door handle circuit according to claim 16, wherein a second capacitor is connected between the voltage supply junctions of the control circuit. ### Claim 18 (depends on 17) The vehicle door handle circuit according to claim 17, wherein the first capacitor has a capacitance of 10 nF to 500 nF. ### Claim 19 (depends on 18) The vehicle door handle circuit according to claim 18, wherein the second capacitor has a capacitance of 0.5 μF to 50 μF.