# US 11,077,828 B2 · Vehicle smart entry system and method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,828 B2 - Document ID: US11077828B2 - Status: Granted - Kind: B2 - Application number: 16/684,036 - Filed: 2019-11-14 - Published: 2021-01-07 - Granted: 2021-08-03 - Earliest claimed: 2019-07-04 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Min Gu Park - Web page: https://patentgrep.com/patent/US11077828B2 ## CPC - B60R 25/24: using electronic identifiers containing a code not memorised by the user - 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 25/305: {using a camera} - H04W 12/04: Key management, e.g. using generic bootstrapping architecture [GBA] - H04W 12/06: Authentication - B60R 2325/205: Mobile phones - G07C 2009/00555: {comprising means to detect or avoid relay attacks} - H04W 12/122: Counter-measures against attacks; Protection against rogue devices - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - 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 ## Abstract A vehicle smart entry system and a method of operating the same may authenticate not only a smart key of a user who attempts to ride in a vehicle, but also a smartphone of the user, thereby improving security. The smart entry system includes a first communication device that communicates with a smart key, a second communication device that communicates with the smart key and a smartphone, and a controller that authenticates a user using a time stamp value received from the smart key through the first communication device, and a time stamp value received from the smart key through the second communication device and a time stamp value received from the smartphone through the second communication device. ## Claims ### Claim 1 A vehicle smart entry system comprising: a first communication device configured to communicate with a smart key; a second communication device configured to communicate with the smart key and a smartphone; a controller configured to authenticate a user using a first time stamp value received from the smart key through the first communication device, and a second time stamp value received from the smart key through the second communication device and a third time stamp value received from the smartphone through the second communication device. ### Claim 2 (depends on 1) The vehicle smart entry system of claim 1, wherein a period at which the first communication device communicates with the smart key is identical to a period at which the second communication device communicates with the smart key and the smartphone. ### Claim 3 (depends on 2) The vehicle smart entry system of claim 2, wherein the first communication device is configured to: insert a time stamp into a Low Frequency (LF) frame, transmit the LF frame to the smart key, and receive a time stamp value of the LF frame received from the smart key. ### Claim 4 (depends on 3) The vehicle smart entry system of claim 3, wherein the second communication device is configured to: insert a time stamp into a short-range communication frame, transmit the short-range communication frame to the smart key and the smartphone, receive a time stamp value of the short-range communication frame received from the smart key, and receive the time stamp value of the short-range communication frame received from the smartphone. ### Claim 5 (depends on 4) The vehicle smart entry system of claim 4, wherein the controller is configured to authenticate the user as normal when the first time stamp value received through the first communication device, the second time stamp value received from the smart key through the second communication device, and the third time stamp value received from the smartphone through the second communication device are identical to one another. ### Claim 6 (depends on 4) The vehicle smart entry system of claim 4, wherein the controller is configured to authenticate the user as normal when the first time stamp value received through the first communication device and the second time stamp value received from the smart key through the second communication device are identical to each other. ### Claim 7 (depends on 4) The vehicle smart entry system of claim 4, wherein the controller is configured to activate a Drive Video Record System (DVRS) and transmit a warning message to a smartphone of an owner of a vehicle when the first time stamp value received through the first communication device and the second time stamp value received from the smart key through the second communication device are not identical to each other. ### Claim 8 A method of operating a vehicle smart entry system comprising: communicating, by a first communication device, with a smart key; communicating, by a second communication device, with the smart key and a smartphone; and authenticating, by a controller, a user based on a first time stamp value received from the smart key through the first communication device, a second time stamp value received from the smart key through the second communication device, and a third time stamp value received from the smartphone through the second communication device. ### Claim 9 (depends on 8) The method of claim 8, wherein a period at which the first communication device communicates with the smart key is identical to a period at which the second communication device communicates with the smart key and the smartphone. ### Claim 10 (depends on 9) The method of claim 9, wherein communicating, by the first communication device, with the smart key includes: inserting a time stamp into a Low Frequency (LF) frame and transmitting the LF frame to the smart key; and receiving a time stamp value of the LF frame received from the smart key. ### Claim 11 (depends on 10) The method of claim 10, wherein communicating, by the second communication device, with the smart key and the smartphone includes: inserting a time stamp into a short-range communication frame and transmitting the short-range communication frame to the smart key and the smartphone; receiving a time stamp value of the short-range communication frame received from the smart key; and receiving the time stamp value of the short-range communication frame received from the smartphone. ### Claim 12 (depends on 11) The method of claim 11, wherein authenticating the user includes: authenticating the user as normal when the first time stamp value received through the first communication device, the second time stamp value received from the smart key through the second communication device, and the third time stamp value received from the smartphone through the second communication device are identical to one another. ### Claim 13 (depends on 11) The method of claim 11, wherein authenticating the user includes: authenticating the user as normal when the first time stamp value received through the first communication device and the second time stamp value received from the smart key through the second communication device are identical to each other. ### Claim 14 (depends on 11) The method of claim 11, wherein authenticating the user includes: activating a Drive Video Record System (DVRS) and transmitting a warning message to a smartphone of an owner of a vehicle when the first time stamp value received through the first communication device, and the second time stamp value received from the smart key through the second communication device are not identical to each other.