Vehicle key search system and method

Abstract

The present invention relates to a vehicle key search system and method. According to an embodiment, a vehicle key search system is provided, which includes a vehicle and a vehicle key, the vehicle including a processor configured to output a vehicle key search instruction in response to a user input, and a communication device configured to output a vehicle key search signal in response to the vehicle key search instruction, the vehicle key, upon receiving the vehicle key search signal, sending a response signal corresponding to the vehicle key search signal back to the communication device, and externally outputting at least one of a visual signal and an audible signal.

Description

Technical Field

[0001] The implementation plan involves a vehicle key search system and method. Background Technology

[0002] The following situation often occurs: vehicle smart keys or digital keys, mobile phones, etc. are left in places where the location is difficult to determine, such as inside the car, office, or home, and therefore cannot be found.

[0003] Recently, with the rapid increase in the use of smart keys or digital keys, there may be problems where drivers are unable to use or enter the vehicle in an emergency due to locked doors when the vehicle key is not found.

[0004] In addition, lost vehicle keys may lead to vehicle theft or the risk of personal information being leaked via mobile phone. Summary of the Invention

[0005] This invention aims to provide a vehicle key search system and method that can identify the location of a smart key or digital key.

[0006] Therefore, unnecessary time wasted searching for vehicle keys can be prevented.

[0007] In addition, it can prevent the risk of vehicle theft.

[0008] In addition, it can save the cost and time required to obtain a replacement key.

[0009] In addition, it can prevent personal information from being leaked via mobile phone.

[0010] According to an implementation scheme, a vehicle key search system is provided, comprising a vehicle and a vehicle key. The vehicle includes a processor and a communication device. The processor is configured to output a vehicle key search command in response to user input. The communication device is configured to output a vehicle key search signal in response to the vehicle key search command. Upon receiving the vehicle key search signal, the vehicle key sends a response signal corresponding to the vehicle key search signal back to the communication device and externally outputs at least one visual signal and an auditory signal.

[0011] The communication device can use a low-frequency (LF) antenna to output a key search signal.

[0012] The communication device can use multiple LF antennas to sequentially output key search signals under the control of the processor.

[0013] When a response signal is received, the communication device can stop outputting the key search signal.

[0014] The processor can display the area of ​​the vehicle key search signal corresponding to the output response signal via an internal / external output device.

[0015] The key search signal may have a different data frame than the signal used when performing the Passive-Entry-Passive-Start (PEPS) function.

[0016] The communication device can use a Bluetooth communication module to output a key search signal.

[0017] The processor can use the response signal to measure the position of the vehicle key.

[0018] The processor can display the measured location of the vehicle key via an internal / external output device.

[0019] If no response signal is received within a preset time after the key search signal is output, the processor can output a message through the vehicle's internal / external output device.

[0020] According to the implementation scheme, a vehicle key search system is provided, which includes a first vehicle key and a second vehicle key. The first vehicle key outputs a vehicle key search signal in response to user input. When the second vehicle key receives the vehicle key search signal, it sends a response signal corresponding to the vehicle key search signal back to the first vehicle key and outputs at least one visual signal and an auditory signal externally.

[0021] The first vehicle key can be a smart key or a digital key, and the second vehicle key can be a key of a different type from the first vehicle key, either a smart key or a digital key.

[0022] According to the implementation scheme, a vehicle key search method is provided, which includes: a vehicle outputting a vehicle key search command in response to user input; a vehicle outputting a vehicle key search signal in response to the vehicle key search command; a vehicle key receiving the vehicle key search signal; a vehicle key sending a response signal corresponding to the vehicle key search signal; and a vehicle key externally outputting at least one of a visual signal and an auditory signal.

[0023] Outputting the key search signal may include using multiple low-frequency (LF) antennas to sequentially output the key search signal.

[0024] The vehicle key search method may further include: stopping the output of the key search signal when a response signal is received.

[0025] The vehicle key search method may further include: when a response signal is received, displaying an area that outputs a vehicle key search signal corresponding to the response signal via an internal / external output device of the vehicle.

[0026] Outputting a key search signal may include using a Bluetooth communication module to output a key search signal.

[0027] The vehicle key search method may further include: when a response signal is received, using the response signal to measure the location of the vehicle key.

[0028] The vehicle key search method may further include: displaying the measured location of the vehicle key via an in-vehicle / out-of-vehicle output device.

[0029] The vehicle key search method may further include: when no response signal is received within a preset time after the key search signal is output, the vehicle outputs a message through an internal / external output device. Attached Figure Description

[0030] The above and other objects, features and advantages of the present invention will become more apparent to those skilled in the art from the detailed description of exemplary embodiments of the invention with reference to the accompanying drawings, wherein:

[0031] Figure 1 It is a schematic diagram used to describe the vehicle according to the implementation plan;

[0032] Figure 2 This is a block diagram illustrating the configuration of the vehicle according to the implementation scheme;

[0033] Figure 3 This is a block diagram illustrating the configuration of a user terminal according to the implementation scheme;

[0034] Figure 4 This is a block diagram illustrating the configuration of the FOB key according to the implementation scheme;

[0035] Figure 5 This is a block diagram illustrating the configuration of a vehicle key search system according to an implementation scheme;

[0036] Figures 6 to 11 It is a schematic diagram used to describe the operation of the processor according to the implementation scheme;

[0037] Figure 12 This is a schematic diagram illustrating a vehicle key search system according to another embodiment; and

[0038] Figures 13 to 15 This is a flowchart of the vehicle key search method according to the implementation plan. Detailed Implementation

[0039] In the following, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0040] However, the technical spirit of the present invention is not limited to the described embodiments, but can be implemented in various different forms, and one or more components in the embodiments can be used by selective coupling or substitution without departing from the scope of the technical spirit of the present invention.

[0041] Furthermore, unless explicitly defined and described, the terms (including technical and scientific terms) used in embodiments of the present invention may be interpreted as having meanings that would be commonly understood by one of ordinary skill in the art to which this invention pertains, and the meanings of commonly used terms (such as terms defined in dictionaries) may be interpreted based on the contextual meaning of the relevant art.

[0042] Furthermore, the terminology used in the embodiments of the present invention is for describing the embodiments and is not intended to limit the invention.

[0043] In the specification, unless otherwise stated in the phrase, the singular form may include the plural form, and when described as “at least one (or one or more) of A, B and C”, it may include one or more of all possible combinations of A, B and C.

[0044] Furthermore, terms such as first, second, A, B, (a) and (b) can be used to describe components of embodiments of the present invention.

[0045] These terms are used only to distinguish one component from another, and the nature, order, sequence, etc. of the corresponding components are not limited by these terms.

[0046] Furthermore, when the first component is described as "connected", "joined", or "attached" to the second component, it can include not only cases where the first component is directly connected, joined, or attached to the second component, but also cases where the first component is "connected", "joined", or "attached" to the second component through other components existing between the first component and the second component.

[0047] Furthermore, when the first component is described as being formed or disposed "above" or "below" the second component, "above" or "below" can include not only the case where the two components are in direct contact with each other, but also the case where one or more third components are formed or disposed between the two components. Additionally, when described as "above" or "below," it can include not only the meaning based on being above a component, but also the meaning based on being below a component.

[0048] In the following description, embodiments will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be indicated by the same reference numerals regardless of the reference numerals used, and repeated descriptions thereof will be omitted.

[0049] For the purposes of this application and claims, the exemplary phrases “at least one of A; B; or C” or “at least one of A, B, or C” are used, which means “at least one A, or at least one B, or at least one C, or any combination of at least one A, at least one B, and at least one C.” Furthermore, exemplary phrases such as “A, B, and C,” “A, B, or C,” “at least one of A, B, and C,” “at least one of A, B, or C,” etc., as used herein, may refer to each of the enumerated items or all possible combinations of the enumerated items. For example, “at least one of A or B” may mean (1) at least one A; (2) at least one B; or (3) at least one A and at least one B.

[0050] Throughout this invention, references to components, units, or modules generally refer to items that can be logically combined to perform a function or a set of related functions. The same reference numerals are generally intended to refer to the same or similar components. Components, units, and modules can be implemented in software, hardware, or a combination of software and hardware. The components, units, modules, and / or functions described above can be implemented and / or performed by one or more processors. For example, components, units, and / or modules may include processors, microprocessors, graphics processing units, logic circuits, application-specific circuits (ASICs), application-specific integrated circuits (ASICs), programmable array logic, field-programmable gate arrays (FPGAs), controllers, microcontrollers, and / or other suitable hardware. Components, units, and / or modules may also include, for example, software control modules implemented using processors or logic circuits. Components, units, and / or modules may include memory or otherwise accessible memory, such as one or more non-volatile computer-readable storage media, such as random access memory, read-only memory, electrically erasable programmable read-only memory, erasable programmable read-only memory, flash memory / other memory devices, data registers, databases, and / or other suitable hardware. One or more storage media may include any or all tangible memory or associated modules (such as various semiconductor memories, tape drives, disk drives, etc.) of a computer, processor, etc., capable of providing non-volatile memory for software programming at any time.

[0051] Figure 1 It is a schematic diagram used to describe the vehicle according to the implementation plan. Figure 2 This is a block diagram illustrating the configuration of the vehicle according to the implementation scheme. (Reference) Figure 1 and Figure 2According to the implementation scheme, vehicle 1 may include: an audio video navigation and telematics (AVNT) 100, a processor 200, a communication device 300, a memory 400, and an in-vehicle / out-of-vehicle output device 500.

[0052] Vehicle 1 may include AVNT 100, which is located on the central panel and controls audio devices, air conditioning, Bluetooth devices, seat heaters, etc.

[0053] An input device for receiving user input may be provided on the central panel or AVNT 100, and a display device for displaying operation information of at least one function performed in vehicle 1 may also be provided on the central panel or AVNT 100.

[0054] Input devices may include hardware devices such as various buttons or switches, pedals, keyboards, mice, trackballs, various joysticks, handles or sticks.

[0055] In addition, the input device may include a graphical user interface (GUI), i.e., a software device such as a touchpad. The touchpad may be implemented as a touch screen panel (TSP) that forms a layered structure with the display panel of the display device.

[0056] The display device can be used as a user interface. The processor enables the display device to show the vehicle's operating status, control status, route / traffic information, remaining energy information, driver requests, etc. Furthermore, the display device can be configured as a touchscreen that can detect driver input to receive requests from the driver instructing the processor.

[0057] The vehicle's interior may include a key slot into which a FOB or card-type remote control can be inserted. This key slot can be located on the dashboard or center panel, and positioned adjacent to the driver's seat.

[0058] When the remote control is inserted into the key slot or when the vehicle completes authentication with the remote control or terminal via a wireless communication network, vehicle 1 can send and receive information with the remote control or terminal.

[0059] The vehicle's interior may further include a start button that receives on / off commands. Therefore, after authentication with the remote control or terminal is complete, the vehicle starts when the user presses the start button.

[0060] The vehicle 1 may further include a communication device for sending and receiving information with at least one electronic device and terminal 20 disposed in the vehicle.

[0061] The communication device 300 may include one or more components that enable communication between vehicle components, and may include, for example, at least one of a short-range communication module, a wired communication module, and a wireless communication module.

[0062] In addition, the communication device 300 may include at least one wired communication module and one wireless communication module for communicating with the user terminal 20 and the server.

[0063] For example, a short-range communication module may include various short-range communication modules for sending and receiving signals over short distances using wireless communication networks, such as Bluetooth modules, infrared communication modules, radio frequency (RF) identification communication modules, wireless local area network (WLAN) communication modules, near-field communication (NFC) communication modules, or Zigbee communication modules.

[0064] For example, wired communication modules can include not only various wired communication modules, but also various cable communication modules. Wired communication modules include Controller Area Network (CAN) communication modules, Local Area Network (LAN) modules, Wide Area Network (WAN) modules, and Value Added Network (VAN) modules. Cable communication modules include Universal Serial Bus (USB), High Definition Multimedia Interface (HDMI), Digital Visual Interface (DVI), Recommended Standard 232 (RS-232), Power Line Communication, and Plain Old Telephone Service (POTS).

[0065] For example, Controller Area Network (CAN) can include communication protocols designed for real-time data exchange between microcontrollers and devices within vehicle and industrial systems. CAN enables multiple electronic control units to communicate with each other without a host, making it suitable for applications where reliable and high-speed communication is critical.

[0066] For example, a Value Added Network (VAN) can include a dedicated network that provides businesses with a secure and reliable communication channel for exchanging data and documents. VANs can provide services (e.g., data encryption, format conversion, message routing, or tracking) to ensure that business documents (e.g., invoices, purchase orders, or shipping notices) can be transmitted efficiently and / or securely between trading partners.

[0067] The wired communication module may further include a Local Interconnect Network (LIN) communication module. For example, the LIN may include a low-cost serial communication protocol that can be used in vehicle systems to connect electronic components (e.g., sensors, actuators, or control units). For example, for simplicity and / or cost-effectiveness, LIN can manage functions that do not require high-speed data transmission (e.g., window control, seat adjustment, lighting, or climate control). LIN can operate in a single-master multiple-slave architecture, where one master node can coordinate communication with multiple slave nodes.

[0068] In addition to Wi-Fi and Wireless Broadband (WiBro) modules, wireless communication modules may also include wireless communication modules that support various wireless communication methods, such as Global System for Mobile communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Universal Mobile Telecommunications System (UMTS), Time Division Multiple Access (TDMA), and Long Term Evolution (LTE).

[0069] User terminal 20 communicates with vehicle 1. User terminal 20 receives at least one of the following commands as user input: door lock and unlock command, tailgate lock and unlock command, headlight illumination command, and start command. User terminal 20 also sends information corresponding to the received commands to vehicle. User terminal 20 can also send information corresponding to the received commands as communication signals to vehicle.

[0070] User terminal 20 can be implemented as a computer or portable terminal that can be connected to the vehicle via network communication.

[0071] Here, for example, a computer may include a laptop, desktop computer, laptop computer, tablet PC, board PC, etc., equipped with a web browser, and a portable terminal is a wireless communication device that ensures portability and mobility, and may include, for example, any type of handheld-based wireless communication device (such as a Personal Communication System (PCS), GSM, Personal Digital Cellular (PDC), Personal Handyphone System (PHS), Personal Digital Assistant (PDA), International Mobile Telecommunication (IMT)-2000, CDMA-2000, WCDMA, and Wireless Broadband Internet (WiBro) terminal) and smartphone, as well as wearable devices (such as watches, rings, bracelets, anklets, necklaces, glasses, contact lenses, or head-mounted devices (HMD)).

[0072] In the implementation scheme, user terminal 20 can communicate with the vehicle via Bluetooth Low Energy (BLE) communication. User terminal 20 can perform communication based on the Bluetooth beacon standard (iBeacon).

[0073] AVNT 100 refers to an in-vehicle information and entertainment system, and can be a system integrating navigation, audio, video, and communication functions. AVNT 100 can output messages generated by processor 200 in a visual, auditory, or at least a combination thereof manner.

[0074] The AVNT 100, processor 200, and communication device 300 can be implemented as a single module, but in this implementation, they will be described separately for ease of description.

[0075] The AVNT 100 can be a component used to provide a hardware interface for integration into a vehicle system. The AVNT 100 can perform system control over screens, buttons, and various integrated information and entertainment functions.

[0076] The AVNT 100 can be installed in the center of the vehicle's dashboard or on the console to provide a vehicle information and entertainment interface. The information and entertainment system can include an AM / FM radio, satellite radio, DVD / CD, cassette tape, USB MP3 player, dashcam, GPS navigation, Bluetooth, Wi-Fi, etc., and also provides status information for the vehicle systems. Furthermore, the AVNT 100 can perform functions such as voice control and motion recognition.

[0077] Processor 200 can control the vehicle body, such as the vehicle itself, doors, and windows, or a key (digital key, smartphone key, and FOB). The processor can execute body control functions (e.g., Body Control Module (BCM)), Smart Key (SMK) entry / start functions, tire pressure monitoring functions (e.g., Tire Pressure Monitoring System (TPMS)), immobilizer (IMMO) functions, digital key authentication (e.g., Identity Authentication Unit (IAU)), and automatic parking-related control functions (e.g., Parking Distance Warning (PDW)). For example, processor 200 can be a Body Domain Controller (BDC), but is not limited to this, and processor 200 can be used to include a platform controller that provides electronic convenience functions to the body domain area.

[0078] The communication device 300 can use Bluetooth signals to perform pairing between the user terminal 20 and the vehicle 1.

[0079] The communication device 300 may include a transceiver and perform short-range communication with the user terminal 20. The transceiver is used to send and receive information using an antenna, communication circuitry, a communication processor, etc. According to embodiments, the communication device 300 may perform Bluetooth communication, NFC communication, or UWB communication. The communication device 300 may be positioned near the door handle of the vehicle 1 to request authentication information when it is determined that the user terminal is approaching within a predetermined distance.

[0080] In the Bluetooth standard, Bluetooth 1.0 specifies a data transmission rate of 1 Mbps and a transmission distance range of 10m to 100m. Because Bluetooth 1.0 utilizes a high radio frequency of 2.4 GHz, it can communicate even in the presence of obstacles.

[0081] When a user terminal, including a FOB key or a digital key, approaches the exterior of vehicle 1, the communication device 300 according to the implementation scheme can measure the position of the user terminal under the control of the processor 200, unlock the door based on the positioning result, and control the remote start of vehicle 1 to be performed.

[0082] The communication device 300 may include multiple positioning modules 310 to 340. Positioning modules 310 to 340 may be short-range wireless communication modules, and each wireless communication module can measure the strength of a wireless signal received from a user terminal. One of the multiple wireless communication modules installed on vehicle 1 may be designated as the master module. The master module can collect the strength of the wireless signal measured by another wireless communication module and send that strength to a processor.

[0083] For example, positioning modules 310 to 340 can be composed of Bluetooth modules, Bluetooth Low Energy modules, Wi-Fi modules, etc. Positioning modules 310 to 340 may include an FRT antenna, an RR antenna, an LH antenna, and an RH antenna. The FRT antenna is located at the front of the vehicle and mounted on the AVNT at the front of vehicle 1; the RR antenna is located at the rear of the vehicle and mounted on the shark fin antenna; the LH antenna is mounted on the left rearview mirror; and the RH antenna is mounted on the right rearview mirror. The wireless signal strength of user terminal 20 can be independently measured and transmitted to the main module.

[0084] In addition, the communication device may include multiple low-frequency (LF) antennas 350 to 370. Each of the LF antennas 350 to 370 is positioned within a frequently accessed area of ​​the vehicle interior (e.g., driver's seat, passenger door, and trunk) and transmits a low-frequency signal to detect the FOB key. The LF signal can communicate with the FOB key within a range of approximately 1 to 2 meters to detect the FOB key located within this range. The LF antennas may utilize a low-frequency band of 125 kHz or 134.2 kHz to detect the FOB key.

[0085] The FOB key that receives a low-frequency signal from the LF antenna at 350 to 370 can send an RF signal to the processor in response to the low-frequency signal.

[0086] Processor 200 can perform overall control of vehicle 1. Processor 200 can be configured to execute applications and instructions stored in memory 400.

[0087] The processor 200 may be the main CPU for the overall control of the vehicle 1. In one embodiment, the processor 200 may perform pairing operations by running a Bluetooth application to facilitate communication between the Bluetooth application and the communication device.

[0088] The processor 200 can determine the relative position of the user terminal 20 with respect to the vehicle 1. In an embodiment, the relative position may include the distance between the vehicle 1 and the user terminal 20, as well as the orientation of the user terminal 20 relative to the vehicle 1.

[0089] For example, the processor 200 can use at least one of Wi-Fi, Bluetooth, and Bluetooth Low Energy methods to determine the relative position.

[0090] The processor 200 can compare the positioning results and positioning modes, and determine the relative position of the user terminal 20.

[0091] For example, processor 200 can use the Received Signal Strength Indicator (RSSI) method (which measures the strength of the Wi-Fi signal to estimate the distance) to determine the relative position between the vehicle and the user terminal.

[0092] Alternatively, the processor 200 can use the RSSI method, which measures the strength of the Bluetooth signal to estimate the distance, to determine the relative position between the vehicle and the user terminal.

[0093] The memory 400 can store applications and various data used to control the vehicle 1, and can load applications or read or write data according to the request of the processor 200.

[0094] The memory 400 may store at least one algorithm that performs calculations or implementations of various instructions for operating the processor 200 according to the embodiment. The memory 400 may include at least one storage medium such as flash memory, hard disk, memory card, read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM (EEPROM), programmable ROM (PROM), magnetic storage, magnetic disk, and optical disk.

[0095] In the following implementation, an example of using Bluetooth signals to perform location and control keyless entry and keyless start (PEPS) operations will be described.

[0096] PEPS (Personal Electronic Control Panel) functionality can be a feature that automatically performs operations such as door locking / unlocking and vehicle starting after estimating the location of a smartphone via a communication module installed in the vehicle. For example, processor 200 can estimate the relative position of user terminal 20 with respect to the vehicle using the signal strength of a Bluetooth signal received from user terminal 20 connected to a Bluetooth module. When the estimated location of user terminal 20 is close to the vehicle, processor 200 can provide keyless entry functionality, and when the estimated location of user terminal 20 is inside the vehicle, processor 200 can provide keyless start functionality.

[0097] Figure 3 This is a block diagram illustrating the configuration of a user terminal according to the implementation scheme.

[0098] refer to Figure 3 The user terminal 20 may include a communication unit 21, an output unit 22, a storage unit 23, and a control unit 24.

[0099] User terminal 20 may include a user-portable smartphone, smart tablet, laptop, etc. User terminal 20 may store a digital key that generates authentication information for controlling functions such as locking and unlocking vehicle doors, remote start, emergency alarms, and trunk opening.

[0100] The communication unit 21 may include a transceiver for transmitting and receiving information using an antenna, communication circuitry, a communication processor, etc., and the communication unit 21 can perform short-range communication with the vehicle. According to the embodiment, the communication unit 21 can perform NFC communication or UWB communication.

[0101] The output unit 22 can output information stored in the user terminal 20 in a visual, auditory, or a combination thereof manner. According to embodiments, the output unit 22 can be implemented as a display device employing a liquid crystal display (LCD) panel, a light-emitting diode (LED) panel, an organic light-emitting diode (OLED) panel, a plasma display panel (PDP), or the like. The LCD may include a thin-film transistor LCD (TFT-LCD). The output unit 22 can be integrally formed with a touch screen panel (TSP) and an input unit (not shown).

[0102] According to one embodiment of the present invention, the storage unit 23 may store at least one algorithm that performs calculations or implementations of various instructions for operating the user terminal 20. The storage unit 23 may include at least one storage medium such as flash memory, hard disk, memory card, ROM, RAM, EEPROM, PROM, magnetic storage, magnetic disk, and optical disk. The storage unit 23 may store driver information for multiple vehicles.

[0103] According to the implementation scheme, the control unit 24 can be implemented by various processing devices (such as a microprocessor, which has a semiconductor chip capable of executing various instructions embedded therein) and can control the operation of the user terminal 20. The control unit 24 can be electrically connected to the communication unit 21, the output unit 22, and the storage unit 23 via wired cables or various circuits to send electrical signals including control commands, and can send and receive electrical signals including control commands via various wireless communication networks such as CAN.

[0104] Figure 4 This is a block diagram illustrating the configuration of the FOB key according to the implementation scheme. (Reference) Figure 4 The FOB key 30 may include a housing 31 made of plastic material, and a printed circuit board (PCB) 32 may be disposed within the housing. Various buttons for controlling the doors may be disposed outside the housing 31. For example, the door open button 37a, door lock button 37b, trunk open button 37c, and hold button 37d may be disposed outside the housing 31. Each button may be electrically connected to the PCB 32 within the housing.

[0105] Furthermore, the light source 33 for outputting visual signals can be disposed outside the housing 31. The light source 33 can be electrically connected to the PCB 32 inside the housing 31. The housing area surrounding the light source 33 can be made of a transparent material, so that the light signals output from the light source 33 can be identified from the outside.

[0106] PCB 32 may include a signal processing module 34 for converting a signal input from a button into an electrical signal and a communication module 35 for transmitting the converted electrical signal to the vehicle. The communication module 35 may include at least one of an LF module and a Bluetooth module.

[0107] In addition, the speaker 36 for outputting auditory signals can be built into the housing 31 and electrically connected to the PCB 32.

[0108] The light source 33 and the speaker 36 can operate under the control of the signal processing module 34.

[0109] Figure 5This is a block diagram illustrating the configuration of a vehicle key search system according to an implementation scheme. (Reference) Figure 5 The vehicle key search system 10 may include a vehicle 1 and a vehicle key, wherein the vehicle 1 includes a processor 200 and a communication device 300. The vehicle key may include at least one of a digital key 20 and a smart key 30.

[0110] In the implementation scheme, the term "vehicle key" can be used as a combination of "smart key" and "digital key." The fob key 30 can operate as a smart key, and the user terminal 20 can operate as a digital key. In the following text, fob key 30 can be used as a term referring to the same configuration as a smart key, and digital key can be used as a term referring to the same configuration as user terminal 20.

[0111] The vehicle key can open and close the doors of vehicle 1, start or stop vehicle 1, and perform various functions included in vehicle 1 as needed. The vehicle key can be one or more devices capable of utilizing Bluetooth Low Energy (BLE) communication and NFC communication.

[0112] The vehicle key can be operated after being connected to a specific vehicle 1, and multiple vehicle keys can be connected to one vehicle 1, or one vehicle key can be connected to multiple vehicles 1, as needed. Furthermore, it is possible to connect multiple vehicle keys to multiple vehicles 1.

[0113] Furthermore, the digital key can be operated by being installed in a device such as a smartphone, and there can be multiple digital keys installed in a single smartphone. In this embodiment, the digital key is described as operating when installed in a smartphone, but it is not limited to this; the digital key can be installed in a device other than a smartphone as needed.

[0114] The vehicle key can control vehicle 1 and communicate with vehicle 1 for this purpose via LF communication, RF communication, BLE communication, UWB communication, wireless internet network communication or mobile communication network communication.

[0115] The vehicle key can be manipulated to enable the user to perform various functions for controlling vehicle 1, and can be manipulated to set one or more wireless anchor points.

[0116] The vehicle key can search for nearby wireless anchors and register the found anchors. That is, the vehicle key can utilize various communication methods to search for wireless anchors with which it can connect wirelessly. For example, when two wireless anchors are near the vehicle key, one anchor can communicate with the vehicle key via BLE communication and the other anchor can communicate with the vehicle key via a wireless internet communication network. The vehicle key can then communicatively connect to one of the two anchors or communicatively connect to both anchors.

[0117] In the implementation scheme, the wireless anchor point can be the same component as the positioning module.

[0118] The processor 200 can respond to user input and output a vehicle key search command. (See also...) Figure 6 Vehicle key search commands can be entered via AVNT 100. For example, a vehicle key search command could be a smart key 30 search command or a user terminal 20 search command. The vehicle key can be a key whose ID information has been registered in the vehicle through an authentication process. In this case, user terminal 20 may include a digital key, but is not necessarily limited to this; conceptually, user terminal 20 may include all user terminals 20 registered in the vehicle. In this implementation, for ease of description, an example of a user terminal 20 implementing digital key functionality will be described.

[0119] The communication device 300 can output a key search signal in response to a vehicle key search command.

[0120] For example, the communication device 300 can use an LF antenna to output a key search signal. The LF antenna can detect the vehicle key by transmitting an LF signal. The LF signal can communicate with vehicle keys within a range of approximately 1 to 2 meters to detect vehicle keys located within this range. The LF antenna can use a low-frequency band of 125 kHz or 134.2 kHz to detect the vehicle key.

[0121] The key search signal may have a different data frame than the signal used when performing the PEPS function. (See also...) Figure 7 and Figure 8 The data structure of the LF signal output from the LF antenna can include a preamble, synchronization, wake-up ID, header, data, and checksum information.

[0122] A preamble is used to indicate the start of a data frame and can typically be sent to the receiver as a signal indicating the start of data transmission by repeating a regular pattern (e.g., 1010 or 0101).

[0123] Synchronization mode can be used to synchronize the receiver and transmitter. Synchronization mode can help synchronize data transmission rates and timing.

[0124] The wake-up ID can include the unique identification number of the smart key 30, and the vehicle can verify whether the smart key 30 is the correct key through such a code.

[0125] The data field contains the actual data and may include instructions, status information, etc. The instruction field may include instructions to be executed by the smart key 30. For example, instructions may include locking / unlocking the doors, starting the engine, etc.

[0126] The status field can include the current status information of the smart key 30 or the vehicle. Status information can include battery status, button press status, etc.

[0127] In addition, the data field may include a vehicle key search signal. The vehicle key search signal may include instructions for controlling the output of the LF signal of the LF antenna within a predetermined time period.

[0128] Checksums can be used to detect errors that may occur during data transmission. They can help verify the integrity of the transmitted data.

[0129] The processor 200 can use the data field of the LF antenna signal to output PEPS commands or vehicle key search signals. That is, when performing a PEPS operation, command information can be written into the data field, and when performing a vehicle key search operation, the vehicle key search signal can be written into the data field.

[0130] The communication device 300, under the control of the processor 200, can sequentially output key search signals using multiple LF antennas. (See also...) Figure 9 The multiple LF antennas may include a first antenna 350 for detecting the driver's seat area of ​​the vehicle, a third antenna 370 for detecting the rear seat and trunk area of ​​the vehicle, and a second antenna 360 for detecting the area between the driver's seat and the rear seat. The processor 200 can control the first antenna 350, the second antenna 360, and the third antenna 370 to sequentially output key search signals.

[0131] The processor 200 can control the first antenna 350, the second antenna 360, and the third antenna 370 to sequentially output key search signals according to a preset search period. Furthermore, when a response signal is received, the processor 200 can control the communication device 300 to stop outputting key search signals. For example, when a response signal is received from the vehicle key, the processor 200 can control the first antenna 350, the second antenna 360, and the third antenna 370 to sequentially output key search signals at 1-second intervals, and control the antennas in the next command not to output key search signals.

[0132] The vehicle key can respond to the LF signal of the LF antenna by sending a response signal as an RF signal to the communication device 300.

[0133] The processor 200 can display the area where a vehicle search signal corresponding to a response signal is output via the vehicle's internal / external output device 500. When the communication device 300 receives a response signal, the processor 200 can specify the antenna that output the key search signal immediately before the time the response signal was received. The processor 200 can display the LF signal output area of ​​a specific antenna via the vehicle's internal / external output device 500, and simultaneously output visual or audible signals to indicate that the area is where the key search is completed.

[0134] In one embodiment, the vehicle interior / exterior output device 500 may include visual and / or auditory output devices installed inside and / or outside the vehicle. In another embodiment, the vehicle interior / exterior output device 500 may include speakers, displays, lights, etc., and may be used as a concept including AVNT 100.

[0135] Alternatively, the communication device 300 can utilize a Bluetooth communication module to output a key search signal. When the Bluetooth communication module is installed on the vehicle key to enable Bluetooth communication, or when LF communication is not possible, the communication device 300 can utilize the Bluetooth communication module to search for the smart key 30 or the user terminal 20.

[0136] Also refer to Figure 10 and Figure 11 The processor 200 can run a Bluetooth application to perform communication between the Bluetooth application and the communication device 300, thereby performing a pairing operation.

[0137] The vehicle's Bluetooth communication module can periodically broadcast a key search signal under the control of the processor 200. In this case, the key search signal may include the vehicle's unique identifier and service information.

[0138] User terminal 20 can be set to Bluetooth signal scanning mode to detect the vehicle's key search signal. When user terminal 20 receives the vehicle's key search signal, the application of user terminal 20 can analyze the key search signal. User terminal 20 can return a response signal to the vehicle, including the user terminal 20's unique identifier and authentication information.

[0139] The processor 200 can use the response signal to measure the position of the vehicle key. The processor 200 can determine the relative position of the user terminal 20 relative to the vehicle. In an embodiment, the relative position may include the distance between the vehicle and the user terminal 20 and the orientation of the user terminal 20 relative to the vehicle, and the relative position between the vehicle and the user terminal 20 may be determined by an RSSI method, which estimates the distance by measuring the strength of the Bluetooth signal as described above.

[0140] The processor 200 can display the measured position of the vehicle key via the vehicle interior / external output device 500. In this case, the position of the vehicle key can be displayed so that the area, including the error range based on the positioning results, can be visually distinguished from other areas.

[0141] If the processor 200 does not receive a response signal within a preset time after outputting the key search signal, the processor 200 can output a message through the vehicle's internal / external output device 500. In this case, the message may include letters, symbols, numbers, etc., indicating that the vehicle key search has failed.

[0142] For example, the processor 200 can control multiple LF antennas to output key search signals at 1-second intervals, and output a key search failure message if no response signal is received after 3 seconds following the output of the key search signal from the first LF antenna.

[0143] For example, the processor 200 can output a key search signal via a Bluetooth module, and output a key search failure message if no response signal is received after 3 seconds.

[0144] When a vehicle key search signal is received, the vehicle key can send a response signal corresponding to the vehicle key search signal to the communication device 300, and output at least one visual signal and an auditory signal externally.

[0145] When the key search signal is received using the LF antenna, the vehicle key can send an RF signal as a response signal to the communication device 300.

[0146] Alternatively, when a key search signal is received using the Bluetooth module, the vehicle key can send a Bluetooth signal as a response signal to the communication device 300.

[0147] When the vehicle key is a digital key, the digital key that receives the key search signal can output visual and auditory signals externally through a light source and a speaker.

[0148] When the vehicle key is user terminal 20, user terminal 20, upon receiving the key search signal, can output visual and auditory signals externally through its output unit. Furthermore, user terminal 20 can also output vibration signals in combination.

[0149] Figure 12 This is a schematic diagram illustrating a vehicle key search system according to another embodiment. (Reference) Figure 12 The vehicle key search system according to the implementation plan may include a first vehicle key 20 and a second vehicle key 30.

[0150] In the implementation scheme, the first vehicle key 20 can be a smart key or a digital key, and the second vehicle key 30 can be a key of a different type from the first vehicle key 20, either a smart key or a digital key. That is, when the first vehicle key 20 is a smart key, the second vehicle key 30 can be a digital key, and when the first vehicle key 20 is a digital key, the second vehicle key 30 can be a smart key.

[0151] The first vehicle key 20 can output a vehicle key search signal in response to user input. When the first vehicle key 20 is a digital key, the vehicle key search command can be entered through an application installed on the user terminal. When the first vehicle key 20 is a smart key, the vehicle key search command can be entered using an input button located on the outside of the housing (e.g., continuous door lock button input). Upon receiving a user's vehicle key search command, the first vehicle key 20 can convert the command into an electrical signal and output the electrical signal through the communication module.

[0152] When a vehicle key search signal is received, the second vehicle key 30 can send a response signal corresponding to the vehicle key search signal back to the first vehicle key 20, and output at least one visual signal and an auditory signal externally.

[0153] In the implementation scheme, the key search signal and response signal can be Bluetooth signals.

[0154] When the second vehicle key 30 is a digital key, the digital key that receives the key search signal can output visual and auditory signals externally through a light source and a speaker.

[0155] When the second vehicle key 30 is a user terminal, the user terminal that receives the key search signal can output visual and auditory signals externally through the output unit. In addition, the user terminal can also output vibration signals.

[0156] For convenience, one or more figures are described by way of example, with steps performed by processor circuitry. One, some, or all of the steps, or parts thereof, of the example method in the figures may be performed by one or more other circuits. One or some steps of the example method in the figures may be omitted, performed in a different order, and / or changed in another way, and / or one or more additional steps may be added.

[0157] Figure 13 This is a flowchart of the vehicle key search method according to the implementation plan.

[0158] refer to Figure 13 The processor can output a vehicle key search command in response to user input. The vehicle key search command can be input via the AVNT. For example, the vehicle key search command can be a smart key search command or a user terminal search command (S1301).

[0159] Next, the communication device can output a key search signal in response to a vehicle key search command. Under the control of the processor, the communication device can sequentially output the key search signal using multiple LF antennas (S1302).

[0160] Next, the vehicle key can respond to the LF signal of the LF antenna by sending a response signal as an RF signal to the communication device (S1303).

[0161] Next, the vehicle key can output at least one visual signal and an auditory signal externally (S1304).

[0162] Next, when a response signal is received, the processor can control the communication device to stop outputting the key search signal (S1305).

[0163] Next, the processor can display the area on the AVNT that outputs the vehicle key search signal corresponding to the response signal (S1306).

[0164] Figure 14 This is a flowchart of a vehicle key search method according to another implementation scheme.

[0165] refer to Figure 14 The processor can output a vehicle key search command in response to user input. The vehicle key search command can be input via the AVNT. For example, the vehicle key search command can be a smart key search command or a user terminal search command (S1401).

[0166] Next, the communication device can output a key search signal in response to a vehicle key search command. Under the control of the processor, the communication device can sequentially output the key search signal using a Bluetooth communication module (S1402).

[0167] Next, the vehicle key can send a Bluetooth response signal to the communication device in response to the key search signal (S1403).

[0168] Next, the vehicle key can output at least one visual signal and an auditory signal externally (S1404).

[0169] Next, the processor can use the response signal to measure the position of the vehicle key (S1405).

[0170] Next, the processor can display the measured location of the vehicle key via AVNT (S1406).

[0171] Figure 15 This is a flowchart of a vehicle key search method based on yet another implementation plan.

[0172] refer to Figure 15 The first vehicle key can output a vehicle key search command in response to user input. When the first vehicle key is a digital key, the vehicle key search command can be input via an application installed on the user terminal. Alternatively, when the first vehicle key is a smart key, the vehicle key search command can be input using an input button located on the outside of the housing. Upon receiving a user's vehicle key search command, the first vehicle key can convert the command into an electrical signal and output the electrical signal through the communication module (S1501).

[0173] In the implementation scheme, the key search signal can be a Bluetooth signal.

[0174] Next, the second vehicle key can send a response signal corresponding to the vehicle key search signal back to the first vehicle key (S1502).

[0175] In the implementation scheme, the response signal may be a Bluetooth signal.

[0176] Next, the second vehicle key can output at least one visual signal and an auditory signal externally. At this time, when the second vehicle key is a digital key, the digital key that receives the key search signal can output visual and auditory signals externally through a light source and a speaker. Alternatively, when the second vehicle key is a user terminal, the user terminal that receives the key search signal can output visual and auditory signals externally through an output unit. Furthermore, the user terminal can jointly output a vibration signal (S1503).

[0177] As used in this embodiment, the term "~cell" refers to a software or hardware component such as a Field-Programmable Gate Array (FPGA) or ASIC, and the "~cell" serves a specific function. However, a "cell" is not limited to software or hardware. A "cell" can be configured to be located in an addressable storage medium and configured to be reproduced by one or more processors. Thus, by way of example, a "cell" is a component (such as a software component, an object-oriented software component, a class component, and a task component), a process, a function, an attribute, a program, a subroutine, a program code segment, a driver, firmware, microcode, a circuit, data, a database, a data structure, a graph, an array, and a variable. The functionality provided in a component and a "~cell" can be combined into fewer components and "cells" or additional components and "cells" can be separated. Furthermore, components and "~cells" can be implemented to reproduce one or more CPUs in a device or a secure multimedia card.

[0178] The vehicle key search system and method according to the implementation plan can use a vehicle to search for smart keys or digital keys and locate their positions.

[0179] In addition, user terminals can be used to search for smart keys and locate their positions.

[0180] In addition, smart keys can be used to search for user terminals or digital keys and locate their positions.

[0181] Although the invention has been described above with reference to exemplary embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as described in the appended claims.

Claims

1. A vehicle key search system, comprising: A vehicle, comprising a processor and a communication device, the processor being configured to output a vehicle key search command in response to user input, and the communication device being configured to output a vehicle key search signal in response to the vehicle key search command. and The vehicle key, upon receiving a vehicle key search signal, sends a response signal corresponding to the vehicle key search signal back to the communication device, and outputs at least one visual signal and an auditory signal externally.

2. The vehicle key search system according to claim 1, wherein, The communication device uses a low-frequency antenna to output a key search signal.

3. The vehicle key search system according to claim 2, wherein, The communication device, under the control of the processor, uses multiple low-frequency antennas to sequentially output key search signals.

4. The vehicle key search system according to claim 3, wherein, When a response signal is received, the communication device stops outputting the key search signal.

5. The vehicle key search system according to claim 3, wherein, The processor displays the area where the vehicle key search signal corresponding to the response signal is output via an internal / external output device.

6. The vehicle key search system according to claim 2, wherein, The key search signal has a different data frame than the signal used when performing keyless entry and keyless start functions.

7. The vehicle key search system according to claim 1, wherein, The communication device uses a Bluetooth communication module to output a key search signal.

8. The vehicle key search system according to claim 7, wherein, The processor uses a response signal to measure the position of the vehicle key.

9. The vehicle key search system according to claim 8, wherein, The processor displays the measured location of the vehicle key via an in-vehicle / out-of-vehicle output device.

10. The vehicle key search system according to claim 1, wherein, If no response signal is received within a preset time after the key search signal is output, the processor outputs a message through the vehicle's internal / external output device.

11. A vehicle key search system, comprising: The first vehicle key, which responds to user input by outputting a vehicle key search signal; and The second vehicle key, upon receiving a vehicle key search signal, sends a response signal corresponding to the vehicle key search signal back to the first vehicle key, and outputs at least one visual signal and an auditory signal externally.

12. The vehicle key search system according to claim 11, wherein, The first vehicle key is a smart key or a digital key, and the second vehicle key is a key of a different type from the first vehicle key, either a smart key or a digital key.

13. A method for searching a vehicle key, comprising: The vehicle responds to user input and outputs a vehicle key search command; The vehicle outputs a vehicle key search signal in response to a vehicle key search command; The vehicle key receives the vehicle key search signal; The vehicle key sends a response signal corresponding to the vehicle key search signal; At least one of the visual and auditory signals output externally by the vehicle key.

14. The vehicle key search method according to claim 13, wherein, The output key search signal includes: using multiple low-frequency antennas to sequentially output the key search signal.

15. The vehicle key search method according to claim 14, further comprising: The output of the key search signal will stop when a response signal is received.

16. The vehicle key search method according to claim 14, further comprising: When a response signal is received, the area where the vehicle key search signal corresponding to the response signal is displayed via the vehicle's internal / external output device.

17. The vehicle key search method according to claim 13, wherein, The output key search signal includes: using a Bluetooth communication module to output a key search signal.

18. The vehicle key search method according to claim 17, further comprising: When a response signal is received, the position of the vehicle key is measured using the response signal.

19. The vehicle key search method according to claim 18, further comprising: The measured location of the vehicle key is displayed via an internal / external output device.

20. The vehicle key search method according to claim 13, further comprising: If no response signal is received within a preset time after the key search signal is output, the vehicle outputs a message through the vehicle's internal / external output device.

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