Mobile terminal protective case

Abstract

The present application provides a mobile terminal protective shell, which may include: a radio frequency processing module, and a signal transceiver module connected to the radio frequency processing module; the signal transceiver module is used to receive a first radio frequency signal sent by a target vehicle when the signal transceiver module is in an activated state; the radio frequency processing module is used to identify and process the first radio frequency signal according to a first radio frequency protocol to determine a second radio frequency signal corresponding to the first radio frequency signal; the signal transceiver module is also used to send the second radio frequency signal to the target vehicle, and the second radio frequency signal is used to open or control the target vehicle. In an embodiment of the present invention, the mobile terminal protective shell integrates a car key function and can be matched with vehicles of various models; and as a commonly used mobile terminal protection accessory, it not only avoids the carrying and loss of conventional car keys, but also enriches the overall function of the protective shell.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to a mobile terminal protective case. Background Art

[0002] With the growth and popularity of car sales, driving has become the mode of transportation chosen by more and more people. Each car is equipped with a corresponding car key to open the door and start the vehicle. Before using the vehicle each time, the driver needs to bring the corresponding car key to open the door and start the vehicle. At the same time, with the gradual improvement of the functions of mobile phones and related accessories, the solution of controlling the car through mobile phones or accessories has gradually appeared in people's lives.

[0003] However, in daily work and life, separate car keys are easy to lose and inconvenient to carry. Although smartphones are essential communication tools in daily life, due to the limitations of mobile phone hardware circuits, smartphones cannot integrate the low-frequency and radio frequency communication modules required for car smart keys; and the same hardware module can only match cars of the same or similar types, and cannot meet the matching needs of multiple models.

[0004] Therefore, how to meet the demand for portable vehicle keys that match multiple vehicle models is a problem that needs to be solved in this application. Summary of the invention

[0005] The present invention provides a mobile terminal protective shell, which integrates a car key function and is convenient for matching with various vehicle models to open and control one or more vehicle models. As a protective accessory for commonly used terminals, it not only avoids the carrying and loss of specific car keys, but also enriches the overall function of the shell.

[0006] In a first aspect, an embodiment of the present invention provides a mobile terminal protective case, comprising: a radio frequency identification module and a signal transceiver module connected to the radio frequency identification module; the signal transceiver module is used to receive a first radio frequency signal sent by a target vehicle; the radio frequency identification module is used to identify the first radio frequency signal according to a first radio frequency protocol; the signal transceiver module is also used to send a second radio frequency signal corresponding to the first radio frequency signal to the target vehicle according to the first radio frequency signal, and the second radio frequency signal is used to start or control the target vehicle.

[0007] In a possible implementation, the mobile terminal protective case also includes a radio frequency adjustment module; the radio frequency adjustment module is used to determine the recognition range of the frequency of the first radio frequency signal and the frequency of the second radio frequency signal according to the model of the target vehicle. For example, after selecting a certain car model on the mobile phone application, the mobile phone application communicates with the radio frequency adjustment module of the mobile phone case by wireless or wired means; the radio frequency adjustment module determines the frequency range of the first radio frequency signal that can be identified (for example, including one or more frequency bands) based on the received data about a certain car model. For example, the car model is Toyota New Crown, and the owner sets the car model that matches the mobile phone case (i.e., the car key) to Toyota New Crown through the mobile phone application; when the owner carries the mobile phone equipped with the mobile phone case into the signal range of the vehicle, the door of the vehicle is opened through the interaction between the vehicle and some functional modules of the mobile phone case.

[0008] In a possible implementation, a mobile terminal compatible with the mobile terminal protective shell cooperates with the mobile terminal protective shell; the mobile terminal protective shell further includes a communication module;

[0009] The communication module is used to interact with the mobile terminal for first data, where the first data is used to configure a first radio frequency protocol during the communication between the target vehicle and the mobile terminal protective shell.

[0010] In a possible implementation, the mobile terminal protective shell further includes a battery, a charging module connected to the battery, and a charging port of the mobile terminal protective shell connected to the charging module; the charging module is also connected to the signal transceiver module; the battery is used to supply power to the signal transceiver module; the charging port of the mobile terminal protective shell is used to charge the battery when the mobile terminal protective shell is connected to an external power source; when the mobile terminal protective shell is not connected to an external power source, the mobile terminal charges the battery of the mobile terminal protective shell through the charging port of the mobile terminal protective shell. For example, a mobile phone (i.e., a mobile terminal) is connected to the USB port of the mobile phone shell (i.e., the charging port of the mobile terminal protective shell) through a charging cable, so as to be connected to the mobile terminal protective shell. Specifically, the charging interface of the mobile phone shell is connected to the OTG charging switching module, and the OTG charging module is connected to the battery. For example, when the charging interface of the mobile phone shell is connected to an external power source, the OTG charging switching module processes the mains (220V as an example) to charge the built-in power supply of the mobile phone shell. For example, when the charging port of the mobile phone case is not connected to an external power source but the mobile phone case is connected to the mobile phone, the mobile phone can be connected to the OTG charging switching module through the USB interface, and the OTG charging switching module is connected to the battery in the mobile phone case; the OTG charging switching module switches the charging mode so that the electric energy stored in the mobile phone battery charges the built-in battery of the mobile phone case. Optionally, when the mobile terminal protective case is not connected to an external power source and the mobile terminal has sufficient power, the mobile terminal and the mobile terminal protective case are connected through a wireless charging module so that the mobile terminal can charge the battery in the protective case.

[0011] In a possible implementation manner, an operating frequency of the first radio frequency signal includes one or more of 125 Khz, 13.56 Mhz and 22 Khz.

[0012] In a possible implementation, the mobile terminal protective shell also includes a radio frequency data copying module; the radio frequency data copying module is used to copy the radio frequency data of the first remote control to generate coding information that replaces the first remote control; the communication module is also used to send the coding information of the first remote control to the mobile terminal.

[0013] In a possible implementation, the radio frequency data copying module is also used to copy data of an electronic tag or a contactless card.

[0014] In a possible implementation, the mobile terminal protection shell is applied to a mobile phone, a tablet computer, an e-book reader, etc. In the scenario where the mobile terminal protection shell is applied to a mobile phone, the mobile terminal protection shell is a mobile phone shell.

[0015] In a second aspect, an embodiment of the present invention provides a mobile phone case with a vehicle key function, which may include a radio frequency identification module and a signal transceiver module connected to the radio frequency identification module; the signal transceiver module is used to receive a first radio frequency signal sent by a target vehicle; the radio frequency identification module is used to identify the first radio frequency signal according to a first radio frequency protocol; the signal transceiver module is also used to send a second radio frequency signal corresponding to the first radio frequency signal to the target vehicle based on the first radio frequency signal, and the second radio frequency signal is used to open or control the target vehicle.

[0016] In the embodiment of the present invention, the radio frequency signal of the car is received through the signal transceiver module built into the mobile phone case; then the received radio frequency signal is identified through the radio frequency identification module; the preset radio frequency identification protocol is matched according to the radio frequency signal and the radio frequency signal fed back to the car is determined to open the door or start the vehicle. For example, when the driver carries a mobile phone case and a mobile phone with an integrated car key function and enters a certain range of the target vehicle, the mobile phone case receives the radio frequency signal sent by the car, and feeds back the signal to the car through the corresponding circuit module to control the vehicle. By implementing the embodiment of the present invention, it is avoided to carry a specific car key and the functionality of the mobile phone case is enriched.

[0017] In a possible implementation, the mobile phone case further includes a radio frequency adjustment module; the radio frequency adjustment module is used to adjust the frequency band of the second radio frequency signal according to the first radio frequency signal.

[0018] In a possible implementation, the mobile phone case also includes a communication module; the communication module is used to interact with the mobile phone to perform first data, and the first data is used to configure a first radio frequency protocol during the communication between the target vehicle and the mobile phone case.

[0019] In a possible implementation, the mobile phone case further includes one or more buttons and a status indicator light; the one or more buttons are connected to the signal transceiver module; the status indicator light is connected to the signal transceiver module; the button is used to turn on or off the signal transceiver module; the status indicator light is used to indicate the working state of the signal transceiver module. Optionally, the mobile phone case has a built-in PCB connected to the button and the status indicator light; the button can be used to turn on the key function of the mobile phone case or correspond to a specific control function; the status indicator light can display the battery power status on the PCB, for example, a red light corresponds to low power, a green light corresponds to full power, and a yellow light corresponds to sufficient power.

[0020] In a possible implementation, the mobile phone case also includes a key storage compartment; the key storage compartment is used to store a spare key of the target vehicle.

[0021] In a possible implementation, the mobile phone case further includes a battery, a charging module connected to the battery, and a mobile phone case charging port connected to the charging module; the charging module is also connected to the signal transceiver module; the battery is used to supply power to the signal transceiver module. Optionally, the battery is a small-capacity lithium battery.

[0022] In a possible implementation manner, the first radio frequency signal is a low-frequency signal or a high-frequency signal.

[0023] In a possible implementation, the signal transceiver module is further used to send a fourth radio frequency signal to the access control system according to the third radio frequency signal, and the fourth radio frequency signal is used to open the access control system.

[0024] In a possible implementation, the mobile phone case further includes a radio frequency data copying module; the radio frequency data copying module is used to copy the radio frequency data of the first remote controller to generate coding information that replaces the first remote controller; the communication module is also used to send the coding information of the first remote controller to the mobile phone. Optionally, the first remote controller is a universal radio frequency remote controller.

[0025] In a possible implementation, the radio frequency data copying module is also used to copy the electronic tag or contactless card.

[0026] In a third aspect, an embodiment of the present invention provides a mobile terminal protective shell, comprising: a shell, a printed circuit board PCB and a cover plate; wherein:

[0027] The inner surface of the shell is provided with a groove, the PCB is arranged in the groove, the cover plate covers the groove and fits with the inner side of the shell; the PCB is provided with a battery mounting portion and an inductor mounting portion, and is provided with a signal transceiver module, a radio frequency identification module, a communication module and a radio frequency data copying module;

[0028] The signal transceiver module is used to receive a first radio frequency signal sent by a target vehicle;

[0029] The radio frequency identification module is used to identify the first radio frequency signal according to a first radio frequency protocol;

[0030] The signal transceiver module is further used to send a second radio frequency signal corresponding to the first radio frequency signal to the target vehicle according to the first radio frequency signal, and the second radio frequency signal is used to start or control the target vehicle;

[0031] The radio frequency data duplication module is used to duplicate the radio frequency data of the first remote controller to generate coding information that replaces the first remote controller;

[0032] The communication module is further used to send the coding information of the first remote controller to the mobile terminal.

[0033] In a possible implementation, the shell is provided with a mobile phone case charging port; the outer surface of the shell is provided with an indicator light and one or more buttons; the shell has a built-in key storage compartment for storing a spare key of the target vehicle.

[0034] In a possible implementation, an indicator light and one or more buttons are provided on the outer surface of the shell; wherein the outer surface has no contact with the mobile terminal; the outer surface is opposite to the inner surface; the button is used to turn on or off the signal transceiver module; and the indicator light is used to indicate the working status of the signal transceiver module.

[0035] In a fourth aspect, an embodiment of the present invention provides a mobile terminal housing, wherein the mobile terminal housing is a component of a mobile terminal, and optionally, the mobile terminal is a mobile phone, a tablet computer, an e-book reader, and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0037] Figure 1 This is a schematic diagram of an application scenario of a mobile phone case with a car key function provided by an embodiment of the present invention;

[0038] Figure 2 This is a functional architecture diagram of a mobile phone case with a car key function provided by an embodiment of the present invention;

[0039] Figure 3 is a schematic diagram of an internal module of a mobile phone case provided by an embodiment of the present invention;

[0040] Figure 4 It is an exploded schematic diagram corresponding to a physical structure of a mobile phone case matched with a mobile phone provided by an embodiment of the present invention;

[0041] Figure 5 This is a partial structural schematic diagram of a mobile phone case provided by an embodiment of the present invention;

[0042] Figure 6 This embodiment of the present invention provides a Figure 5 A schematic diagram of a mobile phone structure in which the mobile phone shells shown cooperate with each other;

[0043] Figure 7 This is a schematic diagram of the structure of an inner cover plate of a mobile phone case provided by an embodiment of the present invention;

[0044] Figure 8This is a schematic diagram of the PCB structure of a mobile phone case provided by an embodiment of the present invention;

[0045] Fig. 9 This embodiment of the present invention provides a Figure 8 A schematic diagram of the first component structure of the PCB shown;

[0046] Fig.10 This embodiment of the present invention provides a Figure 8 A schematic diagram of the second component structure of the PCB is shown. DETAILED DESCRIPTION

[0047] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0048] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] The mobile terminal protective shell involved in the present application is further described in detail below in conjunction with the accompanying drawings. In the embodiment of the present invention, the mobile terminal is a smart phone and the mobile terminal protective shell is a mobile phone.

[0051] See also Figure 1 , Figure 1 is a schematic diagram of an application scenario of a mobile phone case with a car key function provided by an embodiment of the present invention; Figure 1 As shown, it includes scene A and scene B; in scene A and scene B, each scene includes a vehicle 1 and a mobile phone 2 with a mobile phone case. Figure 1 In the illustrated scenario, the signal receiving and transmitting range 3 of the vehicle 1 is a circular area with the vehicle 1 as the center and r as the signal radius. The embodiment of the present invention does not limit the signal receiving and transmitting range of the vehicle. Optionally, a signal receiving and transmitting range of a certain area can be set at the trunk of the vehicle 1, the driver's seat door, and the co-pilot's door.

[0052] In scenario A, when the mobile phone with the mobile phone case according to the embodiment of the present invention is outside the signal receiving and transmitting range of the vehicle 1, the vehicle 1 is in a locked state. The locked state may include locking the doors and locking the engine. Optionally, when the mobile phone 2 with the mobile phone case leaves the signal range 3, the vehicle 1 is automatically locked again within a period of time.

[0053] In scenario B, when the mobile phone 2 (a mobile phone with a mobile phone case, which will not be described later) appears within the signal range 3 of the vehicle 1 (i.e., scenario A changes to scenario B), the mobile phone 2 with a mobile phone case can receive the radio frequency signal sent by the vehicle 1, and then, based on the received radio frequency signal and radio frequency protocol, feed back a radio frequency signal that meets the requirements to the vehicle 1 to open the vehicle 1. Alternatively, within a certain range from the vehicle (i.e., signal range 3), the user presses the button of the mobile phone case to activate the signal receiving module of the mobile phone case, and then feeds back the corresponding signal after receiving the low-frequency signal sent by the vehicle, thereby realizing the opening and entry of the vehicle.

[0054] It should be noted that this application scenario is only an exemplary scenario description; the application scenarios involved in the embodiments of the present invention include but are not limited to the above application scenarios.

[0055] See also Figure 2 , Figure 2 Schematic diagram of the functional architecture of a mobile phone case with a car key function provided by an embodiment of the present invention; Figure 2 As shown, the mobile phone case 10 includes a signal transceiver module 101, a radio frequency identification module 102, a radio frequency adjustment module 103, a communication module 104, a button 105, an indicator light 106, a battery 107, a charging module 108 and a radio frequency data copying module 109. Among them, the signal receiving module 101 is connected to the radio frequency identification module 102; the radio frequency adjustment module 103 is connected to the radio frequency identification module 102; the communication module 104 is connected to the signal transceiver module 101; the button 105 and the indicator light (or status indicator light) 106 are connected to the signal transceiver module 101; the battery 107 is connected to the signal transceiver module 101; the charging module 108 is connected to the battery 107; and the radio frequency data copying module 109 is connected to the signal transceiver module 101. It can be understood that in the embodiment of the present invention, the signal transceiver module 101 has certain data processing and storage functions, which is equivalent to a signal transceiver module with integrated processing functions.

[0056] The signal transceiver module 101 is used to receive the first radio frequency signal sent by the target vehicle. Specifically, after the signal transceiver module built into the mobile phone case approaches the target vehicle (i.e., the vehicle that matches the vehicle key of the mobile phone case) or is within a certain distance range of the target vehicle, the signal receiving module that has been activated receives the first radio frequency signal from the vehicle; wherein the first radio frequency signal can be a low-frequency signal or a signal of a certain frequency; this application does not limit this.

[0057] The signal transceiver module 101 is also used to send a second RF signal corresponding to the first RF signal to the target vehicle according to the first RF signal, and the second RF signal is used to open or control the target vehicle. For example, after receiving the signal sent by vehicle A and responding to the signal of vehicle A, a feedback signal is sent to vehicle A to open the door of vehicle A, so that the driver or other personnel can enter vehicle A.

[0058] Optionally, the signal transceiver module 101 is also used to send a fourth radio frequency signal to the access control system according to the third radio frequency signal, and the fourth radio frequency signal is used to open the access control system. Among them, the third radio frequency signal is a radio frequency signal sent by the access control system to the mobile phone case to activate the mobile phone case or trigger the mobile phone case. The fourth radio frequency signal is a radio frequency signal for opening the access control that is fed back by the mobile phone case after receiving the signal sent by the access control. It can be understood that the signal transceiver module can also be applied to other similar scenarios, such as radio frequency remote control, payment, and identity recognition.

[0059] The radio frequency identification module 102 is used to identify the first radio frequency signal according to the first radio frequency protocol; specifically, the radio frequency identification module 102 identifies the first radio frequency signal from multiple signals according to the received first radio frequency signal and the preset first radio frequency protocol. Optionally, the radio frequency identification module simulates the radio frequency protocol of one or more frequency band radio frequency signals, and each radio frequency protocol is used to identify the corresponding radio frequency signal, so that radio frequency signals of the same type can interact accurately and avoid data interference from other signals. For example, the car key function of the mobile phone case is in a dormant state; when the mobile phone case enters the detection range (i.e., the signal receiving and transmitting range) of the target vehicle, the car key function of the mobile phone case is activated. Optionally, when the mobile phone case is within the detection range of the target vehicle and meets a specific trigger condition (for example, an infrared signal on the door handle of the target vehicle or a micro switch activated by a car handle device), the car key function of the mobile phone case is activated. When the mobile phone case receives the low-frequency signal sent by the target vehicle and the low-frequency signal matches the key function module of the mobile phone case, the key function module of the mobile phone case is awakened from the dormant state; the key function module analyzes the low-frequency signal of the target vehicle, processes the low-frequency signal according to a preset algorithm, and then generates a feedback signal corresponding to the low-frequency signal; the target vehicle receives and analyzes the feedback signal, and compares the feedback signal with a reference signal; when the feedback signal matches the reference signal, the door of the target vehicle is controlled to open or the vehicle is started. Optionally, the reference signal can be a signal calculated by the target vehicle based on the low-frequency signal sent by itself, or the relevant information of the reference signal is pre-stored in the system of the target vehicle.

[0060] The specific wake-up and response process between the car and the mobile phone case may include the following: the car's base station unit (or other unit) sends a low-frequency message encoded at 125Khz at a certain frequency to search for and wake up the transponder (corresponding to the mobile phone case) within a certain range; if the car fails to receive the response signal sent back by the transponder for a long time, it will enter a dormant state for a period of time and then send a wake-up signal. Once the transponder on the owner recognizes a legitimate wake-up signal, it will automatically send a radio frequency rolling code encoded message with a frequency of 433Mhz. After receiving the message sent by the transponder, the base station unit decodes it. If the recognition is successful, the command execution mechanism is controlled to open the car door. If the response signal from the transponder is not received after the car is unlocked, if the car door is closed at this time, it will be locked, and if the car door is not closed, an alarm will be prompted.

[0061] The RF adjustment module 103 is used to adjust the frequency band of the second RF signal according to the first RF signal. Specifically, the RF adjustment module 103 generates a second RF signal that meets the vehicle control characteristics according to the first RF signal and the first RF protocol. Optionally, the vehicle type and target vehicle that the mobile phone case matches are set through the RF identification module 102, and the frequency of the second RF signal that needs to be fed back is determined through the RF adjustment module 103.

[0062] The communication module 104 is used for the mobile phone case to exchange first data with the mobile phone, and the first data is used to configure the first radio frequency protocol in the communication process between the target vehicle and the mobile phone case. The mobile phone case exchanges data with the mobile phone through the communication module 104. Optionally, the signal transceiver module can be the main functional module of the mobile phone case, which can process and store data information; for example, by interacting with the application on the mobile phone, it can realize the update of smart key data of various models, the learning copy of universal radio frequency remote control, and the configuration of 125Khz / 13.56Mhz access card data.

[0063] One or more buttons 105 are connected to the signal transceiver module; an indicator light 106 is connected to the signal transceiver module; the button is used to turn on or off the signal transceiver module; the indicator light (not shown in the structure diagram of the present application) is used to indicate the working state of the signal transceiver module. One or more buttons can be set on the back or other parts of the mobile phone shell, and the embodiment of the present invention is not limited to this.

[0064] Optionally, the mobile phone case also includes a key storage compartment for storing a spare key of the target vehicle. For example, in the event that the car key in the mobile phone case fails or malfunctions, the spare key of the vehicle can be conveniently taken out of the mobile phone case to start the vehicle normally.

[0065] A battery 107, a charging module 108 connected to the battery 107, and a charging port of a mobile phone case connected to the charging module 108; the charging module is also connected to the signal transceiver module; the battery is used to supply power to the signal transceiver module. Optionally, the battery 107 can be a small-capacity lithium battery. The mobile phone case is provided with a charging port and a charging module (or charging circuit) connected to the battery 107, and the battery can be charged through a data charging line matching the charging port, which is conducive to using the mobile phone case to open the vehicle normally under normal circumstances. Optionally, the car key function integrated in the mobile phone case can be an active radio frequency identification RFID, or a passive radio frequency identification RFID, or a semi-active RFID. The embodiments of the present invention are not limited to this.

[0066] Optionally, when the mobile phone case is connected to an external power supply, the external power supply is connected to the power interface of the mobile phone case (such as a type-c or lightning interface) through a power cord, the power interface is connected to a power switching control circuit (such as an OTG switch module), and the power switching control circuit is connected to the battery of the mobile phone case; the USB is connected to the power switching control module through a corresponding circuit structure on a built-in circuit board of the mobile phone case; the USB structure of the mobile phone case is connected to the charging interface of the mobile phone through a power cord; when the mobile phone case is connected to an external power supply, the external power supply charges the battery inside the mobile phone case and the battery of the mobile phone.

[0067] Optionally, when the mobile phone case is not connected to an external power source, the USB interface of the mobile phone case is connected to the charging interface of the mobile phone through a power cord; at this time, the power switching control module switches to a mode of obtaining power from the mobile phone battery; when the mobile phone battery has sufficient power, the mobile phone battery charges the built-in battery of the mobile phone case to ensure that all necessary functions of the mobile phone case (such as the function of the car smart key) can operate normally.

[0068] The radio frequency data copying module 109 is used to copy the radio frequency data of the first remote controller to generate coding information that replaces the first remote controller; the communication module is also used to send the coding information of the first remote controller to the mobile phone. In a possible implementation, the radio frequency data copying module is also used to copy the electronic tag or contactless card. For example, by using the mobile phone shell buttons in conjunction with the signal transceiver module, some remote control functions of the target radio frequency remote controller are copied and learned to achieve the copying of some functions, which is beneficial for completing the operation of related functions by using the mobile phone shell without using the remote controller in special circumstances.

[0069] In the embodiment of the present invention, the problem of carrying car smart keys and RFID cards is solved, the mobile phone shell is combined with the car smart key function, and the smart keys and RFID data of different vehicles are further set through the mobile phone application, which can not only match with multiple different types of cars or electric bicycles, but also have the function of simulating community access control cards. Furthermore, an emergency key compartment can be set on the side or other parts of the mobile phone shell to store the car emergency key, so as to facilitate the door opening function in emergency situations.

[0070] Combination Figure 2 The functional architecture of the mobile phone case shown in the figure is described below. Figure 3 , Figure 3 Schematic diagram of an internal module of a mobile phone case provided by an embodiment of the present invention; Figure 3As shown, the built-in module of the mobile phone case may include a mobile phone case charging interface 37 (Type-C USB interface or Lightning interface), a universal serial bus (USB) interface 36, a smart card control module 31 communicating with the mobile phone (including a main control chip 302, an identification receiving circuit 301 and a radio frequency transceiver 303), a radio frequency identification processing unit 32 (in the embodiment of the present invention, the radio frequency signal processing for 13.56Mhz is taken as an example), a charging switching module 33 (taking the OTG charging switching module as an example, corresponding to the charging module 108), a small-capacity lithium battery 34, a multi-function button 35 and a light-emitting diode LED (i.e., an indicator light) 38; the identification receiving circuit 301 in the smart card control module is used to process the radio frequency signal of 125Khz. The mobile phone case involved in the embodiment of the present invention includes a mobile phone case body adapted to the target mobile phone; the mobile phone case body includes an inner side and an outer side; when the mobile phone case is installed on the target mobile phone, the inner side is in contact with the back of the target mobile phone; the outer side is opposite to the inner side, and is the side exposed to the outside and contacted by the user. The inner side is provided with a groove for installing the PCB and the battery. Among them, the main control chip 302 in the smart card control module can use a low-power 32-bit chip MAX32626; the chip has rich peripheral resources and a powerful security coprocessor to ensure the data security of the smart card control module. Among them, the 125Khz low-frequency receiving front-end circuit (i.e., identification receiving circuit) can use the NCF29A1 chip, which has 3-channel RFID (capable of 125KHz RFID) and active low-frequency receiving functions. Its internal integrated instruction set RISC can simulate different RFID protocols by running different programs, thereby realizing data interaction between the vehicle and the key, and at the same time has the performance of maintaining lower than standby power consumption (low power consumption of less than 5uA); under passive low-frequency field conditions, the unique low-power design of the NCF29A1 chip can not only realize the engine electronic anti-theft function of various vehicles but also simulate the 125Khz RFID function of the access card; the RF transceiver function of the smart card control module can be realized by the PXQ7981 chip; generally in the automotive smart key or Internet of Things (IOT) RF control scenario, the PXQ7981 chip supports 315 / 434 / 868 Industrial, Scientific and Hospital (IndustrialScientific The PXQ7981 chip is a universal RF transceiver in the ISM band, and has a phase-locked frequency synthesis circuit for fast frequency modulation, which is conducive to application in fast frequency modulation scenarios; the integrated antenna self-tuning control circuit supports multi-band applications, so that different types of vehicles can be controlled with the same hardware circuit. In addition, the unique wake-up working mode and raw data output mode of the PXQ7981 chip combined with the mobile phone application are conducive to the copy function of the universal RF remote control.

[0071] In addition to the car key function, the smart card control module can also copy and edit universal RF remote controls. The smart card control module uses mobile phone applications to learn RF data such as lighting remote controls, access control remote controls, and electric vehicle remote controls, and then generates a corresponding rolling code or fixed code to replace the learned universal RF remote controls. For example, different learned remote controls and virtual buttons can be selected through mobile phone applications to control different remote control devices.

[0072] It should be noted that the identification function of the RFID processing unit and the identification receiving circuit corresponds to the function of the RFID module 102. The receiving function of the identification receiving circuit and the RF transceiver correspond to the function of the signal receiving module 101. The frequency modulation function of the RF transceiver corresponds to the RF adjustment module 103. The copying and learning function of the smart card module corresponds to the RF copying module 109.

[0073] It can be understood that the main control chip 302 built into the mobile phone shell, as the core part of the smart card control module, has the function of communicating with the mobile phone application; this communication function corresponds to the communication module 104. Therefore, the communication mode of the smart card control module can be one or more of the following modes: USB connection, Bluetooth connection, or wireless network WIFI connection; in the embodiment of the present invention, the communication module 104 is connected through a USB interface, but the embodiment of the present invention does not limit the specific communication mode. For example, when the USB interface is used as the interaction mode between the smart card control module and the mobile phone application, the USB communication function on the smart card control module can be controlled by the main control chip MAX32626.

[0074] The 13.56Mhz radio frequency identification processing unit can use the chip MF1IC S50, combined with the 125Khz radio frequency identification function provided by NCF29A1 in the smart card control module, and can be applied to various application scenarios such as copying of community access control IC / ID cards and NFC electronic locks. Optionally, some mobile phones can use applications to copy NFC cards with the help of their NFC reading function. In a specific possible implementation, the battery 107 is a small-capacity lithium battery, and the charging switching module is an OTG charging switching module; the small-capacity lithium battery and the OTG charging switching module are both arranged inside the body of the mobile phone shell; when the mobile phone charging interface is normally connected to an external power supply, the small-capacity lithium battery is charged through the OTG charging switching circuit. When the mobile phone is turned off, the smart card control module can be powered by a small-capacity lithium battery to continue working. The OTG charging switching module can be composed of chips such as TS3USB221A-Q1 USB high-speed switching switch and BQ25155 lithium battery linear charging. The OTG charging switching module (i.e., the charging switching module) is controlled by the main control MAX32626 in the smart card control module.

[0075] Optionally, a multi-function button (i.e., button 105) and a status indicator light (i.e., indicator light 106) can be set on the back of the mobile phone case body (a position on the outer side or outer surface), so that the mobile phone case can be independently operated without using the mobile phone application; wherein, the multi-function button also has application functions such as answering and frequency modulation for quickly starting the vehicle key, which improves the convenience of using the mobile phone case; the embodiment of the present invention does not limit the specific function of the button. A key slot (i.e., a key storage compartment) is reserved on the side of the mobile phone case body, and the key slot can hold the mechanical key required for emergency unlocking of the car. Optionally, the multi-function button can also be set on the side of the mobile phone case or other parts of the mobile phone case; in the embodiment of the present invention, the multi-function button is set on the side of the shell as an example, but the specific setting position is not limited.

[0076] The embodiment of the present invention provides a mobile phone shell with a car smart key, wherein a smart card control module, a multi-function button, a function indicator light, a small-capacity lithium battery and a mobile phone shell data charging interface connected to a mobile phone charging interface are installed inside the mobile phone shell body; wherein the smart card control module is integrated with a programmable car smart key module, a 13.56Mhz radio frequency identification circuit and its antenna, and an OTG charging control circuit; the smart card control module can interact with the application program on the mobile phone end by Bluetooth or USB, and can realize the update of smart key data of various models, the learning copy of the universal radio frequency remote control and the configuration of the 125Khz / 13.56Mhz access card data; the mobile phone charging interface arranged below the mobile phone shell body can realize the same function as the mobile phone charging port through the control circuit on the control board. Using the mobile phone shell as a carrier of the car key and the radio frequency identification tag can not only effectively protect the mobile phone and thus prolong the service life of the mobile phone, but also flexibly realize the control of various types of cars and access control systems, and reduce the carrying of daily items. Combined with the powerful interactive function of the mobile phone application, through the high-integration integration solution, the vehicle control and the replacement of other remote control device functions are realized without excessively increasing the shell size and affecting the feel.

[0077] The functional architecture of the mobile phone case and the modules under the architecture are described above. The following describes the various parts in combination with a mobile phone case structure. Since there are many mobile phone models and their structures are different, only one of them is taken as an example below to illustrate the specific structure of the corresponding mobile phone case.

[0078] See also Figure 4-Figure 8 , Figure 4 1 is an exploded schematic diagram corresponding to a physical structure of a mobile phone case matched with a mobile phone provided in an embodiment of the present invention; Figure 4As shown, a mobile phone 45 is installed in a mobile phone case 40; the mobile phone case 40 also includes a key structure 41 and a cover plate 44. The mobile phone case 40 has a built-in PCB 43 and a support plate 42; wherein the support plate 42 is used to support the PCB 43; when the PCB 43 is a flexible printed circuit (FPC), the strength of the PCB 43 is enhanced and the patch in the chip production process is convenient; the PCB 43 can be integrated with a signal transceiver module, a radio frequency identification module, a communication module and a radio frequency data copying module to enrich the functions of the mobile phone case; for example, matching with the target vehicle to replace the car smart key; copying a specific type of remote control and cooperating with the mobile phone application to replace the remote control; copying the data of the access card or other electronic tags that can be copied to open the access control or replace the corresponding electronic tags.

[0079] It is understandable that the above structure is an exemplary structure provided by an embodiment of the present invention. Among them, the key structure 41 can be used as a part of the mobile phone shell body 40. Or the key structure 41 is combined with the long strip protrusion on the left side of the PCB43. The cover plate 44 covers the circuit board for protection. Optionally, the antenna integrated in the PCB43 can also be integrated in the mobile phone shell body 40 or other parts. The embodiment of the present invention is not limited to this.

[0080] See also Figure 5 , Figure 5 is a partial structural schematic diagram of a mobile phone case provided by an embodiment of the present invention; Figure 5 As shown, button groups are provided on the left and right sides of the mobile phone case 40, which are respectively a first button group 401 (corresponding to the aforementioned button 105) and a second button group 402. Among them, the first button group 401 includes one or more buttons; three buttons are used as an example for illustration in the figure. The first button group 401 corresponds to the multi-function button in the aforementioned embodiment, which is used to open the car door or activate the circuit module built into the mobile phone case. For example, after entering the signal receiving and transmitting range of the target car, press a specific button in the first button group 401 to open the vehicle or start the vehicle. Optionally, the button functions included in the first button group 401 can be set through a mobile phone application; for example, when the first button group 401 includes multiple buttons, pressing a specific button is used to open the vehicle. When the first button group 401 has only one button, long pressing the button for a few seconds is used to open the vehicle, etc. It can be understood that, Figure 6 This embodiment of the present invention provides a Figure 5 The schematic diagram of the structure of the mobile phone with the mobile phone shells shown in the figure; combined with Figure 6 In the structure of the mobile phone 45 shown, the second button group 402 may also include three buttons, specifically "+", "-" and "power button", which are used for increasing the volume, decreasing the volume and the power button of the mobile phone respectively.

[0081] See also Figure 7-Figure 8 , Figure 7 Schematic diagram of the structure of a cover plate inside a mobile phone case provided by an embodiment of the present invention; in the embodiment of the present invention, the cover plate 44 can be a steel plate, a plastic plate, a glass plate or a plate of other materials; the embodiment of the present invention does not limit the material of the cover plate, and takes a steel plate as an example for description. ; Figure 8 The figure is a schematic diagram of the PCB structure of a mobile phone case provided by an embodiment of the present invention. Figure 7 The back side and the surroundings of the steel plate are provided with a number of connection parts, so that after the steel plate 44 covers the mobile phone case 40, it not only fits with the protruding part of the PCB 43, but also can be fixed to fit with the inner side of the mobile phone case. Figure 7 The steel plate shown (i.e., the cover plate) covers the Figure 8 The PCB 43 shown is fitted with the inner side of the mobile phone case to protect the built-in PCB of the mobile phone case.

[0082] See also Figure 9-10 , Fig. 9 This embodiment of the present invention provides a Figure 8 A schematic diagram of a first component of the PCB shown; Fig.10 This embodiment of the present invention provides a Figure 8 The second component schematic diagram of the PCB is shown in FIG. Specifically, the overall circuit board 80 can be composed of a two-layer structure. Fig. 9 and Fig.10 As shown, the board close to the mobile phone shell and in contact with the mobile phone shell is the back support plate 42 (a 0.2 mm thick steel sheet is used as an example in the embodiment of the present invention), and the side away from the mobile phone shell and in contact with the cover plate is the front PCB43; the front PCB43 is shown to cover the back steel sheet 42; since the upper right corner of the PCB43 integrates an antenna of a certain space volume (for example, a 125Khz low-frequency antenna, which is used for the radio frequency identification function required by the electronic anti-theft and access control system of the automobile engine), the steel sheet 42 on the back can be designed to be L-shaped to avoid blocking the antenna, and the steel plate can be used for support at the antenna. The long strip metal protrusion on the left side of the front PCB43 is connected to the button on the left side of the mobile phone shell (i.e., the button in the first button group) to ensure the normal use of the first button group. The circular protrusions 431 and 432 on the left side of the front PCB can be battery mounting parts for placing small-capacity lithium batteries. The circular protrusions in the lower right corner of the front and the two rectangular protrusions 433 can be inductor mounting parts for mounting inductors of corresponding shapes on the PCB.

[0083] In addition, in other specific embodiments, the mobile terminal protective shell involved in the embodiments of the present invention can be a shape that matches the corresponding mobile terminal. For example, when the mobile terminal is a tablet computer, the size of the mobile terminal protective shell matches the tablet computer, and the rear lens and side button parts of the tablet computer are adapted to the protective shell. The outer side of the mobile terminal protective shell is generally provided with patterns, texts and other symbolic markings, the inner side is in contact with the mobile terminal, and the inner side has a built-in circuit board that bears the function of the car smart key, access control or remote control. A key storage slot can also be provided in the protective shell to store emergency keys.

[0084] When the mobile terminal is an e-book reader, the mobile terminal protective shell can be a protective shell or protective cover adapted to the e-book reader. When the back of the e-book reader can be provided with a lens, the side can be provided with a data or charging interface, a power button, a volume or brightness adjustment button, an earphone jack, a microphone hole and a speaker hole, etc., the protective shell is reasonably arranged at the corresponding positions of the above parts to avoid hindering the normal use of the device. A chip or circuit module that assumes the function of a car smart key can be set inside the protective shell.

[0085] It is understandable that the types of mobile terminals may include mobile phones, notebooks, point of sale (POS), etc. No further description will be given here based on the specific types of mobile terminals, and reference may be made to the related description of the mobile terminal protective case mentioned above.

[0086] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A mobile terminal protective case, characterized in that: include: A signal transceiver module, a radio frequency identification module, a radio frequency adjustment module, a radio frequency data copying module, a communication module, a button and a status indicator light; wherein the radio frequency identification module, the radio frequency data copying module, the communication module, the button and the status indicator light are respectively connected to the signal transceiver module; the radio frequency adjustment module is connected to the radio frequency identification module; The communication module is used to perform data interaction with the mobile phone application based on USB connection, Bluetooth connection or wireless network WIFI connection, and receive the model smart key data of the target vehicle sent by the mobile phone application when the model of the target vehicle is selected; the model smart key data is used to configure the first radio frequency protocol in the communication process between the target vehicle and the mobile terminal protective shell; The button is used to turn on or off the signal transceiver module; The status indicator light is used to indicate the working status of the signal transceiver module; The signal transceiver module is used to receive the first radio frequency signal sent by the target vehicle when the signal transceiver module is in an activated state; The radio frequency identification module is used to identify the first radio frequency signal according to the first radio frequency protocol; The RF adjustment module is used to generate a second RF signal that meets the vehicle control characteristics of the target vehicle according to the first RF signal and the first RF protocol; The signal transceiver module is further used to send the second radio frequency signal to the target vehicle, and the second radio frequency signal is used to start or control the target vehicle; The radio frequency data duplication module is used to duplicate the radio frequency data of the first remote controller to generate coding information that replaces the first remote controller; The communication module is also used to send the coding information of the first remote controller to the mobile phone application so as to select different learned remote controllers and virtual buttons to control different remote control devices through the mobile phone application.

2. The mobile terminal protective case according to claim 1, characterized in that: The RF adjustment module is used to determine the first RF protocol according to the vehicle type smart key data; the first RF protocol is used to indicate the recognition range of the frequency of the first RF signal and the frequency of the second RF signal.

3. The mobile terminal protective case according to claim 1, characterized in that: A mobile terminal compatible with the mobile terminal protective shell cooperates with the mobile terminal protective shell; in a scenario where the mobile terminal protective shell is applied to a mobile phone, the mobile terminal protective shell is a mobile phone shell.

4. The mobile terminal protective case according to claim 1, characterized in that: The mobile terminal protective shell further comprises a battery, a charging module connected to the battery, and a charging port of the mobile terminal protective shell connected to the charging module; the charging module is also connected to the signal transceiver module; The battery is used to supply power to the signal transceiver module; The charging port of the mobile terminal protective shell is used to charge the battery when the mobile terminal protective shell is connected to an external power source.

5. The mobile terminal protective case according to any one of claims 1 to 4, characterized in that: The operating frequency of the first radio frequency signal includes one or more of 125Khz, 13.56Mhz and 22Khz.

6. The mobile terminal protective case according to claim 1, characterized in that: The first remote controller is a universal radio frequency remote controller.

7. The mobile terminal protective case according to claim 1, characterized in that: The radio frequency data copying module is also used to copy the data of the electronic tag or the contactless card.

8. A mobile terminal protective case, characterized in that: include: Shell, printed circuit board PCB and cover plate; wherein, The inner surface of the housing is provided with a groove, and the inner surface is in contact with the mobile terminal; the PCB is arranged in the groove, and the cover plate covers the PCB and fits the inner surface of the housing; the PCB is provided with a battery mounting portion and an inductor mounting portion; the PCB is provided with a signal transceiver module, a radio frequency identification module, a communication module and a radio frequency data copying module; the outer surface of the housing is provided with an indicator light and one or more buttons; The communication module is used to perform data interaction with the mobile phone application based on USB connection, Bluetooth connection or wireless network WIFI connection, and receive the model smart key data of the target vehicle sent by the mobile phone application when the model of the target vehicle is selected; the model smart key data is used to configure the first radio frequency protocol in the communication process between the target vehicle and the mobile terminal protective shell; The button is used to turn on or off the signal transceiver module; The indicator light is used to indicate the working status of the signal transceiver module; The signal transceiver module is used to receive the first radio frequency signal sent by the target vehicle when the signal transceiver module is in an activated state; The radio frequency identification module is used to identify the first radio frequency signal according to the first radio frequency protocol; The signal transceiver module is further used to send a second radio frequency signal corresponding to the first radio frequency signal to the target vehicle according to the first radio frequency signal, and the second radio frequency signal is used to start or control the target vehicle; The radio frequency data duplication module is used to duplicate the radio frequency data of the first remote controller to generate coding information that replaces the first remote controller; The communication module is also used to send the coding information of the first remote controller to the mobile phone application so as to select different learned remote controllers and virtual buttons to control different remote control devices through the mobile phone application.

9. The mobile terminal protective case according to claim 8, characterized in that: The housing is provided with a mobile terminal protective shell charging port and a key storage compartment; The charging port of the mobile terminal protective shell is used to charge the battery when the mobile terminal protective shell is connected to an external power source; The key storage compartment is used to store the spare key of the target vehicle.

10. The mobile terminal protective case according to any one of claims 8 or 9, characterized in that: The outer surface has no contact with the mobile terminal; the outer surface is opposite to the inner surface.

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