STATUS INDICATION SYSTEM FOR A LOCKING SYSTEM AND ASSOCIATED METHOD, PARTICULARLY FOR VEHICLE REMOTE CONTROL

FR3063560B1Active Publication Date: 2025-04-11LO MONACO DAMIANO
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Patent Information

Application Number
FR2017051698
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2017-03-02
Publication Date
2025-04-11
Estimated Expiration
2037-03-02

AI Technical Summary

Technical Problem

Existing locking system confirmation methods provide only instantaneous visual or auditory signals that are limited to the immediate vicinity of the system, making it difficult for users to verify the system's state from a distance or when the system is out of sight, and are prone to involuntary changes.

Method used

A method and system that uses a control unit to transmit state information to a remote control, allowing the remote control to modify sensory stimuli (e.g., light, sound, vibration) to indicate the locking system's state, regardless of distance, through electromagnetic or acoustic waves.

Benefits of technology

Enables continuous and distant verification of the locking system's state, preventing involuntary changes and ensuring users are aware of the system's status at all times.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a method for indicating the state of a locking system that can vary between at least one locked state and at least one unlocked state. This method is characterized in that it comprises the steps of: locking or unlocking the locking system; transmitting, by a control unit connected to the locking system, state information data specific to the locked or unlocked state in which the locking system is located; and, in response to the reception or reading of said state information data by a remote control transceiver, modifying or maintaining the state of one or more sensory stimulus emitters of the remote control so as to represent the state of the locking system. The remote control then displays the locked state continuously or regularly, even when out of range.
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Description

- 1 - "State indication system for a locking system and associated method, in particular for vehicle remote control" The invention relates to a method for indicating the state of a locking system that can vary between at least one locked state and at least one unlocked state, said indication method being characterized in that it comprises the steps of: - locking or unlocking said locking system, - emitting, by a control unit connected to the locking system, state information data, specific to the locked or unlocked state in which the locking system is, and - in response to a reception or reading of said state information data by a transmitter-receiver of a remote control, modifying or maintaining a state of one or more sensory stimulus emitters of the remote control so as to represent said state of the locking system.The remote control then displays the locking status continuously or regularly, even when out of range. Technical Field The present invention relates to the field of property protection, particularly for vehicles, and more specifically to remote locking systems for property protection systems. The protection systems concerned may include, among others, a door lock, an engine starter system, an alarm system, or a surveillance system. The present invention relates in particular to a remote control for a remote locking system that indicates the status of the locking system at all times. The present invention also relates to a method for continuously indicating the status of such a locking system. Prior Art Systems for the instantaneous confirmation of a change in the state of a locking system are known in the prior art.This confirmation occurs simultaneously with the action of 3063560 - 2 - modification of the locking system state initiated by a user. The warning element involved in the instant confirmation of the change in the locking system state is always mounted on a support located in the immediate vicinity of the locking system. This warning element is most often a light source emitting a light signal when the locking system is locked or unlocked by a user. Such an instant confirmation system is fitted to the majority of vehicles. Confirmation of the vehicle locking or unlocking consists of the emission of a short-duration light signal by one or more of the vehicle's lighting devices, or even an audible signal.Generally, and depending on the vehicle make, a single light signal is emitted when unlocking and two lights are emitted when unlocking, or vice versa. These instant confirmation systems for changes in the state of a locking system do not allow for subsequent verification of the locking system's status by the user. In particular, when the user does not have a clear view of the horn or when the horn is out of sight, the user cannot confirm whether or not their attempt to lock or unlock the locking system was successful. Furthermore, an unintentional change in the locking system's state can occur, for example, if a button on the remote locking / unlocking device is accidentally pressed while it is in the user's pocket.In this case, although the user may have seen confirmation of the system locking or unlocking at the time of the lock or unlock that they intentionally initiated, the locking system may be in a different state than they believe it to be. One object of the invention is to provide a system for indicating the status of a locking system, and an associated method, making it possible to overcome, at least in part, the drawbacks of existing confirmation systems. 3063560 - 3 - One object of the invention is to allow a user to know the status of a locking system at any time. Another object of the invention is to allow a user to know the status of a locking system regardless of the distance separating them from the locking system.Description of the invention To this end, the invention proposes a method for indicating the state of a locking system which can vary between at least one locked state and at least one unlocked state, said indication method being characterized in that it comprises the steps of: -locking or unlocking said locking system, -emitting, by a control unit connected to the locking system, state information data, specific to the locked or unlocked state in which the locking system is, and -in response to a reception or reading of said state information data by a transmitter-receiver of a remote control, modifying or maintaining a state of one or more transmitters of sensory stimulus of the remote control so as to represent said state of the locking system.An indication method is defined as a method whose purpose is to indicate, or represent, to a user the state of the locking system. The locking or unlocking of the locking system can be operated electronically. Locking is defined as the transition of the locking system to a locked state. Unlocking is defined as the transition of the locking system to an unlocked state. A state of the locking system can vary between an activated state and a deactivated state, and vice versa, of an alarm, monitoring, security, immobilizer, anti-theft, or electronic system. An activated state is defined as a state in which the system is operating and implementing a method, or performing a task, for which it is programmed and / or configured. In contrast to the activated state, the deactivated state is defined as a state in which the system is not operating.5. The state of the locking system can also vary between a moving state and a stationary state, and vice versa, for a vehicle. The mode of transmission of information data can be any type of signal propagating through space, such as, in particular: - an acoustic wave, 10 - an electromagnetic wave, such as, in particular: - a radio wave, for example, an Ultra High Frequency wave, particularly according to standards called Bluetooth, Wi-Fi, - a light wave, for example, infrared. The transmitted information data may be subject to encryption. 15. "Specific information data of the locking system state" refers to information data that is characteristic, or representative, of the state of the locking system. The information data can be transmitted: 20 - automatically, or - as a result of a user action.Information data can be transmitted in response to a request from the remote control. A control unit is defined as any electronic device capable of being programmed to execute a sequence of instructions, in particular locking or unlocking the locking system. The transmission of information data can be carried out, in particular, by a transmitter or a transceiver of a vehicle's on-board computer. Status information data can be transmitted, in particular, periodically. All or part of the specific status information data of the locking system can be stored in the remote control's electronic memory. Reading status information data means reading said status information data from an electronic memory. Reading status information data can be carried out periodically.5. Reading state information data can be performed as a result of a user action. The state change of the locking system, locking or unlocking, can be: -automatic, or 10 -manual, in particular, by a user action. Automatic state change of the locking system can be implemented by the control unit. In the case of a vehicle locking system, automatic state change of the locking system can be 15 implemented by starting the vehicle in motion. The state change of one or more sensory stimulus emitters can occur, preferably, during a change in the received or read state information data. The state change of one or more sensory stimulus emitters 20 can include the activation and / or deactivation of one or more sensory stimulus emitters.The modification of the state of one or more sensory stimulus emitters may include an increase and / or a decrease and / or a modulation of the emission intensity of one or more sensory stimulus emitters. The emission of a sensory stimulus may be implemented asynchronously with respect to the reception or reading of state information data. A sensory stimulus is understood to be a sensory stimulation affecting a perceptual organ of a human user, or even a mammal. Such sensory stimulation may be electromagnetic, mechanical, or chemical in nature. Examples of such sensory stimulation include visual, auditory, mechanical (particularly vibratory), and olfactory stimulation. Preferably, such sensory stimulation may be localized. Such sensory stimulation may exhibit variable intensity over time.Such sensory stimulation may include the emission of several successive sensory stimuli at a constant, different, and / or variable frequency. Such sensory stimulation may include a sequence of emission of one or more sensory stimuli. Such an emission sequence may include the emission of a sensory stimulus: - of constant or variable intensity, and / or - of constant or variable emission frequency. An emission sequence may include the emission of several sensory stimuli: - of the same or different types, and / or - of identical constant or variable intensities, or - of different constant or variable intensities, and / or - of identical constant or variable emission frequencies, or - of different constant or variable emission frequencies.A given sensory stimulus emitted as part of the method according to the invention, or a given sequence of one or more sensory stimuli 25, may preferably be specific to a state of the locking system; said sensory stimulus or said sequence of emissions representing the state of the locking system. The locking or unlocking of the locking system can 30 be implemented in response to the control unit receiving a request to lock or unlock the locking system. The request to lock or unlock the locking system can be issued manually, in particular by an action of a user. 3063560 - 7 - In the case of a vehicle locking system, the request to lock or unlock the locking system can also be issued as a result of the vehicle starting or stopping.5. The locking or unlocking request can be issued automatically, in particular, as a result of a change in the state of an RFID system connected to the control unit. The term RFID (Radio Frequency Identification) refers to identification by radio frequency. The change in the state of the RFID system can include: - a reading of an electronic chip by a reader of an RFID system connected to the control unit, or - an interruption of the reading of the electronic chip by the reader of an RFID system.The term "chip reading," as understood by those skilled in the art, refers to a generic radio-frequency identification (RFID) process implemented by an RFID system, consisting of: - transmission of a request by the reader, - reception of the request by a radio tag comprising an antenna and the electronic chip, - in response to the request, transmission of data stored in the electronic chip, - reception of the data by the reader. Changes to the state of the RFID system may also include: - an increase or decrease in the distance between the reader of the RFID system and the radio tag of the RFID system, and / or - entry or exit of the radio tag of the RFID system into a transmission zone of the reader of the RFID system. The lock or unlock request may be issued by the reader of the RFID system.The request to lock or unlock the locking system can be issued by the remote control's transceiver. Status information data can be issued in response to a change in the state of the locking system. According to the invention, each time the transceiver receives status information data, the status information data is: - upon receipt by the remote control's transceiver for reading, stored in an electronic memory of the remote control; and - subsequently read from said memory and used to maintain or modify said state of one or more sensory stimulus emitters. The status information data can be issued, in particular, as a result of an increase in the distance between the RFID system reader and the RFID system's radio tag.15 According to a second aspect of the invention, a state indication system for a locking system is proposed, which can vary between at least one locked state and at least one unlocked state, said indication system comprising: 20 - a remote control including a wireless digital communication transceiver and one or more sensory stimulus transmitters, - a control unit connected to a locking system, said control unit being configured and / or programmed to lock or 25 unlock said locking system.According to the second aspect of the invention, the indication system is characterized in that: - the control unit is configured and / or programmed to emit state information data that is specific to the locked or unlocked state of the locking system, and - the remote control is arranged and / or programmed to modify the state of the sensory stimulus emitter(s) so as to represent said state of the locking system, in response to the reception or reading of said state information data. The locking system may be an electronic locking system. A sensory stimulus emitter may emit one or more sensory stimuli of the same or different natures. A sensory stimulus emitter may, in particular, be an electromechanical device.The electromechanical device may be, in particular, a vibrator. 10 The electromechanical device may be arranged and / or programmed to generate, in particular, a mechanical vibration of all or part of the remote control. The electromechanical device may be arranged and / or programmed to generate, in particular, an acoustic wave. 15 The electromechanical device may be arranged and / or programmed to generate, in particular, an audible acoustic wave. The sensory stimulus emitter may be arranged and / or programmed to diffuse an aroma or odor. A sensory stimulus emitter may be an odor or aroma diffuser. 20 A sensory stimulus emitter may be an ultrasonic odor or aroma diffuser. The remote control may include a radio tag of an RFID system. 25 The term radio tag of an RFID system may be referred to by those skilled in the art as a transponder or tag.The RFID system's radio tag may include an antenna and an electronic chip. The remote control's transceiver may be the antenna of the RFID system's radio tag. The electronic chip may be configured and / or programmed to store all or part of the specific state information data of the locking system. In the case of a vehicle, an on-board computer may include the control unit. The on-board computer may include an RFID system reader. The on-board computer may include a transceiver. The on-board computer may include an RFID system reader complementary to the remote control's radio tag. The control unit may be configured and / or programmed to transmit state information data in response to a change in the locking system's state.10 The remote control's transceiver can be arranged and / or programmed to transmit a request to lock or unlock the locking system. The remote control may include one or more arranged push buttons. 15 The remote control can be arranged and / or programmed to transmit a request as a result of pressure being applied by a user to one of the push buttons. According to the invention, a sensory stimulus transmitter of the remote control may include one or more light sources, a light source being arranged and / or programmed to: - emit a given wavelength, or range of wavelengths, or - emit several given wavelengths, or ranges of wavelengths. A light source may include, in particular, a light-emitting device. A light source may be, in particular, a light-emitting diode.30 A light source may emit a monochromatic or polychromatic light wave. A sensory stimulus emitter may comprise one or more monochromatic light sources and / or one or more polychromatic light sources. 3063560 The indication system according to the invention may comprise several sensory stimulus emitters, each comprising a light indicator, and wherein each light indicator is arranged to emit a wavelength, or a range of wavelengths, different from a wavelength, or a range of wavelengths, of another of said light indicators. A light indicator may be a light-emitting diode. A light indicator may be arranged and / or programmed to emit continuously. 10 A light indicator may be arranged and / or programmed to emit intermittently.A sensory stimulus emitter may include a light-emitting area, said light-emitting area being constituted by at least one part of an optical device and being arranged to form a predetermined light pattern on a surface of the remote control; said optical device being arranged to diffuse at least a part of the light emitted by the light source(s) uniformly towards said light-emitting area. The light-emitting area may include one or more parts of the surface of the remote control. The light-emitting area may have a particular geometry, such as: - a border and / or a delineation, in particular, between sub-parts of the remote control, - a symbol and / or a logo and / or a pattern, - an outline of a part of the remote control, in particular, an outline of a push button and / or an outline of a logo and / or an outline of a pattern and / or an outline of a symbol.30 One or more parts of the optical device may constitute one or more parts of the remote control surface. The light pattern may include, in particular, a variation in light intensity along one or more directions of the emission area. 3063560 - 12 - The light pattern may include a variation in wavelength along one or more directions of the emission area. The light pattern may include a gradual variation in wavelength along one or more directions of the emission area, so as to form one or more gradients of a color along one or more directions of the emission area. The light pattern may include a gradual variation in light intensity along one or more directions of the emission area.10 The light source(s) may be arranged and / or programmed to: - emit a constant light intensity over time, and / or 15 - emit a light intensity that varies over time according to a predetermined emission sequence. A light source may be arranged and / or programmed to produce an instantaneous change in light intensity when transitioning from an off state to an on state, or vice versa. 20 A light source may be arranged and / or programmed to produce a gradual change in light intensity when transitioning from an off state to an on state, or vice versa. The change in intensity within an emission sequence may include a change in intensity between a minimum intensity 25 and a maximum intensity. The minimum intensity may be zero, corresponding to the source being off. The locking system may be a vehicle protection system 30.A vehicle is defined as any motorized machine capable of being set in motion. The protection system may be one or more locks on one or more parts of a vehicle. The protection system may be an immobilizer system. The protection system may be an anti-theft system. The protection system may be an alarm system. The protection system may be a surveillance system. The protection system may be a security system. The remote control may be a key and / or a remote control for locking a vehicle. According to a third aspect of the invention, a device is proposed arranged to provide remote control of a locking system according to the second aspect of the invention.Description of figures and embodiments Other advantages and features of the invention will become apparent from the detailed description of implementations and embodiments, which are by no means limiting, and the following attached drawings: - FIGURE 1 is a diagram illustrating the steps of the method of indicating the state of a locking system in an example of an embodiment, - FIGURES 2, 3 and 4 are schematic representations of an electronic locking system and a remote control of the electronic locking system equipped with the status indication system, - FIGURE 5 is a schematic representation of a remote control equipped with the status indication system.25. The embodiments described below are in no way limiting; variants of the invention may include, in particular, a selection of the described features, isolated from the other described features (even if this selection is isolated within a sentence comprising these other features), if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the prior art. This selection includes at least one feature, preferably functional, without structural details, or with only a portion of the structural details if this portion alone is sufficient to confer a technical advantage or to differentiate the invention from the prior art.With reference to Figures 1, 2, 3, and 4, a method of indicating the state of a locking system 1 of a vehicle equipped with an on-board computer 26 is described. This state can vary between at least one locked state 2 and at least one unlocked state 3. The locking 4 or unlocking 5 of the locking system 1 is described in two embodiments. In a first embodiment, the locking 4 and unlocking 5 are controlled by the user. A locking or unlocking request 14 is issued by a remote control 12 of the locking system 1 as a result of a user pressing one of the push buttons 15 of the remote control 12. If the vehicle is within range 16 of a transmission zone of a 15 transceiver 11 of the remote control 12, the locking or unlocking request is received 17 by the transceiver 6 of the on-board computer 26.As a result of receiving the locking or unlocking request 17, the on-board computer 26 activates the locking 4 or unlocking 5 of the locking system 1. According to a second embodiment, the locking 4 or unlocking 5 of the locking system 1 is performed by automatic detection, by the on-board computer 26, that the remote control 12 or another electronic key is near the vehicle. This presence detection is typically carried out by an RFID reader included in or connected to the on-board computer, which detects an RFID chip contained in the remote control, the lock key, or an unlocking card. An automatic identification request 18 is periodically issued by the transceiver 6 of the on-board computer 26.If the remote control 12 is within range of a transmission zone of the transceiver 6 of the on-board computer 26, the automatic identification request is received by the transceiver 11 of the remote control 12. As a result of receiving the automatic identification request, identification data, stored in the electronic chip 27 of the remote control 12, is transmitted by the transceiver 11 of the remote control 12. As a result of the transmission of the identification data, the identification data is received by the transceiver 6 of the on-board computer 26. As a result of receiving the identification data, a control unit of the vehicle's on-board computer 26 authenticates the data. identifications emitted 21 by the transmitter-receiver 11 of the remote control 12.If authentication 23 is positive, the on-board computer 26 activates the locking 4 or unlocking 5 of the locking system 1. 10 When the locking system 1 locks 4 or unlocks 5 the vehicle, the transceiver 6 of the on-board computer 26 transmits 8 status information data characteristic of the state, locked 2 or unlocked 3, in which the vehicle has been brought by the locking system 1. When the transceiver 11 of the remote control 12 of the 15 locking system 1 is within range 19 of the transmission area of ​​the transceiver 6 of the on-board computer 26, the transceiver 11 receives 9 the status information data. As a result of receiving 9 the status information data, the remote control triggers an emission 24 of light by a light-emitting diode 13 of the 20 remote control 12 so as to represent the state, locked 2 or unlocked 3, of the locking system 1.Simultaneously with the reception 9 of the status information data, the status information data 25 is saved in an electronic chip 27 of the remote control 12 so that it can be read 10 later by the remote control 12. The subsequent reading 25 10 can be performed accordingly, for example, by a user pressing a push button 15 of the remote control 12, while the remote control is out of range 16 of the transmission area of ​​the transmitter-receiver 11 of the remote control 12. 30 With reference to FIGURES 2, 3 and 4, an embodiment of the status indication system 26,12 of an electronic locking system 1 of a vehicle is described. The electronic locking system 1 is connected to an on-board computer 26 of the vehicle. The status indication system 26,12 includes a remote control 12.The remote control 35 includes a transceiver 11, two LEDs 13 integrated into two pushbuttons 15 (or corresponding to them), a self-contained electrical power source such as an electrical energy storage device (not shown), and an electronic chip 27. Advantageously, the electrical energy storage device 5 includes one or more batteries, or one or more accumulators. The on-board computer 26 includes a control unit 7 and a transceiver 6. The control unit 7 is configured and / or programmed to lock 4 or unlock 5 the locking system 1. The control unit 7 is also configured and / or programmed to transmit status information data 8 that is specific to the state, locked 2 or unlocked 3, in which the locking system 1 is located.In response to a reception 9 or a reading 10 of said state information data, the remote control 12 is arranged and / or programmed 15 to activate one of the light-emitting diodes 13 representing the state, locked 2 or unlocked 3, in which the locking system 1 is located. The transmitter-receiver 11 of the remote control 12 is arranged and / or programmed to transmit 14 a locking or 20 unlocking request. The transmission 14 of the locking or unlocking request is carried out as a result of a user pressing one of the pushbuttons 15 of the remote control 12. The control unit 7 is configured and / or programmed to, as a result of the locking 4 or unlocking 5 of the vehicle, transmit 8 of the state information data 25 which are specific to the state, locked 2 or unlocked 3. The light-emitting diode 13 indicating that the vehicle is in its unlocked state 2 emits in green.The light-emitting diode 13, indicating that the vehicle is in its locked state 3, emits red light. 30 With reference to FIGURE 5, embodiments of a remote control 12, contained in a plastic housing 121 which carries the end of a mechanical key 122, are described. This remote control is equipped with a status indicator system 26,12. Figure 5 illustrates an upper face 35 28 and a lower face 29 of the housing 121 of the remote control 3063560 - 17 - 12. The remote control 12 includes a light-emitting area 30 emitting light, extending over a portion of the surface of the remote control 12, along a border or lateral band separating the upper face 28 and lower face 29 of the housing 121 of the remote control 12. 5 The light-emitting area 30 consists of at least a partially transparent portion of the surface of the remote control 12.The material composing the surface of the remote control 12 is suitable for diffusing light; it may be, in particular, a polymer, a crystalline or amorphous material, an alloy such as ITO, or a composite material. Preferably, the luminous area 30 is arranged to diffuse light uniformly, for example by including an optical guide that receives light from a source internal to the housing and diffuses it evenly and uniformly across the surface of the remote control. In addition to or as an alternative to the luminous area 30, the lower face 29 of the remote control 12 includes an additional luminous area 31 forming a decorative pattern. This additional luminous area 31 may include, for example, a logo, in particular a brand logo such as the shield shape illustrated in the center of the housing in the example on the right of the figure.Alternatively, the upper face of the remote control includes additional illuminated areas. These additional illuminated areas form symbols representing locking system states. Here, an open padlock represents the vehicle's unlocked state, a closed padlock represents the vehicle's locked state, and a symbol represents the vehicle's trunk release. Alternatively, a light-emitting area is arranged to illuminate a light pattern in a distributed but not uniform manner. For example, in the case of the illuminated area, the pattern includes a color gradient that varies across the width of the border and extends uniformly along the illuminated area.Optionally, the remote control 12 is configured and / or programmed to change the state of the stimulus emitter by producing a gradual variation in light intensity during a transition from an off state to an on state, or vice versa, of a light-emitting diode 13 or the light-emitting zone 30, 31, or 32. For example, such an emission sequence is designed so that the time during which the light emitter 13, 30, 31, or 32 emits light is less than the time during which the light-emitting diode 13 is off. This allows, for example, limiting the power consumption of the remote control 12 and enabling more discreet operation, while still providing occasional explicit reminder visible from a distance if the key or remote control is placed in a visible location.For example, to confirm that the system is locked, the illuminated area emits a light signal in the form of one or more flashes every 15 or 30 seconds, each lasting one or a few seconds, within a period of off or low intensity. Alternatively, the emission sequence is designed so that the on-time is greater than the time the LED is off. Possibly, the emission sequence is designed so that, for example, the light intensity of the illuminated area is never zero. Of course, the invention is not limited to the examples just described, and many modifications can be made to these examples without departing from the scope of the invention.25 Thus, in combinable variants of the embodiments previously described: - the luminous intensity of a light emission zone 30, 31, 32 varies periodically over time, - the variation in intensity varies continuously or takes one or 30 several intermediate values ​​between the off state and the maximum luminous intensity of a light-emitting diode 13. In addition, the different characteristics, forms, variants and embodiments of the invention can be associated with each other.

Claims

CLAIMS 1. Method for indicating a state of a locking system which can vary between at least one locked state and at least one unlocked state, said indication method being characterized in that it comprises the steps of: - locking or unlocking of said locking system, - transmission, by a control unit connected to the locking system, of status information data, specific to the state, locked or unlocked, in which the locking system is located, and - in response to a reception or reading of said status information data by a transceiver of a remote control, modifying or maintaining a state of one or more sensory stimulus transmitters of the remote control so as to represent said state of the locking system; said sensory stimulus comprising an emission of several successive sensory stimuli according to a different and / or variable frequency, a given sensory stimulus is specific to a state of the locking system; said sensory stimulus representing the state of the locking system.

2. Method according to claim 1, wherein the sensory stimulus comprises a sequence of emission of one or more sensory stimuli, said emission sequence comprising the emission of a sensory stimulus: -of constant intensity and constant or variable emission frequency, or - of variable intensity and constant or variable emission frequency, a sequence of emission of one or more given sensory stimuli is specific to a state of the locking system; said sequence of emission representing the state of the locking system, 3. Method according to claim 2, in which the emission sequence comprises the emission of several sensory stimuli: -of the same nature or of different natures, and / or - of identical constant or variable intensities, or -of different constant or variable intensities, and / or - of identical constant or variable emission frequencies, or -different constant or variable emission frequencies.

4. A method according to any preceding claim, wherein the status information data is output in response to a change in the status of the locking system.

5. A method according to any preceding claim, wherein, upon each receipt of status information data by the transceiver, said status information data is: - when received by the transmitter / receiver of the remote control to be read, stored in an electronic memory of the remote control; and - subsequently, or periodically, read from said memory and used to maintain or modify said state of one or more sensory stimulus emitters.

6. System for indicating the state of a locking system which can vary between at least one locked state and at least one unlocked state, said indication system comprising: - a remote control comprising a wireless digital communication transceiver and one or more sensory stimulus transmitters, said sensory stimulus transmitter(s) being arranged to emit several successive sensory stimuli according to a different and / or variable frequency; a given sensory stimulus is specific to a state of the locking system; said sensory stimulus representing the state of the locking system, - a control unit connected to a locking system, said control unit being configured and / or programmed to lock or unlock said locking system; said indication system being characterized in that: -the control unit is configured and / or programmed to output status information data that is specific to the state, locked or unlocked, in which the locking system is located, and -the remote control is arranged and / or programmed to modify the state of the sensory stimulus transmitter(s), so as to represent said state in which the locking system is located, in response to a reception or reading of said state information data, said sensory stimulus transmitter is an electromechanical device: -in particular, a vibrator, and / or -arranged and / or programmed to generate, in particular, an audible acoustic wave, and / or -arranged and / or programmed to diffuse an aroma or an odor, and / or said sensory stimulus emitter comprises one or more light sources, a light source being arranged and / or programmed to: - emit a given wavelength, or range of wavelengths, or - emit several wavelengths, or several ranges of wavelengths, given, said light source is arranged and / or programmed: -to produce an instantaneous variation in light intensity during a transition from an off state to an on state, or vice versa, or -to produce a progressive variation in light intensity during a transition from an off state to an on state, or vice versa.

7. The system of claim 6, wherein the control unit is configured and / or programmed to output the status information data in response to a change in the status of the locking system.

8. System according to claim 6 or 7, in which the transmitter-receiver of the remote control is arranged and / or programmed to transmit the request for locking or unlocking the locking system.

9. System according to any one of claims 6 to 8, in which the light source(s) are arranged and / or programmed to emit a light intensity varying over time according to a predetermined emission sequence, the light source(s) being light-emitting diodes; said emission sequence is designed so that the time during which the light emitter 13, 30, 31, 32 emits is less than the time during which the light-emitting diode 13 is off, or said emission sequence is designed so that the illuminated duration is greater than the time during which the light-emitting diode 13 is off.

10. A system according to any one of claims 6 to 9, comprising a plurality of sensory stimulus emitters each comprising a light indicator and wherein each light indicator is arranged to emit a wavelength, or a range of wavelengths, different from a wavelength, or a range of wavelengths, of another of said light indicators.

11. A system according to any one of claims 6 to 10, wherein a sensory stimulus emitter comprises a light emitting area, said light emitting area being constituted by at least a portion of an optical device and being arranged to form a predetermined light pattern on a surface of the remote control; said optical device being arranged to diffuse at least a portion of the light emitted by the light source(s) towards said emitting area in a uniform manner.

12. System according to any one of claims 6 to 11, in which the emission zone has a particular geometry, such that: - a border and / or a delineation, in particular, between sub-parts of the remote control, - a symbol and / or a logo and / or a pattern, - an outline of a part of the remote control, in particular, an outline of a push button and / or an outline of a logo and / or an outline of a pattern and / or an outline of a symbol.

13. System according to any one of claims 6 to 12, wherein the locking system is a vehicle protection system.

14. System according to any one of claims 6 to 13, in which the remote control is a key and / or a remote locking remote control of a vehicle. 5 15. Device characterized in that it is arranged to provide remote control of a locking system according to any one of claims 6 to 14.