JP2009221841A - Remote controlling transmitter and remote controlling receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote controlling system, restraining increase in cost, achieving miniaturization and acquiring the control state of a controlled device at a portable remote terminal side. <P>SOLUTION: From an on-vehicle machine 20, a signal showing the operating state of the on-vehicle machine 20 (the controlled device) is transmitted from an LED 22 used for displaying the operating state on the on-vehicle machine 20 side. At the portable remote terminal 1 side, a signal showing the operating state of the on-vehicle machine 20 side is received by a light receiving part 3, the received signal is stored, and when a user performs state confirming operation, the stored operating state of the on-vehicle machine 20 is displayed using an LCD 6 and an LED 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a remote control transmission device and a remote control reception device in a remote control system using radio waves and light rays (infrared rays, etc.), and more particularly to the opening / closing and theft prevention of keys such as automobile doors and trunks. The present invention relates to a remote control transmission device and a remote control reception device in a remote control system that can be suitably used for a keyless entry system for remotely controlling a device.

  In recent years, remote control systems have been adopted in various devices because of their convenience. For example, in automobiles, a keyless entry system is widely used to facilitate getting on and off the car and loading luggage onto the trunk when it is raining or has a lot of luggage. The keyless entry system consists of an in-vehicle device (receiver) installed in an automobile and a portable device (transmitter) possessed by the user. If the user operates a switch on the portable device, the operation is supported. Signal is transmitted from the portable device. The in-vehicle device receives the signal transmitted from the portable device, and in response to the signal, locks (locks) / unlocks (unlocks) the door key, locks (locks) the trunk key, opens the trunk, Control of arm of anti-theft device (mode that activates alarm device when anti-theft is detected, anti-theft operation such as disabling engine), disarm (mode that does not perform anti-theft operation), etc. Do. Generally, radio waves and infrared rays are used as these transmission signals.

  However, since the remote control is usually operated from a distance, it is not possible to know what state the controlled object is in. For example, in a keyless entry system, you have operated, but do not know whether the key is actually locked or unlocked, or is the anti-theft device armed or disarmed? There is a problem that I do not understand.

  In particular, when a plurality of operation switches are also used in a portable device, for example, when the lock / unlock state changes alternately every time one switch is operated, it becomes impossible to know which state has been reached by the operation of the portable device. In particular, when leaving the vehicle, it is necessary to return to the vehicle to check the key state even if the lock operation is performed by remote control, and the convenience of remote control is impaired.

  As a method of solving this problem, bidirectional communication is performed between the in-vehicle device and the portable device, a signal indicating the control state is transmitted from the in-vehicle device side to the portable device side, and the signal indicating the control state is received by the portable device. There is a way to display. However, in this method, it is necessary to newly install a transmitter or a receiver in the in-vehicle device and the portable device, and there is a problem that the cost is increased and it is difficult to reduce the size.

Means for solving the problems and their effects

  The present invention has been made in view of the above problems, and realizes a remote control system that can be miniaturized without causing an increase in cost and can grasp the control state of the controlled device on the portable device side. An object of the present invention is to provide a remote control transmission device and a remote control reception device.

  In order to achieve the above object, a remote control transmission device (1) according to the present invention is a remote control device that is operated by a user, receives an instruction signal from the transmission device, and is remotely controlled according to the instruction signal. In a transmission device of a remote control system comprising a reception device for controlling a device to be transmitted, from a display unit, a reception means for receiving data transmitted from the reception device, and the reception device received by the reception means Storage control means for storing in the storage means data indicating the operating state of the receiving device that is transmitted, and operation of the receiving device stored in the storage means when an operation for confirming the state is performed by the user Receiving device state display control means for displaying the operating state of the receiving device on the display unit based on the data indicating the state is provided.

  According to the remote control transmission device (1), when a state confirmation operation is performed by a user, the reception device is based on data indicating the operating state of the reception device stored in the storage means. Is displayed on the display unit, the user can grasp the operating state of the receiving device, for example, the state of the remotely controlled device, via the display unit of the transmitting device.

  The remote control transmission device (2) according to the present invention also includes a transmission device operated by a user and a reception device that receives an instruction signal from the transmission device and controls a device that is remotely controlled in accordance with the instruction signal. In a transmission device of a remote control system provided with a device, a display unit, storage control means for storing data indicating an operation state of the transmission device by a user in a storage means, and a status confirmation operation by a user are performed. Then, based on the data indicating the operation state of the transmission device stored in the storage unit, the transmission device state display control means for displaying the operation state of the transmission device on the display unit, and the reception device Based on the receiving means for receiving the transmitted data and the data received by the receiving means and indicating the operating state of the receiving apparatus transmitted from the receiving apparatus, the operating state of the receiving apparatus It is characterized in that it comprises a reception device state display control means for displaying to the display unit.

  According to the remote control transmission device (2), when a state confirmation operation is performed by a user, the transmission device is based on data indicating an operation state of the transmission device stored in the storage unit. Is displayed on the display section. The operating state of the receiving device is displayed on the display unit based on data indicating the operating state of the receiving device transmitted from the receiving device. Therefore, the user can grasp the operating state of the transmitting device and the operating state of the receiving device via the display unit.

  The remote control receiving device (3) according to the present invention also includes a transmission device operated by a user and a reception device that receives an instruction signal from the transmission device and controls a device that is remotely controlled in accordance with the instruction signal. In a receiving device of a remote control system comprising a device, when receiving a request signal for transmitting data indicating the operating state of the receiving device transmitted from the transmitting device, the operating state of the receiving device is indicated. It is characterized by having a transmission control means for transmitting the received data.

  According to the remote control receiving device (3), when the request signal transmitted from the transmitting device is received, data indicating the operating state of the receiving device is transmitted. Data can be obtained, and power consumption can be suppressed because the receiving device only has to transmit data only when necessary.

It is a block diagram which shows the structure of the keyless entry system which concerns on embodiment of this invention. (A) and (B) are front views showing examples of portable devices. It is sectional drawing which shows the structure of the light emission part of a portable device. It is a circuit diagram which shows the circuit structure of the light-receiving part of an optical signal. (A) (B) is a front view which shows the example of a display of LCD. It is a flowchart which shows the process which a microcomputer performs. It is a flowchart which shows the process which a microcomputer performs.

Next, an embodiment of the present invention will be described. FIG. 1 is a configuration diagram showing a configuration of a keyless entry system according to an embodiment of the present invention.
The keyless entry system includes a portable device 1 possessed by a user and an in-vehicle device 20 installed in an automobile. The transmission circuit 2 on the portable device 1 side is a circuit for transmitting instruction signals such as door lock, unlock, and trunk unlock from the antenna AT to the in-vehicle device 20, and is an oscillator (not shown) that outputs a carrier wave. ), A modulator (not shown) that modulates a carrier wave with instruction data from the microcomputer 9 and the like, and transmits an instruction signal to the in-vehicle device 20 side by radio waves. In the present embodiment, the transmission circuit 2 is configured to transmit the instruction signal by radio waves, but may be configured to transmit using infrared rays or the like.

  The light receiving unit 3 is a circuit that receives an optical transmission signal using visible light transmitted from the in-vehicle device 20 side, and is configured by a photoelectric element such as CdS, and receives the optical transmission signal from the in-vehicle device 20 to receive the microcomputer 9. Output to. The battery 4 supplies power to each circuit of the portable device 1, and a dry battery or a rechargeable battery such as Ni-Cd is used. The voltage detection circuit 5 is a circuit that detects the output voltage of the battery 4 and is constituted by a voltage comparator or the like. The detection result is output to the microcomputer 9.

  The LCD (Liquid Crystal Display) 6 displays various information using characters and pictures, and displays the operating state of the portable device 1, the operating state of the in-vehicle device 20, the operating mode, etc. according to the display signal from the microcomputer 9. To do. In addition, it can replace with LCD (liquid crystal display device) 6 and can also display the operation state of the portable device 1, the operation state of the vehicle equipment 20, an operation mode, etc. by LED (light emitting diode) by the light emission state. The LED 7 displays the operating state of the portable device 1, the operating state of the in-vehicle device 20, the operation mode, and the like depending on the light emission state. For example, the light emission intensity changes according to the remaining amount of the battery 4, the flashing interval, the flashing number Depending on the light emission state, the operating state of the portable device 1, the remaining capacity of the battery 4, the operating state of the in-vehicle device 20 and the operation mode are displayed. The operation switch 8 is a switch operated by the user in accordance with the content of the instruction, and is configured by a tact switch or the like. The EPROM 10 is a programmable ROM capable of electrically writing data, and an ID code for verifying that the portable device 1 and the in-vehicle device 20 are paired is written. And the microcomputer 9 receives the signal from each component of these portable devices 1, and performs operation control of these each component according to the received signal.

  As the portable device 1, for example, as shown in FIGS. 2A and 2B, a type without the LCD 6 (for example, a key holder type like (A)) and a type with the LCD 6 (for example, (B)) Both card types can be used. In the case of the key holder type portable device 1, various circuits are built in a case 31 having a slight thickness and made of resin. The case 31 is provided with push buttons 34 (lock buttons), 35 (unlock buttons), and 36 (trunk unlock buttons). In addition, an LED for operation monitoring that indicates that the push button 34, 35, 36 is operated to transmit an instruction signal to the vehicle-mounted device 20 and that it is lit and operated, and that the remaining capacity of the battery 4 is indicated by the brightness at the time of lighting (see FIG. (Not shown) hole 32 for emitting the emitted light to the outside of the case 31, the visible light signal from the vehicle-mounted device 20 is received by the light receiving unit 3, and the light emission of the LED 7 for indicating the operating state of the vehicle-mounted device 20 A hole 33 for emitting light to the outside of the case 31 is provided. The case 31 is provided with a hole 37 for attaching a chain 38, and is connected to the engine key 39 by the chain 38.

  In the case of the card type portable device 1, various circuits are configured and stored in a film-like flexible circuit board (not shown) inside a card-like case 41 made of resin. The case 41 is provided with push buttons 43 (lock buttons), 44 (unlock buttons), and 45 (trunk unlock buttons). The case 41 is lit and operated when the light receiving unit 3 receives a visible light signal from the in-vehicle device 20 and operates the push buttons 43, 44, and 45 to transmit an instruction signal to the in-vehicle device 20. In addition, a hole 46 is provided for emitting light emitted from an LED (not shown) for operation monitoring that informs the remaining capacity of the battery 4 by the brightness at the time of lighting. Further, the case 41 is provided with an LCD 42 (LCD 6) for displaying the operating state of the in-vehicle device 20 in characters.

  FIG. 3 is a cross-sectional view showing the structure near the hole 33 (46). The case 31 (41) is provided with a hole 33 (46), and an LED 56 and a photoelectric element (CdS) are provided below the hole 33 (46) in the printed circuit board 57 disposed in the case 31 (41). , Phototransistor etc.) 55 is mounted. Further, on the inner surface of the case 31 (41), a light-transmitting (transparent) rubber-like sheet member 54 (formed of an elastic resin is formed so that moisture or the like does not enter from a gap such as a joint of the case 31 (41). Are closely attached. The rubber-like sheet member 54 passes through the hole 33 (46) and exits from the surface of the case 31 (41), and the light emitted from the LED 56 exits the case 31 (41), and the light from the in-vehicle device 20 Is guided by the rubber-like sheet member 54 and received by the photoelectric element 55. Further, the rubber-like sheet member 54 and the photoelectric element 55 are in contact with each other, so that light scattering due to the boundary between the members is reduced and light from the in-vehicle device 20 is efficiently transmitted to the photoelectric element 55.

  A receiving circuit 21 on the in-vehicle device 20 side is a circuit that receives instruction signals such as door lock, unlock, and trunk unlock from the portable device 1 via the antenna AT, and is a tuning circuit that selectively tunes a carrier wave ( (Not shown), a detection circuit (not shown) for detecting the output signal of the tuning circuit, a decoding circuit (not shown) for decoding the detection output of the detection circuit, and the like, and outputting decoded data to the microcomputer 30 To do. In this embodiment, the receiving circuit 21 detects and decodes radio waves and receives an instruction signal. However, when the transmission medium is an optical signal such as infrared rays, the receiving circuit 21 receives and decodes the optical signal.

  The LED (light emitting diode) 22 displays the operating state of the vehicle-mounted device 20 and the operation mode of the anti-theft function depending on the light emission state. For example, the operation / non-operation of the keyless entry system and the operation / non-operation of the anti-theft function. Correspondingly, the emission intensity changes, the blinking interval and the number of blinks change, and the operating state and the like are displayed according to the emission state. Moreover, LED22 not only displays an operation state etc., but transmits data with visible light with respect to the portable device 1 by the blink. The LED 22 is installed on the surface of the case of the in-vehicle device 20 installed in the vehicle interior, or in the vicinity of the keyhole of the door or the door in the case where the portable device 1 can receive data outside the vehicle. . The operation switch 23 is used when the user sets the operation mode of the keyless entry system (whether or not to use the anti-theft function, the setting of doors and trunks subject to lock / unlock control, etc.) It is operated when a change is instructed, and it is installed in an inconspicuous place in the passenger compartment so that only the owner of the car can understand, and its operation method is also complicated.

  The theft sensor 24 detects the theft related to the vehicle, and detects the breakage of the window glass from the vibration of the window glass or the breakage of the key by the vibration or cutting of a detection electric wire provided inside the key. A sensor or a sensor that detects an operation other than the engine key of the ignition circuit of the engine by a change in voltage of each part in the ignition circuit or the like is used. The horn 25 is originally an automobile alarm. In the keyless entry system, the horn 25 is sounded for a certain period of time in order to notify the occurrence of the theft when the theft is detected. In the keyless entry system, the headlight 26 of the automobile is also controlled so as to blink for a certain period of time in order to notify the occurrence of the theft when the theft is detected.

  The door lock unit 27 locks and unlocks the door key, and the trunk lock unit 28 unlocks the trunk key and moves the key mechanism by an electromagnetic plunger or motor. It has become. The EPROM 29 is a programmable ROM capable of electrically writing data, and is written with an ID code for verifying that the portable device 1 and the in-vehicle device 20 are a pair. That is, the same ID code is written in the EPROMs 10 and 29 of the paired portable device 1 and the vehicle-mounted device 20, and when transmitting data, the data is transmitted with the ID code written in the EPROMs 10 and 29 added. When the data is received, the ID code included in the data is compared with the data written in the EPROMs 10 and 29, and when the data matches, the data is operated using the data. The microcomputer 30 receives a signal from each component of the in-vehicle device 20 and controls the operation of each component according to the received signal.

  FIG. 4 is a circuit diagram showing a circuit configuration of the light receiving unit 3. The emitter of the phototransistor PTR, which becomes conductive when exposed to visible light, is grounded, and the collector is connected to one end of the resistor R3. The other end of the resistor R3 is connected to the resistor R1 connected to the power supply output end of the microcomputer 9, the grounded capacitor C1, and the base of the PNP transistor TR1. The collector of the transistor TR1 is grounded, and the emitter is connected to a resistor R2 connected to the power supply output terminal of the microcomputer 9. The interrupt terminal of the microcomputer 9 is connected to the emitter of the transistor TR1, and the collector of the phototransistor PTR is connected to the input terminal of the microcomputer 9.

  Next, the operation of the light receiving unit 3 shown in FIG. 4 will be described. Normally, the microcomputer 9 does not supply power to the power output terminal, and the power line Vm is 0 V (L level). Therefore, in this state, the input of the microcomputer 9 is always at the L level, and no data is input to the microcomputer 9. When the operation switch 8 of the portable device 1 is operated, the microcomputer 9 supplies power to the power output terminal, the power line Vm is in a high voltage state (H level), and the interrupt terminal of the microcomputer 9 is also at H level. . In this state, when light having a predetermined intensity or more enters the phototransistor PTR, the phototransistor PTR is turned on, and the base potential of the transistor TR1 is lowered, so that the transistor TR1 is turned on. Therefore, the input voltage at the interrupt terminal of the microcomputer 9 changes from H level to L level.

  The microcomputer 9 performs an interrupt operation by changing the input voltage of the interrupt terminal from the H level to the L level when power is supplied to the power supply line, and then changes the input light of the phototransistor PTR to the collector of the phototransistor PTR. Detected by the change in potential and fetched as data. If the data input via the phototransistor PTR is interrupted for a certain time or more, the microcomputer 9 stops the power supply to the power supply output terminal, cancels the data input waiting state, and does not accept the initial input. Return. By such an operation, only when there is correct data input, it becomes possible to input data, and it is possible to eliminate a waiting state for input of useless data, reduce useless power consumption, and external light such as sunlight and illumination light. Can prevent erroneous input.

  Next, processing performed by the microcomputer 9 of the portable device 1 will be described. FIG. 6 is a flowchart showing processing performed by the microcomputer 9. This process is executed when any operation is performed by the operation switch 8.

  First, in step S1, it is determined whether or not the operation by the operation switch 8 is an operation for transmitting instruction data such as lock and unlock to the in-vehicle device 20, and if it is a transmission operation, the process proceeds to step S2, and if it is not a transmission operation. Control goes to step S6. In step S2, a signal corresponding to the content of the operation by the operation switch 8, that is, a lock instruction signal is transmitted to the in-vehicle device 20 if the lock button is operated, and an unlock instruction signal is transmitted to the in-vehicle device 20 if the unlock button is operated. The operation content, that is, the latest operation status, for example, the current operation status is stored as the content indicating that the door is unlocked, and the process proceeds to step S3.

  In step S6, it is determined whether the operation by the operation switch 8 is an operation for confirming the operation state of the keyless entry system. If the operation is a confirmation operation, the process proceeds to step S3, and if not, the process proceeds to step S7. Note that the confirmation operation is a predetermined specific operation of the operation switch 8 and is defined by, for example, simultaneous operation of the lock button and the unlock button. When the specific operation is performed, the confirmation operation is determined.

  In step S3, the operation state of the keyless entry system is displayed, and the process proceeds to step S4. The operation state of the keyless entry system includes the latest operation state of the portable device 1 stored in step S2 and the setting state of the in-vehicle device 20 received from the in-vehicle device 20 to be described later. This is notified by the display of, or the lighting or blinking state of the LED 7.

  In addition, as a display method according to the lighting and blinking state of the LED 7, for example, (1) a method of changing the number of blinking of the LED 7 according to the notification content, for example, blinking three times when the door is locked, blinking five times when the door is unlocked, etc. (2) A method of changing the number of times the LED 7 blinks within a predetermined time in accordance with the content of knowledge and repeating it, for example, blinking at 0.5 second intervals 3 times when the door is locked and 5 when the door is unlocked After that, the method of repeating the operation of turning off (turning off) until 5 seconds have elapsed from the start of blinking (or after completion of blinking), (3) LED 7 capable of emitting multiple colors (LEDs of different colors are integrated) To change the light emission color of the LED 7 in accordance with the notification content, for example, a method in which the door is lit in red for 3 seconds when the door is locked, and a green light for 3 seconds when the door is unlocked, or this How that displays a combination of flashing and luminous color is considered.

  Further, in the display by characters on the LCD 6, for example, as shown in FIG. 5A, the door is locked (DOOR: LOCKED (the door key is locked)), the anti-theft device (ALARM: ON) If detected, the alarm is activated. However, when the sensor is not in operation, only the threatening indication that the anti-theft device is operating is displayed.), The sensor operating state in the anti-theft device (SENSOR: ON (for theft detection) The sensor is operating)) is displayed.

  In step S4, it is determined whether or not a predetermined time has elapsed from the display of the operation state. If the predetermined time has elapsed, the process proceeds to step S5, and if not, the process returns to step S4. In step S5, the operation state of the keyless entry system being displayed is deleted, and the process proceeds to step S7.

  That is, according to the processing of step S1 to step S6, if a transmission operation is performed by the operation switch 8, an instruction signal corresponding to the operation content is transmitted, and the operation content is stored as the latest operation content. Become. For example, when a lock button is operated, a door lock instruction signal is transmitted, and the door lock is stored as the latest operation. Then, the latest stored operation content and the setting state of the in-vehicle device 20 received from the in-vehicle device 20 are displayed for a predetermined time thereafter, and the user can grasp the operation state of the keyless entry system. Further, since the display is limited to a predetermined time, power consumption can be suppressed. When a confirmation operation is performed with the operation switch 8, the operation state of the keyless entry system is displayed in the same manner, and the user can confirm the operation state as necessary.

  In step S7, the light receiving unit 3 is set in the receiving state, and the process proceeds to step S8. That is, as shown in FIG. 4, power is supplied to the light receiving unit 3 (the power output is set to H level). In step S8, it is determined whether or not data by visible light has been received. If data has been received, the process proceeds to step S9, and if not, the process proceeds to step S11. Whether or not data is received is determined based on whether or not an interrupt signal is input to the interrupt terminal of the microcomputer 9 and data is input to the input terminal after the interrupt as shown in FIG.

  In step S11, it is determined whether or not a state in which data is not input has continued for a predetermined time. If the predetermined time has elapsed, the process proceeds to step S12. If the predetermined time has not elapsed, the process returns to step S8. In step S12, the receiving state of the light receiving unit 3 is canceled, that is, the power supply to the light receiving unit 3 is stopped (the power output is set to L level) as shown in FIG.

  In step S9, it is determined whether or not data reception has been normally received. If normal, the process proceeds to step S13, and if abnormal, the process proceeds to step S10. This abnormality determination is based on general data transmission abnormality such as lack of data, and ID code matching depending on the type of data. For example, in the case of data on the operating state of the keyless entry system, data other than the in-vehicle device 20 corresponding to the portable device 1 is erroneously displayed. In addition, in the case of ID code writing (ID code setting of a new portable device) to be described later, ID code matching is not added to the normal judgment condition.

In step S10, it is displayed that the reception is abnormal, and the process proceeds to step S12. This display is performed by turning on or blinking characters on the LCD 6 or the LED 7.
That is, according to the processing of step S7 to step S12, if the operation switch 8 is operated, the data can be received by visible light only for a predetermined time. If no data is received within the predetermined time, the reception state is canceled Is done. If reception is not completed normally, an abnormal state is displayed and the reception state is released. Therefore, an unnecessary reception standby state can be eliminated and power consumption can be suppressed. Further, since the abnormality of the received data can be grasped, the data transmission can be performed again smoothly if necessary. Further, it is possible to prevent erroneous detection of data or the like for other keyless entry systems.

  In step S13, it is determined whether or not the received data is an ID code write (rewrite) instruction. If it is an ID code write instruction, the process proceeds to step S15. If not, the process proceeds to step S14. In step S14, the received data is stored and, if necessary, the received data is displayed for a certain period of time using characters on the LCD 6 or by turning on / flashing the LED 7, and the process is terminated.

  In step S15, it is determined whether or not the ID code can be written. If possible, the process proceeds to step S16, and if not possible, the process proceeds to step S17. This determination is made based on whether or not an ID code is written by the operation switch 8 within a predetermined time. The ID code can be written only within a predetermined time after the writing operation is performed by the operation switch 8. It becomes. The writing operation by the operation switch 8 is a combination of a plurality of button operations (operation order, for example), for example, a simultaneous operation of a door lock button, an unlock button, a trunk lock button, or an operation of these buttons in a predetermined order. It is preferable to set a relatively complicated operation. By the process of step S15, the unexpected writing of the ID code, for example, the unexpected writing of the ID code by a signal from another keyless entry system, or the unexpected writing of the ID code due to an erroneous operation of the operation switch 8 can be prevented.

  In step S16, ID code writing processing such as ID code writing, ID code writing completion display (characters on LCD 6 or LED 7 is lit or blinking), and ID code writing completion data is transmitted to in-vehicle device 20 is performed. And finish the process. In step S17, the ID code is not written, the ID code cannot be written (characters on the LCD 6 or the LED 7 is lit or blinking), the ID code cannot be written to the in-vehicle device 20, and the like. The process that cannot be included is performed, and the process ends.

  By the processing of step S13 to step S17, the contents of the received data are displayed for a predetermined time, the state of the keyless entry system can be grasped, and the display time is limited, so that the power consumption can be suppressed. . In addition, the ID code can be easily written, and the success or failure of the writing is displayed, so that redoing at the time of writing failure can be performed smoothly.

  Next, processing performed by the microcomputer 30 of the in-vehicle device 20 will be described. FIG. 7 is a flowchart showing processing performed by the microcomputer 30. This process is repeatedly executed during the operation of the in-vehicle device 20 (a state in which the in-vehicle device 20 is connected to the battery of the automobile).

  First, in step P1, it is determined whether or not an ID code transmission operation has been performed by the operation switch 23. If there is an operation, the process proceeds to step P2. The ID code transmission operation is an operation for writing the ID code, for example, an operation for newly pairing the portable device 1 and the vehicle-mounted device 20 when the portable device 1 is lost. It is preferable to set a relatively complicated operation, such as simultaneous operation of a plurality of buttons in FIG.

  In step P2, the ID code is updated to a code other than the code used so far, the code is transmitted by visible light using the LED 22, and the process proceeds to step P3. As for the ID code, there are a method in which a plurality of codes are written in the EPROM 29, and when the writing process is performed, the written codes are sequentially used as an ID code, or a method of setting the ID code by a random number. In step P3, the success / failure of ID code writing is determined from a signal indicating whether or not the ID code has been successfully written from the portable device 1. If successful, the process ends. If unsuccessful, the process proceeds to step P4. In step P4, the ID code updated in step P2 is returned to the code before update, and the process is completed.

  Through the processes of Step P2 to Step P4, the updated new code is transmitted as a code to be written, and a new ID code can be set in the portable device 1. Further, since the ID code and the code used before are changed, it becomes impossible to operate the portable device 1 that has been lost before, so it is possible to prevent a reduction in the anti-theft function against theft of the portable device 1 or the like. . In addition, when the ID code is not successfully written on the portable device 1 side, the state returns to the original state before the ID code writing operation. Operation can be performed smoothly.

  In Step P5, it is determined whether or not a status request signal from the portable device 1, that is, a signal requesting data on the operating state of the keyless entry system is received. If received, the process proceeds to Step P6. Move on. In Step P6, the operation state data of the keyless entry system is transmitted by visible light using the LED 22, and the process is finished.

  If there is a state request signal from the portable device 1 by the processing of these step P5 to step P6, the operation state data of the keyless entry system is transmitted to the portable device 1 using the LED 22, so that the portable device 1 performs the keyless entry. It becomes possible to grasp the operating status of the system.

  In Step P7, it is determined whether or not an instruction signal from the portable device 1, that is, an instruction signal for instructing to lock or unlock the door is received. If received, the process proceeds to Step P8, and if not received, the process ends. . In Step P8, the door or trunk lock state and the arm state (operation / non-operation state) of the antitheft device are changed according to the received instruction signal, and the data of the operation state of the keyless entry system after the change is indicated by LED22. The state change process that says that it transmits by using visible light is performed, and a process is complete | finished.

  If there is an instruction signal from the portable device 1 by the processing of Step P7 to Step P8, the operation state of the keyless entry system changes according to the received instruction signal, such as the door being locked, and the keyless entry system. Since the data is transmitted to the portable device 1 using the LED 22 when the operation state is changed, the portable device 1 can grasp the changed operation state of the keyless entry system.

DESCRIPTION OF SYMBOLS 1 ... Portable machine 2 ... Transmission circuit 3 ... Light-receiving part 6 ... LCD (liquid crystal display device)
8 ... Operation switch 9, 30 ... Microcomputer 21 ... Receiving circuit 22 ... LED

Claims (3)

In a transmission device of a remote control system comprising: a transmission device operated by a user; and a reception device that receives an instruction signal from the transmission device and controls a device that is remotely controlled according to the instruction signal.
A display unit;
Receiving means for receiving data transmitted from the receiving device;
Storage control means for storing, in the storage means, data indicating the operating state of the receiving apparatus transmitted from the receiving apparatus, received by the receiving means;
Receiving device state for displaying the operating state of the receiving device on the display unit based on the data indicating the operating state of the receiving device stored in the storage means when the user performs a state confirmation operation A remote control transmission apparatus comprising: a display control means. In a transmission device of a remote control system comprising: a transmission device operated by a user; and a reception device that receives an instruction signal from the transmission device and controls a device that is remotely controlled according to the instruction signal.
A display unit;
Storage control means for storing data indicating an operation state of the transmission device by a user in a storage means;
A transmission device state that displays an operation state of the transmission device on the display unit based on data indicating an operation state of the transmission device stored in the storage means when a state confirmation operation is performed by a user Display control means;
Receiving means for receiving data transmitted from the receiving device;
Receiving device state display control means for displaying the operating state of the receiving device on the display unit based on the data received from the receiving device and indicating the operating state of the receiving device transmitted from the receiving device; A transmission device for remote control, comprising: In a receiving device of a remote control system, comprising: a transmitting device operated by a user; and a receiving device that receives an instruction signal from the transmitting device and controls a device that is remotely controlled according to the instruction signal;
When receiving a request signal for requesting transmission of data indicating the operating state of the receiving device transmitted from the transmitting device,
A remote control receiver comprising transmission control means for transmitting data indicating an operating state of the receiver.

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