JP2012066657A - Starter system of in-vehicle equipment, and starting method of in-vehicle equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a starter system of in-vehicle equipment, and a starting method of the in-vehicle equipment which reduce standby energy of the in-vehicle equipment, and prevent a time period since an ACC of the vehicle is turned on until the in-vehicle equipment gets enabled from being prolonged.SOLUTION: While power supply to a navigation unit 4 is stopped when the ACC of the vehicle 2 is turned off, the power supply to the navigation unit 4 starts, and a CPU 61 of the navigation unit 4 reads out an OS program 46 from a data recording part 32 (S13), and the OS program 46 which has been read out is expanded to an RAM 62 (S14) when it is detected that a front door 11 of the driver's seat opens in a state that the ACC of the vehicle 2 is turned off. Afterward, the OS program 46 expended to the RAM 62 is executed (S16) when the ACC of the vehicle 2 is turned on.

Description

  The present invention relates to an on-vehicle device activation system and an on-vehicle device activation method related to activation of an on-vehicle device mounted on a vehicle.

  2. Description of the Related Art In recent years, a navigation device is often mounted on a vehicle that provides vehicle travel guidance so that a driver can easily arrive at a desired destination. Here, the navigation device detects the current position of the vehicle with a GPS receiver or the like, acquires map data corresponding to the current position from a recording medium such as a DVD-ROM or HDD, and displays it on a liquid crystal monitor. It is a possible device. In addition to the navigation device, the vehicle is equipped with a plurality of vehicle-mounted devices such as an audio player and an ETC vehicle-mounted device.

  Here, electric power for driving the vehicle-mounted device is supplied from a battery mounted on the vehicle. In addition, when a CPU (Central Processing Unit) mounted on the vehicle-mounted device executes various programs including an operation system (hereinafter referred to as OS) and applications, program storage such as media such as CD and DVD, memory, and hard disk. This is realized by reading out the corresponding program from the medium and expanding it in the work memory, and then executing the program expanded in the work memory. And conventionally, even in a state where the ACC of the vehicle is turned off (that is, a state where the power of the vehicle-mounted device is turned off), in order to save the storage contents of the work memory, a certain amount from the battery to the vehicle-mounted device The power supply is continuously supplied, that is, the standby power is generated.

  Therefore, in order to reduce the standby power of the vehicle-mounted device, it can be considered that power is not supplied from the battery to the vehicle-mounted device when the ACC of the vehicle is off. However, if the vehicle ACC is turned off and power is not supplied from the battery to the vehicle-mounted device, the information stored in the work memory is erased when the vehicle ACC is turned off. Therefore, when the vehicle ACC is turned on next time, it is necessary to read the program from the program storage medium, and there is a problem that the start-up time of the vehicle-mounted device (that is, the time for performing the start-up process (boot process)) becomes long. .

  Therefore, as one means for shortening the time from when the vehicle ACC is turned on until the vehicle-mounted device becomes usable, Japanese Patent Laid-Open No. 7-134041, for example, discloses that the vehicle door is unlocked. Describes a technique for starting activation of the navigation device at the time.

Japanese Patent Laid-Open No. 7-134041 (pages 5 to 6, FIG. 1)

  However, when the vehicle-mounted device is activated when the vehicle door is unlocked as in the above-mentioned Patent Document 1, when the door is unlocked without starting operation (for example, the rear part of the vehicle). Even when the door is unlocked to remove the luggage placed on the seat or trunk, the vehicle-mounted device is erroneously activated. Therefore, even if the standby power of the vehicle-mounted device is reduced, the total battery power consumption may be increased.

  The present invention has been made to solve the above-described conventional problems, and it is possible to reduce the power consumption of the vehicle-mounted device in a state where the ACC is turned off, and after the ACC of the vehicle is turned on. An object of the present invention is to provide a vehicle-mounted device activation system and a vehicle-mounted device activation method that can prevent the time until the vehicle-mounted device becomes usable.

In order to achieve the object, the vehicle-mounted device activation system (1) according to claim 1 of the present application is mounted on the vehicle from the battery (5) mounted on the vehicle when the ACC of the vehicle (2) is turned off. The power supply stopping means (15) for stopping the supply of power to the mounted vehicle-mounted device (4) and the vehicle ACC is in an off state, and the vehicle is expected to start driving after a predetermined time has elapsed. A state transition detection means (16) for detecting that the vehicle has shifted to the driving preparation state, and when the state transition detection means detects that the vehicle has shifted to the driving preparation state, Power supply start means (17) for starting supply of power, and the vehicle-mounted device includes a work memory (62), a program storage medium (32) in which a program is stored, and the power supply start means. Above When the supply of power to the on-board device is started, when the program expansion means (51) for reading the program from the program storage medium and expanding the program to the work memory and the ACC of the vehicle are turned on And program execution means (52) for executing the program expanded by the program expansion means.
The “program storage medium” includes a CD, a DVD, a hard disk drive, a flexible disk, a flash memory, and the like.

  Moreover, the onboard equipment starting system which concerns on Claim 2 is the onboard equipment starting system (1) of Claim 1, Comprising: Door opening and closing which detects opening and closing of the door (11) of the driver's seat of the said vehicle (2) The state transition detection unit (16) includes a detection unit (18), and when the door opening / closing detection unit detects that the door of the driver's seat of the vehicle is opened, the vehicle enters the driving preparation state. It is characterized by detecting that it has migrated.

  Moreover, the onboard equipment starting system which concerns on Claim 3 is the onboard equipment starting system (1) of Claim 1 or Claim 2, Comprising: The said onboard equipment (4) is the said electric power supply stop means (15). When the supply of power to the vehicle-mounted device is stopped by the storage device, the storage unit (53) that stores the state of the register included in the vehicle-mounted device to another storage medium (64, 32), and the power supply start unit And reading means (54) for reading the state of the register stored in the other storage medium when the supply of power to the vehicle-mounted device is started.

  Moreover, the onboard equipment starting system which concerns on Claim 4 is the onboard equipment starting system (1) in any one of Claim 1 thru | or 3, Comprising: The said program expansion | deployment means (51) starts the said electric power supply When supply of power to the vehicle-mounted device (4) is started by the means (17), the operating system program (46) is read from the program storage medium (32), and the operating system program is read from the work memory (62). ).

  Furthermore, the start-up method of the onboard equipment which concerns on Claim 5 is the onboard equipment (4) mounted in the said vehicle from the battery (5) mounted in the said vehicle, when ACC of the said vehicle (2) is turned off. A power supply stop step for stopping the supply of power to the vehicle, and that the ACC of the vehicle is in an off state, and that the vehicle has shifted to a driving preparation state that is predicted to start driving after a predetermined time has elapsed. A state transition detection step to detect, a power supply start step to start power supply to the vehicle-mounted device when it is detected by the state transition detection step that the vehicle has transitioned to the driving preparation state; When the power supply to the on-vehicle device is started by the power supply start step, the program is downloaded from the program storage medium (32) in which the program is stored in the on-vehicle device. A program expansion step of expanding the program into the work memory (62), and executing the program expanded by the program expansion step in the vehicle-mounted device when the ACC of the vehicle is turned on And a step.

  In the vehicle-mounted device activation system according to claim 1 having the above-described configuration, since the power supply from the battery to the vehicle-mounted device mounted on the vehicle is stopped in a state where the ACC of the vehicle is turned off, the standby power of the vehicle-mounted device is reduced. A configuration that does not occur can be achieved. In addition, since the start-up process of the vehicle-mounted device is started before the vehicle ACC is turned on, it is possible to prevent a long time from when the vehicle ACC is turned on until the vehicle-mounted device becomes usable. It becomes possible. Furthermore, the start-up process of the vehicle-mounted device is started when it is detected that the vehicle has shifted to a driving preparation state that is predicted to start driving after a predetermined time has elapsed. It becomes possible to reduce the chance of being activated accidentally. Furthermore, since the program developed in the work memory is executed after the ACC of the vehicle is turned on, the power consumption based on the activation of the on-vehicle device can be reduced even when the on-vehicle device is erroneously activated. It becomes possible.

  In addition, in the vehicle-mounted device activation system according to claim 2, when it is detected that the door of the driver's seat of the vehicle is opened, the vehicle shifts to a driving preparation state that is predicted to start driving after a predetermined time has elapsed. This is detected and the start-up process of the vehicle-mounted device is started, so that it is possible to reduce the chance that the vehicle-mounted device is erroneously started compared to the conventional case.

  Further, in the vehicle-mounted device activation system according to claim 3, when the ACC of the vehicle is turned off, the register state is previously saved in another storage medium such as a nonvolatile memory, and then the ACC of the vehicle is turned on. Since the state of the register saved in step S3 is read from the storage medium, when the ACC of the vehicle is turned on, it is possible to take over the state of the register from the state when the ACC was previously turned off.

  In addition, in the onboard device activation system according to claim 4, since the time-consuming OS program deployment and execution processing is applied, it takes a long time from when the vehicle ACC is turned on until the onboard device can be used. It becomes possible to prevent more effectively.

  Furthermore, in the onboard device activation method according to claim 5, since the supply of power from the battery to the onboard device mounted on the vehicle is stopped in a state where the ACC of the vehicle is turned off, standby power of the onboard device is generated. It becomes possible to set it as the structure which is not. In addition, since the start-up process of the vehicle-mounted device is started before the vehicle ACC is turned on, it is possible to prevent a long time from when the vehicle ACC is turned on until the vehicle-mounted device becomes usable. It becomes possible. Furthermore, the start-up process of the vehicle-mounted device is started when it is detected that the vehicle has shifted to a driving preparation state that is predicted to start driving after a predetermined time has elapsed. It becomes possible to reduce the chance of being activated accidentally. Furthermore, since the program developed in the work memory is executed after the ACC of the vehicle is turned on, the power consumption based on the activation of the on-vehicle device can be reduced even when the on-vehicle device is erroneously activated. It becomes possible.

It is a schematic block diagram of the onboard equipment starting system which concerns on this embodiment. It is a block diagram which shows typically the control system of the onboard equipment starting system which concerns on this embodiment. It is the figure which showed the structure of vehicle control ECU. It is the block diagram which showed the navigation apparatus which concerns on this embodiment. It is the figure which showed the structure of navigation ECU. It is a flowchart of the power management control program which concerns on this embodiment. It is a flowchart of the starting process program which concerns on this embodiment.

  Hereinafter, based on one embodiment which materialized OBE starting system 1 concerning the present invention, it explains in detail, referring to drawings. First, a schematic configuration of the vehicle-mounted device activation system 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram of an in-vehicle device activation system 1 according to the present embodiment, and FIG. 2 is a block diagram schematically showing a control system of the in-vehicle device activation system 1 according to the present embodiment.

As shown in FIG.1 and FIG.2, the onboard equipment starting system 1 which concerns on this embodiment is vehicle control ECU3 installed with respect to the vehicle 2, the navigation apparatus 4, the battery 5, and the battery supply switching apparatus 6, It basically consists of
The vehicle 2 is a four-door type vehicle, and includes a front door 11 on the driver's seat side, a front door 12 on the passenger seat side, and back doors 13 and 14 on the left and right of the rear seat.

Here, the vehicle control ECU (Electronic Control Unit) 3 stops the supply of power from the battery 5 to the navigation device 4 as the vehicle-mounted device when the ACC of the vehicle 2 is turned off as shown in FIG. Power supply stop means 15 for performing state transition detection means 16 for detecting that the ACC of the vehicle 2 is in an OFF state and the vehicle 2 has transitioned to a driving preparation state that is predicted to start driving after a lapse of a predetermined time. When the state transition detection unit 16 detects that the vehicle 2 has transitioned to the driving preparation state, the power supply start unit 17 that starts supplying power to the navigation device 4 and the opening / closing of the front door 11 of the vehicle 2 This is an electronic control unit that constitutes the door opening / closing detection means 18 to be detected and the like and controls the entire vehicle 2. In addition to the battery supply switching device 6, the vehicle control ECU 3 includes an ACC switch 19 that is an operation means for switching on / off of the ACC of the vehicle 2, and door opening / closing detection for detecting opening / closing of the front door 11. A sensor 20 is connected. Further, the vehicle control ECU 3 is also connected to a later-described navigation ECU 33 included in the navigation device 4. In addition to the CPU 21 as the arithmetic device and the control device, the RAM 22 used as a work memory when the CPU 21 performs various arithmetic processes, a control program, a power management control program (see FIG. 6) described later, and the like are recorded. ROM 23, and an internal storage device such as a flash memory 24 for storing a program read from ROM 23.
The vehicle control ECU 3 controls the battery supply switching device 6 based on signals input from the ACC switch 19 and the door opening / closing detection sensor 20 as will be described later, and supplies power from the battery 5 to the navigation device 4. Take control. Details of control of power supply to the navigation device 4 will be described later.

  The navigation device 4 is provided on the center console or panel surface of the vehicle 2 and includes a liquid crystal display that displays a map and a search route to the destination, a speaker that outputs voice guidance related to route guidance, and the like. Then, the current position of the vehicle 2 is specified by GPS or the like, and when the destination is set, the route to the destination is searched and guidance according to the set route is performed using a liquid crystal display or a speaker. . In addition, the navigation device 4 according to the present embodiment is configured so that power supply from the battery 5 is stopped and standby power is not generated when the ACC of the vehicle 2 is turned off, as will be described later. When a predetermined condition is satisfied, a part of the startup process (boot process) is performed before the ACC of the vehicle 2 is turned on. The detailed configuration of the navigation device 4 will be described later.

  The battery 5 is a secondary battery as a power storage means capable of repeating charging and discharging, and a lead storage battery, a capacitor, a nickel cadmium battery, a nickel hydrogen battery, a lithium ion battery, a sodium sulfur battery, or the like is used. The battery 5 supplies power to various vehicle-mounted devices including the navigation device 4 mounted on the vehicle 2.

  The battery supply switching device 6 is connected to the vehicle control ECU 3, and is means for switching presence / absence of power supply from the battery 5 to the navigation device 4 based on a control signal transmitted from the vehicle control ECU 3.

Next, the configuration of the navigation device 4 will be described with reference to FIG.
As shown in FIG. 3, the navigation device 4 according to the present embodiment is based on a current position detection unit 31 that detects the current position of the vehicle 2, a data recording unit 32 that records various data, and input information. The navigation ECU 33 that performs various arithmetic processes, the operation unit 34 that receives operations from the user, the liquid crystal display 35 that displays a guide route to a map and a destination for the user, and voice guidance related to route guidance are output. And a communication module 38 that performs communication with an information center such as a probe center or a VICS center.

Below, each component which comprises the navigation apparatus 4 is demonstrated in order.
The current position detection unit 31 includes a GPS 41, a vehicle speed sensor 42, a steering sensor 43, a gyro sensor 44, and the like, and can detect the current vehicle position, direction, vehicle traveling speed, current time, and the like. . Here, in particular, the vehicle speed sensor 42 is a sensor for detecting the moving distance and the vehicle speed of the vehicle 2, generates a pulse according to the rotation of the driving wheel of the vehicle 2, and outputs the pulse signal to the navigation ECU 33. And navigation ECU33 calculates the rotational speed and moving distance of a driving wheel by counting the pulse which generate | occur | produces. Note that the navigation device 4 does not have to include all of the above five types of sensors, and the navigation device 4 may include only one or more of these types of sensors.

  The data recording unit 32 includes an external storage device and a hard disk (not shown) as a recording medium, a map information DB 45 recorded on the hard disk, an OS program 46, and various application programs (for example, a vehicle location specifying processing program, A recording head (not shown), which is a driver for reading out 47 and the like (map display program, communication processing program, etc.) and writing predetermined data into the hard disk. The data recording unit 32 may be configured by a memory card, an optical disk such as a DVD or a CD, instead of the hard disk.

  On the other hand, the navigation ECU (Electronic Control Unit) 33 reads a program from the data recording unit 32 when the supply of power to the navigation device 4 is started as shown in FIG. When the program development means 51 to be deployed and the ACC of the vehicle 2 are turned on, when the supply of power to the program execution means 52 that executes the program developed by the program development means 51 and the navigation device 4 is stopped, A storage unit 53 that stores the state of the register included in the navigation device 4 in another storage medium, and a reading unit that reads out the state of the register stored in the storage medium when power supply to the navigation device 4 is started. 54 and the like, and the entire navigation device 4 is controlled. It is a child control unit. The CPU 61 as the arithmetic device and the control device, the RAM 61 that is used as a work memory when the CPU 61 performs various arithmetic processes, stores the route data when the route is searched, and the control program. In addition, an internal storage device such as a later-described activation processing program (see FIG. 7), a ROM 63 in which the activation order of the programs during the activation processing, and the flash memory 64 that stores programs read from the ROM 63 are stored.

  The operation unit 34 is operated when inputting a departure point as a travel start point and a destination point as a travel end point, and includes a plurality of operation switches (not shown) such as various keys and buttons. Then, the navigation ECU 33 performs control to execute various corresponding operations based on switch signals output by pressing the switches. The touch panel provided on the front surface of the liquid crystal display 35 may be used.

  Further, the liquid crystal display 35 includes a map image including a road, traffic information, operation guidance, operation menu, key guidance, a planned travel route from the departure point to the destination, guidance information along the planned travel route, news, weather, and the like. Forecast, time, mail, TV program, etc. are displayed.

  Further, the speaker 36 outputs voice guidance for guiding traveling along the planned traveling route and traffic information guidance based on an instruction from the navigation ECU 33.

  The DVD drive 37 is a drive that can read data recorded on a recording medium such as a DVD or a CD. Based on the read data, music and video are reproduced, the map information DB 45 is updated, and the like.

  The communication module 38 is a traffic information including traffic information, regulation information, traffic accident information, etc. transmitted from a traffic information center such as a VICS (registered trademark: Vehicle Information and Communication System) center or a probe center. For example, a mobile phone or DCM.

  Next, a power management control program executed by the vehicle control ECU 3 in the vehicle-mounted device activation system 1 having the above configuration will be described with reference to FIG. FIG. 6 is a flowchart of the power management control program according to this embodiment. Here, the power management control program is a program that is repeatedly executed at predetermined intervals, and controls the power supply from the battery 5 to the navigation device 4 based on the ACC state of the vehicle and the open / closed state of the front door 11. The program shown in the flowchart of FIG. 6 below is stored in the RAM 22 or ROM 23 provided in the vehicle control ECU 3 and is executed by the CPU 21.

  First, in step (hereinafter abbreviated as S) 1, the CPU 21 determines whether or not the ACC of the vehicle 2 is in an on state. Note that the ACC state of the vehicle 2 is changed based on the operation of the ACC switch 19 by the user.

  If it is determined that the ACC of the vehicle 2 is in the on state (S1: YES), the process proceeds to S2. On the other hand, when it is determined that the ACC of the vehicle 2 is in the off state (S1: NO), the process proceeds to S2.

  In S <b> 2, the CPU 21 determines whether the ACC of the vehicle 2 has been switched from on to off based on the operation signal transmitted from the ACC switch 19.

  When it is determined that the ACC of the vehicle 2 has been switched from on to off (S2: YES), the process proceeds to S3. On the other hand, when it is determined that the ACC of the vehicle 2 is continuously on (S2: NO), the power management control program is performed without controlling the power supply from the battery 5 to the navigation device 4. Exit.

  In S <b> 3, the CPU 21 transmits a control signal to the battery supply switching device 6 and stops power supply from the battery 5 to the navigation device 4. As a result, the navigation apparatus 4 is turned off and no standby power is generated. In addition, when the power supply to the navigation device 4 is stopped, the data stored in the RAM 62 or the register which is the work memory of the navigation device 4 is erased. Thereafter, the power management control program is terminated.

  In S <b> 4, the CPU 21 determines whether or not the front door 11 that is the door of the driver's seat of the vehicle 2 has been opened based on the detection signal transmitted from the door opening / closing detection sensor 20. Here, when the front door 11 that is the door of the driver's seat of the vehicle 2 is opened while the ACC of the vehicle 2 is off, the driver enters the driver's seat after that and is expected to start driving after a predetermined time. The Therefore, in S4, it is determined whether or not the vehicle 2 has shifted to a driving preparation state that is predicted to start driving after a predetermined time has elapsed.

  And when it determines with the front door 11 which is the door of the driver's seat of the vehicle 2 having opened (S4: YES), that is, it transfers to the driving preparation state estimated that the vehicle 2 will drive | operate after predetermined time progress. If it is determined that the process has been performed, the process proceeds to S5. On the other hand, when it is determined that the front door 11 which is the door of the driver's seat of the vehicle 2 is continuously closed (S4: NO), that is, the vehicle 2 is started to drive after a predetermined time has elapsed. If it is determined that the state has not shifted to the predicted driving preparation state, the power management control program is terminated without controlling the power supply from the battery 5 to the navigation device 4.

  In S <b> 5, the CPU 21 transmits a control signal to the battery supply switching device 6 and starts supplying power from the battery 5 to the navigation device 4. In addition, the navigation device 4 executes a startup process program (FIG. 7), which will be described later, in response to the power supply being stopped, and starts a startup process (boot process) of the navigation device 4. Thereafter, the power management control program is terminated.

  Next, an activation processing program executed by the navigation device 4 will be described with reference to FIG. FIG. 7 is a flowchart of the activation processing program according to the present embodiment. Here, the activation processing program is when power supply from the battery 5 to the navigation device 4 is started, that is, when the front door 11 that is the driver's seat door of the vehicle 2 is opened while the ACC of the vehicle 2 is off. And a program for executing a startup process (boot process) of the navigation device 4. Note that the program shown in the flowchart of FIG. 7 below is stored in the ROM 63 provided in the navigation device 4 and is executed by the CPU 61.

  First, in S <b> 11, the CPU 61 reads the activation order data stored in the ROM 63. The activation order data is data defining the activation order of each program when the navigation device 4 is activated.

  Next, in S12, the CPU 61 reads the state of the register saved (saved) in the flash memory 24 or the data recording unit 32 when the ACC was turned off (S19). Thereby, it is possible to take over the register state from the state at the time of the previous ACC OFF. Note that the register is a storage element provided in the CPU 61 and used for operation and holding of the execution state.

  Subsequently, in S13, the CPU 61 accesses the data recording unit 32 via the system bus, and among the programs stored in the data recording unit 32, the program associated with the highest activation order in the activation order table. The OS program 46 is read out. If the data recording unit 32 is an HDD, the process of starting the HDD in S13 is also performed.

  In S14, the CPU 61 develops the OS program 46 read from the data recording unit 32 via the system bus in the RAM 62, which is a work memory.

  Next, in S15, the CPU 61 determines whether or not the ACC of the vehicle 2 has been switched from OFF to ON. Note that the current ACC state of the vehicle 2 is specified based on information transmitted from the vehicle control ECU 3.

  And when it determines with the ACC of the vehicle 2 having been switched from OFF to ON (S15: YES), it transfers to S16. On the other hand, when it is determined that the ACC of the vehicle 2 is continuously off (S15: NO), the process waits until the ACC of the vehicle 2 is turned on.

  In S16, the CPU 61 turns on the power of the navigation device 4 and starts executing the OS program 46 developed in the RAM 62 (S16). As a result, the OS is started in the navigation device 4, and another application program can be executed.

  Thereafter, in S17, the CPU 61 accesses the data recording unit 32 via the system bus, and among the programs stored in the data recording unit 32, the application program 47 (for example, own vehicle position) having a high activation order according to the activation order data. A specific processing program, a map display program, a communication processing program, etc.) are developed in order on the RAM 62 as a work memory and executed. Thus, the startup process of the navigation device 4 is completed. In the startup process of the navigation device 4 described above, before the ACC of the vehicle 2 is turned on, a part of the startup process (power supply to the navigation device 4, reading of the OS program 46 from the data recording unit 32, OS Since the program 46 is expanded to the RAM 62), it is possible to prevent a long time from when the ACC of the vehicle 2 is turned on until the navigation device 4 becomes usable.

  Next, in S18, the CPU 61 determines whether or not the ACC of the vehicle 2 has been switched from on to off.

  When it is determined that the ACC of the vehicle 2 has been switched from on to off (S18: YES), the process proceeds to S19. On the other hand, when it is determined that the ACC of the vehicle 2 is on (S18: NO), various processes such as map display and route guidance are continuously executed.

  In S <b> 19, the CPU 61 saves (saves) the current register state in the flash memory 24 and the data recording unit 32. Thereafter, the power of the navigation device 4 is turned off. As described above, when the ACC of the vehicle 2 is turned off, the vehicle control ECU 3 stops the power supply to the navigation device 4 (S3), so that the information stored in the RAM 62 and the register is deleted. Become. However, the state of the register can be restored by reading from the flash memory 24 or the data recording unit 32 that stores the state of the register in S19 when the ACC of the vehicle 2 is turned on next time (S12).

As described above in detail, in the vehicle-mounted device activation system 1 and the vehicle-mounted device activation method according to the present embodiment, power supply to the navigation device 4 is stopped when the ACC of the vehicle 2 is turned off (S3), When it is detected that the front door 11 of the driver's seat is opened while the ACC of the vehicle 2 is off, the power supply to the navigation device 4 is started (S5), and the CPU 61 of the navigation device 4 displays the data recording unit. The OS program 46 is read from 32 (S13), and the read OS program 46 is expanded in the RAM 62 (S14). Thereafter, when the ACC of the vehicle 2 is turned on, the OS program 46 developed in the RAM 62 is executed (S16), so that the standby power of the navigation device 4 can be prevented from being generated. Since the start-up process of the navigation device 4 is started before the ACC of the vehicle is turned on, it is possible to prevent a long time from when the ACC of the vehicle 2 is turned on until the navigation device 4 becomes usable. It becomes possible. Furthermore, the start-up process of the navigation device 4 is started when it is detected that the vehicle 2 has shifted to a driving preparation state that is predicted to start driving after a predetermined time has elapsed. It is possible to reduce the chance that the device 4 is erroneously activated. Furthermore, since the OS program 46 developed in the RAM 62 is executed after the ACC of the vehicle 2 is turned on, power consumption based on the activation of the navigation device 4 can be reduced even when the navigation device 4 is erroneously activated. It becomes possible to decrease.
Further, when it is detected that the front door 11 of the driver's seat of the vehicle 2 is opened, the navigation device detects that the vehicle 2 has shifted to a driving preparation state that is predicted to start driving after a lapse of a predetermined time. 4 is started, it is possible to reduce the chance that the navigation device 4 is erroneously activated compared to the conventional case.
Further, when the ACC of the vehicle 2 is turned off, the state of the register is saved in advance to another storage medium such as the data recording unit 32 and the flash memory 64, and then saved when the ACC of the vehicle 2 is turned on. Since the state of the register is read from the storage medium, when the ACC of the vehicle 2 is turned on, it is possible to take over the state of the register from the state at the time of the previous ACC off.
In addition, since the time-consuming OS program deployment and execution process is applied, it is more effectively prevented that the time from when the ACC of the vehicle 2 is turned on until the vehicle-mounted device becomes usable becomes longer. It becomes possible to do.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in this embodiment, when it is detected that the front door 11 of the driver's seat of the vehicle 2 is opened, it is detected that the vehicle 2 has shifted to a driving preparation state that is predicted to start driving after a predetermined time has elapsed. However, it is configured to start the activation process of the navigation device 4, and when other conditions are satisfied, it is detected that the vehicle 2 has shifted to a driving preparation state that is predicted to start driving after a predetermined time has elapsed. Also good. For example, the condition may be that the driver is seated on the driver's seat or the door is unlocked.

  In the present embodiment, the navigation device 4 has been described as an example of the vehicle-mounted device, but the present invention can also be applied to other vehicle-mounted devices. For example, an audio player, an ETC in-vehicle device, or the like may be used.

1 On-vehicle device activation system 2 Vehicle 3 Vehicle control ECU
4 Navigation device 21 CPU
22 RAM
23 RAM
32 Data recording unit 33 Navigation ECU
61 CPU
62 RAM
63 RAM
64 flash memory

Claims (5)

Power supply stopping means for stopping the supply of power from the battery mounted on the vehicle to the vehicle-mounted device mounted on the vehicle when the ACC of the vehicle is turned off;
State transition detection means for detecting that the vehicle ACC is in an off state and the vehicle has transitioned to a driving preparation state that is predicted to start driving after a predetermined time;
Power supply start means for starting supply of power to the vehicle-mounted device when the state transition detection means detects that the vehicle has transitioned to the driving preparation state;
The in-vehicle device is
Work memory,
A program storage medium storing the program;
A program expansion unit that reads a program from the program storage medium and expands the program in the work memory when power supply to the vehicle-mounted device is started by the power supply start unit;
Program execution means for executing the program developed by the program development means when ACC of the vehicle is turned on;
A vehicle-mounted device activation system comprising: Door opening and closing detection means for detecting opening and closing of the door of the driver's seat of the vehicle,
The state transition detection unit detects that the vehicle has transitioned to the driving preparation state when the door opening / closing detection unit detects that the door of the driver's seat of the vehicle is opened. The vehicle-mounted device activation system according to 1. The in-vehicle device is
When the supply of power to the on-vehicle device is stopped by the power supply stop unit, a storage unit that stores the state of the register included in the on-vehicle device to another storage medium;
Reading means for reading out the state of the register stored in the other storage medium when the power supply starting means starts supplying power to the vehicle-mounted device;
The in-vehicle device activation system according to claim 1 or 2, characterized by comprising:   The program expansion means reads an operating system program from the program storage medium and expands the operating system program in the work memory when the supply of power to the vehicle-mounted device is started by the power supply start means. The on-vehicle device activation system according to any one of claims 1 to 3, wherein: A power supply stop step of stopping the supply of power from the battery mounted on the vehicle to the vehicle-mounted device mounted on the vehicle when the ACC of the vehicle is turned off;
A state transition detection step of detecting that the ACC of the vehicle is in an off state and the vehicle has transitioned to a driving preparation state predicted to start driving after a predetermined time;
A power supply start step that starts supplying power to the vehicle-mounted device when it is detected by the state transition detection step that the vehicle has transitioned to the driving preparation state;
Program development for reading the program from a program storage medium in which the program is stored and developing the program in a work memory when the supply of power to the on-vehicle device is started by the power supply start step Steps,
A program execution step of executing the program developed by the program development step in the vehicle-mounted device when the ACC of the vehicle is turned on;
A start-up method for an on-vehicle device, comprising:

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