JP4345644B2 - Vehicle navigation device - Google Patents

Description

  The present invention relates to power supply to an arithmetic circuit of a vehicle navigation apparatus.

  The vehicle navigation apparatus usually takes several tens of seconds from the start of the arithmetic circuit or the like until the start-up is completed and the use becomes possible. Meanwhile, the user waits without using the vehicle navigation device. In that sense, it is desirable that the vehicle navigation device is always turned on even when the ignition is turned off. However, if this happens, the power consumption becomes enormous and the vehicle battery is overburdened. It will take.

  Therefore, a technique is desired that distinguishes between when the power should be applied to the vehicle navigation apparatus when the ignition is off and when it should not be continued. Such a technique is disclosed in Patent Document 1.

In this patent document 1, the vehicle navigation device determines whether or not the driver returns in a short time and turns on the ignition of the vehicle at the time of parking. Even if the ignition is off, the power of the vehicle navigation device is kept on.
Japanese Laid-Open Patent Publication No. 2001-4383

  However, the vehicle navigation device of Patent Document 1 determines whether the distance between the destination on the guidance route and the current position exceeds a certain threshold as to whether the driver returns in a short time. Judgment based on. Therefore, this technique cannot be used in a situation where the vehicle navigation apparatus does not provide route guidance.

  An object of the present invention is to provide a vehicular navigation device that distinguishes between cases where power should be continuously applied to an arithmetic circuit when ignition is off and cases where it should not be continued even in cases other than route guidance. And

In order to achieve the above object, an invention according to claim 1 of the present invention includes an arithmetic circuit, an arithmetic power supply circuit that supplies operating power to the arithmetic circuit when the ignition of the host vehicle is off, facility location information, A storage medium that stores information corresponding to the facility type, and an image display device that immediately stops operation when the host vehicle ignition is off, and the arithmetic circuit is located near the current position when the host vehicle ignition is off. Waiting for the waiting time based on the facility type corresponding to the facility position information to elapse, and functioning as a stopping means for stopping the power supply of the arithmetic power supply circuit after the elapse of the waiting time , the image display device, When the ignition of the host vehicle is turned on, the operation starts immediately, and when the operation starts, the power supply of the arithmetic power supply circuit has been stopped and has stopped. Performing the different screens displayed in the case was not a vehicle navigation apparatus according to claim.

Thus, the vehicle navigation device continues the operation of the control circuit until the waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position elapses when the ignition of the host vehicle is turned off. Let Therefore, when the vehicle is turned off, when the power input to the arithmetic circuit should be sustained and should not be continued based on the facility type corresponding to the facility near the current position at that time, and when The waiting time can be specified . In addition, when the driver returns to the vehicle, it is possible to reduce a sense of incongruity due to the long time required to start the vehicle navigation device 1 and the short time when the driver returns. .

  The arithmetic power supply circuit may supply power to the arithmetic circuit only when the ignition of the host vehicle is off. In addition, the arithmetic power supply circuit supplies power to the arithmetic circuit when the ignition is on. Also good. That is, it is sufficient for the arithmetic power supply circuit to supply operating power to the arithmetic circuit when the ignition of the host vehicle is off.

  Further, the facility location information includes a pinpoint location such as the latitude and longitude of the facility, an area of the facility, and the like.

  The facility position information in the vicinity of the current position includes facility position information indicating the same position as the current position, facility position information indicating a position within a reference distance from the current position, facility position information as an area including the current position, and the like. is there.

In the invention according to claim 2, the operation is immediately stopped when the operation circuit, the operation power supply circuit for supplying operation power to the operation circuit when the own vehicle is turned off, and when the own vehicle is turned off. comprising an image display device, the said operation circuit, when the parking of the vehicle, when the parking position information and parking history storage control means stores in the storage medium the parking time information as the parking history, and the vehicle ignition off , Waiting for the waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position among the parking position information stored in the storage medium to pass, and supplying the calculated power after the waiting time has elapsed acts as a stop means for stopping the power supply of the circuit, the image display apparatus, when the ignition-on of the vehicle, immediately its operation starts, the When dynamic began, a vehicle navigation apparatus which is characterized in that the different screens displayed in the case where the power supply of the operational electricity supply circuit is not stopped in the case that has been stopped until then.

Thus, the vehicle navigation device stores the parking position information and the parking time information in the storage medium as a parking history when the host vehicle is parked, and is stored when the host vehicle is turned off. The operation of the control circuit is continued until the waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position in the parking history elapses. Therefore, when the vehicle is turned off, based on the past parking time in the vicinity of the current position at that time, the calculation circuit is distinguished from the case where the power input should be continued and the waiting time when the power should be maintained. Time can be specified . In addition, when the driver returns to the vehicle, it is possible to reduce a sense of incongruity due to the long time required to start the vehicle navigation device 1 and the short time when the driver returns. .

  The parking position information of the host vehicle includes, for example, the coordinates of the parking position, the area range to which the parking position belongs, the name of the facility to which the parking position belongs, the weighted average position information of the past multiple times including the current time, and the like. Further, the parking time information of the own vehicle includes, for example, a plurality of past weighted average times including the current time, a parking time only for the current time, and the like.

  The parking position information in the vicinity of the current position includes position information indicating the same position as the current position, position information indicating a position within a reference distance from the current position, position information indicating a position belonging to the same facility as the current position, There are position information indicating the facility to which the position belongs, position information indicating the area to which the current position belongs, and the like.

  Further, the invention according to claim 3 is the vehicle navigation device according to claim 2, further comprising a storage medium for storing correspondence information between the facility position information and the facility type, wherein the stop means is an ignition of the host vehicle. Waiting for the waiting time based on the facility type corresponding to the facility position information near the current position to elapse when off, and stopping the power supply of the arithmetic power supply circuit after the waiting time has elapsed To do.

  Thus, when the vehicle ignition is turned off, the vehicular navigation device uses the facility type corresponding to the facility position information in the vicinity of the current position at that time and the past parking time in the vicinity of the current position at that time. Based on this, it is possible to distinguish between when the power input should be continued in the arithmetic circuit and when it should not be performed, and to specify the waiting time when the power is continued.

According to a fourth aspect of the present invention, in the vehicle navigation device according to the second or third aspect, the stop means is based on parking position information stored in the storage medium when the ignition of the host vehicle is off. When the past number of parkings in the vicinity of the current position exceeds a threshold value, waiting for the waiting time to elapse and stopping the power supply of the arithmetic power supply circuit after the waiting time elapses. Features.

  Thus, the vehicular navigation apparatus can distinguish between the case where the power input should be continued in the arithmetic circuit and the case where it should not be continued based on the past number of parking in the vicinity of the current position.

The invention according to claim 5 is a calculation power supply circuit that supplies power for operation to the calculation circuit when the ignition of the host vehicle is off, and a storage medium that stores correspondence information between facility position information and facility type An image display device that immediately stops operation when the host vehicle ignition is off, and the arithmetic circuit is based on the facility type corresponding to the facility position information near the current position when the host vehicle ignition is off. It is a vehicle navigation apparatus that functions as a stop unit that waits for a waiting time to elapse and stops the power supply of the arithmetic power supply circuit after the waiting time elapses .

In the invention according to claim 6, the operation is immediately stopped when the operation circuit, the operation power supply circuit for supplying operation power to the operation circuit when the own vehicle is turned off, and when the own vehicle is turned off. A parking history storage control means for storing the parking position information and the parking time information in the storage medium as a parking history when the host vehicle is parked, and when the host vehicle is turned off. , Waiting for the waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position among the parking position information stored in the storage medium to pass, and supplying the calculated power after the waiting time has elapsed A vehicle navigation device that functions as a stopping unit that stops power supply of a circuit .

The invention according to claim 7 is a program for causing an arithmetic circuit included in the vehicle navigation device to function, and the operation stops immediately when the own vehicle ignition is turned off, and immediately when the own vehicle ignition is turned on. The vehicle navigation device has an image display device that starts, and the program includes, among the facility location information based on the correspondence information between the facility location information stored in the storage medium and the facility type when the ignition of the host vehicle is off , waits for the waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position has passed, after the elapse of the waiting time, the power for operating the arithmetic circuit when ignition-off of the vehicle stopping means stops the power supply to supply operation power supply circuit, and when the ignition-on of the vehicle, the operation until it In the case where the power supply of the power supply circuit is not stopped in the case that has been stopped, as a means to perform different images displayed on said image display device, a program to function the arithmetic circuit.

The invention according to claim 8 is a program for causing an arithmetic circuit included in a vehicle navigation device to function, the operation being stopped immediately when the own vehicle is turned off, and the operation being immediately performed when the own vehicle is turned on. The vehicle navigation device has an image display device starting from the parking history storage control means for storing the parking position information and the parking time information as a parking history in a storage medium when the host vehicle is parked . When the ignition of the host vehicle is turned off, it waits for a waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position among the parking position information stored in the storage medium. after the lapse of a stop means for stopping the power supply of the operation power supply circuit for supplying power for operating the arithmetic circuit, and When the ignition-on of the vehicle, in the case where the power supply of the operational electricity supply circuit is not stopped in the case that has been stopped until then, as a means to perform different images displayed on said image display device, the arithmetic circuit It is a program that makes it work.

As described above, the above-described invention can be realized as a program .
According to a ninth aspect of the present invention, a calculation circuit, a calculation power supply circuit that supplies operating power to the calculation circuit when the ignition of the host vehicle is off, and correspondence information between facility location information and facility type are stored. And an image display device, and the arithmetic circuit waits for a waiting time based on a facility type corresponding to the facility position information in the vicinity of the current position to elapse when the host vehicle is turned off. , Functioning as a stopping means for stopping the power supply of the arithmetic power supply circuit after the waiting time has elapsed, and when the ignition of the host vehicle is on, the power supply of the arithmetic power supply circuit is stopped until then. A vehicle navigation device that displays different screens depending on whether it is stopped or not stopped.
The invention according to claim 10 includes an arithmetic circuit, an arithmetic power supply circuit that supplies operating power to the arithmetic circuit when the ignition of the host vehicle is off, and an image display device, the arithmetic circuit comprising: A parking history storage control means for storing the parking position information and the parking time information in the storage medium as a parking history when the host vehicle is parked, and the parking position information stored in the storage medium when the host vehicle is turned off. Among them, it functions as a stopping unit that waits for the waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position to elapse and stops the power supply of the arithmetic power supply circuit after the elapse of the waiting time. However, when the ignition of the host vehicle is turned on, the image display device does not stop when the power supply of the arithmetic power supply circuit has been stopped until then. If the by performing different screen display is a vehicle navigation apparatus according to claim.
According to an eleventh aspect of the present invention, there is provided a program for causing an arithmetic circuit included in a vehicle navigation device to function, wherein the vehicle navigation device includes an image display device, and the program is stored when an ignition of the host vehicle is off. Waiting for the waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position to pass among the facility position information based on the correspondence information between the facility position information and the facility type stored in the storage medium. , Stop means for stopping the power supply of the arithmetic power supply circuit that supplies operating power to the arithmetic circuit when the ignition of the host vehicle is turned off after the waiting time has elapsed, and the calculation up to that time when the ignition of the host vehicle is on Different screen displays on the image display device depending on whether or not the power supply of the power supply circuit is stopped As it means for causing a program to function the arithmetic circuit.
The invention according to claim 12 is a program for causing an arithmetic circuit included in a vehicle navigation device to function, wherein the vehicle navigation device includes an image display device, and the program is stored when the host vehicle is parked. Parking history storage control means for storing the parking position information and the parking time information in the storage medium as a parking history, and parking of the vicinity of the current position among the parking position information stored in the storage medium when the ignition of the host vehicle is off. Stop means for waiting for the waiting time based on the parking time information corresponding to the position information to elapse and stopping the power supply of the arithmetic power supply circuit for supplying the operation power to the arithmetic circuit after the waiting time has elapsed. When the ignition of the host vehicle is turned on, whether or not the power supply of the arithmetic power supply circuit has been stopped until then In the case, as a means to perform different images displayed on said image display device, a program to function the arithmetic circuit.

  FIG. 1 shows a hardware configuration of a vehicle navigation apparatus 1 according to this embodiment. The vehicle navigation apparatus 1 is configured to receive two systems of power supply from a battery 2 mounted on the vehicle. Specifically, the two systems are a system that receives power from the battery 2 via the ignition unit 3 and a system that receives power directly from the battery 2. The ignition unit 3 supplies power from the battery 2 to the vehicle navigation device 1 when the vehicle key switch is turned on, and the vehicle navigation device 1 from the battery 2 when the vehicle key switch is turned off. The power supply is cut off.

  The vehicle navigation device 1 includes a position detector 11, an operation input unit 12, an image display device 13, a power supply circuit 14, an LED 15, a calendar unit 16, a hard disk drive 17 (denoted as HDD in the drawing), and a control unit 18. have.

  The position detector 11 includes a well-known sensor (not shown) such as a geomagnetic sensor, a gyroscope, a vehicle speed sensor, and a GPS receiver. The current position and direction of the vehicle based on the characteristics of each of these sensors. Is output to the control unit 18.

  The operation input unit 12 includes a plurality of mechanical switches provided in the vehicle navigation device 1 and an input device such as a touch panel provided so as to overlap the display surface of the image display device 13. A signal based on the touch is output to the control unit 18.

  The image display device 13 displays a video based on the video signal output from the control unit 18 to the user. Examples of the display image include a map centering on the current location. The image display device 13 realizes such an operation by receiving power supply from the battery 2 only by the system via the ignition unit 3.

  The power supply circuit 14 is a circuit for supplying the power received from the battery 2 to each unit of the control unit 18 as operating power. The power supply circuit 14 switches on / off of the power supply to the control unit 18 in accordance with a control signal from the control unit 18.

  The LED 15 is a light emitter that emits light to the outside of the vehicle navigation device 1 by lighting or blinking based on a signal from the control unit 18.

  The calendar unit 16 includes calendar data such as year, month, and day, and a clock for measuring real time, and based on a control signal from the CPU 21, the current year and month corresponding to the real time measured by the clock. This is a device for outputting date and time data to the control unit 18. The calendar unit 16 operates without receiving power supply from the battery 2 by supplying power from the built-in battery in the vehicle navigation apparatus 1.

  The hard disk drive 17 is a non-volatile magnetic storage medium, and stores a program for the control unit 18, map data for route guidance, and the like.

  The map data includes road data and facility data including the position and type of road pieces (links) and intersections (nodes), connection relationship information between intersections and road pieces, and the like. The facility data has a plurality of entries for each facility, and each entry has data indicating name information, location information, facility type information, and the like of the target facility. Here, the facility type refers to a classification according to the nature of the facility, such as a convenience store, a supermarket, a department store, a family restaurant, or a hotel. This facility data corresponds to correspondence information between facility position information and facility type.

  The control unit 18 receives power supply from the battery 2 via the above-described two systems. If any one of the power supply is performed, the control unit 18 includes a key state input unit 20, a CPU 21, a flash ROM 22, a DRAM 23, and the like. Each part of 18 operates, and also supplies operating power to the position detector 11, the operation input unit 12, and the hard disk drive 17.

  The key state input unit 20 detects the on / off state of the ignition key based on the electric power from the battery 2 received via the ignition unit 3 and outputs the detection result to the CPU 21.

  The CPU 21 executes a program for the operation of the vehicle navigation device 1 read from the flash ROM 22 or the hard disk drive 17, and at the time of execution, a signal from the position detector 11, an operation input unit 12, as necessary. Data, and data such as year, month, day, and time data from the calendar unit 16 are acquired, and data reading and writing are controlled to the flash ROM 22, DRAM 23, and hard disk drive 17, and the image display device 13 is controlled. The signal is output to the power supply circuit 14, the LED 15, and the calendar unit 16.

  Specific processing performed by the CPU 21 executing the program includes current position specifying processing, guidance route search processing, route guidance processing, and the like.

  The current position specifying process is a process for specifying the current position and direction of the vehicle using a known technique such as map matching based on the signal from the position detector 11.

  The guidance route search process is a process of receiving an input of a destination by the user from the operation input unit 12 and calculating an optimum guidance route from the current position to the destination.

  In the route guidance process, map data is read from the hard disk drive 17 and an image in which the calculated guidance route, destination facility, transit facility, current position, etc. are superimposed on the map indicated by this map data is output to the image display device 13. It is processing.

  The CPU 21 is configured to execute the programs 100 to 400 shown in FIGS. 2 to 4 in a multitasking manner. Hereinafter, the operation of the vehicle navigation apparatus 1 realized by the CPU 21 executing these programs 100 to 400 will be described. Note that the CPU 21 secures three areas in the storage area of the flash ROM 22, that is, the PMAP area 31, the PBUFF area 32, and the fwait area 33 in order to execute these programs 100 to 400.

  The CPU 21 starts to execute the parking position storage program 100 shown in FIG. 2 after a predetermined period of time after the ignition of the host vehicle is turned off to on based on a signal from the key state input unit 20. The predetermined period refers to a predetermined time (for example, 10 minutes) in which the PBUFF area 32 is not rewritten before execution of a power supply stop program 300 described later. In the execution of the parking position storage program 100, the CPU 21 first acquires the current position in step 110. That is, the current position of the host vehicle is specified by the above-described current position specifying process.

  In step 120, the current date / time information is acquired from the calendar unit 16 by outputting a control signal to the calendar unit 16.

  Subsequently, in step 130, the current position information (latitude, longitude) and date / time information acquired in steps 110 and 120 are written in the PBUFF area 32 area of the flash ROM 22. At this time, if the current position information and date / time information have already been written in the PBUFF area 32, the current current position information and date / time information are written by overwriting the written information.

  Subsequently, at step 140, it is determined from the signal from the key state input unit 20 whether or not the ignition key position is off. If it is off, the execution of the parking position storage program 100 is terminated. 110 is executed.

  Note that in the execution of the parking position storage program 100, one round of processing of steps 110, 120, 130, and 140 is, for example, about 10 seconds.

  By executing such a program by the CPU 21, until the predetermined time elapses after the ignition is turned on, the PBUFF area 32 of the DRAM 23 stores information on the position and date / time at the time of the previous ignition off. become. In most cases, this information corresponds to information on the position and date when the vehicle is parked.

  Next, the PMAP writing program 200 in FIG. 2 will be described. The CPU 21 reads the PMAP writing program 200 when the ignition of the vehicle is turned on, or when the power supply to the vehicle navigation device 1 starts and the vehicle navigation device 1 is activated, and the position detector 11 receives the GPS signal. This is executed immediately after the machine becomes capable of outputting position information. First, in step 210, a control signal is output to the calendar unit 16 to obtain current date / time information. Subsequently, in step 220, the current position information (latitude and longitude) of the host vehicle is acquired from the GPS receiver of the position detector 11. In step 230, the position information and date / time information stored in the PBUFF area 32 are read out.

  Subsequently, at step 240, it is determined whether or not the vehicle has moved. This determination is made based on whether or not the current vehicle position acquired in step 220 is more than the reference distance from the parking position read in step 230. The reference distance is a distance (for example, 300 meters) that is too large as an error of the GPS receiver. This determination makes it possible to determine whether or not the vehicle has been moved during parking, for example, tow truck movement. When it is determined that the vehicle has moved, the execution of the PMAP writing program 200 is terminated. When it is determined that the vehicle has not moved, step 250 is subsequently executed.

  In step 250, the type data of the current position, that is, the facility type of the facility to which the current position belongs is acquired. Here, which facility the current position belongs to is determined based on the map data in the hard disk drive 17. Specifically, when the current position is in the vicinity within a predetermined distance from the position (latitude, longitude) of the facility in the map data, it may be determined that the current position belongs to the facility. When an area of a facility (that is, a geographical region) is defined in the map data, it may be determined that the current position belongs to the facility when the current position is in the area. Note that the above-mentioned predetermined distance may be changed according to the size of the parking space of the type of the facility, such as 20 meters for convenience stores and 500 meters for large department stores.

  Subsequently, in step 260, a value obtained by subtracting the date and time read in step 230 from the current date and time acquired in step 210 is specified as the parking time.

  Subsequently, at step 270, it is determined whether or not there is an entry in the PMAP area 31 in the same area as the current position. An entry is a unit of data consisting of a set of a parking position, the number of parking times, a facility type, a parking time, and a writing date / time included in a parking time learning map (corresponding to a parking history) stored in the PMAP area 31. Say. The parking time learning map can have a plurality of entries. However, when the vehicle navigation apparatus 1 is shipped from the factory, the content of the parking time learning map is empty. Here, whether or not there is an entry in the same area as the current position is determined based on whether or not there is an entry having a parking position within the predetermined distance from the position of the facility to which the host vehicle specified in step 250 belongs. . In addition, when the area of the said facility is defined in map data, you may determine by the presence or absence of the entry which has the parking position which belongs to the said area. If there is an entry in the same area as the current position, then step 270 is executed, otherwise, step 280 is executed.

  In step 280, the target entry determined to be “Yes” in step 270 is updated. Specifically, the parking position of the entry is changed to a learned value based on the current position. The learning value based on the current position may be the current position itself, or may be a weighted average of the current parking position value and the current position value in the entry. Further, the parking position may be changed to a learned value based on the current parking position read in step 230, or may be changed to a learned value based on the location of the facility to which the current position belongs.

  Furthermore, the parking number of the entry is incremented to a value larger by one time than the current value. Further, the parking time of the entry is changed to a learned value based on the current parking time specified in step 260. The learning value based on the current parking time may be the current parking time itself, or a weighted average of the current parking time value in the entry and the current parking position value. It may be a moving average of several past parking positions including. In addition, the writing date / time of the entry is changed to the current date / time specified in step 210. The facility type value of the entry may be left as it is, or may be the facility type specified in step 250.

  In step 280, it is determined whether or not there is an empty area in the parking time learning map, that is, whether or not there is an empty data space to which a new entry can be added, and if there is, step 290 is executed. Subsequently, in step 285, the entry with the oldest writing date / time is deleted from the parking time learning map to prepare a new entry empty area, and then step 290 is executed.

  In step 290, a new entry is added to the parking time learning map. Specifically, as the value of the new entry, the parking position is the current position, the current parking position read in step 230, or the position of the facility to which the current position belongs. In addition, the number of parking is a value indicating one time. The parking time is the current parking time specified in step 260. In addition, the writing date / time of the entry is changed to the current date / time specified in step 210. Further, the facility type value of the entry is set to the facility type specified in step 250.

  After steps 275 and 290, execution of the PMAP writing program 200 ends. When the CPU 21 executes such a PMAP writing program 200, the vehicle navigation apparatus 1 stores the own vehicle position when the ignition is turned on (that is, at the time of restart) in the PBUFF area 32 by executing the parking position storage program 100. If the vehicle position is substantially the same as when the ignition is off (that is, when parking is started) (see step 240), the facility type to which the parking position belongs is specified (see step 250), and this ignition is turned on from the time when the parking starts. Calculate the parking time as the elapsed time until the time (step 260), including the parking position information based on the parking position, the parking time information based on the parking time, the specified facility type, and the current time in the area to which the parking position belongs It consists of data of past parking times and writing date and time. The entry, is stored in the PMAP area 31 as a parking time learning map.

  Next, the power supply stop program 300 in FIG. 4 will be described. The CPU 21 starts executing the power supply stop program 300 after detecting that the ignition is turned on from the off state via the key state input unit 20 or immediately after the vehicle navigation device 1 is activated. In step 310, the process waits until it is detected via the key state input unit 20 that the ignition key has been turned off.

  When the ignition key is turned off, subsequently, in step 325, the current position of the host vehicle is acquired by the above-described current position specifying process.

  Subsequently, at step 330, it is determined whether or not there is an entry in the same area as the current position in the parking time learning map. A specific method for this determination is the same as that in step 270 of the PMAP writing program 200. If there is an entry in the same area, step 335 is subsequently executed, and if not, step 363 is subsequently executed.

  In step 335, it is determined whether the number of learnings exceeds a predetermined threshold value (for example, 5 times). Here, the learning count is the value of the parking count included in the target entry determined to be “Yes” in Step 330. If it exceeds the threshold value, then in step 340, the value of the flag fwait in the fwait area 33 is set to 1, and if not, step 363 is executed.

  In step 345 following step 340, a timer value (corresponding to a waiting time) is set, and counting of the elapsed time from the present is started. This timer value is set based on the parking time and the facility type included in the target entry determined as “Yes” in Step 330. For example, the timer value may be (the parking time + the time corresponding to the facility type). Here, the time corresponding to the facility type is a time allocated in advance for each facility type. This time is determined based on the normal parking time in the facility type. For example, 20 minutes is allocated to a convenience store or supermarket, 10 minutes is allocated to a gas station, and 0 minutes is allocated to a registered home parking lot. In addition, the timer value may be the parking time itself or the time corresponding to the facility type.

  In step 350, a signal for blinking the LED 15 is output to the LED 15.

  In step 355, it is determined whether the timer has expired, that is, whether the count of the time started in step 345 has exceeded the value of the timer value. If it has expired, step 363 is subsequently executed and the timer has expired. If not, step 360 is executed subsequently. In step 360, it is determined whether or not the ignition has been turned on via the key state input unit 20. If detected, the power supply stop program 300 is terminated, and if not detected, step 350 is subsequently executed.

  In step 363, the value of the flag fwait in the fwait area 33 is reset to 0. Subsequently, in step 365, end processing, that is, various processing as preparation for ending the operation of the vehicle navigation device 1 is performed.

  Subsequently, in step 370, a power-off process is performed. Specifically, a signal to turn off the power supply is output to the power supply circuit 14. After step 370, execution of the power supply stop program 300 ends.

  When the CPU 21 is executing such a power supply stop program 300 and the ignition key of the vehicle is turned off, the power from the battery 2 to the vehicle navigation device 1 via the ignition unit 3 is cut off first. The operation of the image display device 13 is stopped. On the other hand, the control unit 18 is activated by power supply from the battery 2 via the power supply circuit 14, and there is an entry in the parking time learning map in the same area as the current position of the host vehicle (see step 330). If the number of parking in the vehicle exceeds the threshold (see step 335), the flag fwait is set to 1 (see step 340), and the LED 15 is kept blinking (see step 350) while the parking in the entry Wait until the timer time has elapsed or the ignition is turned on based on at least one of the time and the facility type (see steps 345, 350, 355, 360). The operation of the control unit 18 is stopped by cutting off the power supply to the control unit 18 including the CPU 21. That (see step 363-370). If the ignition is turned on before the timer time expires (see step 360), waiting for the timer time to expire is stopped. Further, when the vehicle ignition key is turned from on to off, the vehicular navigation apparatus 1 does not include an entry in the same area as the current position of the host vehicle in the parking time learning map (see step 330). The value is set to 0 and the operation is immediately stopped. In addition, when the vehicle ignition key is switched from on to off, the vehicular navigation device 1 can count the number of parkings in the entry even if an entry in the same area as the current position of the host vehicle is in the parking time learning map. If the threshold value does not exceed the threshold value (see step 340), the value of the flag fwait is set to 0, and the operation is immediately stopped. This is because, when the number of times of parking in the area in the past is small, there is a high possibility of erroneous control even if the power on / off control is performed with reference to the parking history.

  Next, the return / startup program 400 of FIG. 5 will be described. The CPU 21 activates the power supply stop program 300 when the vehicle ignition is turned on or when the power supply via the ignition unit 3 to the image display device 13 and the control unit 18 starts and the vehicle navigation device 1 is started. Is executed immediately after starting, and it is first determined in step 410 whether or not the value of the flag fwait is 1. Since the flag fwait is a value stored in the non-volatile flash ROM 22, the value is stored even when the power supply to the control unit 18 is stopped. Therefore, if the flag fwait is 1, it means that the control unit 18 is operating immediately before the ignition is turned on, and if the flag fwait is 0, the control unit 18 is operated immediately before the ignition is turned on. Means that it was stopped. If the flag fwait is 0, then step 420 is executed, and if it is 1, then step 440 is executed.

  In step 420, the image display device 13 is caused to display a start-up screen for the case where the operation of the control unit 18 has been stopped immediately before, that is, a normal start-up screen at power-on. Subsequently, in step 430, normal startup processing is performed. During this startup process, a control signal for requesting the power supply circuit 14 to supply power is output.

  In step 440, a startup screen different from the startup screen in step 420 is displayed on the image display device 13 as a startup screen for the case where the control unit 18 was operating immediately before. Subsequently, at step 450, return start processing is performed.

  Following steps 450 and 460, in step 460, for example, a menu screen or a map is displayed, and processing for normal operation of the vehicle navigation device 1 is started. After step 460, execution of the return / startup program 400 ends.

  When the CPU 21 executes such a return / startup program 400, the vehicle navigation apparatus 1 displays different start-up screens depending on whether the control unit 18 is operating or stopped immediately before the ignition is turned on. It is displayed on the display device 13. In this way, when the driver returns to the vehicle, it is possible to reduce the sense of discomfort due to the long time required to start the vehicle navigation device 1 and the short time required to start the vehicle navigation device 1.

  With the configuration and operation as described above, the vehicle navigation apparatus 1 allows the parking position information of the host vehicle, the parking time information thereof, the facility type to which the parking position belongs, and the past parking including the current time in the area to which the parking position belongs. An entry consisting of the number of times and the data of the writing date is stored as a parking time learning map. Further, the vehicle navigation device 1 stops the operation of the image display device 13 when the ignition key of the vehicle is switched from on to off, and an entry in the same area as the current position of the host vehicle is in the parking time learning map, and If the number of parkings during entry exceeds the threshold value, the LED 15 continues to blink, the time indicated by the timer value based on at least one of the parking time during the entry and the facility type, or the ignition is turned on. After waiting for the timer value time, the operation of the control unit 18 is stopped.

  Thus, when the vehicle ignition is turned off, the vehicular navigation device 1 continues to input power to the control unit 18 based on the past parking time and facility type in the vicinity of the current position at that time. It is possible to distinguish between the case where it should be and the case where it should not, and to specify the waiting time when it lasts. Further, since the LED 15 blinks between the time when the ignition is turned off and the time when the timer expires, the driver can visually check whether or not the vehicle navigation device 1 is in operation when the ignition is turned off.

  In the above embodiment, the CPU 21 corresponds to an arithmetic circuit, the power supply circuit 14 corresponds to an arithmetic power supply circuit, and the hard disk drive 17, the flash ROM 22, and the DRAM 23 correspond to storage media.

  Further, the CPU 21 functions as a parking history storage control unit by executing the parking position storage program 100 and the PMAP writing program 200. Further, the CPU 21 functions as a stop unit by executing the power supply stop program 300.

  When the vehicle navigation apparatus 1 has a sensor that can detect the remaining battery level, in executing the power supply stop program 300, the CPU 21 determines that the remaining battery level is low when the ignition is turned off. If the amount is less than or equal to a predetermined amount (for example, 10%), a signal to stop power supply may be immediately output to the power supply circuit 14.

  In addition, even when the user has set the operation input unit 12 to always stop the operation of the vehicle navigation device 1 immediately after the ignition is turned off, in the execution of the power supply stop program 300, the CPU 21 When the ignition is turned off, a signal to stop power supply may be output to the power supply circuit 14 immediately.

  Further, as a means for allowing the driver to recognize whether or not the vehicle navigation device 1 was operating immediately before the ignition was turned on, for example, the CPU 21 may use “Navi can be used immediately” in step 450 of the return / startup program 400. Or the like may be output to a speaker (not shown).

  Also, if the driver seat is equipped with a pressure sensor that recognizes the driver's seating, if the driver remains seated even after the ignition is turned off, an audio output such as "Waiting with the navigation powered on" will be output. Alternatively, a speaker (not shown) may perform the operation. This makes it possible for the driver who has listened to such an announcement to have a chance to perform an operation for forcibly stopping the operation of the vehicle navigation device 1.

  Also, if a door lock sensor is provided, if the door is not locked after the ignition is turned off, the speaker (not shown) will output a sound such as “Waiting with the navigation powered on”. It may be.

  In addition, when the vehicle has a keyless entry function and a notification that the vehicle is unlocked by receiving an unlock signal from the transmitter of the driver is output to the vehicle navigation device 1, The navigation device 1 may be configured to blink the blinker a greater number of times or a smaller number of times than when unlocking by a normal keyless entry when the unlocking is performed at the time of ignition off.

  The entry of the parking time learning map may include data on parking facilities, the number of parking times, facility types, parking times, and writing times. That is, the vehicle navigation apparatus 1 may use a parking facility as a facility to which the vehicle position belongs instead of the vehicle position at the time of parking as entry data to be stored in the parking time learning map. Good. In this case, in step 270 of the PMAP writing program 200 and step 330 of the power supply stop program 300, it is only necessary to determine whether or not there is an entry having the facility to which the current position belongs as a parking facility.

  Moreover, the vehicle navigation apparatus 1 may perform an operation that is not based on a parking facility or a parking facility type. For example, the type of step 250 is not specified, and in step 270, it is determined whether or not an entry having parking position information within a predetermined distance (for example, 10 meters) from the current position is in the parking time learning map. In 345, the timer value may be a value based on the parking time in the read entry. In this way, when the ignition of the vehicle is turned off, based on the past parking time in the vicinity of the current position at that time, the case where the power input should be continued in the arithmetic circuit and the case where it should not be distinguished are distinguished. It is possible to specify the waiting time when it lasts.

  Further, if the vehicle navigation apparatus 1 can detect door lock / unlock, it may be determined in step 140 whether or not the door is locked after the ignition is turned off.

  In step 345 of the power supply stop program 300, if the parking time is very long (for example, 2 hours or more), the timer value is set to zero so that the operation of the control unit 18 is substantially stopped immediately after the ignition is turned off. May be. By doing in this way, it becomes possible to prevent the battery from rising due to the vehicle navigation device 1 continuously operating in a home parking lot or the like.

It is a block diagram which shows the hardware constitutions of the vehicle navigation apparatus 1 which concerns on embodiment of this invention. It is a flowchart of the parking position storage program 100 which CPU21 performs. It is a flowchart of the PMAP writing program 200 which CPU21 performs. It is a flowchart of the electric power supply stop program 300 which CPU21 performs. 4 is a flowchart of a return / startup program 400 executed by a CPU 21.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle navigation apparatus, 2 ... Battery, 3 ... Ignition part,
DESCRIPTION OF SYMBOLS 11 ... Position detector, 12 ... Operation input part, 13 ... Image display apparatus, 14 ... Power supply circuit, 15 ... LED, 16 ... Calendar part, 17 ... Hard disk drive, 18 ... Control part, 20 ... Key state input part, 21 ... CPU, 22 ... Flash ROM, 23 ... DRAM, 31 ... PMAP area, 32 ... PBUFF area, 33 ... fwait area,
100: Parking position storage program, 200 ... PMAP writing program,
300: Power supply stop program, 400: Return / start program.

Claims (12)

An arithmetic circuit;
An arithmetic power supply circuit for supplying operation power to the arithmetic circuit when the ignition of the host vehicle is off;
A storage medium for storing correspondence information between facility location information and facility type ;
An image display device that immediately stops operation when the ignition of the host vehicle is off ,
The arithmetic circuit is:
When the ignition of the host vehicle is turned off, it waits for a waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position to elapse, and stops the power supply of the arithmetic power supply circuit after the waiting time has elapsed. Functions as a stopping means ,
The image display device starts its operation immediately when the ignition of the host vehicle is turned on, and when the operation starts, when the power supply of the arithmetic power supply circuit has been stopped and when it has not stopped. A vehicle navigation device characterized by displaying different screens . An arithmetic circuit;
An arithmetic power supply circuit for supplying operation power to the arithmetic circuit when the ignition of the host vehicle is off ;
An image display device that immediately stops operation when the ignition of the host vehicle is off ,
The arithmetic circuit is:
Parking history storage control means for storing the parking position information and the parking time information in a storage medium as parking history when the host vehicle is parked, and among the parking position information stored in the storage medium when the host vehicle is turned off. Waiting for the waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position to elapse, and functioning as a stopping means for stopping the power supply of the arithmetic power supply circuit after the elapse of the waiting time ,
The image display device starts its operation immediately when the ignition of the host vehicle is turned on, and when the operation starts, when the power supply of the arithmetic power supply circuit has been stopped and when it has not stopped. A vehicle navigation device characterized by displaying different screens . A storage medium for storing correspondence information between facility location information and facility type;
The stop means waits for a waiting time based on a facility type corresponding to the facility position information in the vicinity of the current position to elapse when the host vehicle ignition is off, and after the waiting time elapses, The vehicle navigation device according to claim 2, wherein power supply is stopped. The stop means, when the ignition of the host vehicle is turned off, based on the parking position information stored in the storage medium, when the past number of parking in the vicinity of the current position exceeds a threshold value, the waiting time is The vehicle navigation apparatus according to claim 2 or 3, wherein the vehicle navigation apparatus waits for the elapse of time and stops the power supply of the arithmetic power supply circuit after elapse of the waiting time. An arithmetic circuit;
An arithmetic power supply circuit for supplying operation power to the arithmetic circuit when the ignition of the host vehicle is off;
A storage medium for storing correspondence information between facility location information and facility type ;
An image display device that immediately stops operation when the ignition of the host vehicle is off ,
The arithmetic circuit is:
When the ignition of the host vehicle is turned off, it waits for a waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position to elapse, and stops the power supply of the arithmetic power supply circuit after the waiting time has elapsed. A vehicle navigation apparatus that functions as a stopping means. An arithmetic circuit;
An arithmetic power supply circuit for supplying operation power to the arithmetic circuit when the ignition of the host vehicle is off ;
An image display device that immediately stops operation when the ignition of the host vehicle is off ,
The arithmetic circuit is:
Parking history storage control means for storing the parking position information and the parking time information in a storage medium as parking history when the host vehicle is parked, and among the parking position information stored in the storage medium when the host vehicle is turned off. , Waiting for the waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position to elapse, and functioning as a stopping means for stopping the power supply of the arithmetic power supply circuit after the elapse of the waiting time A vehicle navigation apparatus characterized by the above. A program for causing an arithmetic circuit included in a vehicle navigation device to function,
The vehicle navigation device has an image display device that immediately stops operation when the ignition of the host vehicle is off, and immediately starts operation when the ignition of the host vehicle is on.
The program is
When ignition-off of the vehicle, among the facility location information based on correspondence information of facility location information stored in the storage medium and the facility type, the waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position wait for it but passes, after a lapse of the waiting time, stopping means for stopping the power supply of the operation power supply circuit for supplying power for operating the arithmetic circuit when ignition-off of the vehicle, and
As the means for causing the image display device to display different screens depending on whether the power supply of the arithmetic power supply circuit has been stopped or not when the ignition of the host vehicle is on. A program that makes it work. A program for causing an arithmetic circuit included in a vehicle navigation device to function,
The vehicle navigation device has an image display device that immediately stops operation when the ignition of the host vehicle is off, and immediately starts operation when the ignition of the host vehicle is on.
The program is
Parking history storage control means for storing the parking position information and the parking time information in a storage medium as parking history when the host vehicle is parked ,
When the ignition of the host vehicle is turned off, it waits for a waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position among the parking position information stored in the storage medium. after the lapse of a stop means for stopping the power supply of the operation power supply circuit for supplying power for operating the arithmetic circuit, and
As the means for causing the image display device to display different screens depending on whether the power supply of the arithmetic power supply circuit has been stopped or not when the ignition of the host vehicle is on. A program that makes it work. An arithmetic circuit;
An arithmetic power supply circuit for supplying operation power to the arithmetic circuit when the ignition of the host vehicle is off;
A storage medium for storing correspondence information between facility location information and facility type ;
An image display device ,
The arithmetic circuit is:
When the ignition of the host vehicle is turned off, it waits for a waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position to elapse, and stops the power supply of the arithmetic power supply circuit after the waiting time has elapsed. Functions as a stopping means ,
When the ignition of the host vehicle is turned on, the image display device displays different screens depending on whether the power supply of the arithmetic power supply circuit has been stopped or not. Navigation device. An arithmetic circuit;
An arithmetic power supply circuit for supplying operation power to the arithmetic circuit when the ignition of the host vehicle is off ;
An image display device ,
The arithmetic circuit is:
Parking history storage control means for storing the parking position information and the parking time information in a storage medium as parking history when the host vehicle is parked, and among the parking position information stored in the storage medium when the host vehicle is turned off. Waiting for the waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position to elapse, and functioning as a stopping means for stopping the power supply of the arithmetic power supply circuit after the elapse of the waiting time ,
When the ignition of the host vehicle is turned on, the image display device displays different screens depending on whether the power supply of the arithmetic power supply circuit has been stopped or not. Navigation device. A program for causing an arithmetic circuit included in a vehicle navigation device to function,
The vehicle navigation device has an image display device,
The program is
When ignition-off of the vehicle, among the facility location information based on correspondence information of facility location information stored in the storage medium and the facility type, the waiting time based on the facility type corresponding to the facility position information in the vicinity of the current position wait for it but passes, after a lapse of the waiting time, stopping means for stopping the power supply of the operation power supply circuit for supplying power for operating the arithmetic circuit when ignition-off of the vehicle, and
As the means for causing the image display device to display different screens depending on whether the power supply of the arithmetic power supply circuit has been stopped or not when the ignition of the host vehicle is on. A program that makes it work. A program for causing an arithmetic circuit included in a vehicle navigation device to function,
The vehicle navigation device has an image display device,
The program is
Parking history storage control means for storing the parking position information and the parking time information in a storage medium as parking history when the host vehicle is parked ,
When the ignition of the host vehicle is turned off, it waits for a waiting time based on the parking time information corresponding to the parking position information in the vicinity of the current position among the parking position information stored in the storage medium. after the lapse of a stop means for stopping the power supply of the operation power supply circuit for supplying power for operating the arithmetic circuit, and
As the means for causing the image display device to display different screens depending on whether the power supply of the arithmetic power supply circuit has been stopped or not when the ignition of the host vehicle is on. A program that makes it work.

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