JP5814014B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device technology.

  Conventionally, an input reception technique using a touch panel or the like is used in a navigation device. Patent Document 1 describes a technique regarding such an information processing apparatus.

JP 2010-167825 A

  In the information processing apparatus as described above, when performing an input operation in a situation where vibration is likely to occur, it may be easier to determine whether the long press or the short press has been performed, but the long press or the short press In other complicated input operations that are not limited, an unintended input may be performed, and an erroneous operation still tends to occur.

  An object of the present invention is to provide a technique for reducing the occurrence of erroneous operations with a simpler method.

In order to solve the above problems, a navigation device according to the present invention includes a vibration detection unit that detects and outputs a vibration amount in three axis directions and a change in the vibration amount, a contact reception unit that detects and receives a contact, and input information. An input receiving means for receiving, and an input preprocessing means for transferring to the input receiving means as input information excluding a part of the contact received by the contact receiving means when the vibration detecting means detects vibration. The input preprocessing means determines a part of the contact when the vibration amount detected by the vibration detection means is equal to or greater than a predetermined vibration amount and the change in the vibration amount is equal to or greater than a predetermined threshold value. If the change in the vibration amount is continued for a predetermined period or longer, the predetermined threshold for the change in the vibration amount is set as the duration. It is characterized in that it is set higher in response .

It is a schematic block diagram of a navigation apparatus. It is a block diagram regarding the input reception of a navigation apparatus. It is explanatory drawing which shows the use condition of a navigation apparatus. It is a figure which shows the structure of a link table. It is a figure which shows the structure of a cancellation operation | movement table. It is a functional block diagram of an arithmetic processing part. It is a flowchart of an input pre-processing. It is a flowchart of change amount threshold value setting processing.

  Hereinafter, a navigation device 100 that is an in-vehicle device to which a first embodiment of the present invention is applied will be described with reference to the drawings.

  FIG. 1 shows a configuration diagram of the navigation device 100. The navigation device 100 includes an arithmetic processing unit 1, a display 2, a storage device 3, a voice input / output device 4 (including a microphone 41 as a voice input device and a speaker 42 as a voice output device), an input device 5, and a ROM. A device 6, a vehicle speed sensor 7, a gyro sensor 8, a GPS (Global Positioning System) receiver 9, an FM multiplex broadcast receiver 10, and a beacon receiver 11, vibrations that detect three-axis vibrations orthogonal to each other And a sensor 12.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the present location is detected based on information output from the various sensors 7 and 8, the GPS receiver 9, the FM multiplex broadcast receiver 10, and the like. Further, map data necessary for display is read from the storage device 3 or the ROM device 6 based on the obtained current location information.

  The arithmetic processing unit 1 develops the read map data in graphics, and displays a mark indicating the current location on the display 2 in a superimposed manner. In addition, an optimal route (or a route or stopover point) that connects the current location or the departure location instructed by the user with the map data stored in the storage device 3 or the ROM device 6 is used. Search for the recommended route. In addition, the arithmetic processing unit 1 guides the user using the speaker 42 and the display 2.

  In addition, the arithmetic processing unit 1 acquires vibration information from the vibration sensor 12, and when a predetermined type of vibration is detected, information related to the input received from the input device 5 before and after that is used as the input type. Adjust accordingly. That is, when vibration occurs when receiving an input from the input device 5, the arithmetic processing unit 1 cancels all or a part of the input or returns to the operation state before the input. , Make adjustments so that unintended input is hard to be adopted.

  The arithmetic processing unit 1 of the navigation device 100 has a configuration in which each device is connected by a bus 25. The arithmetic processing unit 1 includes a CPU (Central Processing Unit) 21 that executes various processes such as numerical calculation and control of each device, and a RAM (Random Access Memory) that stores map data, arithmetic data, and the like read from the storage device 3. ) 22, a ROM (Read Only Memory) 23 for storing programs and data, and an I / F (interface) 24 for connecting various types of hardware to the arithmetic processing unit 1.

  The display 2 is a unit that displays graphics information generated by the arithmetic processing unit 1 or the like. The display 2 is configured by a liquid crystal display, an organic EL display, or the like.

  The storage device 3 is composed of at least a readable / writable storage medium such as an HDD (Hard Disk Drive) or a nonvolatile memory card.

  This storage medium stores a link table 200, a cancel operation table 300, and the like which are map data (including link data of links constituting roads on the map) necessary for a normal route search device.

  FIG. 4 is a diagram illustrating the configuration of the link table 200. The link table 200 includes, for each mesh identification code (mesh ID) 201, which is a partitioned area on the map, link data 202 of each link constituting a road included in the mesh area.

  For each link ID 211 that is a link identifier, the link data 202 includes coordinate information 222 of two nodes (start node and end node) constituting the link, a road type 223 indicating the type of road including the link, and a link length. Link length 224 indicating the link travel time 225 stored in advance, a start connection link that is a link connected to the start node of the link, and an end connection link that is a link connected to the end node of the link It includes a start connection link, an end connection link 226, a route number 227 indicating the route number of the road including the link, a traffic congestion level 228 for specifying the traffic congestion level of the link, and the like.

  Here, by distinguishing the start node and the end node for the two nodes constituting the link, the upward direction and the downward direction of the same road are managed as different links.

  FIG. 5 is a diagram showing the configuration of the cancel operation table 300. The cancel operation table 300 includes a change 321 before and after vibration that is information for specifying a change before and after vibration, and a cancel execution 322 that is information for specifying whether or not to cancel input according to the change 321 before and after vibration. It includes information about the columns of the cancellation execution content 323 that is information for specifying the cancellation execution content and the status example 324 that is information indicating the status of the input. In the present embodiment, records 301 to 309 including information corresponding to these columns are stored in advance.

  For example, the cancel operation table 300 in this embodiment includes a record including the following information. In the following, the information of the change 321 before and after vibration, the cancel execution 322, the cancel execution content 323, and the situation example 324 is displayed in that order for the contents of each record.

  In the record 301, information specifying “contact detection from no contact state to a fixed position”, “Yes”, “ignore contact detection event and contact disconnection event”, and “wrong press during button search” is stored. ing. In the record 302, “contact detection from no contact state to a fixed position and contact no state”, “Yes”, “ignore contact detection event and contact disconnection event”, and “wrong press during button search” are specified The information to be stored is stored. The record 303 stores information for specifying “from a contact detection state at a fixed position to no contact state”, “Yes”, “ignore contact disconnection event”, and “mis-release during drag operation”. In the record 304, information for specifying “contact (drag) detection whose position changes from no contact”, “Yes”, “ignore position change event before and after vibration”, and “wrong scroll during drag operation” is stored. Has been.

  Also, in the record 305, information for specifying “contact detection in which the position changes from contact with a fixed position”, “Yes”, “ignore position change event”, and “wrong scroll during pressing operation” is stored. Yes. The record 306 stores information for specifying “contact detection whose position changes”, “Yes”, “ignore position change event after vibration”, and “wrong scroll during scrolling”. The record 307 stores information for specifying “detection of no contact from contact state whose position changes”, “Yes”, “ignore contact disconnection event”, and “mis-release during scrolling”. In the record 308, information for specifying “contact detection from a non-contact state to a fixed position for a long time”, “Yes”, “ignore contact detection event and contact disconnection event”, and “wrong pressing during button search” Is stored. The record 309 stores information for specifying “from a contact detection state for a long time to a non-contact state detection”, “No”, “-(not canceled)”, and “normal release”.

  That is, it can be said that the cancel operation table 300 defines an event to be canceled according to the touch position before and after the vibration is detected and the touch type. For example, when touching a button different from the button intended for selection by vibration (a contact detection event and a contact disconnection event occur), etc., by ignoring the contact detection event and the contact disconnection event related to the touch, It can be said that the touch operation is defined not to be accepted as an input.

  Returning to FIG. The voice input / output device 4 includes a microphone 41 as a voice input device and a speaker 42 as a voice output device. The microphone 41 acquires sound outside the navigation device 100 such as a voice uttered by a user or another passenger.

  The speaker 42 outputs a message to the user generated by the arithmetic processing unit 1 as an audio signal. The microphone 41 and the speaker 42 are separately arranged at a predetermined part of the vehicle. However, it may be housed in an integral housing. The navigation device 100 can include a plurality of microphones 41 and speakers 42.

  The input device 5 is a device that receives an instruction from the user through an operation by the user. The input device 5 includes a touch panel 51, a dial switch 52, and other hardware switches (not shown) such as scroll keys and scale change keys.

  The touch panel 51 is mounted on the display surface side of the display 2 and can see through the display screen. The touch panel 51 specifies a touch position corresponding to the XY coordinates of the image displayed on the display 2, converts the touch position into coordinates, and outputs the coordinate. The touch panel 51 includes a pressure-sensitive or electrostatic input detection element. Further, the touch panel 51 can detect that the touch has been made, detect that the touched position has changed, and detect that the touched state has changed from a touched state to a non-touched state. It is possible to generate a contact detection event, a position change event, a contact break event, etc. according to each detection. As shown in FIG. 2, which will be described later, each event that has occurred is detected by the pre-input processing unit 104 provided in the arithmetic processing unit 1, and is transferred to the arithmetic processing unit 1.

  The dial switch 52 is configured to be rotatable clockwise and counterclockwise, generates a pulse signal for every rotation of a predetermined angle, and outputs the pulse signal to the arithmetic processing unit 1. The arithmetic processing unit 1 obtains the rotation angle from the number of pulse signals.

  The ROM device 6 includes at least a readable storage medium such as a ROM (Read Only Memory) such as a CD-ROM or a DVD-ROM, or an IC (Integrated Circuit) card. In this storage medium, for example, moving image data, audio data, and the like are stored.

  The vehicle speed sensor 7, the gyro sensor 8, and the GPS receiver 9 are used by the navigation device 100 to detect the current location.

  The vehicle speed sensor 7 is a sensor that outputs a value used to calculate the vehicle speed.

  The gyro sensor 8 is composed of an optical fiber gyro, a vibration gyro, or the like, and detects an angular velocity due to the rotation of the moving body.

  The GPS receiver 9 receives a signal from a GPS satellite and measures the distance between the mobile body and the GPS satellite and the rate of change of the distance with respect to three or more satellites to thereby determine the current location, travel speed, and travel of the mobile body. It measures the direction.

  The FM multiplex broadcast receiver 10 receives an FM multiplex broadcast signal transmitted from an FM broadcast station. FM multiplex broadcasting includes VICS (Vehicle Information Communication System: Registered Trademark) information, current traffic information, regulatory information, SA / PA (service area / parking area) information, parking information, weather information, and FM multiplex general information. As text information provided by radio stations.

  The beacon receiving device 11 receives rough current traffic information such as VICS information, regulation information, SA / PA (service area / parking area) information, parking lot information, weather information, emergency alerts, and the like. For example, it is a receiving device such as an optical beacon that communicates by light and a radio beacon that communicates by radio waves.

  The vibration sensor 12 detects and outputs vibration. As shown in FIG. 3, the vibration sensor 12 in the present embodiment includes an X direction 511 that is the left and right direction of the vehicle 500 to which the navigation device 100 is attached, a Y direction 513 that is the up and down direction, and a Z direction that is the front and rear direction. For the three axes with 512, the occurrence of vibration and the magnitude of vibration in that direction are detected by acceleration or the like. As shown in FIG. 3, the vehicle 500 is equipped with a steering wheel 501 and a display 2, and the display 2 is disposed at a position where the driver can perform a contact operation. In the arrangement state shown in FIG. 3, the information output from the vibration sensor 12 indicates that the vibration in the X direction 511 is relatively large when steering left and right with a curve or the like, and the information in the Z direction 512 during acceleration / deceleration. The vibration becomes relatively large, and the vibration in the Y direction 513 tends to become relatively large when the road surface condition changes.

  FIG. 2 is a diagram illustrating a configuration related to input in the navigation device 100. Information specifying the vibration detected by the vibration sensor 12 is output to the vibration detection unit 105 of the arithmetic processing unit 1, and information related to the vibration is output from the vibration detection unit 105 to the input preprocessing unit 104. The input preprocessing unit 104 receives information related to the input received from the touch panel 51, that is, event information, performs event cancellation processing or the like according to the vibration information received from the vibration detection unit 105, and information related to effective input. Is output to the input receiving unit 102 of the arithmetic processing unit 1. Note that the input preprocessing unit 104 does not output to the input receiving unit 102 for an event determined to be invalid.

  FIG. 6 is a functional block diagram of the arithmetic processing unit 1. As illustrated, the arithmetic processing unit 1 includes a basic control unit 101, an input receiving unit 102, an output processing unit 103, an input preprocessing unit 104, and a vibration detection unit 105.

  The basic control unit 101 is a central functional unit that performs various processes, and controls other processing units according to the processing content. In addition, information on various sensors, the GPS receiver 9 and the like is acquired, and a map matching process or the like is performed to identify the vehicle orientation that is the direction in which the current location and the front of the vehicle are facing. In addition, the travel history is stored in the storage device 3 for each link by associating the travel date and time with the position as needed. Furthermore, the basic control unit 101 performs time measurement start, time measurement stop, and time measurement initialization in response to a request from each processing unit, and outputs an elapsed time from the time measurement start as a timer value. In addition, an optimum route (recommended route) connecting the current location or the starting point instructed by the user and the destination is searched, and the user is guided using the speaker 42 and the display 2 so as not to deviate from the recommended route.

  The input receiving unit 102 receives an instruction from the user input via the input preprocessing unit 104 or the microphone 41, and transmits the request content to the basic control unit 101.

  The output processing unit 103 receives screen information to be displayed, converts it into a signal for drawing on the display 2, and instructs the display 2 to draw.

  The input preprocessing unit 104 receives information related to the input received from the touch panel 51, that is, event information, performs an event exclusion (cancellation) process or the like according to the vibration information received from the vibration detection unit 105, and is effective. Information related to the input is output to the input receiving unit 102 of the arithmetic processing unit 1.

  The vibration detection unit 105 receives an output of information specifying the vibration detected by the vibration sensor 12 and outputs information related to the vibration to the input preprocessing unit 104. Specifically, the vibration detection unit 105 receives acceleration information that is information for identifying vibrations in the X-axis, Y-axis, and Z-axis directions detected by the vibration detection unit 105, and receives the input preprocessing unit 104. In addition to outputting information specifying the vibration amount, information specifying the change in the vibration amount, for example, a value obtained by time differentiation of the acceleration is specified and output to the vibration detecting unit 105. In the following, in the present embodiment, information on acceleration output from the vibration detection unit 105 is referred to as vibration amount, and information obtained by time-differentiating acceleration is referred to as vibration change amount.

  The functional units of the arithmetic processing unit 1 described above, that is, the basic control unit 101, the input receiving unit 102, the output processing unit 103, the input preprocessing unit 104, and the vibration detection unit 105 are read and executed by the CPU 21 by reading and executing predetermined programs. Built. Therefore, the RAM 22 stores a program for realizing the processing of each functional unit.

  In addition, each above-mentioned component is classified according to the main processing content, in order to make an understanding easy the structure of the navigation apparatus 100. FIG. Therefore, the present invention is not limited by the way of classifying the components and their names. The configuration of the navigation device 100 can be classified into more components depending on the processing content. Moreover, it can also classify | categorize so that one component may perform more processes.

  Each functional unit may be constructed by hardware (ASIC, GPU, etc.). Further, the processing of each functional unit may be executed by one hardware or may be executed by a plurality of hardware.

  [Description of Operation] Next, the operation of the navigation apparatus 100 will be described. FIG. 7 is a flowchart of the input preprocessing. This flow is started when the navigation device 100 starts operation.

  First, the input preprocessing unit 104 acquires an input signal from the touch panel 51 mounted on the display 2 (step S001).

  Then, the input preprocessing unit 104 identifies an input operation and generates an event (step S002). Specifically, the input preprocessing unit 104 generates an event according to a predetermined signal pattern based on the signal acquired in step S001. For example, the input preprocessing unit 104 generates events such as a contact detection event, a position change event, and a contact break event.

  And the vibration detection part 105 specifies the amount of vibration about each direction of X direction, Y direction, and Z direction (step S003). Specifically, the vibration detection unit 105 receives an output signal (output voltage) from the vibration sensor 12 and determines the vibration amounts in the X direction, the Y direction, and the Z direction according to a predetermined association according to the output voltage. The acceleration (G) value to be indicated is specified.

  Then, the input preprocessing unit 104 determines whether or not the vibration in any direction is greater than or equal to a predetermined value (step S004). Specifically, the input pre-processing unit 104 has a vibration equal to or greater than a predetermined threshold value set in advance in any of the vibration amounts in the X direction, the Y direction, and the Z direction specified in step S003. Determine if there is an amount. If the amount of vibration in any direction is not greater than or equal to the predetermined threshold, the input preprocessing unit 104 advances control to step S009 described later.

  When the vibration amount in any direction is equal to or greater than the predetermined threshold value (in the case of “Yes” in step S004), the input preprocessing unit 104 specifies the vibration change amount (step S005). Specifically, the input preprocessing unit 104 acquires the vibration change amount in each of the X direction, the Y direction, and the Z direction output from the vibration detection unit 105. As described above, the vibration change amount is a time differential value of the vibration amount or the like. That is, when the value of the vibration change amount is equal to or greater than a predetermined value, it can be said that the vibration change is severe.

  Then, the input preprocessing unit 104 determines whether or not the vibration change amount in any direction is greater than or equal to a predetermined threshold (step S006). Specifically, the input preprocessing unit 104 determines whether or not there is a vibration change amount equal to or greater than a predetermined threshold value set in advance in any of the directions among the vibration change amounts acquired in step S004. . If the amount of vibration change in any direction is not greater than or equal to the predetermined threshold value, the input preprocessing unit 104 advances control to step S009 described later.

  When the vibration change amount in any direction is equal to or larger than the predetermined threshold (“Yes” in step S006), the pre-input processing unit 104 performs event cancellation according to the combination of events (step S007). Specifically, the input preprocessing unit 104 identifies a record corresponding to the change 321 before and after vibration in the cancel operation table 300 according to the combination of events generated in step S002, and the cancel execution content 323 of the record. Abandon (cancel) the event identified by.

  Then, the input preprocessing unit 104 determines whether there is an uncancelled event (step S008). Specifically, the input preprocessing unit 104 determines whether or not events that have not been abandoned in step S007 remain among the events that have occurred in step S002. If no uncancelled event remains, the pre-input processing unit 104 returns control to step S001.

  When an uncancelled event remains (in the case of “Yes” in step S008), the input receiving unit 102 receives an input of the remaining event (step S009). Specifically, the input receiving unit 102 receives, from the input preprocessing unit 104, events that have not been canceled in step S007 among the events generated in step S002, and effectively handles them as input information. Then, the input preprocessing unit 104 returns the control to step S001.

  The above is the processing flow of the input preprocessing. According to the pre-input processing, input information to the touch panel 51 can be appropriately canceled according to the type of input when vibration occurs. Therefore, it can be said that the occurrence of erroneous operations can be reduced with a simpler method.

  FIG. 8 is a diagram illustrating a processing flow of a change amount threshold setting process for setting a vibration change amount threshold used in the pre-input processing. In the pre-input processing, when the vibration amount is equal to or greater than a predetermined value, a change amount with respect to time of the vibration amount is obtained, and when the change amount is equal to or greater than a threshold value, the input event is canceled. The threshold value setting process is a change amount threshold value setting process. The change amount threshold value setting process is started when the navigation device 100 is activated.

  First, the input preprocessing unit 104 determines whether or not a vibration of a predetermined level or more continues (step S101). Specifically, the input pre-processing unit 104 receives from the vibration detection unit 105 within the latest predetermined time (for example, within 50 milliseconds when the output period from the vibration detection unit 105 is set to 10 milliseconds). It is determined whether the output vibration amount is in a state in which vibrations of a predetermined level or more continue in any of the X direction, Y direction, and Z direction. If none of the directions is in a state in which the vibration of a predetermined level or more continues, the input preprocessing unit 104 returns the control to step S101.

  In a state in which vibration of a predetermined level or more continues in any one of the X direction, the Y direction, and the Z direction (in the case of “Yes” in step S101), the input preprocessing unit 104 includes a timer. Is activated (step S102). Specifically, the input preprocessing unit 104 requests the basic control unit 101 to start timing.

  Then, the input preprocessing unit 104 sets the change amount threshold according to the timer value (step S103). Specifically, the input preprocessing unit 104 acquires a timer value t, which is an elapsed time, from the basic control unit 101, calculates a change amount threshold Y1 by the following equation (1), and performs input preprocessing as the change amount threshold. Set it to be usable.

  Change threshold Y1 = coefficient p × timer value t + original change threshold Y0 (1)

  In Equation (1), the coefficient p and the original change amount threshold value Y0 are assumed to be predetermined constants, and the coefficient p is assumed to be a value greater than zero.

  That is, according to the equation (1), the change amount threshold Y1 is set to be gradually higher as the change time elapses. This is because it is assumed that when the same vibration continues, the operator gets used to the cancellation and the necessity for cancellation is reduced.

  Then, the pre-input processing unit 104 determines whether or not the vibration of a predetermined level or more is continuing (step S104). Specifically, the input pre-processing unit 104 receives from the vibration detection unit 105 within the latest predetermined time (for example, within 50 milliseconds when the output period from the vibration detection unit 105 is set to 10 milliseconds). It is determined whether the output vibration amount is in a state in which vibrations of a predetermined level or more continue in any of the X direction, Y direction, and Z direction. If the vibration of a predetermined level or more continues in any direction, the input preprocessing unit 104 returns the control to step S103.

  When any vibration in the X direction, the Y direction, or the Z direction does not continue to exceed a predetermined level (“No” in step S104), the input preprocessing unit 104 stops the timer. And reset (step S105). Specifically, the input preprocessing unit 104 requests the basic control unit 101 to stop and initialize the timing.

  Then, the input preprocessing unit 104 sets the original change amount threshold Y0 as the change amount threshold Y1 (step S106). That is, the input preprocessing unit 104 returns the change amount threshold increased according to the elapsed time to the basic value. Then, the input preprocessing unit 104 returns the control to step S101.

  The above is the process flow of the change amount threshold setting process. According to the change amount threshold value setting process, when the vibration continues, the change amount threshold value can be gradually set higher according to the elapsed time.

  The first embodiment of the present invention has been described above.

  According to the first embodiment of the present invention, the navigation device 100 can reduce the occurrence of erroneous operations with a simpler method. More specifically, the navigation apparatus 100 can avoid erroneous input during vibration by a simpler method.

  The present invention is not limited to the first embodiment. The first embodiment described above can be variously modified within the scope of the technical idea of the present invention. For example, in the input pre-processing in the first embodiment, an event generated from the input information is canceled according to the type of the generated event, but the present invention is not limited to this. You may make it cancel the input information before and behind the time of a vibration generating, without generating. By transforming in this way, the amount of calculation processing is smaller and the responsiveness can be improved.

  In the first embodiment, the vibration is detected in the three directions of the X direction, the Y direction, and the Z direction, but the present invention is not limited to this. In other words, the detection may be performed by narrowing down the vibration in the vertical direction that is difficult to predict. By doing in this way, a vibration sensor can be made simpler.

  In the first embodiment, event generation and event cancellation are realized in one processing flow. However, the present invention is not limited to this. For example, a plurality of synchronized processes and a plurality of synchronized threads are used. May be processed in parallel.

  Furthermore, you may combine all or some of each invention technique described as said 1st embodiment and its modification.

  The present invention has been described based on the first embodiment.

  In the above embodiment, the example in which the present invention is applied to the in-vehicle navigation device has been described. However, the present invention is not limited to the in-vehicle navigation device, and can be applied to all input devices used in a vibration environment.

DESCRIPTION OF SYMBOLS 1 ... Arithmetic processing part, 2 ... Display, 3 ... Memory | storage device, 4 ... Voice output device, 5 ... Input device, 6 ... ROM device, 7 ... Vehicle speed sensor 8 ... Gyro sensor, 9 ... GPS receiver, 10 ... FM multiplex broadcast receiver, 11 ... Beacon receiver, 12 ... Vibration sensor, 21 ... CPU, 22 ... RAM, 23 ... ROM, 24 ... I / F, 25 ... bus, 41 ... microphone, 42 ... speaker, 51 ... touch panel, 52 ... dial switch, 100. ..Navigation device 101... Basic control unit 102... Input reception unit 103... Output processing unit 104. Link table, 300 ... Cancel operation Buru

Claims (1)

A vibration detecting means for detecting and outputting a vibration amount in three axes and a change in the vibration amount ;
Contact accepting means for detecting and accepting contact;
Input receiving means for receiving input information;
When the vibration detection means detects vibration, an input pre-processing means that passes part of the contact received by the contact reception means as input information to the input reception means,
Equipped with a,
The input preprocessing means includes
When the vibration amount detected by the vibration detection means is equal to or greater than a predetermined vibration amount, and the change in the vibration amount is equal to or greater than a predetermined threshold value, the input is made as input information by excluding a part of the contact. Hand it over to the receiving means,
When the change in the vibration amount is continued for a predetermined period or longer, the predetermined threshold for the change in the vibration amount is set higher according to the duration time.
A navigation device characterized by that.

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