US20070038364A1 - Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device - Google Patents

Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device Download PDF

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Publication number
US20070038364A1
US20070038364A1 US11/404,600 US40460006A US2007038364A1 US 20070038364 A1 US20070038364 A1 US 20070038364A1 US 40460006 A US40460006 A US 40460006A US 2007038364 A1 US2007038364 A1 US 2007038364A1
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US
United States
Prior art keywords
navigation
navigation device
mode
navigation mode
personal
Prior art date
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Abandoned
Application number
US11/404,600
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English (en)
Inventor
Jae-Myeon Lee
Hyun-Su Hong
Sung-Chul Yang
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HONG, HYUN-SU, LEE, JAE-MYEON, YANG, SUNG-CHUL
Publication of US20070038364A1 publication Critical patent/US20070038364A1/en
Priority to US13/945,532 priority Critical patent/US9316500B2/en
Priority to US15/077,468 priority patent/US9551584B2/en
Priority to US15/376,036 priority patent/US10060748B2/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3626—Details of the output of route guidance instructions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
    • G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
    • G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
    • G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/3407—Route searching; Route guidance specially adapted for specific applications
    • G01C21/3423—Multimodal routing, i.e. combining two or more modes of transportation, where the modes can be any of, e.g. driving, walking, cycling, public transport
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/52—Determining velocity
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3688—Systems comprising multiple parts or multiple output devices (not client-server), e.g. detachable faceplates, key fobs or multiple output screens
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration

Definitions

  • the present invention relates generally to a navigation system supporting vehicle navigation and personal navigation, and in particular, to an apparatus and method for switching a navigation mode between a vehicle navigation mode and a personal navigation mode in a navigation device supporting vehicle navigation and personal navigation.
  • Vehicle navigation systems for example a car navigation system, recognizes a current position of a user's car. It provides an optimal route to a user's desired destination to the user, and guides the user along the optimal route.
  • car navigation calculates the current position of the car using a Global Positioning System (GPS) sensor and a Dead Reckoning (DR) sensor and guides a route from the current position to the destination.
  • GPS Global Positioning System
  • DR Dead Reckoning
  • Personal navigation devices guide a route for a walker, and is similar to car navigation. But unlike car navigation, it requires more accurate position measurement and more detailed route guiding because the speed of the walker is generally slower than that of the car.
  • car navigation and personal navigation perform route guiding using different navigation algorithms. For example, car navigation recognizes a current position of a car by directly integrating outputs of an accelerometer sensor, whereas personal navigation detects steps of a walker to recognize a current position of the walker. For this reason, car navigation and personal navigation use separate dedicated navigation devices for performing different algorithms or are implemented to operate different algorithms separately even when using one navigation device.
  • an apparatus for switching a navigation mode between a vehicle navigation mode and a personal navigation mode in a navigation device includes a personal navigation algorithm for implementing a personal navigation mode, a vehicle navigation algorithm for implementing a vehicle navigation mode, an external device interface for connecting the navigation device and an external device, a speed measuring unit for providing a speed of the navigation device, a step detecting unit for detecting a step according to movement of the navigation device, and a navigation algorithm controller for switching the navigation mode between the vehicle navigation mode and the personal navigation mode.
  • the switching of the navigation mode is done according to whether the navigation device is mounted in a navigation device holder through the external device interface, whether the speed of the navigation device is greater than a predetermined speed threshold, and whether a step is detected by the step detecting unit.
  • a method for switching a navigation mode between a vehicle navigation mode and a personal navigation mode in a navigation device includes executing a navigation program upon request from a user and determining whether the navigation device is mounted in a navigation device holder, switching the navigation mode to the vehicle navigation mode if the navigation device is mounted in the navigation device holder and acquiring a speed of the navigation device if the navigation device is not mounted in the navigation device holder, switching the navigation mode to the vehicle navigation mode if the speed of the navigation device is greater than a predetermined speed threshold and acquiring a measured acceleration of the navigation device if the speed of the navigation device is less than a predetermined speed threshold, and determining whether a step is detected according to the recognition result, switching the navigation mode to the vehicle navigation mode if a step is not detected, and switching the navigation mode into the personal navigation mode if a step is detected.
  • FIG. 1 is a block diagram of a navigation device according to the present invention.
  • FIG. 2 is a flowchart illustrating mode switching between a vehicle navigation mode and a personal navigation mode according to a first embodiment of the present invention
  • FIG. 3 is a flowchart illustrating mode switching between a vehicle navigation mode and a personal navigation mode according to a second embodiment of the present invention
  • FIG. 4 is a flowchart illustrating mode switching between a vehicle navigation mode and a personal navigation mode according to a third embodiment of the present invention
  • FIG. 5 is a flowchart illustrating mode switching between a vehicle navigation mode and a personal navigation mode according to a fourth embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating a process of setting a speed threshold and a step detected number threshold for a vehicle/personal mode determination according to the present invention.
  • a navigation device performing navigation of a vehicle, such as a car, and personal navigation and automatically switching between vehicle navigation and personal navigation modes is provided.
  • vehicle navigation device and method of the present invention will hereinafter be referred to as a car navigation device and method.
  • FIG. 1 is a block diagram of a navigation device according to the present invention.
  • the navigation device includes a Global Positioning System (GPS) receiver 102 , an accelerometer 104 , a navigation algorithm controller 112 , a user interface 106 , and an external device interface 108 .
  • GPS Global Positioning System
  • the GPS receiver 102 receives a GPS signal from a GPS satellite and provides a GPS speed of the navigation device using position information and time information included in the GPS signal.
  • the accelerometer 104 may be a three-axis accelerometer and measures as well as outputs a speed according to movement of the navigation device.
  • the user interface 106 may be an input device such as a keypad or a touch panel and interfaces with a user. For example, the user interface 106 receives a navigation program execution request from the user and transmits the same to the navigation algorithm controller 112 .
  • the external device interface 108 is a connector between the navigation device and an external device and performs interfacing between the navigation device and an external device in a serial communication manner such as Universal Asynchronous Receiver Transmitter (UART) or Universal Serial Bus (USB).
  • UART Universal Asynchronous Receiver Transmitter
  • USB Universal Serial Bus
  • the external device interface 108 connects and interfaces the navigation device with a navigation device holder 110 or a navigation device charger (e.g., a cigar jack).
  • the navigation algorithm controller 112 which includes a car navigation algorithm 114 and a personal navigation algorithm 116 , executes a corresponding navigation program in response to a navigation program execution request, and determines whether a current mode is a car mode or a personal mode according to a predetermined criterion.
  • the navigation algorithm controller 112 determines whether the current mode is the car mode or the personal mode according to whether the navigation device is mounted in the navigation device holder 110 , the GPS speed provided by the GPS receiver 102 is higher than a predetermined speed, and a step is detected based on a measured acceleration. If the current mode is determined to be the car mode, the navigation algorithm controller 112 switches a navigation mode to a car navigation mode that implements the car navigation algorithm 114 . If the current mode is determined to be the personal mode, the navigation algorithm controller 112 switches a navigation mode to a personal navigation mode that implements the personal navigation algorithm 116 .
  • the car navigation algorithm 114 and the personal navigation algorithm 116 provide position information, speed information, and azimuth information to an algorithm corresponding to the switched mode.
  • the car navigation algorithm 114 and the personal navigation algorithm 116 provide acceleration data logs measured by the accelerometer 104 for 1-10 seconds and position, speed, and azimuth data logs measured by a GPS for 1-10 seconds to an algorithm corresponding to the switched mode.
  • a data rate time unit is used in the car navigation algorithm 114 and the personal navigation algorithm 116 .
  • a data log measured for 1 second is provided when a data rate is higher than 50 Hz and a data log measured for 10 seconds is provided when a data rate is lower than 10 Hz.
  • Previous sensor data is required for calculation of a reference value or a median value of a sensor in the car navigation mode and is required for step detection and pace estimation in the personal navigation mode. Thus, previous sensor data is exchanged in switching between the car navigation mode and the personal navigation mode.
  • the data rate means the data rate of a sensor and is a period of the output of an accelerometer and a terrestrial magnetic sensor.
  • the car navigation algorithm 114 and the personal navigation algorithm 116 require sensor values whose number is greater than a predetermined number, i.e., successive sensor values whose number is greater than a predetermined number.
  • a predetermined number i.e., successive sensor values whose number is greater than a predetermined number.
  • the car navigation algorithm 114 terminates car navigation upon request for switching to the personal navigation mode while performing car navigation and provides position, speed, and azimuth data of the navigation device to the personal navigation algorithm 116 .
  • the personal navigation algorithm 116 subsequently then performs personal navigation from car navigation, using the data provided from the car navigation algorithm 114 .
  • the personal navigation algorithm 116 terminates personal navigation upon request for switching to the car navigation mode while performing personal navigation and provides position, speed, and azimuth data of the navigation device to the car navigation algorithm 114 .
  • the car navigation algorithm 114 subsequently then performs car navigation from personal navigation, using the data provided from the personal navigation algorithm 116 .
  • the navigation device performs mode switching between the car navigation mode and the personal navigation mode according to whether the navigation device is mounted in the navigation device holder 110 .
  • FIG. 2 is a flowchart illustrating mode switching between the car navigation mode and the personal navigation mode according to the first embodiment of the present invention.
  • the navigation device executes a navigation program in response to a navigation program execution request from a user in step 202 .
  • the navigation device determines whether it is mounted in the navigation device holder 110 in step 204 .
  • the navigation device can make a determination using a mechanical method and a message transmission method.
  • the navigation device determines whether it is mounted in the navigation device holder 110 by checking if a button in a portion of the navigation device that physically contacts the navigation device holder 110 is depressed. The navigation device determines that it is mounted in the navigation device holder 110 if the button is depressed. If the button is not depressed, the navigation device determines that it is separated from the navigation device holder 110 .
  • the navigation device transmits a holder ID request message to the navigation device holder 110 through the external device interface 108 and determines whether it is mounted in the navigation device holder 110 by checking if a holder ID or an interrupt message is received as a response to the request message. If the holder ID or the interrupt message is received, the navigation device determines that it is mounted in the navigation device holder 110 . If the holder ID or the interrupt message is not received, the navigation device determines that it is separated from the navigation device holder 110 . However, the navigation device may fail to receive the holder ID or the interrupt message from the navigation device holder 110 . Thus, every 10 seconds the navigation device repetitively transmits the holder ID request message to the navigation device holder 110 .
  • the navigation device Upon receipt of the holder ID or the interrupt message, the navigation device determines that it is mounted in the navigation device holder 110 . When the navigation device is determined to be mounted in the navigation device holder 110 , it continuously transmits the holder ID request message every 30 seconds to the navigation device holder 110 to determine whether it is separated from the navigation device holder 110 .
  • the navigation device If the navigation device is determined to be mounted in the navigation device holder 110 , it switches a navigation mode to the car navigation mode in step 206 and then performs car navigation using the car navigation algorithm 114 .
  • the navigation device If the navigation device is determined to be separated from the navigation device holder 110 , it switches a navigation mode to the personal navigation mode in step 208 and then performs personal navigation using the personal navigation algorithm 116 .
  • the navigation device performs mode switching between the car navigation mode and the personal navigation mode according to whether a GPS speed provided by the GPS receiver 102 is higher than a predetermined speed.
  • FIG. 3 is a flowchart illustrating mode switching between the car navigation mode and the personal navigation mode according to the second embodiment of the present invention.
  • the navigation device executes a navigation program in response to a navigation program execution request from the user in step 402 .
  • the navigation device acquires GPS speed information from the GPS receiver 102 in step 404 .
  • the navigation device determines whether the acquired GPS speed is high in step 406 . In other words, the navigation device determines whether the acquired GPS speed is higher than a predetermined speed threshold.
  • the GPS speed has a limit in the personal navigation mode, since a user will either walk or run while carrying the navigation device. Thus, the navigation device assumes that the maximum speed of a walker is about 25 km/h and sets 25 km/h as a speed threshold. The navigation device determines that the GPS speed is high when the GPS speed is higher than the speed threshold. If the GPS speed is lower than the speed threshold, the navigation device determines that the GPS speed is low.
  • the navigation device determines that the current mode is the car mode and switches a navigation mode to the car navigation mode in step 408 .
  • the navigation device then performs car navigation using the car navigation algorithm 114 . If the GPS speed is not high, the navigation device determines that the current mode is the personal mode and switches a navigation mode to the personal navigation mode in step 410 .
  • the navigation device then performs personal navigation using the personal navigation algorithm 116 .
  • the navigation device performs mode switching between the car navigation mode and the personal navigation mode according to whether a step is detected using an output of the accelerometer 104 .
  • FIG. 4 is a flowchart illustrating mode switching between the car navigation mode and the personal navigation mode according to the third embodiment of the present invention.
  • the navigation device executes a navigation program in response to a navigation program execution request from the user in step 502 .
  • the navigation device acquires an acceleration measured by the accelerometer 104 in step 504 .
  • the navigation device recognizes a step pattern using the measured acceleration in step 506 .
  • a specific waveform greater than 0.5 g of an acceleration measured by the accelerometer 104 is not output as a frequency waveform of the predetermined pattern.
  • the navigation device checks if an acceleration measured by the accelerometer 104 is output as a frequency waveform of the predetermined pattern to recognize a step pattern.
  • a step detection algorithm for recognizing the step pattern may be various well-known step detection methods including a zero-crossing method.
  • the navigation device determines whether a step is detected in step 508 . If a step is not detected, the navigation device determines that the user is not walking and switches a navigation mode to the car navigation mode in step 510 . The navigation device implements the car navigation mode using the car navigation algorithm 114 . If a step is detected, the navigation device determines that the user is walking and switches a navigation mode to the personal navigation mode in step 512 . The navigation device implements the personal navigation mode using the personal navigation algorithm 116 .
  • the navigation device performs mode switching between the car navigation mode and the personal navigation mode according to whether the navigation device is mounted in the navigation device holder 110 , whether a GPS speed provided by the GPS receiver 102 is higher than a predetermined speed, and whether a step is detected using an output of the accelerometer 104 .
  • a navigation mode is likely to be the car navigation mode when the user is on a driveway or an express highway, a reference value for a GPS speed and a reference value for an acceleration measured by the accelerometer 104 for car/personal mode determination are set useful for determination of the car navigation mode. Mode switching between the car navigation mode and the personal navigation mode is performed according to the reference values.
  • FIG. 5 is a flowchart illustrating mode switching between the car navigation mode and the personal navigation mode according to the fourth embodiment of the present invention.
  • the navigation device executes a navigation program in response to a navigation program execution request from the user in step 602 .
  • the navigation device determines whether it is mounted in the navigation device holder 110 in step 604 as described about step 204 with reference to FIG. 2 .
  • the navigation device If the navigation device is mounted in the navigation device holder 110 , it determines that the current mode is the car mode and switches the navigation mode to the car navigation mode in step 620 . The navigation device then performs car navigation using the car navigation algorithm 114 .
  • the navigation device If the navigation device is not mounted in the navigation device holder 110 , it sets a speed threshold ⁇ and a step detected number threshold ⁇ for car/personal mode determination in step 608 .
  • FIG. 6 is a flowchart illustrating a process of setting the speed threshold ⁇ and the step number detection threshold ⁇ for car/personal mode determination according to the present invention.
  • the navigation device detects a user's position in step 702 .
  • the navigation device can detect the user's position using a GPS signal received by the GPS receiver 102 .
  • the navigation device determines whether the user's position is a road way in step 704 . In other words, the navigation device determines whether the user is on a driveway or an express highway. This is because the user is likely to use car navigation when on a road way and is likely to use personal navigation when not on a road way.
  • the navigation device sets the GPS speed threshold a greater than a default value and the step detected number threshold ⁇ less than a default value. In other words, when the user is on a road way, the navigation device sets the GPS speed threshold ⁇ and the step detected number threshold ⁇ to values useful for determination of the car navigation mode.
  • the navigation device sets the GPS speed threshold ⁇ and the step detected number threshold ⁇ to default values in step 708 or may set the GPS speed threshold ⁇ less than a default value and the step detected number threshold ⁇ greater than a default value usefully for determination of the personal navigation mode.
  • the navigation device After setting the GPS speed threshold ⁇ and the step detected number threshold ⁇ , the navigation device acquires GPS speed information from the GPS receiver 102 in step 610 .
  • the navigation device determines whether the acquired GPS speed is greater than the set GPS speed threshold ⁇ in step 612 . If the acquired GPS speed is greater than the set GPS speed threshold ⁇ , it means that the GPS speed is high. Thus, the navigation device determines that the current mode is the car mode and switches a navigation mode to the car navigation mode in step 620 . The navigation device then performs car navigation using the car navigation algorithm 114 .
  • the navigation device determines that the current mode is not the car mode and performs step detection for car/personal mode determination in step 614 . In other words, the navigation device recognizes a step pattern using an acceleration measured by the accelerometer 104 and performs step detection according to the recognition result.
  • the navigation device determines whether the number of detected steps is greater than the set step detected number threshold ⁇ in step 616 . If the number of detected steps is less than the set step detected number threshold ⁇ , the navigation device determines that the user is not walking and switches the navigation mode to the car navigation mode in step 620 . The navigation device then performs car navigation using the car navigation algorithm 114 .
  • the navigation device determines that the user is walking and switches the navigation mode to the personal navigation mode in step 618 .
  • the navigation device then performs personal navigation using the personal navigation algorithm 116 .
  • switching between a car navigation mode and a personal navigation mode is automatically performed in a single navigation device, thereby alleviating inconvenience of requiring the user's manual mode switching.
  • an algorithm provides position, velocity, and azimuth data of the navigation device to another algorithm corresponding to a switched mode.
  • personal navigation is subsequently automatically performed from car navigation or car navigation is subsequently automatically performed from personal navigation.
  • the navigation device automatically switches between the car navigation mode and the personal navigation mode.
  • the user does not need to perform manual mode switching on a way from a departure to a destination.
US11/404,600 2005-05-19 2006-04-14 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device Abandoned US20070038364A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US13/945,532 US9316500B2 (en) 2005-05-19 2013-07-18 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device
US15/077,468 US9551584B2 (en) 2005-05-19 2016-03-22 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device
US15/376,036 US10060748B2 (en) 2005-05-19 2016-12-12 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device

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KR1020050042075A KR100735192B1 (ko) 2005-05-19 2005-05-19 항법 기기에서 차량 항법과 보행자 항법 간의 모드 전환장치 및 방법
KR2005-42075 2005-05-19

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US11/404,600 Abandoned US20070038364A1 (en) 2005-05-19 2006-04-14 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device
US13/945,532 Active 2026-09-15 US9316500B2 (en) 2005-05-19 2013-07-18 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device
US15/077,468 Active US9551584B2 (en) 2005-05-19 2016-03-22 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device
US15/376,036 Active 2026-05-02 US10060748B2 (en) 2005-05-19 2016-12-12 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device

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US15/077,468 Active US9551584B2 (en) 2005-05-19 2016-03-22 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device
US15/376,036 Active 2026-05-02 US10060748B2 (en) 2005-05-19 2016-12-12 Apparatus and method for switching navigation mode between vehicle navigation mode and personal navigation mode in navigation device

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US9551584B2 (en) 2017-01-24
US9316500B2 (en) 2016-04-19
EP1731874A2 (en) 2006-12-13
CN100590385C (zh) 2010-02-17
KR100735192B1 (ko) 2007-07-03
CN1865859A (zh) 2006-11-22
US20160202080A1 (en) 2016-07-14
US10060748B2 (en) 2018-08-28
EP1731874A3 (en) 2010-10-27
US20170089708A1 (en) 2017-03-30

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