Pioneer Corporation

Seiji Goto

Isao Endo

Kazuaki Tanaka

Kenichiro Yano

Tatsuya Okamoto

Seiji Imada

Daisuke Sakata

Takuya Tsukada

In a position registering apparatus, an acquiring unit acquires traveling state information indicating a traveling state of a mobile object and a position identifying unit specifies the current position of the mobile object, based on the traveling state information and map information. After the current position of the mobile object is identified to be on a road within a predetermined range from a destination set by a destination setting unit and is then identified to be at a place other than the road, if the parking determining unit determines that the mobile object is parked, a registering unit registers, into a storage unit, a deviation point from the road as an entrance point of a parking lot of the destination.

Position registering apparatus, route retrieving apparatus, position registering method, position registering program, and recording medium

The present invention is to provide a navigation device having a function of starting a route re-searching early by predicting a route change of a vehicle from a recommended route.

Navigation device and navigation method

A position registering apparatus includes an acquiring unit that acquires traveling state information concerning a mobile object; a position identifying unit that identifies a current position of the mobile object based on the traveling state information and map information; a parking determining unit that determines whether the mobile object is parked when the current position is identified not be on a road; and a registering unit that registers a point of deviation from the road by the mobile object as an entrance point to a parking lot when the current position that has been identified to be on the road is identified to be not on the road and the mobile object is determined to be parked. The registering unit further registers the current position identified upon the parking determining unit determining that the mobile object is parked, as a parking lot position correlated with the entrance point.

Position registration device, route search device, position registration method, position registration program, and recording medium

A signal acquisition sectionacquires, for example, a vehicle velocity pulse signal, which is generated from a vehicle velocity sensorin accordance with the movement of a vehicle that is a mobile body. A distance information acquisition sectionacquires distance information concerning the movement distance of the vehicle from a GPS receiver. A distance factor computing sectioncomputes a distance factor value based on the acquired vehicle velocity pulse signal and distance information. A change detection sectionthen compares this computed distance factor value and a distance factor reference value stored in a reference value storage sectionto detect a continuous change of the distance factor value. That is, change detection sectiondetects a change of tire outer diameter due to a change of the pneumatic pressure of the vehicle's tire or tire exchange, etc. When the change of tire outer diameter is detected by change detection section, a distance factor correction sectioncorrects the distance factor reference value speedily and appropriately.

DISTANCE FACTOR LEARNING DEVICE, DISTANCE FACTOR LEARNING METHOD, DISTANCE FACTOR LEARNING PROGRAM, RECORDING MEDIUM RECORDING SAID PROGRAM, MOVEMENT CONDITION COMPUTING DEVICE, AND PRESENT POSITION COMPUTING DEVICE

An angular velocity detection device includes an angular velocity detector for delivering a first sensor output corresponding to an angular velocity of a mobile unit; a learning unit for learning a sensitivity coefficient in accordance with the first sensor output and an output provided by a GPS positioning unit; an acceleration detector for delivering a second sensor output corresponding to an acceleration of the mobile unit; a sensitivity coefficient correction unit for determining a corrected sensitivity coefficient in accordance with the sensitivity coefficient and the second sensor output; and an angular velocity converter for multiplying the first sensor output by the corrected sensitivity coefficient to thereby calculate the actual angular velocity of the mobile unit. The angular velocity detection device allows the angular velocity converter to use the corrected sensitivity coefficient to calculate each actual angular velocity of the mobile unit.

Angular velocity detection device

An on-vehicle navigation system is provided with a radio wave positioning apparatus ( ) and a vehicle speed sensor ( ) for a dead reckoning positioning. A method of detecting a vehicle speed pulse drop of a vehicle speed pulse generated by the vehicle speed sensor is provided with: a first calculation process of calculating a first physical quantity of a predetermined type such as a velocity or the like from radio wave positioning data of the radio wave positioning apparatus; a second calculation process of calculating a second physical quantity of the same type as the first physical quantity from the vehicle speed pulse; and a detection process of detecting the vehicle speed pulse drop by using a contradiction caused between the calculated first physical quantity and the calculated second physical quantity as a detection condition.

Method of and apparatus for detecting vehicle speed pulse drop, on-vehicle navigation system, program storage device and computer data signal embodied in carrier wave

A velocity information acquisition section acquires velocity information on the velocity of a vehicle and records this acquired information in a velocity information recording section . A state judgment section judges start and stop states of the vehicle based on state information indicating the start and stop states of the vehicle that was acquired at a state information acquisition section . After this judgment, a minimum output velocity computing section accurately computes, based on the velocity information recorded in velocity information recording section , a minimum output velocity in a period in which a vehicle velocity detection circuit cannot detect velocity information. A movement condition computing section can appropriately compute a relative movement distance or a relative movement velocity of the vehicle based on the state information acquired at state information acquisition section and the minimum output velocity computed at minimum output velocity computing section

Movement condition computing device, method, and program, and recording medium recording said program, and navigation device

A method of detecting an angle is provided with processes of: setting a bias voltage, as a standard voltage, which is an output voltage outputted from an angular velocity sensor ( ) under a predetermined condition; and calculating the angle on the basis of a difference between the output voltage and the set or updated standard voltage. It is further provided with processes of storing time data, which indicate a time of setting or updating the standard voltage, in correspondence with standard voltage data; estimating a value of the bias voltage of the angular velocity sensor at each time between times of setting or updating the standard voltage; and correcting the calculated angle on the basis of a difference between a value of the standard voltage used in the calculation process and the estimated value of the bias voltage.

Method of and apparatus for detecting angular velocity, method of and apparatus for detecting angle, navigation system, program storage device, and computer data signal embodied in carrier wave

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Kawagoe, Japan

Seiji Goto