Navitime Japan Co., Ltd.

Sinfonia Technology Co., Ltd.

Ihi Aerospace Co., Ltd.

Keisuke Onishi

Shin Kikuchi

Yusuke Suzuki

Hiroshi Sakamoto

Hitoshi Oyori

Yoshito Ohta

Kenichi Aihara

Takashi Taniyama

Multipliersandoutput values, which are obtained by multiplying a total drive command value Eby first and second gains Gand G, respectively, as first and second drive command values Eand E. Controllersandcontrol first and second actuators (motors)and, respectively, on the basis of the first and second drive command values. The detection values of the drive amounts of the actuators are denoted by Eand E, respectively, and the detection value of the drive amount of a driven body is denoted by E. A gain calculatorcalculates the gains Gand Gon the basis of E, Eand E. An upper limit value of E, which denotes the drive amount of the driven body, is denoted by L. When E, Eor Eapproaches zero, the first gain Gis brought close to (E&#x2212;L/2)/(E&#x2212;L).

Control device for drive device

A 0-axis current calculatorconfigured to calculate a target value of the 0-axis current by setting the current of the open phase to be zero when one of the phases becomes open, or determines that the target value of the 0-axis current is zero when there is no open phase is provided. Based on the target values of the d-axis current and the q-axis current, the target value of the 0-axis current calculated by the 0-axis current calculatorand the d-axis current, the q-axis current, and the 0-axis current transformed by the d-q-0 transformerthe current supplied to each phase of the motor are controlled.

Motor controller

An example navigation system enables searching for an optimum route through a one-time route searching process where several destination or departure locations exist. The navigation system includes a point of interest (POI) attribute information database for accumulating POI attribute information, a network data edit unit and a virtual node setup unit. The navigation system determines whether there is a plurality of POIs in a certain departure location and/or a destination location by making reference to relevant data in the POI attribute information database. If there are several POIs, the virtual node setup unit sets up a virtual node connected to each node of the plurality of POIs through links having identical link cost. The network data edit unit then adds the virtual node to the searching network data, and a route search unit functions to search for routes using the searching network data containing the added virtual node.

Navigation system, route search server, route search method and route search program

A navigation device performs a route guidance based on a route from a current location to a destination, the navigation device being connected to a server for searching the route. A navigation method for the navigation device includes sending a request for searching the route to the server and receiving information on the route from the server. The method also includes measuring an elapsed time from a start of the route guidance, and performing the route guidance based on the information received. The method further includes cutting off a communication with the server and coming into a standby state, upon a determination that the elapsed time measured has reached a predetermined time and when the route is being guided or a current location is being checked, to decrease a bandwidth usage between the navigation device and the server and to reduce a communication charge associated with the bandwidth usage.

Navigation apparatus, server apparatus, navigation method, and navigation program

There is provided an information distribution system capable of distributing a content to a mobile terminal in a predetermined area, distributing content guide information to the mobile terminal, and distributing the content selected by the mobile terminal, within the area. The information distribution system includes an information distribution server, a mobile terminal, and a content DB. The content DB contains content information to be provided to the mobile terminal and information on the area to which the content is provided. The information distribution server distributes the content guide information to the mobile terminal. According to this content guide information, the mobile terminal performs a content distribution request. The information distribution server judges the position of the mobile terminal according to position judgment means. When the mobile terminal is in the distribution area of the content requested, the content is downloaded.

Information distribution system, information distribution server, mobile terminal, and information distribution method

A portable navigation device where a map being displayed on a display section is fixed by performing map stop operation at a portable navigation terminal where an appropriate map is selected and displayed so as to correspond to the speed of movement. A portable navigation terminal () has speed detecting means () for detecting the speed of movement of the terminal, a map data request/acquisition section () for requesting, according to the movement speed detected by the speed detecting mean, different kinds of map data to an information distributing server and acquiring the map data, and an operation section () having a map stop button for stopping, at a desired time point during the movement, change in the kind of map displayed on display means. The portable navigation terminal () further has manual scroll means (), a zoom-in button (), and a zoom-out button () that have the function of the map stop button.

Portable navigation terminal and program

A navigation device performs a route guidance based on a route from a current location to a destination. A communication controller sends a request for searching the route to a server. A guidance-information receiving unit receives information on the route from the server. A time measuring unit measures an elapsed time from a start of the route guidance. A guidance controller performs the route guidance based on the information received. The communication controller commands the navigation device to cut off a communication with the server and to stand by upon a determination that the elapsed time measured has reached a predetermined time and when the route is being guided or a current location is being checked by the guidance controller, to decrease a bandwidth usage between the navigation device and the server and to reduce a communication charge associated with the bandwidth usage.

Navigation device, navigation method, and computer product

A route guide data creation device for acquiring travel data transmitted from a vehicle traveling on a road according to a predetermined travel route and travel time and creating route guide data according to the data. The route guide data creation device acquires the travel data over a predetermined period of time. A travel data processor receives data based on a predetermined input format from the travel data and calculates the arrival time and departure time at/from each stop for each travel routes and for each vehicle ID. A route guide database stores the route guide data including the departure time and the arrival time of each vehicle from/at each stop outputted from the travel data processor.

Route guide data creation device, route guide data creation method, and route guide distribution device

An unoccupied route search system for efficiently searching for a route (transportation means used) to the destination according to presence/absence of an unoccupied set of transportation means. An unoccupied seat route searching system () comprises an operation data DB () storing operation data on operation of transportation means, a search operation data DB () storing operation data for search, reservation information collecting means () for collecting reservation information on transportation means, condition input means () for inputting route search conditions including a seat condition, route search means () for searching transportation means constituting the route according to the reservation information collected by the reservation information collecting means () under the route search condition while referencing the search operation data DB (), and output means () for outputting the results of the route search. The route search means () extracts transportation means having reservation information matching the route search condition from the operation data DB () prior to route search, creates search operation data DB (), and searches for a route.

Unoccupied seat route search system, unoccupied seat route search device, and terminal device

A navigation apparatus includes: a route acquiring unit that acquires a route that connects a departure place and a destination, the route including a plurality of section routes for which different kinds of transportations are used; a guiding unit that performs a guidance based on the route acquire by the route acquiring unit; and a guidance controller that receives an instruction whether to perform the guidance for each of the section routes, and controls the guiding unit to perform the guidance for a section route for which an instruction to perform the guidance is received.

Navigation device, navigation method, and program

A portable guide device is characterized by comprising a transport facility start judgment means for judging that a transport facility has begun to move if a period where an acceleration detected by an acceleration sensor (SN) is included continuously in an acceleration range at the time of starting movement is not shorter than the acceleration continuation time; a distance calculation means for calculating the moving distance of the transport facility according to an acceleration detected by the acceleration sensor (SN) when start of movement of the transport facility is detected; a route information storage means (KCA) for storing route information including information on a distance between stations of the transport facility and station identifying information for identifying each station; and an announcement device control means (KC) for controlling an announcement unit () which announces guidance of a station to a user of the portable guide device according to the station identification information on an entraining station, route information, and the moving distance.

Portable guide device and portable telephone

The map-display-area determining unit determines an area in which a map is to be displayed. The road-information obtaining unit obtains, from map data transmitted from a map-data distributing server, curved-point coordinate information and name information of a traffic route. A map-display-data generating unit determines a display position for each of a character or symbol included in a character/symbol string in the name information so that the character or symbol is positioned along the traffic route without interfering with another character or symbol, and generates map display data for displaying the character or symbol at the determined display position.

Map displaying apparatus, map displaying method, and computer product

Guide points can be grasped by use of a mobile terminal. The mobile terminal comprises search condition transmitting means (KCA) for transmitting data of route searching conditions to a server; searching result receiving means (KCA) for receiving, from the server, route data produced by the server in accordance with the route searching conditions; map request information transmitting means (KCB) for transmitting, to the server, map data transmission request information for requesting a transmission of map data; map data receiving means (KCB) for receiving the map data transmitted from the server; route image producing means (KC) for producing a route image based on a range in which to display on the information display screen () and based on the route data; and guide map image producing means (KC) for producing a route guidance map image by combining, based on the map data, a map image and the route image.

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Tokyo, Japan

Keisuke Onishi