Nissan Motor Company Limited

Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Masayuki Takada

Yoshiyuki Tanaka

Shigeyuki Kiyota

Toyoki Iguchi

Hiroshi Morikawa

Hiroaki Hashimoto

Norimasa Kishi

Yoshinori Aoshima

Yasuyuki Takahashi

Kenichiro Tsuru

Toshiaki Takahashi

Fumio Seto

Masaki Watanabe

Takashi Ueno

Satoru Hirose

Akihiro Machida

Takeshi Akatsuka

Ken Oizumi

Takuo Ishiwaka

Hiroaki Saitou

Norihiro Shinotsuka

Toshikazu Maeshima

Ricardo Wong

A battery control system connected to a battery, which controls charge/discharge at the battery, includes: a current detection unit that measures a current value by detecting a charge/discharge current flowing through the battery; a voltage detection unit that detects a voltage at the battery; a temperature detection unit that detects a temperature at the battery; a temperature history recording unit that records temperature history pertaining to the temperature detected by the temperature detection unit; and a charge/discharge restriction unit that restricts the charge/discharge current in a low-temperature state based upon the temperature history recorded by the temperature history recording unit.

Battery control system and vehicle control system

A battery control system connected to a battery, which controls charge/discharge at the battery, includes: a current detection unit that measures a current value by detecting a charge/discharge current flowing through the battery; a voltage detection unit that detects a voltage at the battery; a temperature detection unit that detects a temperature at the battery; an effective current value calculation unit that calculates, based upon the current value measured by the current detection unit, an effective current value in a predetermined time window; and a charge/discharge restriction unit that imposes a first charge/discharge restriction so as to restrict the charge/discharge current based upon the effective current value calculated by the effective current value calculation unit.

A battery control system connected to a battery, which controls charge/discharge at the battery, includes: a current detection unit that measures a current value by detecting a charge/discharge current flowing through the battery; a voltage detection unit that detects a voltage at the battery; a temperature detection unit that detects a temperature at the battery; an effective current value calculation unit that calculates, based upon the current value measured by the current detection unit, an effective current value in a predetermined time window; a time ratio calculation unit that determines a time ratio indicating a ratio of a length of time over which the effective current value has been in excess of a predetermined allowable value during a predetermined specified time period; and a charge/discharge restriction unit that restricts the charge/discharge current based upon the time ratio determined by the time ratio calculation unit.

A battery control system connected to a battery equipped with an explosion-proofing mechanism for cutting off an electric current when the battery enters an overcharge state, including: a cell voltage detection unit that detects voltage at the battery; a storage unit that stores information pertaining to the battery conditions; an overcharge decision-making unit that makes a decision as to whether or not the battery is in an overcharge state; a storage control unit that engages the storage unit to store information pertaining to the overcharge state when the overcharge decision-making unit decides that the battery is in an overcharge state; and an explosion-proofing decision-making unit that decides that the explosion-proofing mechanism in the battery has actuated if the overcharge information is stored in the storage unit and the cell voltage detected by the cell voltage detection unit is lower than a predetermined lower limit value.

In apparatus and method for delivering road map data, a plurality of road map data are stored in a road map data storage unit, one of the road map data which corresponds to the road map data requested to be delivered from the road map storage unit is retrieved and delivered in response to a request to deliver the road map data to a movable body issued from the same movable body, a delivery history of each road map data is stored, and a charging process for the delivery of the road map data is carried out in such a way as to refer to the delivery history of the road map data stored and to charge an amount of money discounted from a predetermined amount of money at a rate of discount varied in accordance with a degree of an overlap in a case where the road map data presently delivered to the road map data delivery requested movable body includes a portion on which the road map data delivered to the same movable body in the past is overlapped.

Apparatus and method for delivering road map data to movable body

A navigation system includes a map-gain timing judging part to calculate a traveling speed the position of a vehicle detected by a GPS unit A moving distance of the vehicle during the renewal of map is calculated by the traveling speed and a renewal time necessary for gaining the map information from the server of a map information delivery apparatus The system further calculates a traveling direction of the vehicle by the position of the vehicle and also calculates a road distance from the present position of the vehicle to the margin of a map on display. When the road distance agrees with moving distance, it is started to gain a new map information from the server. Thus, when the vehicle reaches the margin of the map on display, the renewal of the map information is completed.

Navigation system for vehicle

In information communication system and method applicable to an in-vehicle networking architecture, at least one first electronic equipment which is enabled to serve another electronic equipment with its function and at least one second electronic equipment which is enabled to make use of a function which another electronic equipment serves are connected to a common communication bus (network). An equipment managing apparatus connected to the common communication bus stores a function serving information representing the function that the first electronic equipment can serve and a making-use-of function information representing the function of which the second electronic equipment can make use. If both contents of the function serving information and the making-use-of function information are coincident with each other, the second electronic equipment makes use of the function of the first electronic equipment.

Information communication system and method applicable to in-vehicle networking architecture

A navigation system stereoscopically displays an area based on altitude information data of the actual terrain of the area, and puts thereon map display components such as roads, place manes and the like to form a stereoscopic map on the screen, which fits the actual view of the area.

Navigation system and memorizing medium for memorizing operation programs used for the same

In apparatus and method for navigating a mobile body such as a vehicle through a road map display image, an angle of a displayed traffic intersection with respect to, for example, a lateral axis crossing the traffic intersection is made coincident with an angle of an actually corresponding traffic intersection. That is to say, display coordinates at a predetermined part (for example, the traffic intersection) of a display image in a form of bird's eye view are modified, the predetermined part meaning a view focusing point or area, so that a scale in a longitudinal direction is made coincident with that in a lateral direction at the predetermined part.

Apparatus and method for navigating mobile body using bird's eye view on

In an apparatus for controllably supplying visual information for a viewer, an optical system including ocular glasses corresponding to right and left eyes of the driver (viewer) is provided so that images on a pair of liquid crystal televisions are introduced to the pair of ocular glasses to provide a three-dimensional solid image. Two television cameras are installed on a vehicle so as to be faced in the rearward direction with their bodies juxtaposed to each other. When the vehicle is reversed, a reflectivity of a half mirror is maximized so that a rearward scenery can be viewed via the ocular glasses in the form of a solid image. During the forwarding of the vehicle, a forward field of view is produced for a half mirror with a transmissivity of the half mirror maximized.

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Hitachinaka, Japan

Masayuki Takada