Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 5592389 | Navigation system utilizing audio CD player for data storage An audio navigation system incorporating an audio CD player for playing an audio format CD constituting a data storage medium for the navigation system. The CD may store a database containing map data and navigation information, software including an algo... | 01/07/1997 |
| 5592382 | Directional steering and navigation indicator A navigation and guidance system which directs a user toward a desired destination. Position and steering information are integrated into a single display to allow the user to immediately determine whether the correct course is being traveled, and to info... | 01/07/1997 |
| 5583775 | Navigation apparatus and navigation method A navigation apparatus for a movable body is provided with: a measurement device for measuring a present position of the movable body; a setting device for setting route position information corresponding to a plurality of scheduled route positions which ... | 12/10/1996 |
| 5568390 | Navigation system to be mounted on vehicles A navigation system to be mounted on a vehicle for carrying out a route search and displaying the searched route. Traffic jam information and the like are obtained by an beacon receiver and an input part inputs time as a driving condition. An ECU executes... | 10/22/1996 |
| 5559511 | Vehicle route guidance apparatus for re-searching for a new route when vehicle goes out of route A route guidance section compares the current position provided by a current position determination section and the route provided by a route calculation section for detecting an off-route condition. When the off-route condition is detected, a researching... | 09/24/1996 |
| 5550538 | Navigation system A navigation system mounted on a vehicle computes in advance an optimal route from a starting point to a destination. When the vehicle travels off the optimal route, the navigation system detects an off-route deviation. When an off-route deviation is dete... | 08/27/1996 |
| 5548773 | Digital parallel processor array for optimum path planning The invention computes the optimum path across a terrain or topology represented by an array of parallel processor cells interconnected between neighboring cells by links extending along different directions to the neighboring cells. Such an array is pref... | 08/20/1996 |
| 5544060 | Vehicle mounted navigation system with preview function A navigation system for a vehicle enables an operator to know a calculated optimal path from a starting point to a destination before departure. After the optimal path is calculated, a preview function allows the operator to sequentially view the calculat... | 08/06/1996 |
| 5541858 | Trip log odometer A system for storing beginning and ending odometer readings of a plurality of individual trips made by a vehicle. The odometer readings for each trip are stored individually for future retrieval and use. The system can be directly connected to an odometer... | 07/30/1996 |
| 5528501 | System and method for supplying travel directions I have recognized that for travelers who are familiar with the area of the starting point or destination, i.e., the local areas of a trip, that the first or last several steps of the directions are unnecessary. Therefore, only those steps of the direction... | 06/18/1996 |
| 5526265 | Alternate destination predictor for aircraft Disclosed is a flight management computer modification that provides a pilot of an aircraft with a list of alternate landing destinations at which he can land the aircraft in case of an emergency on board or due to some reason why he cannot land at an int... | 06/11/1996 |
| 5521826 | Travel guiding apparatus for vehicle Disclosed is a vehicle travel guiding apparatus for searching a course having the least cost of line segments between a start and a target points preset on a road map indicated on a display screen according to digitized map data, wherein when a plurality ... | 05/28/1996 |
| 5519619 | Route planning method for hierarchical map routing and apparatus therefor A route planning method, and apparatus, for constructing a route connecting a given origin location and a given destination location from a hierarchical map database having more than one layer, where each layer represents a different level of detail. The ... | 05/21/1996 |
| 5513110 | Navigation system and path search method using hierarchized road data A navigation system in which a more preferable path can be quickly searched for by using map data in a form easy of maintenance, and which is well suited for installation on a vehicle. A map data memory unit stores therein the road data of roads which bel... | 04/30/1996 |
| 5508930 | Vehicle navigation apparatus with new route replanning apparatus Vehicle navigation apparatus (10) calculates an initial route to a destination (52) via connected road segments (55, 59) defined in a road map data base. In response to a can't do-reroute signal, indicative of the vehicle user determining unsuitability of... | 04/16/1996 |
| 5508931 | Route guidance on/off-route state filter The invention provides a route state filter for a vehicle route guidance system for improved tracking of vehicle position with respect to a preselected route. A set of position possibilities are derived by comparing a measured vehicle position to a databa... | 04/16/1996 |
| 5504686 | Mission planning costing surface A mission planning costing surface is formed from digital terrain elevation data of a given geographical region and is for use in routing covert flight paths. To form the costing surface, a hideability map is generated from the digital terrain elevation d... | 04/02/1996 |
| 5502638 | System for obstacle avoidance path planning for multiple-degree-of-freedom mechanism In a system for obstacle avoidance path finding for a multiple-degree-of-freedom mechanism such as a mobile robot moving from a starting point to a goal while avoiding obstacles. Obstacles are defined to be a virtual space having a continuous drag coeffic... | 03/26/1996 |
| 5450325 | Route directions display system A cyclocomputer for use on a bicycle displays route instructions stored in the cyclocomputer, displays two dimensional graphs on the face of the cyclocomputer, and is capable of exporting and importing information to and from other computers or cyclocompu... | 09/12/1995 |
| 5359528 | System for accurately determining the mileage traveled by a vehicle within a state without human intervention A system and method for monitoring and recording the mileage a truck travels within a particular state including a GPS receiver, an odometer, and a memory device which contains state boundary information and a processor for determining on a continual basi... | 10/25/1994 |
| 5229947 | Highway information system A data processing device for providing data related to the categories of services available at locations along a highway in response to operator input is disclosed. The device includes a memory, a keyboard for entering input data identifying a desired ser... | 07/20/1993 |
| 5191532 | Navigation apparatus A navigation apparatus, in which guidance information for travel to a desired destination is outputted upon inputting the desired destination, has an input unit for inputting a desired destination, a memory unit for storing guidance information and destin... | 03/02/1993 |
| 5173709 | Electronic direction finder An electronic direction finder (10) includes a navigation receiver (28) and a compass (32) to generate a bearing signal that indicates that direction of a desired destination. The bearing signal is received by a display driver (34) which causes an electro... | 12/22/1992 |
| 5047946 | Aircraft navigational system and method for guiding an aircraft along intersecting airways An aircraft navigational system which provides flight data information for an aircraft to travel along a first airway to a point of intersection with a second airway and then along said second airway. The system determines whether the point of intersectio... | 09/10/1991 |
| 5021961 | Highway information system A data processing device for providing data related to the categories of services available at locations along a highway in response to operator input is disclosed. The device includes a memory, a keyboard for entering input data identifying a desired ser... | 06/04/1991 |
| 4663718 | Display unit for trip computer A number of displays are made by the combination of numerals and pictographs on an indicator which provides numerical values of information obtained from desired signals selected from display signals wherein units and meanings of the numerical values are ... | 05/05/1987 |
| 4630209 | Audio/visual display system for multiple maps Data for a map of a predetermined area is divided into a plurality of blocks, stored in an external memory medium such as a cassette tape, and loaded into a CPU when deemed necessary. The map as a whole or parts of the map can be arbitrarily selected and ... | 12/16/1986 |
| 4543572 | Road map display system with indications of a vehicle position and destination A road map display system comprises a map memory for storing map image data, a sensor for detecting the travelling distance and travelling direction and outputting a signal representative of the angular offset between the direction of travel and an axis o... | 09/24/1985 |
| 4390948 | Navigation instrument A navigation instrument comprises a first counter for counting travelling distance from a start point, a second counter for counting travelling time from starting, a means for setting a scheduled average vehicle speed, an arithmetic means for calculating ... | 06/28/1983 |
| 4382178 | Electronic trip meter for an automotive vehicle An electronic trip meter for an automotive vehicle comprises a memory circuit to store sector distances between a start point and intermediate and final destinations, a distance presetting circuit to determine alarm points near to and before intermediate ... | 05/03/1983 |
| 4373116 | Voice trip information system for an automotive vehicle A voice trip information system for an automotive vehicle, by which the driver is informed of trip information such as trip time interval, trip distance, amount of fuel consumed, fuel consumption rate and so on, whenever the ignition switch is turned off.... | 02/08/1983 |
| 4371940 | Navigation instrument A navigation instrument for use with a roadway vehicle comprises an arithmetic means producing three data signals showing the average speed of the vehicle, the deviation of the travelling distance from a scheduled one, and the deviation of the travelling ... | 02/01/1983 |
| 4367453 | Automotive driving direction and position indicator apparatus An apparatus for displaying the driving direction and distance coverage of a motor vehicle, wherein a unit distance coverage signal is generated each time the motor vehicle covers a unit distance, a direction signal indicating the present driving directio... | 01/04/1983 |
| 4317106 | Digital indicating installation for motor vehicles A digital indicating installation for vehicles which selectively reproduces several function values within an indicating field; by actuating one of several switches, the reproduction of a first function value is interrupted for a predetermined time and a ... | 02/23/1982 |
| 4312577 | Motor vehicle map display system A map display system for an automobile, in which a map is projected on a screen by optical magnification of a portion of a map disposed on a movable slide. A portion of the slide contains a list of locations such as cities, governmental institutions and p... | 01/26/1982 |
| 4263657 | Electronic trip meter for an automotive vehicle An electronic trip meter for an automotive vehicle comprises an up-down counter, a memory circuit, an adder-subtractor, a display circuit, and other auxiliary circuits. The up-down counter produces a signal indicative of a remaining distance to a goal by ... | 04/21/1981 |
| 4250403 | Electronic trip meter with a correction circuit for an automotive vehicle An electronic trip meter with a correction circuit for an automotive vehicle comprises a counter for producing an ouput signal indicative of a measured distance, an error detector for deriving an error factor of the measured distance with respect to a ref... | 02/10/1981 |
| 4244514 | Electronic trip meter with an alarm for an automotive vehicle An electronic trip meter with an alarm for an automotive vehicle comprises a travelled distance sensing circuit, a memory circuit, a modification circuit, comparators, an alarm, first and second counters, a subtractor, a display circuit, and other auxilia... | 01/13/1981 |
| 4242731 | Navigational information indicator for supplying a vehicle driver with make-turn instructions A navigational information indicator for supplying a vehicle driver with make-turn instructions comprises a first memory for storing each information indicative of each distance travelled by the vehicle as far as a point at which a turn is made, a second ... | 12/30/1980 |
| 4216530 | Navigation instrument for roadway vehicles A navigation instrument for roadway vehicles comprises a first counter for counting pulses each occurring in response to the vehicle moving a predetermined distance to detect the distance travelled from the starting point of a trip, a second counter for c... | 08/05/1980 |
