Abstract: A mobile query and response system and method that is based on visual cues, in which a user captures and transmits an image with a networked mobile device such as a cell phone or PDA with image capture and transmission capabilities. Searchable records that include stored image data and response information associated with such data are provided. The image transmitted by the user is used to perform a search of the records, to find in the records an image that matches the transmitted image. If a match is found, the response information associated with the stored image data for the matching image is retrieved, and that response information is used to send a reply to the user.

Abstract: Disclosed is an automatic, self propelled lawn mower that references its position within a cutting area using electronically stored path and terrain information as a primary navigation system, senses a non magnetic, non-current carrying metallic guide path as a secondary navigation system, senses underground metallic references for use as position reference points as a further navigation system, incorporates an ultrasonic obstacle detection system to stop the vehicle if unexpected obstacles are encountered. The vehicle further includes a cow-catcher front bumper arrangement to divert small objects away from the cutting blades, contains bumper switches to shut off the vehicle upon contact with large objects, contains an inclinometer sensor to halt the vehicle during unexpected tilting, incorporates a radio communications link to notify an off-board monitoring system of problems, contains an on-board power generation system using an internal combustion engine, generator, and a battery arrangement.