Matsushita Electric Works, Ltd.

Kaname Okuno

Katsuya Tsukamoto

Toshio Abiko

Kozo Kawai

Yoshinobu Sakamura

Hiroo Inoue

Hirowo Inoue

Iwakuni Ujiyama

A navigation apparatus is provided for surveying a present spot of the apparatus carried by a vehicle or a user with such surveying unit as a global positioning system (GPS), displaying on a display unit a present spot mark by means of latitudinal and longitudinal lines X and Y of the surveyed spot, showing on a guide display unit positions to be in coincidence with the latitudinal and longitudinal lines according to the surveyed spot, and transferring with a writing guide unit the positions of the latitudinal and longitudinal lines shown on the guide display unit onto a map. Then, the user places the apparatus on the map, and the present spot can be optimumly recognized on the map by means of the present spot mark.

Navigation apparatus and navigation process for writing reference

A navigation apparatus is provided for surveying the position of the apparatus with such surveying unit as a global positioning system (GPS), to have respective figures of reference latitudinal and longitudinal lines X and Y displayed on a display device and, at the same time, to have the latitude and longitude of the position to be indicated by a present position mark of the apparatus calculated in accordance with a preliminarily set scale of reduction of a map utilized. Then, the user places the apparatus on the map so that the latitudinal and longitudinal lines X and Y displayed on the apparatus will coincide with corresponding latitudinal and longitudinal lines on the map, and then the present position can be recognized by the user by means of the present position mark of the display device on the map.

Portable navigation apparatus for indicating present position on a map

A planar antenna includes a set of first radiating plate and first power supplying plate in which openings of the former and power supplying terminals of the latter are respectively coupled electromagnetically to each other, and a further set of second radiating plate and second power supplying plate in which openings of the former and power supplying terminals of the latter are respectively coupled electromagnetically to each other. Antenna structure is thereby simplified while improving productivity and wide band wave reception, and allowing two different polarized waves to be received.

Wide-band, dual polarized planar antenna

A planar antenna for linearly polarized waves includes a grounding conductor plate, a power supply circuit plate having a pattern of power supplying circuit of conductor strips each including power supply terminals, and a radiation plate having apertures forming radiation elements, the respective plates being arranged sequentially with an insulating layer interposed between adjacent ones of the plates to separate them to be independent of one another through a predetermined interval, while arranging the power supplying terminals of the power supplying circuit pattern as well as the apertures in the radiation plate so that the respective power supply terminals terminate to be within a contour of the apertures, in a top plan view, whereby the planar antenna makes it possible to receive at a high gain the linearly polarized waves over a wide band.

Planar antenna for linearly polarized waves

A planar antenna includes a grounding conductor plate, a power supply plate having a pattern of power supplying conductor strips each including power supply terminals, and a radiation plate having apertures forming radiation elements, the respective plates being arranged sequentially with an insulating layer interposed between adjacent ones of the plates to separate them to be independent of one another through a predetermined interval, while coupling electromagnetically the respective power supplying terminals of the power supplying conductor pattern on the power supply plate to the radiation elements provided as the apertures in the radiation plate. With this simplified arrangement, the planar antenna makes it possible to receive at a high gain circularly polarized waves over a wide range.

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Kadoma, Japan

Kaname Okuno