Mobile receiver
First Claim
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1. A mobile receiver apparatus comprising:
- a directivity variable antenna including a plurality of antenna elements;
an antenna controller connected with the directivity variable antenna for controlling the directivity of said antenna; and
an optimum directivity calculator coupled to the antenna controller for calculating a pattern for the directivity of the antenna by determining (1) whether to align the plurality of antenna elements in one direction so that antenna directivity is in said direction and (2) whether to align at least one of the plurality of antenna elements in a direction different from at least another one of the plurality of antenna elements so that antenna directivity is omni directional;
wherein the optimum directivity calculator includes;
a current position detector for detecting the current position of the mobile receiver apparatus; and
a geographic data storage for storing geographical features which have respective height components in proximity to the current position of the mobile receiver apparatus, at least one stored geographical feature including a height component having a height different than a height of the mobile receiver apparatus; and
the pattern for the directivity of the antenna is further calculated by a combination of the current position of the mobile receiver apparatus and the height component of the at least one stored geographical feature.
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Abstract
A mobile receiver apparatus is provided where its antenna directivity is controllably determined for improving the response to a desired signal as it moves and its surrounding geographical features and thus its environment for signal reception are varied. The mobile receiver apparatus comprises a directivity variable antenna, an antenna controller connected with the directivity variable antenna for conducting a control action to align the directivity with a desired direction, and an optimum directivity calculator connected with the antenna controller for calculating from the current position of a mobile and its surrounding geographical features an optimum pattern of the directivity.
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Citations
6 Claims
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1. A mobile receiver apparatus comprising:
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a directivity variable antenna including a plurality of antenna elements; an antenna controller connected with the directivity variable antenna for controlling the directivity of said antenna; and an optimum directivity calculator coupled to the antenna controller for calculating a pattern for the directivity of the antenna by determining (1) whether to align the plurality of antenna elements in one direction so that antenna directivity is in said direction and (2) whether to align at least one of the plurality of antenna elements in a direction different from at least another one of the plurality of antenna elements so that antenna directivity is omni directional; wherein the optimum directivity calculator includes; a current position detector for detecting the current position of the mobile receiver apparatus; and a geographic data storage for storing geographical features which have respective height components in proximity to the current position of the mobile receiver apparatus, at least one stored geographical feature including a height component having a height different than a height of the mobile receiver apparatus; and the pattern for the directivity of the antenna is further calculated by a combination of the current position of the mobile receiver apparatus and the height component of the at least one stored geographical feature. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification