Satellite broadcasting system
First Claim
1. A reception terminal (450) comprising:
- reception means for receiving a plurality of right-or left-circularly polarized channel signals; and
channel selection means for selecting circular polarization corresponding to selected channels for the channel signals received by said reception means and outputting the channel signals.
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Abstract
In a broadcasting receiver, to quickly switch channels of the received multiplexed broadcasting signals at a high response speed to improve the convenience for a viewer, when broadcasting signals of a plurality of channels are to be code-division-multiplexed and broadcasted from a ground broadcasting station (BC1, BC2) to a broadcasting receiver (MS) in a service area via a geostationary satellite (SAT), the broadcasting signals are multiplexed and transmitted after matching the spreading code phase between the channels in the ground broadcasting station (BC1, BC2). Alternatively, the spreading code phase difference between the channels of a CDM broadcasting signal arriving from the ground broadcasting station (BC1, BC2) is detected in the geostationary satellite (SAT), and the broadcasting signal is transmitted to the broadcasting receiver (MS) after matching the spreading code phase between the channels on the basis of the detection result.
46 Citations
4 Claims
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1. A reception terminal (450) comprising:
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reception means for receiving a plurality of right-or left-circularly polarized channel signals; and
channel selection means for selecting circular polarization corresponding to selected channels for the channel signals received by said reception means and outputting the channel signals. - View Dependent Claims (2)
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3. A reception terminal (450) comprising:
- reception means for receiving a plurality of vertically or horizontally polarized channel signals;
polarization processing means for selecting linear polarization corresponding to selected channels for the channel signals received by said reception means; and
channel selection means for selecting a desired channel signal from the channel signals for which linear polarization is selected by said polarization processing means. - View Dependent Claims (4)
- reception means for receiving a plurality of vertically or horizontally polarized channel signals;
Specification
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- Resources
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Current AssigneeHideo Kikuchi, Masaru Oka, Masashi Suenaga, Yoichi Koishi, Yukiyoshi Fujimori
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Original AssigneeHideo Kikuchi, Masaru Oka, Masashi Suenaga, Yoichi Koishi, Yukiyoshi Fujimori
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InventorsKikuchi, Hideo, Oka, Masaru, Suenaga, Masashi, Koishi, Yoichi, Fujimori, Yukiyoshi
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Application NumberUS10/352,925Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current370/342CPC Class CodesH04B 7/18526 Arrangements for data linki...
