SHF RECEIVER
PURPOSE:To drive and control the direction of an antenna in a required direction at all times based on the display position, by crossing the display of an angle of elevation and an azimuth angle of an antenna from a direction detecting circuit in two-dimensional manner at an antenna direction displa...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To drive and control the direction of an antenna in a required direction at all times based on the display position, by crossing the display of an angle of elevation and an azimuth angle of an antenna from a direction detecting circuit in two-dimensional manner at an antenna direction display and displaying the direction of the antenna at the cross point. CONSTITUTION:A program transmitted from a broadcast satellite is received at an antenna 12 and converted into signals of UHF band at a frequency converter 18, led to an indoor signal demodulator 15 via a cable 8 and an objective signal is outputted. An antenna detector 14 detects the direction of the antenna and displays the direction on an indicator 16 via the cable. At the beginning of antenna installation, the cross point of pointers A, B representing the angle of elevation and the azimuth is marked by S1, and when the direction of the antenna is changed, an antenna controlling section 17 is operated while observing the pointer of the indicator to drive a drive section 13 and to direct the antenna to the initial position. That is, the cross point of the pointers A, B of the indicator is matched to the initial S1. |
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