Frequency changer with several output terminals for receiving signals transmitted from satellite
A technology for sending signals and output terminals, which is applied in the field of frequency converters and can solve problems such as high prices
Inactive Publication Date: 2003-08-20
ALPS ALPINE CO LTD
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Problems solved by technology
[0019] Therefore, as mentioned above, the existing frequency converter for receiving satellite transmission signals is connected with two signal receivers at the two output terminals 56a, 56b, so that even when one of them stops running, the frequency converter for receiving satellite transmission signals The frequency converter is in running state, so it needs to be equipped with two voltage regulators 57, 58, so there is a problem of relatively high price
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[0027] Refer to the attached figure 1, the frequency converter for receiving satellite transmission signals constructed according to the present invention will be described. The frequency converter for receiving satellite transmission signals constructed according to the present invention has a received signal amplifying circuit section 1 for respectively implementing amplification for horizontally polarized waves and vertically polarized waves, and divides each amplified received signal into 11.7 GHz as a cut-off frequency A waveform separation circuit section 2 for two-part signals, a filter section 3 for attenuating the image signal in each received signal divided into two, and a frequency converter for performing frequency conversion on the frequency of each received signal output by the filter section 3 The conversion part 4 is an amplifying circuit part 5 for amplifying each received signal after frequency conversion, and a signal selection component 6 for selecting a r...
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A satellite-broadcasting receiving converter includes a plurality of output terminals (6a, 6b) each of which is connected to an external receiver, to each of which a selection control voltage in which a high-frequency voltage is superposed on a DC voltage is sent from the external receiver, and from each of which one type of a receiving signal is selected according to the selection control voltage and output; and a regulator (7) for generating a power-source voltage from the selection control voltage. Since a high-frequency attenuation unit (8, 9) is connected in series between each output terminal and the regulator in the satellite-broadcasting receiving converter, even if a plurality of selection control voltages are input in common to the regulator, the plurality of selection control voltages different from each other do not affect each other and thereby only one regulator is required.
Description
technical field [0001] The present invention relates to a frequency converter for receiving satellite transmission signals, having a plurality of output terminals connected to a signal receiver for receiving satellite television transmission signals (hereinafter simply referred to as signal receiver). Background technique [0002] For example, the broadcasting of satellite TV signals is the broadcasting of signals located in the 10.7GHz to 12.75GHz frequency band, wherein the frequency band from 10.7GHz to 11.7GHz is used to broadcast analog signals, and the frequency range from 11.7 The band from GHz to 12.75GHz is used to broadcast digital signals. Regardless of whether the broadcast is an analog signal or a digital signal, it is broadcast in the form of horizontally polarized waves and vertically polarized waves. In other words, there are four forms of broadcast satellite TV signals: analog broadcast or digital broadcast, and combinations of horizontally polarized waves ...
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IPC IPC(8): H04N5/63H04B1/10H04H40/90H04N7/20
CPCH04H40/90H04N7/20
Inventor 渡部宏一铃木重孝
Owner ALPS ALPINE CO LTD