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US 12,224,785 B2Granted
Tuner IC
AssigneeSony Semiconductor Solutions Corporation
InventorsToshihiro Yamaguchi, Hiroshi Shono
Life of this patent
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Abstract
The present technology relates to a tuner IC capable of reducing the cost of a demodulation LSI. A tuner includes an IF output terminal configured to output an IF signal of terrestrial broadcasting, a first output terminal configured to output the IF signal or one of BB signals that are output signals of satellite digital broadcasting and have orthogonal phases, and a second output terminal configured to output another of the BB signals. The present technology can be applied to a broadcast receiving system.
Claims3
A tuner integrated circuit (IC) comprising:
- an intermediate frequency (IF) output terminal configured to output an IF signal that is an output signal of terrestrial broadcasting;
- a first output terminal configured to output the IF signal or one of baseband (BB) signals that are output signals of satellite digital broadcasting and have orthogonal phases;
- a second output terminal configured to output another of the BB signals;
- a first switch configured to switch an output destination of the IF signal to the first output terminal or the IF output terminal;
- a second switch configured to switch an output format of the output signal of the terrestrial broadcasting to the IF signal or the BB signals;
- a dummy switch provided at a preceding stage of the second output terminal;
- and
- a control circuit configured to control switching of the first switch according to both a first control signal that controls switching to the terrestrial broadcasting or the satellite digital broadcasting and a second control signal that controls switching of the output destination to the first output terminal or the IF output terminal, the first control signal being set at a time of channel selection, the second control signal being initially set.
5 more elements
Dependencies are inferred from the claim text.