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US 9,571,325 B2Granted
Transmission circuit, transmission method, and transmission system
AssigneeSony Corporation
InventorNorihito Mihota
Life of this patent
Estimating the term…
Abstract
In a transmission circuit that transmits transmission data using an amplitude shift modulation method (ASK modulation method) for changing an amplitude of carrier waves based on the transmission data or a transmission system that uses the transmission circuit, a phase of the carrier waves is changed based on the transmission data to suppress an irradiation of carrier wave components.
Claims15
A transmission circuit, comprising:
- a phase control circuit configured to:
- change a phase of carrier waves based on transmission data,
- wherein the phase of the carrier waves for each bit of the transmission data is changed such that a peak level of a carrier wave component on a frequency axis is lowered;
- and
- output the carrier waves with the changed phase;
- and
- an amplitude shift modulation circuit configured to change an amplitude of the outputted carrier waves based on the transmission data.
4 more elements
A transmission method, comprising:
- changing a phase of carrier waves based on transmission data, wherein the phase of the carrier waves for each bit of the transmission data is changed such that a peak level of a carrier wave component on a frequency axis is lowered;
- outputting the carrier waves with the changed phase;
- and
- changing an amplitude of the outputted carrier waves, using amplitude shift modulation method, based on the transmission data.
1 more element
A transmission system, comprising:
- a transmission circuit;
- and
- a reception circuit configured to receive a signal transmitted from the transmission circuit,
- wherein the transmission circuit includes:
- a phase control circuit configured to:
- change a phase of carrier waves based on transmission data, wherein the phase of the carrier waves for each bit of the transmission data is changed such that a peak level of a carrier wave component on a frequency axis is lowered;
- and
- output the carrier wave with the changed phase;
- and
- an amplitude shift modulation circuit configured to change an amplitude of the outputted carrier waves based on the transmission data.
7 more elements
Dependencies are inferred from the claim text.