Spread-spectrum video transport with quadrature amplitude modulation, related transmitter and receiver

TW202634795APending Publication Date: 2026-08-16HYPHY USA INC
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Patent Information

Application Number
TW115117299
Authority / Receiving Office
TW · TW
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-03-09
Filing Date
2022-06-30
Publication Date
2026-08-16

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Abstract

A quadrature amplitude modulation (QAM) transmitter separates an input digital level into I and Q components. In a variation, a QAM transmitter uses every other input digital level as an I or Q component. A QAM receiver receives a QAM modulated signal and outputs digital levels. A QAM transmitter for transmitting analog levels uses a pair of input analog levels as the I and Q components. A QAM receiver receives a QAM modulated signal and outputs analog levels. The digital and analog input levels are produced by encoding N samples using L orthogonal codes.
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