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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