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US 2022/0190872 A1Published application
Encoder and decoder circuits for the transmission of video media using spread spectrum direct sequence modulation
AssigneeHYPHY USA Inc.
InventorRobert Steven HANNEBAUER
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Abstract
The present invention relates generally to video or other media transmission, and more particularly, to encoding and decoding of video media that has been transmitted between a video source and a video sink using spread spectrum direct sequence (SSDS) modulation.
Claims20
A method for applying a Spread Spectrum Direct Sequence (SSDS) code to video data, the method comprising:
- (a) constructing a video vector including N samples of first and second voltage values, the N samples derived from multiple sets of samples representative of multiple pixels respectively;
- (b) modulating each of the first and the second voltage values for the N samples of the video vector using N SSDS chips respectively, each of the modulations involving conditionally either inverting or not inverting the first and second voltage values of the N samples depending on a state of the N SSDS chips respectively;
- and
- (c) generating differential level output signals from an accumulation of the modulated first and second voltage values of the N samples that are conditionally either inverted or not inverted.
1 more element
An encoder for applying a Spread Spectrum Direct Sequence (SSDS) code to video data, the encoder comprising:
- a plurality of multiplier circuits, at least one of the multiplier circuits including and configured to:
- (a) receive a sample including first and second differential voltage values;
- (b) modulate the first and second differential voltage values of the sample by conditionally either inverting or not inverting the first and second differential voltage values depending on a state of a SSDS chip;
- and
- (c) store the modulated first and second differential voltage values of the sample on first and second storage devices;
- and
- an accumulator configured generate a pair of differential level output signals from an accumulation of a plurality of voltage values stored on a plurality of first and second storage devices of the plurality of multiplier circuits respectively,
- the plurality of voltage values derived from the modulation of a plurality of samples received by the plurality of multiplier circuits respectively.
5 more elements
Dependencies are inferred from the claim text.