Back to results
US 6,124,899 AGranted
Method and apparatus for encoding video color information
AssigneeATI International SRL
InventorsPhilip L. Swan, Antonio A. Rinaldi
Life of this patent
Estimating the term…
Abstract
The invention features furnishing a representation of the quadrature amplitude modulation of two input signals (e.g., U and V video signals) based on the phase of a reference signal (e.g., a color burst reference signal). The two input signals are scaled based on the phase of the reference signal, and the scaling is synchronized to the phase of the reference signal.
Claims19
A method comprising:
- receiving two input signals that are at least partially representative of a video signal;
- receiving an indication of phase of a reference subcarrier signal associated with the video signal;
- generating select signals based on the indication of phase;
- and
- selectively routing the two signals through, or around, multipliers based on the the select signals to provide a representation of quadrature amplitude modulation of the two input signals.
2 more elements
A modulator comprising:
- an output bus providing a representation of the quadrature amplitude modulation of two input signals based on the phase of a subcarrier signal;
- scalar multipliers;
- a switch network;
- and
- selection logic configured to receive an indication of the phase and interact with the switch network to selectively couple the multipliers between the signals and the bus based on the indication.
2 more elements
Dependencies are inferred from the claim text.