BTSC encoder with digital FM modulator feature
OwnerLuciano Zoso, Allan Chin +1inventors
InventorsLuciano Zoso, Allan Chin, David Lester
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Abstract
A digital BTSC (Broadcast Television Systems Committee) encoder (52) featuring integrated digital FM modulation comprises a digital BTSC audio processor (78) and a digital FM modulator (82). The digital BTSC audio processor module (78) is responsive to a left audio input signal (64) and a right audio input signal (66) for digitally encoding the left and right audio input signals into a digital composite audio signal (79). The digital FM modulator (82) is responsive to the digital composite audio signal (79) for FM modulating the digital composite audio signal into a digital FM modulated composite audio signal (83) and outputting the digital FM modulated composite audio signal.
Claims20
A digital BTSC (Broadcast Television Systems Committee) encoder featuring integrated digital FM modulation comprising:
- a digital BTSC audio processor module responsive to a left audio input signal and a right audio input signal for digitally encoding the left and right audio input signals into a digital composite audio signal, the digital BTSC audio processor module for outputting the digital composite audio signal;
- and
- a digital FM modulator responsive to the digital composite audio signal for FM modulating the digital composite audio signal into a digital FM modulated composite audio signal and outputting the digital FM modulated composite audio signal.
A digital BTSC (Broadcast Television Systems Committee) encoder featuring integrated digital FM modulation comprising:
- a digital BTSC audio processor module responsive to a left audio input signal and a right audio input signal for digitally encoding the left and right audio input signals into a digital composite audio signal, the digital BTSC audio processor module for outputting the digital composite audio signal;
- an interpolator responsive to the digital composite audio signal for upsampling the digital composite audio signal into an upsampled digital composite audio signal and outputting the upsampled digital composite audio signal;
- a digital FM modulator responsive to the upsampled digital composite audio signal for FM modulating the upsampled digital composite audio signal into a digital FM modulated composite audio signal and outputting the digital FM modulated composite audio signal;
- and
- a digital-to-analog converter responsive to the digital FM modulated composite audio signal for converting the digital FM modulated composite audio signal into an analog FM modulated composite audio signal.
An integrated circuit including a digital BTSC (Broadcast Television Systems Committee) encoder with integrated digital FM modulation, comprising:
- a digital BTSC audio processor module responsive to a left audio input signal and a right audio input signal for digitally encoding the left and right audio input signals into a digital composite audio signal, the digital BTSC audio processor module for outputting the digital composite audio signal;
- and
- a digital FM modulator responsive to the digital composite audio signal for FM modulating the digital composite audio signal into a digital FM modulated composite audio signal and outputting the digital FM modulated composite audio signal.
Dependencies are inferred from the claim text.