BTSC encoding method with digital FM modulation
OwnerLuciano Zoso, Allan Chin +1inventors
InventorsLuciano Zoso, Allan Chin, David Lester
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Abstract
A method of digital BTSC (Broadcast Television Systems Committee) encoding featuring integrated digital FM modulation comprises digitally encoding and FM modulating. A left audio input signal (64) and a right audio input signal (66) are digitally encoded into a digital composite audio signal (79) via a digital BTSC audio processor (78). Responsive to the digital composite audio signal (79), a digital FM modulator (82) digitally FM modulates the digital composite audio signal (79) into a digital FM modulated composite audio signal (83).
Claims20
A method of digital BTSC (Broadcast Television Systems Committee) encoding featuring integrated digital FM modulation comprising:
- digitally encoding a left audio input signal and a right audio input signal into a digital composite audio signal;
- and
- responsive to the digital composite audio signal, digitally FM modulating the digital composite audio signal into a digital FM modulated composite audio signal.
A method of digital BTSC (Broadcast Television Systems Committee) encoding featuring integrated digital FM modulation comprising:
- digitally encoding a left audio input signal and a right audio input signal into a digital composite audio signal;
- interpolating the digital composite audio signal by upsampling the digital composite audio signal into an upsampled digital composite audio signal;
- responsive to the upsampled digital composite audio signal, digitally FM modulating the upsampled digital composite audio signal into a digital FM modulated composite audio signal;
- and
- converting the digital FM modulated composite audio signal into an analog FM modulated composite audio signal.
A method of implementing digital BTSC (Broadcast Television Systems Committee) encoding with integrated digital FM modulation on an integrated circuit, comprising:
- digitally encoding a left audio input signal and a right audio input signal into a digital composite audio signal via a digital BTSC audio processor;
- and
- responsive to the digital composite audio signal, digitally FM modulating the digital composite audio signal into a digital FM modulated composite audio signal via a digital FM modulator.
Dependencies are inferred from the claim text.