Digital signal converter

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control

Reexamination Certificate

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Details

C327S173000, C327S174000

Reexamination Certificate

active

07961020

ABSTRACT:
A digital signal converter (CNV) converts a digital input signal (PCM) into a pulse width modulated signal (PWM), which is a binary signal that comprises pulses of varying width. The digital signal converter can operate in a signal mode and a transition mode. In the transition mode, the digital converter provides the pulse width modulated signal (PWM) by applying an anti-transient noise shaping function (NSH2) to a direct current modification signal (SC). In the signal mode, the digital signal converter provides the pulse width modulated signal by applying a signal noise shaping function (NSH1) to the digital input signal.

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Nielsen K; “PEDEC—A Novel Pulse Referenced Control Method for High Quality Digital PWM Switching Power Amplification”. Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE, Fukuoka, Japan, May 17-22, 1998, New York, NY, USA, IEEE, US. vol. 1, pp. 200-207.

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