Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate
2006-05-09
2006-05-09
Le, Huyen (Department: 2644)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
C381S111000, C381S094100, C713S500000, C330S149000, C375S354000, C327S144000
Reexamination Certificate
active
07043313
ABSTRACT:
The present invention synchronizes the clock of the power processing devices and digital signal processing devices in an audio system. The system may include a clock, a digital signal processor (DSP), and a pulse width modulated (PWM) power processing device wherein the digital signal processor and the power processing device would use the clock for their operation. The DSP and the PWM power processing device may use, for operation, the frequency of the clock, or a multiple, integer fraction thereof, such that all clocks are synchronized and all potential sum and/or difference frequencies are predetermined and fall outside the audible frequency range. The may also include a sensor capable of detecting and reporting the clock information either through a metal wire, fiber optic wire, infrared or radio frequency link, which can allow the power processing devices to use the same clock as the DSP.
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Faulk Devona E
Harman International Industries, Inc.
Le Huyen
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