H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 1/66 (2006.01) H03H 11/04 (2006.01) H03M 1/82 (2006.01)
Patent
CA 2260463
In a digital-to-analog converter comprising a pulse-width modulation signal generator for generating a pulse-width modulation signal by pulse-width modulating an actual set value with a count value, and a low-pass filter for removing a high frequency component of the pulse-width modulation signal so as to output an analog signal, a difference between a current target digital value and a previous target digital value are multiplied by a coefficient determined from a time constant of the low-pass filter and a cycle of the target set value, and the multiplied value is added to the previous target set value so as to calculate the actual set value.
Matsushita Electric Industrial Co. Ltd.
Osler Hoskin & Harcourt Llp
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