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AssigneeMetacube Co.,Ltd.
InventorMasaharu Obayashi
Estimating the term…
A digital filter circuit includes retrieve stream data as a digital signal, and cyclically operate a first phase and a second phase. The circuit includes a short-term storage unit configured to store a local state variable, a long-term storage unit configured to store a global state variable, a first phase synthesizing unit that outputs the digital signal in the first phase under an influence of the local state variable stored in the short-term storage unit, and a second phase synthesizing unit that outputs the digital signal in the second phase under an influence of the global state variable stored in the long-term storage unit, where an output from the first phase synthesizing unit and an output from the second phase synthesizing unit are caused to generate an interference due to a phase shift.
A digital filter circuit configured to retrieve stream data as a digital signal, and to cyclically operate a first phase and a second phase, comprising:
A digital filtering method to be executed by a digital filter circuit configured to retrieve stream data as a digital signal and to cyclically operate a first phase and a second phase, the digital filter circuit comprising a first buffer memory configured to store a local state variable of a first amount of most recent stream data and a second buffer memory configured to store a global state variable of a larger amount of most recent stream data than the first buffer memory, the method comprising:
A non-transitory computer-readable storage medium storing a digital filtering program to be executed by a digital filter circuit configured to retrieve stream data as a digital signal and to cyclically operate a first phase and a second phase, the digital filter circuit comprising a first buffer memory configured to store a local state variable of a first amount of most recent stream data and a second buffer memory configured to store a global state variable of a larger amount of most recent stream data than the first buffer memory, the program causing the digital filter circuit to output the digital signal in the first phase under an influence of the local state variable stored in the first buffer memory, and to output the digital signal in the second phase under an influence of the global state variable stored in the second buffer memory, wherein
Dependencies are inferred from the claim text.