Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Patent
1988-12-12
1991-03-05
Shoop, Jr., William M.
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
341141, H03M 166
Patent
active
049981072
ABSTRACT:
Control method for obtaining enough blank time available for operations of a CPU other than switching by employing only a single D/A converter is disclosed. Since data to be processed comprise data requiring fast and slow responses, this method makes fast analog signals converted from fast response data to be delivered during every storing cycle through a specified analog switch group and slow analog signals converted from slow response data to be delivered following the fast analog signal during a distributed individual storing cycle through a periodically selected other analog switch group, thereby obtaining enough time available for operations of the CPU other than switching. The CPU operates a specific one of a plurality of analog switch groups every storing cycle and operates each of the remaining switch groups sequentially every storing cycle.
REFERENCES:
patent: 4198622 (1980-04-01), Connolly, Jr. et al.
patent: 4430642 (1984-02-01), Weigand et al.
patent: 4503421 (1985-03-01), Hareyama et al.
patent: 4591832 (1986-05-01), Fling et al.
Iwatsu Electric Company Ltd.
Logan Sharon D.
Shoop Jr. William M.
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