Method and apparatus for generating multi-phase signal
First Claim
1. An apparatus for generating a plurality of phase signals having different phases, said apparatus comprising:
- a memory that stores a plurality of data segments for defining a period of a single signal;
a selector circuit that, in each of a plurality of segment intervals constituting a phase signal cycle for generating said phase signals, selects from a plurality of data segments defining a period of a single signal stored in said memory a segment for constituting each of said phase signals and delivers the selected segment, wherein;
each of said segment intervals includes a plurality of segment subintervals corresponding to said plurality of phase signals, respectively, andsaid selector circuit includes;
a timing circuit that defines said plurality of segment intervals and said plurality of segment subintervals; and
a reading circuit that reads, for each of said phase signals, said selected segment from said memory during said segment subinterval corresponding to each of said phase signal in each of said segment intervals; and
a generator circuit that generates each of said phase signals using a plurality of said selected segments for each of said phase signals during said plurality of segment intervals, said generator circuit including;
an acquisition circuit that acquires and holds each of said selected segments for said plurality of phase signals from said memory; and
an output circuit that simultaneously outputs from said acquisition circuit each of said selected segments for said plurality of phase signals at the end of each of said segment intervals.
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Abstract
A multi-phase signal generating apparatus is provided for readily generating multiple phase signals. The multi-phase signal generating apparatus comprises a signal data storage which stores a plurality of data segments for determining a predetermined period of one signal. A data segment selector circuit selects segments for constituting the phase signals from a plurality of data segments stored in the signal data storage for determining the predetermined period of a signal in each of a plurality of segment intervals which make up a phase signal cycle for generating a phase signal. Each phase signal generator circuit forms each phase signal using a plurality of selected segments for each phase signal during a plurality of segment intervals.
13 Citations
21 Claims
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1. An apparatus for generating a plurality of phase signals having different phases, said apparatus comprising:
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a memory that stores a plurality of data segments for defining a period of a single signal; a selector circuit that, in each of a plurality of segment intervals constituting a phase signal cycle for generating said phase signals, selects from a plurality of data segments defining a period of a single signal stored in said memory a segment for constituting each of said phase signals and delivers the selected segment, wherein; each of said segment intervals includes a plurality of segment subintervals corresponding to said plurality of phase signals, respectively, and said selector circuit includes; a timing circuit that defines said plurality of segment intervals and said plurality of segment subintervals; and a reading circuit that reads, for each of said phase signals, said selected segment from said memory during said segment subinterval corresponding to each of said phase signal in each of said segment intervals; and a generator circuit that generates each of said phase signals using a plurality of said selected segments for each of said phase signals during said plurality of segment intervals, said generator circuit including; an acquisition circuit that acquires and holds each of said selected segments for said plurality of phase signals from said memory; and an output circuit that simultaneously outputs from said acquisition circuit each of said selected segments for said plurality of phase signals at the end of each of said segment intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of generating a plurality of phase signals having different phases, said method comprising the steps of:
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in each of a plurality of segment intervals constituting a phase signal cycle for generating said phase signals, selecting from a plurality of data segments defining a period of a single signal stored in a memory, a segment for constituting each of said phase signals and delivering the selected segment, wherein; each of said segment intervals includes a plurality of segment subintervals corresponding to said plurality of phase signals, respectively, and selecting a segment includes, for each of said phase signals, reading said selected segment from said memory during said segment subinterval corresponding to each of said phase signals in each of said segment intervals; and generating each of said phase signals using a plurality of said selected segments for each of said phase signals during said plurality of segment intervals by acquiring and holding each of said selected segments for said plurality of phase signals from said memory, and simultaneously outputting each of said selected segments for said plurality of phase signals at the end of each of said segment intervals. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for generating a plurality of phase signals having different phases, said apparatus comprising:
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means for storing a plurality of data segments for defining a period of a single signal; means for selecting, in each of a plurality of segment intervals constituting a phase signal cycle for generating said phase signals, from a plurality of data segments defining a said period of said single signal stored in said memory a segment for constituting each of said phase signals and delivering the selected segment, wherein; each of said segment intervals includes a plurality of segment subintervals corresponding to said plurality of phase signals, respectively, and said means for selecting includes; means for defining each of said segment intervals and said plurality of segment subintervals; and means for reading, for each of said phase signals, said selected segment from said memory during said segment subinterval corresponding to each of said phase signal in each of said segment intervals; and means for generating each of said phase signals using a plurality of said selected segments for each of said phase signals during said plurality of segment intervals, said means for generating each of said phase signals including; means for acquiring and holding each of said selected segments for said plurality of phase signals from said memory; and means for simultaneously outputting from said means for acquiring and holding each of said selected segments for said plurality of phase signals at the end of said segment intervals.
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Specification