DIGITAL TO TIME CONVERTER AND DIGITAL TO TIME CONVERTING METHOD
First Claim
1. A digital to time converter for generating a first output signal and a second output signal separated by a predetermined delay, comprising:
- a first periodic signal generator generating a first periodic signal with a first period;
a second periodic signal generator generating a second periodic signal with a second period;
a periodic signal synchronizer coupled to the first periodic signal generator and the second periodic signal generator and comprising;
a phase detector detecting a phase difference between the first periodic signal and the second periodic signal, and outputting a phase indication signal;
a first output pulse generator, comprising;
a first counter starting a count according to the first periodic signal when the phase indication signal is asserted to indicate that a phase of the first periodic signal coincides with a phase of the second periodic signal, wherein when a first value is counted, the first output pulse generator outputs a pulse as the first output signal; and
a second output pulse generator, comprising;
a second counter starting a count according to the second periodic signal when the phase indication signal is asserted to indicate that a phase of the first periodic signal coincides with a phase of the second periodic signal, wherein when a second value is counted, the second output pulse generator outputs a pulse as the second output signal,wherein the predetermined delay relates to the first value, the second value and a difference between the first period and the second period.
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Accused Products
Abstract
A digital-to-time converter for generating a first and a second output signal separated by a predetermined delay includes first and second periodic signal generators, respectively, generating a first and a second periodic signal, a periodic signal synchronizer detecting a phase difference between the first and the second periodic signals, and first and second output pulse generators, respectively, starting a count of the first and the second periodic signals when a phase of the first periodic signal coincides with a phase of the second periodic signal. When a first value is counted, the first output pulse generator outputs a pulse as the first output signal, and when a second value is counted, the second output pulse generator outputs a pulse as the second output signal.
19 Citations
20 Claims
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1. A digital to time converter for generating a first output signal and a second output signal separated by a predetermined delay, comprising:
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a first periodic signal generator generating a first periodic signal with a first period; a second periodic signal generator generating a second periodic signal with a second period; a periodic signal synchronizer coupled to the first periodic signal generator and the second periodic signal generator and comprising; a phase detector detecting a phase difference between the first periodic signal and the second periodic signal, and outputting a phase indication signal; a first output pulse generator, comprising; a first counter starting a count according to the first periodic signal when the phase indication signal is asserted to indicate that a phase of the first periodic signal coincides with a phase of the second periodic signal, wherein when a first value is counted, the first output pulse generator outputs a pulse as the first output signal; and a second output pulse generator, comprising; a second counter starting a count according to the second periodic signal when the phase indication signal is asserted to indicate that a phase of the first periodic signal coincides with a phase of the second periodic signal, wherein when a second value is counted, the second output pulse generator outputs a pulse as the second output signal, wherein the predetermined delay relates to the first value, the second value and a difference between the first period and the second period. - View Dependent Claims (2)
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3. A digital to time converter for generating a first output signal and a second output signal separated by a predetermined delay, comprising:
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a first periodic signal generator generating a first periodic signal with a first period according to a reference signal; a second periodic signal generator generating a second periodic signal with a second period according to the reference signal; a first output pulse generator, comprising; a first counter starting a count according to the first periodic signal, wherein when a first value is counted, the first output pulse generator outputs a pulse as the first output signal; and a second output pulse generator, comprising; a second counter starting synchronously with the first counter to count according to the second periodic signal, wherein when a second value is counted, the second output pulse generator outputs a pulse as the second output signal. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A digital to time converter for generating a first output signal and a second output signal separated by a predetermined delay, comprising:
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a first periodic signal generator generating a first periodic signal with a first period according to a reference signal; a second periodic signal generator generating a second periodic signal with a second period according to the reference signal; a first output pulse generator, comprising; a first flip-flop comprising a clock input terminal coupled to the first periodic signal generator and outputting a pulse as the first output signal according to the first periodic signal, and a second output pulse generator, comprising; a counter starting a count according to the second periodic signal, wherein when the counter has counted a value, the second output pulse generator outputs a pulse as second output signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification