POWER CONSUMPTION REDUCTION IN MEDICAL DEVICES EMPLOYING MULTIPLE SUPPLY VOLTAGES AND CLOCK FREQUENCY CONTROL
First Claim
1. A medical device, comprising:
- one or more circuits operable to perform at least one function during a predetermined time period, wherein the predetermined time period extends between a prior time period and a subsequent time period, and further wherein at least one of the circuits is operable for completing the at least one function in a predetermined number of clock cycles; and
a clock source for providing clock signals at a plurality of clock frequencies, the clock source operatively connected to control the at least one circuit at a clock frequency such that substantially the entire predetermined time period is used to perform the at least one function, wherein the function is completed just prior to the subsequent time period.
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Abstract
Power consumption in medical devices is reduced through the operation of circuits at clock speeds of lower levels to adequately complete desired functions during predetermined time periods (e.g., blanking interval, upper rate interval, etc.) just-in-time prior to subsequent required functional processes; by providing supply voltages tailored for various circuits of an integrated circuit; by operating two or more circuits of an integrated circuit at different clock frequencies; by changing the supply voltage level “on the fly” as required by specific circuit timing functions required for various circuitry based on clock frequencies used to control operation of such circuitry; and/or by tailoring back gate bias or adjusting back gate bias “on the fly” for circuits based on the supply voltage level applied to the circuits.
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Citations
59 Claims
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1. A medical device, comprising:
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one or more circuits operable to perform at least one function during a predetermined time period, wherein the predetermined time period extends between a prior time period and a subsequent time period, and further wherein at least one of the circuits is operable for completing the at least one function in a predetermined number of clock cycles; and
a clock source for providing clock signals at a plurality of clock frequencies, the clock source operatively connected to control the at least one circuit at a clock frequency such that substantially the entire predetermined time period is used to perform the at least one function, wherein the function is completed just prior to the subsequent time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20)
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14. A medical device, comprising:
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a plurality of circuits forming a single integrated circuit, wherein each circuit of the plurality of circuits is operable to perform at least one function; and
one or more supply voltage sources operable to provide a plurality of different supply voltages, wherein at least one supply voltage of the plurality of different supply voltages is operatively connected to at least a first circuit of the plurality of circuits, and further wherein at least one different supply voltage is operatively connected to at least a second circuit of the plurality of circuits.
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21. A medical device, comprising:
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processing circuitry for performing at least a first and second function;
a supply voltage source operatively connected to provide a supply voltage to the processing circuitry; and
a voltage regulator connected to the supply voltage source to adjust the supply voltage provided to the processing circuitry such that a first supply voltage level is applied to the processing circuitry during performance of the first function and a second supply voltage level is applied to the processing circuitry during performance of the second function, the second supply voltage level being different from the first supply voltage level. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for conserving power for a medical device, the method comprising the steps of:
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providing one or more circuits operable to perform at least one function during a predetermined time period that extends between a prior time period and a subsequent time period, wherein at least one of the circuits is operable for completing the at least one function in a predetermined number of clock cycles; and
operating the at least one circuit at a clock frequency such that substantially the entire predetermined time period is used to perform the at least one function, wherein the function is completed just prior to the subsequent time period. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method of conserving power in a medical device, the method comprising the steps of:
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providing a plurality of circuits forming a single integrated circuit, wherein each circuit of the plurality of circuits is operable to perform at least one function; and
operating at least a first circuit of the plurality of circuits at a first supply voltage level; and
operating at least a second circuit of the plurality of circuits at a second supply voltage level, wherein the first supply voltage level is different than the second supply voltage level. - View Dependent Claims (44, 45, 46, 47, 48, 49)
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50. A method of conserving power in a medical device, the method comprising the steps of:
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providing processing circuitry operable for performing at least a first and second function;
operating the processing circuitry at a first supply voltage level to perform the first function; and
operating the processing circuitry at a second supply voltage level to perform the second function, wherein the first supply voltage level is different from the second supply voltage level. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59)
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Specification