Power sparing synchronous apparatus
First Claim
1. An apparatus comprising:
- a synchronous circuit including a first subcircuit powered by a first power plane having a first power plane voltage and a second subcircuit powered by a second power plane having a second power plane voltage;
an error detector operable to detect independent from the first power plane voltage an incidence of a computational error occurring in the first subcircuit;
a controller operable to increase or decrease the first power plane voltage powering the first subcircuit to a different power plane voltage powering the first subcircuit independent of the second power plane voltage based upon the detected incidence of a computational error; and
a power supply configured to electrically couple with a portable power source and operable to provide a selected one of at least two voltages to the first power plane in response to the controller.
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Accused Products
Abstract
Embodiments include a system, an apparatus, a device, and a method. An apparatus includes a synchronous circuit including a first subcircuit powered by a first power plane having a first power plane voltage and a second subcircuit powered by a second power plane having a second power plane voltage. The apparatus also includes an error detector operable to detect an incidence of a computational error occurring in the first subcircuit. The apparatus includes a controller operable to change the first power plane voltage based upon the detected incidence of a computational error. The apparatus also includes a power supply configured to electrically couple with a portable power source and operable to provide a selected one of at least two voltages to the first power plane in response to the controller.
106 Citations
22 Claims
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1. An apparatus comprising:
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a synchronous circuit including a first subcircuit powered by a first power plane having a first power plane voltage and a second subcircuit powered by a second power plane having a second power plane voltage; an error detector operable to detect independent from the first power plane voltage an incidence of a computational error occurring in the first subcircuit; a controller operable to increase or decrease the first power plane voltage powering the first subcircuit to a different power plane voltage powering the first subcircuit independent of the second power plane voltage based upon the detected incidence of a computational error; and a power supply configured to electrically couple with a portable power source and operable to provide a selected one of at least two voltages to the first power plane in response to the controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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decreasing a voltage received at a first power plane from a power supply that includes a portable energy source, the first power plane being a component of a synchronous circuit that includes a first subcircuit powered by the first power plane and a second subcircuit powered by a second power plane having a second power plane voltage; detecting independently from the voltage received at the first power plane an incidence of a computational error occurring in the first subcircuit; and in response to the detected computational error and independent of the second power plane voltage, increasing the voltage received at the first power plane powering the first subcircuit from the power supply that includes a portable energy source. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An apparatus comprising:
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means for decreasing a voltage received at a first power plane from a power supply that includes a portable energy source, the first power plane being a component of a synchronous circuit that includes a first subcircuit powered by the first power plane and a second subcircuit powered by a second power plane having a second power plane voltage; means for detecting independently from the voltage received at the first power plane an incidence of a computational error occurring in the first subcircuit; and means for increasing in response to the detected computational error and independent of the second power plane voltage the voltage received at the first power plane powering the first subcircuit from the power supply that includes a portable energy source.
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Specification