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US 8,427,212 B2Granted
Pulse width modulated signal generation method and apparatus
AssigneeIntel Corporation
InventorsGene A. Frederiksen, Annabelle Pratt, Harish K. Krishnamurthy
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Abstract
Various embodiments associated with methods, apparatuses and systems, digital pulse width modulator (DPWM) comprising a counter logic, including a bitwise negator, and a delay-locked loop (DLL), are disclosed herein. The embodiments may potentially have a shorter processing delay, smaller footprint and/or less power consumption. Other embodiments be also be disclosed or claimed.
Claims20
An apparatus comprising:
- a bitwise negator configured to bitwise negate each of a plurality of bits of an integer value indicative of a duty cycle of a pulse width modulated signal;
- and
- a counter coupled to the bitwise negator and configured to produce a counter signal based on a clock signal, wherein the counter and the bitwise negator are further configured to cooperatively facilitate a production of the pulse width modulated signal based on the bitwise negated integer value.
A method comprising:
- bitwise negating each of a plurality of bits of an integer value indicative of a duty cycle of a pulse width modulated signal;
- producing a counter signal based on a clock signal;
- and
- producing the pulse width modulated signal based on the bitwise negated integer value indicative of the duty cycle and the counter signal.
1 more element
A system comprising:
- a processor;
- a voltage source configured to provide a voltage signal to the processor;
- a bitwise negator configured to bitwise negate each of a plurality of bits of an integer value indicative of a duty cycle of a pulse width modulated signal, wherein the duty cycle of the pulse width modulated signal determines an effective voltage received by the load;
- and
- a counter coupled to the bitwise negator, and configured to produce a counter signal based on a clock signal, wherein the counter and the bitwise negator are further configured to cooperatively facilitate a production of the pulse width modulated signal based on the bitwise negated integer value.
2 more elements
Dependencies are inferred from the claim text.