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US 6,388,432 B2Granted
CPU core voltage switching circuit
AssigneeNEC Corporation
InventorMasanobu Uchida
Life of this patent
Estimating the term…
Abstract
A CPU core voltage switching circuit installed in a personal digital assistant wherein, when the personal digital assistant is using an application software product, a CPU clock frequency is reduced to a half of the frequency used when the personal digital assistant is in an initial start state or a memory data initialization state.
Claims17
A Central Processing Unit, termed hereafter as “CPU”, core voltage switching circuit installed in a personal digital assistant
- wherein, when the personal digital assistant is using an application software product, a CPU clock frequency is reduced to a half of a frequency used when the personal digital assistant is in an initial start state or a memory data initialization state.
A personal digital assistant comprising a CPU core voltage switching circuit,
- said CPU core voltage switching circuit outputting a first CPU clock frequency when the personal digital assistant is in an initial start state or a memory data initialization state and a second lower CPU clock frequency as compared to the first frequency when the personal digital assistant is using an application software product.
Dependencies are inferred from the claim text.