| 摘要 |
The present invention relates to an information processing apparatus and method capable of avoiding communication interruptions during communication. In an apparatus having a function of dynamically changing a frequency of a CPU 51 , when a source supplying a power supply voltage supplied is switched, it is determined whether or not communication performed by a modem 62 is in progress. If the communication is in progress, information written in a register 211 is information indicating that transition of the frequency of the CPU 51 is not permissible. This information is updated to a frequency transition permissible state. Then, the frequency of the CPU 51 is transitioned to a suitable frequency for the current situation. After the frequency has been transitioned, the information of the register 211 is updated again into information indicating that transition of the frequency is not permissible. The present invention is applicable to a personal computer having a function of transitioning the CPU frequency.
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