Electrical computers and digital processing systems: support – Clock – pulse – or timing signal generation or analysis
Reexamination Certificate
2008-01-22
2008-01-22
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Clock, pulse, or timing signal generation or analysis
C713S322000
Reexamination Certificate
active
07321977
ABSTRACT:
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 CPU51, when a source supplying a power supply voltage supplied is switched, it is determined whether or not communication performed by a modem62is in progress. If the communication is in progress, information written in a register211is information indicating that transition of the frequency of the CPU51is not permissible. This information is updated to a frequency transition permissible state. Then, the frequency of the CPU51is transitioned to a suitable frequency for the current situation. After the frequency has been transitioned, the information of the register211is 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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Lee Thomas
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
Tran Vincent T
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