| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an information processing apparatus for suppressing power consumption to the minimum necessary level according to necessary performance when carrying out digital signal processing. <P>SOLUTION: The information processing apparatus includes: a CPU 1; a bus master 2; a bus 3 and a bus 4 to which the CPU 1 and the bus master 2 are connected; a memory 5 connected to the bus 3; a memory 6 connected to the bus 4; and a power supply control part 7 for controlling the power supply of the bus 3 and the bus 4 and the memory 5 and the memory 6. The CPU 1 compares a bus band corresponding to the amount of processing of digital signal processing and a bus band which is being currently used, and when determining that the bus band is additionally necessary, turns on the power supply of the bus 4 and the memory 6 by controlling the power supply control part 7 so that it is possible to increase the bus band, and when determining that it is not necessary to use a plurality of buses, the CPU 1 turns off the power supply of the bus 4 and the memory 6 by controlling the power supply control part 7 so that it is possible to reduce the bus band, and to suppress any unnecessary power consumption. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
