Abstract: A display control apparatus includes a receiver configured to receive data via a network, a display controller configured to display information on a display unit based on the data received by the receiver, and a light source controller configured to lower luminance of a light source of the display unit in a predetermined period from a time at which the receiver starts receiving the data to a time at which the display controller completes displaying the information on the display unit, and restore the luminance after the predetermined period has elapsed.

Abstract: An information processing apparatus has a CPU, a clock supply unit configured to supply a clock signal, a CPU idle ratio obtaining unit configured to obtain the idle ratio of the CPU at each predetermined time, a clock control unit configured to determine an operating frequency of the clock signal, and a DMA transfer unit configured to execute a DMA transfer in synchronization with the clock signal supplied from the clock supply unit. The clock control unit controls the operating frequency of the clock signal to the operating frequency determined based on the idle ratio of the CPU if the DMA transfer is not being executed, whereas the clock control unit controls the operating frequency of the clock signal to a predetermined frequency if the DMA transfer is being executed.

Abstract: A portable terminal device includes a supplying unit for supplying, to a CPR, an operating frequency of a clock signal used to operate the CPU, a setting unit for setting one clock level out of a plurality of clock levels assigned with the operating frequency in accordance with an operating state of the CPU and changing an operating frequency stepwise at the clock levels to set the clock level of the operating frequency, a control unit for controlling the operating frequency supplied to the CPU at the clock levels based on settings made by the setting unit, and an input accepting unit for accepting a key input. If the input accepting unit accepts the key input, the setting unit sets the clock level to a predetermined level irrespective of an operating state of the CPU.

Abstract: An information processing apparatus has a CPU, a clock supply unit configured to supply a clock signal, a CPU idle ratio obtaining unit configured to obtain the idle ratio of the CPU at each predetermined time, a clock control unit configured to determine an operating frequency of the clock signal, and a DMA transfer unit configured to execute a DMA transfer in synchronization with the clock signal supplied from the clock supply unit. The clock control unit controls the operating frequency of the clock signal to the operating frequency determined based on the idle ratio of the CPU if the DMA transfer is not being executed, whereas the clock control unit controls the operating frequency of the clock signal to a predetermined frequency if the DMA transfer is being executed.

Abstract: A portable terminal device includes a supplying unit for supplying, to a CPR, an operating frequency of a clock signal used to operate the CPU, a setting unit for setting one cock level out of a plurality of clock levels assigned with the operating frequency in accordance with an operating state of the CPU and changing an operating frequency stepwise at the clock levels to set the clock level of the operating frequency, a control unit for controlling the operating frequency supplied to the CPU at the clock levels based on settings made by the setting unit, and an input accepting unit for accepting a key input. If the input accepting unit accepts the key input, the setting unit sets the clock level to a predetermined level irrespective of an operating state of the CPU.

Abstract: A communication apparatus for authenticating a plurality of people is provided. The communication apparatus includes an input device for obtaining a first set of data for identifying a first person of the people, a receiver for receiving a second set of data for identifying a second person of the people, and a memory for storing a plurality of data for identifying at least two of the people. The communication apparatus includes a controller coupled to the input device, the receiver and the memory. The controller is configured to limit a particular function of the communication apparatus, to compare each of the first set of data and the second set of data with the stored data, and to stop limiting the particular function upon finding out that one and another of the two people identified by the stored data coincide with the first person and the second person, respectively.