Abstract: The invention efficiently decreases EMI noise occurring with regard to the entirety of an electronic apparatus with a plurality of clocks as references for the operations. The spread spectrum is applied to the clock used by the largest number of ICs, that is, a display clock from among three types of clocks.

Abstract: An amplifier circuit includes: an amplifier with a CMOS field effect transistor; and a frequency response control circuit that attenuates low frequency portions of a signal output by the amplifier.

Abstract: A wireless communication terminal includes first and second case members coupled together by a coupling portion so that the positional relation therebetween can be changed, an external wireless communication antenna provided at the first case member, an external wireless communication control portion mainly controlling external wireless communication carried out through the external wireless communication antenna, a first internal wireless communication antenna, a first internal wireless communication control portion controlling internal wireless communication carried out through the first internal wireless communication antenna, a display part provided at the second case member, a second internal wireless communication antenna, a second internal wireless communication control portion controlling internal wireless communication carried out through the second internal wireless communication antenna, and an output power control portion controlling the output power of waves transmitted by the internal wireless c

Abstract: A system clock generation module varies an oscillation frequency and outputs a frequency diffused clock as a system clock. A synchronizing signal measurement module measures a synchronizing signal characteristic value, which includes at least a synchronizing signal period and a synchronizing signal cycle corresponding to an input image signal, relative to a measurement clock generated from the system clock as a reference. An image signal analyzing module determines that specification of the input image signal is changed when the observed synchronizing signal characteristic value is out of a predetermined range, while determining that the specification of the input image signal is unchanged when the observed synchronizing signal characteristic value is in the predetermined range. The image signal analyzing module analyzes the input image signal according to a result of the determination. This arrangement of the present invention ensures stable analysis of the specification of the input image signal.

Abstract: The invention efficiently decreases EMI noise occurring with regard to the entirety of an electronic apparatus with a plurality of clocks as references for the operations. The spread spectrum is applied to the clock used by the largest number of ICs, that is, a display clock from among three types of clocks.

Abstract: A system clock generation module varies an oscillation frequency and outputs a frequency diffused clock as a system clock. A synchronizing signal measurement module measures a synchronizing signal characteristic value, which includes at least a synchronizing signal period and a synchronizing signal cycle corresponding to an input image signal, relative to a measurement clock generated from the system clock as a reference. An image signal analyzing module determines that specification of the input image signal is changed when the observed synchronizing signal characteristic value is out of a predetermined range, while determining that the specification of the input image signal is unchanged when the observed synchronizing signal characteristic value is in the predetermined range. The image signal analyzing module analyzes the input image signal according to a result of the determination. This arrangement of the present invention ensures stable analysis of the specification of the input image signal.