Electric power supply system and electric power supply system for motor vehicle
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embodiment modes
[0049]Hereinafter, embodiment modes of the invention will be described with reference to the accompanying drawings. However, the invention can be carried out in many different modes, and those skilled in the art will appreciate that a variety of modifications can be made to the embodiment modes and their details without departing from the spirit and scope of the invention. Accordingly, the invention should not be construed as being limited to the description of the embodiment modes below. Note that in the following description of structures of the invention, like reference numerals are used to indicate like parts in the drawings.
embodiment mode 1
[0050]A structure of a movable electronic device having a power receiving device of the invention will be described, with reference to the block diagrams of FIGS. 1 and 2.
[0051]A movable electronic device 100 in FIG. 1 includes a power receiving device portion 101 and a power supply load portion 105. The power receiving device portion 101 includes an antenna circuit 102, a signal processing circuit 103, and a battery 104. The signal processing circuit 103 includes a rectifier circuit 106 and a power supply circuit 108.
[0052]Note that the power supply circuit 108 in FIG. 1 supplies electric power to the power supply load portion 105. However, since the configuration of the power supply load portion 105 differs from movable electronic device to movable electronic device, in this embodiment mode, a case where the configuration is that of a portable telephone or a digital video camera is described. Accordingly, the power supply circuit 108 supplies power to a display portion 109 and an ...
embodiment mode 2
[0069]In this embodiment mode, a structure in which a booster antenna circuit (hereinafter referred to as a booster antenna) is included in the structure of the movable electronic device equipped with a power receiving device shown in Embodiment Mode 1 is explained, with reference to drawings. Note that in the drawings used in this embodiment mode, for parts that are the same as those in Embodiment Mode 1, the same numbers as those in Embodiment Mode 1 are used.
[0070]Note that the booster antenna described in this embodiment mode refers to an antenna having a larger size than that of the antenna provided in the power receiving device which receives signals from the power feeder. The booster antenna refers to an antenna that can efficiently transmit a signal that is supplied from the power feeder to the destination of the signal, the power receiving device, by resonating the signal from the power feeder at a frequency band that is used and magnetically coupling the antenna circuit pr...
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