A solid-state imaging device having a light-receiving section that photoelectrically converts incident light includes an insulating film formed on a light-receiving surface of the light-receiving section and a film and having negative fixed charges formed on the insulating film. In one embodiment, the head comb comprises a core body having a bore formed therethrough. In addition, the thin film transistor including the oxide semiconductor may be surrounded by insulating films to be sealed. The memory stores a coverage state indicator for indicating the coverage state of the wireless device. In preferred embodiments the threshold is only about 20 mW. The techniques described herein can utilize two different data sets to accommodate changes in the geographical coverage associated with a cell ID and reduce the probability of putting the cell center estimate in awkward or unlikely locations.