In a tire pressure detecting apparatus, a receiver stores wheel positions detected by a previous wheel position detection as previous wheel positions. The intermediate layer includes insulating portions and metallic portions containing at least one selected from the group consisting of Fe, Co, Ni, Cr and the metallic portions are contacted with the first magnetic layer and the second magnetic layer. 5 \u03bcm, wherein the surface thereof is partially or entirely coated with an electrical insulating material and a method of producing thereof is disclosed. The data streams, once the data symbols thereof are selectably phase-shifted by a phase shifter, are applied by an applier to sending nodes of the respective cells. The invention also relates to a semiconductor apparatus which comprises at least two semiconductor memory apparatuses according to the invention. The sleeve comprises a connecting seat transversely secured at the center portion thereon.