Abstract: In the invention, at least a tire outer circumferential side portion of a tread portion is formed of a non-conductive rubber layer. The non-conductive rubber layer is formed by winding and laminating a non-conductive rubber ribbon along a tire circumferential direction. A conductive layer is provided on an outer circumference of the non-conductive rubber ribbon, and the conductive layer continuously and spirally extends along the tire circumferential direction, and is exposed on a tread surface from a bottom surface of the non-conductive rubber layer toward a tire outer circumferential side. Accordingly, an electricity generated in a vehicle body is discharged to a road through the conductive layer. Since the conductive layer is scattered within the non-conductive rubber layer and exposure on the tread surface is preferably secured, it is possible to achieve an excellent conductivity.

Abstract: In the invention, at least a tire outer circumferential side portion of a tread portion is formed of a non-conductive rubber layer. The non-conductive rubber layer is formed by winding and laminating a non-conductive rubber ribbon along a tire circumferential direction. A conductive layer is provided on an outer circumference of the non-conductive rubber ribbon, and the conductive layer continuously and spirally extends along the tire circumferential direction, and is exposed on a tread surface from a bottom surface of the non-conductive rubber layer toward a tire outer circumferential side. Accordingly, an electricity generated in a vehicle body is discharged to a road through the conductive layer. Since the conductive layer is scattered within the non-conductive rubber layer and exposure on the tread surface is preferably secured, it is possible to achieve an excellent conductivity.

Abstract: The invention is directed to a phase locked loop. The phase locked loop comprises a variable frequency divider for performing a fraction frequency division by switching a dividing value having an integer portion and a fraction portion; a memory for storing the fraction portion; and a data converter for adding the integer portion to the fraction portion from the memory based on a clock signal from the variable frequency divider to determine the dividing value to be supplied to the variable frequency divider.

Abstract: The invention is directed to a phase locked loop. The phase locked loop comprises a variable frequency divider for performing a fraction frequency division by switching a dividing value having an integer portion and a fraction portion; a memory for storing the fraction portion; and a data converter for adding the integer portion to the fraction portion from the memory based on a clock signal from the variable frequency divider to determine the dividing value to be supplied to the variable frequency divider.