Abstract: A method of an apparatus for diagnosing a memory including a storing module for storing diagnosis information relating to memory errors in a memory to be diagnosed, the apparatus capable of detecting memory errors, the method includes: testing the memory and detecting a memory error for each of a plurality of areas of the memory; dividing at least one of the areas into a plurality of sub-areas upon detection of a memory error in the at least one of the areas; testing the sub-areas and detecting a memory error for each of the plurality of the sub-areas; counting the number of sub-areas where a memory error is detected; and storing information of the number of the sub-areas where a memory error is detected together with information of the at least one of the areas containing the sub-areas into the storing module.

Abstract: A pneumatic tire having on-snow performance improved by increasing traction performance on snow-covered road with maintaining dry grip performance high, and comprising tread surface 2 having at least one circumferential main groove 3 in an outer region 2o facing outward of a vehicle, the circumferential main groove 3 being a straight groove wherein ridge lines 21 at which groove wall surfaces 20 intersect with the tread surface 2 extend straight, each groove wall surface 20 comprising a gently-inclined upper wall surface 20U extending from the ridge line 21 at an angle ?1 of 40 to 60° with respect to a normal line to tread surface 2 and a steeply-inclined lower wall surface 20L extending to groove bottom 22 at an angle ?2 smaller than the angle ?1, and the lower wall surface 20L including projections 23 which are disposed at intervals in the circumferential direction and have a triangular cross section with slope surface 23S extending from lower end Ue of the upper wall surface 20U to groove bottom 22 at an a

Abstract: To enhance uneven wear resistance with achieving higher levels of dry grip performance and wet performance, a tread surface 2 is provided with one circumferential main groove 3 in an outer region 2o thereof directed outward of a vehicle and with first and second circumferential main grooves 4 and 5 in an inner region 2i thereof directed inward of the vehicle, a central region Rc between the circumferential main grooves 3 and 4 is formed into a rib 10 extending continuously in the circumferential direction, an outer shoulder region Ro between the circumferential main groove 3 and TEo is formed into a row of outer blocks 12 defined by inclined main grooves 6, and the outer blocks 12 are provided with inclined sub-grooves 13 having an inclination direction different from that of the inclined main grooves 6, thereby dividing each of the outer blocks 12 into a first block portion 12A on a tire equator side and a second block portion 12B on a ground contact edge side.

Abstract: A pneumatic tire comprises a tread portion provided with a nonlinear rib having an amplitude having a center in the tire axial direction. In a normally loaded condition of the tire, the tread portion has an outside tread edge and an inside tread edge when the camber angle of the tire is 0 degrees. In the normally loaded condition, when the a camber angle of 4 degrees is given to the tire to inline towards the outside tread edge, a foot print shape of the tire has a maximum circumferential length at an axial position MC which is off the tire equator towards the outside tread edge. The nonlinear rib is positioned off the tire equator towards the outside tread edge such that the axial position MC lies within the amplitude of the nonlinear rib, and one of the edges of the nonlinear rib on the outside tread edge side is chamfered.

Abstract: A pneumatic tire is provided with a pair of circumferential grooves (3) arranged in both sides of a tire equator (C), and a plurality of oblique grooves (4) having a steep decline portion (4a) extending to an outer side in a tire axial direction at an angle (q1) between 15 and 45 degree with respect to a tire circumferential direction from a position near the circumferential groove (3), in a tread surface (2). A land portion (B) surrounded by the circumferential groove (3) and the steep decline portion (4a) has an acute corner portion (12) and an obtuse corner portion (13), each being formed between the circumferential groove (3) and the steep decline portion (4a). An outer groove wall surface (6) of the circumferential groove (3) includes a gentle decline wall (6a) in the tread surface side, and a steep decline wall (6b) in the groove bottom side.

Abstract: A method of an apparatus for diagnosing a memory including a storing module for storing diagnosis information relating to memory errors in a memory to be diagnosed, the apparatus capable of detecting memory errors, the method includes: testing the memory and detecting a memory error for each of a plurality of areas of the memory; dividing at least one of the areas into a plurality of sub-areas upon detection of a memory error in the at least one of the areas; testing the sub-areas and detecting a memory error for each of the plurality of the sub-areas; counting the number of sub-areas where a memory error is detected; and storing information of the number of the sub-areas where a memory error is detected together with information of the at least one of the areas containing the sub-areas into the storing module.

Abstract: A pneumatic tire is provided in the tread portion with circumferential grooves, main oblique grooves and auxiliary oblique grooves. The circumferential grooves include: a pair of axially outer grooves disposed one on each side of the tire equator; and at least one axially inner groove between the axially outer grooves, so as to divide the tread portion into at least four circumferential regions including: a pair of axially inner regions between the axially outer grooves and said at least one axially inner groove; and a pair of axially outer regions axially outside the axially outer grooves. The axially inner regions have an axial width L1 of from 0.15 to 0.25 times the critical tread width TW1. The main oblique groove extends across one of the axially inner regions so that the axially outer end is connected with the adjacent axially outer circumferential groove and the axially inner end is connected with the adjacent axially inner groove.

Abstract: A pneumatic tire comprises a tread portion provided with a nonlinear rib having an amplitude having a center in the tire axial direction. In a normally loaded condition of the tire, the tread portion has an outside tread edge and an inside tread edge when the camber angle of the tire is 0 degrees. In the normally loaded condition, when the a camber angle of 4 degrees is given to the tire to inline towards the outside tread edge, a foot print shape of the tire has a maximum circumferential length at an axial position MC which is off the tire equator towards the outside tread edge. The nonlinear rib is positioned off the tire equator towards the outside tread edge such that the axial position MC lies within the amplitude of the nonlinear rib, and one of the edges of the nonlinear rib on the outside tread edge side is chamfered.

Abstract: A pneumatic tire is provided with a pair of circumferential grooves (3) arranged in both sides of a tire equator (C), and a plurality of oblique grooves (4) having a steep decline portion (4a) extending to an outer side in a tire axial direction at an angle (q1) between 15 and 45 degree with respect to a tire circumferential direction from a position near the circumferential groove (3), in a tread surface (2). A land portion (B) surrounded by the circumferential groove (3) and the steep decline portion (4a) has an acute corner portion (12) and an obtuse corner portion (13), each being formed between the circumferential groove (3) and the steep decline portion (4a). An outer groove wall surface (6) of the circumferential groove (3) includes a gentle decline wall (6a) in the tread surface side, and a steep decline wall (6b) in the groove bottom side.

Abstract: A tire having a rotation timing indication hole of the invention has a rotation timing indication hole comprising a multi-step hole provided in a tire tread, and respective steps of the hole have different contours from each other. Since the contour of the hole changes when the tire is worn, the rotation timing of the tire can be recognized.

Abstract: A pneumatic tire includes a carcass folded turned up around a bead core, a belt layer arranged outside of a crown portion of the carcass to have an overlapping portion with the carcass folded portion, a first reinforcing rubber layer arranged between a carcass body portion and the carcass folded portion, and a second reinforcing rubber layer arranged inside the carcass body portion, wherein an overlapping width W1 from an upper end position RE of the first reinforcing rubber layer to an end BE of the belt layer is specified; an overlapping width W2 from an upper end position RF of the second reinforcing rubber layer to the end BE of the belt layer is specified; and thickness RW of the second reinforcing rubber layer on a line TL connecting the end BE of the belt layer and a tread end TE is specified.