Abstract: A partition structure of a power train device is provided with: a second differential coupled with an external first differential so as to receive a driving force input to the first differential; a case having a first end facing to the first differential, a second end opposed to the first end and a wall defining the case, the case rotatably housing the second differential and an oil for lubrication of the second differential; and a seal member disposed at the first end of the case and between the first differential and the second differential so as to prevent the oil in the case from mixing with an external fluid existing outside with respect to the case and the seal member.

Abstract: A partition structure of a power train device is provided with: a second differential coupled with an external first differential so as to receive a driving force input to the first differential; a case having a first end facing to the first differential, a second end opposed to the first end and a wall defining the case, the case rotatably housing the second differential and an oil for lubrication of the second differential; and a seal member disposed at the first end of the case and between the first differential and the second differential so as to prevent the oil in the case from mixing with an external fluid existing outside with respect to the case and the seal member.

Abstract: There is provided a point service system that performs customer information analysis and point management in real time at a low cost, using a cellular phone terminal of a customer. Point management and calculation for the customer information analysis are performed inside the cellular phone terminal of the customer. At a time of purchase, purchase data including at least a customer ID is encrypted and input into the cellular phone terminal, and data updating is performed inside the cellular phone terminal. With this arrangement, a shop does not need to bear a communication cost and the system can be introduced at the low cost. The customer does not need to bear the communication cost, either. Since data management by a server is not always necessary, there is no need to disclose privacy data of the customer. The customer thus can readily take part in the system.

Abstract: A data processing method for smart card system provides a highly safe and convenient operation management method in game-linked point system for playing a game on a smart card, especially stressing returned goods process and prevention of illegal operation. After said rights to play game are supplied to a smart card from a shop according to the usage of the card, when the event that the transaction causing the supply of rights to play game is canceled, the designated rights to play game are canceled. When a game is played based on the rights to play game, points are supplied according to the results from playing the game.