Patent ID: 7134961
Filing Date: 2006-11-14
Classification: A63F

Abstract:
1. An online system having a plurality of client systems operated by players, and a server system connected to the client systems through a network, forming a virtual space through which information about the players is provided for the client systems, wherein: the server system comprises: a generating system that generates update history information including room state data indicating changes in involvement status of the players in the virtual space; an order information generating system that generates order information having a value that increments each time new update history information was generated; a storage system that stores the update history information in association with the order information value generated when the update history information was generated; and a transmitter that transmits, to the client system, only the update history information not yet received, which corresponds to order information values that are subsequent to a current order information value on a client side, and the client system comprises: an order information storage system that stores the current order information value on the client side corresponding to the update history information received from the server system; a transmission requesting system that transmits, to the server system, a request for the update history information not yet received from the server system, which request includes the current order information value on the client side; a receiver that receives the update history information transmitted from the server system, together with the corresponding order information value; an updating system that updates a room state in accordance with the update history information received by the receiver; and an order updating system that causes the order information storage system to store the order information value received by the receiver as the current order information value on the client side.