Abstract: A token management system for a amusement arcade is capable of always managing tokens even during the business hours of the amusement arcade and temporarily keeping tokens deposited by players. The system has wireless account units and a collecting cart. The wireless account unit is provided for each of game machines and token dispensing machines installed in the amusement arcade, for detecting the number of tokens or coins inserted into a slot of the machine and the number of tokens or coins returned to players through a return mouth of the machine and transmitting the detected numbers to a wireless account unit attached to a management computer of the amusement arcade. Each of the wireless account units is provided with an identification number specific to the corresponding machine. The collecting cart collects tokens and coins from the game machines and token dispensing machines.

Abstract: Recording transactions using a chronological list superimposed on an indexed list. A transaction log of transaction entries is maintained as a data structure logically organized as a chronological list superimposed on an indexed list. In one aspect of the invention, the transaction log is implemented in an element of a telecommunications network. In another aspect of the invention, the transaction log is implemented in a computer system. Preferably, each transaction entry includes a transaction identifier field, a time stamp field, a chronological list pointer field and an indexed list pointer field. A first chronological list pointer points to the oldest transaction entry in the transaction log and a last chronological list pointer points to the latest transaction entry in the transaction log. The chronological list pointer field of a transaction entry points to the next oldest transaction entry. The indexed list includes a number of indexed list entry pointers.

Abstract: Recording transactions using a chronological list superimposed on an indexed list. A transaction log of transaction entries is maintained as a chronological list superimposed on an indexed list. Preferably, each transaction entry includes a transaction descriptor field, a time stamp field, a chronological list pointer field and an indexed list pointer field. A first chronological list pointer points to the oldest transaction entry in the transaction log and a last chronological list pointer points to the latest transaction entry in the transaction log. The chronological list pointer field of a transaction entry points to the next oldest transaction entry. The indexed list includes a number of indexed list entry pointers. Each indexed list entry pointer corresponds to an index and points to a transaction entry with the same index. The indexed list pointer field of a transaction entry points to another transaction entry with the same index.