摘要:
A system for detecting a target substance within a class of explosives and narcotics containing quadrupolar nuclei through the use of nuclear quadrupole resonance (NQR). The system applies an RF signal to a coil to excite the substance under test. If the target material is present, an NQR signal will be picked up by the same coil. That signal is compared with known NQR signals in frequency and amplitude. A signal is displayed in an appropriate way if a threshold value of the NQR signal is equalled or exceeded. The coil is tuned by means of an auto-tune feature. Effective RFI shielding is provided to prevent external contaminating signals from being detected by the coil and to prevent RF signals from escaping from the scanner. The invention also includes the method for performing tests with the system.
摘要:
A system for detecting a target substance within a class of explosives and narcotics containing quadrupolar nuclei through the use of nuclear quadrupole resonance (NQR). The system applies an RF signal to a coil (34) to excite the substance under test. If the target material is present, an NQR signal will be picked up by the same coil, That signal is compared with known NQR signals in frequency and amplitude. A signal is displayed in an appropriate way if a threshold value of the NQR signal is equalled or exceeded. The empty coil is statically tuned by means of adjusting the location or capacitance values, or both, of static tuning capacitors (102) in the coil. The coil is tuned after the specimen is inserted into the coil by means of an auto-tune feature (36). Effective RFI shielding (37) is provided to prevent external contaminating signals from being detected by the coil and to prevent RF signals from escaping from the scanner. The invention also includes the method for performing tests with the system.
摘要:
A method and system for canceling extraneous signals in a nuclear quadrupole resonance (NQR) system used for the detection of explosives and drugs. A specimen is irradiated with a specific sequence of electromagnetic pulses, referred to as a spin-locked inversion mid-echo (SLIME) pulse sequence with each pulse having a specified phase and duration. The pulses are separated by specified time intervals. The SLIME pulse sequence has a single excitation pulse. As a result of the characteristics of the SLIME pulse sequence, if the target substance to be detected is present in the specimen, sets of oppositely-phased NQR echo signals are generated from the target substance. NQR echo signals of one phase are subtracted from NQR echo signals having the opposite phase, rendering a cumulative echo signal, and simultaneously subtracting out the same-phase extraneous signal.
摘要:
A gaming system (10) includes gaming machines (100, 102, 104, 106) arranged to receive input data and to generate output data. A central database (24) stores the input data and the output data. A data processing unit 40 includes a local database (46). Unit 40 polls the gaming machines to obtain the output data over a network (12), stores the output data in the local database, transmits the output data over the network to the central database and arranges the data in a format useable by report generating software, obtains the input data from the central database, and stores the input data in the local database for use by the gaming machines.
摘要:
A gaming machine adapted to print validated tickets for a game player includes a microprocessor for controlling game operation (e.g., slot machine operation) and including a cashout signal input, a network interface coupled to the microprocessor for communicating with a central authority, and a memory in the network interface that stores a pre-loaded ticket validation number received from the central authority. In addition, a ticket printer is coupled to the microprocessor for printing a ticket that includes pending credit indicia and pre-loaded ticket validation indicia in response to a cashout signal on the cashout signal input. After the ticket is printed, the gaming machine obtains a new pre-loaded validation number in preparation for the next ticket printing event.
摘要:
An apparatus for use with a gaming machine is disclosed. The apparatus comprises an electronic processing board that is coupled to first and second data interfaces as well as a ticket printer. The electronic processing board responds to a cashout signal by communicating with the gaming machine via the first data interface, communicating with a computer system via the second data interface, and communicating with the printer to issue a ticket.
摘要:
A gaming machine adapted to print validated tickets for a game player includes a microprocessor for controlling game operation (e.g., slot machine operation) and including a cashout signal input, a network interface coupled to the microprocessor for communicating with a central authority, and a memory in the network interface that stores a pre-loaded ticket validation number received from the central authority. In addition, a ticket printer is coupled to the microprocessor for printing a ticket that includes pending credit indicia and pre-loaded ticket validation indicia in response to a cashout signal on the cashout signal input. After the ticket is printed, the gaming machine obtains a new pre-loaded validation number in preparation for the next ticket printing event.
摘要:
A gaming machine adapted to print validated tickets for a game player includes a microprocessor for controlling game operation (e.g., slot machine operation) and including a cashout signal input, a network interface coupled to the microprocessor for communicating with a central authority, and a memory in the network interface that stores a pre-loaded ticket validation number received from the central authority. In addition, a ticket printer is coupled to the microprocessor for printing a ticket that includes pending credit indicia and pre-loaded ticket validation indicia in response to a cashout signal on the cashout signal input. After the ticket is printed, the gaming machine obtains a new pre-loaded validation number in preparation for the next ticket printing event.
摘要:
An apparatus (312) for use with a gaming machine (102), the apparatus (312) comprising: an electronic processing board (144); a first data interface (366) that is electrically coupled to the electronic processing board (144); a second data interface (126) that is electrically coupled to the electronic processing board (144); and a ticket printer (318) that is electrically coupled to the electronic processing board (144), wherein the electronic processing board (144) is arranged to perform the following steps in response to a cashout signal (134): communicate with the gaming machine (102) via the first data interface (366) in order to effect a removal of wagerable credits from the gaming machine (102); communicate with a computer system (120), which is remote to the gaming machine (102), via the second data interface (126) so as to: provide the computer system (120) with details of the removal of wagerable credit; and receive from the computer system (120) ticket data that is associated with the removal of wagerable credits; and communicate with the ticket printer (318) in order to cause the ticket printer (318) to issue a ticket (136) that associated with the ticket data.