摘要:
A coin acceptor for use in accepting coins, paper currency, tokens, or magnetic cards includes a multi-state visual display for indicating the condition of the coin acceptor or an attached device. The coin acceptor finds application in connection with gambling devices including video poker games and slot machines, as well as with vending machines, arcade games, automated teller machines, and other similarly actuated devices and machines. In a preferred embodiment, the coin acceptor finds application in connection with a progressive jackpot component for a live casino table game and includes a visual display having three different states. In a first state, corresponding to jackpot wager attract or invitation, a plurality of LEDs surrounding a token slot flash sequentially to form a traveling pattern around the slot. In a second state, corresponding to jackpot wager placement, the LEDs flash simultaneously. In a third state, corresponding to jackpot wager acceptance, the LEDs remain continuously illuminated.
摘要:
Methods and apparatus for allowing gamblers playing either live casino table game or electronic video device versions of card games allow the players the options of (1) making wagers in both the underlying card game and a progressive jackpot component, (2) making wagers only in the underlying card game, and (3) making a wager only in the progressive jackpot component. In the live table version, a player may activate an indicator light or place a special token in the bet box for the underlying game to signal that the player opts to participate only in the progressive jackpot component. In the electronic video device version, a player activates one or more push buttons to select one of the three operational modes. The underlying card game preferably comprises Twenty-One or a five-card stud poker variant known as Caribbean Stud.TM. poker, but may also comprise other card games such as five card stud, seven card stud, Jacks or better, etc.
摘要:
A distributed comb tapped multiband antenna structure includes a PIFA-like antenna radiator having tap structures, and a counterpoise to the antenna radiator, wherein the tap structures include shunt connections to the counterpoise. A second antenna radiator is collinear and opposing the antenna radiator while sharing the counterpoise in common with the antenna radiator, such that the antenna structure is configured as a balanced dipole. The antenna structure can be contained internally within a single device housing and can operate over multiple frequency bands. The antenna provides high performance over a considerable bandwidth within each of the multiple frequency bands of operation, even where the frequency bands are not harmonically related.
摘要:
A method and apparatus for providing close proximity antenna measurement and tuning, includes a first receive-only antenna, a second antenna operable in a transmit mode, a tuning circuit coupled to the first antenna, a transmitter coupled to the second antenna, a receiver coupled to the first antenna, the receiver operable to measure a power into the first antenna delivered by a signal from the second antenna driven by the transmitter, and a processor coupled to the tuning circuit, transmitter, and receiver, the processor operable to step changes in the tuning circuit until a substantially maximum power of the signal is measured by the receiver.
摘要:
A method and apparatus for providing close proximity antenna measurement and tuning, includes a first receive-only antenna, a second antenna operable in a transmit mode, a tuning circuit coupled to the first antenna, a transmitter coupled to the second antenna, a receiver coupled to the first antenna, the receiver operable to measure a power into the first antenna delivered by a signal from the second antenna driven by the transmitter, and a processor coupled to the tuning circuit, transmitter, and receiver, the processor operable to step changes in the tuning circuit until a substantially maximum power of the signal is measured by the receiver.
摘要:
A method and system for adaptive operation of a power amplifier of an RFID reader device enables more efficient power management of the reader device. The method includes transmitting an RF interrogation signal from an antenna of the RFID reader device (step 505). A reflected signal is then received as a partial reflection of the interrogation signal (step 510). A return loss value is then estimated by comparing at least one parameter of the interrogation signal and at least one parameter of the reflected signal (step 515). Finally, an operating point of the power amplifier is adjusted in response to the return loss value (step 520).
摘要:
Methods, systems, and apparatuses for automated manufacturing microstrip element antennas is described. The microstrip element antenna comprises a printed circuit layer, a dielectric layer and a ground plane layer. Mass manufacturing process for such microstrip element antennas without any substantial manual assembly process is described. Automation of the manufacturing steps leads to lower production costs, faster production and a higher yield.
摘要:
A mobile wireless communication device includes a circulators coupled between a respective communications arrangement and their antennas. Each circulator includes a coupled tuning network, wherein the tuning networks are operable to tune their circulators for maximum isolation from cross coupling between the power amplifiers within an operating frequency band of the respective communications arrangement.
摘要:
A method and apparatus for mounting electronic components on an antenna structure includes at least one conductive antenna element 102, an insulating layer 106 disposed on the antenna element 102, at least one electronic component 108 disposed on the insulating layer 106, and at least one electrical trace 110 disposed on the insulating layer 106 and connecting to the at least one electronic component 108. The trace follows contours of the antenna structure, such that the trace and component are electrically isolated from the antenna element.
摘要:
A method and device enables improving a signal to noise ratio (SNR) of a backscatter signal received from a radio frequency identification (RFID) tag. The method includes generating a continuous wave (CW) carrier signal at the reader device (step 505). An amplitude modulation (AM) noise component of the CW carrier signal is then detected (step 510). The AM noise component is inverted to an inverted noise signal (step 515), and the inverted noise signal is summed with the CW carrier signal to provide an AM noise cancelled carrier signal (step 520). The AM noise cancelled carrier signal is then transmitted from an antenna of the reader device (step 525), and the backscatter signal is received at the reader device in response to transmission of the AM noise cancelled carrier signal (step 530).