Abstract: A multifunction sight is disclosed. The multifunction sight includes an body, a receiving aperture, an emitting aperture, a parabolic reflector, and an optical detector. The receiving aperture passes radiation in a first band and a second band into the body where the first band is different from the second band. The emitting aperture that passes the radiation in the first band out of the body. The parabolic reflector displays a point source such that the point source is visible from the emitting aperture. The point source appears aligned with where the multifunction sight is aimed irrespective of a visual alignment with the emitting aperture. The optical detector is affixed to the body and coupled to the radiation in the second band, and receives coded radiation with the second band.

Abstract: Shaped Offset Quadrature Amplitude Modulation (QAM) can be implemented within a communication system. A train or sequence of orthogonal sinc pulses can be generated for each of the in-phase and quadrature signal paths. The sinc pulses in the quadrature signal path can have a predetermined time offset relative to the pulses in the in-phase signal path. An in-phase or quadrature antipodal data signal can be used to modulate the respective sinc pulse train. Each of the in-phase and quadrature pulses can be shaped using a time domain windowing function, such as a Kaiser-Bessel window, to adjust the spectral width and spectral sidelobe level of the signal. The beta parameter of the window can be adjusted to achieve the desired signal response. The timing of the sinc pulses may need to be adjusted following the window function in order to maintain orthogonality of the pulses.

Abstract: A dynamic optical tag system and method that allows for operation over a wide temperature range. A variable wavelength optical source, such as a dual wavelength fiber laser, is generated by combining the outputs from two distributed feedback lasers having separate operating wavelengths using a wavelength division multiplexer (WDM). A quantum well optical modulator mounted on the front surface of a retro-reflector in the remote receiver end of the communication link is biased to modulate one of the two laser wavelengths. At higher temperatures, the optical modulator can be biased to operate at the wavelength of one of the two lasers. At a lower temperature, the optical modulator can be biased to operate at the second of the two wavelengths. The DC bias required to tune the optical modulator is reduced by operating at two separate wavelengths depending on temperature.

Abstract: This disclosure describes novel systems, methods and software for determining a position of a tracked object, which might be a fixed-wing or rotary-wing aircraft, some other flying object, a vehicle (e.g., an automobile, a tactical military vehicle, etc.), a person, and/or the like. More particularly, in an aspect of this disclosure, a measured altitude for an aircraft is adjusted based on a correction factor, which is determined by comparing a measured altitude at reference point with a known reference elevation for the same reference point. This can provide enhanced accuracy and/or precision in recorded altitude measurements, which allows for more faithful presentation of altitude data, for example in post-mission debriefings, simulations and the like.

Abstract: A fast data transfer collection system using message authentication and contactless RF proximity card technology in non-contact storage and retrieval applications. The system is generally comprised of Host computers (application computer systems), Target radio frequency (RF) terminals, and a plurality of portable Tags (“smart” or “proximity” cards). A Host provides specific application functionality to a Tag holder, with a high degree of protection from fraudulent use. A Target provides control of the RF antenna and resolves collisions between multiple Tags in the RF field. A Tag provides reliable, high speed, and well authenticated secure exchanges of data/information with the Host resulting from the use of a custom ASIC design incorporating unique analog and digital circuits, nonvolatile memory, and state logic. Each Tag engages in a transaction with the Target in which a sequence of message exchanges allow data to be read(written) from(to) the Tag.

Abstract: According to the invention, a fare card for storing information in a plurality of different ways for use in a transit system is disclosed. The fare card includes a card body that has at least a first region and a second region. The first region is located adjacent to an edge of the card body and has a first thickness. The second region has a second thickness that is different than the first thickness. A first data storage element for storing fare information is included in the first region, and a second data storage element is included in the second region.

Abstract: An access control system for sensing exposure to items of interest for a person associated with a unique identifier of a fare card or ticket is disclosed. The access control system includes the unique identifier, an exposure detector and a processor. The unique identifier associated with the person that is flagged when exposure is detected. The exposure detector detects exposure to items of interest by the person. The processor is coupled to the exposure detector. The message is communicated away from the processor to a remote location when the unique identifier is flagged.

Abstract: A mass transit system of a transit authority automatically determines and applies the lowest possible transit fare to a patron's account, thereby releasing the patron from decisions leading to the most cost effective fare instrument for his or her transit pattern. A fair fare system and method utilizes the transit authority's existing hardware infrastructure, i.e., mainframe, vendors, gates, smart card and Point of Issue (POI) devices, with additional processing mechanisms for determining the best fare over rolling time periods. Because a relatively large storage capacity of the fare instrument is required, smart cards are employed for use with the fare fair system.

Abstract: An RF power oscillator for contactless card antennas shapes a carrier signal at the operating frequency utilizing a delay circuit having a number of taps for delaying the carrier signal by different lengths of time. The delayed signals are input into a buffer and output through impedance elements to a node coupled to the antenna. The resulting waveform for a square wave input signal, and equal-length delay taps, is a trapezoidal wave output. Any input wave form can be shaped in a variety of ways depending upon the combinations of delay taps used. Since the buffer drivers for each delayed wave switch state at slightly different times, the amplitude and bandwidth of emitted electromagnetic interference (EMI) is reduced for the transmission circuit.

Abstract: A transceiver system employing vector feedback to linearize the transmitter over a narrowband channel to support concurrent low-rate subchannels, each providing a low bit error rate (BER). Symbols in each subchannel are transmitted at a rate sufficiently slow to avoid multipath errors, thereby spreading each signal component across the entire channel bandwidth to eliminate any remaining discrete non-linearity. The system provides for generating constellations of signal states that can be optimized for both phase and amplitude to represent symbols within existing narrowband mobile communications channels. Symbols are transmitted at a rate sufficiently slow in each subchannel to decorrelate multipath interference at the receiver, thereby better discriminating adjacent symbol states. This transceiver is particularly useful for mobile environments, although it applies equally well to stationary environments.

Abstract: According to the invention, a method for processing credit for a contactless smart card is disclosed. In one step, the contactless smart card is uniquely recognized at a first location. The contactless smart card is capable of recording the credit or debit that affects a stored value associated with the contactless smart card. A notice that a credit or a debit is destined for the contactless smart card is received. It is determined and reported that the credit or debit was not properly recorded to affect the stored value on the contactless smart card. The reporting is away from the first location. An indication that the credit or debit should be loaded if the contactless smart card is encountered at the second location is received. The contactless smart card is uniquely recognized at the second location. The credit or debit is automatically loaded onto the contactless smart card at the second location to affect the stored value of the contactless smart card.

Abstract: A system and method for automatically loading a pre-selected value onto a fare card allows a patron to enter or leave a transit system gate without having to add a fare value at a vending machine. The automatic loading provides added convenience and security for the patron. The vehicle for the automatically-loaded value is either a credit card that is pre-authorized for use by the patron, or the patron's available benefits. The automatic loading process may be utilized to autoload values of benefits only, or to load values from a combination of benefits and credit card transactions. The pre-selected autoload value is loaded onto the fare card at the gate before confirmation that the credit card transaction is authorized. The gate sends a message to a transit central computer that an autoload has occurred. The central computer determines whether benefits are available to fill the request, and forwards a request for the difference to a credit processing company.

Abstract: A Universal Ticket Transport (UTT) 10, 150 may be configured to read from and write to many types of magnetically encoded tickets 20 currently used in fare collection systems. The UTT 10, 150 includes a mechanical insertion interface and automated movement along a transport path 18 for tickets 20 of varying thicknesses that are presented at a range of different angles 40, 42 into and exiting from the UTT 10, 150. The UTT 10, 150 includes a mechanical assembly 156, 158 which may be rotated, and the belts 22, 24, 152, 154 and rollers 30, 32, 34, 36 reconfigured, to accommodate tickets 20 having top-face or bottom face magnetic stripes. The belt subassemblies A, C and the magnetic head subassembly B are configurable across a width W of the UTT 10, 150 to process tickets 20 having magnetic stripes which are offset from a center line 86.

Abstract: A fast data transfer collection system using message authentication and contactless RF proximity card technology in non-contact storage and retrieval applications. The system is generally comprised of Host computers (application computer systems), Target radio frequency (RF) terminals, and a plurality of portable Tags (“smart” or “proximity” cards). A Host provides specific application functionality to a Tag holder, with a high degree of protection from fraudulent use. A Target provides control of the RF antenna and resolves collisions between multiple Tags in the RF field. A Tag provides reliable, high speed, and well authenticated secure exchanges of data/information with the Host resulting from the use of a custom ASIC design incorporating unique analog and digital circuits, nonvolatile memory, and state logic. Each Tag engages in a transaction with the Target in which a sequence of message exchanges allow data to be read(written) from(to) the Tag.

Abstract: A Universal Ticket Transport (UTT) 10, 150 may be configured to read from and write to many types of magnetically encoded tickets 20 currently used in fare collection systems. The UTT 10, 150 includes a mechanical insertion interface and automated movement along a transport path 18 for tickets 20 of varying thicknesses that are presented at a range of different angles 40, 42 into and exiting from the UTT 10, 150. The UTT 10, 150 includes a mechanical assembly 156, 158 which may be rotated, and the belts 22, 24, 152, 154 and rollers 30, 32, 34, 36 reconfigured, to accommodate tickets 20 having top-face or bottom face magnetic stripes. The belt subassemblies A, C and the magnetic head subassembly B are configurable across a width W of the UTT 10, 150 to process tickets 20 having magnetic stripes which are offset from a center line 86.

Abstract: Embodiments of the invention, therefore, provide improved systems and methods for tracking targets in a simulation environment. Merely by way of example, an exemplary embodiment provides a reflected laser target tracking system that tracks a target with a video camera and associated computational logic. In certain embodiments, a closed loop algorithm may be used to predict future positions of targets based on formulas derived from prior tracking points. Hence, the target's next position may be predicted. In some cases, targets may be filtered and/or sorted based on predicted positions. In certain embodiments, equations (including without limitation, first order equations and second order equations) may be derived from one or more video frames. Such equations may also be applied to one or more successive frames of video received and/or produced by the system.

Abstract: Disclosed is a media processor that may be used for controlling access to a location, such as a transit system or an amusement park. The media processor also may be used to encode information onto the token, sort a plurality of tokens, and issue tokens that have value. In one aspect of the disclosure, a media processor is disclosed for reading from, writing to, or sorting media, wherein the media processor includes an entry bezel for accepting media into the media processor, a transmitter and receiver for reading from, writing to, or sorting the media, at least one exit path for the media to exit the media processor, and a rotatable disk for moving the media from the entry bezel to the transmitter and receiver and to the at least one exit path.

Abstract: A low cost fare collection system includes a removable farebox having an integral collection box. The farebox can be installed in a temporary installation at a fare collection location for the collection of fares and can be removed to a secure location for emptying and reconciliation. The farebox can include an integral collection box for receiving fares deposited in the farebox. The farebox can be configured such that the collected fares can be emptied only when the farebox is removed from the temporary installation to reduce tampering and theft. A fare validator can be used to verify the amount and value of a fare deposited in the farebox to eliminate human validation of fares. Electronic monitors can collect data relating to fares deposited, total revenue collected, time of fare collection, and other data items that can be retrieved when the farebox is removed and emptied.

Abstract: A virtual gate provides the impression of a gated entry without a physical barrier. As such it functions as a gateway to access areas including transit Rail or, potentially, prepaid Bus services. The VG would require the interaction of the patron to present ticket media to the card reading mechanism. This action turns the gate light indicators to Green for Go or Red for No-Go, accompanied by corresponding tones to alert the patron and fare enforcement officers as to the status of validation. The ticket readers can be placed on both ends of the gate. This allows the gate to be configured for traffic flow in either direction or act as two equivalent Stand Alone Validators.

Abstract: A classifying farebox houses a bill unit which quickly accepts bills and coins from a patron, determines most probably currency denomination, and deposits the currency in a windowed area of the farebox for driver verification. Since the classifying farebox determines denomination, the driver does not need to make any entry of deposited fare value to support the fare product. However, via the window, the driver has the opportunity to look at the bills to determine if patrons have inserted fraudulent bills.