| Patent application number | Description | Published |
|---|
| 20090184847 | VEHICLE LANE DISCRIMINATION IN AN ELECTRONIC TOLL COLLECTION SYSTEM - A vehicle position determination system for determining the position of a moving vehicle in a multi-lane roadway. Two or more roadway antennas each periodically transmit an identifier that is associated with and unique to the antenna to a transponder located in the moving vehicle. As the moving vehicle passes through the coverage zone of the antennas, the transponder counts the number of times that it receives each unique identifier and reports this information to a roadside controller. Based on this information, the roadside controller can determine a probable location of the moving vehicle. The vehicle location information can be provided to an imaging system to discriminate between transponder and non-transponder equipped vehicles. | 07-23-2009 |
| 20090201169 | Real-Time Location Systems and Methods - A real-time location system for identifying and locating tagged items. The system may include an identification protocol that tracks in-network transponders and assigns dynamic in-network identification numbers to in-network transponders. The system includes a locator function that employs time-of-arrival analysis. Rather than attempt to synchronize the time base at each reader, the system and process eliminate the need to sync the readers and also eliminate the impact of differential receive delays in the respective readers. Both the transponder and a master reader transmit locate signals, which are measured at slave readers. The system relies on differences in time-of-arrival of the two signals at the respective slave readers to determine the likely location of the transponder. | 08-13-2009 |
| 20100022202 | TRANSCEIVER REDUNDANCY IN AN ELECTRONIC TOLL COLLECTION SYSTEM - An electronic toll collection system wherein the reader includes a switching network and a plurality of transceivers operating under the control of a controller. The reader further includes failure detection circuitry for determining whether any of the transceivers have failed based upon the RF outputs of the transceivers. If the controller determines that a transceiver has failed, then it alters the switching pattern such that the switching network excludes the failed transceiver from being connected to the antennas. The reader thereby provides for adaptive RF channel assignment, as the particular transceiver used to excite a particular antenna may be dynamically altered, and the provision of at least two transceivers in the reader ensures transceiver redundancy. | 01-28-2010 |
| 20100085213 | HIGH OCCUPANCY VEHICLE STATUS SIGNALING USING ELECTRONIC TOLL COLLECTION INFRASTRUCTURE - An electronic toll collection system, reader, method and transponder for communicating occupancy status. The vehicle-mounted transponder includes a selection device that permits a user to select between a normal and high occupancy state. The transponder reports its occupancy status to a reader. If the electronic toll collection system processes a toll transaction and the transponder claims high occupancy status during the toll transaction, the fact that high occupancy status was claimed during the transaction is recorded in memory within the transponder for later enforcement and verification purposes. | 04-08-2010 |
| 20100237998 | ADAPTIVE COMMUNICATION IN AN ELECTRONIC TOLL COLLECTION SYSTEM - An adaptive communication system and method for use in an electronic toll collection system utilizing transponders located in vehicles travelling on a toll roadway. A transponder memory stores configuration type data that identifies the type of the vehicle carrying the transponder, the transponder or the transponder's mounting. The transponder transmits the configuration type data to the communication system. The communication system includes a memory which contains a database of predetermined communication parameters for various types of configuration types. The communication system looks up the predetermined communication parameters for the configuration type and adjusts variable communication parameters accordingly. Predetermined communication variables may include the transmit power of an antenna, or the receive sensitivity of the antenna or the position of the vehicle in order to maximize the likelihood of a successful communication. | 09-23-2010 |
| 20100245126 | ENHANCED TRANSPONDER PROGRAMMING IN AN OPEN ROAD TOLL SYSTEM - A transponder communication system and method for communicating with a transponder in an electronic toll collection system. A roadside reader attempts to program the transponder in a normal mode in which a programming signal is transmitted to a first coverage area. If the programming attempt in the normal mode is unsuccessful, the reader attempts to program the transponder in an enhanced mode in which a programming signal is transmitted to a second coverage area. The coverage area is adjusted after the programming attempt in the normal mode by using an adjacent antenna to the antenna used to transmit in the normal mode or by increasing the power of the programming signal to a level that is greater than the level used to transmit the programming signal in the normal mode. | 09-30-2010 |
| 20110304434 | MULTI-PROTOCOL ELECTRONIC TOLL COLLECTION SYSTEM - A system and method for dynamically selecting a communication protocol in an electronic toll collection system. A first reader communicating under a primary communication protocol is connected to a roadway antenna. If a transponder of the primary protocol is detected within a predetermined duration, then the first reader maintains its access to the roadway antenna so that it may perform an electronic toll transaction with the detected transponder. If a transponder of the primary protocol is not detected within a predetermined duration, then the first reader will switch over access of the antenna to a second reader operating under a secondary protocol so that the second reader may perform an electronic toll transaction with a detected secondary protocol transponder. | 12-15-2011 |
| 20110307305 | MULTI-PROTOCOL ELECTRONIC TOLL COLLECTION SYSTEM - A system and method for dynamically selecting a communication protocol in an electronic toll collection system. A reader includes two or more multiprotocol transceivers operating under the control of a processor, each transceiver having a dedicated antenna. The system uses a fixed frame duration. A first communications protocol is used in a first portion of the fixed frame duration. If a response signal is not detected within the first portion, then the system ceases using the first communication protocol and instead uses the second communications protocol for the remainder of the fixed frame duration. The fixed frame duration is shorter than the sum of the durations normally used by the first and second communications protocol to conduct electronic toll transaction communications. | 12-15-2011 |
| Patent application number | Description | Published |
|---|
| 20080198364 | GAS SENSOR - A combined gas sensor device allowing the measuring of the concentration of a gas by tunable diode laser spectrometry as well as by resonant photo-acoustics within one housing. A laser beam used for laser spectrometry is sent across the openings of a measuring cell usually used for resonant photo-acoustic determination. Thus, both measuring principles use the same gas sensing module with a minimum of space consumption, so that the device can be produced with minimum dimensions. Further, a common opto-electronics and electronics platform can be used which reduces the overall costs of such a combined gas sensor. | 08-21-2008 |
| 20090027677 | METHOD AND GAS SENSOR FOR PERFORMING QUARTZ-ENHANCED PHOTOACOUSTIC SPECTROSCOPY - A method for performing quartz-enhanced photoacoustic spectroscopy of a gas, includes providing a light source configured to introduce a laser beam having at least one wavelength into the gas such said at least one molecule within in the gas is stimulated generating an acoustic signal, accumulating the acoustic signal in a resonant acoustic detector, generating a resonant absorption signal (S | 01-29-2009 |
| 20100002235 | LASER DIODE ARRANGEMENTS AND METHOD FOR GAS DETECTION - A gas detection laser diode device and gas detection unit including the gas detection laser diode device having a hermetically sealed housing with electrical connectors at the bottom and a window, and inside the housing a laser diode and thermistor mounted on one stage of a thermo element. The thermo element is connected with the other stage to the base of the housing. Collimating means are arranged in the laser beam between the laser diode and the window. The window is tilted in respect to the axis of the laser beam such, that the ordinary reflection of the laser beam is steered off the laser beam axis and at least does not impinge on the laser diode. Preferably the collimating means and the laser diode are mounted on a same surface for holding them on the same temperature. The new device allows the detection of toxic gases with reduced detection limits over the prior art. The arrangement further claims a method to achieve reduced detection limits for gases. | 01-07-2010 |
| 20110304844 | GAS SENSOR AND PROCESS FOR MEASURING MOISTURE AND CARBON DIOXIDE CONCENTRATION - An TDLS gas sensor with a measuring pick-up to be arranged outside of the interior chamber of an incubator or a climate chamber of similar design, and with an absorption pick-up to be arranged inside the interior chamber, and also with a window separating the measuring area and absorption area for the atmospheric separation of the laser diode from the interior chamber of the incubator, with the window being arranged at an angle to the axis of the laser beam emitted by a laser diode, and with the optronic components being arranged in a block of material in the measuring pick-up, said block being made of thermally well-conducting material and serving as heat sink, and with a heating system for the window in the measuring pick-up. The TDLS gas sensor is easy to install and remove and permits the measurement of moisture and of the carbon dioxide concentration in one measuring cycle. However, it does not need to be removed for the sterilization. By installing an additional laser diode for measuring oxygen, the TDLS gas sensor can be used to perform a wide bandwidth of measurements. In addition, the invention concerns a process for measuring the moisture and the carbon dioxide concentration. | 12-15-2011 |
| Patent application number | Description | Published |
|---|
| 20090285544 | Video Processing - A method and apparatus for processing video is disclosed. In an embodiment, image features of an object within a frame of video footage are identified and the movement of each of these features is tracked throughout the video footage to determine its trajectory (track). The tracks are analyzed, the maximum separation of the tracks is determined and used to determine a texture map, which is in turn interpolated to provide an unwrap mosaic for the object. The process may be iterated to provide an improved mosaic. Effects or artwork can be overlaid on this mosaic and the edited mosaic can be warped via the mapping, and combined with layers of the original footage. The effect or artwork may move with the object's surface. | 11-19-2009 |
| 20100322525 | Image Labeling Using Multi-Scale Processing - Multi-scale processing may be used to reduce the memory and computational requirements of optimization algorithms for image labeling, for example, for object segmentation, 3D reconstruction, stereo correspondence, optical flow and other applications. For example, in order to label a large image (or 3D volume) a multi-scale process first solves the problem at a low resolution, obtaining a coarse labeling of an original high resolution problem. This labeling is refined by solving another optimization on a subset of the image elements. In examples, an energy function for a coarse level version of an input image is formed directly from an energy function of the input image. In examples, the subset of image elements may be selected using a measure of confidence in the labeling. | 12-23-2010 |
| 20110210915 | Human Body Pose Estimation - Techniques for human body pose estimation are disclosed herein. Images such as depth images, silhouette images, or volumetric images may be generated and pixels or voxels of the images may be identified. The techniques may process the pixels or voxels to determine a probability that each pixel or voxel is associated with a segment of a body captured in the image or to determine a three-dimensional representation for each pixel or voxel that is associated with a location on a canonical body. These probabilities or three-dimensional representations may then be utilized along with the images to construct a posed model of the body captured in the image. | 09-01-2011 |
