Rapid satellite signal acquisition in a satellite positioning system

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The Trimble Navigation Limited patent solves the following problem:

When a Satellite Positioning System (SATPS) receiver / processor power, or when the receiver / processor experience SATPS signal interruption, if the receiver / processor without Almanac showing the location now see SATPS satellites, receiver / processor and associated SATPS antenna do a blind satellite search to find a sufficient number of SATPS satellites, often three or more, when the building's antenna SATPS determined location and / or the right time. SATPS antenna and receiver / processor standard selection SATPS satellite random number for the search. This method is often consumed in a few minutes by "Lock" a sufficient number of SATPS satellite signal reach. Some workers in electrical communication disclosed methods and / or apparati for reducing the time or difficulty in obtaining a signal communicated from the satellite.

Our analysis of this patent is as follows:

Trimble Navigation Limited’s patent US 5418538 A deals with Rapid satellite signal acquisition in a satellite positioning system.
A method for the rapid acquisition of Satellite Positioning System (SATPS) signal from a satellite-based positioning system, such as GPS or GLONASS, which does not require permanent storage of satellite Almanac information in a SATPS earth station . This SATPS signal acquisition method can be used every time the "new" station initially powers or lost locks one or more SATPS signal must be reacquired. A close discussion SATPS station, whose location coordinates are known with high accuracy, gives new station SATPS differential positioning SATPS information, and, optionally, with SATPS satellite ephemeride in each SATPS satellite view from the reference station. The new station will use this differential SATPS information to establish channels to find (only) the satellites SATPS evident from the reference station. By holding the search frequency range and code-round qualities, like great mini-random noise code used in each SATPS satellite, the equivalent of these so SATPS satellite, the order sought decreased. When a first SATPS satellite signal is acquired and locked into the new station, the frequency range for seeking the attainment of a range equivalent to Doppler shift frequency range of the visible satellites, and acquire more SATPS satellite signal comes quickly. This system also allows the use of less accurate time source for the new stations. A new station would need to store information in ephemeride for SATPS satellites but may call up and use the ephemeride information stored in the reference station.

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High amperage, high efficiency electrical slide switch assembly with plug and socket contacts

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The Dixon, Jr.; Alfred R. patent solves the following problem:

Fires often occur after a car crash or collision. The fire can occur when the vehicle's fuel tank ruptured, and the resulting spilled fuel ignited by an electrical spark. Therefore, it is beneficial if the car was equipped with a mechanism that is activated during a crash or collide, resulting in the shut-off the electrical power to the vehicle thus removing electrical sparks.

Our analysis of this patent is as follows:

Dixon, Jr.; Alfred R.’s patent US 5416286 A deals with High amperage, high efficiency electrical slide switch assembly with plug and socket contacts.
A high amperage switch given for interrupting the power flow through a circuit. First and second connectors connected to the circuit with open circuit between first and second connectors. An electrically conductive bridging member includes first and second complementary-shaped connectors each mateable with the first and second electrical connectors coupling the first and second connectors together when the bridging member is in the closed position and interrupting the circuit when the bridging member is in an open position. The bridging member is moved between the closed and open positions. The present invention particularly well adapted for use in a vehicle with an electrical circuit for supplying power from a car battery to at least one electrical component used in the vehicles.

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Method and apparatus for conditioning refuse

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The Rss, Inc. patent solves the following problem:

The invention relates to the disposal / treatment of waste in the form of solid waste material, and particularly to a method and apparatus for conditioning refuse burned monitored polyfoam plastic material as a stage in the waste disposal process.

Our analysis of this patent is as follows:

Rss, Inc.’s patent US 5412881 A deals with Method and apparatus for conditioning refuse.
A method and apparatus for the treatment of waste by not combustibly decreasing waste plastics polyfoam. waste is heated to a temperature between 250 and 500 for a minimum period of time. A rotatable chamber heats the waste and transports the waste to the minimum period of time. An operator controls the rate of rotation of the chamber and thus during the heating according to the moisture content of the waste. A steam / air mixture is used as a heat medium serves to kill bacteria in waste in addition to leaving and drying the waste.

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