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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 6677894 | Method and apparatus for providing location-based information via a computer network Methods and apparatuses for distributing location-based information (i.e., information specific to a client's location or a location of interest to the client) to a client, which may be a mobile SPS receiver, via the Internet and in particular, the World-... | 01/13/2004 |
| 6597311 | Method and apparatus for determining time in a satellite positioning system A method and apparatus for determining a reference time associated with a satellite positioning system. In turn, the reference time, in one embodiment, may be used to determine other navigational information. Such navigational information may include, for... | 07/22/2003 |
| 6583757 | Method and apparatus for satellite positioning system (SPS) time measurement A method and apparatus for measuring time related to satellite data messages which are used with satellite positioning systems (SPS). In one method, a first record of at least a portion of a satellite data message is received at an entity, which is typica... | 06/24/2003 |
| 6289041 | Fast Acquisition, high sensitivity GPS receiver A method and apparatus of acquiring and tracking global positioning system signals with fast acquisition speed and high sensitivity is disclosed. A pseudo-random noise matching filter operation is performed on a sample of global positioning system signals... | 09/11/2001 |
| 6215441 | Satellite positioning reference system and method Methods and apparatuses which use satellite position system (SPS) reference receivers. In one example of the invention, a plurality of SPS reference receivers, such as Global Positioning System (GPS) reference receivers, each having a known position, are ... | 04/10/2001 |
| 6215442 | Method and apparatus for determining time in a satellite positioning system A method and apparatus for determining a reference time associated with a satellite positioning system. In turn, the reference time, in one embodiment, may be used to determine other navigational information. Such navigational information may include, for... | 04/10/2001 |
| 6208290 | GPS receiver utilizing a communication link Methods and apparatuses for deriving an approximate Doppler for a satellite positioning system (SPS) receiver from an approximate location which is obtained from a cellular communication system information source. In one embodiment, an approximate locatio... | 03/27/2001 |
| 6208291 | Highly parallel GPS correlator system and method A method and apparatus of acquiring and tracking satellite positioning system signals in a highly parallel correlator disclosed. A pseudo-random noise correlation operation is performed on an input satellite positioning system signal to provide a correlat... | 03/27/2001 |
| 6185427 | Distributed satellite position system processing and application network A system and method for processing in a distributed manner satellite position system (SPS) information. In one example of the invention, a first mobile SPS receiver receives SPS signals from a plurality of SPS satellites and transmits a position informati... | 02/06/2001 |
| 6150980 | Method and apparatus for determining time for GPS receivers A method and apparatus of determining the time for a global positioning system receiver is disclosed. Timing signals derived from a communication system, such as cellular phone transmission signals, are received by a GPS receiver and decoded to provide ac... | 11/21/2000 |
| 6133874 | Method and apparatus for acquiring satellite positioning system signals A method and an apparatus which acquire satellite positioning system (SPS) signals in an SPS receiver. Information on time of day, approximate receiver location, and satellite positions are used to reduce the time to search and acquire signals from one or... | 10/17/2000 |
| 6133871 | GPS receiver having power management A GPS receiver having a low power mode of operation in one embodiment includes an antenna which receives GPS signals at an RF frequency from in view satellites; a downconverter coupled to the antenna for reducing the RF frequency of the received GPS signa... | 10/17/2000 |
| 6131067 | Client-server based remote locator device A user accesses a server using a client. The client provides an identification code which serves to uniquely identify a remote sensor. The remote sensor is capable of providing information related to its position. The server interrogates the remote sensor... | 10/10/2000 |
| 6111540 | Combined GPS positioning system and communications system utilizing shared circuitry A combined GPS and communication system having shared circuitry. The combined system includes an antenna for receiving data representative of GPS signals, a frequency converter coupled to the antenna, a frequency synthesizer coupled to the frequency conve... | 08/29/2000 |
| 6107960 | Reducing cross-interference in a combined GPS receiver and communication system A method and apparatus is disclosed for reducing cross-interference in a combined satellite positioning system receiver and communication transceiver device. A control signal is transmitted from the communication transceiver to the satellite positioning s... | 08/22/2000 |
| 6104340 | GPS receiver and method for processing GPS signals A global positioning system (GPS) receiver has first circuitry for receiving and processing pseudorandom sequences transmitted by a number of GPS satellites. The first circuitry is configured to perform conventional correlation operations on the received ... | 08/15/2000 |
| 6104338 | Method and apparatus for operating a satellite positioning system receiver A method and an apparatus for operating a satellite positioning system (SPS) receiver in a client/server architecture. In one example of a method, a first plurality of pseudoranges is determined at a first time and a second plurality of pseudoranges is de... | 08/15/2000 |
| 6064336 | GPS receiver utilizing a communication link A precision carrier frequency signal for calibrating a local oscillator of a GPS receiver which is used to acquire GPS signals. The precision carrier frequency signal is used to calibrate the local oscillator such that the output of the local oscillator, ... | 05/16/2000 |
| 6061018 | Method and system for using altitude information in a satellite positioning system A method and apparatus for determining a position of a mobile satellite positioning system (SPS) receiver. In one example of a method, a cell object information is determined; this cell object information comprises at least one of a cell object location o... | 05/09/2000 |
| 6052081 | Method and apparatus for satellite positioning system based time measurement A method and apparatus for measuring time related to satellite data messages which are used with satellite positioning systems (SPS). In one method, a first record of at least a portion of a satellite data message is received at an entity, which is typica... | 04/18/2000 |
| 6016119 | Method and apparatus for determining the location of an object which may have an obstructed view of the sky A positioning sensor receives and stores a predetermined record length of positioning signals while in a fix position located such that the positioning sensor can receive positioning signals. Thereafter, the stored positioning signals are processed to det... | 01/18/2000 |
| 6002363 | Combined GPS positioning system and communications system utilizing shared circuitry A combined GPS and communication system having shared circuitry. The combined system includes an antenna for receiving data representative of GPS signals, a frequency converter coupled to the antenna, a frequency synthesizer coupled to the frequency conve... | 12/14/1999 |
| 5999124 | Satellite positioning system augmentation with wireless communication signals A method and apparatus for processing position information from satellite positioning system satellites and from cellular based communication signals. In one example of a method according to the invention, a SPS receiver receives SPS signals from at least... | 12/07/1999 |
| 5945944 | Method and apparatus for determining time for GPS receivers A method and apparatus of determining the time for a global positioning system receiver is disclosed. Timing signals derived from a communication system, such as cellular phone transmission signals, are received by a GPS receiver and decoded to provide ac... | 08/31/1999 |
| 5884214 | GPS receiver and method for processing GPS signals A global positioning system (GPS) receiver has first circuitry for receiving and processing pseudorandom sequences transmitted by a number of GPS satellites. The first circuitry is configured to perform conventional correlation operations on the received ... | 03/16/1999 |
| 5874914 | GPS receiver utilizing a communication link A GPS receiver in one embodiment includes an antenna which receives GPS signals at an RF frequency from in view satellites; a downconverter coupled to the antenna for reducing the RF frequency of the received GPS signals to an intermediate frequency (IF);... | 02/23/1999 |
| 5841396 | GPS receiver utilizing a communication link A precision carrier frequency signal for calibrating a local oscillator of a GPS receiver which is used to acquire GPS signals. The precision carrier frequency signal is used to calibrate the local oscillator such that the output of the local oscillator, ... | 11/24/1998 |
| 5831574 | Method and apparatus for determining the location of an object which may have an obstructed view of the sky A positioning sensor receives and stores a predetermined record length of positioning signals while in a fix position located such that the positioning sensor can receive positioning signals. Thereafter, the stored positioning signals are processed to det... | 11/03/1998 |
| 5825327 | GPS receivers and garments containing GPS receivers and methods for using these GPS receivers A GPS receiver having multiple GPS antennas. Also described is a method of tracking employing the GPS receiver and a communication transmitter. Also described is a garment having a GPS receiver and a GPS antenna and a communication antenna and a communica... | 10/20/1998 |
| 5812087 | Method and apparatus for satellite positioning system based time measurement A method and apparatus for measuring time related to satellite data messages which are used with satellite positioning systems (SPS). In one method, a first record of at least a portion of a satellite data message is received at an entity, which is typica... | 09/22/1998 |
| 5781156 | GPS receiver and method for processing GPS signals A GPS receiver in one embodiment includes an antenna which receives GPS signals at an RF frequency from in view satellites; a downconverter coupled to the antenna for reducing the RF frequency of the received GPS signals to an intermediate frequency (IF);... | 07/14/1998 |
