Abraham Charles (Cupertino CA) Janky James M. (Los Altos CA)
출원인 / 주소
Trimble Navigation Limited (Sunnyvale CA 02)
인용정보
피인용 횟수 :
105인용 특허 :
0
초록▼
Methods for provision of a sequence of timing signals for one or a plurality of microprocessors, microprocessor peripheral devices or other timing-controlled instruments (“users”), using timing signals determined from a Satellite Positioning System (SPS), such as GPS or GLONASS. In a first embodimen
Methods for provision of a sequence of timing signals for one or a plurality of microprocessors, microprocessor peripheral devices or other timing-controlled instruments (“users”), using timing signals determined from a Satellite Positioning System (SPS), such as GPS or GLONASS. In a first embodiment, one or a plurality of users is individually provided with SPS signal antennas and receiver/processors, and timing signals are optionally individually for each user. The timing signals can be periodic, for example, a One-Pulse-Per-Second signal for fine corrections of high frequency timing signals issued by an internal or external clock. The timing signals can also be substantially non-periodic. The timing signals may also be used to determine the time at which selected events occur, such as issuance of interrupt commands in, or directed to, a microprocessor. In another embodiment, CDMA or spread spectrum communications can be implemented and improved by using frequency hopping or other carrier-coded communications in which a time interval for use of the present carrier code is determined by two spaced apart timing signals received from an SPS timing device. In another embodiment, transmission times for each of a plurality of TDMA communications stations are synchronized using SPS timing signals. In another embodiment, each of a plurality of cellular telephone (CT) users is allocated to an appropriate CT cell for signal transmission and receipt, using timing and location information obtained from differential SPS signals.
대표청구항▼
A method for providing a sequence of timing signals for a network of M microprocessors or other timing-controlled electronic instruments, numbered m=1, 2, . . . , M, (M≥2), the method comprising the steps of: providing a network containing a plurality of M timing-controlled electronic instruments, n
A method for providing a sequence of timing signals for a network of M microprocessors or other timing-controlled electronic instruments, numbered m=1, 2, . . . , M, (M≥2), the method comprising the steps of: providing a network containing a plurality of M timing-controlled electronic instruments, numbered m=1, 2, . . . , M (M≥2); providing each of the M electronic instruments with an internal clock that generates and issues internal tinning signals for use in operations by that instrument; providing a GPS signal antenna and GPS signal receiver/processor, to receive and process GPS signals from two or more GPS satellites, to use these GPS signals to determine the times of receipt of these signals at the GPS antenna, to continually compute and transmit a sequence of time measurement signals, which have associated timing errors of at most about one microsecond and which are transmitted at least once in every time interval of length at most about one second; and causing each of the M instruments to receive this sequence of time measurement signals from the GPS receiver/processor and to adjust its internal timing signals to be synchronized with this sequence of time measurement signals, whereby the timing of operations performed by each of the M instruments is synchronized with the sequence of timing signals.
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이 특허를 인용한 특허 (105)
Janky James M. (Los Altos CA) Schipper John F. (Palo Alto CA), Accurate time standard for vehicle operation.
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Sowles Kenneth L. (Chandler AZ) Gregg Ralph C. (Tempe AZ) Olds Keith A. (Mesa AZ), Apparatus for mobile unit acquisition in a satellite communication system and method therefor.
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Chang, Donald C. D.; Yung, Kar W.; Cheng, David C.; Hagen, Frank A.; Chang, Ming U.; Novak, III, John I., Coherent synchronization of code division multiple access signals.
Preston, Dan A.; Preston, Joseph D.; Leyendecker, Robert; Eatherly, Wayne; Proctor, Rod L.; Smith, Phillip R., In-band signaling for data communications over digital wireless telecommunications networks.
Adams, Robbin B.; Vajapeyam, Bhasker; Prado, Jesus Eduardo; Carroll, Paul E.; Hallaman, James Michael, Low-power satellite-timed seismic data acquisition system.
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Thadasina, Nivedan; Csapo, John; Gilliland, Paul, Method and system for synchronizing a clock for an adjacent network to a clock for an overlay network.
Krasner, Norman F., Method for determining A change in A communication signal and using this information to improve SPS signal reception and processing.
Krasner,Norman F., Method for determining a change in a communication signal and using this information to improve SPS signal reception and processing.
Preston, Dan A.; Preston, Joseph; Leyendecker, Robert; Eatherly, Wayne; Proctor, Rod L., Method for in-band signaling of data over digital wireless telecommunications networks.
Preston,Dan A.; Preston,Joseph; Leyendecker,Robert; Eatherly,Wayne; Proctor,Rod L., Method for in-band signaling of data over digital wireless telecommunications networks.
Bruno, Ronald; Schuchman, Leonard; Engelbrecht, Lloyd, Position enhanced communication system including system for embedding CDMA navigation beacons under the communications signals of a wireless communication system.
Chang, Donald C. D.; Yung, Kar W.; Cheng, David C.; Chang, Ming U.; Hagen, Frank A., Position location of multiple transponding platforms and users using two-way ranging as a calibration reference for GPS.
Kuroki Yoshinori,JPX ; Suzuki Toshiro,JPX ; Koide Ayumu,JPX ; Kojima Takafumi,JPX ; Kogure Yasuo,JPX, Radio paging transmitter which adjusts its transmission time based on detection of its own transmission delay.
Derrick, Bruce; McNab, David S.; Larson, Stephen N. D.; Robidoux, Gerard E.; Davidson, B. Kent; Boutet, Patrick Y. D.; Langlois, Jean-Sebastien; Kalhok, David J.; Walker, Scott S., Remote tracking and communication device.
Derrick, Bruce; McNab, David S.; Larson, Stephen N. D.; Robidoux, Gerard E.; Davidson, B. Kent; Boutet, Patrick Y. D.; Langlois, Jean-Sebastien; Kalhok, David J.; Walker, Scott S., Remote tracking and communication device.
Derrick, David; Derrick, Bruce, Remote tracking device and a system and method for two-way voice communication between the device and a monitoring center.
Micka William Frank ; Novick Yoram,ILX, Storage system employing universal timer for peer-to-peer asynchronous maintenance of consistent mirrored storage.
Preston,Dan A.; Preston,Joseph D.; Leyendecker,Robert; Eatherly,Wayne; Proctor,Rod L.; Smith,Philip R., Synchronizer for use with improved in-band signaling for data communications over digital wireless telecommunications networks.
Urano,Osamu; Fujisawa,Teruhiko; Honda,Katsuyuki; Matsuzaki,Jun, Time correction device, timepiece having a time correction device, and time correction method.
Abbott,Mark A.; Cayo, Jr.,Jerald M.; Thompson,Darrel L.; Brykowski,Derek J.; O'Neill,Terrence J.; Stoffer,James F., Wireless synchronous time system with solar powered transceiver.
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