Method and system for a plurality of mobile units to locate one another
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United States of America Patent
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Mar 15, 2005
Grant Date -
Oct 10, 2002
app pub date -
Apr 9, 2001
filing date -
Apr 9, 2001
priority date (Note) -
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Abstract
A method and system whereby two mobile units can locate each other is presented. A user connects an interface device, such as a personal digital assistance (PDA), a wireless phone, a laptop, or a pager, to a mobile unit. The mobile unit regularly obtains its location through a location-determining technology (e.g., GPS) and sends the location to a service provider computer. The service provider computer maintains a database of the current location of all the mobile units, and provides the location of mobile units to each of the mobile units. The mobile unit communicates with the service provider wirelessly through a communication network and a data network, for example the Internet. A user of the mobile unit can send messages to other users with a location stamp, which indicates the location of the message sender's mobile unit. In addition, a user can send a request to be notified when a target mobile unit reaches a reference point. The reference point may be defined relative to the location of the requester. Alternatively, the reference point may be an address or a landmark. Upon receiving the request, the service provider computer tracks the distance between the target mobile unit and the reference point, and sends a notification to the requester when the target mobile unit reaches the reference point.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- TRIMBLE NAVIGATION LIMITED
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Fan, Carey | Fremont, CA | 1 | 388 |
Fan, Roderic C | Fremont, CA | 2 | 485 |
Mleczko, David | San Jose, CA | 5 | 516 |
Nguyen, Kenny | Mountain View, CA | 4 | 388 |
Sandhu, Kulbir S | Fremont, CA | 22 | 1950 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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