发明名称 |
METHOD OF AND SYSTEM FOR TRANSMITTING POSITIONAL DATA IN COMPRESSED FORMAT OVER WIRELESS COMMUNICATION NETWORK |
摘要 |
Latitude and longitude data are compressed by expressing the latitude and longitude not absolutely, but relative to a boundary point in a predetermined subdivision of the earth's surface. The compressed latitude and longitude data are transmitted over a wireless communication network along with the information identifying the cellular service area. Once the cellular service area is identified, the subdivision is identified through a lookup table, and the relative latitude and longitude data are converted into an absolute latitude and longitude.
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申请公布号 |
WO0028347(A9) |
申请公布日期 |
2000.09.28 |
申请号 |
WO1999US25284 |
申请日期 |
1999.10.28 |
申请人 |
CELLEMETRY LLC;COMER, EDWARD, I.;SANDIDGE, JERE, T. |
发明人 |
COMER, EDWARD, I.;SANDIDGE, JERE, T. |
分类号 |
G01S5/00;G01S5/14;(IPC1-7):G01S5/14 |
主分类号 |
G01S5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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