Source: http://www.google.com/patents/US6798376?ie=ISO-8859-1&dq=7389243
Timestamp: 2015-03-28 14:22:52
Document Index: 451622848

Matched Legal Cases: ['art 7', 'art 8', 'art 9', 'art 1', 'art 10', 'art 8', 'art 9', 'art 1']

Patent US6798376 - Mobile communication apparatus and position detection method thereof - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsWhen position measurement accuracy of the present position which the base station distance and position measurement part measures from radio waves coming from base stations is not good, a GPS distance and position measurement part measures the present position from radio waves coming from GPS satellites....http://www.google.com/patents/US6798376?utm_source=gb-gplus-sharePatent US6798376 - Mobile communication apparatus and position detection method thereofAdvanced Patent SearchPublication numberUS6798376 B2Publication typeGrantApplication numberUS 10/125,526Publication dateSep 28, 2004Filing dateApr 19, 2002Priority dateApr 20, 2001Fee statusLapsedAlso published asEP1251362A2, EP1251362A3, US20020175854Publication number10125526, 125526, US 6798376 B2, US 6798376B2, US-B2-6798376, US6798376 B2, US6798376B2InventorsTakehiko Shioda, Manabu NoharaOriginal AssigneePioneer CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (8), Non-Patent Citations (1), Referenced by (8), Classifications (19), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetMobile communication apparatus and position detection method thereof
The cellular phone 100 is provided with a GPS receiving antenna ANT2 for receiving radio waves coming from GPS satellites and a GPS receiving part 7 for reproducing data DGPS (hereinafter called �GPS data�) sent by the GPS satellites by demodulating an output of the GPS receiving antenna ANT2.
There are provided a GPS distance and position measurement part 8 for measuring a position of the cellular phone 100 from the GPS data DGPS, a base station distance and position measurement part 9 for measuring a position of the cellular phone 100 from data DBASE (hereinafter called �base station data�) demodulated by the sending and receiving part 1, and a position measurement accuracy analysis part 10 for finally obtaining a position of the cellular phone 100 from a position measurement result obtained by the GPS distance and position measurement part 8 and a position measurement result obtained by the base station distance and position measurement part 9.
First, time information included in the demodulation data DBS1, DBS2, DBS3 supplied by the sending and receiving part 1 is detected, and time at which a radio wave is emitted from each the base station (hereinafter called �base station radio wave emission time�) is acquired. In other words, time information with very high accuracy indicating time at which each the base station emits a radio wave is included in the radio wave coming from each the base station, so that the base station radio wave emission time every base station is acquired from each the time information included in the demodulation data DBS1, DBS2, DBS3 obtained by the demodulation processing described above.
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