Patent ID: 7474594
Filing Date: 2009-01-06
Classification: G01S,G04R

Abstract:
1. A time correction device comprising: a positioning unit that receives signals from positioning information satellites orbiting the Earth and determines the position of the positioning unit; a time correction information storage unit that stores time correction information for correcting time information produced by a time information generating unit; a time information correction unit that corrects the time information based on the time correction information; a time correction basis information storage unit that stores time correction basis information, which is basis information for generating the time correction information; a time correction information generating unit that generates the time correction information based on the time correction basis information; and a selection information storage unit for storing selection information; wherein the time correction basis information includes the selection information is used by the time correction information generating unit to select from the time correction basis information and apply the plural-satellite-referenced time correction basis information, the single-satellite-referenced time correction basis information, or the partial-satellite-signal-referenced time correction basis information.