Patent ID: 8407450
Filing Date: 2013-03-26
Classification: G04R

Abstract:
1. An electronic device comprising: a reception unit that can receive satellite signals transmitted from positioning information satellites and acquire positioning information and time information; a time difference data storage means in which a data table and a memory address table are stored; and a time difference data acquisition means that acquires time difference data corresponding to positioning information acquired by the reception unit from the time difference data storage means; the data table comprising a first block of data having a first array of time difference data and a second block of data having a second array of time difference data that is different than the first array of time difference data; the memory address table storing the memory address of each of the first and second blocks of data, at least one of the first and second blocks of data being stored a plurality of times in the memory address table; and the time difference data acquisition means identifying a block of data corresponding to the positioning information acquired by the reception unit, reading the memory address corresponding to the block of data from the memory address table, acquiring the block of data indicated by the memory address in the data table, and acquiring the time difference data for the segment corresponding to the positioning information from the block of data.