Patent Number: 6,295,248

Title: Electronic tide meter, method for calculating a high/low tide time and computer algorithm for executing the same

Abstract: The timing of a tide is calculated depending on a user-selected geographic region and calendar date. Tide data is stored in memory for each geographic region available for selection by the user. The timing of a tide is calculated by determining first and second tide level data using a tide level estimating equation. The first tide level data is dependent on the selected calendar date and the stored tide data that corresponds to the selected geographic region. The second tide level data having a time interval that is shorter in duration than a time interval of the first tide level is determined data again using the tide level estimating equation. The timing that a tide corresponding to the selected geographic region and calendar date occurs is then calculated dependent on the second tide level data. Thus, an accurate calculation of the timing of a desired tide is obtained for the user-selected geographic region and calendar date.

Inventors: Nakamura; Chiaki (Chiba, JP)

Assignee: Seiko Instruments Inc.

International Classification: G01D 7/00 (20060101); G04B 19/26 (20060101); G04B 19/00 (20060101); G09B 3/00 (20060101); G09B 3/12 (20060101); G04B 019/26 ()

Expiration Date: 09/25/2018