The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 1977
Filed:
Jun. 25, 1976
Richard Edwin Watt, San Diego, CA (US);
Cubic Corporation, San Diego, CA (US);
Abstract
Ambiguities in counts contained in overlapping bit positions of fine and coarse data measurement digital signals that are combined to provide a composite digital signal representative of a measured quantity, such as distance or angle, are resolved by comparing the counts in the most significant overlapping bit position of the fine and coarse data signals and comparing the counts in the next lesser significant overlapping bit positions of the fine and coarse data signals; and by adjusting the count in the non-overlapping more significant bit positions of the coarse data signal in accordance with such comparisons. The count in the non-overlapping more significant bit positions of the coarse data signal is reduced by one bit when the count in the most significant overlapping bit position of the fine data signal is greater than the count in the most significant overlapping bit position of the coarse data signal, and the count in the next lesser significant bit positions of the fine data signal is greater than the count in the next lesser significant bit positions of the coarse data signal; and the count in the non-overlapping more significant bit positions of the coarse data signal is increased by one bit when the respective compared counts in the fine data signal are both less than the corresponding compared counts in the coarse data signal.