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:
Feb. 16, 1993
Filed:
Nov. 26, 1991
Masashi Yonemaru, Chiba, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A serial-to-parallel type A/D converter includes a resistance array, a plurality of comparators for upper bits, a plurality of comparators for lower bits, an encoder for upper bits, an encoder for lower bits and an adder. The resistance array divides a predetermined reference voltage to generate upper reference voltages, and by dividing the step width of the upper reference voltage, generates lower reference voltages. The plurality of comparators for the upper bits compare the analog input signal with the upper reference voltages, and applies the result of comparison to the encoder for the upper bits. The encoder for the upper bits calculates an estimated value of the upper bits based on the result of comparison, and select second reference voltages in the range provided by adding .+-.1/2 LSB to 1LSB corresponding to the estimated value of the upper bits. The plurality of comparators for the lower bits calculate the lower bits and a correcting bit based on the selected second reference voltages. The adder adds the correcting bit to the estimated value of the upper bits to correct the estimated value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile