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. 04, 1986
Filed:
Dec. 17, 1982
Takeo Sekino, Atsugi, JP;
Masashi Takeda, Isehara, JP;
Sony Corporation, Tokyo, JP;
Abstract
An analog-to-digital converter for converting an analog input signal to a digital output signal with m upper bits and n lower bits includes 2.sup.m+n -1 resistors establishing 2.sup.m+n reference voltages for comparison with an amplitude of the analog input signal, 2.sup.m -1 voltage comparing circuits for comparing the analog input signal with 2.sup.n step-by-step reference voltages, a first encoder for encoding the output signals of the 2.sup.m-1 voltage comparing circuits for generating m upper bits of the digital output signal, a matrix circuit having 2.sup.m (2.sup.n -1) voltage comparators for comparing the analog input signal with the remaining reference voltages of the 2.sup.m+n references voltages, the other voltage comparing circuits being supplied output signals of the matrix circuit and a second encoder for encoding output signals of the other voltage comparing circuits for generating n lower bits of the digital output signal.