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:
Mar. 07, 1995
Filed:
Feb. 22, 1993
Applicant:
Inventors:
Shinichirou Miyazaki, Kanagawa, JP;
Akira Shirahama, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341200 ;
Abstract
A noise shaping circuit in which the second significant bit of quantization input data in 2's complement representation, supplied to a quantizer, is taken out after complementation by an inverter 30, while the second significant bit and following bit or bits are taken out as such without complementation, for producing a quantization is error, which is subtracted from an input signal to render it possible to abbreviate an operation of finding the quantization error. A sole inverter may be used in substitution for a circuit portion employed for finding the quantization error for significantly diminishing the circuit scale.