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:
Jun. 16, 1998
Filed:
Feb. 29, 1996
Akira Sogo, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A mixing circuit for synthesizing plural .DELTA..SIGMA. modulated data generated simultaneously with a bit rate F to single mixed data includes a slot determining section for dividing time length corresponding to 1-bit period of the .DELTA..SIGMA. modulated data into a number N which is of the same number as the plural .DELTA..SIGMA. modulated data, and a time division multiplex section for assigning in order the plural .DELTA..SIGMA. modulated data to the 1-bit period at a bit rate N*F on a time shared basis. The obtained mixed data can be converted to linear PCM data with a single decimation circuit. By increasing the bit rate of the mixed data by N times the bit rate F of the .DELTA..SIGMA. modulated data, a total gain can be maintained at a constant value irrespective of a change in the number of data to be synthesized.