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. 09, 1992
Filed:
Jul. 25, 1990
Applicant:
Inventor:
Yushi Naito, Kamakura, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364717 ;
Abstract
A digital noise generator for transmitting white noise during a period when a digital telephone speech signal is absent. The digital noise generator includes a pseudo-random bit sequence generator, an amplitude control circuit, and a PCM code-word-generating shift register. A pseudo-random bit sequence is generated by the pseudo-random bit sequence generator, an amplitude code-word is generated by the amplitude control circuit, and pseudo-random noise signal is generated and outputted by the PCM code-word-generating shift register on the basis of the pseudo-random bit sequence and the amplitude code-word.