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:
May. 13, 1997
Filed:
Oct. 27, 1994
Toshio Yoshida, Tokyo, JP;
Mititaka Sisido, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A gain controller for use in mobile telephone system is disclosed. It is judged whether digital input data includes speech data or not. When the digital input data includes speech data, an integration energy value of the digital speech data for a predetermined time length is measured. The measured integration energy value is compared with a higher threshold value and a lower threshold value. A step level is set to a predetermined minus value, a predetermined plus value and '0' when the integration energy value is higher than the higher threshold value, lower than the lower threshold value and within a range between the higher and lower threshold values, respectively. The obtained step level is then added to the digital speech data.