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:
Nov. 07, 1989
Filed:
Dec. 30, 1987
Applicant:
Inventors:
Robert F Young, Santa Cruz, CA (US);
Vladimir Kraz, Santa Cruz, CA (US);
Assignee:
Plantronics, Inc., Santa Cruz, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379399 ; 379395 ; 379387 ;
Abstract
Apparatus is provided for interfacing a voice communication instrument, e.g. headset, to a communication link, e.g. a telephone line. The interface includes a transmit channel having amplification, frequency shaping and voice switching to suppress background noise. The interface includes a receive channel having compression limiting as a function of the received signal amplitude and frequency. The interface further includes a power-down circuit and a low battery indicator.
Young, Robert. (1989). Voice communication link interface apparatus (U.S. Patent No. 4879746). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4879746
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile