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:
Feb. 28, 1978
Filed:
Sep. 02, 1976
Blake Lane Wattenbarger, Fair Haven, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
The loudness of a telephone set ringer is controlled by audible ambient noise in the vicinity of the telephone set to match the ringer intensity level to the ambient noise level. During an on-hook state of the telephone set, the transmitting microphone is utilized to detect the ambient noise which is then utilized to control the loudness of the ringer. In one illustrative embodiment, ring bursts which contribute to the ambient noise level cause build-up of ringer intensity starting at a level appropriate to the initial ambient noise level. In another embodiment, noise detection is terminated when the set is rung to maintain ringer intensity at the same level.