Patent №
US 4,904,992
Granted
1990-02-27
Filed 1989
Owner
MOTOROLA, INC., SCHAUMBURG, IL, A CORP. OF DE
+1 more
Lab
—
AI components
1
speech
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
07330324
A radio (10) measures and stores (16, 18) the ambient sound (or noise) level of its environment. When a message is received, the current noise (or sound) level is compared to a threshold (56). If the ambient noise level is such that an audible tone may not be heard by the radio user, a silent alert is automatically activated (62) regardless of whether the silent enunciator has been previously selected (enabled) by the radio user. In another aspect of the present invention, if the ambient noise level is such that an audible tone may be inappropriate (i.e., library, courtroom, or certain hospital areas), the silent alert is also automatically activated regardless of whether the silent enunciator is enabled so as not to disturb others.
AI classification
Ownership
MOTOROLA, INC., SCHAUMBURG, IL, A CORP. OF DE
assignment · 50570812
MOTOROLA, INC., A CORP. OF DE
assignment · 51950237
Assignors
GROTHAUSE, TIMOTHY A.
On an employer assignment, the assignors are typically the inventors.