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:
Mar. 12, 2019
Filed:
Jun. 08, 2018
Motorola Solutions, Inc., Chicago, IL (US);
Wai Mun Lee, Ipoh, MY;
Mohamad Noorazuan Fakhir Md Dali, Alor Setar, MY;
Peter J. Bartels, Loxahatchee, FL (US);
Syed Isa Syed Idrus, Bayan Lepas, MY;
Yee Boon Fu, Bayan Baru, MY;
Motorola Solutions, Inc., Chicago, IL (US);
Abstract
A method and apparatus to reduce communication device peak current for alert tones are disclosed. A portable device may include a processor coupled to a transceiver, a current limit trigger circuit, and an alert tone current limit controller. The transceiver may be configured to process an audio signal representing an alert tone. The processor may be configured to determine whether the transceiver is in a transmit state and whether an audio volume level setting exceeds a threshold. In response, the current limit trigger circuit may be configured to activate the alert tone current limit controller that may include a voltage scale controller configured to generate a reduced audio signal by adjusting a peak-to-peak amplitude of the audio signal representing the alert tone and an alert tone amplitude modulator configured to generate an adjusted audio signal by restricting the maximum amplitude of the reduced audio signal.