公开(公告)号：US09749740B2

公开(公告)日：2017-08-29

申请号：US14943844

申请日：2015-11-17

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： German Borkhovik ,  Mark A. Prudden ,  Daniel Grobe Sachs

IPC: H04R3/00 ,  H04R29/00

CPC classification number: H04R3/007 ,  H04R29/001 ,  H04R29/004 ,  H04R2430/01

Abstract: A method and apparatus for operation of a remote speaker microphone over an expanded temperature range. By monitoring a temperature of the communication device, a temperature sensitive microprocessor can be disabled above a predetermined extreme temperature, thereby allowing control of an audio path of the communication device to be modified. Microphone and speaker signals of the communication device can be switched or rerouted to an electronic path capable of operating above the predetermined extreme temperature for expanded operation while previous microprocessor controlled digital and analog audio circuits are shut down.