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:
Aug. 01, 2017
Filed:
Nov. 01, 2011
Olafur M. Josefsson, Hafnarfjordur, IS;
Yang Pan, Shanghai, CN;
Olafur M. Josefsson, Hafnarfjordur, IS;
Yang Pan, Shanghai, CN;
INVENSENSE, INC., San Jose, CA (US);
Abstract
A method of operating a microphone system includes the steps of monitoring an I/O terminal to detect whether a signal on that terminal achieves a pre-defined logic level during a monitoring period. The I/O terminal and a second I/O terminal are configured to one of a hardware mode or a communications-bus mode depending on whether the pre-defined logic level is detected. A microphone system includes two I/O terminals and an automatic detection and mode switching circuit, as well as a communications bus interface circuit and a hardware control circuit. The mode automatic detection and mode switching circuit couples the two I/O terminals to either the communications bus interface circuit or the hardware control circuit in response to the logic level detected on one of the I/O terminals during a monitoring period.