Qualcomm Incorporated

Bengt Stefan Gustavsson

Peter J Shah

Louis Dominic Oliveira

Hui-Ya Liao Nelson

Robert J Littrell

Vijayakumar Dhanasekaran

Meysam Azin

Joseph Robert Fitzgerald

Ganesh Kiran

Magesh Hariharan

Siva Pavan Kumar Mitnala

Tomer Saraf

John Michael Murray

William Wei-Ting Kuo

Mechanisms for detecting a voltage level on a data communication interface between a slave device and a host device are disclosed. Based on the detected voltage level, the slave device may respond to the host device on the data communication interface at the detected voltage level. The slave device may include a circuit configured to toggle between a first voltage level and a second voltage level to provide one of the first voltage level or the second voltage level corresponding to the detected voltage level on the data communication interface.

Voltage detector in data communication interface

Techniques for mute pattern injection for a pulse-density modulation microphone are described. In one or more implementations, a pulse-density modulation (PDM) microphone includes a transducer that receives a pressure wave and produces an analog signal that represents the pressure wave, an analog-to-digital converter (ADC) that receives the analog signal from the transducer and converts the analog signal into a digital PDM signal. The PDM microphone also includes a pattern generator that generates a digital mute signal, a controller that outputs control signals, and a multiplexer that receives the control signals, the digital mute signal, and the digital PDM signal. The multiplexer transmits the digital mute signal or the digital PDM signal, responsive to the control signals.

Mute pattern injection for a pulse-density modulation microphone

An interface unit of a mobile device coupled to an auxiliary device, the interface unit including: a first plurality of switches configured for power delivery to the auxiliary device; at least one isolation unit coupled to the first plurality of switches, the at least one isolation unit configured to isolate the multiple signals and to prevent disruption of data communication between the mobile device and the auxiliary device; and a second plurality of switches configured for the data communication between the mobile device and the auxiliary device, the second plurality of switches configured to bypass the at least one isolation unit.

Mobile device with multiple communication capabilities

A method includes generating a command at a first microphone and sending the command from the first microphone to a second microphone. The command is sent to the second microphone via a bus that is coupled to the first microphone and to the second microphone.

Reduced microphone power-up latency

A particular apparatus includes a coder/decoder (CODEC) including a first processor and a first buffer. The first processor is configured to analyze audio data samples to detect a keyword. The CODEC is configured to store a set of audio data samples at the first buffer. The apparatus also includes an application processor configured to receive the set of audio data samples from the CODEC via a bus and configured to initialize a speech recognition engine (SRE) based on the set of audio data samples. The application processor is configured to initialize the bus based on an indication from the CODEC that the keyword is detected.

System and method of analyzing audio data samples associated with speech recognition

A particular method includes determining, at an electronic device having a plug-in port, a plug-in type of an accessory connected to the plug-in port based on a comparison of an alternating current (AC) impedance at the plug-in port to a direct current (DC) impedance at the plug-in port.

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San Diego, CA, United States of America

Bengt Stefan Gustavsson