Sigmatel, Inc.

Tempo Semiconductor, Inc.

Daniel Bogard

Theodore M Burk

David T Roach

Shun Qian

Qichang Wu

Roy L Vargas

Leonard J DiSanza

An audio processing integrated circuit chip, such as codec chip, includes at least one port output circuit configured to generate an audio signal to drive an external audio device and a PC beep circuit configured to receive a PC beep signal and to apply the received PC beep signal to an input of the at least one port output circuit. The chip further includes a control circuit configured to detect activity of the PC beep signal and to enable and/or disable the at least one port output circuit responsive to the detected activity.

Audio processing devices with port output circuits controlled by PC beep signal activity

A method and apparatus for processing content data includes processing that begins by receiving modulated data via a channel that couples a content display device to a content processing device. The processing continues by introducing the content data onto the channel and separating the modulated data from the content data. The processing then continues by retrieving data from the modulated data, wherein the content display device modulates the modulated data. The processing continues by processing the data to produce presentation information. The processing then continues by processing the content data for presentation on the external content display device based on the presentation information.

Method and apparatus for processing content data

A digital microphone interface includes a phase generator for generating a phase signal. A clock generator produces a digital microphone clock at a selected frequency based on the frequency select signal, and supplying the digital microphone clock to a digital microphone. A first data latch, operably coupled to the phase generator, produces a stream of first data from a first channel of the digital microphone, based on a phase select signal and the phase signal.

Digital microphone interface, audio codec and methods for use therewith

The programmable analog input/output integrated circuit system includes a plurality of integrated circuit pins, an analog input/output circuit, a control module, and a switching module. The analog input/output circuit is coupled to the plurality of pins and determines the input/output status of each of the pins. The control module generates an I/O control signal and a switching control signal based on the input/output status of the integrated circuit pins. The I/O control signal is provided to the analog I/O circuit, which configures itself as an input or output based on the I/O control signal. The control module provides the switching control signal to the switching module, which configures itself to couple the analog input and/or analog output to corresponding functional circuitry of the corresponding integrated circuit.

Programmable analog input/output integrated circuit system

A audio codec includes a first analog to digital converter for producing a first one-bit data stream, a second one-bit data stream is received from a digital microphone. A selection module produces a one-bit output signal that is the first one-bit data stream when a selection signal is in a first state, and produces a the one-bit output signal that is the second one-bit data stream when the selection signal is in a second state. A decimation and filter module produces a down sampled signal based on the one-bit output signal.

Audio codec adapted to dual bit-streams and methods for use therewith

A method and apparatus for presenting content data and processing data includes processing that begins by receiving modulated display data and content data via a channel coupling an external content processing device to a content display device. The processing continues by separating the modulated data from the content data. The processing proceeds to retrieving display data from the modulated data and processing the display data for display. The processing continues by processing the content data for presentation.

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Daniel Bogard