Fairchild Semiconductor Corporation

Patriot Funding, LLC

Agere Systems Inc.

James A Siulinski

Kenneth Patrick Snowdon

Steven M Waldstein

Peter Chadbourne

Gregory A Maher

John E Scoggins

Greg Maher

This document discusses, among other things, an electronic circuit and method for defaulting to a valid battery supply to power an electronic device. In an example, an electronic circuit can be configured to receive information about the battery supply (e.g., an internal battery), such as the battery supply voltage (V), and to determine if the battery supply is valid or invalid using the received information (e.g., comparing the Vto a threshold). If Vis valid, the electronic device can default to receiving power from the battery supply. If Vis invalid, the electronic device can receive power from another power supply, such as an external supply.

Vpower switch

VBUS power switch

A detection circuit can be configured to receive a digital value from an identification register and to determine a resistance at a conducting terminal of an audio or video jack plug using the digital value. The detection circuit can include a current source that outputs a current according to the digital value from the identification register and a comparator that compares a reference voltage to a voltage created by the current source across the resistance at the conducting terminal of the audio or video jack plug. A control logic circuit can be configured to store the digital value in the identification register, generate an interrupt signal to cause a processor to read the digital value, and identify a function of an accessory device including the audio or video jack plug, when the detection circuit determines the resistance at the conducting terminal of the audio or video jack plug.

Detecting accessories on an audio or video jack

This document discusses, among other things, a system and method for serializing a video signal and providing non-packet-based serialized video information to a physical Universal Serial Bus (USB) interface and, in certain examples, receiving the non-packet-based serialized video information from the physical USB interface, deserializing the received non-packet-based serialized video information, and providing a high definition output signal to a video port (e.g., an HD video port, such as HDMI, DisplayPort, etc.) using the deserialized video information.

Universal serial bus (USB) to digital video

A system including a digital camera and remote display glasses. The remote display glasses include a frame, at least one display, and a first and a second temple configured to support the display proximate to at least one of the user's eyes when the remote display glasses are worn on the user's head. The digital camera includes a lens configured to capture light, an electronic viewfinder; a video processor configured to generate an image, and a camera switch configured to selectively transmit the image from the video processor to the electronic viewfinder or the display of the remote display glasses.

Remote display glasses camera system and method

This document discusses, among other things, a system and method for deserializing non-packet-based video information received using a physical Universal Serial Bus (USB) interface and providing a high definition output signal to a video port (e.g., an HD video port, such as HDMI, DisplayPort, etc.) using the deserialized video information.

This document discusses, among other things, a system and method for switching serialized video information (e.g., non-packet-based video information) and Universal Serial Bus (USB) information (e.g., packet-based information) to a common output (e.g., to a physical USB interface).

An apparatus comprises an audio or video jack connector configured to receive an audio or video jack plug of a separate device, a detection circuit in electrical communication with the connector, and a processor communicatively coupled to the detection circuit. The connector includes an electrical contact for connection to a conducting terminal of the plug. The detection circuit is configured to determine a resistance at the conducting terminal. The resistance is a resistive load of the separate device at the conducting terminal of the plug. The processor is configured to identify a function of the separate device according to the determined resistance, and configure an operation of the apparatus according to the determined function.

Method of detecting accessories on an audio jack

An apparatus comprises a digital image sensor, a communication port, a detection circuit and a processor. The detection circuit is configured to detect a change in electrical resistance at a connector of the communication port. The processor is configured to initiate an operation of the apparatus according to the detected change in resistance.

Camera shutter control through a USB port or audio/video port

An optical transmission system comprises an electrical source and an electrical-to-optical converter. The electrical source is adapted to provide an electrical signal at an output thereof. The electrical-to-optical converter has an input coupled to the output of the electrical source and is operative to convert the electrical signal to a corresponding output optical signal. The electrical source comprises a pre-emphasis circuit or other electrical signal equalization circuitry configurable to control a waveform of the electrical signal so as to produce a desired level of jitter in the output optical signal.

Optical signal jitter reduction via electrical equalization in optical transmission systems

An automated dynamic threshold testing system using an oscilloscope and personal computer with an automated testing algorithm for dynamic threshold condition determination within a digital logic device. The system provides a cost-effective alternative to conventional human detection of the threshold condition. The automated testing utilizes digitization of waveform data from the oscilloscope and provides fast storage, retrieval, and analysis of complex and numerous threshold conditions. Reproduction of the testings is easily performed with advantageous applications in debugging and diagnostic procedures.

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Westbrook, ME, United States of America

James A Siulinski