New Media Corp.

Davin Stockwell

Rodney J Corder

Scott Coleman

A plug-in computer card includes an audio generator circuit having an audio analog output and an enclosure around the audio generator circuit. An audio speaker element is contained within the enclosure, and is in electrical communication with the audio analog output of the audio generator circuit. The audio speaker element is preferably a piezoelectric element fixed to a cover of the enclosure or a loudspeaker mounted within the enclosure. There is an input/output connector fixed to the enclosure and in electrical communication with the audio generator circuit. The card is also provided with a disabling circuit that electronically disables the audio speaker element responsive to an electronic signal.

Plug-in computer card with internal audio speaker element

A system has the capability to determine the termination status of a data-communication bus therein. The system includes a source of a bus signal from a bus, a selectively activated current sink that communicates with the source of the bus signal, with a detection activation input, and a source of a detection signal in communication with the detection activation input of the current sink. There is a source of a first reference voltage, and a source of a second reference voltage, the second reference voltage being less than the first reference voltage. A high-termination comparator has an upper voltage input that communicates with the source of the bus signal, a lower voltage input that communicates with the source of the first reference voltage, and a logical high-termination output. A low-termination comparator has a lower voltage input that communicates with the source of the bus signal, an upper voltage input that communicates with the source of the second reference voltage, and a logical low-termination output. The detection circuitry is activated by applying a voltage through the source of the detection signal when the bus is idle and a near-end, local termination of the bus is disconnected, and monitoring the logical high-termination and the logical low-termination outputs.

Growing community of inventors

Irvine, CA, United States of America

Davin Stockwell