Abstract: A semiconductor device (and method for forming the device) includes a silicon-on-insulator (SOI) wafer formed on a substrate surface. An isolation trench in the wafer surface surrounds alternating p-type trenches and n-type trenches and electrically isolates the device from the substrate, thereby allowing the device to be effectively utilized as a differential detector in an optoelectronic circuit.

Abstract: A computer-implemented method (and system) for composing music, includes launching a menu based on an input from an input device, selectively inputting musical notation with the input device based on the menu items and unconstrained handwriting by a composer, and displaying the musical notation.

Abstract: A circuit (and method) for correcting offset voltage in high-gain differential amplifier chains includes a detector element for detecting an offset voltage and a current mirror for generating an offset correction voltage. The circuit further has a current switch which outputs the offset correction voltage into the correct arm of the amplifier chain and a logic element which clocks the circuit, inputs a signal from the detector element and outputs a signal to the current switch.

Abstract: A portable computing device includes a processing unit coupled with a keyboard, a recording medium, and a display. The keyboard and the recording medium form portions of a support structure of the device and are generally directed in different directions. The recording medium is configured to receive input from a stylus operated by a user. The display is movable (e.g., pivotable and/or translatable) about the support structure to selectively suit use of the display in conjunction with the keyboard or use of the display in conjunction with the stylus and the recording medium. An elongatable arm can serve to connect the display with the support structure.