Abstract: A signal reconstruction technique is used to correct for wow and flutter in analog audio recordings. Elements of the recording are used to generate a signal for correcting the output. Involves locating modulated entities such as bias signal (e.g. frequency-modulated, amplitude-modulated, or phase-modulated entities) in the recording, extracting them, and utilizing them as a carrier to synchronize to a master clock, using the irregularity of the anomaly to indicate the speed and pitch information to be corrected. A carrier frequency is determined and applied to a digitized form of the recording. This may be performed even in the absence of a prescribed reference code or tone, such as a pilot tone laid down purposefully at the moment of recording. In the case of signals presumed to have an error in the carrier, a corresponding signal is buffered, and in the case of a presumed error, a last known signal is used for the duration of the error.

Abstract: External drive components and computers having external drive components with disabling systems that restrict access to software and other computer-readable media in the external drive components only to authorized users. In one embodiment, a computer includes a processor, a power supply coupled to the processor, and an external drive component. The external drive component can include a head capable of reading and/or writing data on a computer-readable medium, a holder configured to hold the computer-readable medium in an operating position in which the head can read data from the computer-readable medium, and a drive assembly coupled to the holder. The drive assembly moves the holder and/or the computer-readable medium from the operating position to a load/unload position in which the computer-readable medium is accessible to a user. The computer can also include a disabling system coupled to the drive assembly.

Abstract: A stacked printed circuit board memory module in which a plurality of daughter circuit boards can be stacked onto a primary circuit board. The primary board and each of the plurality of daughter boards have electronic memory ICs mounted on the respective surfaces. The primary board and each of the daughter boards have mounted connectors so that the boards can be electronically and mechanically interconnected with another board.

Abstract: A stacked printed circuit board memory module in which a plurality of daughter circuit boards can be stacked onto a primary circuit board. The primary board and each of the plurality of daughter boards have electronic memory ICs mounted on the respective surfaces. The primary board and each of the daughter boards have mounted connectors so that the boards can be electronically and mechanically interconnected with another board.

Abstract: A stacked printed circuit board memory module in which a plurality of daughter circuit boards can be stacked onto a primary circuit board. The primary board and each of the plurality of daughter boards have electronic memory ICs mounted on the respective surfaces. The primary board and each of the daughter boards have mounted connectors so that the boards can be electrically and mechanically interconnected with another board.

Abstract: A stacked printed circuit board memory module in which a plurality of daughter circuit boards can be stacked onto a primary circuit board. The primary board and each of the plurality of daughter boards have electronic memory ICs mounted on the respective surfaces. The primary board and each of the daughter boards have mounted connectors so that the boards can be electrically and mechanically interconnected with another board.

Abstract: A sequential logic circuit includes means for checking, while the circuit is in operation, that it is stepping correctly from one state to the next. The current state of the circuit is encoded as X0-X3. That encoded value is compared with a predicted value Y0-Y3 derived in response to the previous state of the circuit itself and those signals that cause the transition from the previous to the current state. If the two do not match the circuit has not stepped to the correct state. Reduction in hardware is achieved by allowing certain states to share the same encoded value.