Abstract: A control circuit for an optical disk drive includes a microphone, an analog-to-digital (A/D conversion) module, a control module, and a processing module configured to compare a digital representation of a spoken command from a user against the operation representation of the control module. If the processing module determines that a spoken command in the analog form, is equal to the digital signal, the control module acts on the command and controls the optical disk drive to change its status.

Abstract: Systems, methods, and apparatuses including computer program products for oscillator calibration. In one aspect, a calibration module includes a monitor submodule that evaluates operation of a system to determine if the system is operating in a first mode or a second different mode, where the second clock source is not operating as expected in the second different mode; a calibration engine that determines a calibration value using the first clock source and the second clock source in response to the system operating in the first mode; and a register that stores the calibration value; where the calibration engine calibrates the first clock source using the calibration value and provides to the system the calibrated first clock source as a timing reference instead of the second clock source as the timing reference, in response to the system operating in the second different mode.

Abstract: An optical disc player enters a sleep (low power consumption) mode when inactive for a predetermined time. The optical disc player includes a buffer RAM for storing index information read from a disc. A refresh circuit is connected to the buffer RAM to refresh the RAM. The refresh circuit includes a reference clock generator which generates a reference clock signal having a predetermined frequency from a reference clock using an oscillator. When the disc player enters the sleep mode, it issues a stop signal to the reference clock generator, which then stops generating the reference clock signal and produces a sleep mode clock signal having a frequency necessary to refresh the buffer RAM. A refresh signal generator circuit connected to the reference clock generator produces a refresh signal for the buffer RAM using the sleep mode clock signal.

Abstract: A CD player for reproducing signals stored on CD-OK and video compact disks (VCD) includes a first controller for controlling CD-OK reproduction; a second controller for outputting audio and video data for CD-OK reproduction and a control signal for VCD reproduction; a decoder for restoring compressed video and audio data; a first storage for storing control data for processing CD-OK signals during CD-OK reproduction and for storing control data for processing VCD during VCD reproduction; a second storage for storing data for a still screen and superposed data of the CD-OK disk during CD-OK reproduction and for storing video and audio data during VCD reproduction; a first digital-to-analog converter for converting the CD-OK video data output from the second controller into an analog image signal; a second digital-to-analog converter for converting image data output from the decoder into an analog image signal; a first switch for selecting one of the image signals output from one of the digital-to-analog conve