摘要:
Methods, software, and apparatuses for reading from and/or writing to an optical storage medium. The methods generally include steps for reading a region of an optical storage medium to produce a readback signal, processing predetermined pattern data to produce one or more measurement instructions, measuring one or more characteristics of the readback signal in response to the measurement instructions to produce one or more measurement results, and further processing the readback signal in accordance with one or more of the measurement results. Thus, the ability to flexibly set test parameters and to quickly and accurately test the write characteristics of a recordable or re-writable optical storage medium is provided.
摘要:
Methods, software, and apparatus for the calibration of writing characteristics for writing to an optical storage medium, and methods of encoding calibration pattern data and calibration instructions are disclosed. The method of calibration generally includes the steps of (a) receiving pattern data and instructions synchronized with the pattern data, (b) writing the pattern data to the optical storage medium in accordance with the instructions, (c) reading a readback signal corresponding to the pattern data from the optical storage medium, (d) processing the readback signal in accordance with the instructions, and (e) determining a value of a writing characteristic for writing data to the optical storage medium based at least in part on the readback signal. The method provides the ability to flexibly set test parameters and to quickly and accurately test the write characteristics of a recordable or re-writable optical storage medium.
摘要:
A light emitting diode (LED) lighting system includes a first string of first LEDs emitting light having a first color. A second string of second LEDs emits light having a second color and connected in series with the first string of first LEDs; A first switch and a second switch are connected in series. A regulator module is configured to modulate the first switch and the second switch to provide a desired current ratio. The desired current ratio corresponds to a ratio of a first current through the first string of first LEDs to a second current through the second string of second LEDs.
摘要:
Systems, methods, and other embodiments associated with optimizing the use of replaceable memory cards and onboard memory as storage for data in cache are described. According to one embodiment, an apparatus includes a cache space manager configured to cause a cache processor to store data of a removable memory card of a memory device to an onboard memory of the memory device. The apparatus also includes an error rate monitor configured to monitor operating parameters of the removable memory card and to activate a cache processor to store the data from the removable memory card to the onboard memory when the operating parameters meet predetermined criteria.
摘要:
A system includes a position detection module configured to detect at least a first position indicator and a second position indicator corresponding to a label side of an optical disc. A write clock adjustment module is configured to determine a number of cycles of a write clock that occur between the first position indicator and the second position indicator, determine a difference between the number of cycles of the write clock and a desired number of cycles of the write clock, and adjust a frequency of the write clock based on the difference.
摘要:
A charge-balancing system includes N circuits and a control module, where N is an integer greater than or equal to 1. Each of the N circuits includes first and second switches connected in series and an inductance having a first end connected between the first and second switches. The control module outputs control signals to control the first and second switches. A second end of the inductance of a first one of the N circuits is connected between two cells of a first pair of 2N series-connected cells of a battery stack. The first and second switches of the first one of the N circuits are connected in parallel to the first pair of 2N series-connected cells.
摘要:
A method and system for determining a respective threshold voltage of each of a plurality of transistors in a memory array. The method includes: applying a ramp voltage to gates of the plurality of transistors, wherein the ramp voltage is configured to increase based on an incrementing digital code; as the ramp voltage is being applied, generating a respective control signal in response to sensing a predetermined threshold current along a respective bitline in the memory array, wherein each transistor in the memory array is in communication with a respective bitline in the memory array; and for each transistor in the memory array, latching a current value of the incrementing digital code in response to the respective control signal corresponding to the transistor being generated. The current value of the incrementing digital code latched by each register corresponds to the threshold voltage of the corresponding transistor.
摘要:
A multi-level solid state non-volatile memory array has memory cells that store data using a first number of digital levels. A controller of the memory array encodes a series of data bits to generate a series of encoded data bits, and converts the series of encoded data bits into a series of data symbols. The controller sends, to the memory array, a stored series of data symbols based on the series of data symbols for storage in a memory cell of the multi-level solid state non-volatile memory array. The controller generates an output signal based on data associated with the stored series of data symbols. The output signal is characterized by a second number of digital levels greater than the first number of digital levels. The controller outputs a series of output data symbols based on the output signal.
摘要:
Methods, systems and computer program products for compensating repeatable timing variations associated with a spindle motor are described. Specifically, a repetitive error correction factor may be determined using a computational model which predicts timing variations. The correction factor can then be used to cancel the effect of the actual timing variations upon the spindle motor.
摘要:
A system including a processor, a first-in first-out (FIFO) module, and an arbiter module. The processor includes i) a processor core and ii) a memory. The FIFO module is configured to receive streaming data, output the streaming data to the memory of the processor, and selectively generate a control signal. The arbiter module is configured to adjust, based on the control signal, a priority in which at least one of the processor core and the FIFO module accesses the memory of the processor.