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    Detection of double bit errors and correction of single bit errors in a multiword array
    2.
    发明授权
    Detection of double bit errors and correction of single bit errors in a multiword array 有权

    公开(公告)号：US10552260B2

    公开(公告)日：2020-02-04

    申请号：US15984108

    申请日：2018-05-18

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Rahul Gawde ,  Michael A. Kost ,  Alvin C. Storvik

    IPC: G06F11/10 ,  H03M13/15 ,  G11C29/52 ,  H03M13/19 ,  H03M13/29

    Abstract: An error correction code for an array of N words of M bits each may be generated by: (i) for each word of the N words, computing a respective set of checkbits for single-error correction of such word; (ii) computing a set of bit-position-related checkbits comprising a bitwise logical exclusive OR of all of the sets of checkbits for single-error correction of the N words; (iii) for each word of the N words, computing a respective parity for the respective set of checkbits and the word itself in order to form a vector of N parity bits; (iv) computing a set of word-related checkbits for single-error correction of the vector of N parity bits; and (v) computing a cumulative parity bit comprising a parity calculation of the set of bit-position-related checkbits, the set of word-related checkbits, and the vector of N parity bits.

    Alternating current (AC) load identification technique using a search algorithm
    6.
    发明授权
    Alternating current (AC) load identification technique using a search algorithm 有权

    公开(公告)号：US09712906B1

    公开(公告)日：2017-07-18

    申请号：US15099340

    申请日：2016-04-14

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Shatam Agarwal ,  Alvin C. Storvik

    IPC: H04R29/00 ,  H04R1/10 ,  H03M1/66

    CPC classification number: H04R1/1041 ,  H03M1/48 ,  H04R3/04 ,  H04R5/04 ,  H04R29/001

    Abstract: An electronic device may be configured to identify a load coupled to the device. The device may measure direct current (DC) and/or alternating current (AC) characteristics of the load to identify the load. The device may then take action based on the identification of the load. For example, a specific transducer may be identified as coupled to the electronic device and an appropriate equalization curve applied to an audio output of the device. The measurement of characteristics of the load may include controlling a reference generator according to a search algorithm, such as a step ramp or binary search, to identify the load. An analog-to-digital converter (ADC) may operate through the search algorithm to provide feedback to digital circuitry regarding how to proceed through the search algorithm to identify the load.

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