31.
    发明专利
    未知

    公开(公告)号:DE69804193D1

    公开(公告)日:2002-04-18

    申请号:DE69804193

    申请日:1998-12-01

    Inventor: MYER ROBERT EVAN

    Abstract: The present invention provides an improved pilot detection technique for a control system (200) comprising an electrical circuit (108) that produces distortion and which applies the pilot signal to the electrical circuit and uses information obtained from the pilot signal to cancel the distortion from the electrical circuit.

    NESTED FEED FORWARD DISTORTION REDUCTION SYSTEM

    公开(公告)号:CA2284333C

    公开(公告)日:2002-04-02

    申请号:CA2284333

    申请日:1999-09-29

    Inventor: MYER ROBERT EVAN

    Abstract: A nested feed forward distortion reduction system, which reduces the distortion from a main amplifier on a main signal path, uses a nested feed forward arrangement for the correction amplifier to reduce the distortion produced from the correction amplifier. In reducing the distortion from the correction amplifier(s) and using progressively higher quality correction amplifier(s), the nested feed forward arrangement produces an improved, more stable representation of the distorti on from the main amplifier, thereby alleviating the need for variable gain and/or phase control in producing amplified signal with reduced distortion.

    36.
    发明专利
    未知

    公开(公告)号:BR0003484A

    公开(公告)日:2001-04-03

    申请号:BR0003484

    申请日:2000-08-10

    Abstract: A method is provided of adapting an adjustment value which changes the relative gain or phase between combining signals. Said method is characterized by changing the adjustment resolution to obtain an adjustment value based on one of at least error signal history or an adaptation threshold.

    METHOD AND APPARATUS FOR AN AUTOMATIC PREDISTORTION SYSTEM

    公开(公告)号:CA2315848A1

    公开(公告)日:2001-02-18

    申请号:CA2315848

    申请日:2000-08-09

    Inventor: MYER ROBERT EVAN

    Abstract: Method and apparatus for substantially eliminating distortion produced by a processing circuit where the distortion produced by a first circuit with similar characteristics as the processing circuit is modified and the modified distortion is applied to the processing circuit. The distortion produced by the first circuit is modified based on information derived from distortion produced by the processing circuit. The modified distortion, when applied to the processing circuit, combines destructively with distortion produced by the processing circuit.

    39.
    发明专利
    未知

    公开(公告)号:BR9907499A

    公开(公告)日:2000-10-03

    申请号:BR9907499

    申请日:1999-12-17

    Inventor: MYER ROBERT EVAN

    Abstract: A computer system may include multiple processing nodes, one or more of which may be coupled to separate memories which may form a distributed memory system. The processing nodes may include caches, and the computer system may maintain coherency between the caches and the distributed memory system. Particularly, the computer system may implement a flexible probe command/response routing scheme. The scheme may employ an indication within the probe command which identifies a receiving node to receive the probe responses. For example, probe commands indicating that the target or the source of transaction should receive probe responses corresponding to the transaction may be included. Probe commands may specify the source of the transaction as the receiving node for read transactions (such that dirty data is delivered to the source node from the node storing the dirty data). On the other hand, for write transactions (in which data is being updated in memory at the target node of the transaction), the probe commands may specify the target of the transaction as the receiving node. In this manner, the target may determine when to commit the write data to memory and may receive any dirty data to be merged with the write data.

    40.
    发明专利
    未知

    公开(公告)号:BR9904249A

    公开(公告)日:2000-08-29

    申请号:BR9904249

    申请日:1999-09-20

    Abstract: A control system comprising an electrical circuit that produces distortion where the electrical circuit has a frequency band of operation. A pilot modulated carrier signal is generated and is cause to traverse across the frequency band of operation of the electrical circuit. Information obtained from the traversing pilot modulated carrier signal when it is determined that there is no interference between any signal applied to or generated by the electrical circuit. The information is used by the control system to substantially cancel the distortion.

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