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7 条记录 (耗时 0.011 秒)

    Mono/stereo switching circuit
    4.
    发明授权
    Mono/stereo switching circuit 失效
    单声道/立体声切换电路

    公开(公告)号：US5515442A

    公开(公告)日：1996-05-07

    申请号：US538983

    申请日：1995-10-05

    申请人： Joseph J. Dombrowski, Jr.

    发明人： Joseph J. Dombrowski, Jr.

    IPC分类号： H04R5/04 ,  H04H1/00 ,  H04H40/81 ,  H04S1/00 ,  H04S7/00 ,  H04H5/00

    CPC分类号： H04H60/04 ,  H04R5/04 ,  H04H40/81

    摘要： A mono/stereo switching circuit wherein first, second, and third switches operate in circuit which is arranged so that (1) when the first switch is engaged, and the mono/stereo switch is engaged, the signal at a first mono input is provided to both of a pair of left and right output channels; (2) when the second switch is engaged and the mono/stereo switch is not engaged, the signal at a second mono input is provided to both of the pair of left and right output channels; and (3) when the input signal is a stereo signal at the first and second inputs, and either of the first and second switches is engaged, and the mono/stereo switch is engaged, the input signal at the first input terminal is provided at the left channel output while the input signal at the second input terminal is provided at the right channel output.

    摘要翻译： 一种单声道/立体声切换电路，其中第一，第二和第三开关在电路中操作，电路被布置成使得（1）当第一开关接合并且单声道/立体声开关接合时，提供在第一单声道输入处的信号 一对左右输出通道; （2）当第二开关接合并且单声道/立体声开关未接合时，第二单声道输入处的信号被提供给左右一对输出声道; 和（3）当输入信号是在第一和第二输入处的立体声信号，并且第一和第二开关中的任一个接合时，单声道/立体声开关被接合时，第一输入端的输入信号被提供在 左声道输出，而第二输入端的输入信号被提供在右声道输出。

    Twisted lead pairs on PCB to improve common mode rejection
    6.
    发明授权
    Twisted lead pairs on PCB to improve common mode rejection 失效
    PCB上的双绞引线对以改善共模抑制

    公开(公告)号：US5424490A

    公开(公告)日：1995-06-13

    申请号：US202122

    申请日：1994-02-25

    申请人： Joseph J. Dombrowski ,  Donald E. Davis ,  Alberto M. Gonzalez ,  Kevin T. Lobb

    发明人： Joseph J. Dombrowski ,  Donald E. Davis ,  Alberto M. Gonzalez ,  Kevin T. Lobb

    IPC分类号： H05K1/02

    CPC分类号： H05K1/0228 ,  H05K1/0245 ,  H05K2201/044 ,  H05K2201/097

    摘要： The invention in its main aspect comprises a printed circuit board having a bus extending along a predetermined length of a portion of said printed circuit board, the bus having a predetermined width and defining a plurality of openings therein following a predetermined regular pattern, the pattern having at least a first pair of openings positioned on a first lateral side of an imaginary line along the bus, and at least a second pair of openings positioned on a second lateral side of the imaginary line along the bus, the first and the second pairs of openings being relatively arranged so that a first lead interconnecting the first pair of openings is in a twisted pair relationship with a second lead interconnecting the second pair of openings.

    摘要翻译： 本发明在其主要方面包括印刷电路板，其具有沿着所述印刷电路板的一部分的预定长度延伸的总线，所述总线具有预定的宽度并且在预定的规则图案之间限定多个开口，所述图案具有 至少第一对开口，沿着总线位于假想线的第一横向侧上，以及至少第二对开口，位于沿着总线的假想线的第二横向侧上，第一对和第二对 开口相对布置成使得互连第一对开口的第一引线与互连第二对开口的第二引线成双绞线关系。

    Stereo image control circuit
    7.
    发明授权
    Stereo image control circuit 失效
    立体声图像控制电路

    公开(公告)号：US5434921A

    公开(公告)日：1995-07-18

    申请号：US202029

    申请日：1994-02-25

    申请人： Joseph J. Dombrowski, Jr. ,  Borislav L. Orozov

    发明人： Joseph J. Dombrowski, Jr. ,  Borislav L. Orozov

    IPC分类号： H04S1/00

    CPC分类号： H04S1/002

    摘要： A stereo imaging circuit has a first channel input terminal, and a second channel input terminal; a variable resistance in circuit with each of the first and the second channel input terminals; a first amplifier in the first channel in circuit with the variable resistance, an output of the first amplifier in the first channel providing an input to a second amplifier in the first channel, an output of the second amplifier in said first channel providing an output of the first channel to a first channel output terminal; a first amplifier in the second channel in circuit with said variable resistance, an output of said first amplifier in said second channel providing an input to a second amplifier in the second channel, an output of the second amplifier in the second channel providing an output of the second channel to a second channel output terminal; a first interchannel amplifier having a variable transfer ratio and having an input in circuit with the first channel and an output in circuit with the second channel; a second interchannel amplifier having a variable transfer ratio and having an input in circuit with the second channel and an output in circuit with the first channel; the variable transfer ratio of the first and the second interchannel amplifiers being responsive to said variable resistance, whereby a stereo image circuit is provided which ranges between a MONO mode through a STEREO mode to a WIDE mode.

    摘要翻译： 立体声成像电路具有第一通道输入端子和第二通道输入端子; 与所述第一和第二通道输入端子中的每一个的电路中的可变电阻; 在具有可变电阻的电路中的第一通道中的第一放大器，第一通道中的第一放大器的输出为第一通道中的第二放大器提供输入，所述第一通道中的第二放大器的输出提供 第一通道到第一通道输出端子; 在具有所述可变电阻的电路中的第二通道中的第一放大器，所述第二通道中的所述第一放大器的输出为第二通道中的第二放大器提供输入，第二通道中的第二放大器的输出提供 第二通道到第二通道输出端子; 具有可变传输比并且具有与第一通道的电路的输入和与第二通道的电路中的输出的第一通道间放大器; 第二通道间放大器，其具有可变传输比并具有与第二通道的电路输入和与第一通道电路的输出; 第一和第二通道间放大器的可变传输比响应于所述可变电阻，由此提供立体声图像电路，其在通过立体声模式的MONO模式到WIDE模式之间。