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    Sampled signal generation circuit
    4.
    发明公开
    Sampled signal generation circuit 失效
    电路，用于产生取样信号。

    公开(公告)号：EP0043652A2

    公开(公告)日：1982-01-13

    申请号：EP81302611.9

    申请日：1981-06-11

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Kitagawa, Kazuo ,  Endoh, Kenjiro ,  Kira, Hideshi

    IPC分类号： G11C27/02

    CPC分类号： G11C27/02 ,  H03M1/124 ,  H03M1/48

    摘要： A sampled data generation circuit includes a voltage controlled oscillator (12) for producing an output signal with a frequency variable according to a control voltage, a sample and hold circuit (10) for sampling and holding an analog input signal in response to the output signal from the voltage controlled oscillator (12), and a control circuit (14) for detecting the difference between two successive sampled data generated from the sample and hold circuit (10) and supplying the voltage controlled oscillator (12) with an output signal corresponding to the difference as the control voltage, thereby controlling the voltage controlled oscillator (12) so that the greater the difference, the higher the frequency of the output signal from the voltage controlled oscillator (12) is.

    Compatible audio system for special playback applications with surround system
    5.
    发明公开
    Compatible audio system for special playback applications with surround system 失效
    适用于带环绕声系统的特殊播放应用的兼容音频系统

    公开(公告)号：EP0757506A3

    公开(公告)日：1997-03-26

    申请号：EP96112552.3

    申请日：1996-08-02

    申请人： KABUSHIKI KAISHA TOSHIBA ,  DOLBY LABORATORIES LICENSING CORPORATION

    发明人： Endoh, Kenjiro ,  Todd, Craig Campbell

    IPC分类号： H04S3/00

    CPC分类号： H04S3/00 ,  G11B27/034 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B27/34 ,  G11B2220/2562

    摘要： When an audio stream signal is transmitted, the bit stream information for determining the surround mode and special-use mode, including karaoke use, is sensed from the signal at a mode sensor (163). After the surround mode has been sensed, the audio data is converted by a decoder into a front left, front center, and front right main audio signals and a back left and back right surround audio signals in the surround mode, which are converted into analog signals and outputted to the corresponding speakers (8L, 8C, 8R, 8LS, 8RS). When the special-use mode has been sensed, by using the central main audio signal of the front left, front center, and front right main audio signals and back left and back right surround audio signals converted at the decoder, a normally used first-type accompanying sound selectively made unused, for example, guide melody, is generated. In addition, by using the back left and back right surround audio signals, a normally unused second-type accompanying sound selectively used, for example, vocals, is generated. The first- and second-type accompanying sounds, together with the front left and front right main audio signals, are reproduced selectively. Consequently, a system that transmits surround sound using a plurality of channels can maintain compatibility with a surround system easily, when the plurality of channels are applied to special use, such as karaoke, not being restricted to surround use.

    摘要翻译： 当发送音频流信号时，从模式传感器（163）处的信号中感测用于确定包括卡拉OK在内的环绕模式和特殊用途模式的比特流信息。 在感测到环绕模式之后，音频数据被解码器转换为环绕模式中的左前方，前方中央和右前方主音频信号以及左后方和右后方环绕音频信号，其被转换为模拟 信号并输出​​到相应的扬声器（8L，8C，8R，8LS，8RS）。 当已经感测到特殊使用模式时，通过使用在解码器处转换的左前，中前和右前主音频信号以及左后和右后环绕音频信号的中央主音频信号， 产生选择性地未使用的伴奏声音，例如引导旋律。 另外，通过使用左后方和右后方环绕音频信号，产生有选择地使用的通常未使用的第二类伴音，例如人声。 第一种和第二种伴音与左前方和右前方主音频信号一起被有选择地再现。 因此，当多个频道被应用于诸如卡拉OK之类的特殊用途时，使用多个频道发送环绕声的系统可以容易地保持与环绕系统的兼容性，而不限于环绕使用。

    Compatible audio system for special playback applications with surround system
    10.
    发明公开
    Compatible audio system for special playback applications with surround system 失效
    Kompatibles Audiosystemfürspezielle Wiedergabeanwendungen miträumlichenSchallwiedergabesystem

    公开(公告)号：EP0757506A2

    公开(公告)日：1997-02-05

    申请号：EP96112552.3

    申请日：1996-08-02

    申请人： KABUSHIKI KAISHA TOSHIBA ,  DOLBY LABORATORIES LICENSING CORPORATION

    发明人： Endoh, Kenjiro ,  Todd, Craig Campbell

    IPC分类号： H04S3/00

    CPC分类号： H04S3/00 ,  G11B27/034 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B27/34 ,  G11B2220/2562

    摘要： When an audio stream signal is transmitted, the bit stream information for determining the surround mode and special-use mode, including karaoke use, is sensed from the signal at a mode sensor (163). After the surround mode has been sensed, the audio data is converted by a decoder into a front left, front center, and front right main audio signals and a back left and back right surround audio signals in the surround mode, which are converted into analog signals and outputted to the corresponding speakers (8L, 8C, 8R, 8LS, 8RS). When the special-use mode has been sensed, by using the central main audio signal of the front left, front center, and front right main audio signals and back left and back right surround audio signals converted at the decoder, a normally used first-type accompanying sound selectively made unused, for example, guide melody, is generated. In addition, by using the back left and back right surround audio signals, a normally unused second-type accompanying sound selectively used, for example, vocals, is generated. The first- and second-type accompanying sounds, together with the front left and front right main audio signals, are reproduced selectively. Consequently, a system that transmits surround sound using a plurality of channels can maintain compatibility with a surround system easily, when the plurality of channels are applied to special use, such as karaoke, not being restricted to surround use.

    摘要翻译： 当发送音频流信号时，从模式传感器（163）的信号中感测出用于确定包围卡拉OK使用的环绕模式和特殊用途模式的比特流信息。 在感测到环绕模式之后，音频数据由解码器转换为左前，左前，右前主音频信号，以及环绕声模式中的后左右环绕音频信号，转换为模拟 信号并输出​​到相应的扬声器（8L，8C，8R，8LS，8RS）。 当感测到特殊使用模式时，通过使用前置左前，左前，右前的主音频信号的中央主音频信号以及在解码器处转换的后左右环绕音频信号， 选择性地使未被使用的伴奏声，例如引导旋律被产生。 此外，通过使用后左右环绕音频信号，生成选择性地使用例如声音的常用的第二类伴随声音。 第一和第二类伴奏声音与前左和右前主音频信号一起被有选择地再现。 因此，当多个频道被应用于诸如卡拉OK的特殊用途时，使用多个频道发送环绕声的系统可以容易地保持与环绕系统的兼容性，而不仅限于环绕使用。