Method of reducing noise signals caused by fluctuations in power
requirements of digital signal processor having recurring wait routines
    1.
    发明授权
    Method of reducing noise signals caused by fluctuations in power requirements of digital signal processor having recurring wait routines 失效
    降低噪声信号的方法,由具有循环等待例程的数字信号处理器的功率需求波动引起

    公开(公告)号:US5446852A

    公开(公告)日:1995-08-29

    申请号:US283926

    申请日:1994-08-01

    CPC分类号: G06J1/00 G06F11/00

    摘要: A method utilizing a predetermined set of instructions in a wait routine reduces spurious signals caused by the power consumption of processors, particularly digital signal processors, which is dependent on the instruction code being executed. These spurious signals occur, for example, in processors performing cyclically recurring program routines which are initiated by interrupts where, during the run time of the routines, a first mean power consumption results, and where the run time of the program routines is shorter than the time between two successive interrupts. The cyclic changes in power consumption caused by this mode of operation of the digital signal processor are avoided by performing a wait routine between successive program routines which includes instructions selected to cause a mean power consumption of the processor during the wait routine to correspond to that during the program routines.

    摘要翻译: 在等待程序中使用预定指令集的方法减少了由依赖于正在执行的指令代码的处理器(特别是数字信号处理器)的功耗引起的寄生信号。 这些寄生信号例如在执行周期性循环的程序例程的处理器中发生,该程序例程由中断发起,其中在例程的运行时间期间,第一平均功耗结果,以及程序例程的运行时间短于 两个连续中断之间的时间。 由数字信号处理器的这种操作模式引起的功耗的循环变化通过在连续的程序例程之间执行等待程序来避免,该程序例程包括被选择以在等待程序期间使处理器的平均功耗对应于 程序例程。

    Audio playback apparatus
    2.
    发明授权
    Audio playback apparatus 有权
    音频播放装置

    公开(公告)号:US6151580A

    公开(公告)日:2000-11-21

    申请号:US251502

    申请日:1999-02-17

    CPC分类号: G11B20/10527 G11B20/00007

    摘要: An audio playback apparatus for an input data stream (d0) delivered by an audio data source (1) in a standardized data format (F1) is disclosed comprising an input decoder (2) for forming a first data stream (d1), which contains the audio information and is separated by means of an output decoder (5) into its audio signal components (L, R). In addition to the first data stream (d1), the input decoder (2) generates a second data stream (d2) which corresponds to the data contained in the data field (D1) of the standardized data format (F1), and which is fed to an additional decoder (3) that detects a second data format (F2) possibly contained in the second data stream (d2) and passes the audio information of the second data format (F2) as a third data stream (d3) to the output decoder (5). Upon detection of the second data format (F2), the additional decoder (3) provides a detection signal (dz) to the control unit (4) which, in response to this detection signal (dz), sets the output decoder (5) to the processing of the first or third data stream (d1, d3).

    摘要翻译: 公开了一种用于以标准化数据格式(F1)由音频数据源(1)传送的输入数据流(d0)的音频播放装置,包括用于形成第一数据流(d1)的输入解码器(2),其包含 音频信息并通过输出解码器(5)分离成其音频信号分量(L,R)。 除了第一数据流(d1)之外,输入解码器(2)生成与包含在标准化数据格式(F1)的数据字段(D1)中的数据相对应的第二数据流(d2) 馈送到检测可能包含在第二数据流(d2)中的第二数据格式(F2)的附加解码器(3),并将作为第三数据流(d3)的第二数据格式(F2)的音频信息作为第三数据流(d3)传递到 输出解码器(5)。 在检测到第二数据格式(F2)时,附加解码器(3)向控制单元(4)提供检测信号(dz),响应于该检测信号(dz),设置输出解码器(5) 到第一或第三数据流(d1,d3)的处理。

    Playback apparatus
    3.
    发明申请
    Playback apparatus 失效
    播放装置

    公开(公告)号:US20050018577A1

    公开(公告)日:2005-01-27

    申请号:US10772150

    申请日:2004-02-04

    摘要: A playback apparatus includes a data source (1) that provides a data stream signal (d0), and a device (2) responsive to the data stream signal. The device forms a first data stream (d1) in a first data format (F1), wherein the first data stream (d1) includes a data field (D1) that is encoded in a second data format (F2). A code converter (3) is responsive to the first data stream (d1), and converts selected parts of the first data stream (d1) to a second data stream (d2) that has data encoded in a third data format (F3). An output decoder (5) forms playback signals from the second data stream (d2). The playback signal may be audio and/or video signals that are presented to the appropriate audio transducer or display device for presentation to a playback apparatus user(s).

    摘要翻译: 回放装置包括提供数据流信号(d0)的数据源(1)和响应于数据流信号的装置(2)。 该装置以第一数据格式(F1)形成第一数据流(d1),其中第一数据流(d1)包括以第二数据格式(F2)编码的数据字段(D1)。 代码转换器(3)响应于第一数据流(d1),并且将第一数据流(d1)的所选部分转换为具有以第三数据格式(F3)编码的数据的第二数据流(d2)。 输出解码器(5)从第二数据流(d2)形成回放信号。 重放信号可以是呈现给适当的音频换能器或显示装置的音频和/或视频信号,以呈现给播放装置用户。

    Playback apparatus
    4.
    发明授权
    Playback apparatus 失效
    播放装置

    公开(公告)号:US07092340B2

    公开(公告)日:2006-08-15

    申请号:US10772150

    申请日:2004-02-04

    IPC分类号: G11B5/09

    摘要: A playback apparatus includes a data source (1) that provides a data stream signal (d0), and a device (2) responsive to the data stream signal. The device forms a first data stream (d1) in a first data format (F1), wherein the first data stream (d1) includes a data field (D1) that is encoded in a second data format (F2). A code converter (3) is responsive to the first data stream (d1), and converts selected parts of the first data stream (d1) to a second data stream (d2) that has data encoded in a third data format (F3). An output decoder (5) forms playback signals from the second data stream (d2). The playback signal may be audio and/or video signals that are presented to the appropriate audio transducer or display device for presentation to a playback apparatus user(s).

    摘要翻译: 回放装置包括提供数据流信号(d 0)的数据源(1)和响应于数据流信号的装置(2)。 该设备以第一数据格式(F 1)形成第一数据流(d 1),其中第一数据流(d 1)包括以第二数据格式(F 2)编码的数据字段(D 1) 。 代码转换器(3)响应于第一数据流(d 1),并且将第一数据流(d 1)的所选部分转换为具有以第三数据格式编码的数据的第二数据流(d 2) F 3)。 输出解码器(5)从第二数据流(d 2)形成回放信号。 重放信号可以是呈现给适当的音频换能器或显示装置的音频和/或视频信号,以呈现给播放装置用户。

    Playback apparatus
    5.
    发明授权
    Playback apparatus 失效
    播放装置

    公开(公告)号:US06788634B1

    公开(公告)日:2004-09-07

    申请号:US09615617

    申请日:2000-07-13

    IPC分类号: G11B700

    摘要: A playback apparatus includes a data source (1) that provides a data stream signal (d0), and a device (2) responsive to the data stream signal. The device forms a first data stream (d1) in a first data format (F1), wherein the first data stream (d1) includes a data field (D1) that is encoded in a second data format (F2). A code converter (3) is responsive to the first data stream (d1), and converts selected parts of the first data stream (d1) to a second data stream (d2) that has data encoded in a third data format (F3). An output decoder (5) forms playback signals from the second data stream (d2). The playback signal may be audio and/or video signals that are presented to the appropriate audio transducer or display device for presentation to a playback apparatus user(s).

    摘要翻译: 回放装置包括提供数据流信号(d0)的数据源(1)和响应于数据流信号的装置(2)。 该装置以第一数据格式(F1)形成第一数据流(d1),其中第一数据流(d1)包括以第二数据格式(F2)编码的数据字段(D1)。 代码转换器(3)响应于第一数据流(d1),并且将第一数据流(d1)的所选部分转换为具有以第三数据格式(F3)编码的数据的第二数据流(d2)。 输出解码器(5)从第二数据流(d2)形成回放信号。 重放信号可以是呈现给适当的音频换能器或显示装置的音频和/或视频信号,以呈现给播放装置用户。