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    • 6. 发明授权
    • Dual rate transmission scheme and apparatus using the same
    • 双速传输方案和使用相同的设备
    • US06198414B1
    • 2001-03-06
    • US09481142
    • 2000-01-12
    • Alan J. McPhersonGregory B. Thagard
    • Alan J. McPhersonGregory B. Thagard
    • H03M730
    • G10L19/04H04N19/59H04N19/593
    • An analog signal, for example in a sound recording process, is converted into an input series of digital signals and is then encoded using a special differential encoding scheme. The scheme involves generating two series of signals, one series corresponding to some of the terms of the input signals, while other terms of the input series are excluded. For example the first series may include every second term of the input series. The second series includes terms corresponding to a difference between at least two terms of the input series, at least one of which is not included in the first series. Preferably the two terms of the input series defining a term of the second series are sequential or at most separated by one other term. The two series can be combined and can be either transmitted to a receiver or recorded on a medium. A high quality output is then obtained by reconstructing the input series from the two series. Alternatively, allow quality output is generated by using, the first series and only some of the terms (if any) if the second series.
    • 例如在声音记录过程中的模拟信号被转换成数字信号的输入序列,然后使用特殊的差分编码方案进行编码。 该方案涉及产生两个系列信号,一个系列对应于输入信号的一些项,而输入序列的其他项也被排除。 例如,第一系列可以包括输入序列的每个第二项。 第二系列包括对应于输入序列的至少两个项之间的差异的术语,其中至少一个不包括在第一系列中。 优选地,定义第二系列的项的输入序列的两个项是连续的或最多由另一个项分隔开。 这两个系列可以组合,可以传输到接收器或记录在介质上。 然后通过重建两个系列的输入序列获得高质量的输出。 或者,允许通过使用第一系列产生质量输出,并且仅在第二系列中产生一些术语(如果有的话)。
    • 9. 发明授权
    • Dual rate encoding scheme and apparatus using the same
    • 双速率编码方案和使用它的设备
    • US06239728B1
    • 2001-05-29
    • US09704878
    • 2000-11-02
    • Alan J. McPhersonGregory B. Thagard
    • Alan J. McPhersonGregory B. Thagard
    • H03M700
    • G10L19/04H04N19/59H04N19/593
    • An analog signal, for example in a sound recording process, is converted into an input series of digital signals and is then encoded using a special differential encoding scheme. The scheme involves generating two series of signals, one series corresponding to some of the terms of the input signals, while other terms of the input series are excluded. For example the first series may include every second term of the input series. The second series includes terms corresponding to a difference between at least two terms of the input series, at least one of which is not included in the first series. Preferably the two terms of the input series defining a term of the second series are sequential or at most separated by one other term. The two series can be combined and can be either transmitted to a receiver or recorded on a medium. A high quality output is then obtained by reconstructing the input series from the two series. Alternatively, allow quality output is generated by using the first series and only some of the terms (if any) if the second series.
    • 例如在声音记录过程中的模拟信号被转换成数字信号的输入序列,然后使用特殊的差分编码方案进行编码。 该方案涉及产生两个系列信号,一个系列对应于输入信号的一些项,而输入序列的其他项也被排除。 例如,第一系列可以包括输入序列的每个第二项。 第二系列包括对应于输入序列的至少两个项之间的差异的术语,其中至少一个不包括在第一系列中。 优选地,定义第二系列的项的输入序列的两个项是连续的或最多由另一个项分隔开。 这两个系列可以组合,可以传输到接收器或记录在介质上。 然后通过重建两个系列的输入序列获得高质量的输出。 或者,允许通过使用第一系列产生质量输出,并且仅在第二系列中产生一些术语(如果有的话)。