DNA replication templates stabilized by guanine quartets
    4.
    发明授权
    DNA replication templates stabilized by guanine quartets 失效
    鸟嘌呤四重峰稳定的DNA复制模板

    公开(公告)号:US6017709A

    公开(公告)日:2000-01-25

    申请号:US69434

    申请日:1998-04-29

    CPC分类号: C12Q1/6811 C12Q1/6869

    摘要: Guanine-rich oligonucleotide primers and short telomeric DNA oligonucleotides that serve as non-conventional templates for the synthesis of long, nascent DNA strands are used to screen for pharmaceutical agents. Using the methods of the invention, agents exhibiting antagonistic or agonistic effects on guanine quartet formation can be selected for further study. The invention also provides a predictive assay for cancer in which the level of DNA polymerase activity at a quartet stabilized template is measured. The invention also contributes a method for screening pharmaceutical agents that reduce or inhibit DNA polymerase activity at guanine quartet stabilized templates. The invention provides a method of creating extended DNA molecules from oligonucleotide templates. The invention also provides a method of inhibiting the ageing process in which an oligonucleotide capable of forming non-Watson-Crick structures is used to promote the elongation of telomeres by DNA polymerase.

    摘要翻译: 用作合成长的新生DNA链的非常规模板的富含鸟嘌呤寡核苷酸引物和短端粒DNA寡核苷酸用于筛选药剂。 使用本发明的方法,可以选择对鸟嘌呤四重峰形成具有拮抗作用或激动作用的药剂用于进一步研究。 本发明还提供了测定四重奏稳定模板中DNA聚合酶活性水平的癌症的预测试验。 本发明还有助于筛选在鸟嘌呤四重峰稳定的模板上降低或抑制DNA聚合酶活性的药物的方法。 本发明提供了从寡核苷酸模板产生扩展的DNA分子的方法。 本发明还提供一种抑制老化过程的方法,其中使用能够形成非沃森 - 克里克结构的寡核苷酸来促进DNA聚合酶的端粒伸长。

    Multi-standard audio player
    5.
    发明授权
    Multi-standard audio player 有权
    多标准音频播放器

    公开(公告)号:US06946982B1

    公开(公告)日:2005-09-20

    申请号:US10900721

    申请日:2004-07-27

    CPC分类号: G11B20/1262 H04H20/95

    摘要: For a portable video player to encode MP3 audio, a first digital signal processor (DSP) encodes digital signals from an analog/digital (A/D) converter into MP3 data, and a controller reads the MP3 data into a nonvolatile memory. To decode MP3 or MP2 audio, the controller reads MP3/2 data from the nonvolatile memory into the first DSP, and the first DSP decodes the MP3/2 data into digital signals that are provided to a digital/analog (D/A) converter.For the portable video player to encode a different type of audio, the first DSP is bypassed and a second DSP encodes digital signals from the A/D converter into audio data and writes the audio data into the nonvolatile memory. To decode this different type of audio, the first DSP is bypassed and the second DSP decodes audio data from the nonvolatile memory into digital signals that are provided to the D/A converter.

    摘要翻译: 对于便携式视频播放器来编码MP3音频,第一数字信号处理器(DSP)将来自模拟/数字(A / D)转换器的数字信号编码为MP3数据,并且控制器将MP3数据读入非易失性存储器。 为了解码MP3或MP2音频,控制器将MP3 / 2数据从非易失性存储器读入第一个DSP,第一个DSP将MP3 / 2数据解码为数字/模拟(D / A)转换器的数字信号 。 对于便携式视频播放器来编码不同类型的音频,第一DSP被旁路,第二DSP将来自A / D转换器的数字信号编码成音频数据,并将音频数据写入非易失性存储器。 为了解码这种不同类型的音频,第一DSP被旁路,第二DSP将来自非易失性存储器的音频数据解码为提供给D / A转换器的数字信号。