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    • 3. 发明授权
    • Transparent telephone access system using voice authorization
    • 透明电话接入系统采用语音授权
    • US5717743A
    • 1998-02-10
    • US736065
    • 1996-10-23
    • Michael L. McMahanGerhard P. H. DeffnerBilly W. Hensley
    • Michael L. McMahanGerhard P. H. DeffnerBilly W. Hensley
    • H04M3/44H04M3/00
    • H04M3/44H04M2201/40
    • A transparent telephone access system using voice authorization includes a method and system (30 and 60) to protect against the unauthorized use of telephone network (20). By receiving a spoken telephone number (14) from telephone unit (16) and recognizing the spoken phrase that corresponds to telephone number (24), the method and system permit transmission through telephone network (20) to telephone (22). The method and system record spoken phrase (14) in voice recognition server system (18). For the spoken phrase, a voice-template is formed and compared with a voice template formed from a composed phrase including pre-existing or stored spoken digits. In response to the comparison, use of telephone system (16) through telephone network (20) is permitted.
    • 使用语音授权的透明电话接入系统包括防止未经授权使用电话网络(20)的方法和系统(30和60)。 通过从电话单元(16)接收一个口语电话号码(14)并识别对应于电话号码(24)的口语短语,该方法和系统允许通过电话网络(20)传送到电话(22)。 语音识别服务器系统(18)中的方法和系统记录语音短语(14)。 对于口语短语,形成语音模板并与由包括预先存在或存储的口头数字的组合短语形成的语音模板进行比较。 响应于比较,允许通过电话网络(20)使用电话系统(16)。
    • 7. 发明授权
    • Speech recognition system
    • 语音识别系统
    • US4882757A
    • 1989-11-21
    • US302998
    • 1989-01-26
    • William M. FisherMichael L. McMahanGeorge DoddingtonEnrico L. Bocchieri
    • William M. FisherMichael L. McMahanGeorge DoddingtonEnrico L. Bocchieri
    • G10L15/18
    • G10L15/193
    • Speech recognition is improved using prestored words and prestored sentences which provide grammar or context rules. Multiple word hypotheses and plural sentence hypotheses are used.A speech recognition system uses a word hypothesizer to generate hypothesized words for a sentence recognizer. The sentence recognizer receives information containing the hypothesized word and its beginning and end points. The sentence recognizer compares each incoming hypothesis with words allowed by a grammar, and generates a partial or complete sentence hypothesis for each state in which the hypothesis is allowed by the grammar. A dynamic programming technique using backpointer is used to retain all currently valid partial and complete sentence hypotheses. When a complete sentence satisfies suitable criteria, it is output as a recognized sentence. Gaps and overlaps between hypothesized words are used in calculation of a sentence error for each partial and complete sentence hypothesis.
    • 使用提供语法或上下文规则的预存字和预存的句子来改进语音识别。 使用多个词假设和多个句子假设。 语音识别系统使用单词假设来生成用于句子识别器的假设词。 句子识别器接收包含假设词及其起点和终点的信息。 句子识别器将每个传入假设与语法允许的单词进行比较,并为语法允许假设的每个状态生成部分或完整的句子假设。 使用反向指针的动态编程技术用于保留所有当前有效的部分和完整句子假设。 当一个完整的句子满足适当的标准时,它被输出为公认的句子。 假设词之间的间隙和重叠用于计算每个部分和完整句子假设的句子错误。