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    • 3. 发明授权
    • Supply of digital audio and video products
    • 供应数字音视频产品
    • US07707069B2
    • 2010-04-27
    • US11158812
    • 2005-06-21
    • David R. ThomasEdwin Randolph Cole
    • David R. ThomasEdwin Randolph Cole
    • G06Q30/00
    • H04N7/17336G06Q20/123G06Q30/06G06Q30/0621G06Q30/0641G10L21/00G11B20/10527H04N21/2223H04N21/234327H04N21/234354H04N21/23439H04N21/2543H04N21/25435H04N21/47211H04N21/8549
    • A server for a merchant computer system, the server comprising: a file store for storing a range of audio/video products in respective product files; a dialogue unit having a network connection and operable to invite and receive a client selection from among the products via the network connection; a product reader for reading the product files to generate a digital audio/video signal; a digital signal processing unit having an input connectable to receive the digital audio/video signal from the product reader, a processing core operable to apply a defined level of content degradation to the digital audio/video signal, and an output connected to output the degraded digital audio/video signal from the processing core to the network connection. It is therefore possible for a content provider to change the characteristics of an audio or video data stream supplied over a network to a potential purchaser in a controlled and variable manner. The amount of degradation is sufficient to enable a potential purchaser to appreciate the characteristics of the audio or video product, whilst reducing the perceived quality.
    • 一种用于商业计算机系统的服务器,所述服务器包括:用于在各个产品文件中存储一系列音频/视频产品的文件存储器; 对话单元,其具有网络连接并且可操作以经由网络连接从所述产品中邀请和接收客户端选择; 用于读取产品文件以产生数字音频/视频信号的产品读取器; 数字信号处理单元,其具有可连接以从产品读取器接收数字音频/视频信号的输入,可操作以将定义的内容劣化水平应用于数字音频/视频信号的处理核心,以及连接到输出降级 数字音频/视频信号从处理核心到网络连接。 因此,内容提供商可以以受控和可变的方式将通过网络提供的音频或视频数据流的特性改变为潜在购买者。 退化的量足以使潜在购买者能够欣赏音频或视频产品的特性,同时降低感知质量。