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    • 2. 发明申请
    • DUAL DECODER PORTABLE MEDIA DEVICE
    • 双解码器便携式媒体设备
    • WO2008139476A2
    • 2008-11-20
    • PCT/IL2008000667
    • 2008-05-14
    • SANDISK IL LTDRAINES MOSHEHARAN ELICARMELI RAN
    • RAINES MOSHEHARAN ELICARMELI RAN
    • G11B27/00
    • H04N9/7921G06F1/3203G06F1/3293H04N5/775H04N5/907H04N9/8042H04N9/8047Y02D10/122
    • A portable media device 100 including two onboard hardware media decoders (124, 128) operative to decode a given digital content item 148 is provided. In some embodiments, one of the onboard hardware media decoders 128 has a relatively high power consumption and produces a relatively 'high quality' media signal, and the other of the onboard hardware media decoder 124 has a relatively low power consumption and produces a relatively 'low quality' media signal. In one non-limiting use case: (i) when no external power is available, the relatively 'low power' hardware media decoder 124 may generate a relatively 'low quality' media signal which is presented on an onboard display screen 140a and/or onboard speaker 140b; and (ii) when external power is available, the relatively 'high power' hardware media decoder 128 may generate a relatively 'high quality' media signal which is exported out of the portable media device 100 via one or more media ports, and presented on an external host presentation device 160 (for example, a large-screen television). Methods for operating a portable media device 100 are also described herein.
    • 提供一种便携式媒体设备100,其包括操作用于解码给定数字内容项148的两个板上硬件媒体解码器(124,128)。 在一些实施例中,车载硬件介质解码器128中的一个具有相对高的功率消耗并产生相对“高品质”的媒体信号,并且车载硬件媒体解码器124中的另一个具有相对低的功率消耗并产生相对“ 低品质“媒体信号。 在一个非限制性使用情况下:(i)当没有外部电源可用时,相对“低功率”硬件媒体解码器124可以产生呈现在车载显示屏140a上的相对“低质量”媒体信号和/或 车载扬声器140b; 和(ii)当外部电源可用时,相对“高功率”的硬件媒体解码器128可以产生相对“高品质”的媒体信号,其通过一个或多个媒体端口从便携式媒体设备100导出, 外部主机呈现装置160(例如,大屏幕电视)。 本文还描述了操作便携式媒体设备100的方法。