专利名称：TRACKING USAGE OF PORTABLE MEDIA
DEVICE
发明人：Michael A. Chen,Ty O. Ahmad-Taylor申请号：US11560917申请日：20061117
公开号：US20080120407A1公开日：20080522
专利附图：
摘要：Tracking usage of portable media device such that usage information associatedwith the media device may be tracked while the media device is offline. The usage
information may relate to any number operating parameters and conditions of the media
device, including media consumption and usage information.
申请人：Michael A. Chen,Ty O. Ahmad-Taylor
地址：Wallingford PA US,New York NY US
国籍：US,US
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