Persistant review buffer

摘要

A method of content recording and playback is carried out in a receiving device by selecting one of a plurality of digital content streams (80, 82, 84), which have respective distribution arrangements. A content segment (90) of a review buffer (88) is established and configured for the one content stream. While recording the one content stream in the review buffer (90), a content source change operation is performed to record another content stream in the review buffer (88) by discontinuing recording of the one content stream, and iterating establishing, configuring and recording with a new content segment (92). Recorded content of the content segment (90) and new content segment (92) are stored in respective data stores (102, 100). The content streams may be replayed in an order or a reverse order of recording thereof by retrieving data from respective content segments or data stores. Related apparatus is also described.