US 2007/0177491 A1 · Content use method and content recording device

Abstract

There is provided a content recording device capable of performing content reproduction with a plurality of qualities while limiting the use of the content. The device includes a content acquisition unit for acquiring a basic layer indispensable for content reproduction which is obtained by hierarchically encoding at least one of the parameters of the resolution, bit rate. and frame rate and an extended layer for interpolating it; and an access control unit for recording the basic layer, the extended layer, and use control information, moving the basic layer recorded in a basic layer recording unit and the use control information recorded in a use control information recording unit to an external content recording device. and deleting the moved basic layer from the basic layer recording unit, thereby enabling reproduction of the content with various qualities by a plurality of devices as well as reproduction with the original quality while satisfying the use limit posed on the content.

Claims25

Dependent claims

A content recording apparatus comprising:

a recording section that records a base layer indispensable for playing back content and an enhancement layer which interpolates the base layer. the base layer and the enhancement layer being obtained by applying hierarchical coding to content on at least one of parameters of resolution, bit rate and frame rate;
a usage control information recording section that records usage control information that limits usage of content;
an outside device connection section that accesses an outside device and carries out data transmission/reception with said outside device;
a device authentication section that authenticates whether or not said outside device can be operated according to the usage control information according to identification information acquired from said outside device through said outside device connection section;
and
an access control section that sends out data of part of the content including at least the base layer and the usage control information to said outside device authenticated by said device authentication section through said outside device connection section.

3 more elements

Dependencies are inferred from the claim text.

Content use method and content recording device

Life of this patent

Content use method and content recording device

Life of this patent

Abstract

Claims25