Back to results
US 8,275,732 B2Granted
High definition multimedia interface transcoding system
AssigneesSony Corporation, Sony Electronics Inc.
InventorBrant L. Candelore
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a system including a decoder and a high definition multimedia interface (HDMI) whose copy protection protocol has been modified to allow the received uncompressed digital audio-video content from the decoder to be re-encoded and recorded.
Claims17
A system comprising:
- a first content playback device including an encoding device to re-encode received content from a first encoding format to a second encoding format in accordance with predetermined usage rules that are specific to a second content playback device being a device having a display and adapted for direct coupling to the first content playback device, wherein the predetermined usage rules of the second content playback device are provided to the first content playback device by an exchange key and enable the encoding device to determine the second content playback device prior to transmitting the content, and wherein the exchange key includes information that identifies a number of times the content can be played back and information to allow or deny transcoding, the first content playback device supporting playback of content in the first encoding format that differs from the second encoding format supported by the second content playback device;
- and
- an interface compatible with the second content playback device, the interface to output the re-encoded content for storage and playback on the second content playback device.
A content receiving device comprising:
- an interface;
- and
- an encoding device to re-encode content from a first encoding format to a second encoding format in accordance with predetermined usage rules specific to a first content playback device, being a device having a display and being adapted for coupling to the interface to receive re-encoded content for storage and playback, wherein the predetermined usage rules enable the encode device to identify the first content playback device prior to transmitting the content, control playback of the re-encoded content, and are specific to the first content playback device so that the predetermined usage rules differ from usage rules that are used to control playback of the content on a second content playback device that is different from the first content playback device.
Dependencies are inferred from the claim text.