The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2015
Filed:
Feb. 19, 2014
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Shigeki Matsunaga, Hyogo, JP;
Abstract
Provided is a content distribution method which allows a source device to safely distribute copyrighted content to a sink device in response to a request from the sink device as a trigger. The content distribution method includes a list transmission step S, a content request step S, and a content transfer step S. In S, a source device transmits metadata which includes a format identifier indicating that content is distributable under the specification of the HDCP and the URL of the content. In S, a sink device makes a request for content identified by the URL after adding information necessary for authentication processing to the request. In S, the source device creates an encryption key by performing the authentication processing on the sink device in accordance with the information necessary for the authentication processing, encrypts the content using the encryption key, and transfers the encrypted content to the sink device.