Processing

Please wait...

Settings

Settings

Goto Application

1. CN103827886 - Securing a HDCP link from graphic processor GPU to video display

Office China
Application Number 201280046584.5
Application Date 17.08.2012
Publication Number 103827886
Publication Date 28.05.2014
Grant Number 103827886
Grant Date 15.02.2017
Publication Kind B
IPC
G06F 21/84
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
82Protecting input, output or interconnection devices
84output devices, e.g. displays or monitors
G11B 20/00
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
CPC
G11B 20/00463
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
0021involving encryption or decryption of contents recorded on or reproduced from a record carrier
0042the copy protection scheme being related to a specific access protection standard
00463high-bandwidth digital content protection [HDCP]
G06F 21/10
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
G06F 21/84
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
82Protecting input, output or interconnection devices
84output devices, e.g. displays or monitors
G06T 1/0021
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1General purpose image data processing
0021Image watermarking
G06T 2201/0053
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2201General purpose image data processing
005Image watermarking
0053Embedding of the watermark in the coding stream, possibly without decoding; Embedding of the watermark in the compressed domain
G06T 2201/0064
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2201General purpose image data processing
005Image watermarking
0064for copy protection or copy management, e.g. CGMS, copy only once, one-time copy
Applicants APPLE INC.
Inventors HENDRY IAN C
Agents bao jin
Priority Data 13212821 18.08.2011 US
Title
(EN) Securing a HDCP link from graphic processor GPU to video display
(ZH) 保护从图形处理器GPU到视频显示器的HDCP链接
Abstract
(EN)
Securing protected content during video playback. The embodiments provide a system that drives a display from a computer system. During operation, the system writes graphical output, generated from a copyrighted video file, to protected memory and drives the display from the protected memory. If the graphical output lacks copy protection, the system discontinues the driving of the display from the protected memory. In particular, upon detecting a lack of copy protection in the graphical output, the system continues to drive the display from the protected memory during a grace period associated with the lack of protection in the graphical output. The system then discontinues driving of the display from the protected memory if protection of the graphical output does not resume during the grace period.

(ZH)
本发明公开涉及保护从图形处理器GPU到视频显示器的HDCP链接。在视频回放期间保护受保护的内容。实施例提供了从计算机系统驱动显示器的系统。在操作期间,该系统把从受版权保护的视频文件生成的图形输出写到受保护存储器并且从该受保护存储器驱动显示器。如果图形输出缺乏拷贝保护,则系统停止从受保护存储器对显示器的驱动。具体而言,在检测到图形输出中拷贝保护的缺乏时,系统在与图形输出中保护的缺乏相关联的宽限期内继续从受保护存储器驱动显示器。然后,如果图形输出的保护在宽限期内没有恢复,该系统就停止从受保护存储器对显示器的驱动。