Invention Application
WO1998027731A2 METHOD AND DEVICE FOR PROVIDING CONTROLLED ACCESS VIDEO SIGNALS WITHOUT PROVIDING A SIGNAL IN THE CLEAR
审中-公开
用于提供控制访问视频信号的方法和设备，不提供清除信号
- Patent Title: METHOD AND DEVICE FOR PROVIDING CONTROLLED ACCESS VIDEO SIGNALS WITHOUT PROVIDING A SIGNAL IN THE CLEAR
- Patent Title (中): 用于提供控制访问视频信号的方法和设备，不提供清除信号
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Application No.: PCT/IB1997001534Application Date: 1997-12-08
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Publication No.: WO1998027731A2Publication Date: 1998-06-25
- Inventor: PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , CAVALLERANO, Alan , BASILE, Carlo , GOLDENBERG, Jill, Forer
- Applicant: PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
- Assignee: PHILIPS ELECTRONICS N.V.,PHILIPS NORDEN AB
- Current Assignee: PHILIPS ELECTRONICS N.V.,PHILIPS NORDEN AB
- Priority: US8/768,492 19961218
- Main IPC: H04N07/167
- IPC: H04N07/167
Abstract:
An LCD display device for receiving encrypted video data and for decrypting the video data such that a signal is not provided "in the clear" before receipt by the display device. The video data is encrypted within a row of video and decrypted at the display. Alternatively the rows are encrypted by altering the time sequence of display of each row.
Information query
