Wireless display
First Claim
1. A method for wireless image transfer, the method comprising:
- compressing video bit-map data in a portable device using a graphics device interface mirror driver system;
encrypting said compressed video data in said portable device using said mirror driver system;
transmitting said video data over a wireless radio frequency link for display by a wireless display device.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless link between a hand-held or portable device and a display device (projector). The highly optimized, DSP generated, graphic rendering code and JPEG decompression code provides the real-time rendering requirements necessary to offer cable-like connectivity from a remote device to a wireless projector. The projector is capable of receiving, decompressing, decoding, and displaying images in real-time. The system of the present invention incorporates digital signal processor (DSP) accelerated 802.11 compression and encryption capability, which is provided in a standard 802.11 PCMCIA card format. In one application, the hand-held device displays a low-resolution version of a particular image, such as a thumbnail, and may also provide a list of images available for display on the projector at full-resolution. Interactive Codec (coder/decoder) capability for use in remote PC video applications is also provided. The Codec iteratively compresses sub-sampled on-screen video data locally starting with less computationally complex techniques with the viewer interactively increasing the complexity until acceptable data is presented.
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Citations
18 Claims
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1. A method for wireless image transfer, the method comprising:
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compressing video bit-map data in a portable device using a graphics device interface mirror driver system;
encrypting said compressed video data in said portable device using said mirror driver system;
transmitting said video data over a wireless radio frequency link for display by a wireless display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for wireless image transfer, the method comprising:
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receiving video data in a wireless interface module with video data decoding/decompressing capability;
interpreting said graphics device interface commands in said wireless interface module;
decoding said video data in said wireless interface module;
decompressing said video data in said wireless interface module; and
displaying said video data on a display device. - View Dependent Claims (11, 12, 13, 15, 16, 17)
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14. A system for wireless video image data transfer from a portable device, comprising:
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a portable device for generating video image data;
at least one digital signal processor accelerator selected from the group consisting of a digital signal processor compression accelerator and a digital signal processor encryption accelerator coupled to said portable device for processing said video image data; and
a transmitter embedded in said portable device for transmitting said processed video image data over a radio frequency wireless link.
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18. A display device comprising:
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a wireless interface module for receiving video image data;
at least one digital signal processor accelerator selected from the group consisting of a digital signal processor decompression accelerator and a digital signal processor decryption accelerator embedded in said wireless interface module for processing said video image data; and
a display device coupled to said wireless interface module to receive and display said processed video image data.
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Specification