Abstract: The present invention provides a method for increasing data throughput for a wireless USB system that includes wire adapters that wirelessly transmit data between a host system and a USB enabled device.

Abstract: A system includes a line-based receiver for receiving protected content from a source and a line-based transmitter for providing the protected content to a destination. The protected content is secure, such as by using a High-bandwidth Digital Content Protection (HDCP) mechanism. Between the line-based transmitter and receiver is a wireless transmitter and a wireless receiver. The wireless transmitter establishes an encrypted wireless link with the wireless receiver according to a second encryption mechanism. The wireless transmitter is further configured for receiving the protected content from the line-based receiver, encrypting the protected content according to the second encryption mechanism, and wirelessly transmitting the encrypted protected content. The wireless receiver is further configured for receiving the wirelessly transmitted protected content from the wireless transmitter and decrypting the protected content according to the second encryption mechanism.

Abstract: A device is provided for use in a portable computer. The device includes a wireless graphics card that includes a connector for coupling to an expansion slot of the portable computer and for receiving a plurality of signals from the portable computer, the plurality of signals including video, audio, and data signals and an ultra wideband (UWB) chipset coupled to the connector for processing the plurality of signals and for generating an OFDM modulated signal that includes at least the video signal, where the OFDM modulated signal including the video signal is wirelessly transmitted over an UWB link to a monitor for display.

Abstract: The present invention provides a method and apparatus for compressing video data for wireless transmission. The invention continually monitors the output of a video data encoder and maintains a running average for the data output rate over multiple lines of video data. The encoder compresses video data on a line-by-line basis. The invention also monitors the occupancy of the data buffer and as well as the performance of the wireless subsystem to determine real time available channel capacity. If the average data rate exceeds the available channel capacity, the invention increases data compression on subsequent lines of video data until the average data rate falls within the channel capacity. If the average data output rate is less than the channel capacity, the invention reduces data compression on subsequent lines of video data until the average data rate increases to match the channel capacity.

Abstract: The present invention provides a method and apparatus for optimizing the transmission of video configuration data in a system comprising a host computer and a display monitor. The invention comprises a wireless video source adapter connected to the host computer and a wireless video sink adapter connected to the monitor. Upon system startup, the video sink adapter acquires EDID information from the monitor and transmits it to the video source adapter, which does not activate its connection and indicate its presence to the host computer until after receiving the EDID information. The video source adapter then supplies the EDID information to the host computer in response to EDID requests from the computer. In this manner, the video source adapter acts as a virtual proxy for the display monitor from the point of the view of the host computer. The host computer then uses the EDID information to configure its video signal to match the parameters of the display monitor.

Abstract: The present invention provides a method and apparatus for synchronizing wireless video data. The method involves first synchronizing the pixel clock of a video output device with the pixel clock of a video input device. This is accomplished by latching video counters in the input and output devices (creating a transmit and receive timestamp) for each wireless video data packet and adjusting the pixel clock frequency of the output device according to differences between these timestamps. Once the pixel clocks are synchronized, video frames from the video output device are synchronized with video frames from video input device such that only a fraction of a video frame is buffered at any time. The video frames are synchronized by offsetting the data stream from the video input device N lines ahead of the data stream from the video output device, wherein N is less than the total number of lines in a single video frame.

Abstract: This invention provides a Wireless USB hub that includes a first port configured to communicate with a wired USB enabled device, a second port configured to communicate with a first wireless USB enabled device, and a controller that detects the wired USB enabled device and presents the wired USB enabled device as a native wireless USB enabled device to the first wireless USB enabled device.

Abstract: A device is provided for use in a portable computer. The device includes a wireless graphics card that includes a connector for coupling to an expansion slot of the portable computer and for receiving a plurality of signals from the portable computer, the plurality of signals including video, audio, and data signals and an ultra wideband (UWB) chipset coupled to the connector for processing the plurality of signals and for generating an OFDM modulated signal that includes at least the video signal, where the OFDM modulated signal including the video signal is wirelessly transmitted over an UWB link to a monitor for display.

Abstract: A system includes a line-based receiver for receiving protected content from a source and a line-based transmitter for providing the protected content to a destination. The protected content is secure, such as by using a High-bandwidth Digital Content Protection (HDCP) mechanism. Between the line-based transmitter and receiver is a wireless transmitter and a wireless receiver. The wireless transmitter establishes an encrypted wireless link with the wireless receiver according to a second encryption mechanism. The wireless transmitter is further configured for receiving the protected content from the line-based receiver, encrypting the protected content according to the second encryption mechanism, and wirelessly transmitting the encrypted protected content. The wireless receiver is further configured for receiving the wirelessly transmitted protected content from the wireless transmitter and decrypting the protected content according to the second encryption mechanism.

Abstract: The present invention provides a method for increasing data throughput for a wireless USB system that includes wire adapters that wirelessly transmit data between a host system and a USB enabled device.

Abstract: This invention provides a Wireless USB hub that includes a first port configured to communicate with a wired USB enabled device, a second port configured to communicate with a first wireless USB enabled device, and a controller that detects the wired USB enabled device and presents the wired USB enabled device as a native wireless USB enabled device to the first wireless USB enabled device.

Abstract: A state machine interface that can be used with digital devices whose interface characteristics are not known in advance. This interface is completely programmable on a clock-by-clock basis. The interface consists of an output component, which can be either a control register or a data bus, and an input component that can be combined to provide various input/output (I/O) functions. The state machine interface of this invention makes it possible to interface with many type of application devices, whose interface characteristics and/or waveforms may not be identical or are not known at the time a particular state machine is designed.

Abstract: A state machine interface that can be used with digital devices whose interface characteristics are not known in advance. This interface is completely programmable on a clock-by-clock basis. The interface consists of an output component, which can be either a control register or a data bus, and an input component that can be combined to provide various input/output (I/O) functions. The state machine interface of this invention makes it possible to interface with many type of application devices, whose interface characteristics and/or waveforms may not be identical or are not known at the time a particular state machine is designed.