Abstract: A video controller broadcasts input video through a premises media, such as a coaxial cable to one or more premises televisions or television channels. When a PC provides the input video, a mode change may occur to direct the video to the PC monitor or to the broadcast output. The video resolution of the PC is set to provide a desired digital television resolution with broadcast video. An audio driver may be used to provide USB audio output from the PC. When the PC monitor or broadcast output is selected for video output, the non-selected output is disabled or provided with a video indication that another video output is active. An EDID can be captured from the PC or PC monitor to assist with mode changes and setting PC video resolution. The input video may be provided directly from a digital video source and broadcast to selected televisions or channels.

Abstract: A video controller selects a channel for premises broadcasting to a premises television based on a fast scan of signal strength in channels available over a premises media. The signal strength of certain filtered channel frequencies can be evaluated to determine if a channel is occupied. Unoccupied channels can be ranked in relation to nearby occupied or unoccupied channels. The nearby channels may be ranked in terms of the signal strength content in relation to the channel being evaluated. The video controller can select an unoccupied channel with an optimal ranking to permit premises broadcasting with reduced interference or conflict with other channels.

Abstract: A video controller broadcasts input video through a premises media, such as a coaxial cable to one or more premises televisions or television channels. When a PC provides the input video, a mode change may occur to direct the video to the PC monitor or to the broadcast output. The video resolution of the PC is set to provide a desired digital television resolution with broadcast video. An audio driver may be used to provide USB audio output from the PC. When the PC monitor or broadcast output is selected for video output, the non-selected output is disabled or provided with a video indication that another video output is active. An EDID can be captured from the PC or PC monitor to assist with mode changes and setting PC video resolution. The input video may be provided directly from a digital video source and broadcast to selected televisions or channels.

Abstract: A video controller selects a channel for premises broadcasting to a premises television based on a fast scan of signal strength in channels available over a premises media. The signal strength of certain filtered channel frequencies can be evaluated to determine if a channel is occupied. Unoccupied channels can be ranked in relation to nearby occupied or unoccupied channels. The nearby channels may be ranked in terms of the signal strength content in relation to the channel being evaluated. The video controller can select an unoccupied channel with an optimal ranking to permit premises broadcasting with reduced interference or conflict with other channels.

Abstract: An arrangement for selective filtering, e.g. one-way filtering, of messages received by a 2-port bridge from stations connected to two LANs of an extended LAN is provided. The bridge includes a message filtering database containing the addresses of all stations connected to one of the LANs. The database also contains a list of higher-level protocols employed by the stations. Associated with each protocol-type is information used by the bridge to dispose of the message. The message filtering database comprises a single table memory capable of supporting both ports of the bridge. The selective filtering process involves a two-step analysis by the bridge to determine whether to discard the message or forward it to another port. The analysis is based on a destination address and a protocol-type of the received message.

Abstract: A terminal server architecture includes a central processing unit (CPU), a data movement module, local area network (LAN) interface and a plurality of connected terminals. The CPU manages pointers to data using command status registers to instruct the data movement module to actually perform data movement between the terminals and the LAN.