Abstract: An integrated video distribution system for distributing video signals from a plurality of sources. The system includes a digitizer arrangement arranged to receive analog video signals from a plurality of video sources. The analog video signals are digitized in YCrCb video format and converted to streams of digital video data. The video data is multiplexed and transmitted on a digital video bus having a plurality of video channels. In one embodiment, the digitizers and video bus are integrated with a backplane arrangement that includes expansion slots for a plurality of terminal controllers. The expansion slots provide connections to the video bus. Each terminal controller mounted on the backplane arrangement can be coupled to a display terminal and an input device. The terminal controller selects one or more of the input streams of video data in response to control signals from the input device and converts the selected video data to an analog video signal for output to a display terminal.

Abstract: A data broadcast receiving apparatus includes a storage controlling unit and a reproduction controlling unit. The storage controlling unit stores data modules among a plurality of data modules included in received broadcast data, into a module storing unit and also stores storage information for each of the plurality of data modules into a storage information storing unit, the storage information showing the presence or absence of the data module in the module storing unit, a reason of the absence of the data module, and the like. When the user selects a data module as a reproduction target, the reproduction controlling unit judges whether the data module is stored unit, based on storage information of the data module. If the data module is not stored, the reproduction controlling unit displays a message informing the user of the fact and reason that the data module is not stored.

Abstract: A local communication system comprises a plurality of devices interconnected for data communication. One of the devices is a display device arranged to display data from one or more other devices of the system, and one of the devices is a remote control carrying a first group of controls (A . . . G) for controlling respective operational functions of a device of the system. The system is configured to identify a selected device of the system to be controlled by user operation of a remote control device, and to determine which operational functions of that selected device are missing on the remote control. For such functions, the system generates on the display device a user actuatable simulacrum of a control for that function (H, J, K, L).