Abstract: An arrangement for transmitting information from a first component of a computer system to a second component of the computer system including a source channel associated with the first component of the computer system; a destination channel associated with the second component of the computer system; apparatus for interconnecting the source and the destination channels; the source channel including apparatus for creating a stream of information in a prescribed format, apparatus for designating a destination channel as an address for the stream of information, and apparatus for transferring the stream of information to the apparatus for interconnecting the source and the destination channels; and the destination channel including apparatus for receiving a stream of information in the prescribed format from the apparatus for interconnecting the source and the destination channels, apparatus for receiving control signals apart from the stream of information, and apparatus for controlling the use of the stream o

Abstract: A circuit for translating data in one of a plurality of data formats into data in any of the other of the plurality of the data formats including apparatus for storing data from a first number of input bytes of data, apparatus for selecting unused bytes from the first number of data bytes stored by the apparatus for storing data and from a second number of input bytes of data, apparatus for placing the unused bytes selected in numerical byte order, and apparatus for placing the data in the numerical byte order in byte position for transfer to the format of a destination device.

Abstract: An arrangement for storing video and graphic information from video and graphics sources to be displayed on a computer output display including a single frame buffer having first and second separately addressable areas, the first of such areas being adapted to store pixel information, the second of such areas being adapted to store information regarding the type of information stored at each pixel of the first of such areas.

Abstract: A connector utilizing a number of electrical connectors wires equal to the number used to provide the static binary indications of the particular piece of equipment attached to the device, and further including diodes and direct connections between the electrical connectors arranged to provide a number of unique coded readouts when each of the individual ones of the electrical connectors are interrogated.

Abstract: An arrangement for addressing a frame buffer memory including apparatus for selecting from the address bits designating a position in the frame buffer of a pixel to be displayed on an output display the bits indicating the word address of the pixel in a particular row of the frame buffer, apparatus for multiplying the word address by a fraction to provide a new word address, apparatus for recombining the new word address with the row address to provide a new address in the frame buffer for the information regarding the pixel to be displayed, and apparatus for controlling the storage of a data word describing the pixel beginning at a selected byte of the data word whereby the storage in the frame buffer of an unused portion of a data word describing the pixel may be eliminated.

Abstract: A computer subsystem for presenting both video and graphic information on a computer output display in a computer system having a central processing unit and a frame buffer including apparatus for providing a video input signal representing full frame of video interlaced data, apparatus for selecting a rectangular portion of the video data to be presented, apparatus for converting the selected portion of the video signal into a stream of digitized pixel signals, apparatus for designating each such pixel of video information which is to be written to the frame buffer, and apparatus for addressing each of such pixels for storage at selected points of the frame buffer.

Abstract: A circuit which includes apparatus for determining for at each node of a multi-node interconnect the highest priority data present for transfer to that node, apparatus for storing information indicating the last node from which a transfer of data occurred at each priority level, apparatus for selecting for each priority level of data available at the node the last node from which a transfer of data occurred at each priority level, apparatus for weighting data at each priority level depending on the data last chosen at that level of priority, and means for selecting from all of the data available at each node the data having both the highest priority and having been chosen least recently at that priority levels of data at that node.

Abstract: An arrangement which includes apparatus for signifying the source of data to be displayed, apparatus for generating lines of data to fit between the lines of interlaced data to be presented on a non-interlaced output display device, and apparatus for generating lines of data to be presented on an interlaced display from a larger number of lines representing non-interlaced data.