Abstract: An information handling apparatus for transferring and composing image signals including a plurality of media sources configured to provide a corresponding plurality of image signals, a media bus connected to the media sources, and a media control module coupled to the media bus. The media bus allows selective access for the plurality of image signals. The selective access enables composition of the independent image signals in response to control information. The media control module receives a composed image signal from the media bus and provides the composed image signal to a display device.

Abstract: An information handling apparatus for transferring and composing image signals for display. The apparatus includes a bus adapted to allow selective access for multiple independent image signals generated by respective independent image sources. The selective access enables composition of the independent image signals in response to control information; the composition enables real time display of a composed image signal.

Abstract: An information handling apparatus for transferring and composing image signals for display including a bus interface circuit adapted to allow selective access to a bus of an independent image signal generated by an independent image source. The selective access enables composition of the independent image signal in response to control information; the composition enables real time display of a composed image signal.

Abstract: An apparatus for scaling an image as represented by an arrangement of picture elements. The apparatus scales the image from a first size to a second size based upon plurality of scaling parameters which represent a desired scaling factor. The apparatus includes a scaler circuit which receives the plurality of scaling parameters and an image signal representing the arrangement of picture elements. The scaler circuit manipulates the arrangement of picture elements based upon the plurality of scaling parameters to provide a manipulated arrangement of picture elements. The manipulation includes performing different operations on subsets of the picture elements based upon the plurality of scaling parameters.

Abstract: The invention is a software reconfigurable cross point switch which selectively interconnects a plurality of phone lines and a plurality of shared resources such as call progress monitors, dual tone multifrequency (DTMF) receivers, DTMF automatic dialers and automatic answer tone detectors. The invention achieves its objective of enhanced switching efficiency and greater flexibility in the connectivity between diverse communications elements, by independently switching two separate switching planes of the cross point switch so as to enable different paths to be taken by the transmit portion and the receive portion of a particular telephone connection.The cross point switch architecture invention flexibly allows for many applications, one in particular being conference summing.

Abstract: The invention includes a first switch and a second switch serially connected between a telephone network line and a local telephone line which can be selectively connected to alternately either an auto answer modem or a human answer telephone set. A control register is associated with the local telephone line, having data contents representing whether the local telephone line is connected to the auto answer modem or alternately to the human answer telephone set. A billing delay element has an output connected to a control input of the first switch, for delaying the closure of the first switch for a predetermined interval after an answer tone is received over the telephone network line when the control register, which is connected to the control input of the first switch, indicates that the auto answer modem is connected to the local telephone line.

Abstract: A call progress monitor for a computer telephone interface system. Energy detectors are connected to receive signals from a telephone line. A bandpass filter is connected to the telephone line, having selectable center frequency. A counter-timer connected to count clock pulses is reset by the energy detector and timing commences in response to the presence of a signal on the telephone line. The counter will result in a center frequency control means for the filter being slewed over a bandwidth of interest, in synchronism with the counting of the timer-counter. A signal detector connected to the filter indicates the presence of a pair of signal tones passing through the filter as it is slewed. Decoding means are connected to the counter-timer and the signal detector for generating a binary signal indicating the frequency of the bandpass filter which passes each signal tone. The binary signal is entered in a data register, and an interrupt posted to a host computer.