Evertz Microsystems Ltd.

Romolo Magarelli

Rakesh Thakor Patel

Semko Szybiak

Eric Fankhauser

Alan Plaunt

Daniel G Turow

Dan Turow

Apparatus, systems and methods for receiving one or more input signals and providing output signals in various video, audio, data and mixed formats are described. One or more input processors receive the input signals. Each of the input processors provides one or more packetized signals corresponding to one or more of the input signals received at the input processor. Each output processor can receive one or more packetized signals and generate one or more output signals. The output signals correspond to one or more of the input signals, additional locally generated signals or data relating to the signals or any combination of such signals. Use of a packet router according to the invention allows input signals encoded as one set of packetized signals to be recombined to provide additional packetized signals incorporating the same or different combinations of the packetized signals.

Apparatus, systems and methods for packet based transmission of multiple data signals

Apparatus, systems and methods for receiving one or more input signals and providing output signals in various video, audio, data and mixed formats are described. One or more input processors receive the input signals. Each of the input processors provides one or more packetized signals corresponding to one or more of the input signals received at the input processor. Each output processor can receive one or more packetized signals and generate or more output signals. The output signals correspond to one or more of the input signals, additional locally generated signals or data relating to the signals or any combination of such signals. Use of a packet router according to the invention allows input signals encoded as one set of packetized signals to be recombined to provide additional packetized signals incorporating the same or different combinations of the packetized signals.

Packet based transmission of multiple data signals

A plurality of systems for routing signals are described. The system includes a cross point switch that can couple any one of a plurality of input terminals to a plurality of output processor terminals. Signals received at the input terminals are coupled to corresponding output terminals and are processed by output modules. The resulting processed signals are provided at output terminals. In some embodiments, one or more input modules are provided to process input signal prior to routing through the cross-point switch.

System and method for signal processing

A circuit for detecting a transition in the content of a digital video stream containing embedded audio samples and providing a smooth transition from an old audio stream embedded before the transition to a new audio stream embedded after the transition. The circuit detects the transistion and in response it fades out the old audio stream and fades in the new audio stream. During the transition, the old and new audio signal are buffered. The old stream is not faded out until only a number of audio samples required for the fading process remain in the associated buffer. The new audio stream is not faded in until a selected number of audio samples have been stored I the associated buffer. The selected number of samples is typically smaller than the number of samples that is desirably stored in the associated buffer during steady state operation. An interpolation operation is used to allow the number of new audio samples in the associated buffer to build up to the desired number.

Circuit and method for live switching of digital video programs containing embedded audio data

A system for detecting picture freeze within a video signal wherein a video signal processing portion for connection to a video signal source comprising digital video luma samples and digital video clock and timing signals separately detects motion across the vertical axis of the video picture and across the horizontal axis of the video picture and wherein a frozen picture indicating portion connected to the output of the video signal processing portion determines the number of motionless video picture frames occurring since the last video picture frame in which motion was detected to indicate picture freeze when the number of motionless video picture frames reaches a predetermined value. A noise reduction threshold signal is applied to the video signal processing portion to distinguish motion from background noise in a video signal.

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Kleinburg, Canada

Romolo Magarelli