Abstract: Highly asymmetrical nature of digital video allows a single Cable Modem Termination System (CMTS) like device to support the transmission over a thousand individual high-quality IP packetized video data channels terminating into low cost cable modem units. A Video Modem Terminating System (VMTS) unit handles housekeeping information. As the amount of upstream housekeeping data are small, even for 1000 simultaneous TV channels, the data can be inserted into the digital video cell streams and packaged within IP packet envelopes. The VMTS unit is equally effective for MPEG-2, MPEG-4, Microsoft Media 9 and other digital encoding of video and audio signals.

Abstract: A device for the removal of a blockage in a passageway such as a dialysis graft or in a body passageway includes a catheter for reception and aspiration of the blockage and an occlusion engaging element distal of the distal end of the catheter which occlusion engaging element is supported on a wire that extends through the catheter. At the distal end of the catheter, there is a device such as a multi-wing malecot expansion device that is expanded after the catheter is placed in position so as to block the occlusion from passing around the outside of the catheter. The support wire can be a movable core guide wire which has a braided device on its distal end. When the core is as distal as possible of the distal end of the shell, the braid is in a collapsed minimum diameter state for insertion through the catheter and through the occlusion. Proximal movement of the core causes the braid to expand to the wall of the graft.