This series of photographs was taken at a corporate sales meeting held at the San Francisco Marriott Hotel. A media-intensive show, this installation used three cameras in the ballroom, and another backstage to capture still images for manipulation with several computer graphics systems. Several video projection screens were rigged to display I-MAG (image magnification) as well as videotape playbacks and numerous computer generated elements. Included in the mix were a number of Sony CRV machines, which are recordable laserdisks with custom control software programs running on Macintosh computers. The main production switcher was a Grass Valley Model 110CV, which is the component version of the venerable Model 110N. All signals were in RGB/Sync or Betacam Y/C/C format, except for three Amiga Toasters, which needed to be decoded. We used Grass Valley decoding and transcoding equipment for this task. Switching was augmented with a Sony DFS-500 DME, which is a 4-input, 2-channel digital video effects unit which operates in all common signal formats. Most videotape playbacks were "flown" or tumbled onto the projection screens using this device as a downstream key input to the Model 110CV. All component video signals were first delivered to a Utah Scientific 30x20, 4-level routing matrix switcher. The fourth level of the router handled NTSC composite signals in parallel so that various backstage and onstage monitors could be fed with any source or main output. This installation is typical of the types of projects designed and connected on site by LJ Video Engineering. Here is a collection of six photographs showing most of the backstage video gear... The stage in the ballroom (33kb) Computer graphics area looking toward the production switcher. (59kb) Looking toward the video terminal & routing racks. (52kb) Looking toward the computer graphics area. (52kb) Looking toward the videotape area. (61kb) Thick pile of RGB cables behind the video terminal racks. (54kb)