GemView is a GPK file viewer, where GPK is our proprietary file format, based on XML, for advanced System-in-Package (SiP) physical designs. GPK file is used as the primary database of GemPackage.
In advanced SiP development projects, SiP customers need in-depth access to the internal design data of SiP R&D team, to acknowledge BGA pins and chip IO pins being net assigned right, and the routed reasonably each other to carry high speed signals. GemView fits well for such needs, if SiP R&D team uses GemPackage for feasibility study (FS). Customer can observe the latest FS result of the R&D team. Naturally, what you observe in GemView is exactly what R&D team observe in GemPackage, then the communication with them will become smooth and easy.

Similar situation can be found also inside the semiconductor maker; in marketing team, in sales team, and in factory preparation teams. GemView can be useful for them as well.

Using GemView, when you open the FS data in GPK file, provided by R&D team, you will see the chip placement, bonding wires, substrate routings being shown graphically on the canvas window. You can highlight those objects buss by buss (net type), wire height by wire height (in chip/wire stucked designs), layer by layer (e.g. to check return path problems), etc in easy operation. Beside the canvas window, tables are shown for net list, IO list, ball list, wire list, etc for spreadsheet like examination. By using those tables and canvas in an interactive way, you can highlight routings in flexible manner. Since GPK supports 'Super Hierachical' nature, system wide global routing can be observed beyond the design hierarchy in bird view, in Package-on-Package (PoP) and Chip-Package-Board (CPB) designs. Further, 3D observation is simple and easy since GemView can produce 3D model files for Google Earth / Google SketchUp.

The main difference between GemView and the R&D team's GemPackage is that GemView concentrates on 'observing' functionality. GemPackage has further functionalities for creating/modifying design objects and for defining/refering/checking design rules.