Abstract: The present invention is a sitting device that gives the user an option to sit with one side of his/her lower portion of the body (e.g., buttock, thigh and leg) supported by a half seat, while maintaining a standing posture with the unsupported leg. Since the standing posture naturally keeps the lumbar lordosis, the device eliminates the source of sitting-related back pain. In an embodiment, the sitting device includes two half seats that can be raised or collapsed individually, and a foot stool for the foot to rest in case it is raised. The user can change the positions of the half seats manually by pushing one of the provided buttons. Or it can be automatic if the user uses a controller to program how frequently the half seats alternate, or both of them be in supporting position at the same time to use the device as an ordinary chair.

Abstract: A controller card is provided that allows the processing and display of two types of graphics pixel data for display in two environments. The card contains a first graphics controller chip coupled to the video capture port of a second graphics controller chip. In a first mode the first chip may generate graphics pixel data for display in a first environment. The pixel data is stored in the memory of the second chip reserved for graphics pixel data and transmitted to a display device coupled to the second chip. In a second mode, the video capture port may be coupled to a video source so that data captured in the video port is stored in the memory of the chip reserved for video pixel data. The second chip may then process and output to the display device both video pixel data and a second type of graphics pixel data generated by the second chip and stored in the memory of the second chip reserved for graphics pixel data.