Abstract: The instant invention provides a geothermal cooling system for cooling semiconductor PV panels operating in either concentrating or non-concentrating mode, which comprises heat sink mounted onto the underside of the silicon PV panel, a subterranean-level condenser, and other necessary equipment. Different embodiments of the geothermal cooling system are also provided in this invention.

Abstract: A system and method are described that reduce display subsystem power consumption in computer systems where image data is transferred from an image memory to a display each time a new image frame is displayed. In normal operation, the computer system displays uncompressed image data, which is stored in the image memory. After a period of display inactivity, a display processor compresses the uncompressed data and writes the compressed data to another location in the image memory. In subsequent display cycles, until there is display activity, the display processor retrieves the compressed data from the memory, decompresses it in real time and then transfers the decompressed data to the display. Entire images or segments of images can be compressed in this manner. Using the compressed image data saves display power as it requires fewer memory cycles to transfer from the memory to the display than the uncompressed data.

Abstract: Improved circuits for a MOS-RAM including an on chip TTL compatible high-level clock driver and sense amplifier. The driver employs a unique feedback and delay scheme allowing the high-level line to be quickly and efficiently discharged without using a large, high capacitance device. The upward swing of the control signal for the sense amplifier includes a perturbation which increases the sensitivity of the amplifier.