Abstract: A reconfigurable chassis provides thermal management of external electrical modules that are inserted into the chassis and removed from the chassis. The chassis includes a housing into which modules are inserted, and the housing has a front portion and a back portion and further has multiple guides for holding the modules. A removable fan tray is located on top of the housing. The removable fan tray holds fans in first and second positions, wherein, when the fans are located in the first position, air is directed from the front portion of the chassis, and wherein, when the fans are located in the second position, air is directed from the back portion of the chassis. The chassis also includes a removable rear connector panel for use when electrical cables coupled to the modules are to be accessed from the back portion of the housing. The removable rear connector panel is mounted to the back portion of the housing for electrically coupling to the electrical cables that are coupled to the modules.

Abstract: A video compression system comprises a control computer 52; a plurality of encoders 54, 56, 58; a plurality of encoder buffers 60, 62, 64; a multiplexor 66; a data channel 70; a demultiplexor 80; a decoder buffer 82; a decoder 84; and display 86. The control computer controls the encoders and the multiplexor 66 to avoid overflows and underflows of data provided to the decoder buffer 82.

Abstract: The present invention relates to an improved demodulator for locking onto and tracking a carrier. Harmonic frequencies are occasionally generated by demodulation circuitry. When this occurs, the harmonic frequencies can interfere with the demodulator's locking and tracking functions, especially if the harmonic frequencies are near a down converted carrier's frequency. A system and method are disclosed which provides an offset to a frequency synthesizer whose output frequency is used to down convert the carrier. The offset alters the frequency of the down converted carrier so as to shift it away from the interfering harmonics. In this regard, the demodulator is enabled to lock onto and track a carrier when previously not possible.