Architecture And Method For Remote Platform Control Management

Abstract

An integrated circuit is a baseboard management controller that is a fully integrated system-on-a-chip microprocessor incorporating function blocks and interfaces that provide remote management solution. The integrated circuit uses a microprocessor, a media co-processor to accelerate video processing, and a set of system and peripheral functions that are useful in a variety of remote management applications. It further includes an integrated USB high-speed device and an OTG interface to support keyboard, mouse and mass storage emulation without additional external components, and two integrated MII LAN interfaces and one FSB interface, a memory controller to support a variety of static and dynamic memory components, an encryption controller to ensure secure remote management sessions and IPMI2.0-compliant BMC interfaces. The integrated circuit is based on structured ASIC technology, which enables easy customization of function blocks according to customer demands or new industry standards.

1 . An integrated circuit, comprising:
 a microprocessor;   a video sampling controller operating with the microprocessor to accelerate video processing and compressings; and   access circuitry coupled with the microprocessor and the video sampling controller to control access and management of remote devices, the access circuitry including at least one bus, general-purpose input/output (I/O) circuits and memory circuits;   wherein the video sampling controller further comprises:   a grabber for calculating a difference map between a first buffer and a second buffer and generating a list of modified regions from sampled data, and
 an encoder for operating on modified regions and transferring operated-on modified regions to a client, and 
   wherein the encoder provides four modes of operation to operate on the modified regions including
 uncompressed mode, 
 downscale uncompressed mode, 
 compressed mode, and 
 DCT mode. 
   
     
     
         2 . The integrated circuit of  claim 1 , wherein the video sampling controller operates in uncompressed mode on the modified regions by passing them through a null set operation unmodified. 
     
     
         3 . The integrated circuit of  claim 2 , wherein the video sampling controller operates in downscale uncompressed mode by downsampling the modified region. 
     
     
         4 . The integrated circuit of  claim 3 , wherein the video sampling controller is configured to operate in compressed mode by:
 a) determining longest pixel runs and line copies from pixel streams corresponding to the sampled data, wherein each pixel run is determined by looking for consecutive pixels that are equal within a predetermined margin and setting a pixel value for all such pixels based on a predetermined statistic and wherein the line copy is determined by looking for pixels on neighboring scan lines and assigning an identical value to all such lines if a predetermined criteria is met;   b) applying greyscale compression if a run value satisfies predetermined ;   c) running a re-accumulator to merge short runs that match as a result of encoder processing;   d) applying a color reduction process to decrease size; and   e) formatting the output.   
     
     
         5 . The integrated circuit of  claim 4 , wherein the video sampling controller operates in DCT mode by performing a discrete cosine transform on the modified regions.