Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Patching of a read only memory










Image Number 3 for United States Patent #6260157.

A processing device includes a ROM having program instructions and at leas one jump instruction stored therein, a patch program for patching the program instructions in the ROM, a RAM capable of storing the patch program and a patch vector table that indicates the location of the patch program. A processor executes the program instructions in the program ROM and uses the patch vector table to execute the patch program when one of the jump instructions is reached. The patch program may be stored in the RAM and the patch vector table may point to the address in the RAM at which the patch program is stored so that the processor jumps directly to the RAM to execute the patch program when it reaches the one of the jump instructions. Likewise, a patch engine may be used to locate a specified patch program, load the specified patch program into the RAM and execute the specified patch program when the processor reaches the one of the jump instructions.








 
 
  Recently Added Patents
Method of and apparatus for recording motion picture, which generate encoded data with higher compression efficiency using a motion vector similarity
Controller
Vertical axis wind turbines
Multiplanar image displays and media formatted to provide 3D imagery without 3D glasses
Searchlight
Notebook computer
Asset control in location tracking system
  Randomly Featured Patents
Mobile station apparatus and control channel decoding method
System and method for linking multiple entities in a business database
Tailpulse signal generator
Brassiere
Uretdione group-containing polyurethane oligomers and aqueous dispersions thereof
Shaped section for the guidance and sealing of a movable window, in particular of a motor vehicle door, and its method of manufacture
Indicia reading terminal with color frame processing
Edge protector angle piece
Redundant circuits and methods therefor
Sliding component and compressor