Resources Contact Us Home
Graphics adapter

Image Number 5 for United States Patent #4897812.

A graphics adapter of the type whose operation is controlled by control data stored therein. The graphics adapter has two sets of loadable control data, one of which is used by a graphics processor in the graphics adaptor and the other of which is used by the processor for the system in which the graphics adapter is used. Because each processor has its own set of control data, control of the graphics adapter is rapidly and easily switched between the processors. Included in the graphics adapter is graphics control apparatus which contains storage for two sets of control data and operates under control of one or the other of them as determined by signals from the graphics adapter. The graphics control apparatus further includes state storage for retaining state necessary for resumption of operation for one processor after the other has used the graphics adapter. The graphics control apparatus can perform both byte and word operations and can emulate byte operations while operating in word mode. Further, the graphics control apparatus may employ either an external or an internal mask to mask data.

  Recently Added Patents
Systems, methods and apparatus for payment processing
Vehicle grille
Light-reflective anisotropic conductive paste and light-emitting device
Method of operating an electromechanical converter, a controller and a computer program product
Containers having radio frequency identification tags and method of applying radio frequency identification tags to containers
Automatic actuator for breakers or switches
Field emission cathode structure
  Randomly Featured Patents
Method and system of braking and asynchronous motor
Heat exchanger header
Mounting bracket coil spring
Method of compressing a midi file
Automatic gain controlled amplifier apparatus
Bipolar zero-gap type electrolytic cell
Diester crosslinked polyglucan hydrogels and reticulated sponges thereof
Personal communication device
Combined speech and alternate input modality to a mobile device
Luminaire with resilient sleeve and band connection