Resources Contact Us Home
Bit map image processing apparatus having hardware window function

Image Number 3 for United States Patent #4933877.

A bit map image processing apparatus includes a window detector for detecting a window position on a screen and a frame memory for storing image data. The frame memory has p 2-port memories each having an l bits.times.m (column).times.n (row) memory area. Each row of the two-dimensional memory area of the frame memory is divided and managed in units of l.multidot.p bits. The apparatus further has a first multiplexer for selecting as a read memory address one of a background memory address and a window memory address in accordance with a detection result of the window detector, a second multiplexer for selecting as a memory address one of read address output from the first multiplexer and a write address input thereto in accordance with the detection result of the window detector, an address converter for converting the memory address output from the second multiplexer into individual memory addresses for each 2-port memory, and a shift register section for converting into serial data the image data output in units of l bits from the p 2-port memories in accordance with the individual memory addresses.

  Recently Added Patents
Variable month cross-platform photo calendar builder
Synthesis of amines and intermediates for the synthesis thereof
Adaptive contact window wherein the probability that an answering user/expert will respond to a question corresponds to the answering users having response rates that are based on the time of
Digital broadcasting system and method of processing data in digital broadcasting system
Adaptive switch mode LED system
Profiled rail for advertising/display units
Method of operating an electromechanical converter, a controller and a computer program product
  Randomly Featured Patents
Low lift golf ball
Shield connector
Salts of HIV inhibitor compounds
Computer system security method and apparatus for creating and using program authorization information data structures
Construction comprising tie layer
Method for simulating a shock pulse
Symmetric multiprocessing computer and star interconnection architecture and cooling system thereof
Radiolabelled amino acid formulations stored in an unfrozen state
Photoconductive compositions comprising an organic photoconductor and an amide compound and electro-photographic light-sensitive materials using the compositions
Filter cartridge inlet grill pattern