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

Image Number 14 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
Method for automatically estimating inertia in a mechanical system
Information processing apparatus, information processing method, and program
Signal processing apparatus and methods
O-space imaging: highly efficient parallel imaging using complementary nonlinear encoding gradient fields and receive coil geometries
Device and method including a soldering process
Multibranched polymer and method for producing the same
  Randomly Featured Patents
Method for forming a self-aligned contact
Check valve
Silicon thyristor sensitive to low temperature with thermal switching characteristics at temperatures less than C
Drill guide
Gas delivery method and system including a flow ratio controller using a multiple antisymmetric optimal control arrangement
Runtime system for executing an application in a parallel-processing computer system
Vibration input to moving aqueous cementitious slurry
Transaxle apparatus for four-wheel drive vehicle
Construction spacer
Method of removing carbonaceous impurities in carbon nanotubes