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

Image Number 4 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
Techniques for use with automated circuit design and simulations
Opacity technology
Adjusting acquisition protocols for dynamic medical imaging using dynamic models
Liquid suspension concentrate formulations containing saflufenacil
Light emitting devices having current reducing structures
Information processing device and program for display and use of multiple windows
Substituted 4-amino-3,5-dicyano-2-thiopyridines and use thereof
  Randomly Featured Patents
Incorporation of particulate additives into metal working surfaces
Ratchet-head conductor locking medium voltage electrical bus polymer insulator with pin mount
No-drill rear sight scope mount base
Wire pickling apparatus
Insulated gate bipolar transistor with reduced susceptibility to parasitic latch-up
Double seat plate
Imide-san polymer-blends
Active torque-split control system for actively distributing driving torques applied to wheels in four-wheel drive vehicles
Drop controller
Sequential oxidative and reductive bleaching of pigmented and unpigmented fibers