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 and device for operating a vehicle having a hybrid drive
Adaptive take-off strips for smoothing ink consumption
System and method for generating profile morphing using cephalometric tracing data
Wake-up radio system
Cellulose acylate laminate film, method for producing cellulose acylate laminate film, polarizer and liquid crystal display device
Message transfer apparatus, output method, and computer program product
Process for producing a carbon-comprising support
  Randomly Featured Patents
Motorized climbing hunting stand
Nine gemstone pendant setting
High temperature resistant polysulfone-polyimide block copolycondensates and preparation thereof by melt condensation
Buffer allocation using probability of dropping unordered segments
Oil based mud imaging tool with common mode voltage compensation
Rotatable shaft coupling
Light emitting diode device
Method for treating a waste water containing a nonionic surface active agent
Method of making a MOS-gated transistor with reduced miller capacitance
Method of manufacturing heat sink using clad metal