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
Leveraging RFID generated consumer behavior through a web map service
Hybrid powertrain with manual transmission and off-latching clutch, and method of operating the same
Managing and reconciling information technology assets in a configuration database
(4-phenyl-piperidin-1-yl)-[5-(1H-pyrazol-4-yl)-thiophen-3-yl]-methanone compounds and their use
Algorithm of Cu interconnect dummy inserting
Testing a system management program
CTLA4 proteins and their uses
  Randomly Featured Patents
Variable air speed aspirating smoke detector
Strongback and method for positioning same
Dynamoelectric machine stator having concentric amorphous metal laminations and method of making same
Method of structuring with metal oxide masks by reactive ion-beam etching
Programmable measurement system with modular measurement modules that convey interface information
Network reputation and payment service
Method of fabricating semiconductor device
Facet arthroplasty devices and methods
Inhibiting denaturation of nucleic acid duplexes
Method for producing artificial tree bark