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
Drinking glass with ball embedded in base
Systems and methods for detailed error reporting in data storage systems
Verbena plant named `Duempsopicha`
Processing autocomplete suggestions
Moving structure and micro-mirror device using the same
Dose escalation enzyme replacement therapy for treating acid sphingomyelinase deficiency
Sealing member for piezoelectric resonator device, and piezoelectric resonator device
  Randomly Featured Patents
Method for cleaning printing machines and printing moulds
Illumination optical apparatus, exposure apparatus, and device manufacturing method
Chicken growth hormone releasing hormone receptor
Mechanism for the installment of a door or other similar closure having a rotational-sliding movement
Storage unit for electronic devices
Support structure for retaining items in position
Shower system
Handle for a medical device
Silver ethylene oxide catalyst and process for preparation of the catalyst
Chicken interferon gene and novel recombinant DNA