Resources Contact Us Home
Data input/output system

Image Number 13 for United States Patent #6901470.

A data I/O system includes first and second function blocks connected to a system bus, which allows the function blocks to communicate with a processor. Each function block includes a D/A converter for outputting an analog signal and a waveform generator that provides a digital signal to the D/A converter. The waveform generator includes a memory control circuit and an address generation circuit. The memory control circuit has an address register and a data register, both of which are connected to the system bus, and a memory connected to the address register and the data register. The address generation circuit is connected to the address register and includes a control register, an up-down counter, and a comparator. The address generation circuit repetitively provides a circulating address signal to the address register. The function blocks relieve the processor of some of its processing load, but do not require additional I/O port addresses of the system.

  Recently Added Patents
Cycloalkylamine substituted isoquinoline derivatives
Cake knife handle
Method of fabricating CIGS by selenization at high temperature
Chemical method of making a suspension, emulsion or dispersion of pyrithione particles
Phase-change memory device having multiple diodes
Rear body panel cover for a motor vehicle
Housing for gas flow indicator
  Randomly Featured Patents
Display apparatus and its cooling method
Energy efficient power adapter
Methods and systems for automated migration of cloud processes to external clouds
Inverted telephoto type wide angle lens system
Selective coating apparatus
Electronic instrument for measuring the overall phase and amplitude distortion of a transmission channel
Detergent tablet
Process for the production of carbon fiber reinforced magnesium composite articles
Image-taking apparatus and focusing method
Frame error rate estimation in a receiver