Resources Contact Us Home
A/D conversion apparatus

Image Number 13 for United States Patent #7663520.

An A/D conversion apparatus performs motor current detection in an A/D conversion period corresponding to two phases out of three phases of a sinusoidal drive motor, using reduced register resources while minimizing the number of A/D converters. The A/D conversion apparatus includes: a selection unit selecting one of a plurality of input channels; an A/D converter converting an analog signal from the selected input channel to a digital signal; a start register holding a start channel number of sequential conversion; an end register holding an end channel number of the sequential conversion; a prohibition information holding unit holding prohibition information indicating an input channel to be excluded from the sequential conversion; and a control unit causing the selection unit to select, in channel number order, input channels corresponding to channel numbers from the start channel number to the end channel number except the input channel indicated by the prohibition information.

  Recently Added Patents
Method and device for reliable estimation of network traffic
High conductive water-based silver ink
Device to facilitate moving an electrical cable of an electric vehicle charging station and method of providing the same
Tactile output device for computing device notifications
System for encrypting and decrypting a plaintext message with authentication
Simplifying lexicon creation in hybrid duplicate detection and inductive classifier systems
Managing delivery of application server content
  Randomly Featured Patents
Judging method and a precoding apparatus
Beam for a drywall ceiling soffit
Suspension control system using a variable threshold value to limit the amplitude of vertical vibrations
Skylight with a remotely operable light intensity reducing mechanism
Coffee foaming sweetener
Contact housing for an electrical connector
Method for producing light-emitting material
Chain tensioner for automotive engine