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
Power management implementation in an optical link
Cellulose derivative and hydrogel thereof
Handheld electronic communication device having sliding display
Circuit arrangement and method for operating a circuit arrangement
Method and apparatus for linking a web browser link to a promotional offer
  Randomly Featured Patents
Anchoring element
Antigenic composition obtained by V8 proteolysis of a protein from S. mansoni
Device and method for runner-less molding of thermosetting resin and rubber
RFID detection and identification system for implantable medical lead systems
Modular utility assembly
Electro-therapeutic device
Mobile telephone with an internal inkjet printhead arrangement and an optical sensing arrangement
Powder pressing apparatus and powder pressing method
19-Hydroxy-PG amides