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
High damage threshold frequency conversion system
Fabric care compositions comprising front-end stability agents
Centralized behavioral information system
Support member, rotation device comprising such a support and rolling bearing assembly including such a detection device
Transmission terminal, transmission system, transmission method, and recording medium storing transmission control program
Image processing system, image processing apparatus, control method for image processing apparatus, and storage medium
  Randomly Featured Patents
Virtual network architecture
Magnetic compact case
Printing cylinder with clamping channel and rotatable spindle clamping mechanism
Connector components and methods of use
Methacrylic acid addition salt of 2-mono(lower)alkyl amino ethyl methacrylate
Tank constructions for containing fuel, and water separators for fuel feed systems
Method and apparatus for repairing pallets
Postpurge pilot burner sequencing means
Apparatus and method for filtering light in a thermal processing chamber
NAT traversal for media conferencing