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, base station and system for adjusting cell wireless configuration parameter
Image heating apparatus
Center spreader adapter tool for toilet paper rolls and paper towel rolls that do not have inner cardboard tubes
Wind farm, wind power plant in a wind farm and operating control for this purpose
Electrical connector
Partial response decision feedback equalizer with distributed control
Devices and methods for the production of coaxial microfibers and nanofibers
  Randomly Featured Patents
Storage volume handling system which utilizes disk images
Electronic device and method of generating composite electrical signals
Figure-like toy projectile and launching platform assembly
Fixture for fitting pipe joint to change-over valve
Bituminous compositions having high adhesive properties
Seat-occupant restraining apparatus
Process for metal deposition of a non-conductor substrate
Foamed thermoset articles and processes
Magnetic recording system
Piezoelectric electroacoustic transducer