Wolfgang W Himmelbauer

US Patent:

20030023777, Jan 30, 2003

Filed:

Jul 27, 2001

Appl. No.:

09/916786

Inventors:

Ken Fields - San Jose CA, US
Wolfgang Himmelbauer - San Jose CA, US
Aashit Patel - San Jose CA, US
Dave Ritter - , US

International Classification:

G06F003/00

US Classification:

710/003000

Abstract:

A method for identifying and assigning an address of a particular device is disclosed. The method includes discharging a capacitor in response to a first command from a host. A voltage of the discharged capacitor is then measured in response to a second command from the host. The address is assigned to the particular device when the voltage indicates that the particular device is an intended destination of the address.

US Patent:

20150280729, Oct 1, 2015

Filed:

Jun 12, 2015

Appl. No.:

14/737928

Inventors:

- San Jose CA, US
Wolfgang Himmelbauer - Palo Alto CA, US

International Classification:

H03M 1/46

Abstract:

A capacitive digital to analog converter (DAC) includes a first switching device that receives first, second, third, and fourth reference potentials at respective inputs and that selectively connects one of the first, second, third, and fourth reference potentials to a first output. The first and second reference potentials are approximately equal. The third and fourth reference potentials are approximately equal. A first capacitor is connected between the first output and a common node. A second switching device receives the first, second, third, and fourth reference potentials at respective inputs and selectively connects one of the first, second, third, and fourth reference potentials to a second output. A second capacitor is connected between the second output and the common node.