Search

Prasad V Venugopal

from Cupertino, CA
Age ~53

Prasad Venugopal Phones & Addresses

  • 11557 Fallcreek Spring Ct, Cupertino, CA 95014 (408) 564-4458
  • Santa Clara, CA
  • San Jose, CA
  • Sunnyvale, CA

Work

Position: Professional/Technical

Education

Degree: Graduate or professional degree

Publications

Us Patents

Absolute Position Detection Within 1 Revolution Using 3-Channel Incremental Encoders With High Resolution Index Track

View page
US Patent:
5939712, Aug 17, 1999
Filed:
May 30, 1997
Appl. No.:
8/866033
Inventors:
Prasad V. Venugopal - Sunnyvale CA
Nan Jiang - Fremont CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01D 534
US Classification:
25023113
Abstract:
The quasi-absolute encoder module determines absolute position within one mechanical rotation. The encoder module includes a three channel position encoder and detection circuitry that includes a read-only memory (ROM). There are three channels: A, B, and I. Channels A and B have four periods and channel B is offset from channel A by 90. degree. in phase. Channel I has a unique sequence. The address generated by sampling this unique sequence corresponds to an address in ROM. The address indicates the position of the rotating shaft on which the codewheel is attached.

Absolute Position Detection Within 1 Revolution Using 3-Channel Incremental Encoders With High Resolution Track

View page
US Patent:
5998784, Dec 7, 1999
Filed:
May 8, 1998
Appl. No.:
9/074990
Inventors:
Prasad V. Venugopal - Sunnyvale CA
Nan Jiang - Fremont CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01D 534
US Classification:
25023113
Abstract:
The quasi-absolute encoder module determines absolute position within one mechanical rotation. The encoder module includes a three channel position encoder and detection circuitry that includes a read-only memory (ROM). There are three channels: A, B, and I. Channels A and B have four periods and channel B is offset from channel A by 90. degree. in phase. Channel I has a unique sequence. The address generated by sampling this unique sequence corresponds to an address in ROM. The address indicates the position of the rotating shaft on which the code wheel is attached.
Prasad V Venugopal from Cupertino, CA, age ~53 Get Report