Hewlett-packard Development Company, L.p.

David K Klaffenbach

Algird M Gudaitis

Chadwick W Stryker

Michael J Campin

Rick Minoru Tanaka

Christopher M Lesniak

David A Rehmann

Gary L Miller

Jon S Boehm

Jeffrey S Mathena

A system is provided that includes an encoder strip having encoder markings, first and second optical encoders positioned at a fixed distance from one another on a substrate and, responsive to being moved along the encoder strip, configured to generate first and second signals, respectively, that each indicate detection of the encoder markings on the encoder strip and processing circuitry configured to determine a current phase difference between the first and the second signals using a first portion of the first signal that corresponds to a first plurality of encoder markings and a second portion of the second signal that corresponds to a second plurality of encoder markings.

Determining encoder strip expansion

Embodiments of power supply circuits are disclosed in which a filter function is performed on a count value from a counter that counts the number of times of enabling of a power supply circuit.

Power supply circuit

Embodiments of a switching power supply circuit are disclosed wherein the number of times that a switch of the circuit is enabled is counted.

System and method for determining the power drawn from a switching power supply by counting the number of times a switching power supply switch is enabled

Various methods and apparatus relating to an encoder are disclosed.

Encoder

Various embodiments of a sheet separation system are disclosed.

Growing community of inventors

Battle Ground, WA, United States of America

David K Klaffenbach