John Walter Frame

US Patent:

8031176, Oct 4, 2011

Filed:

Jan 22, 2008

Appl. No.:

12/009863

Inventors:

Steven Sanders - Belmont CA, US
John Frame - Arcadia CA, US
Brian Todoroff - San Jose CA, US
Yansun Xu - Mt. View CA, US

Assignee:

Cypress Semiconductor Corporation - San Jose CA

International Classification:

G09G 5/08

US Classification:

345166, 345175, 345157, 178 1809, 463 37

Abstract:

An optical navigation apparatus including a package incorporating a light source and a single die of silicon. The single die of silicon includes a photodiode array configured at the detection plane to receive the speckle pattern of the scattered light from the collection optics, circuitry configured to process signals from the photodiode array to determine changes in position of the apparatus relative to the tracking surface, analog circuitry configured to control and drive current through the light source, interface circuitry configured to communicate position data by outputting the position data via a data interface, a microcontroller comprising a processor core and memory for storing computer-readable code and data, and a system bus configured to communicate instructions and data between the microcontroller and said digital, analog, and interface circuitries. Other embodiments, aspects and features are also disclosed.

US Patent:

20120320385, Dec 20, 2012

Filed:

Sep 29, 2011

Appl. No.:

13/248355

Inventors:

Jinghui MU - San Jose CA, US
Brett Alan SPURLOCK - Felton CA, US
Yansun XU - Mountain View CA, US
John FRAME - Arcadia CA, US
KeCai ZENG - Fremont CA, US
Brian TODOROFF - San Jose CA, US

Assignee:

CYPRESS SEMICONDUCTOR CORPORATION - San Jose CA

International Classification:

G01B 11/14
G01B 11/22

US Classification:

356624

Abstract:

Optical navigation modules and methods of operating the same to sense relative movement between the optical navigation module and a tracking surface are provided. In one embodiment, the optical navigation module comprises: (i) a light source to illuminate at least a portion of a surface relative to which the optical navigation module is moved; (ii) an integrated circuit (IC) including a photo-detector array (PDA) to detect a light pattern propagated onto the PDA from the surface, and a signal processor to translate changes in the light pattern propagated onto the PDA into data representing motion of the optical navigation module relative to the surface; and (iii) a substrate to which the light source and IC are mounted, the substrate including an aperture in a light path between the surface and the PDA. Other embodiments are also disclosed.