Zhong Y Li

US Patent:

7843979, Nov 30, 2010

Filed:

Mar 31, 2006

Appl. No.:

11/394440

Inventors:

Theodore D. Rees - Mountain View CA, US
Zhong Li - Campbell CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

H01S 3/00

US Classification:

372 3802, 372 3807

Abstract:

Circuits and methods for damping out parasitic resonance within a packaged integrated circuit (IC) are provided. A conductive path including a resistor and a conductor is added in parallel with a conductive path that provides power to components within a die of the packaged IC. When implemented in a packaged laser driver integrated circuit (IC), a conductive path including a resistor and a conductor in placed in parallel with a conductive path that provides a laser driver output, of the packaged laser driver IC, to a laser diode. This abstract is not intended to be a complete description of the various embodiments of the present invention.

US Patent:

7907061, Mar 15, 2011

Filed:

Apr 10, 2008

Appl. No.:

12/101047

Inventors:

Xijian Lin - Fremont CA, US
Zhong Li - Campbell CA, US
Wendy Ng - San Jose CA, US
Phillip J. Benzel - Pleasanton CA, US
Oleg Steciw - Los Altos CA, US

Assignee:

Intersil Americas Inc. - Milpitas CA

International Classification:

G08B 21/00

US Classification:

3406866

Abstract:

In an embodiment, a proximity sensor includes a driver, a photo-diode (PD) and an analog-to-digital converter (ADC). The proximity sensor can also include a controller to control the driver. The driver selectively drives a light source, e. g. , an infrared (IR) light emitting diode (LED). The PD, which produces a current signal indicative of the intensity of light detected by the PD, is capable of detecting both ambient light and light produced by the light source that is reflected off an object. The ADC receives one or more portion of the current signal produced by the PD. The ADC produces one or more digital output that can be used to estimate the proximity of an object to the PD in a manner that compensates for ambient light detected by the PD and transient changes to the detected ambient light.

Author:

Zhong Li

ISBN #:

3540268995

Author:

Zhong Li

ISBN #:

3540332200