Feng Ling Li

US Patent:

53413601, Aug 23, 1994

Filed:

Jun 5, 1992

Appl. No.:

7/893777

Inventors:

Donald F. Johann - Palo Alto CA
Alan C. Burroughs - San Jose CA
Neil T. Phipps - Fremont CA
Feng Li - Fremont CA

Assignee:

Maxoptix Corporation - San Jose CA

International Classification:

G11B 7125

US Classification:

369116

Abstract:

In an optical recording system employing a laser for writing digital data onto a storage medium, an apparatus and method for calibrating a laser to a power level which minimizes write errors. A calibration profile is generated by writing test data patterns onto the storage medium by using a number of different predetermined laser power levels. The test data patterns are then read back. The number of write errors is determined for each of the different laser power levels by comparing the written data patterns to the read back data patterns. The calibration profile denotes the number of write errors as a function of laser power levels. Next, an optimum laser power is determined corresponding to an average of an upper and a lower knee of the calibration profile. The laser is calibrated to this optimum power level.

US Patent:

20180109722, Apr 19, 2018

Filed:

Oct 18, 2016

Appl. No.:

15/296892

Inventors:

- Palo Alto CA, US
Fan Sai Kuok - Burlingame CA, US
Jannie Lai - Berekely CA, US
Jared Torres Calinisan - Brentwood CA, US
Feng Li - Fremont CA, US

International Classification:

H04N 5/232
H04N 5/225
H04N 5/907

Abstract:

A camera device including multiple optical chains receives user input indicating one or more user selectable control option setting(s), e.g., a user selected depth of field control option setting and an aspect ratio control option setting. The indicated control option settings are stored in memory in the camera device. Multiple optical chains of the camera device capture an image during an image capture time interval. A set of captured images are stored in a file along with metadata including the user indicated control option settings. A composite image is generated from a set of captured images in accordance with the stored indicated control option settings, e.g., generating a composite image with a user selected depth of field and/or a user selected aspect ratio. In some embodiments, at least some of the user selected control option settings are not used during image capture operations but are used in subsequent image processing.