Kuo Chih Huang

US Patent:

55060170, Apr 9, 1996

Filed:

Jun 7, 1995

Appl. No.:

8/482510

Inventors:

Rajiv Y. Ranjan - San Jose CA
Kuo H. Huang - Sunnyvale CA
Caroline A. Ross - Mountain View CA

Assignee:

Komag Incorporated - Milpitas CA

International Classification:

B32B 302

US Classification:

428 657

Abstract:

This patent teaches a new method of roughening the surface of a magnetic recording medium in order to reduce the stiction and friction between a recording head and the medium to thereby improve mechanical reliability. During this method, the medium substrate is heated to form second phase precipitates which result in roughening of the medium surface. The medium roughness can be controlled by proper selection of the heating temperature and time and the substrate alloy. This results in improved contact-start-stop (CSS) performance of the medium. The method of the present invention allows for lower costs and potentially higher throughput than conventional texturing processes.

US Patent:

20230098236, Mar 30, 2023

Filed:

Sep 6, 2022

Appl. No.:

17/930041

Inventors:

- Cupertino CA, US
Habib S. KARAKI - Sunnyvale CA, US
James C. CLEMENTS - Campbell CA, US
Chin S. HAN - San Jose CA, US
Craig C. D'SOUZA - Pacifica CA, US
Daniel W. LABOVE - San Francisco CA, US
Esther CHEN - Fremont CA, US
Joseph R. LEE - Millbrae CA, US
Kuo Jen HUANG - San Jose CA, US
Wanfeng HUANG - Fremont CA, US
Fred Y. CHOU - Cupertino CA, US
Hongling CHENG - San Jose CA, US
Ali M. AMIN - Sunnyvale CA, US
Chia-Hsien LIN - San Jose CA, US

International Classification:

G01K 17/20
G01K 7/02

Abstract:

Robust estimation of temperatures inside and outside a device can be achieved using one or more absolute temperature sensors optionally in conjunction with thermopile heat flux sensors. Thermopile temperature sensing systems can measure a temperature gradient across two locations within the device, to estimate absolute temperature at locations that are impractical to measure using absolute temperature sensors. Using heat flux models associated with the device, the thermopile temperature sensing system can be used to estimate temperature associated with objects that contact an outer surface of the device, such as a user's skin temperature. Additionally, the thermopile temperature sensing system can be used to estimate ambient air temperature. Within a device, temperature measurements from the thermopile temperature sensors can be used to compensate sensor measurements, such as when the accuracy or reliability of a sensor varies with temperature.