Frank C Cheung

US Patent:

20050023469, Feb 3, 2005

Filed:

Jul 28, 2003

Appl. No.:

10/629042

Inventors:

Richard Chin - Torrance CA, US
Frank Cheung - Agoura Hills CA, US
Eric Sutton - Los Angeles CA, US

International Classification:

G01J005/02

US Classification:

250352000

Abstract:

A system and method for stabilizing the temperature of a detector array. The novel invention () includes one or more video reference pixels () adapted to output a reference signal that is responsive to the temperature of the detector array (), and a mechanism for adjusting the temperature of the detector array () based on the reference signal. In the illustrative embodiment, the mechanism includes a thermal electric cooler () and a processor () running a control algorithm () which calculates the amount of current which should be applied to the thermal electric cooler () based on the reference signal from the video reference pixels (). The video reference pixels () are constructed from the same substrate as the detector array (), but are constructed in a manner such that they do not respond to changes in scene illumination.

US Patent:

20160055035, Feb 25, 2016

Filed:

Mar 6, 2015

Appl. No.:

14/640338

Inventors:

- Waltham MA, US
Harry B. Marr - Manhattan Beach CA, US
Frank N. Cheung - Agoura CA, US

International Classification:

G06F 9/50

Abstract:

A method for scheduling a plurality of resources for processing a plurality of requests is provided. The method sorts the requests, each specifying a priority and one or more resources that process the request, in parallel based on the priorities. The method initializes an output set to an empty set and filters out any request that has a resource conflict with a current highest priority request, adds the current highest priority request to the output set and determines whether one or more requests of the plurality of requests, other than the requests added to the output set, are not filtered out. Responsive to determining that the one or more requests are not filtered out, repeating filtering, adding, and determining by using a highest priority request of the one or more requests as a current highest priority request. The method causes the assigned resources to process the output set of requests in parallel.