Michael Mun Liu

US Patent:

20040030428, Feb 12, 2004

Filed:

May 5, 2003

Appl. No.:

10/429235

Inventors:

Myrick Crampton - Mt. Pleasant SC, US
Michael Liu - Germantown MD, US
Jay Harrison - Mount Airy MD, US

Assignee:

Manugistics, Inc.

International Classification:

G06F019/00

US Classification:

700/101000

Abstract:

The present invention optimizes shop floor operations by generating production schedules that respect the complex manufacturing rules of specified production operations. The invention utilizes attribute-sensitive changeover models that consider both the duration and cost of each changeover. Since the invention considers more than just the item, changeover models can be based at the item level and the item attribute level. The invention includes realistic models that simulate operations for a variety of process and discrete manufacturing work centers and departments. These models support reusable and auxiliary resources, resource groups, user-defined units of measure, detailed bills of material (BOMs), production rate models, and production method models. The sequencing invention can be integrated with other planning optimization systems, including planning and scheduling engines, to provide further shop floor optimization to productively drive the sequencing of a complex business.

US Patent:

20100057472, Mar 4, 2010

Filed:

Oct 9, 2008

Appl. No.:

12/248506

Inventors:

Hanks Zeng - Red Bank NJ, US
Nelson Sollenberger - Farmingdale NJ, US
Radhakrishnan Kuzhipatt - Irvine CA, US
Michael Liu - Sunnyvale CA, US
Taiyi Cheng - San Jose CA, US
Hongwei Kong - Denville NJ, US

International Classification:

G10L 21/00

US Classification:

704500, 704E19001

Abstract:

In a method and system for frequency compensation in an audio CODEC, a filter in a hardware audio CODEC may be configured based on power consumption and based on a frequency response of an active output device to which the filter is communicatively coupled. The filter may comprise a plurality of filter stages, which may be, for example, biquads, and the filter may be configured by enabling or disabling one or more of the stages. In this manner, power consumption of the filter may be managed by enabling and/or disabling one or more stages. Configuration of the filter may be performed dynamically depending on whether one or more audio output devices may be active. In this regard, which output device is active and its frequency response may be determined and filter coefficients may be reconfigured upon a change in which output device may be active.