Christopher Nguyen

US Patent:

6989970, Jan 24, 2006

Filed:

Feb 13, 2003

Appl. No.:

10/365932

Inventors:

Christopher Nguyen - Union City CA, US
Joseph T. Castagna - San Jose CA, US
Richard G. Ramsdell - Saratoga CA, US

Assignee:

Matsushita Electric Industrial Co., Ltd. - Kadoma

International Classification:

G11B 21/08

US Classification:

3602657

Abstract:

Assemblies in accordance with the present invention can access a data storage medium having one or more disks. One such assembly comprises a mounting block including a bore and at least one arm connected with the mounting block. A flexible member is connected with the at least one arm and a head is associated with the flexible member. The head is positioned over the surface of the disk. The arm is designed such that it can be disconnected from the mount without disassembling the bore. By having a removably fastened arm, the assembly can be built at a relatively low cost and without misalignment and deformation. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

US Patent:

7031117, Apr 18, 2006

Filed:

Feb 13, 2003

Appl. No.:

10/366074

Inventors:

Christopher Nguyen - Union City CA, US
Richard G. Ramsdell - Saratoga CA, US

Assignee:

Matsushita Electrical Industrial Co., Ltd. - Osaka

International Classification:

G11B 5/55

US Classification:

3602659, 3602661

Abstract:

Assemblies in accordance with the present invention can access a data storage medium having one or more disks. One such assembly comprises a mounting block including a bore and spacer, an arm stack connected with the top surface of the spacer, and a bottom arm connected with the bottom surface of the spacer. The arm stack comprises module(s) stacked on a top arm. The arm stack and bottom arm are designed such that either can be disconnected from the mounting block without disassembling the bore. By having a removably fastened arm stack and bottom arm, the assembly can be built at a relatively low cost without deformation. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

US Patent:

20040123440, Jul 1, 2004

Filed:

Feb 13, 2003

Appl. No.:

10/366235

Inventors:

Christopher Nguyen - Union City CA, US
Joseph Castagna - San Jose CA, US
Richard Ramsdell - Saratoga CA, US

International Classification:

B23P006/00
H04R031/00

US Classification:

029/402040, 029/426100, 029/402080, 029/603020, 029/603030

Abstract:

Methods in accordance with the present invention can be used to assemble or rework a rotary actuator assembly for a media data storage device having one or more disks. One such method for assembling a rotary actuator assembly includes connecting at least one arm to a mounting block wherein the mounting block includes a bore and a spacer, the spacer having threaded holes on a top surface and a bottom surface in order to receive screws. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

US Patent:

20040123448, Jul 1, 2004

Filed:

Feb 13, 2003

Appl. No.:

10/365934

Inventors:

Christopher Nguyen - Union City CA, US
Richard Ramsdell - Saratoga CA, US

International Classification:

G11B005/127
H04R031/00

US Classification:

029/603030, 029/603040

Abstract:

Methods in accordance with the present invention can be used to assemble or rework a modular rotary actuator assembly for a media data storage device having one or more disks. One such method for assembling a modular rotary actuator assembly includes assembling a module, assembling an arm stack by connecting a first arm with the module, connecting the arm stack to the top surface of a spacer of a mounting block by one or more screws, connecting a second arm with the bottom surface of the spacer by one or more screws, and inserting a bearing arrangement into a bore of the mounting block. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

US Patent:

20200379454, Dec 3, 2020

Filed:

May 29, 2020

Appl. No.:

16/887957

Inventors:

- Osaka, JP
Christopher T. Nguyen - Los Altos CA, US
The Vinh Luong - Belmont CA, US
Taejin Chun - Mountain View CA, US

International Classification:

G05B 23/02
G06N 20/00
G06N 3/04
G06F 17/18

Abstract:

A predictive maintenance server receives data from sensors of equipment. The server uses one or more machine learning models to assign an anomaly score. Responsive to the anomaly score exceeding a threshold value, the server may issue an alert. The machine learning model may be supervised or unsupervised. In one embodiment, the machine learning model use several sensor channels to predict the values of one or more vitals of the equipment and compare the predicted values to the actual measured values of the vitals. The server may assign an anomaly score based on the differences between the predicted values and the measured values. In one embodiment, the machine learning model may be an autoencoder that generates a distribution of the measurement values to determine the likelihood of observing the actual measured values in a normal operation. In one embodiment, the server may use a histogram approach to predict anomaly.

US Patent:

20190228002, Jul 25, 2019

Filed:

Feb 6, 2019

Appl. No.:

16/268503

Inventors:

Christopher T. Nguyen - Los Altos CA, US
Anh H. Trinh - Milpitas CA, US
Bach D. Bui - Milpitas CA, US

International Classification:

G06F 16/23
H04L 29/08
G06Q 10/10
G06F 8/30
G06F 16/30
H04L 12/18
G06F 16/955
G06F 16/28
G06N 20/00
G06F 16/27
G06F 16/22

Abstract:

A data analysis system stores in-memory representation of a distributed data structure across a plurality of processors of a parallel or distributed system. Client applications interact with the in-memory distributed data structure to process queries using the in-memory distributed data structure and to modify the in-memory distributed data structure. The data analysis system creates uniform resource identifier (URI) to identify each in-memory distributed data structure. The URI can be communicated from one client application to another application using communication mechanisms outside the data analysis system, for example, by email, thereby allowing other client devices to interact with a particular in-memory distributed data structure. The in-memory distributed data structure can be a machine learning model that is trained by one client device and executed by another client device. A client application can interact with the in-memory distributed data structure using different programming languages.

US Patent:

20150058429, Feb 26, 2015

Filed:

Aug 22, 2014

Appl. No.:

14/466318

Inventors:

- San Francisco CA, US
Christopher Nguyen - San Francisco CA, US

International Classification:

H04L 12/58
H04L 29/06

US Classification:

709206

Abstract:

Methods and systems for tracking emails are disclosed. Examples include determining the duration of time an email is open, determining whether to initiate or continue a connection with a tracking element, and determining which particular recipient(s) opened an email sent to multiple recipients.