Hao V Nguyen

7636549, Dec 22, 2009

Apr 21, 2006

11/408763

Dung T. Ma - Westminster CA, US
Hao V. Nguyen - Grand Prairie TX, US

Abbott Medical Optics Inc. - Santa Ana CA

H04B 7/00
H04M 1/66
H04M 1/68
H04M 3/16

455 412, 455 413, 455411

A method and apparatus for managing the establishment of a wireless connection between an instrument host and a non-fixed device is provided. The method comprises acquiring the non-fixed medical device address over a fixed wire by replacing the traditional wireless searching mechanism. The method also comprises providing an authentication mechanism between the instrument host and the non-fixed device, for example, across a wireless communications network.

7730362, Jun 1, 2010

Nov 9, 2006

11/558427

Michael J. Claus - Newport Coast CA, US
Hao V. Nguyen - Grand Prairie TX, US

Abbott Medical Optics Inc. - Santa Ana CA

G06F 11/00

714 47, 719313, 714708

A method and system of establishing communications between at least two independent software modules is provided. The design comprises providing a media connection between software modules, wherein the software modules employ a communications protocol and participate in a bi-directional master-slave relationship between a master module and a slave module. The design further comprises sending arbitrary data between the master and slave modules, wherein the arbitrary data is used by the master module to control and obtain status from the slave module, and sending arbitrary data further enables the slave module to return data and status information to the master module. The design also employs a communications watchdog between the master and slave modules, wherein the communications watchdog monitors communications quality between the master and slave modules and impairs functionality in the master and slave modules when communications quality degrades. The bandwidth efficient communications protocol comprises bytes transmitted using a packet consisting of a start indication, a message identifier, an optional service identifier, a class identifier, an optional length of data pertinent to the medical device, a checksum, and a checksum complement.

8312098, Nov 13, 2012

Nov 9, 2006

11/558429

Michael J. Claus - Newport Coast CA, US
Hao V. Nguyen - Grand Prairie TX, US

Abbott Medical Optics Inc. - Santa Ana CA

G06F 15/16
G06F 11/00
G06F 15/173

709208, 709224, 709230, 709237, 714 471, 714706, 714712, 719313

A method and system of establishing communications between at least two independent software modules in a safety critical system, such as a medical system, is provided. The design comprises providing a media connection between software modules, wherein the software modules employ a communications protocol and participate in a bi-directional master-slave relationship between a master module and a slave module. The design further comprises sending an arbitrary length of data between the master and slave modules, wherein the arbitrary length of data is used by the master module to control and obtain status from the slave module, and sending arbitrary data further enables the slave module to return data and status information to the master module. The design also employs a safety critical communications watchdog between the master and slave modules, wherein the safety critical communications watchdog monitors communications quality between the master and slave modules. The protocol comprises bytes transmitted using a packet consisting of a start indication, a message identifier, an optional service identifier, a class identifier, an arbitrary length of data pertinent to the medical device comprising optional data, a checksum, and a checksum complement.