Patents by Inventor Michael G. Abernathy
Michael G. Abernathy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10527896Abstract: Various circuits may benefit from suitable protection. For example, certain displays, such as active matrix liquid crystal displays, may benefit from enclosures configured to protect driver circuits from high intensity radiated fields. A system can include a first protective conductive coating layer. The system can also include a first insulating layer on the first protective conductive layer. The system can further include a signal conductive layer on the insulating layer. The system can additionally include a driver layer mounted to the signal conductive layer. The system can also include a second insulating layer above the driver layer. The system can further include a second protective conductive coating layer on the second insulating layer. The system can additionally include one or a plurality of conductive elements disposed between the first protective conductive coating layer and the second protective conductive coating layer to form an enclosure around the driver layer.Type: GrantFiled: December 8, 2017Date of Patent: January 7, 2020Assignee: L3 TECHNOLOGIES, INC.Inventors: Michael G. Abernathy, Mark W. Fletcher, Sanjay Tripathi
-
Publication number: 20190179187Abstract: Various circuits may benefit from suitable protection. For example, certain displays, such as active matrix liquid crystal displays, may benefit from enclosures configured to protect driver circuits from high intensity radiated fields. A system can include a first protective conductive coating layer. The system can also include a first insulating layer on the first protective conductive layer. The system can further include a signal conductive layer on the insulating layer. The system can additionally include a driver layer mounted to the signal conductive layer. The system can also include a second insulating layer above the driver layer. The system can further include a second protective conductive coating layer on the second insulating layer. The system can additionally include one or a plurality of conductive elements disposed between the first protective conductive coating layer and the second protective conductive coating layer to form an enclosure around the driver layer.Type: ApplicationFiled: December 8, 2017Publication date: June 13, 2019Applicant: L3 Technologies, Inc.Inventors: Michael G. Abernathy, Mark W. Fletcher, Sanjay Tripathi
-
Patent number: 10037723Abstract: A fault-tolerant LCD display system comprises an LCD panel and a first driver coupled to the LCD panel and including a first gate driver and a first source driver, the first driver including a first transient voltage suppressor. A second driver is also coupled to the LCD panel and includes a second gate driver and a second source driver, the second driver including a second transient voltage suppressor. One of the first and second drivers is operable to be active while the other is inactive, and vice versa, and the first and second drivers are isolated from one another. The first and second transient voltage suppressors are operable to prevent a back biasing voltage from leaking back through the inactive driver and thus the transient voltage suppressors are operative to prevent a back biasing voltage from shunting through the non-active driver.Type: GrantFiled: September 15, 2016Date of Patent: July 31, 2018Assignee: L3 COMMUNICATIONS CORP.Inventor: Michael G. Abernathy
-
Patent number: 10033557Abstract: Digital video signals are transmitted from a transmitter to a receiver via a digital video interface including shielded twisted pair cables that are surrounded by an over-braid shield. The over-braid shield is connected to a chassis ground at a transmitting end and the receiving end. An interface conveys the received signals to receiver processing circuitry. The interface is connected to an isolated ground, isolating the receiver processing circuitry. The twisted pairs are also connected to the isolated ground, such that a return current is forced back through the twisted pair cable shields rather than the over-braid shield. This reduces electromagnetic emissions and confines transients primarily to the over-braid shield.Type: GrantFiled: April 6, 2016Date of Patent: July 24, 2018Assignee: L-3 COMMUNICATIONS CORPORATIONInventors: Michael G. Abernathy, Nathaniel Flournoy Lovelace, III
-
Publication number: 20180075790Abstract: A fault-tolerant LCD display system comprises an LCD panel and a first driver coupled to the LCD panel and including a first gate driver and a first source driver, the first driver including a first transient voltage suppressor. A second driver is also coupled to the LCD panel and includes a second gate driver and a second source driver, the second driver including a second transient voltage suppressor. One of the first and second drivers is operable to be active while the other is inactive, and vice versa, and the first and second drivers are isolated from one another. The first and second transient voltage suppressors are operable to prevent a back biasing voltage from leaking back through the inactive driver and thus the transient voltage suppressors are operative to prevent a back biasing voltage from shunting through the non-active driver.Type: ApplicationFiled: September 15, 2016Publication date: March 15, 2018Applicant: L-3 COMMUNICATIONS CORPORATIONInventor: Michael G. ABERNATHY
-
Publication number: 20170295043Abstract: Digital video signals are transmitted from a transmitter to a receiver via a digital video interface including shielded twisted pair cables that are surrounded by an over-braid shield. The over-braid shield is connected to a chassis ground at a transmitting end and the receiving end. An interface conveys the received signals to receiver processing circuitry. The interface is connected to an isolated ground, isolating the receiver processing circuitry. The twisted pairs are also connected to the isolated ground, such that a return current is forced back through the twisted pair cable shields rather than the over-braid shield. This reduces electromagnetic emissions and confines transients primarily to the over-braid shield.Type: ApplicationFiled: April 6, 2016Publication date: October 12, 2017Applicant: L-3 COMMUNICATIONS CORPORATIONInventors: Michael G. ABERNATHY, Nathaniel Flournoy LOVELACE, III
-
Patent number: 5175515Abstract: An electrical system wherein the electrical conductive traces on the circuit boards are routed to achieve a balanced net to reduce noise caused by transmission line reflections. A trace is routed from the source terminal of the net to a balanced junction wherein if there are an odd number of load terminals, or loads, the balanced junction is located at one of the loads. The remaining loads are grouped into branches wherein each branch includes an equal number of loads. A trace is routed between each of the loads of each branch to serially connect the loads of each branch together, or, a trace is routed from a center one of the branch loads to each of the remaining branch loads, forming subbranches. In an alternate embodiment, a balanced subbranch is developed. The balanced load is connected to a pseudo-balanced load, which further receives an equal number of branches. The pseudo-balanced load is then connected to another pseudo-balanced load, which may also receive an equal number of branches.Type: GrantFiled: June 21, 1991Date of Patent: December 29, 1992Assignee: Compaq Computer CorporationInventors: Michael G. Abernathy, Angie M. Fletcher, Paul Santeler, Roy E. Thomas, III
-
Patent number: 5166624Abstract: Method for determining the susceptibility of a protective device protected electronic assembly to electrostatic discharge events. The protective component is subjected to an electrostatic discharge event and the amount of kinetic energy transferred to the protective component during the electrostatic discharge event is determined. The susceptibility of the assembly to electrostatic discharge events is then determined based upon the amount of kinetic energy transferred to the protective component during the electrostatic discharge event.Type: GrantFiled: May 23, 1991Date of Patent: November 24, 1992Assignee: Compaq Computer CorporationInventor: Michael G. Abernathy