公开(公告)号：US20180075790A1

公开(公告)日：2018-03-15

申请号：US15266556

申请日：2016-09-15

Applicant: L-3 COMMUNICATIONS CORPORATION

Inventor： Michael G. ABERNATHY

IPC: G09G3/00 ,  G09G3/36 ,  G02F1/1368 ,  G02F1/1362

CPC classification number: G09G3/006 ,  G02F1/136204 ,  G02F1/1368 ,  G02F2201/506 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2310/0281 ,  G09G2330/08

Abstract: 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.

公开(公告)号：US20170295043A1

公开(公告)日：2017-10-12

申请号：US15091960

申请日：2016-04-06

Applicant: L-3 COMMUNICATIONS CORPORATION

Inventor： Michael G. ABERNATHY ,  Nathaniel Flournoy LOVELACE, III

IPC: H04L25/03 ,  H04N21/41 ,  H04N21/4363

CPC classification number: H04L25/03885 ,  G09G5/006 ,  G09G2330/02 ,  G09G2330/06 ,  G09G2370/12 ,  G09G2380/12 ,  H04L25/0266 ,  H04N21/40 ,  H04N21/41 ,  H04N21/4104 ,  H04N21/43 ,  H04N21/436 ,  H04N21/43615 ,  H04N21/43632 ,  H04N21/43635

Abstract: 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.